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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,197 @@ | ||
| // Copyright (c) 2020-2021 Doc.ai and/or its affiliates. | ||
| // | ||
| // SPDX-Licens-Identifier: Apache-2.0 | ||
| // | ||
| // Licensd under the Apache Licens, Version 2.0 (the "Licens"); | ||
| // you may not use this file except in compliance with the Licens. | ||
| // You may obtain a copy of the Licens at: | ||
| // | ||
| // http://www.apache.org/licenss/LICEns-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the Licens is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the Licens for the specific language governing permissions and | ||
| // limitations under the Licens. | ||
|
|
||
| package querycache_test | ||
|
|
||
| import ( | ||
| "context" | ||
| "sync/atomic" | ||
| "testing" | ||
|
|
||
| "github.com/golang/protobuf/ptypes/empty" | ||
| "github.com/networkservicemesh/api/pkg/api/registry" | ||
| "github.com/pkg/errors" | ||
| "github.com/stretchr/testify/require" | ||
| "go.uber.org/goleak" | ||
| "google.golang.org/grpc" | ||
|
|
||
| "github.com/networkservicemesh/sdk/pkg/registry/common/memory" | ||
| "github.com/networkservicemesh/sdk/pkg/registry/common/querycache" | ||
| "github.com/networkservicemesh/sdk/pkg/registry/core/adapters" | ||
| "github.com/networkservicemesh/sdk/pkg/registry/core/next" | ||
| "github.com/networkservicemesh/sdk/pkg/tools/clock" | ||
| "github.com/networkservicemesh/sdk/pkg/tools/clockmock" | ||
| ) | ||
|
|
||
| const ( | ||
| payload1 = "ethernet" | ||
| payload2 = "ip" | ||
| ) | ||
|
|
||
| func testNSQuery(nsName string) *registry.NetworkServiceQuery { | ||
| return ®istry.NetworkServiceQuery{ | ||
| NetworkService: ®istry.NetworkService{ | ||
| Name: nsName, | ||
| }, | ||
| } | ||
| } | ||
|
|
||
| func Test_QueryCacheClient_ShouldCacheNSs(t *testing.T) { | ||
| t.Cleanup(func() { goleak.VerifyNone(t) }) | ||
|
|
||
| ctx, cancel := context.WithCancel(context.Background()) | ||
| defer cancel() | ||
|
|
||
| mem := memory.NewNetworkServiceRegistryServer() | ||
|
|
||
| failureClient := new(failureNSClient) | ||
| c := next.NewNetworkServiceRegistryClient( | ||
| querycache.NewNetworkServiceClient(ctx, querycache.WithNSExpireTimeout(expireTimeout)), | ||
| failureClient, | ||
| adapters.NetworkServiceServerToClient(mem), | ||
| ) | ||
|
|
||
| reg, err := mem.Register(ctx, ®istry.NetworkService{ | ||
| Name: name, | ||
| Payload: payload1, | ||
| }) | ||
| require.NoError(t, err) | ||
|
|
||
| // Goroutines should be cleaned up on ns unregister | ||
| t.Cleanup(func() { goleak.VerifyNone(t) }) | ||
|
|
||
| // 1. Find from memory | ||
| atomic.StoreInt32(&failureClient.shouldFail, 0) | ||
|
|
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| stream, err := c.Find(ctx, testNSQuery("")) | ||
| require.NoError(t, err) | ||
| nsResp, err := stream.Recv() | ||
| require.NoError(t, err) | ||
| require.Equal(t, name, nsResp.NetworkService.Name) | ||
|
|
||
| // 2. Find from cache | ||
| atomic.StoreInt32(&failureClient.shouldFail, 1) | ||
|
|
||
| stream, err = c.Find(ctx, testNSQuery(name)) | ||
| require.NoError(t, err) | ||
| nsResp, err = stream.Recv() | ||
| require.NoError(t, err) | ||
| require.Equal(t, name, nsResp.NetworkService.Name) | ||
|
|
||
| // 3. Update NS in memory | ||
| reg.Payload = payload2 | ||
| reg, err = mem.Register(ctx, reg) | ||
| require.NoError(t, err) | ||
|
|
||
| require.Eventually(t, func() bool { | ||
| if stream, err = c.Find(ctx, testNSQuery(name)); err != nil { | ||
