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Fix silly nodes report bug

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This commit is contained in:
Craig Everett 2025-10-29 15:35:05 +09:00
parent 7252ecd40b
commit c5349f5736
4 changed files with 1403 additions and 38 deletions
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76
src/hz.erl
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@ -9,7 +9,7 @@
%%%
%%% The get/set admin functions are for setting or checking things like the Gajumaru
%%% "network ID" and list of addresses of nodes you want to use for answering
%%% queries to the blockchain.
%%% queries to the blockchain. Get functions are arity 0, and set functions are arity 1.
%%%
%%% The JSON query interface functions are the blockchain query functions themselves
%%% which are translated to network queries and return Erlang messages as responses.
@ -18,8 +18,8 @@
%%% a desired call to a smart contract on the chain to call data serialized in a form
%%% that a Gajumaru compatible wallet or library can sign and submit to a Gajumaru node.
%%%
%%% This module does not implement the OTP application behavior.
%%% helper functions.
%%% NOTE:
%%% This module does not implement the OTP application behavior. Refer to hakuzaru.erl.
%%% @end
-module(hz).
@ -225,7 +225,7 @@
NetworkID :: string(),
Reason :: term().
%% @doc
%% Returns the network ID or the atom `none' if it is unset.
%% Returns the network ID or the atom `none' if unavailable.
%% Checking this is not normally necessary, but if network ID assignment is dynamic
%% in your system it may be necessary to call this before attempting to form
%% call data or perform other actions on chain that require a signature.
@ -241,7 +241,9 @@ network_id() ->
%% @doc
%% Returns the list of currently assigned nodes.
%% The normal reason to call this is in preparation for altering the nodes list or
%% checking the current list in debugging.
%% checking the current list in debugging. Note that the first node in the list is
%% the "sticky" node: the one that will be used for submitting transactions and
%% querying `next_nonce'.
chain_nodes() ->
hz_man:chain_nodes().
@ -251,19 +253,26 @@ chain_nodes() ->
when List :: [chain_node()],
Reason :: {invalid, [term()]}.
%% @doc
%% Sets the nodes that are intended to be used as your interface to the peer
%% network. The common situation is that your project runs a non-mining node as
%% part of your backend infrastructure. Typically one or two nodes is plenty, but
%% this may need to expand depending on how much query load your application generates.
%% The Hakuzaru manager will load balance by round-robin distribution.
%% Sets the chain nodes that will be queried whenever you communicate with the chain.
%%
%% NOTE: When load balancing in this way be aware that there can be race conditions
%% among the backend nodes with regard to a single account's current nonce when performing
%% contract calls in quick succession. Round robin distribution is extremely useful when
%% performing rapid lookups to the chain, but does not work well when submitting many
%% transactions to the chain from a single user in a short period of time. A future version
%% of this library will allow the caller to designate a single node as "sticky" to be used
%% exclusively in the case of nonce reads and TX submissions.
%% The common situation is that a project runs a non-mining node as part of the backend
%% infrastructure. Typically one or two nodes is plenty, but this may need to expand
%% depending on how much query load your application generates.
%%
%% There are two situations: one node, or multiple nodes.
%%
%% Single node:
%% In the case of a single node, everything passes through that one node. Duh.
%%
%% Multiple nodes:
%% In the case of multiple nodes a distinction is made between the node to which
%% transactions that update the chain state are made and to which `next_nonce' queries
%% are made, and nodes that are used for read-only queries. The node to which stateful
%% transactions are submitted is called the "sticky node". This is the first node
%% (head position) in the list of nodes submitted to the chain when `chain_nodes/1'
%% is called. If using multiple nodes but the sticky node should also be used for
%% read-only queries, submit the sticky node at the head of the list and again in
%% the tail.
chain_nodes(List) when is_list(List) ->
hz_man:chain_nodes(List).
@ -271,7 +280,16 @@ chain_nodes(List) when is_list(List) ->
-spec tls() -> boolean().
%% @doc
%% Check whether TLS is in use.
%% Check whether TLS is in use. The typical situation is to not use TLS as nodes that
%% serve as part of the backend of an application are typically run in the same
%% backend network as the application service. When accessing chain nodes over the WAN
%% however, TLS is strongly recommended to avoid a MITM attack.
%%
%% In this version of Hakuzaru TLS is either on or off for all nodes, making a mixed
%% infrastructure complicated to support without two Hakuzaru instances. This will
%% likely become a per-node setting in the future.
%%
%% TLS defaults to `false'.
tls() ->
hz_man:tls().
@ -281,6 +299,8 @@ tls() ->
%% @doc
%% Set TLS true or false. That's what a boolean is, by the way, `true' or `false'.
%% This is a condescending comment. That means I am talking down to you.
%%
%% TLS defaults to `false'.
tls(Boolean) ->
hz_man:tls(Boolean).
@ -291,6 +311,8 @@ tls(Boolean) ->
when Timeout :: pos_integer() | infinity.
%% @doc
%% Returns the current request timeout setting in milliseconds.
%% The default timeout is 5,000ms.
%% The max timeout is 120,000ms.
timeout() ->
hz_man:timeout().
@ -300,6 +322,8 @@ timeout() ->
when MS :: pos_integer() | infinity.
%% @doc
%% Sets the request timeout in milliseconds.
%% The default timeout is 5,000ms.
%% The max timeout is 120,000ms.
timeout(MS) ->
hz_man:timeout(MS).
@ -576,18 +600,18 @@ acc_pending_txs(AccountID) ->
%% Retrieve the next nonce for the given account
next_nonce(AccountID) ->
% case request(["/v3/accounts/", AccountID, "/next-nonce"]) of
% {ok, #{"next_nonce" := Nonce}} -> {ok, Nonce};
% {ok, #{"reason" := "Account not found"}} -> {ok, 1};
% {ok, #{"reason" := Reason}} -> {error, Reason};
% Error -> Error
% end.
case request_sticky(["/v3/accounts/", AccountID]) of
{ok, #{"nonce" := Nonce}} -> {ok, Nonce + 1};
case request_sticky(["/v3/accounts/", AccountID, "/next-nonce"]) of
{ok, #{"next_nonce" := Nonce}} -> {ok, Nonce};
{ok, #{"reason" := "Account not found"}} -> {ok, 1};
{ok, #{"reason" := Reason}} -> {error, Reason};
Error -> Error
end.
% case request_sticky(["/v3/accounts/", AccountID]) of
% {ok, #{"nonce" := Nonce}} -> {ok, Nonce + 1};
% {ok, #{"reason" := "Account not found"}} -> {ok, 1};
% {ok, #{"reason" := Reason}} -> {error, Reason};
% Error -> Error
% end.
-spec dry_run(TX) -> {ok, Result} | {error, Reason}

