Add healthy check for InvalidateCollectionMetaCache (#20368)

Signed-off-by: NCongqi Xia <congqi.xia@zilliz.com>
Signed-off-by: NCongqi Xia <congqi.xia@zilliz.com>

internal/proxy/impl.go

@@ -102,6 +102,10 @@ func (node *Proxy) GetStatisticsChannel(ctx context.Context) (*milvuspb.StringRe
 
 // InvalidateCollectionMetaCache invalidate the meta cache of specific collection.
 func (node *Proxy) InvalidateCollectionMetaCache(ctx context.Context, request *proxypb.InvalidateCollMetaCacheRequest) (*commonpb.Status, error) {
+	if !node.checkHealthy() {
+		return unhealthyStatus(), nil
+	}
+
 	ctx = logutil.WithModule(ctx, moduleName)
 	logutil.Logger(ctx).Info("received request to invalidate collection meta cache",
 		zap.String("role", typeutil.ProxyRole),

internal/proxy/impl_test.go

@@ -28,6 +28,7 @@ func TestProxy_InvalidateCollectionMetaCache_remove_stream(t *testing.T) {
 	}
 
 	node := &Proxy{chMgr: chMgr}
+	node.stateCode.Store(commonpb.StateCode_Healthy)
 
 	ctx := context.Background()
 	req := &proxypb.InvalidateCollMetaCacheRequest{

internal/proxy/proxy_test.go

@@ -2680,6 +2680,12 @@ func TestProxy(t *testing.T) {
 		assert.NotEqual(t, commonpb.ErrorCode_Success, resp.Status.ErrorCode)
 	})
 
+	t.Run("InvalidateCollectionMetaCache failed", func(t *testing.T) {
+		resp, err := proxy.InvalidateCollectionMetaCache(ctx, &proxypb.InvalidateCollMetaCacheRequest{})
+		assert.NoError(t, err)
+		assert.NotEqual(t, commonpb.ErrorCode_Success, resp.GetErrorCode())
+	})
+
 	testProxyRoleUnhealthy(ctx, t, proxy)
 	testProxyPrivilegeUnhealthy(ctx, t, proxy)
 	testProxyRefreshPolicyInfoCacheUnhealthy(ctx, t, proxy)