Test case for inner retries; add mrdb_stats.erl; update docs
This commit is contained in:
Ulf Wiger
parent
95abe4e36e
commit
3635eac717
@ -2,4 +2,5 @@
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{application,mnesia_rocksdb}.
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{modules,[mnesia_rocksdb,mnesia_rocksdb_admin,mnesia_rocksdb_app,
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mnesia_rocksdb_lib,mnesia_rocksdb_params,mnesia_rocksdb_sup,
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mnesia_rocksdb_tuning,mrdb,mrdb_index,mrdb_mutex,mrdb_select]}.
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mnesia_rocksdb_tuning,mrdb,mrdb_index,mrdb_mutex,
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mrdb_mutex_serializer,mrdb_select,mrdb_stats]}.
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17
doc/index.html
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17
doc/index.html
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<html>
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<head>
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<title>The mnesia_rocksdb application</title>
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</head>
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<frameset cols="20%,80%">
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<frame src="modules-frame.html" name="modulesFrame" title="">
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<frame src="overview-summary.html" name="overviewFrame" title="">
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<noframes>
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<h2>This page uses frames</h2>
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<p>Your browser does not accept frames.
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<br>You should go to the <a href="overview-summary.html">non-frame version</a> instead.
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</p>
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</noframes>
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</frameset>
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</html>
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529
doc/mnesia_rocksdb.html
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529
doc/mnesia_rocksdb.html
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<html>
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
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<title>Module mnesia_rocksdb</title>
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<link rel="stylesheet" type="text/css" href="stylesheet.css" title="EDoc">
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</head>
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<body bgcolor="white">
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<div class="navbar"><a name="#navbar_top"></a><table width="100%" border="0" cellspacing="0" cellpadding="2" summary="navigation bar"><tr><td><a href="overview-summary.html" target="overviewFrame">Overview</a></td><td><a href="http://www.erlang.org/"><img src="erlang.png" align="right" border="0" alt="erlang logo"></a></td></tr></table></div>
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<hr>
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<h1>Module mnesia_rocksdb</h1>
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<ul class="index"><li><a href="#description">Description</a></li><li><a href="#types">Data Types</a></li><li><a href="#index">Function Index</a></li><li><a href="#functions">Function Details</a></li></ul>rocksdb storage backend for Mnesia.
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<p><b>Behaviours:</b> <a href="gen_server.html"><tt>gen_server</tt></a>, <a href="mnesia_backend_type.html"><tt>mnesia_backend_type</tt></a>.</p>
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<h2><a name="description">Description</a></h2><p>rocksdb storage backend for Mnesia.</p>
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This module implements a mnesia backend callback plugin.
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It's specifically documented to try to explain the workings of
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backend plugins.
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<h2><a name="types">Data Types</a></h2>
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<h3 class="typedecl"><a name="type-alias">alias()</a></h3>
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<p><tt>alias() = atom()</tt></p>
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<h3 class="typedecl"><a name="type-data_tab">data_tab()</a></h3>
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<p><tt>data_tab() = atom()</tt></p>
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<h3 class="typedecl"><a name="type-error">error()</a></h3>
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<p><tt>error() = {error, any()}</tt></p>
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<h3 class="typedecl"><a name="type-index_info">index_info()</a></h3>
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<p><tt>index_info() = {<a href="#type-index_pos">index_pos()</a>, <a href="#type-index_type">index_type()</a>}</tt></p>
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<h3 class="typedecl"><a name="type-index_pos">index_pos()</a></h3>
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<p><tt>index_pos() = integer() | {atom()}</tt></p>
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<h3 class="typedecl"><a name="type-index_tab">index_tab()</a></h3>
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<p><tt>index_tab() = {<a href="#type-data_tab">data_tab()</a>, index, <a href="#type-index_info">index_info()</a>}</tt></p>
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<h3 class="typedecl"><a name="type-index_type">index_type()</a></h3>
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<p><tt>index_type() = ordered</tt></p>
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<h3 class="typedecl"><a name="type-retainer_name">retainer_name()</a></h3>
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<p><tt>retainer_name() = any()</tt></p>
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<h3 class="typedecl"><a name="type-retainer_tab">retainer_tab()</a></h3>
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<p><tt>retainer_tab() = {<a href="#type-data_tab">data_tab()</a>, retainer, <a href="#type-retainer_name">retainer_name()</a>}</tt></p>
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<h3 class="typedecl"><a name="type-table">table()</a></h3>
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<p><tt>table() = <a href="#type-data_tab">data_tab()</a> | <a href="#type-index_tab">index_tab()</a> | <a href="#type-retainer_tab">retainer_tab()</a></tt></p>
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<h3 class="typedecl"><a name="type-table_type">table_type()</a></h3>
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<p><tt>table_type() = set | ordered_set | bag</tt></p>
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<h2><a name="index">Function Index</a></h2>
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<table width="100%" border="1" cellspacing="0" cellpadding="2" summary="function index"><tr><td valign="top"><a href="#add_aliases-1">add_aliases/1</a></td><td></td></tr>
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<tr><td valign="top"><a href="#check_definition-4">check_definition/4</a></td><td></td></tr>
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<tr><td valign="top"><a href="#close_table-2">close_table/2</a></td><td></td></tr>
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<tr><td valign="top"><a href="#code_change-3">code_change/3</a></td><td></td></tr>
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<tr><td valign="top"><a href="#create_schema-1">create_schema/1</a></td><td></td></tr>
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<tr><td valign="top"><a href="#create_schema-2">create_schema/2</a></td><td></td></tr>
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<tr><td valign="top"><a href="#create_table-3">create_table/3</a></td><td></td></tr>
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<tr><td valign="top"><a href="#decode_key-1">decode_key/1</a></td><td></td></tr>
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<tr><td valign="top"><a href="#decode_key-2">decode_key/2</a></td><td></td></tr>
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<tr><td valign="top"><a href="#decode_val-1">decode_val/1</a></td><td></td></tr>
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<tr><td valign="top"><a href="#decode_val-3">decode_val/3</a></td><td></td></tr>
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<tr><td valign="top"><a href="#default_alias-0">default_alias/0</a></td><td></td></tr>
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<tr><td valign="top"><a href="#delete-3">delete/3</a></td><td></td></tr>
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<tr><td valign="top"><a href="#delete_table-2">delete_table/2</a></td><td></td></tr>
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<tr><td valign="top"><a href="#encode_key-1">encode_key/1</a></td><td></td></tr>
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<tr><td valign="top"><a href="#encode_key-2">encode_key/2</a></td><td></td></tr>
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<tr><td valign="top"><a href="#encode_val-1">encode_val/1</a></td><td></td></tr>
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<tr><td valign="top"><a href="#encode_val-2">encode_val/2</a></td><td></td></tr>
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<tr><td valign="top"><a href="#first-2">first/2</a></td><td></td></tr>
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<tr><td valign="top"><a href="#fixtable-3">fixtable/3</a></td><td></td></tr>
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<tr><td valign="top"><a href="#handle_call-3">handle_call/3</a></td><td></td></tr>
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<tr><td valign="top"><a href="#handle_cast-2">handle_cast/2</a></td><td></td></tr>
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<tr><td valign="top"><a href="#handle_info-2">handle_info/2</a></td><td></td></tr>
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<tr><td valign="top"><a href="#index_is_consistent-3">index_is_consistent/3</a></td><td></td></tr>
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<tr><td valign="top"><a href="#info-3">info/3</a></td><td></td></tr>
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<tr><td valign="top"><a href="#init-1">init/1</a></td><td></td></tr>
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<tr><td valign="top"><a href="#init_backend-0">init_backend/0</a></td><td>Called by mnesia_schema in order to intialize the backend.</td></tr>
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<tr><td valign="top"><a href="#insert-3">insert/3</a></td><td></td></tr>
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<tr><td valign="top"><a href="#is_index_consistent-2">is_index_consistent/2</a></td><td></td></tr>
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<tr><td valign="top"><a href="#ix_listvals-3">ix_listvals/3</a></td><td></td></tr>
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<tr><td valign="top"><a href="#ix_prefixes-3">ix_prefixes/3</a></td><td></td></tr>
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<tr><td valign="top"><a href="#last-2">last/2</a></td><td></td></tr>
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<tr><td valign="top"><a href="#load_table-4">load_table/4</a></td><td></td></tr>
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<tr><td valign="top"><a href="#lookup-3">lookup/3</a></td><td></td></tr>
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<tr><td valign="top"><a href="#match_delete-3">match_delete/3</a></td><td></td></tr>
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<tr><td valign="top"><a href="#next-3">next/3</a></td><td></td></tr>
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<tr><td valign="top"><a href="#prev-3">prev/3</a></td><td></td></tr>
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<tr><td valign="top"><a href="#real_suffixes-0">real_suffixes/0</a></td><td></td></tr>
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<tr><td valign="top"><a href="#receive_data-5">receive_data/5</a></td><td></td></tr>
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<tr><td valign="top"><a href="#receive_done-4">receive_done/4</a></td><td></td></tr>
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<tr><td valign="top"><a href="#receiver_first_message-4">receiver_first_message/4</a></td><td></td></tr>
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<tr><td valign="top"><a href="#register-0">register/0</a></td><td>Equivalent to <a href="#register-1"><tt>register(rocksdb_copies)</tt></a>.
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</td></tr>
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<tr><td valign="top"><a href="#register-1">register/1</a></td><td>Convenience function for registering a mnesia_rocksdb backend plugin.</td></tr>
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<tr><td valign="top"><a href="#remove_aliases-1">remove_aliases/1</a></td><td></td></tr>
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<tr><td valign="top"><a href="#repair_continuation-2">repair_continuation/2</a></td><td></td></tr>
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<tr><td valign="top"><a href="#select-1">select/1</a></td><td></td></tr>
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<tr><td valign="top"><a href="#select-3">select/3</a></td><td></td></tr>
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<tr><td valign="top"><a href="#select-4">select/4</a></td><td></td></tr>
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<tr><td valign="top"><a href="#semantics-2">semantics/2</a></td><td></td></tr>
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<tr><td valign="top"><a href="#sender_handle_info-5">sender_handle_info/5</a></td><td></td></tr>
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<tr><td valign="top"><a href="#sender_init-4">sender_init/4</a></td><td></td></tr>
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<tr><td valign="top"><a href="#show_table-1">show_table/1</a></td><td>A debug function that shows the rocksdb table content.</td></tr>
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<tr><td valign="top"><a href="#show_table-2">show_table/2</a></td><td></td></tr>
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<tr><td valign="top"><a href="#slot-3">slot/3</a></td><td></td></tr>
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<tr><td valign="top"><a href="#start_proc-6">start_proc/6</a></td><td></td></tr>
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<tr><td valign="top"><a href="#sync_close_table-2">sync_close_table/2</a></td><td></td></tr>
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<tr><td valign="top"><a href="#terminate-2">terminate/2</a></td><td></td></tr>
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<tr><td valign="top"><a href="#tmp_suffixes-0">tmp_suffixes/0</a></td><td></td></tr>
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<tr><td valign="top"><a href="#update_counter-4">update_counter/4</a></td><td></td></tr>
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<tr><td valign="top"><a href="#validate_key-6">validate_key/6</a></td><td></td></tr>
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<tr><td valign="top"><a href="#validate_record-6">validate_record/6</a></td><td></td></tr>
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</table>
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<h2><a name="functions">Function Details</a></h2>
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<h3 class="function"><a name="add_aliases-1">add_aliases/1</a></h3>
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<div class="spec">
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<p><tt>add_aliases(Aliases) -> any()</tt></p>
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<p> </p>
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</div>
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<h3 class="function"><a name="check_definition-4">check_definition/4</a></h3>
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<div class="spec">
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<p><tt>check_definition(Alias, Tab, Nodes, Props) -> any()</tt></p>
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<p> </p>
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</div>
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<h3 class="function"><a name="close_table-2">close_table/2</a></h3>
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<div class="spec">
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<p><tt>close_table(Alias, Tab) -> any()</tt></p>
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<p> </p>
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</div>
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<h3 class="function"><a name="code_change-3">code_change/3</a></h3>
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<div class="spec">
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<p><tt>code_change(FromVsn, St, Extra) -> any()</tt></p>
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<p> </p>
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</div>
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<h3 class="function"><a name="create_schema-1">create_schema/1</a></h3>
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<div class="spec">
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<p><tt>create_schema(Nodes) -> any()</tt></p>
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<p> </p>
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</div>
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<h3 class="function"><a name="create_schema-2">create_schema/2</a></h3>
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<div class="spec">
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<p><tt>create_schema(Nodes, Aliases) -> any()</tt></p>
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<p> </p>
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</div>
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<h3 class="function"><a name="create_table-3">create_table/3</a></h3>
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<div class="spec">
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<p><tt>create_table(Alias, Tab, Props) -> any()</tt></p>
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<p> </p>
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</div>
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<h3 class="function"><a name="decode_key-1">decode_key/1</a></h3>
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<div class="spec">
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<p><tt>decode_key(Key) -> any()</tt></p>
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<p> </p>
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</div>
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<h3 class="function"><a name="decode_key-2">decode_key/2</a></h3>
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<div class="spec">
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<p><tt>decode_key(Key, Metadata) -> any()</tt></p>
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<p> </p>
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</div>
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<h3 class="function"><a name="decode_val-1">decode_val/1</a></h3>
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<div class="spec">
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<p><tt>decode_val(Val) -> any()</tt></p>
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<p> </p>
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</div>
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<h3 class="function"><a name="decode_val-3">decode_val/3</a></h3>
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<div class="spec">
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<p><tt>decode_val(Val, Key, Metadata) -> any()</tt></p>
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<p> </p>
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</div>
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<h3 class="function"><a name="default_alias-0">default_alias/0</a></h3>
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<div class="spec">
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<p><tt>default_alias() -> any()</tt></p>
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<p> </p>
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</div>
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<h3 class="function"><a name="delete-3">delete/3</a></h3>
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<div class="spec">
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<p><tt>delete(Alias, Tab, Key) -> any()</tt></p>
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<p> </p>
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</div>
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<h3 class="function"><a name="delete_table-2">delete_table/2</a></h3>
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<div class="spec">
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<p><tt>delete_table(Alias, Tab) -> any()</tt></p>
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<p> </p>
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</div>
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<h3 class="function"><a name="encode_key-1">encode_key/1</a></h3>
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<div class="spec">
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<p><tt>encode_key(Key) -> any()</tt></p>
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<p> </p>
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</div>
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<h3 class="function"><a name="encode_key-2">encode_key/2</a></h3>
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<div class="spec">
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<p><tt>encode_key(Key, Metadata) -> any()</tt></p>
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<p> </p>
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</div>
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<h3 class="function"><a name="encode_val-1">encode_val/1</a></h3>
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<div class="spec">
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<p><tt>encode_val(Val) -> any()</tt></p>
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<p> </p>
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</div>
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<h3 class="function"><a name="encode_val-2">encode_val/2</a></h3>
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<div class="spec">
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<p><tt>encode_val(Val, Metadata) -> any()</tt></p>
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<p> </p>
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</div>
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<h3 class="function"><a name="first-2">first/2</a></h3>
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<div class="spec">
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<p><tt>first(Alias, Tab) -> any()</tt></p>
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<p> </p>
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</div>
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<h3 class="function"><a name="fixtable-3">fixtable/3</a></h3>
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<div class="spec">
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<p><tt>fixtable(Alias, Tab, Bool) -> any()</tt></p>
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<p> </p>
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</div>
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<h3 class="function"><a name="handle_call-3">handle_call/3</a></h3>
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<div class="spec">
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<p><tt>handle_call(M, From, St) -> any()</tt></p>
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<p> </p>
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</div>
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<h3 class="function"><a name="handle_cast-2">handle_cast/2</a></h3>
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<div class="spec">
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<p><tt>handle_cast(X1, St) -> any()</tt></p>
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<p> </p>
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</div>
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<h3 class="function"><a name="handle_info-2">handle_info/2</a></h3>
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<div class="spec">
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<p><tt>handle_info(EXIT, St) -> any()</tt></p>
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<p> </p>
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</div>
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<h3 class="function"><a name="index_is_consistent-3">index_is_consistent/3</a></h3>
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<div class="spec">
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<p><tt>index_is_consistent(Alias, X2, Bool) -> any()</tt></p>
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<p> </p>
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</div>
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<h3 class="function"><a name="info-3">info/3</a></h3>
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<div class="spec">
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<p><tt>info(Alias, Tab, Item) -> any()</tt></p>
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<p> </p>
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</div>
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<h3 class="function"><a name="init-1">init/1</a></h3>
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<div class="spec">
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<p><tt>init(X1) -> any()</tt></p>
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<p> </p>
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</div>
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<h3 class="function"><a name="init_backend-0">init_backend/0</a></h3>
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<div class="spec">
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<p><tt>init_backend() -> any()</tt></p>
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<p> </p>
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</div><p><p>Called by mnesia_schema in order to intialize the backend</p>
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<p>This is called when the backend is registered with the first alias, or ...</p>
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<p>See OTP issue #425 (16 Feb 2021). This callback is supposed to be called
|
||||
before first use of the backend, but unfortunately, it is only called at
|
||||
mnesia startup and when a backend module is registered MORE THAN ONCE.
