snapshot of https://github.com/grpc/grpc-go.git (master, 2026-09-15; blobs > 131072B omitted)

test/control_plane_status_test.go

@@ -0,0 +1,234 @@
+/*
+ *
+ * Copyright 2022 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+package test
+
+import (
+	"context"
+	"strings"
+	"testing"
+	"time"
+
+	"google.golang.org/grpc"
+	"google.golang.org/grpc/balancer"
+	"google.golang.org/grpc/balancer/base"
+	"google.golang.org/grpc/codes"
+	"google.golang.org/grpc/connectivity"
+	"google.golang.org/grpc/internal/balancer/stub"
+	iresolver "google.golang.org/grpc/internal/resolver"
+	"google.golang.org/grpc/internal/stubserver"
+	testpb "google.golang.org/grpc/interop/grpc_testing"
+	"google.golang.org/grpc/resolver"
+	"google.golang.org/grpc/resolver/manual"
+	"google.golang.org/grpc/status"
+)
+
+func (s) TestConfigSelectorStatusCodes(t *testing.T) {
+	testCases := []struct {
+		name  string
+		csErr error
+		want  error
+	}{{
+		name:  "legal status code",
+		csErr: status.Errorf(codes.Unavailable, "this error is fine"),
+		want:  status.Errorf(codes.Unavailable, "this error is fine"),
+	}, {
+		name:  "illegal status code",
+		csErr: status.Errorf(codes.NotFound, "this error is bad"),
+		want:  status.Errorf(codes.Internal, "this error is bad"),
+	}}
+
+	for _, tc := range testCases {
+		t.Run(tc.name, func(t *testing.T) {
+			ss := &stubserver.StubServer{
+				EmptyCallF: func(context.Context, *testpb.Empty) (*testpb.Empty, error) {
+					return &testpb.Empty{}, nil
+				},
+			}
+			ss.R = manual.NewBuilderWithScheme("confSel")
+
+			if err := ss.Start(nil); err != nil {
+				t.Fatalf("Error starting endpoint server: %v", err)
+			}
+			defer ss.Stop()
+
+			state := iresolver.SetConfigSelector(resolver.State{
+				Addresses:     []resolver.Address{{Addr: ss.Address}},
+				ServiceConfig: parseServiceConfig(t, ss.R, "{}"),
+			}, funcConfigSelector{
+				f: func(iresolver.RPCInfo) (*iresolver.RPCConfig, error) {
+					return nil, tc.csErr
+				},
+			})
+			ss.R.UpdateState(state) // Blocks until config selector is applied
+
+			ctx, cancel := context.WithTimeout(context.Background(), defaultTestTimeout)
+			defer cancel()
+			if _, err := ss.Client.EmptyCall(ctx, &testpb.Empty{}); status.Code(err) != status.Code(tc.want) || !strings.Contains(err.Error(), status.Convert(tc.want).Message()) {
+				t.Fatalf("client.EmptyCall(_, _) = _, %v; want _, %v", err, tc.want)
+			}
+		})
+	}
+}
+
+func (s) TestPickerStatusCodes(t *testing.T) {
+	testCases := []struct {
+		name      string
+		pickerErr error
+		want      error
+	}{{
+		name:      "legal status code",
+		pickerErr: status.Errorf(codes.Unavailable, "this error is fine"),
+		want:      status.Errorf(codes.Unavailable, "this error is fine"),
+	}, {
+		name:      "illegal status code",
+		pickerErr: status.Errorf(codes.NotFound, "this error is bad"),
+		want:      status.Errorf(codes.Internal, "this error is bad"),
+	}}
+
+	for _, tc := range testCases {
+		t.Run(tc.name, func(t *testing.T) {
+			ss := &stubserver.StubServer{
+				EmptyCallF: func(context.Context, *testpb.Empty) (*testpb.Empty, error) {
+					return &testpb.Empty{}, nil
+				},
+			}
+
+			if err := ss.Start(nil); err != nil {
+				t.Fatalf("Error starting endpoint server: %v", err)
+			}
+			defer ss.Stop()
+
+			// Create a stub balancer that creates a picker that always returns
+			// an error.