6
src/hz_fetcher.erl
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@ -4,7 +4,7 @@
-copyright("Craig Everett <ceverett@tsuriai.jp>").
-license("MIT").
-export([connect/4, slowly_connect/4]).
-export([connect/4, connect_slowly/4]).
connect(Node = {Host, Port}, Request, From, Timeout) ->
@ -206,7 +206,7 @@ read_hval(_, Received, _, _, _) ->
{error, headers}.
slowly_connect(Node, {get, Path}, From, Timeout) ->
connect_slowly(Node, {get, Path}, From, Timeout) ->
HttpOptions = [{connect_timeout, 3000}, {timeout, Timeout}],
URL = lists:flatten(url(Node, Path)),
Request = {URL, []},
@ -217,7 +217,7 @@ slowly_connect(Node, {get, Path}, From, Timeout) ->
BAD -> {error, BAD}
end,
gen_server:reply(From, Result);
slowly_connect(Node, {post, Path, Payload}, From, Timeout) ->
connect_slowly(Node, {post, Path, Payload}, From, Timeout) ->
HttpOptions = [{connect_timeout, 3000}, {timeout, Timeout}],
URL = lists:flatten(url(Node, Path)),
Request = {URL, [], "application/json", Payload},

27
src/hz_man.erl
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@ -40,11 +40,11 @@
req = none :: none | binary()}).
-record(s,
{tls = false :: boolean(),
chain_nodes = {[], []} :: {[hz:chain_node()], [hz:chain_node()]},
sticky = none :: none | hz:chain_node(),
fetchers = [] :: [#fetcher{}],
timeout = 5000 :: pos_integer()}).
{tls = false :: boolean(),
chain_nodes = {[], []} :: {[hz:chain_node()], [hz:chain_node()]},
sticky = none :: none | hz:chain_node(),
fetchers = [] :: [#fetcher{}],
timeout = 5000 :: pos_integer()}).
-type state() :: #s{}.
@ -169,8 +169,8 @@ handle_call({request_sticky, Request}, From, State) ->
{noreply, NewState};
handle_call(tls, _, State = #s{tls = TLS}) ->
{reply, TLS, State};
handle_call(chain_nodes, _, State = #s{chain_nodes = {Wait, Used}}) ->
Nodes = lists:append(Wait, Used),
handle_call(chain_nodes, _, State) ->
Nodes = do_chain_nodes(State),
{reply, Nodes, State};
handle_call(timeout, _, State = #s{timeout = Value}) ->
{reply, Value, State};
@ -239,6 +239,15 @@ terminate(_, _) ->
%%% Doer Functions
do_chain_nodes(#s{sticky = none, chain_nodes = {Wait, Used}}) ->
lists:append(Wait, Used);
do_chain_nodes(#s{sticky = Sticky, chain_nodes = {Wait, Used}}) ->
case lists:append(Wait, Used) of
[Sticky] -> [Sticky];
Nodes -> [Sticky | Nodes]
end.
do_chain_nodes([], State) ->
State#s{sticky = none, chain_nodes = {[], []}};
do_chain_nodes(List = [Sticky], State) ->
@ -268,7 +277,7 @@ do_request_sticky(Request,
Now = erlang:system_time(nanosecond),
Fetcher =
case TLS of
true -> fun() -> hz_fetcher:slowly_connect(Node, Request, From, Timeout) end;
true -> fun() -> hz_fetcher:connect_slowly(Node, Request, From, Timeout) end;
false -> fun() -> hz_fetcher:connect(Node, Request, From, Timeout) end
end,
{PID, Mon} = spawn_monitor(Fetcher),
@ -293,7 +302,7 @@ do_request(Request,
Now = erlang:system_time(nanosecond),
Fetcher =
case TLS of
true -> fun() -> hz_fetcher:slowly_connect(Node, Request, From, Timeout) end;
true -> fun() -> hz_fetcher:connect_slowly(Node, Request, From, Timeout) end;
false -> fun() -> hz_fetcher:connect(Node, Request, From, Timeout) end
end,
{PID, Mon} = spawn_monitor(Fetcher),