|
||||
This means we need to handle this function being called multiple times.</p>
|
||||
|
||||
<p>The bug has been fixed as of OTP 24.0-rc3</p>
|
||||
|
||||
<p>If processes need to be started, this can be done using
|
||||
<code>mnesia_ext_sup:start_proc(Name, Mod, F, Args [, Opts])</code>
|
||||
where Opts are parameters for the supervised child:</p>
|
||||
|
||||
* <code>restart</code> (default: <code>transient</code>)
|
||||
* <code>shutdown</code> (default: <code>120000</code>)
|
||||
* <code>type</code> (default: <code>worker</code>)
|
||||
* <code>modules</code> (default: <code>[Mod]</code>)</p>
|
||||
|
||||
<h3 class="function"><a name="insert-3">insert/3</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>insert(Alias, Tab, Obj) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="is_index_consistent-2">is_index_consistent/2</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>is_index_consistent(Alias, X2) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="ix_listvals-3">ix_listvals/3</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>ix_listvals(Tab, Pos, Obj) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="ix_prefixes-3">ix_prefixes/3</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>ix_prefixes(Tab, Pos, Obj) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="last-2">last/2</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>last(Alias, Tab) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="load_table-4">load_table/4</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>load_table(Alias, Tab, LoadReason, Props) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="lookup-3">lookup/3</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>lookup(Alias, Tab, Key) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="match_delete-3">match_delete/3</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>match_delete(Alias, Tab, Pat) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="next-3">next/3</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>next(Alias, Tab, Key) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="prev-3">prev/3</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>prev(Alias, Tab, Key) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="real_suffixes-0">real_suffixes/0</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>real_suffixes() -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="receive_data-5">receive_data/5</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>receive_data(Data, Alias, Tab, Sender, State) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="receive_done-4">receive_done/4</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>receive_done(Alias, Tab, Sender, State) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="receiver_first_message-4">receiver_first_message/4</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>receiver_first_message(Pid, Msg, Alias, Tab) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="register-0">register/0</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>register() -> {ok, <a href="#type-alias">alias()</a>} | {error, term()}</tt><br></p>
|
||||
<p> </p>
|
||||
</div><p>Equivalent to <a href="#register-1"><tt>register(rocksdb_copies)</tt></a>.</p>
|
||||
|
||||
|
||||
<h3 class="function"><a name="register-1">register/1</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>register(Alias::<a href="#type-alias">alias()</a>) -> {ok, <a href="#type-alias">alias()</a>} | <a href="#type-error">error()</a></tt><br></p>
|
||||
<p> </p>
|
||||
</div><p><p>Convenience function for registering a mnesia_rocksdb backend plugin</p>
|
||||
|
||||
The function used to register a plugin is <code>mnesia_schema:add_backend_type(Alias, Module)</code>
|
||||
where <code>Module</code> implements a backend_type behavior. <code>Alias</code> is an atom, and is used
|
||||
in the same way as <code>ram_copies</code> etc. The default alias is <code>rocksdb_copies</code>.</p>
|
||||
|
||||
<h3 class="function"><a name="remove_aliases-1">remove_aliases/1</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>remove_aliases(Aliases) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="repair_continuation-2">repair_continuation/2</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>repair_continuation(Cont, Ms) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="select-1">select/1</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>select(Cont) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="select-3">select/3</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>select(Alias, Tab, Ms) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="select-4">select/4</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>select(Alias, IxTab, Ms, Limit) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="semantics-2">semantics/2</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>semantics(Alias, X2) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="sender_handle_info-5">sender_handle_info/5</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>sender_handle_info(Msg, Alias, Tab, ReceiverPid, Cont) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="sender_init-4">sender_init/4</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>sender_init(Alias, Tab, RemoteStorage, Pid) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="show_table-1">show_table/1</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>show_table(Tab) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div><p>A debug function that shows the rocksdb table content</p>
|
||||
|
||||
<h3 class="function"><a name="show_table-2">show_table/2</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>show_table(Tab, Limit) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="slot-3">slot/3</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>slot(Alias, Tab, Pos) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="start_proc-6">start_proc/6</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>start_proc(Alias, Tab, Type, ProcName, Props, RdbOpts) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="sync_close_table-2">sync_close_table/2</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>sync_close_table(Alias, Tab) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="terminate-2">terminate/2</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>terminate(Reason, St) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="tmp_suffixes-0">tmp_suffixes/0</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>tmp_suffixes() -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="update_counter-4">update_counter/4</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>update_counter(Alias, Tab, C, Val) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="validate_key-6">validate_key/6</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>validate_key(Alias, Tab, RecName, Arity, Type, Key) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="validate_record-6">validate_record/6</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>validate_record(Alias, Tab, RecName, Arity, Type, Obj) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
<hr>
|
||||
|
||||
<div class="navbar"><a name="#navbar_bottom"></a><table width="100%" border="0" cellspacing="0" cellpadding="2" summary="navigation bar"><tr><td><a href="overview-summary.html" target="overviewFrame">Overview</a></td><td><a href="http://www.erlang.org/"><img src="erlang.png" align="right" border="0" alt="erlang logo"></a></td></tr></table></div>
|
||||
<p><i>Generated by EDoc</i></p>
|
||||
</body>
|
||||
</html>
|
||||
294
doc/mnesia_rocksdb_admin.html
Normal file
294
doc/mnesia_rocksdb_admin.html
Normal file
@ -0,0 +1,294 @@
|
||||
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
|
||||
<html>
|
||||
<head>
|
||||
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
|
||||
<title>Module mnesia_rocksdb_admin</title>
|
||||
<link rel="stylesheet" type="text/css" href="stylesheet.css" title="EDoc">
|
||||
</head>
|
||||
<body bgcolor="white">
|
||||
<div class="navbar"><a name="#navbar_top"></a><table width="100%" border="0" cellspacing="0" cellpadding="2" summary="navigation bar"><tr><td><a href="overview-summary.html" target="overviewFrame">Overview</a></td><td><a href="http://www.erlang.org/"><img src="erlang.png" align="right" border="0" alt="erlang logo"></a></td></tr></table></div>
|
||||
<hr>
|
||||
|
||||
<h1>Module mnesia_rocksdb_admin</h1>
|
||||
<ul class="index"><li><a href="#types">Data Types</a></li><li><a href="#index">Function Index</a></li><li><a href="#functions">Function Details</a></li></ul>
|
||||
|
||||
<p><b>Behaviours:</b> <a href="gen_server.html"><tt>gen_server</tt></a>.</p>
|
||||
|
||||
<h2><a name="types">Data Types</a></h2>
|
||||
|
||||
<h3 class="typedecl"><a name="type-alias">alias()</a></h3>
|
||||
<p><tt>alias() = atom()</tt></p>
|
||||
|
||||
|
||||
<h3 class="typedecl"><a name="type-backend">backend()</a></h3>
|
||||
<p><tt>backend() = #{db_ref := <a href="#type-db_ref">db_ref()</a>, cf_info := #{<a href="#type-table">table()</a> := <a href="#type-cf">cf()</a>}}</tt></p>
|
||||
|
||||
|
||||
<h3 class="typedecl"><a name="type-cf">cf()</a></h3>
|
||||
<p><tt>cf() = <a href="/home/uwiger/ae/mnesia_rocksdb/doc/mrdb.html#type-db_ref">mrdb:db_ref()</a></tt></p>
|
||||
|
||||
|
||||
<h3 class="typedecl"><a name="type-db_ref">db_ref()</a></h3>
|
||||
<p><tt>db_ref() = <a href="/home/uwiger/ae/mnesia_rocksdb/_build/default/lib/rocksdb/doc/rocksdb.html#type-db_handle">rocksdb:db_handle()</a></tt></p>
|
||||
|
||||
|
||||
<h3 class="typedecl"><a name="type-gen_server_noreply">gen_server_noreply()</a></h3>
|
||||
<p><tt>gen_server_noreply() = {noreply, <a href="#type-st">st()</a>} | {stop, <a href="#type-reason">reason()</a>, <a href="#type-st">st()</a>}</tt></p>
|
||||
|
||||
|
||||
<h3 class="typedecl"><a name="type-gen_server_reply">gen_server_reply()</a></h3>
|
||||
<p><tt>gen_server_reply() = {reply, <a href="#type-reply">reply()</a>, <a href="#type-st">st()</a>} | {stop, <a href="#type-reason">reason()</a>, <a href="#type-reply">reply()</a>, <a href="#type-st">st()</a>}</tt></p>
|
||||
|
||||
|
||||
<h3 class="typedecl"><a name="type-properties">properties()</a></h3>
|
||||
<p><tt>properties() = [{atom(), any()}]</tt></p>
|
||||
|
||||
|
||||
<h3 class="typedecl"><a name="type-reason">reason()</a></h3>
|
||||
<p><tt>reason() = any()</tt></p>
|
||||
|
||||
|
||||
<h3 class="typedecl"><a name="type-reply">reply()</a></h3>
|
||||
<p><tt>reply() = any()</tt></p>
|
||||
|
||||
|
||||
<h3 class="typedecl"><a name="type-req">req()</a></h3>
|
||||
<p><tt>req() = {create_table, <a href="#type-table">table()</a>, <a href="#type-properties">properties()</a>} | {delete_table, <a href="#type-table">table()</a>} | {load_table, <a href="#type-table">table()</a>, <a href="#type-properties">properties()</a>} | {related_resources, <a href="#type-table">table()</a>} | {get_ref, <a href="#type-table">table()</a>} | {add_aliases, [<a href="#type-alias">alias()</a>]} | {write_table_property, <a href="#type-tabname">tabname()</a>, tuple()} | {remove_aliases, [<a href="#type-alias">alias()</a>]} | {migrate, [{<a href="#type-tabname">tabname()</a>, map()}], <a href="#type-rpt">rpt()</a>} | {prep_close, <a href="#type-table">table()</a>} | {close_table, <a href="#type-table">table()</a>} | {clear_table, <a href="#type-table">table()</a> | <a href="#type-cf">cf()</a>}</tt></p>
|
||||
|
||||
|
||||
<h3 class="typedecl"><a name="type-rpt">rpt()</a></h3>
|
||||
<p><tt>rpt() = undefined | map()</tt></p>
|
||||
|
||||
|
||||
<h3 class="typedecl"><a name="type-st">st()</a></h3>
|
||||
<p><tt>st() = #st{backends = #{<a href="#type-alias">alias()</a> => <a href="#type-backend">backend()</a>}, standalone = #{{<a href="#type-alias">alias()</a>, <a href="#type-table">table()</a>} := <a href="#type-cf">cf()</a>}, default_opts = [{atom(), term()}]}</tt></p>
|
||||
|
||||
|
||||
<h3 class="typedecl"><a name="type-table">table()</a></h3>
|
||||
<p><tt>table() = <a href="#type-tabname">tabname()</a> | {admin, <a href="#type-alias">alias()</a>} | {<a href="#type-tabname">tabname()</a>, index, any()} | {<a href="#type-tabname">tabname()</a>, retainer, any()}</tt></p>
|
||||
|
||||
|
||||
<h3 class="typedecl"><a name="type-tabname">tabname()</a></h3>
|
||||
<p><tt>tabname() = atom()</tt></p>
|
||||
|
||||
|
||||
<h2><a name="index">Function Index</a></h2>
|
||||
<table width="100%" border="1" cellspacing="0" cellpadding="2" summary="function index"><tr><td valign="top"><a href="#add_aliases-1">add_aliases/1</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#clear_table-1">clear_table/1</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#close_table-2">close_table/2</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#code_change-3">code_change/3</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#create_table-3">create_table/3</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#delete_table-2">delete_table/2</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#ensure_started-0">ensure_started/0</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#get_cached_env-2">get_cached_env/2</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#get_ref-1">get_ref/1</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#get_ref-2">get_ref/2</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#handle_call-3">handle_call/3</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#handle_cast-2">handle_cast/2</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#handle_info-2">handle_info/2</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#init-1">init/1</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#load_table-3">load_table/3</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#meta-0">meta/0</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#migrate_standalone-2">migrate_standalone/2</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#migrate_standalone-3">migrate_standalone/3</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#prep_close-2">prep_close/2</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#read_info-1">read_info/1</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#read_info-2">read_info/2</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#read_info-4">read_info/4</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#related_resources-2">related_resources/2</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#remove_aliases-1">remove_aliases/1</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#request_ref-2">request_ref/2</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#set_and_cache_env-2">set_and_cache_env/2</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#start_link-0">start_link/0</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#terminate-2">terminate/2</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#write_info-4">write_info/4</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#write_table_property-3">write_table_property/3</a></td><td></td></tr>
|
||||
</table>
|
||||
|
||||
<h2><a name="functions">Function Details</a></h2>
|
||||
|
||||
<h3 class="function"><a name="add_aliases-1">add_aliases/1</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>add_aliases(Aliases) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="clear_table-1">clear_table/1</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>clear_table(Name) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="close_table-2">close_table/2</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>close_table(Alias, Name) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="code_change-3">code_change/3</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>code_change(FromVsn, St, Extra) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="create_table-3">create_table/3</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>create_table(Alias, Name, Props) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="delete_table-2">delete_table/2</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>delete_table(Alias::<a href="#type-alias">alias()</a>, Name::<a href="#type-tabname">tabname()</a>) -> ok</tt><br></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="ensure_started-0">ensure_started/0</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>ensure_started() -> ok</tt><br></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="get_cached_env-2">get_cached_env/2</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>get_cached_env(Key, Default) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="get_ref-1">get_ref/1</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>get_ref(Name) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="get_ref-2">get_ref/2</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>get_ref(Name, Default) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="handle_call-3">handle_call/3</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>handle_call(Req::{<a href="#type-alias">alias()</a>, <a href="#type-req">req()</a>}, From::any(), St::<a href="#type-st">st()</a>) -> <a href="#type-gen_server_reply">gen_server_reply()</a></tt><br></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="handle_cast-2">handle_cast/2</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>handle_cast(Msg::any(), St::<a href="#type-st">st()</a>) -> <a href="#type-gen_server_noreply">gen_server_noreply()</a></tt><br></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="handle_info-2">handle_info/2</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>handle_info(Msg::any(), St::<a href="#type-st">st()</a>) -> <a href="#type-gen_server_noreply">gen_server_noreply()</a></tt><br></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="init-1">init/1</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>init(X1) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="load_table-3">load_table/3</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>load_table(Alias, Name, Props) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="meta-0">meta/0</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>meta() -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="migrate_standalone-2">migrate_standalone/2</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>migrate_standalone(Alias, Tabs) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="migrate_standalone-3">migrate_standalone/3</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>migrate_standalone(Alias, Tabs, Rpt0) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="prep_close-2">prep_close/2</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>prep_close(Alias, Tab) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="read_info-1">read_info/1</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>read_info(TRec) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="read_info-2">read_info/2</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>read_info(Alias, Tab) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="read_info-4">read_info/4</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>read_info(Alias, Tab, K, Default) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="related_resources-2">related_resources/2</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>related_resources(Alias, Name) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="remove_aliases-1">remove_aliases/1</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>remove_aliases(Aliases) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="request_ref-2">request_ref/2</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>request_ref(Alias, Name) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="set_and_cache_env-2">set_and_cache_env/2</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>set_and_cache_env(Key, Value) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="start_link-0">start_link/0</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>start_link() -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="terminate-2">terminate/2</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>terminate(X1, St) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="write_info-4">write_info/4</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>write_info(Alias, Tab, K, V) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="write_table_property-3">write_table_property/3</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>write_table_property(Alias, Tab, Prop) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
<hr>
|
||||
|
||||
<div class="navbar"><a name="#navbar_bottom"></a><table width="100%" border="0" cellspacing="0" cellpadding="2" summary="navigation bar"><tr><td><a href="overview-summary.html" target="overviewFrame">Overview</a></td><td><a href="http://www.erlang.org/"><img src="erlang.png" align="right" border="0" alt="erlang logo"></a></td></tr></table></div>
|
||||
<p><i>Generated by EDoc</i></p>
|
||||
</body>
|
||||
</html>
|
||||
40
doc/mnesia_rocksdb_app.html
Normal file
40
doc/mnesia_rocksdb_app.html
Normal file
@ -0,0 +1,40 @@
|
||||
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
|
||||
<html>
|
||||
<head>
|
||||
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
|
||||
<title>Module mnesia_rocksdb_app</title>
|
||||
<link rel="stylesheet" type="text/css" href="stylesheet.css" title="EDoc">
|
||||
</head>
|
||||
<body bgcolor="white">
|
||||
<div class="navbar"><a name="#navbar_top"></a><table width="100%" border="0" cellspacing="0" cellpadding="2" summary="navigation bar"><tr><td><a href="overview-summary.html" target="overviewFrame">Overview</a></td><td><a href="http://www.erlang.org/"><img src="erlang.png" align="right" border="0" alt="erlang logo"></a></td></tr></table></div>
|
||||
<hr>
|
||||
|
||||
<h1>Module mnesia_rocksdb_app</h1>
|
||||
<ul class="index"><li><a href="#index">Function Index</a></li><li><a href="#functions">Function Details</a></li></ul>
|
||||
|
||||
<p><b>Behaviours:</b> <a href="application.html"><tt>application</tt></a>.</p>
|
||||
|
||||
<h2><a name="index">Function Index</a></h2>
|
||||
<table width="100%" border="1" cellspacing="0" cellpadding="2" summary="function index"><tr><td valign="top"><a href="#start-2">start/2</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#stop-1">stop/1</a></td><td></td></tr>
|
||||
</table>
|
||||
|
||||
<h2><a name="functions">Function Details</a></h2>
|
||||
|
||||
<h3 class="function"><a name="start-2">start/2</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>start(StartType, StartArgs) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="stop-1">stop/1</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>stop(State) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
<hr>
|
||||
|
||||
<div class="navbar"><a name="#navbar_bottom"></a><table width="100%" border="0" cellspacing="0" cellpadding="2" summary="navigation bar"><tr><td><a href="overview-summary.html" target="overviewFrame">Overview</a></td><td><a href="http://www.erlang.org/"><img src="erlang.png" align="right" border="0" alt="erlang logo"></a></td></tr></table></div>
|
||||
<p><i>Generated by EDoc</i></p>
|
||||
</body>
|
||||
</html>
|
||||
181
doc/mnesia_rocksdb_lib.html
Normal file
181
doc/mnesia_rocksdb_lib.html
Normal file
@ -0,0 +1,181 @@
|
||||
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
|
||||
<html>
|
||||
<head>
|
||||
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
|
||||
<title>Module mnesia_rocksdb_lib</title>
|
||||
<link rel="stylesheet" type="text/css" href="stylesheet.css" title="EDoc">
|
||||
</head>
|
||||
<body bgcolor="white">
|
||||
<div class="navbar"><a name="#navbar_top"></a><table width="100%" border="0" cellspacing="0" cellpadding="2" summary="navigation bar"><tr><td><a href="overview-summary.html" target="overviewFrame">Overview</a></td><td><a href="http://www.erlang.org/"><img src="erlang.png" align="right" border="0" alt="erlang logo"></a></td></tr></table></div>
|
||||
<hr>
|
||||
|
||||
<h1>Module mnesia_rocksdb_lib</h1>
|
||||
<ul class="index"><li><a href="#description">Description</a></li><li><a href="#index">Function Index</a></li><li><a href="#functions">Function Details</a></li></ul>RocksDB update wrappers, in separate module for easy tracing and mocking.
|
||||
|
||||
|
||||
<h2><a name="description">Description</a></h2>RocksDB update wrappers, in separate module for easy tracing and mocking.