+			sbf := stub.BalancerFuncs{
+				UpdateClientConnState: func(d *stub.BalancerData, _ balancer.ClientConnState) error {
+					d.ClientConn.UpdateState(balancer.State{
+						ConnectivityState: connectivity.TransientFailure,
+						Picker:            base.NewErrPicker(tc.pickerErr),
+					})
+					return nil
+				},
+			}
+			stub.Register("testPickerStatusCodesBalancer", sbf)
+
+			ss.NewServiceConfig(`{"loadBalancingConfig": [{"testPickerStatusCodesBalancer":{}}] }`)
+
+			// Make calls until pickerErr is received.
+			ctx, cancel := context.WithTimeout(context.Background(), defaultTestTimeout)
+			defer cancel()
+
+			var lastErr error
+			for ctx.Err() == nil {
+				if _, lastErr = ss.Client.EmptyCall(ctx, &testpb.Empty{}); status.Code(lastErr) == status.Code(tc.want) && strings.Contains(lastErr.Error(), status.Convert(tc.want).Message()) {
+					// Success!
+					return
+				}
+				time.Sleep(time.Millisecond)
+			}
+
+			t.Fatalf("client.EmptyCall(_, _) = _, %v; want _, %v", lastErr, tc.want)
+		})
+	}
+}
+
+func (s) TestCallCredsFromDialOptionsStatusCodes(t *testing.T) {
+	testCases := []struct {
+		name     string
+		credsErr error
+		want     error
+	}{{
+		name:     "legal status code",
+		credsErr: status.Errorf(codes.Unavailable, "this error is fine"),
+		want:     status.Errorf(codes.Unavailable, "this error is fine"),
+	}, {
+		name:     "illegal status code",
+		credsErr: status.Errorf(codes.NotFound, "this error is bad"),
+		want:     status.Errorf(codes.Internal, "this error is bad"),
+	}}
+
+	for _, tc := range testCases {
+		t.Run(tc.name, func(t *testing.T) {
+			ss := &stubserver.StubServer{
+				EmptyCallF: func(context.Context, *testpb.Empty) (*testpb.Empty, error) {
+					return &testpb.Empty{}, nil
+				},
+			}
+
+			errChan := make(chan error, 1)
+			creds := &testPerRPCCredentials{errChan: errChan}
+
+			if err := ss.Start(nil, grpc.WithPerRPCCredentials(creds)); err != nil {
+				t.Fatalf("Error starting endpoint server: %v", err)
+			}
+			defer ss.Stop()
+
+			ctx, cancel := context.WithTimeout(context.Background(), defaultTestTimeout)
+			defer cancel()
+
+			errChan <- tc.credsErr
+
+			if _, err := ss.Client.EmptyCall(ctx, &testpb.Empty{}); status.Code(err) != status.Code(tc.want) || !strings.Contains(err.Error(), status.Convert(tc.want).Message()) {
+				t.Fatalf("client.EmptyCall(_, _) = _, %v; want _, %v", err, tc.want)
+			}
+		})
+	}
+}
+
+func (s) TestCallCredsFromCallOptionsStatusCodes(t *testing.T) {
+	testCases := []struct {
+		name     string
+		credsErr error
+		want     error
+	}{{
+		name:     "legal status code",
+		credsErr: status.Errorf(codes.Unavailable, "this error is fine"),
+		want:     status.Errorf(codes.Unavailable, "this error is fine"),
+	}, {
+		name:     "illegal status code",
+		credsErr: status.Errorf(codes.NotFound, "this error is bad"),
+		want:     status.Errorf(codes.Internal, "this error is bad"),
+	}}
+
+	for _, tc := range testCases {
+		t.Run(tc.name, func(t *testing.T) {
+			ss := &stubserver.StubServer{
+				EmptyCallF: func(context.Context, *testpb.Empty) (*testpb.Empty, error) {
+					return &testpb.Empty{}, nil
+				},
+			}
+
+			errChan := make(chan error, 1)
+			creds := &testPerRPCCredentials{errChan: errChan}
+
+			if err := ss.Start(nil); err != nil {
+				t.Fatalf("Error starting endpoint server: %v", err)
+			}
+			defer ss.Stop()
+
+			ctx, cancel := context.WithTimeout(context.Background(), defaultTestTimeout)
+			defer cancel()
+
+			errChan <- tc.credsErr
+
+			if _, err := ss.Client.EmptyCall(ctx, &testpb.Empty{}, grpc.PerRPCCredentials(creds)); status.Code(err) != status.Code(tc.want) || !strings.Contains(err.Error(), status.Convert(tc.want).Message()) {
+				t.Fatalf("client.EmptyCall(_, _) = _, %v; want _, %v", err, tc.want)
+			}
+		})
+	}
+}