minor improvements

Author: ttt161

apps/bender/src/bender.erl

@@ -37,7 +37,7 @@ stop() ->
 -spec start(normal, any()) -> {ok, pid()} | {error, any()}.
 start(_StartType, _StartArgs) ->
     ok = setup_metrics(),
-    ok = db_init(application:get_env(bender, migrations_enabled, true)),
+    ok = db_init(application:get_env(bender, backend_mode, machinery)),
     supervisor:start_link({local, ?MODULE}, ?MODULE, []).
 
 -spec stop(any()) -> ok.
@@ -147,7 +147,7 @@ setup_metrics() ->
     ok = woody_ranch_prometheus_collector:setup(),
     ok = woody_hackney_prometheus_collector:setup().
 
-db_init(true) ->
+db_init(postgres) ->
     case code:priv_dir(bender) of
         {error, _} ->
             error({migration_error, cant_find_priv_dir});
@@ -159,7 +159,7 @@ db_init(true) ->
             DbOpts = maps:get(DbRef, Databases),
             db_init(MigrationsDir, DbOpts)
     end;
-db_init(false) ->
+db_init(machinery) ->
     ok.
 
 db_init(MigrationsDir, DbOpts) ->

apps/bender/test/bender_ct_helper.erl

@@ -73,7 +73,6 @@ start_apps(BackendMode, C) ->
     BenderApps = genlib_app:start_application_with(bender, [
         {db_ref, default_db},
         {backend_mode, BackendMode},
-        {migrations_enabled, migrations_enabled(BackendMode)},
         {machinery_backend, hybrid},
         {generator, #{
             path => <<"/v1/stateproc/bender_generator">>,
@@ -103,8 +102,3 @@ start_apps(BackendMode, C) ->
     ]),
     Apps = EpgConnectorApps ++ ProgressorApps ++ ScoperApps ++ BenderApps,
     [{suite_apps, Apps} | C].
-
-migrations_enabled(machinery) ->
-    false;
-migrations_enabled(postgres) ->
-    true.

config/sys.config

@@ -1,5 +1,14 @@
 [
     {bender, [
+        %% Available options for 'backend_mode'
+        %%     machinery (by default) | postgres
+        %%
+        %% For option 'postgres' ensure config 'db_ref'
+        %%     atom() ('bender' by default)
+        %% must be exists key from epg_connector.databases map
+        {backend_mode, postgres},
+        {db_ref, default_db},
+
         %% Available options for 'machinery_backend'
         %%     machinegun | progressor | hybrid
         %%