|
||||
|
||||
<h2><a name="index">Function Index</a></h2>
|
||||
<table width="100%" border="1" cellspacing="0" cellpadding="2" summary="function index"><tr><td valign="top"><a href="#check_encoding-2">check_encoding/2</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#create_mountpoint-1">create_mountpoint/1</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#data_mountpoint-1">data_mountpoint/1</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#decode-2">decode/2</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#decode_key-1">decode_key/1</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#decode_key-2">decode_key/2</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#decode_val-1">decode_val/1</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#decode_val-3">decode_val/3</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#default_encoding-3">default_encoding/3</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#delete-3">delete/3</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#encode-2">encode/2</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#encode_key-1">encode_key/1</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#encode_key-2">encode_key/2</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#encode_val-1">encode_val/1</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#encode_val-2">encode_val/2</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#keypos-1">keypos/1</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#open_rocksdb-3">open_rocksdb/3</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#put-4">put/4</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#tabname-1">tabname/1</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#valid_key_type-2">valid_key_type/2</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#valid_obj_type-2">valid_obj_type/2</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#write-3">write/3</a></td><td></td></tr>
|
||||
</table>
|
||||
|
||||
<h2><a name="functions">Function Details</a></h2>
|
||||
|
||||
<h3 class="function"><a name="check_encoding-2">check_encoding/2</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>check_encoding(Encoding, Attributes) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="create_mountpoint-1">create_mountpoint/1</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>create_mountpoint(Tab) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="data_mountpoint-1">data_mountpoint/1</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>data_mountpoint(Tab) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="decode-2">decode/2</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>decode(Val, X2) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="decode_key-1">decode_key/1</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>decode_key(CodedKey::binary()) -> any()</tt><br></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="decode_key-2">decode_key/2</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>decode_key(CodedKey, Enc) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="decode_val-1">decode_val/1</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>decode_val(CodedVal::binary()) -> any()</tt><br></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="decode_val-3">decode_val/3</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>decode_val(CodedVal, K, Ref) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="default_encoding-3">default_encoding/3</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>default_encoding(X1, Type, As) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="delete-3">delete/3</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>delete(Ref, K, Opts) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="encode-2">encode/2</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>encode(Value, X2) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="encode_key-1">encode_key/1</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>encode_key(Key::any()) -> binary()</tt><br></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="encode_key-2">encode_key/2</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>encode_key(Key, X2) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="encode_val-1">encode_val/1</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>encode_val(Val::any()) -> binary()</tt><br></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="encode_val-2">encode_val/2</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>encode_val(Val, Enc) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="keypos-1">keypos/1</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>keypos(Tab) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="open_rocksdb-3">open_rocksdb/3</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>open_rocksdb(MPd, RdbOpts, CFs) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="put-4">put/4</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>put(Ref, K, V, Opts) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="tabname-1">tabname/1</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>tabname(Tab) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="valid_key_type-2">valid_key_type/2</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>valid_key_type(X1, Key) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="valid_obj_type-2">valid_obj_type/2</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>valid_obj_type(X1, Obj) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="write-3">write/3</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>write(X1, L, Opts) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
<hr>
|
||||
|
||||
<div class="navbar"><a name="#navbar_bottom"></a><table width="100%" border="0" cellspacing="0" cellpadding="2" summary="navigation bar"><tr><td><a href="overview-summary.html" target="overviewFrame">Overview</a></td><td><a href="http://www.erlang.org/"><img src="erlang.png" align="right" border="0" alt="erlang logo"></a></td></tr></table></div>
|
||||
<p><i>Generated by EDoc</i></p>
|
||||
</body>
|
||||
</html>
|
||||
96
doc/mnesia_rocksdb_params.html
Normal file
96
doc/mnesia_rocksdb_params.html
Normal file
@ -0,0 +1,96 @@
|
||||
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
|
||||
<html>
|
||||
<head>
|
||||
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
|
||||
<title>Module mnesia_rocksdb_params</title>
|
||||
<link rel="stylesheet" type="text/css" href="stylesheet.css" title="EDoc">
|
||||
</head>
|
||||
<body bgcolor="white">
|
||||
<div class="navbar"><a name="#navbar_top"></a><table width="100%" border="0" cellspacing="0" cellpadding="2" summary="navigation bar"><tr><td><a href="overview-summary.html" target="overviewFrame">Overview</a></td><td><a href="http://www.erlang.org/"><img src="erlang.png" align="right" border="0" alt="erlang logo"></a></td></tr></table></div>
|
||||
<hr>
|
||||
|
||||
<h1>Module mnesia_rocksdb_params</h1>
|
||||
<ul class="index"><li><a href="#index">Function Index</a></li><li><a href="#functions">Function Details</a></li></ul>
|
||||
|
||||
<p><b>Behaviours:</b> <a href="gen_server.html"><tt>gen_server</tt></a>.</p>
|
||||
|
||||
<h2><a name="index">Function Index</a></h2>
|
||||
<table width="100%" border="1" cellspacing="0" cellpadding="2" summary="function index"><tr><td valign="top"><a href="#code_change-3">code_change/3</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#delete-1">delete/1</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#handle_call-3">handle_call/3</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#handle_cast-2">handle_cast/2</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#handle_info-2">handle_info/2</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#init-1">init/1</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#lookup-2">lookup/2</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#start_link-0">start_link/0</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#store-2">store/2</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#terminate-2">terminate/2</a></td><td></td></tr>
|
||||
</table>
|
||||
|
||||
<h2><a name="functions">Function Details</a></h2>
|
||||
|
||||
<h3 class="function"><a name="code_change-3">code_change/3</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>code_change(X1, S, X3) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="delete-1">delete/1</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>delete(Tab) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="handle_call-3">handle_call/3</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>handle_call(X1, X2, S) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="handle_cast-2">handle_cast/2</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>handle_cast(X1, S) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="handle_info-2">handle_info/2</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>handle_info(X1, S) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="init-1">init/1</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>init(X1) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="lookup-2">lookup/2</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>lookup(Tab, Default) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="start_link-0">start_link/0</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>start_link() -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="store-2">store/2</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>store(Tab, Params) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="terminate-2">terminate/2</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>terminate(X1, X2) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
<hr>
|
||||
|
||||
<div class="navbar"><a name="#navbar_bottom"></a><table width="100%" border="0" cellspacing="0" cellpadding="2" summary="navigation bar"><tr><td><a href="overview-summary.html" target="overviewFrame">Overview</a></td><td><a href="http://www.erlang.org/"><img src="erlang.png" align="right" border="0" alt="erlang logo"></a></td></tr></table></div>
|
||||
<p><i>Generated by EDoc</i></p>
|
||||
</body>
|
||||
</html>
|
||||
40
doc/mnesia_rocksdb_sup.html
Normal file
40
doc/mnesia_rocksdb_sup.html
Normal file
@ -0,0 +1,40 @@
|
||||
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
|
||||
<html>
|
||||
<head>
|
||||
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
|
||||
<title>Module mnesia_rocksdb_sup</title>
|
||||
<link rel="stylesheet" type="text/css" href="stylesheet.css" title="EDoc">
|
||||
</head>
|
||||
<body bgcolor="white">
|
||||
<div class="navbar"><a name="#navbar_top"></a><table width="100%" border="0" cellspacing="0" cellpadding="2" summary="navigation bar"><tr><td><a href="overview-summary.html" target="overviewFrame">Overview</a></td><td><a href="http://www.erlang.org/"><img src="erlang.png" align="right" border="0" alt="erlang logo"></a></td></tr></table></div>
|
||||
<hr>
|
||||
|
||||
<h1>Module mnesia_rocksdb_sup</h1>
|
||||
<ul class="index"><li><a href="#index">Function Index</a></li><li><a href="#functions">Function Details</a></li></ul>
|
||||
|
||||
<p><b>Behaviours:</b> <a href="supervisor.html"><tt>supervisor</tt></a>.</p>
|
||||
|
||||
<h2><a name="index">Function Index</a></h2>
|
||||
<table width="100%" border="1" cellspacing="0" cellpadding="2" summary="function index"><tr><td valign="top"><a href="#init-1">init/1</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#start_link-0">start_link/0</a></td><td></td></tr>
|
||||
</table>
|
||||
|
||||
<h2><a name="functions">Function Details</a></h2>
|
||||
|
||||
<h3 class="function"><a name="init-1">init/1</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>init(X1) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="start_link-0">start_link/0</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>start_link() -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
<hr>
|
||||
|
||||
<div class="navbar"><a name="#navbar_bottom"></a><table width="100%" border="0" cellspacing="0" cellpadding="2" summary="navigation bar"><tr><td><a href="overview-summary.html" target="overviewFrame">Overview</a></td><td><a href="http://www.erlang.org/"><img src="erlang.png" align="right" border="0" alt="erlang logo"></a></td></tr></table></div>
|
||||
<p><i>Generated by EDoc</i></p>
|
||||
</body>
|
||||
</html>
|
||||
151
doc/mnesia_rocksdb_tuning.html
Normal file
151
doc/mnesia_rocksdb_tuning.html
Normal file
@ -0,0 +1,151 @@
|
||||
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
|
||||
<html>
|
||||
<head>
|
||||
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
|
||||
<title>Module mnesia_rocksdb_tuning</title>
|
||||
<link rel="stylesheet" type="text/css" href="stylesheet.css" title="EDoc">
|
||||
</head>
|
||||
<body bgcolor="white">
|
||||
<div class="navbar"><a name="#navbar_top"></a><table width="100%" border="0" cellspacing="0" cellpadding="2" summary="navigation bar"><tr><td><a href="overview-summary.html" target="overviewFrame">Overview</a></td><td><a href="http://www.erlang.org/"><img src="erlang.png" align="right" border="0" alt="erlang logo"></a></td></tr></table></div>
|
||||
<hr>
|
||||
|
||||
<h1>Module mnesia_rocksdb_tuning</h1>
|
||||
<ul class="index"><li><a href="#index">Function Index</a></li><li><a href="#functions">Function Details</a></li></ul>
|
||||
|
||||
|
||||
<h2><a name="index">Function Index</a></h2>
|
||||
<table width="100%" border="1" cellspacing="0" cellpadding="2" summary="function index"><tr><td valign="top"><a href="#cache-1">cache/1</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#calc_sizes-0">calc_sizes/0</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#calc_sizes-1">calc_sizes/1</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#count_rdb_tabs-0">count_rdb_tabs/0</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#count_rdb_tabs-1">count_rdb_tabs/1</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#default-1">default/1</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#describe_env-0">describe_env/0</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#get_avail_ram-0">get_avail_ram/0</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#get_maxfiles-0">get_maxfiles/0</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#get_maxfiles-1">get_maxfiles/1</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#ideal_max_files-0">ideal_max_files/0</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#ideal_max_files-1">ideal_max_files/1</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#max_files-1">max_files/1</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#rdb_indexes-0">rdb_indexes/0</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#rdb_indexes-1">rdb_indexes/1</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#rdb_tabs-0">rdb_tabs/0</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#rdb_tabs-1">rdb_tabs/1</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#write_buffer-1">write_buffer/1</a></td><td></td></tr>
|
||||
</table>
|
||||
|
||||
<h2><a name="functions">Function Details</a></h2>
|
||||
|
||||
<h3 class="function"><a name="cache-1">cache/1</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>cache(X1) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="calc_sizes-0">calc_sizes/0</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>calc_sizes() -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="calc_sizes-1">calc_sizes/1</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>calc_sizes(D) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="count_rdb_tabs-0">count_rdb_tabs/0</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>count_rdb_tabs() -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="count_rdb_tabs-1">count_rdb_tabs/1</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>count_rdb_tabs(Db) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="default-1">default/1</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>default(X1) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="describe_env-0">describe_env/0</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>describe_env() -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="get_avail_ram-0">get_avail_ram/0</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>get_avail_ram() -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="get_maxfiles-0">get_maxfiles/0</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>get_maxfiles() -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="get_maxfiles-1">get_maxfiles/1</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>get_maxfiles(X1) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="ideal_max_files-0">ideal_max_files/0</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>ideal_max_files() -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="ideal_max_files-1">ideal_max_files/1</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>ideal_max_files(D) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="max_files-1">max_files/1</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>max_files(X1) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="rdb_indexes-0">rdb_indexes/0</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>rdb_indexes() -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="rdb_indexes-1">rdb_indexes/1</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>rdb_indexes(Db) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="rdb_tabs-0">rdb_tabs/0</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>rdb_tabs() -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="rdb_tabs-1">rdb_tabs/1</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>rdb_tabs(Db) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="write_buffer-1">write_buffer/1</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>write_buffer(X1) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
<hr>
|
||||
|
||||
<div class="navbar"><a name="#navbar_bottom"></a><table width="100%" border="0" cellspacing="0" cellpadding="2" summary="navigation bar"><tr><td><a href="overview-summary.html" target="overviewFrame">Overview</a></td><td><a href="http://www.erlang.org/"><img src="erlang.png" align="right" border="0" alt="erlang logo"></a></td></tr></table></div>
|
||||
<p><i>Generated by EDoc</i></p>
|
||||
</body>
|
||||
</html>
|
||||
24
doc/modules-frame.html
Normal file
24
doc/modules-frame.html
Normal file
@ -0,0 +1,24 @@
|
||||
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
|
||||
<html>
|
||||
<head>
|
||||
<title>The mnesia_rocksdb application</title>
|
||||
<link rel="stylesheet" type="text/css" href="stylesheet.css" title="EDoc">
|
||||
</head>
|
||||
<body bgcolor="white">
|
||||
<h2 class="indextitle">Modules</h2>
|
||||
<table width="100%" border="0" summary="list of modules">
|
||||
<tr><td><a href="mnesia_rocksdb.html" target="overviewFrame" class="module">mnesia_rocksdb</a></td></tr>
|
||||
<tr><td><a href="mnesia_rocksdb_admin.html" target="overviewFrame" class="module">mnesia_rocksdb_admin</a></td></tr>
|
||||
<tr><td><a href="mnesia_rocksdb_app.html" target="overviewFrame" class="module">mnesia_rocksdb_app</a></td></tr>
|
||||
<tr><td><a href="mnesia_rocksdb_lib.html" target="overviewFrame" class="module">mnesia_rocksdb_lib</a></td></tr>
|
||||
<tr><td><a href="mnesia_rocksdb_params.html" target="overviewFrame" class="module">mnesia_rocksdb_params</a></td></tr>
|
||||
<tr><td><a href="mnesia_rocksdb_sup.html" target="overviewFrame" class="module">mnesia_rocksdb_sup</a></td></tr>
|
||||
<tr><td><a href="mnesia_rocksdb_tuning.html" target="overviewFrame" class="module">mnesia_rocksdb_tuning</a></td></tr>
|
||||
<tr><td><a href="mrdb.html" target="overviewFrame" class="module">mrdb</a></td></tr>
|
||||
<tr><td><a href="mrdb_index.html" target="overviewFrame" class="module">mrdb_index</a></td></tr>
|
||||
<tr><td><a href="mrdb_mutex.html" target="overviewFrame" class="module">mrdb_mutex</a></td></tr>
|
||||
<tr><td><a href="mrdb_mutex_serializer.html" target="overviewFrame" class="module">mrdb_mutex_serializer</a></td></tr>
|
||||
<tr><td><a href="mrdb_select.html" target="overviewFrame" class="module">mrdb_select</a></td></tr>
|
||||
<tr><td><a href="mrdb_stats.html" target="overviewFrame" class="module">mrdb_stats</a></td></tr></table>
|
||||
</body>
|
||||
</html>
|
||||
728
doc/mrdb.html
Normal file
728
doc/mrdb.html
Normal file
@ -0,0 +1,728 @@
|
||||
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
|
||||
<html>
|
||||
<head>
|
||||
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
|
||||
<title>Module mrdb</title>
|
||||
<link rel="stylesheet" type="text/css" href="stylesheet.css" title="EDoc">
|
||||
</head>
|
||||
<body bgcolor="white">
|
||||
<div class="navbar"><a name="#navbar_top"></a><table width="100%" border="0" cellspacing="0" cellpadding="2" summary="navigation bar"><tr><td><a href="overview-summary.html" target="overviewFrame">Overview</a></td><td><a href="http://www.erlang.org/"><img src="erlang.png" align="right" border="0" alt="erlang logo"></a></td></tr></table></div>
|
||||
<hr>
|
||||
|
||||
<h1>Module mrdb</h1>
|
||||
<ul class="index"><li><a href="#description">Description</a></li><li><a href="#types">Data Types</a></li><li><a href="#index">Function Index</a></li><li><a href="#functions">Function Details</a></li></ul>Mid-level access API for Mnesia-managed rocksdb tables.
|
||||
|
||||
|
||||
<h2><a name="description">Description</a></h2><p>Mid-level access API for Mnesia-managed rocksdb tables</p>
|
||||
|
||||
<p>This module implements access functions for the mnesia_rocksdb
|
||||
backend plugin. The functions are designed to also support
|
||||
direct access to rocksdb with little overhead. Such direct
|
||||
access will maintain existing indexes, but not support
|
||||
replication.</p>
|
||||
|
||||
<p>Each table has a metadata structure stored as a persistent
|
||||
term for fast access. The structure of the metadata is as
|
||||
follows:</p>
|
||||
|
||||
<pre> #{ name := <Logical table name>
|
||||
, db_ref := <Rocksdb database Ref>
|
||||
, cf_handle := <Rocksdb column family handle>
|
||||
, activity := Ongoing batch or transaction, if any (map())
|
||||
, attr_pos := #{AttrName := Pos}
|
||||
, mode := <Set to 'mnesia' for mnesia access flows>
|
||||
, properties := <Mnesia table props in map format>
|
||||
, type := column_family | standalone
|
||||
}</pre>
|
||||
|
||||
<p>Helper functions like <code>as_batch(Ref, fun(R) -> ... end)</code> and
|
||||
<code>with_iterator(Ref, fun(I) -> ... end)</code> add some extra
|
||||
convenience on top of the <code>rocksdb</code> API.</p>
|
||||
|
||||
Note that no automatic provision exists to manage concurrent
|
||||
updates via mnesia AND direct access to this API. It's advisable
|
||||
to use ONE primary mode of access. If replication is used,
|
||||
the mnesia API will support this, but direct <code>mrdb</code> updates will
|
||||
not be replicated.