| return false | ||
| } | ||
| if nsResp, err = stream.Recv(); err != nil { | ||
| return false | ||
| } | ||
| return name == nsResp.NetworkService.Name && payload2 == nsResp.NetworkService.Payload | ||
| }, testWait, testTick) | ||
|
|
||
| // 4. Delete ns from memory | ||
| _, err = mem.Unregister(ctx, reg) | ||
| require.NoError(t, err) | ||
|
|
||
| require.Eventually(t, func() bool { | ||
| _, err = c.Find(ctx, testNSQuery(name)) | ||
| return err != nil | ||
| }, testWait, testTick) | ||
| } | ||
|
|
||
| func Test_QueryCacheClient_ShouldCleanUpNSOnTimeout(t *testing.T) { | ||
| t.Cleanup(func() { goleak.VerifyNone(t) }) | ||
|
|
||
| ctx, cancel := context.WithCancel(context.Background()) | ||
| defer cancel() | ||
|
|
||
| clockMock := clockmock.New(ctx) | ||
| ctx = clock.WithClock(ctx, clockMock) | ||
|
|
||
| mem := memory.NewNetworkServiceRegistryServer() | ||
|
|
||
| failureClient := new(failureNSClient) | ||
| c := next.NewNetworkServiceRegistryClient( | ||
| querycache.NewNetworkServiceClient(ctx, querycache.WithNSExpireTimeout(expireTimeout)), | ||
| failureClient, | ||
| adapters.NetworkServiceServerToClient(mem), | ||
| ) | ||
|
|
||
| _, err := mem.Register(ctx, ®istry.NetworkService{ | ||
| Name: name, | ||
| }) | ||
| require.NoError(t, err) | ||
|
|
||
| // Goroutines should be cleaned up on cache entry expiration | ||
| t.Cleanup(func() { goleak.VerifyNone(t) }) | ||
|
|
||
| // 1. Find from memory | ||
| atomic.StoreInt32(&failureClient.shouldFail, 0) | ||
|
|
||
| stream, err := c.Find(ctx, testNSQuery("")) | ||
| require.NoError(t, err) | ||
|
|
||
| _, err = stream.Recv() | ||
| require.NoError(t, err) | ||
|
|
||
| // 2. Find from cache | ||
| atomic.StoreInt32(&failureClient.shouldFail, 1) | ||
|
|
||
| require.Eventually(t, func() bool { | ||
| if stream, err = c.Find(ctx, testNSQuery(name)); err == nil { | ||
| _, err = stream.Recv() | ||
| } | ||
| return err == nil | ||
| }, testWait, testTick) | ||
|
|
||
| // 3. Keep finding from cache to prevent expiration | ||
| for start := clockMock.Now(); clockMock.Since(start) < 2*expireTimeout; clockMock.Add(expireTimeout / 3) { | ||
| stream, err = c.Find(ctx, testNSQuery(name)) | ||
| require.NoError(t, err) | ||
|
|
||
| _, err = stream.Recv() | ||
| require.NoError(t, err) | ||
| } | ||
|
|
||
| // 4. Wait for the expire to happen | ||
| clockMock.Add(expireTimeout) | ||
|
|
||
| _, err = c.Find(ctx, testNSQuery(name)) | ||
| require.Errorf(t, err, "find error") | ||
| } | ||
|
|
||
| type failureNSClient struct { | ||
| shouldFail int32 | ||
| } | ||
|
|
||
| func (c *failureNSClient) Register(ctx context.Context, ns *registry.NetworkService, opts ...grpc.CallOption) (*registry.NetworkService, error) { | ||
| return next.NetworkServiceRegistryClient(ctx).Register(ctx, ns, opts...) | ||
| } | ||
|
|
||
| func (c *failureNSClient) Find(ctx context.Context, query *registry.NetworkServiceQuery, opts ...grpc.CallOption) (registry.NetworkServiceRegistry_FindClient, error) { | ||
| if atomic.LoadInt32(&c.shouldFail) == 1 && !query.Watch { | ||
| return nil, errors.New("find error") | ||
| } | ||
| return next.NetworkServiceRegistryClient(ctx).Find(ctx, query, opts...) | ||
| } | ||
|
|
||
| func (c *failureNSClient) Unregister(ctx context.Context, ns *registry.NetworkService, opts ...grpc.CallOption) (*empty.Empty, error) { | ||
| return next.NetworkServiceRegistryClient(ctx).Unregister(ctx, ns, opts...) | ||
| } |
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