tests(clustering/rpc): add integration test fro deltas validation

spec/02-integration/18-hybrid_rpc/10-validate_deltas_spec.lua

@@ -0,0 +1,75 @@
+local rep = string.rep
+local helpers = require "spec.helpers"
+
+
+-- register a rpc connected event in custom plugin rpc-validation-test
+-- DISABLE rpc sync on cp side
+-- ENABLE rpc sync on dp side
+for _, strategy in helpers.each_strategy() do
+  describe("Hybrid Mode RPC #" .. strategy, function()
+
+    lazy_setup(function()
+      helpers.get_db_utils(strategy, {
+        "clustering_data_planes",
+      }) -- runs migrations
+
+      assert(helpers.start_kong({
+        role = "control_plane",
+        cluster_cert = "spec/fixtures/kong_clustering.crt",
+        cluster_cert_key = "spec/fixtures/kong_clustering.key",
+        database = strategy,
+        cluster_listen = "127.0.0.1:9005",
+        nginx_conf = "spec/fixtures/custom_nginx.template",
+        plugins = "bundled,rpc-validation-test",
+        nginx_worker_processes = 4, -- multiple workers
+        cluster_rpc = "on", -- enable rpc
+        cluster_rpc_sync = "off", -- disable rpc sync
+      }))
+
+      assert(helpers.start_kong({
+        role = "data_plane",
+        database = "off",
+        prefix = "servroot2",
+        cluster_cert = "spec/fixtures/kong_clustering.crt",
+        cluster_cert_key = "spec/fixtures/kong_clustering.key",
+        cluster_control_plane = "127.0.0.1:9005",
+        proxy_listen = "0.0.0.0:9002",
+        nginx_conf = "spec/fixtures/custom_nginx.template",
+        plugins = "bundled,rpc-validation-test",
+        nginx_worker_processes = 4, -- multiple workers
+        cluster_rpc = "on", -- enable rpc
+        cluster_rpc_sync = "on", -- enable rpc sync
+      }))
+    end)
+
+    lazy_teardown(function()
+      helpers.stop_kong("servroot2")
+      helpers.stop_kong()
+    end)
+
+    describe("sync.v2 validation works", function()
+      it("on dp side", function()
+        local name = "servroot2/logs/error.log"
+
+        -- dp logs
+        assert.logfile(name).has.line(
+          "[error]", true, 10)
+        assert.logfile(name).has.line(
+          "unable to create worker mutex and sync", true, 10)
+        assert.logfile(name).has.line(
+          "'meta': required field missing", true, 10)
+        assert.logfile(name).has.line(
+          "'config': required field missing", true, 10)
+
+        local name = nil
+
+        -- cp logs
+        assert.logfile(name).has.line(
+          "kong.sync.v2.get_delta ok", true, 10)
+        assert.logfile(name).has.no.line(
+          "[error]", true, 0)
+
+      end)
+    end)
+  end)
+end -- for _, strategy

spec/fixtures/custom_plugins/kong/plugins/rpc-validation-test/handler.lua

@@ -0,0 +1,41 @@
+local fmt = string.format
+local rep = string.rep
+
+
+local RpcSyncV2ValidationHandler = {
+  VERSION = "1.0",
+  PRIORITY = 1000,
+}
+
+
+function RpcSyncV2ValidationHandler:init_worker()
+  -- mock function on cp side
+  kong.rpc.callbacks:register("kong.sync.v2.get_delta", function(node_id, current_versions)
+    local latest_version = fmt("v02_%028x", 10)
+
+    local fake_uuid = "00000000-0000-0000-0000-111111111111"
+
+    -- a basic config data,
+    -- it has no field "config" or "meta",
+    -- and will cause validation error
+    local deltas = {
+      {
+        entity = {
+          id = fake_uuid,
+          name = "default",
+        },
+        type = "workspaces",
+        version = latest_version,
+        ws_id = fake_uuid,
+      },
+    }
+
+    ngx.log(ngx.DEBUG, "kong.sync.v2.get_delta ok: ", counter)
+
+    return { default = { deltas = deltas, wipe = true, }, }
+  end)
+
+end
+
+
+return RpcSyncV2ValidationHandler

spec/fixtures/custom_plugins/kong/plugins/rpc-validation-test/schema.lua

@@ -0,0 +1,12 @@
+return {
+  name = "rpc-validation-test",
+  fields = {
+    {
+      config = {
+        type = "record",
+        fields = {
+        },
+      },
+    },
+  },
+}