|
||||
<h2><a name="types">Data Types</a></h2>
|
||||
|
||||
<h3 class="typedecl"><a name="type-activity">activity()</a></h3>
|
||||
<p><tt>activity() = <a href="#type-tx_activity">tx_activity()</a> | <a href="#type-batch_activity">batch_activity()</a></tt></p>
|
||||
|
||||
|
||||
<h3 class="typedecl"><a name="type-activity_type">activity_type()</a></h3>
|
||||
<p><tt>activity_type() = <a href="#type-mrdb_activity_type">mrdb_activity_type()</a> | <a href="#type-mnesia_activity_type">mnesia_activity_type()</a></tt></p>
|
||||
|
||||
|
||||
<h3 class="typedecl"><a name="type-admin_tab">admin_tab()</a></h3>
|
||||
<p><tt>admin_tab() = {admin, <a href="#type-alias">alias()</a>}</tt></p>
|
||||
|
||||
|
||||
<h3 class="typedecl"><a name="type-alias">alias()</a></h3>
|
||||
<p><tt>alias() = atom()</tt></p>
|
||||
|
||||
|
||||
<h3 class="typedecl"><a name="type-attr_pos">attr_pos()</a></h3>
|
||||
<p><tt>attr_pos() = #{atom() := <a href="#type-pos">pos()</a>}</tt></p>
|
||||
|
||||
|
||||
<h3 class="typedecl"><a name="type-batch_activity">batch_activity()</a></h3>
|
||||
<p><tt>batch_activity() = #{type := batch, handle := <a href="#type-batch_handle">batch_handle()</a>}</tt></p>
|
||||
|
||||
|
||||
<h3 class="typedecl"><a name="type-batch_handle">batch_handle()</a></h3>
|
||||
<p><tt>batch_handle() = <a href="/home/uwiger/ae/mnesia_rocksdb/_build/default/lib/rocksdb/doc/rocksdb.html#type-batch_handle">rocksdb:batch_handle()</a></tt></p>
|
||||
|
||||
|
||||
<h3 class="typedecl"><a name="type-cf_handle">cf_handle()</a></h3>
|
||||
<p><tt>cf_handle() = <a href="/home/uwiger/ae/mnesia_rocksdb/_build/default/lib/rocksdb/doc/rocksdb.html#type-cf_handle">rocksdb:cf_handle()</a></tt></p>
|
||||
|
||||
|
||||
<h3 class="typedecl"><a name="type-db_handle">db_handle()</a></h3>
|
||||
<p><tt>db_handle() = <a href="/home/uwiger/ae/mnesia_rocksdb/_build/default/lib/rocksdb/doc/rocksdb.html#type-db_handle">rocksdb:db_handle()</a></tt></p>
|
||||
|
||||
|
||||
<h3 class="typedecl"><a name="type-db_ref">db_ref()</a></h3>
|
||||
<p><tt>db_ref() = #{name => <a href="#type-table">table()</a>, alias => atom(), vsn => non_neg_integer(), db_ref := <a href="#type-db_handle">db_handle()</a>, cf_handle := <a href="#type-cf_handle">cf_handle()</a>, semantics := <a href="#type-semantics">semantics()</a>, encoding := <a href="#type-encoding">encoding()</a>, attr_pos := <a href="#type-attr_pos">attr_pos()</a>, type := column_family | standalone, status := open | closed | pre_existing, properties := <a href="#type-properties">properties()</a>, mode => mnesia, ix_vals_f => fun((tuple()) -> [any()]), activity => <a href="#type-activity">activity()</a>, term() => term()}</tt></p>
|
||||
|
||||
|
||||
<h3 class="typedecl"><a name="type-encoding">encoding()</a></h3>
|
||||
<p><tt>encoding() = raw | sext | term | {<a href="#type-key_encoding">key_encoding()</a>, <a href="#type-val_encoding">val_encoding()</a>}</tt></p>
|
||||
|
||||
|
||||
<h3 class="typedecl"><a name="type-error">error()</a></h3>
|
||||
<p><tt>error() = {error, any()}</tt></p>
|
||||
|
||||
|
||||
<h3 class="typedecl"><a name="type-index">index()</a></h3>
|
||||
<p><tt>index() = {<a href="#type-tab_name">tab_name()</a>, index, any()}</tt></p>
|
||||
|
||||
|
||||
<h3 class="typedecl"><a name="type-index_position">index_position()</a></h3>
|
||||
<p><tt>index_position() = atom() | <a href="#type-pos">pos()</a></tt></p>
|
||||
|
||||
|
||||
<h3 class="typedecl"><a name="type-inner">inner()</a></h3>
|
||||
<p><tt>inner() = non_neg_integer()</tt></p>
|
||||
|
||||
|
||||
<h3 class="typedecl"><a name="type-iterator_action">iterator_action()</a></h3>
|
||||
<p><tt>iterator_action() = first | last | next | prev | binary() | {seek, binary()} | {seek_for_prev, binary()}</tt></p>
|
||||
|
||||
|
||||
<h3 class="typedecl"><a name="type-itr_handle">itr_handle()</a></h3>
|
||||
<p><tt>itr_handle() = <a href="/home/uwiger/ae/mnesia_rocksdb/_build/default/lib/rocksdb/doc/rocksdb.html#type-itr_handle">rocksdb:itr_handle()</a></tt></p>
|
||||
|
||||
|
||||
<h3 class="typedecl"><a name="type-key">key()</a></h3>
|
||||
<p><tt>key() = any()</tt></p>
|
||||
|
||||
|
||||
<h3 class="typedecl"><a name="type-key_encoding">key_encoding()</a></h3>
|
||||
<p><tt>key_encoding() = raw | sext | term</tt></p>
|
||||
|
||||
|
||||
<h3 class="typedecl"><a name="type-mnesia_activity_type">mnesia_activity_type()</a></h3>
|
||||
<p><tt>mnesia_activity_type() = transaction | sync_transaction | async_dirty | sync_dirty</tt></p>
|
||||
|
||||
|
||||
<h3 class="typedecl"><a name="type-mrdb_activity_type">mrdb_activity_type()</a></h3>
|
||||
<p><tt>mrdb_activity_type() = tx | {tx, <a href="#type-tx_options">tx_options()</a>} | batch</tt></p>
|
||||
|
||||
|
||||
<h3 class="typedecl"><a name="type-mrdb_iterator">mrdb_iterator()</a></h3>
|
||||
<p><tt>mrdb_iterator() = #mrdb_iter{i = <a href="#type-itr_handle">itr_handle()</a>, ref = <a href="#type-db_ref">db_ref()</a>}</tt></p>
|
||||
|
||||
|
||||
<h3 class="typedecl"><a name="type-obj">obj()</a></h3>
|
||||
<p><tt>obj() = tuple()</tt></p>
|
||||
|
||||
|
||||
<h3 class="typedecl"><a name="type-outer">outer()</a></h3>
|
||||
<p><tt>outer() = non_neg_integer()</tt></p>
|
||||
|
||||
|
||||
<h3 class="typedecl"><a name="type-pos">pos()</a></h3>
|
||||
<p><tt>pos() = non_neg_integer()</tt></p>
|
||||
|
||||
|
||||
<h3 class="typedecl"><a name="type-properties">properties()</a></h3>
|
||||
<p><tt>properties() = #{record_name := atom(), attributes := [atom()], index := [{<a href="#type-pos">pos()</a>, bag | ordered}]}</tt></p>
|
||||
|
||||
|
||||
<h3 class="typedecl"><a name="type-read_options">read_options()</a></h3>
|
||||
<p><tt>read_options() = [{verify_checksums, boolean()} | {fill_cache, boolean()} | {iterate_upper_bound, binary()} | {iterate_lower_bound, binary()} | {tailing, boolean()} | {total_order_seek, boolean()} | {prefix_same_as_start, boolean()} | {snapshot, <a href="#type-snapshot_handle">snapshot_handle()</a>}]</tt></p>
|
||||
|
||||
|
||||
<h3 class="typedecl"><a name="type-ref_or_tab">ref_or_tab()</a></h3>
|
||||
<p><tt>ref_or_tab() = <a href="#type-table">table()</a> | <a href="#type-db_ref">db_ref()</a></tt></p>
|
||||
|
||||
|
||||
<h3 class="typedecl"><a name="type-retainer">retainer()</a></h3>
|
||||
<p><tt>retainer() = {<a href="#type-tab_name">tab_name()</a>, retainer, any()}</tt></p>
|
||||
|
||||
|
||||
<h3 class="typedecl"><a name="type-retries">retries()</a></h3>
|
||||
<p><tt>retries() = <a href="#type-outer">outer()</a> | {<a href="#type-inner">inner()</a>, <a href="#type-outer">outer()</a>}</tt></p>
|
||||
|
||||
|
||||
<h3 class="typedecl"><a name="type-semantics">semantics()</a></h3>
|
||||
<p><tt>semantics() = bag | set</tt></p>
|
||||
|
||||
|
||||
<h3 class="typedecl"><a name="type-snapshot_handle">snapshot_handle()</a></h3>
|
||||
<p><tt>snapshot_handle() = <a href="/home/uwiger/ae/mnesia_rocksdb/_build/default/lib/rocksdb/doc/rocksdb.html#type-snapshot_handle">rocksdb:snapshot_handle()</a></tt></p>
|
||||
|
||||
|
||||
<h3 class="typedecl"><a name="type-tab_name">tab_name()</a></h3>
|
||||
<p><tt>tab_name() = atom()</tt></p>
|
||||
|
||||
|
||||
<h3 class="typedecl"><a name="type-table">table()</a></h3>
|
||||
<p><tt>table() = atom() | <a href="#type-admin_tab">admin_tab()</a> | <a href="#type-index">index()</a> | <a href="#type-retainer">retainer()</a></tt></p>
|
||||
|
||||
|
||||
<h3 class="typedecl"><a name="type-tx_activity">tx_activity()</a></h3>
|
||||
<p><tt>tx_activity() = #{type := tx, handle := <a href="#type-tx_handle">tx_handle()</a>, attempt := undefined | <a href="#type-retries">retries()</a>}</tt></p>
|
||||
|
||||
|
||||
<h3 class="typedecl"><a name="type-tx_handle">tx_handle()</a></h3>
|
||||
<p><tt>tx_handle() = <a href="/home/uwiger/ae/mnesia_rocksdb/_build/default/lib/rocksdb/doc/rocksdb.html#type-transaction_handle">rocksdb:transaction_handle()</a></tt></p>
|
||||
|
||||
|
||||
<h3 class="typedecl"><a name="type-tx_options">tx_options()</a></h3>
|
||||
<p><tt>tx_options() = #{retries => <a href="#type-retries">retries()</a>, no_snapshot => boolean()}</tt></p>
|
||||
|
||||
|
||||
<h3 class="typedecl"><a name="type-val_encoding">val_encoding()</a></h3>
|
||||
<p><tt>val_encoding() = {value | object, term | raw} | raw</tt></p>
|
||||
|
||||
|
||||
<h3 class="typedecl"><a name="type-write_options">write_options()</a></h3>
|
||||
<p><tt>write_options() = [{sync, boolean()} | {disable_wal, boolean()} | {ignore_missing_column_families, boolean()} | {no_slowdown, boolean()} | {low_pri, boolean()}]</tt></p>
|
||||
|
||||
|
||||
<h2><a name="index">Function Index</a></h2>
|
||||
<table width="100%" border="1" cellspacing="0" cellpadding="2" summary="function index"><tr><td valign="top"><a href="#abort-1">abort/1</a></td><td>Aborts an ongoing <a docgen-rel="seemfa" docgen-href="#activity/2" href="#activity-2"><code>activity/2</code></a></td></tr>
|
||||
<tr><td valign="top"><a href="#activity-3">activity/3</a></td><td>Run an activity (similar to <a docgen-rel="seemfa" docgen-href="mnesia:mnesia#activity/2" href="/home/uwiger/ae/mnesia/doc/mnesia.html#activity-2"><code>//mnesia/mnesia:activity/2</code></a>).</td></tr>
|
||||
<tr><td valign="top"><a href="#alias_of-1">alias_of/1</a></td><td>Returns the alias of a given table or table reference.</td></tr>
|
||||
<tr><td valign="top"><a href="#as_batch-2">as_batch/2</a></td><td>Creates a <code>rocksdb</code> batch context and executes the fun <code>F</code> in it.</td></tr>
|
||||
<tr><td valign="top"><a href="#as_batch-3">as_batch/3</a></td><td>as <a docgen-rel="seemfa" docgen-href="#as_batch/2" href="#as_batch-2"><code>as_batch/2</code></a>, but with the ability to pass <code>Opts</code> to <code>rocksdb:write_batch/2</code></td></tr>
|
||||
<tr><td valign="top"><a href="#batch_write-2">batch_write/2</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#batch_write-3">batch_write/3</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#clear_table-1">clear_table/1</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#current_context-0">current_context/0</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#delete-2">delete/2</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#delete-3">delete/3</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#delete_object-2">delete_object/2</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#delete_object-3">delete_object/3</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#ensure_ref-1">ensure_ref/1</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#ensure_ref-2">ensure_ref/2</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#first-1">first/1</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#first-2">first/2</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#fold-3">fold/3</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#fold-4">fold/4</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#fold-5">fold/5</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#get_batch-1">get_batch/1</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#get_ref-1">get_ref/1</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#index_read-3">index_read/3</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#insert-2">insert/2</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#insert-3">insert/3</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#iterator-1">iterator/1</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#iterator-2">iterator/2</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#iterator_close-1">iterator_close/1</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#iterator_move-2">iterator_move/2</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#last-1">last/1</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#last-2">last/2</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#match_delete-2">match_delete/2</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#new_tx-1">new_tx/1</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#new_tx-2">new_tx/2</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#next-2">next/2</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#next-3">next/3</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#prev-2">prev/2</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#prev-3">prev/3</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#rdb_delete-2">rdb_delete/2</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#rdb_delete-3">rdb_delete/3</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#rdb_fold-4">rdb_fold/4</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#rdb_fold-5">rdb_fold/5</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#rdb_get-2">rdb_get/2</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#rdb_get-3">rdb_get/3</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#rdb_iterator-1">rdb_iterator/1</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#rdb_iterator-2">rdb_iterator/2</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#rdb_iterator_move-2">rdb_iterator_move/2</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#rdb_put-3">rdb_put/3</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#rdb_put-4">rdb_put/4</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#read-2">read/2</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#read-3">read/3</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#read_info-1">read_info/1</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#read_info-2">read_info/2</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#release_snapshot-1">release_snapshot/1</a></td><td>release a snapshot created by <a docgen-rel="seemfa" docgen-href="#snapshot/1" href="#snapshot-1"><code>snapshot/1</code></a>.</td></tr>
|
||||
<tr><td valign="top"><a href="#select-1">select/1</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#select-2">select/2</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#select-3">select/3</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#snapshot-1">snapshot/1</a></td><td>Create a snapshot of the database instance associated with the
|
||||
table reference, table name or alias.</td></tr>
|
||||
<tr><td valign="top"><a href="#tx_commit-1">tx_commit/1</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#tx_ref-2">tx_ref/2</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#update_counter-3">update_counter/3</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#update_counter-4">update_counter/4</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#with_iterator-2">with_iterator/2</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#with_iterator-3">with_iterator/3</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#with_rdb_iterator-2">with_rdb_iterator/2</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#with_rdb_iterator-3">with_rdb_iterator/3</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#write_info-3">write_info/3</a></td><td></td></tr>
|
||||
</table>
|
||||
|
||||
<h2><a name="functions">Function Details</a></h2>
|
||||
|
||||
<h3 class="function"><a name="abort-1">abort/1</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>abort(Reason) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div><p>Aborts an ongoing <a docgen-rel="seemfa" docgen-href="#activity/2" href="#activity-2"><code>activity/2</code></a></p>
|
||||
|
||||
<h3 class="function"><a name="activity-3">activity/3</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>activity(Type::<a href="#type-activity_type">activity_type()</a>, Alias::<a href="#type-alias">alias()</a>, F::fun(() -> Res)) -> Res</tt><br></p>
|
||||
<p> </p>
|
||||
</div><p><p>Run an activity (similar to <a docgen-rel="seemfa" docgen-href="mnesia:mnesia#activity/2" href="/home/uwiger/ae/mnesia/doc/mnesia.html#activity-2"><code>//mnesia/mnesia:activity/2</code></a>).</p>
|
||||
|
||||
Supported activity types are:
|
||||
<ul>
|
||||
<li> <code>transaction</code> - An optimistic <code>rocksdb</code> transaction</li>
|
||||
<li> <code>{tx, TxOpts}</code> - A <code>rocksdb</code> transaction with sligth modifications</li>
|
||||
<li> <code>batch</code> - A <code>rocksdb</code> batch operation</li>
|
||||
</ul>
|
||||
|
||||
<p>By default, transactions are combined with a snapshot with 1 retry.
|
||||
The snapshot ensures that writes from concurrent transactions don't leak into the transaction context.
|
||||
A transaction will be retried if it detects that the commit set conflicts with recent changes.
|
||||
A mutex is used to ensure that only one of potentially conflicting <code>mrdb</code> transactions is run at a time.
|
||||
The re-run transaction may still fail, if new transactions, or non-transaction writes interfere with
|
||||
the commit set. It will then be re-run again, until the retry count is exhausted.</p>
|
||||
|
||||
<p>For finer-grained retries, it's possible to set <code>retries => {Inner, Outer}</code>. Setting the retries to a
|
||||
single number, <code>Retries</code>, is analogous to <code>{0, Retries}`. Each outer retry requests a</code>mutex lock' by
|
||||
waiting in a FIFO queue. Once it receives the lock, it will try the activity once + as many retries
|
||||
as specified by <code>Inner</code>. If these fail, the activity again goes to the FIFO queue (ending up last
|
||||
in line) if there are outer retries remaining. When all retries are exhaused, the activity aborts
|
||||
with <code>retry_limit</code>. Note that transactions, being optimistic, do not request a lock on the first
|
||||
attempt, but only on outer retries (the first retry is always an outer retry).</p>
|
||||
|
||||
<p>Valid <code>TxOpts</code> are <code>#{no_snapshot => boolean(), retries => retries()}</code>.</p>
|
||||
|
||||
To simplify code adaptation, <code>tx | transaction | sync_transaction</code> are synonyms, and
|
||||
<code>batch | async_dirty | sync_dirty</code> are synonyms.</p>
|
||||
|
||||
<h3 class="function"><a name="alias_of-1">alias_of/1</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>alias_of(Tab::<a href="#type-ref_or_tab">ref_or_tab()</a>) -> <a href="#type-alias">alias()</a></tt><br></p>
|
||||
<p> </p>
|
||||
</div><p>Returns the alias of a given table or table reference.</p>
|
||||
|
||||
<h3 class="function"><a name="as_batch-2">as_batch/2</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>as_batch(Tab::<a href="#type-ref_or_tab">ref_or_tab()</a>, F::fun((<a href="#type-db_ref">db_ref()</a>) -> Res)) -> Res</tt><br></p>
|
||||
<p> </p>
|
||||
</div><p><p>Creates a <code>rocksdb</code> batch context and executes the fun <code>F</code> in it.</p>
|
||||
|
||||
%% Rocksdb batches aren't tied to a specific DbRef until written.
