Start tty logger if headless, check config for duplicate ids

src/gmhc_app.erl

@@ -45,6 +45,7 @@ stop(_State) ->
     ok.
 
 set_things_up() ->
+    maybe_add_logger_handler(),
     gmhc_counters:initialize(),
     gmhc_config:load_config(),
     logger:set_module_level([gmhw_pow_cuckoo], notice),
@@ -59,3 +60,16 @@ set_things_up() ->
         _ -> ok
     end,
     ok.
+
+maybe_add_logger_handler() ->
+    case is_headless() orelse application:get_env(gmhive_client, tty_logger, false) of
+        true ->
+            Level = application:get_env(gmhive_client, tty_logger_level, error),
+            io:fwrite("Adding logger handler: ~p~n", [Level]),
+            logger:add_handler(gmhc_tty, logger_std_h, #{level => Level});
+        false ->
+            ok
+    end.
+
+is_headless() ->
+    undefined == application:get_key(gajumine, vsn).

src/gmhc_config.erl

@@ -14,8 +14,20 @@ load_config() ->
     gmconfig:apply_os_env(),
     gmconfig:process_plain_args(),
     check_application_env(),
+    check_final_config(),
     ok.
 
+check_final_config() ->
+    ExtraPubkeys = get_config([<<"extra_pubkeys">>]),
+    AllKeys = [get_config([<<"pubkey">>]) | ExtraPubkeys],
+    case AllKeys -- lists:usort(AllKeys) of
+        [] ->
+            ok;
+        Duplicates ->
+            ?LOG_ERROR("Duplicate account ids found: ~p", [Duplicates]),
+            error({duplicate_account_ids, Duplicates})
+    end.
+
 instrument_gmconfig() ->
     gmconfig:set_gmconfig_env(gmconfig_env()).