linear: fix test cases

Signed-off-by: Fu-Sheng <[email protected]>

pkg/cache/v3/linear_test.go

@@ -742,6 +742,7 @@ func TestLinearMixedWatches(t *testing.T) {
 	assert.Equal(t, 2, c.NumResources())
 
 	sotwState := stream.NewStreamState(false, nil)
+	sotwState.SetKnownResourceNamesAsList(testType, []string{"a", "b"})
 	w := make(chan Response, 1)
 	c.CreateWatch(&Request{ResourceNames: []string{"a", "b"}, TypeUrl: testType, VersionInfo: c.getVersion()}, sotwState, w)
 	mustBlock(t, w)
@@ -754,7 +755,7 @@ func TestLinearMixedWatches(t *testing.T) {
 	err = c.UpdateResources(map[string]types.Resource{"a": a}, nil)
 	assert.NoError(t, err)
 	// This behavior is currently invalid for cds and lds, but due to a current limitation of linear cache sotw implementation
-	verifyResponse(t, w, c.getVersion(), 1)
+	verifyResponse(t, w, c.getVersion(), 2)
 	checkVersionMapNotSet(t, c)
 
 	c.CreateWatch(&Request{ResourceNames: []string{"a", "b"}, TypeUrl: testType, VersionInfo: c.getVersion()}, sotwState, w)
@@ -775,6 +776,6 @@ func TestLinearMixedWatches(t *testing.T) {
 	assert.NoError(t, err)
 	checkVersionMapSet(t, c)
 
-	verifyResponse(t, w, c.getVersion(), 0)
+	verifyResponse(t, w, c.getVersion(), 1)
 	verifyDeltaResponse(t, wd, nil, []string{"b"})
 }

pkg/server/stream/v3/stream.go

@@ -41,6 +41,8 @@ type StreamState struct { // nolint:golint,revive
 
 	// indicates whether the object has been modified since its creation
 	first bool
+
+	mu *sync.RWMutex
 }
 
 // GetSubscribedResourceNames returns the list of resources currently explicitly subscribed to
@@ -95,10 +97,16 @@ func (s *StreamState) IsWildcard() bool {
 }
 
 func (s *StreamState) SetKnownResourceNames(url string, names map[string]struct{}) {
+	s.mu.Lock()
+	defer s.mu.Unlock()
+
 	s.knownResourceNames[url] = names
 }
 
 func (s *StreamState) SetKnownResourceNamesAsList(url string, names []string) {
+	s.mu.Lock()
+	defer s.mu.Unlock()
+
 	m := map[string]struct{}{}
 	for _, name := range names {
 		m[name] = struct{}{}
@@ -107,6 +115,9 @@ func (s *StreamState) SetKnownResourceNamesAsList(url string, names []string) {
 }
 
 func (s *StreamState) GetKnownResourceNames(url string) map[string]struct{} {
+	s.mu.Lock()
+	defer s.mu.Unlock()
+
 	return s.knownResourceNames[url]
 }
 
@@ -118,6 +129,7 @@ func NewStreamState(wildcard bool, initialResourceVersions map[string]string) St
 		resourceVersions:        initialResourceVersions,
 		first:                   true,
 		knownResourceNames:      map[string]map[string]struct{}{},
+		mu:                      &sync.RWMutex{},
 	}
 
 	if initialResourceVersions == nil {