|
||||
This can cause surprising problems if we're juggling multiple
|
||||
rocksdb instances (as we do if we have standalone tables).
|
||||
At the time of writing, all objects end up in the DbRef the batch
|
||||
is written to, albeit not necessarily in the intended column family.
|
||||
This will probably change, but no failure mode is really acceptable.
|
||||
The code below ensures that separate batches are created for each
|
||||
DbRef, under a unique reference stored in the pdict. When writing,
|
||||
all batches are written separately to the corresponding DbRef,
|
||||
and when releasing, all batches are released. This will not ensure
|
||||
atomicity, but there is no way in rocksdb to achieve atomicity
|
||||
across db instances. At least, data should end up where you expect.
|
||||
</p>
|
||||
|
||||
<h3 class="function"><a name="as_batch-3">as_batch/3</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>as_batch(Tab, F, Opts) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div><p>as <a docgen-rel="seemfa" docgen-href="#as_batch/2" href="#as_batch-2"><code>as_batch/2</code></a>, but with the ability to pass <code>Opts</code> to <code>rocksdb:write_batch/2</code></p>
|
||||
|
||||
<h3 class="function"><a name="batch_write-2">batch_write/2</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>batch_write(Tab, L) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="batch_write-3">batch_write/3</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>batch_write(Tab, L, Opts) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="clear_table-1">clear_table/1</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>clear_table(Tab) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="current_context-0">current_context/0</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>current_context() -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="delete-2">delete/2</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>delete(Tab::<a href="#type-ref_or_tab">ref_or_tab()</a>, Key::<a href="#type-key">key()</a>) -> ok</tt><br></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="delete-3">delete/3</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>delete(Tab::<a href="#type-ref_or_tab">ref_or_tab()</a>, Key::<a href="#type-key">key()</a>, Opts::<a href="#type-write_options">write_options()</a>) -> ok</tt><br></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="delete_object-2">delete_object/2</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>delete_object(Tab, Obj) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="delete_object-3">delete_object/3</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>delete_object(Tab, Obj, Opts) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="ensure_ref-1">ensure_ref/1</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>ensure_ref(R::<a href="#type-ref_or_tab">ref_or_tab()</a>) -> <a href="#type-db_ref">db_ref()</a></tt><br></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="ensure_ref-2">ensure_ref/2</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>ensure_ref(Ref, R) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="first-1">first/1</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>first(Tab::<a href="#type-ref_or_tab">ref_or_tab()</a>) -> <a href="#type-key">key()</a> | '$end_of_table'</tt><br></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="first-2">first/2</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>first(Tab::<a href="#type-ref_or_tab">ref_or_tab()</a>, Opts::<a href="#type-read_options">read_options()</a>) -> <a href="#type-key">key()</a> | '$end_of_table'</tt><br></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="fold-3">fold/3</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>fold(Tab, Fun, Acc) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="fold-4">fold/4</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>fold(Tab, Fun, Acc, MatchSpec) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="fold-5">fold/5</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>fold(Tab, Fun, Acc, MatchSpec, Limit) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="get_batch-1">get_batch/1</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>get_batch(X1) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="get_ref-1">get_ref/1</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>get_ref(Tab::<a href="#type-table">table()</a>) -> <a href="#type-db_ref">db_ref()</a></tt><br></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="index_read-3">index_read/3</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>index_read(Tab, Val, Ix) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="insert-2">insert/2</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>insert(Tab::<a href="#type-ref_or_tab">ref_or_tab()</a>, Obj::<a href="#type-obj">obj()</a>) -> ok</tt><br></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="insert-3">insert/3</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>insert(Tab::<a href="#type-ref_or_tab">ref_or_tab()</a>, Obj0::<a href="#type-obj">obj()</a>, Opts::<a href="#type-write_options">write_options()</a>) -> ok</tt><br></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="iterator-1">iterator/1</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>iterator(Tab::<a href="#type-ref_or_tab">ref_or_tab()</a>) -> {ok, <a href="#type-mrdb_iterator">mrdb_iterator()</a>} | {error, term()}</tt><br></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="iterator-2">iterator/2</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>iterator(Tab::<a href="#type-ref_or_tab">ref_or_tab()</a>, Opts::<a href="#type-read_options">read_options()</a>) -> {ok, <a href="#type-mrdb_iterator">mrdb_iterator()</a>} | {error, term()}</tt><br></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="iterator_close-1">iterator_close/1</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>iterator_close(Mrdb_iter::<a href="#type-mrdb_iterator">mrdb_iterator()</a>) -> ok</tt><br></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="iterator_move-2">iterator_move/2</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>iterator_move(Mrdb_iter::<a href="#type-mrdb_iterator">mrdb_iterator()</a>, Dir::<a href="#type-iterator_action">iterator_action()</a>) -> {ok, tuple()} | {error, any()}</tt><br></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="last-1">last/1</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>last(Tab::<a href="#type-ref_or_tab">ref_or_tab()</a>) -> <a href="#type-key">key()</a> | '$end_of_table'</tt><br></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="last-2">last/2</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>last(Tab::<a href="#type-ref_or_tab">ref_or_tab()</a>, Opts::<a href="#type-read_options">read_options()</a>) -> <a href="#type-key">key()</a> | '$end_of_table'</tt><br></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="match_delete-2">match_delete/2</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>match_delete(Tab, Pat) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="new_tx-1">new_tx/1</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>new_tx(Tab::<a href="#type-table">table()</a> | <a href="#type-db_ref">db_ref()</a>) -> <a href="#type-db_ref">db_ref()</a></tt><br></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="new_tx-2">new_tx/2</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>new_tx(Tab::<a href="#type-ref_or_tab">ref_or_tab()</a>, Opts::<a href="#type-write_options">write_options()</a>) -> <a href="#type-db_ref">db_ref()</a></tt><br></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="next-2">next/2</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>next(Tab::<a href="#type-ref_or_tab">ref_or_tab()</a>, K::<a href="#type-key">key()</a>) -> <a href="#type-key">key()</a> | '$end_of_table'</tt><br></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="next-3">next/3</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>next(Tab::<a href="#type-ref_or_tab">ref_or_tab()</a>, K::<a href="#type-key">key()</a>, Opts::<a href="#type-read_options">read_options()</a>) -> <a href="#type-key">key()</a> | '$end_of_table'</tt><br></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="prev-2">prev/2</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>prev(Tab::<a href="#type-ref_or_tab">ref_or_tab()</a>, K::<a href="#type-key">key()</a>) -> <a href="#type-key">key()</a> | '$end_of_table'</tt><br></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="prev-3">prev/3</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>prev(Tab::<a href="#type-ref_or_tab">ref_or_tab()</a>, K::<a href="#type-key">key()</a>, Opts::<a href="#type-read_options">read_options()</a>) -> <a href="#type-key">key()</a> | '$end_of_table'</tt><br></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="rdb_delete-2">rdb_delete/2</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>rdb_delete(R, K) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="rdb_delete-3">rdb_delete/3</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>rdb_delete(R, K, Opts) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="rdb_fold-4">rdb_fold/4</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>rdb_fold(Tab, Fun, Acc, Prefix) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="rdb_fold-5">rdb_fold/5</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>rdb_fold(Tab, Fun, Acc, Prefix, Limit) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="rdb_get-2">rdb_get/2</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>rdb_get(R, K) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="rdb_get-3">rdb_get/3</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>rdb_get(R, K, Opts) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="rdb_iterator-1">rdb_iterator/1</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>rdb_iterator(R) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="rdb_iterator-2">rdb_iterator/2</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>rdb_iterator(R, Opts) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="rdb_iterator_move-2">rdb_iterator_move/2</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>rdb_iterator_move(I, Dir) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="rdb_put-3">rdb_put/3</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>rdb_put(R, K, V) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="rdb_put-4">rdb_put/4</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>rdb_put(R, K, V, Opts) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="read-2">read/2</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>read(Tab, Key) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="read-3">read/3</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>read(Tab, Key, Opts) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="read_info-1">read_info/1</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>read_info(Tab) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="read_info-2">read_info/2</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>read_info(Tab, K) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="release_snapshot-1">release_snapshot/1</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>release_snapshot(SHandle::<a href="#type-snapshot_handle">snapshot_handle()</a>) -> ok | <a href="#type-error">error()</a></tt><br></p>
|
||||
<p> </p>
|
||||
</div><p>release a snapshot created by <a docgen-rel="seemfa" docgen-href="#snapshot/1" href="#snapshot-1"><code>snapshot/1</code></a>.</p>
|
||||
|
||||
<h3 class="function"><a name="select-1">select/1</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>select(Cont) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="select-2">select/2</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>select(Tab, Pat) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="select-3">select/3</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>select(Tab, Pat, Limit) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="snapshot-1">snapshot/1</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>snapshot(Name::<a href="#type-alias">alias()</a> | <a href="#type-ref_or_tab">ref_or_tab()</a>) -> {ok, <a href="#type-snapshot_handle">snapshot_handle()</a>} | <a href="#type-error">error()</a></tt><br></p>
|
||||
<p> </p>
|
||||
</div><p><p>Create a snapshot of the database instance associated with the
|
||||
table reference, table name or alias.</p>
|
||||
|
||||
Snapshots provide consistent read-only views over the entire state of the key-value store.</p>
|
||||
|
||||
<h3 class="function"><a name="tx_commit-1">tx_commit/1</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>tx_commit(TxH::<a href="#type-tx_handle">tx_handle()</a> | <a href="#type-db_ref">db_ref()</a>) -> ok</tt><br></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="tx_ref-2">tx_ref/2</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>tx_ref(Tab::<a href="#type-ref_or_tab">ref_or_tab()</a> | <a href="#type-db_ref">db_ref()</a> | <a href="#type-db_ref">db_ref()</a>, TxH::<a href="#type-tx_handle">tx_handle()</a>) -> <a href="#type-db_ref">db_ref()</a></tt><br></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="update_counter-3">update_counter/3</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>update_counter(Tab, C, Val) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="update_counter-4">update_counter/4</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>update_counter(Tab, C, Val, Opts) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="with_iterator-2">with_iterator/2</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>with_iterator(Tab::<a href="#type-ref_or_tab">ref_or_tab()</a>, Fun::fun((<a href="#type-mrdb_iterator">mrdb_iterator()</a>) -> Res)) -> Res</tt><br></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="with_iterator-3">with_iterator/3</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>with_iterator(Tab::<a href="#type-ref_or_tab">ref_or_tab()</a>, Fun::fun((<a href="#type-mrdb_iterator">mrdb_iterator()</a>) -> Res), Opts::<a href="#type-read_options">read_options()</a>) -> Res</tt><br></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="with_rdb_iterator-2">with_rdb_iterator/2</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>with_rdb_iterator(Tab::<a href="#type-ref_or_tab">ref_or_tab()</a>, Fun::fun((<a href="#type-itr_handle">itr_handle()</a>) -> Res)) -> Res</tt><br></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="with_rdb_iterator-3">with_rdb_iterator/3</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>with_rdb_iterator(Tab::<a href="#type-ref_or_tab">ref_or_tab()</a>, Fun::fun((<a href="#type-itr_handle">itr_handle()</a>) -> Res), Opts::<a href="#type-read_options">read_options()</a>) -> Res</tt><br></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="write_info-3">write_info/3</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>write_info(Tab, K, V) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
<hr>
|
||||
|
||||
<div class="navbar"><a name="#navbar_bottom"></a><table width="100%" border="0" cellspacing="0" cellpadding="2" summary="navigation bar"><tr><td><a href="overview-summary.html" target="overviewFrame">Overview</a></td><td><a href="http://www.erlang.org/"><img src="erlang.png" align="right" border="0" alt="erlang logo"></a></td></tr></table></div>
|
||||
<p><i>Generated by EDoc</i></p>
|
||||
</body>
|
||||
</html>
|
||||
71
doc/mrdb_index.html
Normal file
71
doc/mrdb_index.html
Normal file
@ -0,0 +1,71 @@
|
||||
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
|
||||
<html>
|
||||
<head>
|
||||
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
|
||||
<title>Module mrdb_index</title>
|
||||
<link rel="stylesheet" type="text/css" href="stylesheet.css" title="EDoc">
|
||||
</head>
|
||||
<body bgcolor="white">
|
||||
<div class="navbar"><a name="#navbar_top"></a><table width="100%" border="0" cellspacing="0" cellpadding="2" summary="navigation bar"><tr><td><a href="overview-summary.html" target="overviewFrame">Overview</a></td><td><a href="http://www.erlang.org/"><img src="erlang.png" align="right" border="0" alt="erlang logo"></a></td></tr></table></div>
|
||||
<hr>
|
||||
|
||||
<h1>Module mrdb_index</h1>
|
||||
<ul class="index"><li><a href="#types">Data Types</a></li><li><a href="#index">Function Index</a></li><li><a href="#functions">Function Details</a></li></ul>
|
||||
|
||||
|
||||
<h2><a name="types">Data Types</a></h2>
|
||||
|
||||
<h3 class="typedecl"><a name="type-index_value">index_value()</a></h3>
|
||||
<p><tt>index_value() = any()</tt></p>
|
||||
|
||||
|
||||
<h3 class="typedecl"><a name="type-iterator_action">iterator_action()</a></h3>
|
||||
<p><tt>iterator_action() = <a href="/home/uwiger/ae/mnesia_rocksdb/doc/mrdb.html#type-iterator_action">mrdb:iterator_action()</a></tt></p>
|
||||
|
||||
|
||||
<h3 class="typedecl"><a name="type-ix_iterator">ix_iterator()</a></h3>
|
||||
<p><tt>ix_iterator() = #mrdb_ix_iter{i = <a href="/home/uwiger/ae/mnesia_rocksdb/doc/mrdb.html#type-iterator">mrdb:iterator()</a>, type = set | bag, sub = <a href="/home/uwiger/ae/mnesia_rocksdb/doc/mrdb.html#type-ref">mrdb:ref()</a> | pid()}</tt></p>
|
||||
|
||||
|
||||
<h3 class="typedecl"><a name="type-object">object()</a></h3>
|
||||
<p><tt>object() = tuple()</tt></p>
|
||||
|
||||
|
||||
<h2><a name="index">Function Index</a></h2>
|
||||
<table width="100%" border="1" cellspacing="0" cellpadding="2" summary="function index"><tr><td valign="top"><a href="#iterator-2">iterator/2</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#iterator_close-1">iterator_close/1</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#iterator_move-2">iterator_move/2</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#with_iterator-3">with_iterator/3</a></td><td></td></tr>
|
||||
</table>
|
||||
|
||||
<h2><a name="functions">Function Details</a></h2>
|
||||
|
||||
<h3 class="function"><a name="iterator-2">iterator/2</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>iterator(Tab::<a href="/home/uwiger/ae/mnesia_rocksdb/doc/mrdb.html#type-ref_or_tab">mrdb:ref_or_tab()</a>, IxPos::<a href="/home/uwiger/ae/mnesia_rocksdb/doc/mrdb.html#type-index_position">mrdb:index_position()</a>) -> {ok, <a href="#type-ix_iterator">ix_iterator()</a>} | {error, term()}</tt><br></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="iterator_close-1">iterator_close/1</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>iterator_close(Mrdb_ix_iter::<a href="#type-ix_iterator">ix_iterator()</a>) -> ok</tt><br></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="iterator_move-2">iterator_move/2</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>iterator_move(Mrdb_ix_iter::<a href="#type-ix_iterator">ix_iterator()</a>, Dir::<a href="#type-iterator_action">iterator_action()</a>) -> {ok, <a href="#type-index_value">index_value()</a>, <a href="#type-object">object()</a>} | {error, term()}</tt><br></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="with_iterator-3">with_iterator/3</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>with_iterator(Tab::<a href="/home/uwiger/ae/mnesia_rocksdb/doc/mrdb.html#type-ref_or_tab">mrdb:ref_or_tab()</a>, IxPos::<a href="/home/uwiger/ae/mnesia_rocksdb/doc/mrdb.html#type-index_position">mrdb:index_position()</a>, Fun::fun((<a href="#type-ix_iterator">ix_iterator()</a>) -> Res)) -> Res</tt><br></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
