Add config option for enabling local_random_exchange

(cherry picked from commit 8a323b1)

Author: Deeksha

deps/rabbit/priv/schema/rabbit.schema

@@ -2608,9 +2608,9 @@ end}.
 
 %% Enable or disable local random exchange
 %%
-%% {enable_local_random_exchange, false},
+%% {exchange_types.local_random.enabled, false},
 
-{mapping, "enable_local_random_exchange", "rabbit.enable_local_random_exchange", [
+{mapping, "exchange_types.local_random.enabled", "rabbit.local_random_exchange_enabled", [
     {datatype, {enum, [true, false]}}
 ]}.
 

deps/rabbit/src/rabbit_exchange_type_local_random.erl

@@ -59,13 +59,21 @@ info(_X, _) -> [].
 serialise_events() -> false.
 validate(_X) ->
     case rabbit_feature_flags:is_enabled(?MODULE) andalso
-         rabbit_misc:get_env(rabbit, enable_local_random_exchange, true) of
+         rabbit_misc:get_env(rabbit, enable_local_random_exchange, false) of
         true ->
-            ok;
+            case application:get_env(rabbit, local_random_exchange_enabled, true) of
+                true ->
+                    ok;
+                false ->
+                    rabbit_misc:protocol_error(
+                      precondition_failed,
+                      "x-local-random exchange is disabled by configuration", [],
+                      'exchange.declare')
+            end;
         false ->
             rabbit_misc:protocol_error(
               precondition_failed,
-              "x-local-random exchange feature not available", [],
+              "x-local-random exchange feature flag is disabled", [],
               'exchange.declare')
     end.
 

deps/rabbit/test/rabbit_local_random_exchange_SUITE.erl

@@ -23,6 +23,8 @@ groups() ->
                                routed_to_one_local_queue_test,
                                no_route,
                                enable_local_random_exchange_config_test
+                               no_route,
+                               enable_local_random_exchange_config_test
                               ]}
     ].
 
@@ -202,15 +204,15 @@ enable_local_random_exchange_config_test(Config) ->
 
     %% Disable the config flag
     rabbit_ct_broker_helpers:rpc(Config, 0, application, set_env,
-                                 [rabbit, enable_local_random_exchange, false]),
+                                 [rabbit, local_random_exchange_enabled, false]),
 
     %% Try to create exchange - should fail
     ?assertExit({{shutdown, {server_initiated_close, 406, _}}, _},
                 declare_exchange(Config, E)),
 
     %% Re-enable the config flag
     rabbit_ct_broker_helpers:rpc(Config, 0, application, set_env,
-                                 [rabbit, enable_local_random_exchange, true]),
+                                 [rabbit, local_random_exchange_enabled, true]),
 
     %% Now exchange creation should succeed
     declare_exchange(Config, E),