Fix errcheck in ./common/membership/ (#3742)

* Fix errcheck in ./common/membership/

common/dynamicconfig/file_based_client_test.go

@@ -343,7 +343,7 @@ testGetBoolPropertyKey:
 	mockLogger.EXPECT().Info("dynamic config changed for the key: testgetboolpropertykey oldValue: { constraints: {} value: false } newValue: { constraints: {} value: true }", gomock.Any())
 	mockLogger.EXPECT().Info("dynamic config changed for the key: testgetboolpropertykey oldValue: { constraints: {{Namespace:global-samples-namespace}} value: true } newValue: { constraints: {{Namespace:global-samples-namespace}} value: false }", gomock.Any())
 	mockLogger.EXPECT().Info(gomock.Any())
-	client.update()
+	s.NoError(client.update())
 	s.NoError(err)
 	close(doneCh)
 }
@@ -393,7 +393,7 @@ history.defaultActivityRetryPolicy:
 
 	mockLogger.EXPECT().Info("dynamic config changed for the key: history.defaultactivityretrypolicy oldValue: { constraints: {} value: map[BackoffCoefficient:3 InitialIntervalInSeconds:1 MaximumAttempts:0 MaximumIntervalCoefficient:100] } newValue: { constraints: {} value: map[BackoffCoefficient:2 InitialIntervalInSeconds:3 MaximumAttempts:0 MaximumIntervalCoefficient:100] }", gomock.Any())
 	mockLogger.EXPECT().Info(gomock.Any())
-	client.update()
+	s.NoError(client.update())
 	s.NoError(err)
 	close(doneCh)
 }
@@ -446,7 +446,7 @@ testGetIntPropertyKey:
 	mockLogger.EXPECT().Info("dynamic config changed for the key: testgetfloat64propertykey oldValue: nil newValue: { constraints: {{Namespace:samples-namespace}} value: 22 }", gomock.Any())
 	mockLogger.EXPECT().Info("dynamic config changed for the key: testgetintpropertykey oldValue: nil newValue: { constraints: {} value: 2000 }", gomock.Any())
 	mockLogger.EXPECT().Info(gomock.Any())
-	client.update()
+	s.NoError(client.update())
 	s.NoError(err)
 	close(doneCh)
 }
@@ -503,7 +503,7 @@ testGetFloat64PropertyKey:
 	reader.EXPECT().ReadFile(gomock.Any()).Return(updatedFileData, nil)
 
 	mockLogger.EXPECT().Info(gomock.Any()).Times(1)
-	client.update()
+	s.NoError(client.update())
 	s.NoError(err)
 	close(doneCh)
 }

common/membership/grpc_resolver.go

@@ -89,7 +89,9 @@ func (m *grpcBuilder) Build(target resolver.Target, cc resolver.ClientConn, opts
 		r:        r,
 		notifyCh: make(chan *ChangedEvent, 1),
 	}
-	resolver.start()
+	if err := resolver.start(); err != nil {
+		return nil, err
+	}
 	return resolver, nil
 }
 
@@ -100,14 +102,17 @@ type grpcResolver struct {
 	wg       sync.WaitGroup
 }
 
-func (m *grpcResolver) start() {
-	m.r.AddListener(fmt.Sprintf("%p", m), m.notifyCh)
+func (m *grpcResolver) start() error {
+	if err := m.r.AddListener(fmt.Sprintf("%p", m), m.notifyCh); err != nil {
+		return err
+	}
 	m.wg.Add(1)
 	go m.listen()
 
 	// Try once to get address synchronously. If this fails, it's okay, we'll listen for
 	// changes and update the resolver later.
 	m.resolve()
+	return nil
 }
 
 func (m *grpcResolver) listen() {
@@ -131,7 +136,9 @@ func (m *grpcResolver) resolve() {
 			Addr: hostInfo.GetAddress(),
 		})
 	}
-	m.cc.UpdateState(resolver.State{Addresses: addresses})
+	if err := m.cc.UpdateState(resolver.State{Addresses: addresses}); err != nil {
+		fmt.Printf("error updating state in gRPC resolver: %v", err)
+	}
 }
 
 func (m *grpcResolver) ResolveNow(_ resolver.ResolveNowOptions) {
@@ -142,7 +149,9 @@ func (m *grpcResolver) ResolveNow(_ resolver.ResolveNowOptions) {
 }
 
 func (m *grpcResolver) Close() {
-	m.r.RemoveListener(fmt.Sprintf("%p", m))
+	if err := m.r.RemoveListener(fmt.Sprintf("%p", m)); err != nil {
+		fmt.Printf("error removing listener from gRPC resolver: %v", err)
+	}
 	close(m.notifyCh)
 	m.wg.Wait() // wait until listen() exits
 }

common/membership/rpMonitor_test.go

@@ -28,9 +28,10 @@ import (
 	"testing"
 	"time"
 
-	"go.temporal.io/server/common/primitives"
 	"golang.org/x/exp/maps"
 
+	"go.temporal.io/server/common/primitives"
+
 	"github.com/stretchr/testify/require"
 	"github.com/stretchr/testify/suite"
 )
@@ -67,7 +68,7 @@ func (s *RpoSuite) TestRingpopMonitor() {
 
 	// Force refresh now and drain the notification channel
 	resolver, _ := rpm.GetResolver(serviceName)
-	resolver.(*ringpopServiceResolver).refresh()
+	s.NoError(resolver.(*ringpopServiceResolver).refresh())
 	drainChannel(listenCh)
 
 	s.T().Log("Killing host 1")