<hr>
|
||||
|
||||
<div class="navbar"><a name="#navbar_bottom"></a><table width="100%" border="0" cellspacing="0" cellpadding="2" summary="navigation bar"><tr><td><a href="overview-summary.html" target="overviewFrame">Overview</a></td><td><a href="http://www.erlang.org/"><img src="erlang.png" align="right" border="0" alt="erlang logo"></a></td></tr></table></div>
|
||||
<p><i>Generated by EDoc</i></p>
|
||||
</body>
|
||||
</html>
|
||||
32
doc/mrdb_mutex.html
Normal file
32
doc/mrdb_mutex.html
Normal file
@ -0,0 +1,32 @@
|
||||
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
|
||||
<html>
|
||||
<head>
|
||||
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
|
||||
<title>Module mrdb_mutex</title>
|
||||
<link rel="stylesheet" type="text/css" href="stylesheet.css" title="EDoc">
|
||||
</head>
|
||||
<body bgcolor="white">
|
||||
<div class="navbar"><a name="#navbar_top"></a><table width="100%" border="0" cellspacing="0" cellpadding="2" summary="navigation bar"><tr><td><a href="overview-summary.html" target="overviewFrame">Overview</a></td><td><a href="http://www.erlang.org/"><img src="erlang.png" align="right" border="0" alt="erlang logo"></a></td></tr></table></div>
|
||||
<hr>
|
||||
|
||||
<h1>Module mrdb_mutex</h1>
|
||||
<ul class="index"><li><a href="#index">Function Index</a></li><li><a href="#functions">Function Details</a></li></ul>
|
||||
|
||||
|
||||
<h2><a name="index">Function Index</a></h2>
|
||||
<table width="100%" border="1" cellspacing="0" cellpadding="2" summary="function index"><tr><td valign="top"><a href="#do-2">do/2</a></td><td></td></tr>
|
||||
</table>
|
||||
|
||||
<h2><a name="functions">Function Details</a></h2>
|
||||
|
||||
<h3 class="function"><a name="do-2">do/2</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>do(Rsrc, F) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
<hr>
|
||||
|
||||
<div class="navbar"><a name="#navbar_bottom"></a><table width="100%" border="0" cellspacing="0" cellpadding="2" summary="navigation bar"><tr><td><a href="overview-summary.html" target="overviewFrame">Overview</a></td><td><a href="http://www.erlang.org/"><img src="erlang.png" align="right" border="0" alt="erlang logo"></a></td></tr></table></div>
|
||||
<p><i>Generated by EDoc</i></p>
|
||||
</body>
|
||||
</html>
|
||||
88
doc/mrdb_mutex_serializer.html
Normal file
88
doc/mrdb_mutex_serializer.html
Normal file
@ -0,0 +1,88 @@
|
||||
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
|
||||
<html>
|
||||
<head>
|
||||
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
|
||||
<title>Module mrdb_mutex_serializer</title>
|
||||
<link rel="stylesheet" type="text/css" href="stylesheet.css" title="EDoc">
|
||||
</head>
|
||||
<body bgcolor="white">
|
||||
<div class="navbar"><a name="#navbar_top"></a><table width="100%" border="0" cellspacing="0" cellpadding="2" summary="navigation bar"><tr><td><a href="overview-summary.html" target="overviewFrame">Overview</a></td><td><a href="http://www.erlang.org/"><img src="erlang.png" align="right" border="0" alt="erlang logo"></a></td></tr></table></div>
|
||||
<hr>
|
||||
|
||||
<h1>Module mrdb_mutex_serializer</h1>
|
||||
<ul class="index"><li><a href="#index">Function Index</a></li><li><a href="#functions">Function Details</a></li></ul>
|
||||
|
||||
|
||||
<h2><a name="index">Function Index</a></h2>
|
||||
<table width="100%" border="1" cellspacing="0" cellpadding="2" summary="function index"><tr><td valign="top"><a href="#code_change-3">code_change/3</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#done-2">done/2</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#handle_call-3">handle_call/3</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#handle_cast-2">handle_cast/2</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#handle_info-2">handle_info/2</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#init-1">init/1</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#start_link-0">start_link/0</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#terminate-2">terminate/2</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#wait-1">wait/1</a></td><td></td></tr>
|
||||
</table>
|
||||
|
||||
<h2><a name="functions">Function Details</a></h2>
|
||||
|
||||
<h3 class="function"><a name="code_change-3">code_change/3</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>code_change(FromVsn, St, Extra) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="done-2">done/2</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>done(Rsrc, Ref) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="handle_call-3">handle_call/3</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>handle_call(X1, From, St) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="handle_cast-2">handle_cast/2</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>handle_cast(X1, St) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="handle_info-2">handle_info/2</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>handle_info(X1, St) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="init-1">init/1</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>init(X1) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="start_link-0">start_link/0</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>start_link() -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="terminate-2">terminate/2</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>terminate(X1, X2) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="wait-1">wait/1</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>wait(Rsrc) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
<hr>
|
||||
|
||||
<div class="navbar"><a name="#navbar_bottom"></a><table width="100%" border="0" cellspacing="0" cellpadding="2" summary="navigation bar"><tr><td><a href="overview-summary.html" target="overviewFrame">Overview</a></td><td><a href="http://www.erlang.org/"><img src="erlang.png" align="right" border="0" alt="erlang logo"></a></td></tr></table></div>
|
||||
<p><i>Generated by EDoc</i></p>
|
||||
</body>
|
||||
</html>
|
||||
67
doc/mrdb_select.html
Normal file
67
doc/mrdb_select.html
Normal file
@ -0,0 +1,67 @@
|
||||
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
|
||||
<html>
|
||||
<head>
|
||||
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
|
||||
<title>Module mrdb_select</title>
|
||||
<link rel="stylesheet" type="text/css" href="stylesheet.css" title="EDoc">
|
||||
</head>
|
||||
<body bgcolor="white">
|
||||
<div class="navbar"><a name="#navbar_top"></a><table width="100%" border="0" cellspacing="0" cellpadding="2" summary="navigation bar"><tr><td><a href="overview-summary.html" target="overviewFrame">Overview</a></td><td><a href="http://www.erlang.org/"><img src="erlang.png" align="right" border="0" alt="erlang logo"></a></td></tr></table></div>
|
||||
<hr>
|
||||
|
||||
<h1>Module mrdb_select</h1>
|
||||
<ul class="index"><li><a href="#index">Function Index</a></li><li><a href="#functions">Function Details</a></li></ul>
|
||||
|
||||
|
||||
<h2><a name="index">Function Index</a></h2>
|
||||
<table width="100%" border="1" cellspacing="0" cellpadding="2" summary="function index"><tr><td valign="top"><a href="#continuation_info-2">continuation_info/2</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#fold-5">fold/5</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#rdb_fold-5">rdb_fold/5</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#select-1">select/1</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#select-3">select/3</a></td><td></td></tr>
|
||||
<tr><td valign="top"><a href="#select-4">select/4</a></td><td></td></tr>
|
||||
</table>
|
||||
|
||||
<h2><a name="functions">Function Details</a></h2>
|
||||
|
||||
<h3 class="function"><a name="continuation_info-2">continuation_info/2</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>continuation_info(Item, C) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="fold-5">fold/5</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>fold(Ref, Fun, Acc, MS, Limit) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="rdb_fold-5">rdb_fold/5</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>rdb_fold(Ref, Fun, Acc, Prefix, Limit) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="select-1">select/1</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>select(Cont) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="select-3">select/3</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>select(Ref, MS, Limit) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
|
||||
<h3 class="function"><a name="select-4">select/4</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>select(Ref, MS, AccKeys, Limit) -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
<hr>
|
||||
|
||||
<div class="navbar"><a name="#navbar_bottom"></a><table width="100%" border="0" cellspacing="0" cellpadding="2" summary="navigation bar"><tr><td><a href="overview-summary.html" target="overviewFrame">Overview</a></td><td><a href="http://www.erlang.org/"><img src="erlang.png" align="right" border="0" alt="erlang logo"></a></td></tr></table></div>
|
||||
<p><i>Generated by EDoc</i></p>
|
||||
</body>
|
||||
</html>
|
||||
87
doc/mrdb_stats.html
Normal file
87
doc/mrdb_stats.html
Normal file
@ -0,0 +1,87 @@
|
||||
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
|
||||
<html>
|
||||
<head>
|
||||
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
|
||||
<title>Module mrdb_stats</title>
|
||||
<link rel="stylesheet" type="text/css" href="stylesheet.css" title="EDoc">
|
||||
</head>
|
||||
<body bgcolor="white">
|
||||
<div class="navbar"><a name="#navbar_top"></a><table width="100%" border="0" cellspacing="0" cellpadding="2" summary="navigation bar"><tr><td><a href="overview-summary.html" target="overviewFrame">Overview</a></td><td><a href="http://www.erlang.org/"><img src="erlang.png" align="right" border="0" alt="erlang logo"></a></td></tr></table></div>
|
||||
<hr>
|
||||
|
||||
<h1>Module mrdb_stats</h1>
|
||||
<ul class="index"><li><a href="#description">Description</a></li><li><a href="#types">Data Types</a></li><li><a href="#index">Function Index</a></li><li><a href="#functions">Function Details</a></li></ul>Statistics API for the mnesia_rocksdb plugin.
|
||||
|
||||
|
||||
<h2><a name="description">Description</a></h2><p>Statistics API for the mnesia_rocksdb plugin</p>
|
||||
|
||||
Some counters are maintained for each active alias. Currently, the following
|
||||
counters are supported:
|
||||
* inner_retries
|
||||
* outer_retries
|
||||
|
||||
<h2><a name="types">Data Types</a></h2>
|
||||
|
||||
<h3 class="typedecl"><a name="type-alias">alias()</a></h3>
|
||||
<p><tt>alias() = <a href="/home/uwiger/ae/mnesia_rocksdb/doc/mnesia_rocksdb.html#type-alias">mnesia_rocksdb:alias()</a></tt></p>
|
||||
|
||||
|
||||
<h3 class="typedecl"><a name="type-counter">counter()</a></h3>
|
||||
<p><tt>counter() = atom()</tt></p>
|
||||
|
||||
|
||||
<h3 class="typedecl"><a name="type-counters">counters()</a></h3>
|
||||
<p><tt>counters() = #{<a href="#type-counter">counter()</a> := integer()}</tt></p>
|
||||
|
||||
|
||||
<h3 class="typedecl"><a name="type-db_ref">db_ref()</a></h3>
|
||||
<p><tt>db_ref() = <a href="/home/uwiger/ae/mnesia_rocksdb/doc/mrdb.html#type-db_ref">mrdb:db_ref()</a></tt></p>
|
||||
|
||||
|
||||
<h3 class="typedecl"><a name="type-increment">increment()</a></h3>
|
||||
<p><tt>increment() = integer()</tt></p>
|
||||
|
||||
|
||||
<h2><a name="index">Function Index</a></h2>
|
||||
<table width="100%" border="1" cellspacing="0" cellpadding="2" summary="function index"><tr><td valign="top"><a href="#get-1">get/1</a></td><td>Fetches all known counters for <code>Alias</code>, in the form of a map,
|
||||
<code>#{Counter => Value}</code>.</td></tr>
|
||||
<tr><td valign="top"><a href="#get-2">get/2</a></td><td>Fetches the integer value of the known counter <code>Ctr</code> for <code>Alias</code>.</td></tr>
|
||||
<tr><td valign="top"><a href="#incr-3">incr/3</a></td><td>Increment <code>Ctr</code> counter for <code>Alias` with increment `N</code>.</td></tr>
|
||||
<tr><td valign="top"><a href="#new-0">new/0</a></td><td></td></tr>
|
||||
</table>
|
||||
|
||||
<h2><a name="functions">Function Details</a></h2>
|
||||
|
||||
<h3 class="function"><a name="get-1">get/1</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>get(Alias::<a href="#type-alias">alias()</a> | <a href="#type-db_ref">db_ref()</a>) -> <a href="#type-counters">counters()</a></tt><br></p>
|
||||
<p> </p>
|
||||
</div><p>Fetches all known counters for <code>Alias</code>, in the form of a map,
|
||||
<code>#{Counter => Value}</code>.</p>
|
||||
|
||||
<h3 class="function"><a name="get-2">get/2</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>get(Alias::<a href="#type-alias">alias()</a> | <a href="#type-db_ref">db_ref()</a>, Ctr::<a href="#type-counter">counter()</a>) -> integer()</tt><br></p>
|
||||
<p> </p>
|
||||
</div><p>Fetches the integer value of the known counter <code>Ctr</code> for <code>Alias</code>.</p>
|
||||
|
||||
<h3 class="function"><a name="incr-3">incr/3</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>incr(Alias::<a href="#type-alias">alias()</a> | <a href="#type-db_ref">db_ref()</a>, Ctr::<a href="#type-counter">counter()</a>, N::<a href="#type-increment">increment()</a>) -> ok</tt><br></p>
|
||||
<p> </p>
|
||||
</div><p><p>Increment <code>Ctr</code> counter for <code>Alias` with increment `N</code>.</p>
|
||||
|
||||
Note that the first argument may also be a <code>db_ref()</code> map,
|
||||
corresponding to <code>mrdb:get_ref({admin, Alias})</code>.</p>
|
||||
|
||||
<h3 class="function"><a name="new-0">new/0</a></h3>
|
||||
<div class="spec">
|
||||
<p><tt>new() -> any()</tt></p>
|
||||
<p> </p>
|
||||
</div>
|
||||
<hr>
|
||||
|
||||
<div class="navbar"><a name="#navbar_bottom"></a><table width="100%" border="0" cellspacing="0" cellpadding="2" summary="navigation bar"><tr><td><a href="overview-summary.html" target="overviewFrame">Overview</a></td><td><a href="http://www.erlang.org/"><img src="erlang.png" align="right" border="0" alt="erlang logo"></a></td></tr></table></div>
|
||||
<p><i>Generated by EDoc</i></p>
|
||||
</body>
|
||||
</html>
|
||||
254
doc/overview-summary.html
Normal file
254
doc/overview-summary.html
Normal file
@ -0,0 +1,254 @@
|
||||
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
|
||||
<html>
|
||||
<head>
|
||||
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
|
||||
<title>Mnesia Rocksdb - Rocksdb backend plugin for Mnesia
|
||||
</title>
|
||||
<link rel="stylesheet" type="text/css" href="stylesheet.css" title="EDoc">
|
||||
</head>
|
||||
<body bgcolor="white">
|
||||
<div class="navbar"><a name="#navbar_top"></a><table width="100%" border="0" cellspacing="0" cellpadding="2" summary="navigation bar"><tr><td><a href="overview-summary.html" target="overviewFrame">Overview</a></td><td><a href="http://www.erlang.org/"><img src="erlang.png" align="right" border="0" alt="erlang logo"></a></td></tr></table></div>
|
||||
<h1>Mnesia Rocksdb - Rocksdb backend plugin for Mnesia
|
||||
</h1>
|
||||
<p>Copyright © 2013-21 Klarna AB</p>
|
||||
<p><b>Authors:</b> Ulf Wiger (<a href="mailto:ulf@wiger.net"><tt>ulf@wiger.net</tt></a>).</p>
|
||||
|
||||
|
||||
<p>The Mnesia DBMS, part of Erlang/OTP, supports 'backend plugins', making
|
||||
it possible to utilize more capable key-value stores than the <code>dets</code>
|
||||
module (limited to 2 GB per table). Unfortunately, this support is
|
||||
undocumented. Below, some informal documentation for the plugin system
|
||||
is provided.</p>
|
||||
|
||||
<h3><a name="Table_of_Contents">Table of Contents</a></h3>
|
||||
<ol>
|
||||
<li><a href="#Usage">Usage</a></li>
|
||||
<ol>
|
||||
<li><a href="#Prerequisites">Prerequisites</a></li>
|
||||
<li><a href="#Getting_started">Getting started</a></li>
|
||||
<li><a href="#Special_features">Special features</a></li>
|
||||
<li><a href="#Customization">Customization</a></li>
|
||||
<li><a href="#Handling_of_errors_in_write_operations">Handling of errors in write operations</a></li>
|
||||
<li><a href="#Caveats">Caveats</a></li>
|
||||
</ol>
|
||||
<li><a href="#Mnesia_backend_plugins">Mnesia backend plugins</a></li>
|
||||
<ol>
|
||||
<li><a href="#Background">Background</a></li>
|
||||
<li><a href="#Design">Design</a></li>
|
||||
</ol>
|
||||
<li><a href="#Mnesia_index_plugins">Mnesia index plugins</a></li>
|
||||
<li><a href="#Rocksdb">Rocksdb</a></li>
|
||||
</ol>
|
||||
|
||||
<h3><a name="Usage">Usage</a></h3>
|
||||
|
||||
<h4><a name="Prerequisites">Prerequisites</a></h4>
|
||||
|
||||
<ul>
|
||||
<li>rocksdb (included as dependency)</li>
|
||||
<li>sext (included as dependency)</li>
|
||||
<li>Erlang/OTP 21.0 or newer (https://github.com/erlang/otp)</li>
|
||||
</ul>
|
||||
|
||||
<h4><a name="Getting_started">Getting started</a></h4>
|
||||
|
||||
<p>Call <code>mnesia_rocksdb:register()</code> immediately after
|
||||
starting mnesia.</p>
|
||||
|
||||
<p>Put <code>{rocksdb_copies, [node()]}</code> into the table definitions of
|
||||
tables you want to be in RocksDB.</p>
|
||||
|
||||
<h4><a name="Special_features">Special features</a></h4>
|
||||
|
||||
<p>RocksDB tables support efficient selects on <em>prefix keys</em>.</p>
|
||||
|
||||
<p>The backend uses the <code>sext</code> module (see
|
||||
<a href="https://github.com/uwiger/sext" target="_top"><tt>https://github.com/uwiger/sext</tt></a>) for mapping between Erlang terms and the
|
||||
binary data stored in the tables. This provides two useful properties:</p>
|
||||
|
||||
<ul>
|
||||
<li>The records are stored in the Erlang term order of their keys.</li>
|
||||
<li>A prefix of a composite key is ordered just before any key for which
|
||||
it is a prefix. For example, <code>{x, '_'}</code> is a prefix for keys <code>{x, a}</code>,
|
||||
<code>{x, b}</code> and so on.</li>
|
||||
</ul>
|
||||
|
||||
<p>This means that a prefix key identifies the start of the sequence of
|
||||
entries whose keys match the prefix. The backend uses this to optimize
|
||||
selects on prefix keys.</p>
|
||||
|
||||
<p>### Customization</p>
|
||||
|
||||
<p>RocksDB supports a number of customization options. These can be specified
|
||||
by providing a <code>{Key, Value}</code> list named <code>rocksdb_opts</code> under <code>user_properties</code>,
|
||||
for example:</p>
|
||||
|
||||
<pre>mnesia:create_table(foo, [{rocksdb_copies, [node()]},
|
||||
...
|
||||
{user_properties,
|
||||
[{rocksdb_opts, [{max_open_files, 1024}]}]
|
||||
}])</pre>
|
||||
|
||||
<p>Consult the <a href="https://github.com/facebook/rocksdb/wiki/Setup-Options-and-Basic-Tuning">RocksDB documentation</a>
|
||||
for information on configuration parameters. Also see the section below on handling write errors.</p>
|
||||
|
||||
The default configuration for tables in <code>mnesia_rocksdb</code> is:
|
||||
<pre>default_open_opts() ->
|
||||
[ {create_if_missing, true}
|
||||
, {cache_size,
|
||||
list_to_integer(get_env_default("ROCKSDB_CACHE_SIZE", "32212254"))}
|
||||
, {block_size, 1024}
|
||||
, {max_open_files, 100}
|
||||
, {write_buffer_size,
|
||||
list_to_integer(get_env_default(
|
||||
"ROCKSDB_WRITE_BUFFER_SIZE", "4194304"))}
|
||||
, {compression,
|
||||
list_to_atom(get_env_default("ROCKSDB_COMPRESSION", "true"))}
|
||||
, {use_bloomfilter, true}
|
||||
].</pre>
|
||||
|
||||
<p>It is also possible, for larger databases, to produce a tuning parameter file.
