Turn off mixed version tests against Khepri

.github/workflows/test-plugin-mixed.yaml

@@ -29,7 +29,10 @@ jobs:
         - 26
         metadata_store:
           - mnesia
-          - khepri
+          # Khepri is currently skipped because Khepri is an unstable feature: we don't guarantee upgrability.
+          # Mixed-version tests currently fail with Khepri because of a new machine version introduced in
+          # Khepri v0.14.0.
+          # - khepri
         include:
         - erlang_version: 26
           elixir_version: 1.15

deps/rabbit/test/cluster_minority_SUITE.erl

@@ -54,13 +54,20 @@ suite() ->
 %% Testsuite setup/teardown.
 %% -------------------------------------------------------------------
 
-init_per_suite(Config0) ->
+init_per_suite(Config) ->
     rabbit_ct_helpers:log_environment(),
-    Config = rabbit_ct_helpers:set_config(Config0, [{metadata_store, khepri}]),
-    rabbit_ct_helpers:run_setup_steps(Config,
-                                      [
-                                       fun rabbit_ct_broker_helpers:configure_dist_proxy/1
-                                      ]).
+    case rabbit_ct_broker_helpers:configured_metadata_store(Config) of
+        mnesia ->
+            %% This SUITE is meant to test how Khepri behaves in a minority,
+            %% so mnesia should be skipped.
+            {skip, "Minority testing not supported by mnesia"};
+        _ ->
+            rabbit_ct_helpers:run_setup_steps(
+              Config,
+              [
+               fun rabbit_ct_broker_helpers:configure_dist_proxy/1
+              ])
+    end.
 
 end_per_suite(Config) ->
     rabbit_ct_helpers:run_teardown_steps(Config).

deps/rabbit/test/clustering_management_SUITE.erl

@@ -129,10 +129,20 @@ init_per_suite(Config) ->
 end_per_suite(Config) ->
     rabbit_ct_helpers:run_teardown_steps(Config).
 
-init_per_group(mnesia_store, Config) ->
-    rabbit_ct_helpers:set_config(Config, [{metadata_store, mnesia}]);
 init_per_group(khepri_store, Config) ->
-    rabbit_ct_helpers:set_config(Config, [{metadata_store, khepri}]);
+    case rabbit_ct_broker_helpers:configured_metadata_store(Config) of
+        mnesia ->
+            {skip, "These tests target Khepri"};
+        _ ->
+            Config
+    end;
+init_per_group(mnesia_store, Config) ->
+    case rabbit_ct_broker_helpers:configured_metadata_store(Config) of
+        {khepri, _} ->
+            {skip, "These tests target mnesia"};
+        _ ->
+            Config
+    end;
 init_per_group(unclustered_2_nodes, Config) ->
     rabbit_ct_helpers:set_config(Config, [{rmq_nodes_clustered, false}]);
 init_per_group(unclustered_3_nodes, Config) ->

deps/rabbit/test/clustering_recovery_SUITE.erl

@@ -72,9 +72,19 @@ end_per_suite(Config) ->
     rabbit_ct_helpers:run_teardown_steps(Config).
 
 init_per_group(khepri_store, Config) ->
-    rabbit_ct_helpers:set_config(Config, [{metadata_store, khepri}]);
+    case rabbit_ct_broker_helpers:configured_metadata_store(Config) of
+        mnesia ->
+            {skip, "These tests target Khepri"};
+        _ ->
+            Config
+    end;
 init_per_group(mnesia_store, Config) ->
-    rabbit_ct_helpers:set_config(Config, [{metadata_store, mnesia}]);
+    case rabbit_ct_broker_helpers:configured_metadata_store(Config) of
+        {khepri, _} ->
+            {skip, "These tests target mnesia"};
+        _ ->
+            Config
+    end;
 init_per_group(clustered_3_nodes, Config) ->
     rabbit_ct_helpers:set_config(Config, [{rmq_nodes_clustered, true}]);
 init_per_group(clustered_5_nodes, Config) ->