|
||||
This is experimental, and mostly copied from <code>mnesia_leveldb</code>. Consult the
|
||||
source code in <code>mnesia_rocksdb_tuning.erl</code> and <code>mnesia_rocksdb_params.erl</code>.
|
||||
Contributions are welcome.</p>
|
||||
|
||||
<h4><a name="Caveats">Caveats</a></h4>
|
||||
|
||||
<p>Avoid placing <code>bag</code> tables in RocksDB. Although they work, each write
|
||||
requires additional reads, causing substantial runtime overheads. There
|
||||
are better ways to represent and process bag data (see above about
|
||||
<em>prefix keys</em>).</p>
|
||||
|
||||
<p>The <code>mnesia:table_info(T, size)</code> call always returns zero for RocksDB
|
||||
tables. RocksDB itself does not track the number of elements in a table, and
|
||||
although it is possible to make the <code>mnesia_rocksdb</code> backend maintain a size
|
||||
counter, it incurs a high runtime overhead for writes and deletes since it
|
||||
forces them to first do a read to check the existence of the key. If you
|
||||
depend on having an up to date size count at all times, you need to maintain
|
||||
it yourself. If you only need the size occasionally, you may traverse the
|
||||
table to count the elements.</p>
|
||||
|
||||
<h3><a name="Mnesia_backend_plugins">Mnesia backend plugins</a></h3>
|
||||
|
||||
<h4><a name="Background">Background</a></h4>
|
||||
|
||||
<p>Mnesia was initially designed to be a RAM-only DBMS, and Erlang's
|
||||
<code>ets</code> tables were developed for this purpose. In order to support
|
||||
persistence, e.g. for configuration data, a disk-based version of <code>ets</code>
|
||||
(called <code>dets</code>) was created. The <code>dets</code> API mimicks the <code>ets</code> API,
|
||||
and <code>dets</code> is quite convenient and fast for (nowadays) small datasets.
|
||||
However, using a 32-bit bucket system, it is limited to 2GB of data.
|
||||
It also doesn't support ordered sets. When used in Mnesia, dets-based
|
||||
tables are called <code>disc_only_copies</code>.</p>
|
||||
|
||||
<p>To circumvent these limitations, another table type, called <code>disc_copies</code>
|
||||
was added. This is a combination of <code>ets</code> and <code>disk_log</code>, where Mnesia
|
||||
periodically snapshots the <code>ets</code> data to a log file on disk, and meanwhile
|
||||
maintains a log of updates, which can be applied at startup. These tables
|
||||
are quite performant (especially on read access), but all data is kept in
|
||||
RAM, which can become a serious limitation.</p>
|
||||
|
||||
<p>A backend plugin system was proposed by Ulf Wiger in 2016, and further
|
||||
developed with Klarna's support, to finally become included in OTP 19.
|
||||
Klarna uses a LevelDb backend, but Aeternity, in 2017, instead chose
|
||||
to implement a Rocksdb backend plugin.</p>
|
||||
|
||||
<h3><a name="Design">Design</a></h3>
|
||||
|
||||
<p>As backend plugins were added on a long-since legacy-stable Mnesia,
|
||||
they had to conform to the existing code structure. For this reason,
|
||||
the plugin callbacks hook into the already present low-level access
|
||||
API in the <code>mnesia_lib</code> module. As a consequence, backend plugins have
|
||||
the same access semantics and granularity as <code>ets</code> and <code>dets</code>. This
|
||||
isn't much of a disadvantage for key-value stores like LevelDb and RocksDB,
|
||||
but a more serious issue is that the update part of this API is called
|
||||
on <em>after</em> the point of no return. That is, Mnesia does not expect
|
||||
these updates to fail, and has no recourse if they do. As an aside,
|
||||
this could also happen if a <code>disc_only_copies</code> table exceeds the 2 GB
|
||||
limit (mnesia will not check it, and <code>dets</code> will not complain, but simply
|
||||
drop the update.)</p>
|
||||
|
||||
<h3><a name="Mnesia_index_plugins">Mnesia index plugins</a></h3>
|
||||
|
||||
<p>When adding support for backend plugins, index plugins were also added. Unfortunately, they remain undocumented.</p>
|
||||
|
||||
<p>An index plugin can be added in one of two ways:</p>
|
||||
|
||||
<ol>
|
||||
<li>When creating a schema, provide <code>{index_plugins, [{Name, Module, Function}]}</code> options.</li>
|
||||
<li>Call the function <code>mnesia_schema:add_index_plugin(Name, Module, Function)</code></li>
|
||||
</ol>
|
||||
|
||||
<p><code>Name</code> must be an atom wrapped as a 1-tuple, e.g. <code>{words}</code>.</p>
|
||||
|
||||
<p>The plugin callback is called as <code>Module:Function(Table, Pos, Obj)</code>, where <code>Pos=={words}</code> in
|
||||
our example. It returns a list of index terms.</p>
|
||||
|
||||
<p><strong>Example</strong></p>
|
||||
|
||||
<p>Given the following index plugin implementation:</p>
|
||||
|
||||
<pre>-module(words).
|
||||
-export([words_f/3]).
|
||||
|
||||
words_f(_,_,Obj) when is_tuple(Obj) ->
|
||||
words_(tuple_to_list(Obj)).
|
||||
|
||||
words_(Str) when is_binary(Str) ->
|
||||
string:lexemes(Str, [$\s, $\n, [$\r,$\n]]);
|
||||
words_(L) when is_list(L) ->
|
||||
lists:flatmap(fun words_/1, L);
|
||||
words_(_) ->
|
||||
[].</pre>
|
||||
|
||||
<p>We can register the plugin and use it in table definitions:</p>
|
||||
|
||||
<pre>Eshell V12.1.3 (abort with ^G)
|
||||
1> mnesia:start().
|
||||
ok
|
||||
2> mnesia_schema:add_index_plugin({words}, words, words_f).
|
||||
{atomic,ok}
|
||||
3> mnesia:create_table(i, [{index, [{words}]}]).
|
||||
{atomic,ok}</pre>
|
||||
|
||||
<p>Note that in this case, we had neither a backend plugin, nor even a persistent schema.
|
||||
Index plugins can be used with all table types. The registered indexing function (arity 3) must exist
|
||||
as an exported function along the node's code path.</p>
|
||||
|
||||
<p>To see what happens when we insert an object, we can turn on call trace.</p>
|
||||
|
||||
<pre>4> dbg:tracer().
|
||||
{ok,<0.108.0>}
|
||||
5> dbg:tp(words, x).
|
||||
{ok,[{matched,nonode@nohost,3},{saved,x}]}
|
||||
6> dbg:p(all,[c]).
|
||||
{ok,[{matched,nonode@nohost,60}]}
|
||||
7> mnesia:dirty_write({i,<<"one two">>, [<<"three">>, <<"four">>]}).
|
||||
(<0.84.0>) call words:words_f(i,{words},{i,<<"one two">>,[<<"three">>,<<"four">>]})
|
||||
(<0.84.0>) returned from words:words_f/3 -> [<<"one">>,<<"two">>,<<"three">>,
|
||||
<<"four">>]
|
||||
(<0.84.0>) call words:words_f(i,{words},{i,<<"one two">>,[<<"three">>,<<"four">>]})
|
||||
(<0.84.0>) returned from words:words_f/3 -> [<<"one">>,<<"two">>,<<"three">>,
|
||||
<<"four">>]
|
||||
ok
|
||||
8> dbg:ctp('_'), dbg:stop().
|
||||
ok
|
||||
9> mnesia:dirty_index_read(i, <<"one">>, {words}).
|
||||
[{i,<<"one two">>,[<<"three">>,<<"four">>]}]</pre>
|
||||
|
||||
<p>(The fact that the indexing function is called twice, seems like a performance bug.)</p>
|
||||
|
||||
<p>We can observe that the indexing callback is able to operate on the whole object.
|
||||
It needs to be side-effect free and efficient, since it will be called at least once for each update
|
||||
(if an old object exists in the table, the indexing function will be called on it too, before it is
|
||||
replaced by the new object.)</p>
|
||||
|
||||
<h3><a name="Rocksdb">Rocksdb</a></h3>
|
||||
|
||||
<h3><a name="Usage">Usage</a></h3>
|
||||
|
||||
<hr>
|
||||
<div class="navbar"><a name="#navbar_bottom"></a><table width="100%" border="0" cellspacing="0" cellpadding="2" summary="navigation bar"><tr><td><a href="overview-summary.html" target="overviewFrame">Overview</a></td><td><a href="http://www.erlang.org/"><img src="erlang.png" align="right" border="0" alt="erlang logo"></a></td></tr></table></div>
|
||||
<p><i>Generated by EDoc</i></p>
|
||||
</body>
|
||||
</html>
|
||||
@ -407,12 +407,14 @@ try_load_admin_db(Alias, AliasOpts, #st{ backends = Bs
|
||||
%% We need to store the persistent ref explicitly here,
|
||||
%% since mnesia knows nothing of our admin table.
|
||||
AdminTab = {admin, Alias},
|
||||
Stats = mrdb_stats:new(),
|
||||
CfI = update_cf_info(AdminTab, #{ status => open
|
||||
, name => AdminTab
|
||||
, vsn => ?VSN
|
||||
, encoding => {sext,{value,term}}
|
||||
, attr_pos => #{key => 1,
|
||||
value => 2}
|
||||
, stats => Stats
|
||||
, mountpoint => MP
|
||||
, properties =>
|
||||
#{ attributes => [key, val]
|
||||
|
||||
101
src/mrdb.erl
101
src/mrdb.erl
@ -117,7 +117,9 @@
|
||||
| index()
|
||||
| retainer().
|
||||
|
||||
-type retries() :: non_neg_integer().
|
||||
-type inner() :: non_neg_integer().
|
||||
-type outer() :: non_neg_integer().
|
||||
-type retries() :: outer() | {inner(), outer()}.
|
||||
|
||||
%% activity type 'ets' makes no sense in this context
|
||||
-type mnesia_activity_type() :: transaction
|
||||
@ -143,7 +145,7 @@
|
||||
|
||||
-type tx_activity() :: #{ type := 'tx'
|
||||
, handle := tx_handle()
|
||||
, attempt := non_neg_integer() }.
|
||||
, attempt := 'undefined' | retries() }.
|
||||
-type batch_activity() :: #{ type := 'batch'
|
||||
, handle := batch_handle() }.
|
||||
-type activity() :: tx_activity() | batch_activity().
|
||||
@ -256,6 +258,14 @@ release_snapshot(SHandle) ->
|
||||
%% The re-run transaction may still fail, if new transactions, or non-transaction writes interfere with
|
||||
%% the commit set. It will then be re-run again, until the retry count is exhausted.
|
||||
%%
|
||||
%% For finer-grained retries, it's possible to set `retries => {Inner, Outer}'. Setting the retries to a
|
||||
%% single number, `Retries', is analogous to `{0, Retries}`. Each outer retry requests a 'mutex lock' by
|
||||
%% waiting in a FIFO queue. Once it receives the lock, it will try the activity once + as many retries
|
||||
%% as specified by `Inner'. If these fail, the activity again goes to the FIFO queue (ending up last
|
||||
%% in line) if there are outer retries remaining. When all retries are exhaused, the activity aborts
|
||||
%% with `retry_limit'. Note that transactions, being optimistic, do not request a lock on the first
|
||||
%% attempt, but only on outer retries (the first retry is always an outer retry).
|
||||
%%
|
||||
%% Valid `TxOpts' are `#{no_snapshot => boolean(), retries => retries()}'.
|
||||
%%
|
||||
%% To simplify code adaptation, `tx | transaction | sync_transaction' are synonyms, and
|
||||
@ -277,32 +287,66 @@ activity(Type, Alias, F) ->
|
||||
, alias => Alias
|
||||
, db_ref => DbRef }
|
||||
end,
|
||||
do_activity(F, Alias, Ctxt, false).
|
||||
do_activity(F, Alias, Ctxt).
|
||||
|
||||
do_activity(F, Alias, Ctxt, WithLock) ->
|
||||
try run_f(F, Ctxt, WithLock, Alias) of
|
||||
do_activity(F, Alias, Ctxt) ->
|
||||
try try_f(F, Ctxt)
|
||||
catch
|
||||
throw:{?MODULE, busy} ->
|
||||
retry_activity(F, Alias, Ctxt)
|
||||
end.
|
||||
|
||||
try_f(F, Ctxt) ->
|
||||
try run_f(F, Ctxt) of
|
||||
Res ->
|
||||
try commit_and_pop(Res)
|
||||
catch
|
||||
throw:{?MODULE, busy} ->
|
||||
do_activity(F, Alias, Ctxt, true)
|
||||
end
|
||||
commit_and_pop(Res)
|
||||
catch
|
||||
Cat:Err ->
|
||||
abort_and_pop(Cat, Err)
|
||||
end.
|
||||
|
||||
-spec run_f(_, #{'activity':=#{'handle':=_, 'type':='batch' | 'tx', 'attempt'=>1, 'no_snapshot'=>boolean(), 'retries'=>non_neg_integer(), _=>_}, 'alias':=_, 'db_ref':=_, 'no_snapshot'=>boolean(), 'retries'=>non_neg_integer(), _=>_}, boolean(), _) -> any().
|
||||
run_f(F, Ctxt, false, _) ->
|
||||
run_f(F, Ctxt) ->
|
||||
push_ctxt(Ctxt),
|
||||
F();
|
||||
run_f(F, Ctxt, true, Alias) ->
|
||||
push_ctxt(incr_attempt(Ctxt)),
|
||||
mrdb_mutex:do(Alias, F).
|
||||
F().
|
||||
|
||||
incr_attempt(#{ activity := #{type := tx, attempt := A} = Act, db_ref := DbRef } = C) ->
|
||||
incr_attempt(0, {_,O}) when O > 0 ->
|
||||
{outer, {0,1}};
|
||||
incr_attempt({I,O}, {Ri,Ro}) when is_integer(I), is_integer(O),
|
||||
is_integer(Ri), is_integer(Ro) ->
|
||||
if I < Ri -> {inner, {I+1, O}};
|
||||
O < Ro -> {outer, {0, O+1}};
|
||||
true ->
|
||||
error
|
||||
end;
|
||||
incr_attempt(_, _) ->
|
||||
error.
|
||||
|
||||
retry_activity(F, Alias, #{activity := #{ type := Type
|
||||
, attempt := A
|
||||
, retries := R} = Act} = Ctxt) ->
|
||||
case incr_attempt(A, R) of
|
||||
{RetryCtxt, A1} ->
|
||||
Act1 = Act#{attempt := A1},
|
||||
Ctxt1 = Ctxt#{activity := Act1},
|
||||
try retry_activity_(RetryCtxt, F, Alias, restart_ctxt(Ctxt1))
|
||||
catch
|
||||
throw:{?MODULE, busy} ->
|
||||
retry_activity(F, Alias, Ctxt1)
|
||||
end;
|
||||
error ->
|
||||
return_abort(Type, error, retry_limit)
|
||||
end.
|
||||
|
||||
retry_activity_(inner, F, Alias, Ctxt) ->
|
||||
mrdb_stats:incr(Alias, inner_retries, 1),
|
||||
try_f(F, Ctxt);
|
||||
retry_activity_(outer, F, Alias, Ctxt) ->
|
||||
mrdb_stats:incr(Alias, outer_retries, 1),
|
||||
mrdb_mutex:do(Alias, fun() -> try_f(F, Ctxt) end).
|
||||
|
||||
restart_ctxt(#{ activity := #{type := tx} = Act, db_ref := DbRef } = C) ->
|
||||
{ok, TxH} = rdb_transaction(DbRef, []),
|
||||
Act1 = Act#{attempt := A+1, handle := TxH},
|
||||
Act1 = Act#{handle := TxH},
|
||||
C1 = C#{ activity := Act1 },
|
||||
case maps:is_key(snapshot, C) of
|
||||
true ->
|
||||
@ -375,10 +419,14 @@ check_tx_opts(Opts) ->
|
||||
end.
|
||||
|
||||
check_retries(#{retries := Retries} = Opts) ->
|
||||
if is_integer(Retries), Retries >= 0 ->
|
||||
Opts;
|
||||
true ->
|
||||
error({invalid_tx_option, {retries, Retries}})
|
||||
case Retries of
|
||||
_ when is_integer(Retries), Retries >= 0 ->
|
||||
Opts#{retries := {0, Retries}};
|
||||
{Inner, Outer} when is_integer(Inner), is_integer(Outer),
|
||||
Inner >= 0, Outer >= 0 ->
|
||||
Opts;
|
||||
_ ->
|
||||
error({invalid_tx_option, {retries, Retries}})
|
||||
end.
|
||||
|
||||
check_nosnap(#{no_snapshot := NoSnap} = Opts) ->
|
||||
@ -393,7 +441,7 @@ create_tx(Opts, DbRef) ->
|
||||
{ok, TxH} = rdb_transaction(DbRef, []),
|
||||
Opts#{activity => maps:merge(Opts, #{ type => tx
|
||||
, handle => TxH
|
||||
, attempt => 1})}.
|
||||
, attempt => 0 })}.
|
||||
|
||||
maybe_snapshot(#{no_snapshot := NoSnap} = Opts, DbRef) ->
|
||||
case NoSnap of
|
||||
@ -413,8 +461,7 @@ commit_and_pop(Res) ->
|
||||
Res;
|
||||
{error, {error, "Resource busy" ++ _ = Busy}} ->
|
||||
case A of
|
||||
#{retries := Retries, attempt := Att}
|
||||
when Att =< Retries ->
|
||||
#{retries := {I,O}} when I > 0; O > 0 ->
|
||||
throw({?MODULE, busy});
|
||||
_ ->
|
||||
error({error, Busy})
|
||||
@ -530,7 +577,7 @@ new_tx(#{activity := _}, _) ->
|
||||
new_tx(Tab, Opts) ->
|
||||
#{db_ref := DbRef} = R = ensure_ref(Tab),
|
||||
{ok, TxH} = rdb_transaction(DbRef, write_opts(R, Opts)),
|
||||
R#{activity => #{type => tx, handle => TxH, attempt => 1}}.
|
||||
R#{activity => #{type => tx, handle => TxH, attempt => 0}}.
|
||||
|
||||
-spec tx_ref(ref_or_tab() | db_ref() | db_ref(), tx_handle()) -> db_ref().
|
||||
tx_ref(Tab, TxH) ->
|
||||
@ -540,7 +587,7 @@ tx_ref(Tab, TxH) ->
|
||||
#{activity := #{type := tx, handle := OtherTxH}} ->
|
||||
error({tx_handle_conflict, OtherTxH});
|
||||
R ->
|
||||
R#{activity => #{type => tx, handle => TxH, attempt => 1}}
|
||||
R#{activity => #{type => tx, handle => TxH, attempt => 0}}
|
||||
end.
|
||||
|
||||
-spec tx_commit(tx_handle() | db_ref()) -> ok.
|
||||
|
||||
74
src/mrdb_stats.erl
Normal file
74
src/mrdb_stats.erl
Normal file
@ -0,0 +1,74 @@
|
||||
%% -*- mode: erlang; erlang-indent-level: 4; indent-tabs-mode: nil -*-
|
||||
%% @doc Statistics API for the mnesia_rocksdb plugin
|
||||
%%
|
||||
%% Some counters are maintained for each active alias. Currently, the following
|
||||
%% counters are supported:
|
||||
%% * inner_retries
|
||||
%% * outer_retries
|
||||
%%
|
||||
-module(mrdb_stats).
|
||||
|
||||
-export([new/0]).
|
||||
|
||||
-export([incr/3,
|
||||
get/1,
|
||||
get/2]).
|
||||
|
||||
-type alias() :: mnesia_rocksdb:alias().
|
||||
-type db_ref() :: mrdb:db_ref().
|
||||
-type counter() :: atom().
|
||||
-type increment() :: integer().
|
||||
|
||||
-type counters() :: #{ counter() := integer() }.
|
||||
|
||||
new() ->
|
||||
#{ ref => counters:new(map_size(ctr_meta()), [write_concurrency])
|
||||
, meta => ctr_meta()}.
|
||||
|
||||
ctr_meta() ->
|
||||
#{ inner_retries => 1
|
||||
, outer_retries => 2 }.
|
||||
|
||||
-spec incr(alias() | db_ref(), counter(), increment()) -> ok.
|
||||
%% @doc Increment `Ctr' counter for `Alias` with increment `N'.
|
||||
%%
|
||||
%% Note that the first argument may also be a `db_ref()' map,
|
||||
%% corresponding to `mrdb:get_ref({admin, Alias})'.
|
||||
%% @end
|
||||
incr(Alias, Ctr, N) when is_atom(Alias) ->
|
||||
#{stats := #{ref := Ref, meta := Meta}} = mrdb:get_ref({admin, Alias}),
|
||||
incr_(Ref, Meta, Ctr, N);
|
||||
incr(#{stats := #{ref := Ref, meta := Meta}}, Ctr, N) ->
|
||||
incr_(Ref, Meta, Ctr, N).
|
||||
|
||||
-spec get(alias() | db_ref(), counter()) -> integer().
|
||||
%% @doc Fetches the integer value of the known counter `Ctr' for `Alias'.
|
||||
%% @end
|
||||
get(Alias, Ctr) when is_atom(Alias) ->
|
||||
#{stats := #{ref := Ref, meta := Meta}} = mrdb:get_ref({admin, Alias}),
|
||||
get_(Ref, Meta, Ctr);
|
||||
get(#{stats := #{ref := Ref, meta := Meta}}, Ctr) ->
|
||||
get_(Ref, Meta, Ctr).
|
||||
|
||||
-spec get(alias() | db_ref()) -> counters().
|
||||
%% @doc Fetches all known counters for `Alias', in the form of a map,
|
||||
%% `#{Counter => Value}'.
|
||||
%% @end
|
||||
get(Alias) when is_atom(Alias) ->
|
||||
get_(mrdb:get_ref({admin, Alias}));
|
||||
get(Ref) when is_map(Ref) ->
|
||||
get_(Ref).
|
||||
|
||||
get_(#{stats := #{ref := Ref, meta := Meta}}) ->
|
||||
lists:foldl(
|
||||
fun({K, P}, M) ->
|
||||
M#{K := counters:get(Ref, P)}
|
||||
end, Meta, maps:to_list(Meta)).
|
||||
|
||||
get_(Ref, Meta, Attr) ->
|
||||
Ix = maps:get(Attr, Meta),
|
||||
counters:get(Ref, Ix).
|
||||
|
||||
incr_(Ref, Meta, Attr, N) ->
|
||||
Ix = maps:get(Attr, Meta),
|
||||
counters:add(Ref, Ix, N).
|
||||
@ -24,6 +24,7 @@
|
||||
, mrdb_abort/1
|
||||
, mrdb_two_procs/1
|
||||
, mrdb_two_procs_tx_restart/1
|
||||
, mrdb_two_procs_tx_inner_restart/1
|
||||
, mrdb_two_procs_snap/1
|
||||
, mrdb_three_procs/1
|
||||
]).
|
||||
@ -53,6 +54,7 @@ groups() ->
|
||||
, mrdb_abort
|
||||
, mrdb_two_procs
|
||||
, mrdb_two_procs_tx_restart
|
||||
, mrdb_two_procs_tx_inner_restart
|
||||
, mrdb_two_procs_snap
|
||||
, mrdb_three_procs ]}
|
||||
].
|
||||
@ -287,10 +289,17 @@ mrdb_abort(Config) ->
|
||||
mrdb_two_procs(Config) ->
|
||||
tr_ct:with_trace(fun mrdb_two_procs_/1, Config,
|
||||
tr_flags(
|
||||
{self(), [call, sos, p]},
|
||||
{self(), [call, sos, p, 'receive']},
|
||||
tr_patterns(
|
||||
mrdb, [ {mrdb, insert, 2, x}
|
||||
, {mrdb, read, 2, x}
|
||||
, {mrdb, retry_activity, 3, x}
|
||||
, {mrdb, try_f, 2, x}
|
||||
, {mrdb, incr_attempt, 2, x}
|
||||
, {mrdb_mutex, do, 2, x}
|
||||
, {mrdb_mutex_serializer, do, 2, x}
|
||||
, {?MODULE, wait_for_other, 2, x}
|
||||
, {?MODULE, go_ahead_other, 1, x}
|
||||
, {mrdb, activity, x}], tr_opts()))).
|
||||
|
||||
mrdb_two_procs_(Config) ->
|
||||
@ -314,11 +323,16 @@ mrdb_two_procs_(Config) ->
|
||||
Pre = mrdb:read(R, a),
|
||||
go_ahead_other(POther),
|
||||
await_other_down(POther, MRef, ?LINE),
|
||||
%% The test proc is still inside the transaction, and POther
|
||||
%% has terminated/committed. If we now read 'a', we should see
|
||||
%% the value that POther wrote (no isolation).
|
||||
[{R, a, 17}] = mrdb:read(R, a),
|
||||
ok = mrdb:insert(R, {R, a, 18})
|
||||
end,
|
||||
go_ahead_other(1, POther),
|
||||
go_ahead_other(0, POther),
|
||||
Do0 = get_dict(),
|
||||
%% Our transaction should fail due to the resource conflict, and because
|
||||
%% we're not using retries.
|
||||
try mrdb:activity({tx, #{no_snapshot => true,
|
||||
retries => 0}}, rdb, F1) of
|
||||
ok -> error(unexpected)
|
||||
@ -339,6 +353,7 @@ mrdb_two_procs_tx_restart_(Config) ->
|
||||
R = ?FUNCTION_NAME,
|
||||
Parent = self(),
|
||||
Created = create_tabs([{R, []}], Config),
|
||||
check_stats(rdb),
|
||||
mrdb:insert(R, {R, a, 1}),
|
||||
Pre = mrdb:read(R, a),
|
||||
F0 = fun() ->
|
||||
@ -354,7 +369,7 @@ mrdb_two_procs_tx_restart_(Config) ->
|
||||
OtherWrite = [{R, a, 17}],
|
||||
Att = get_attempt(),
|
||||
Expected = case Att of
|
||||
1 -> Pre;
|
||||
0 -> Pre;
|
||||
_ -> OtherWrite
|
||||
end,
|
||||
Expected = mrdb:read(R, a),
|
||||
@ -363,14 +378,88 @@ mrdb_two_procs_tx_restart_(Config) ->
|
||||
OtherWrite = mrdb:read(R, a),
|
||||
ok = mrdb:insert(R, {R, a, 18})
|
||||
end,
|
||||
go_ahead_other(1, POther),
|
||||
go_ahead_other(0, POther),
|
||||
Do0 = get_dict(),
|
||||
mrdb:activity({tx, #{no_snapshot => true}}, rdb, F1),
|
||||
dictionary_unchanged(Do0),
|
||||
check_stats(rdb),
|
||||
[{R, a, 18}] = mrdb:read(R, a),
|
||||
delete_tabs(Created),
|
||||
ok.
|
||||
|
||||
mrdb_two_procs_tx_inner_restart(Config) ->
|
||||
tr_ct:with_trace(fun mrdb_two_procs_tx_inner_restart_/1, Config,
|
||||
dbg_tr_opts()).
|
||||
|
||||
mrdb_two_procs_tx_inner_restart_(Config) ->
|
||||
R = ?FUNCTION_NAME,
|
||||
Parent = self(),
|
||||
Created = create_tabs([{R, []}], Config),
|
||||
mrdb:insert(R, {R, a, 1}),
|
||||
mrdb:insert(R, {R, b, 1}),
|
||||
PreA = mrdb:read(R, a),
|
||||
PreB = mrdb:read(R, b),
|
||||
#{inner_retries := Ri0, outer_retries := Ro0} = check_stats(rdb),
|
||||
F0 = fun() ->
|
||||
wait_for_other(Parent, ?LINE),
|
||||
ok = mrdb:insert(R, {R, a, 17}),
|
||||
wait_for_other(Parent, ?LINE)
|
||||
end,
|
||||
F1 = fun() ->
|
||||
wait_for_other(Parent, ?LINE),
|
||||
ok = mrdb:insert(R, {R, b, 147}),
|
||||
wait_for_other(Parent, ?LINE)
|
||||
end,
|
||||
|
||||
Spawn = fun(F) ->
|
||||
Res = spawn_opt(
|
||||
fun() ->
|
||||
ok = mrdb:activity(tx, rdb, F)
|
||||
end, [monitor]),
|
||||
Res
|
||||
end,
|
||||
{P1, MRef1} = Spawn(F0),
|
||||
{P2, MRef2} = Spawn(F1),
|
||||
F2 = fun() ->
|
||||
PostA = [{R, a, 17}], % once F0 (P1) has committed
|
||||
PostB = [{R, b, 147}], % once F1 (P2) has committed
|
||||
ARes = mrdb:read(R, a), % We need to read first to establish a pre-image
|
||||
BRes = mrdb:read(R, b),
|
||||
Att = get_attempt(),
|
||||
ct:log("Att = ~p", [Att]),
|
||||
case Att of
|
||||
0 -> % This is the first run (no retry yet)
|
||||
ARes = PreA,
|
||||
BRes = PreB,
|
||||
go_ahead_other(0, P1), % Having our pre-image, now let P1 write
|
||||
go_ahead_other(0, P1), % Let P1 commit, then await DOWN (normal)
|
||||
await_other_down(P1, MRef1, ?LINE),
|
||||
PostA = mrdb:read(R, a); % now, P1's write should leak through here
|
||||
{0, 1} -> % This is the first (outer) retry
|
||||
go_ahead_other(0, P2), % Let P2 write
|
||||
go_ahead_other(0, P2), % Let P2 commit, then await DOWN (normal)
|
||||
await_other_down(P2, MRef2, ?LINE),
|
||||
PostA = mrdb:read(R, a), % now we should see writes from both P1
|
||||
PostB = mrdb:read(R, b); % ... and P2
|
||||
{1, 1} ->
|
||||
PostA = mrdb:read(R, a),
|
||||
PostB = mrdb:read(R, b),
|
||||
ok
|
||||
end,
|
||||
mrdb:insert(R, {R, a, 18}),
|
||||
mrdb:insert(R, {R, b, 18})
|
||||
end,
|
||||
Do0 = get_dict(),
|
||||
mrdb:activity({tx, #{no_snapshot => true, retries => {1,1}}}, rdb, F2),
|
||||
check_stats(rdb),
|
||||
dictionary_unchanged(Do0),
|
||||
[{R, a, 18}] = mrdb:read(R, a),
|
||||
[{R, b, 18}] = mrdb:read(R, b),
|
||||
#{inner_retries := Ri1, outer_retries := Ro1} = check_stats(rdb),
|
||||
{restarts, {1, 1}} = {restarts, {Ri1 - Ri0, Ro1 - Ro0}},
|
||||
delete_tabs(Created),
|
||||
ok.
|
||||
|
||||
|
||||
%
|
||||
%% For testing purposes, we use side-effects inside the transactions
|
||||
@ -383,7 +472,7 @@ mrdb_two_procs_tx_restart_(Config) ->
|
||||
%% attempt, and ignore the sync ops on retries.
|
||||
%%
|
||||
-define(IF_FIRST(N, Expr),
|
||||
if N == 1 ->
|
||||
if N == 0 ->
|
||||
Expr;
|
||||
true ->
|
||||
ok
|
||||
@ -413,8 +502,8 @@ mrdb_two_procs_snap(Config) ->
|
||||
go_ahead_other(Att, POther),
|
||||
ARes = mrdb:read(R, a),
|
||||
ARes = case Att of
|
||||
1 -> Pre;
|
||||
2 -> [{R, a, 17}]
|
||||
0 -> Pre;
|
||||
_ -> [{R, a, 17}]
|
||||
end,
|
||||
await_other_down(POther, MRef, ?LINE),
|
||||
PreB = mrdb:read(R, b),
|
||||
@ -434,7 +523,7 @@ mrdb_two_procs_snap(Config) ->
|
||||
%% We make sure that P2 commits before finishing the other two, and P3 and the
|
||||
%% main thread sync, so as to maximize the contention for the retry lock.
|
||||
mrdb_three_procs(Config) ->
|
||||
tr_ct:with_trace(fun mrdb_three_procs_/1, Config, light_tr_opts()).
|
||||
tr_ct:with_trace(fun mrdb_three_procs_/1, Config, dbg_tr_opts()).
|
||||
|
||||
mrdb_three_procs_(Config) ->
|
||||
R = ?FUNCTION_NAME,
|
||||
@ -452,7 +541,7 @@ mrdb_three_procs_(Config) ->
|
||||
spawn_opt(fun() ->
|
||||
D0 = get_dict(),
|
||||
do_when_p_allows(
|
||||
1, Parent, ?LINE,
|
||||
0, Parent, ?LINE,
|
||||
fun() ->
|
||||
ok = mrdb:activity({tx,#{retries => 0}}, rdb, F1)
|
||||
end),
|
||||
@ -488,8 +577,8 @@ mrdb_three_procs_(Config) ->
|
||||
fun() ->
|
||||
Att = get_attempt(),
|
||||
ARes = case Att of
|
||||
1 -> [A0];
|
||||
2 -> [A1]
|
||||
0 -> [A0];
|
||||
_ -> [A1]
|
||||
end,
|
||||
%% First, ensure that P2 tx is running
|
||||
go_ahead_other(Att, P2),
|
||||
@ -519,6 +608,7 @@ tr_opts() ->
|
||||
, {?MODULE, await_other_down, 3, x}
|
||||
, {?MODULE, do_when_p_allows, 4, x}
|
||||
, {?MODULE, allow_p, 3, x}
|
||||
, {?MODULE, check_stats, 1, x}
|
||||
]}.
|
||||
|
||||
light_tr_opts() ->
|
||||
@ -529,6 +619,22 @@ light_tr_opts() ->
|
||||
, {mrdb, read, 2, x}
|
||||
, {mrdb, activity, x} ], tr_opts())).
|
||||
|
||||
dbg_tr_opts() ->
|
||||
tr_flags(
|
||||
{self(), [call, sos, p, 'receive']},
|
||||
tr_patterns(
|
||||
mrdb, [ {mrdb, insert, 2, x}
|
||||
, {mrdb, read, 2, x}
|
||||
, {mrdb, retry_activity, 3, x}
|
||||
, {mrdb, try_f, 2, x}
|
||||
, {mrdb, incr_attempt, 2, x}
|
||||
, {mrdb, current_context, 0, x}
|
||||
, {mrdb_mutex, do, 2, x}
|
||||
, {mrdb_mutex_serializer, do, 2, x}
|
||||
, {?MODULE, wait_for_other, 2, x}
|
||||
, {?MODULE, go_ahead_other, 1, x}
|
||||
, {mrdb, activity, x} ], tr_opts())).
|
||||
|
||||
tr_patterns(Mod, Ps, #{patterns := Pats} = Opts) ->
|
||||
Pats1 = [P || P <- Pats, element(1,P) =/= Mod],
|
||||
Opts#{patterns => Ps ++ Pats1}.
|
||||
@ -542,12 +648,13 @@ wait_for_other(Parent, L) ->
|
||||
wait_for_other(Att, Parent, L) ->
|
||||
wait_for_other(Att, Parent, 1000, L).
|
||||
|
||||
wait_for_other(1, Parent, Timeout, L) ->
|
||||
wait_for_other(0, Parent, Timeout, L) ->
|
||||
MRef = monitor(process, Parent),
|
||||
Parent ! {self(), ready},
|
||||
receive
|
||||
{Parent, cont} ->
|
||||
demonitor(MRef),
|
||||
Parent ! {self(), cont_ack},
|
||||
ok;
|
||||
{'DOWN', MRef, _, _, Reason} ->
|
||||
ct:log("Parent died, Reason = ~p", [Reason]),
|
||||
@ -586,7 +693,13 @@ go_ahead_other(Att, POther, Timeout) ->
|
||||
go_ahead_other_(POther, Timeout) ->
|
||||
receive
|
||||
{POther, ready} ->
|
||||
POther ! {self(), cont}
|
||||
POther ! {self(), cont},
|
||||
receive
|
||||
{POther, cont_ack} ->
|
||||
ok
|
||||
after Timeout ->
|
||||
error(cont_ack_timeout)
|
||||
end
|
||||
after Timeout ->
|
||||
error(go_ahead_timeout)
|
||||
end.
|
||||
@ -645,3 +758,8 @@ dictionary_unchanged(Old) ->
|
||||
, added := [] } = #{ deleted => Old -- New
|
||||
, added => New -- Old },
|
||||
ok.
|
||||
|
||||
check_stats(Alias) ->
|
||||
Stats = mrdb_stats:get(Alias),
|
||||
ct:log("Stats: ~p", [Stats]),
|
||||
Stats.
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user