deps/rabbit/test/metadata_store_clustering_SUITE.erl

@@ -58,7 +58,14 @@ cluster_size_3_tests() ->
 
 init_per_suite(Config) ->
     rabbit_ct_helpers:log_environment(),
-    rabbit_ct_helpers:run_setup_steps(Config, []).
+    case rabbit_ct_helpers:is_mixed_versions() of
+        true ->
+            %% Khepri is not yet compatible with mixed version testing and this
+            %% suite enables Khepri.
+            {skip, "This suite does not yet support mixed version testing"};
+        false ->
+            rabbit_ct_helpers:run_setup_steps(Config, [])
+    end.
 
 end_per_suite(Config) ->
     rabbit_ct_helpers:run_teardown_steps(Config).

deps/rabbitmq_consistent_hash_exchange/BUILD.bazel

@@ -82,7 +82,6 @@ broker_for_integration_suites()
 
 rabbitmq_integration_suite(
     name = "rabbit_exchange_type_consistent_hash_SUITE",
-    shard_count = 7,
     runtime_deps = [
         "//deps/rabbitmq_amqp_client:erlang_app",
     ],

deps/rabbitmq_consistent_hash_exchange/test/rabbit_exchange_type_consistent_hash_SUITE.erl

@@ -20,23 +20,17 @@
 
 all() ->
     [
-      {group, mnesia_store},
-      {group, khepri_store},
+      {group, routing_tests},
+      {group, hash_ring_management_tests},
+      {group, clustered},
       {group, khepri_migration}
     ].
 
 groups() ->
     [
-     {mnesia_store, [], [
-                         {routing_tests, [], routing_tests()},
-                         {hash_ring_management_tests, [], hash_ring_management_tests()},
-                         {clustered, [], [node_restart]}
-                        ]},
-     {khepri_store, [], [
-                         {routing_tests, [], routing_tests()},
-                         {hash_ring_management_tests, [], hash_ring_management_tests()},
-                         {clustered, [], [node_restart]}
-                        ]},
+     {routing_tests, [], routing_tests()},
+     {hash_ring_management_tests, [], hash_ring_management_tests()},
+     {clustered, [], [node_restart]},
      {khepri_migration, [], [
                              from_mnesia_to_khepri
                             ]}
@@ -82,14 +76,13 @@ init_per_suite(Config) ->
 end_per_suite(Config) ->
     rabbit_ct_helpers:run_teardown_steps(Config).
 
-init_per_group(mnesia_store, Config) ->
-    rabbit_ct_helpers:set_config(Config, [{metadata_store, mnesia}]);
-init_per_group(khepri_store, Config) ->
-    FFs = [khepri_db],
-    rabbit_ct_helpers:set_config(Config, [{metadata_store, {khepri, FFs}}]);
-init_per_group(khepri_migration = Group, Config0) ->
-    Config = rabbit_ct_helpers:set_config(Config0, [{metadata_store, mnesia}]),
-    init_per_group(Group, Config, 1);
+init_per_group(khepri_migration = Group, Config) ->
+    case rabbit_ct_broker_helpers:configured_metadata_store(Config) of
+        mnesia ->
+            init_per_group(Group, Config, 1);
+        _ ->
+            {skip, "This group only targets mnesia"}
+    end;
 init_per_group(clustered = Group, Config) ->
     init_per_group(Group, Config, 3);
 init_per_group(Group, Config) ->
@@ -105,12 +98,6 @@ init_per_group(Group, Config, NodesCount) ->
                                 rabbit_ct_broker_helpers:setup_steps() ++
                                 rabbit_ct_client_helpers:setup_steps()).
 
-end_per_group(mnesia_store, Config) ->
-    Config;
-end_per_group(khepri_store, Config) ->
-    Config;
-end_per_group(khepri_migration, Config) ->
-    Config;
 end_per_group(_, Config) ->
     rabbit_ct_helpers:run_teardown_steps(Config,
                                          rabbit_ct_client_helpers:teardown_steps() ++