| // Licensed to Apache Software Foundation (ASF) under one or more contributor |
| // license agreements. See the NOTICE file distributed with |
| // this work for additional information regarding copyright |
| // ownership. Apache Software Foundation (ASF) licenses this file to you 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 grpc |
| |
| import ( |
| "context" |
| "fmt" |
| "net/url" |
| "testing" |
| "time" |
| |
| "github.com/apache/skywalking-go/plugins/core" |
| "github.com/apache/skywalking-go/plugins/core/reporter" |
| |
| "github.com/go-kratos/examples/helloworld/helloworld" |
| |
| "github.com/go-kratos/kratos/v2/transport/grpc" |
| |
| "github.com/stretchr/testify/assert" |
| |
| nativeGRPC "google.golang.org/grpc" |
| "google.golang.org/grpc/credentials/insecure" |
| |
| agentv3 "skywalking.apache.org/repo/goapi/collect/language/agent/v3" |
| ) |
| |
| func init() { |
| core.ResetTracingContext() |
| } |
| |
| type service struct { |
| helloworld.UnimplementedGreeterServer |
| } |
| |
| func (s *service) SayHello(ctx context.Context, in *helloworld.HelloRequest) (*helloworld.HelloReply, error) { |
| return &helloworld.HelloReply{Message: fmt.Sprintf("Hello %s", in.Name)}, nil |
| } |
| |
| func TestAfterInvoke(t *testing.T) { |
| defer core.ResetTracingContext() |
| // build server with middleware |
| server := grpc.NewServer(grpc.Middleware(serverMiddleware)) |
| endpoint, err := server.Endpoint() |
| assert.Nil(t, err, "server.Endpoint() error = %v", err) |
| assert.NotNil(t, endpoint, "server.Endpoint() endpoint is nil") |
| helloworld.RegisterGreeterServer(server, &service{}) |
| go func() { |
| // start server |
| if err1 := server.Start(context.Background()); err1 != nil { |
| assert.Nil(t, err1, "server.Start() error = %v", err1) |
| } |
| }() |
| time.Sleep(time.Second) |
| defer func() { |
| _ = server.Stop(context.Background()) |
| }() |
| |
| // build client with middleware |
| client, err := grpc.Dial(context.Background(), |
| grpc.WithEndpoint(endpoint.Host), |
| grpc.WithOptions(nativeGRPC.WithTransportCredentials(insecure.NewCredentials())), |
| grpc.WithMiddleware(clientMiddleware)) |
| assert.Nil(t, err, "grpc.Dial() error = %v", err) |
| assert.NotNil(t, client, "grpc.Dial() client is nil") |
| greeterClient := helloworld.NewGreeterClient(client) |
| defer func() { |
| _ = client.Close() |
| }() |
| |
| // send request |
| resp, err := greeterClient.SayHello(context.Background(), &helloworld.HelloRequest{Name: "kratos"}) |
| assert.Nil(t, err, "greeterClient.SayHello() error = %v", err) |
| assert.NotNil(t, resp, "greeterClient.SayHello() resp is nil") |
| time.Sleep(100 * time.Millisecond) |
| |
| spans := core.GetReportedSpans() |
| assert.Equal(t, 2, len(spans), "len(spans) = %d", len(spans)) |
| for _, s := range spans { |
| switch s.SpanType() { |
| case agentv3.SpanType_Entry: |
| verifyEntrySpan(t, s) |
| case agentv3.SpanType_Exit: |
| verifyExitSpan(t, endpoint, s) |
| default: |
| t.Errorf("unexpected span type: %s", s.SpanType()) |
| } |
| } |
| } |
| |
| func verifyEntrySpan(t *testing.T, span reporter.ReportedSpan) { |
| assert.Equal(t, "/helloworld.Greeter/SayHello", span.OperationName(), "entrySpan.OperationName() = %s", span.OperationName()) |
| assert.Equal(t, agentv3.SpanLayer_RPCFramework, span.SpanLayer(), "entrySpan.SpanLayer() = %s", span.SpanLayer()) |
| assert.Equal(t, 1, len(span.Refs()), "len(entrySpan.References()) = %d", len(span.Refs())) |
| assert.GreaterOrEqual(t, span.EndTime(), span.StartTime(), "exitSpan.StartTime() = %d", span.StartTime()) |
| } |
| |
| func verifyExitSpan(t *testing.T, endpoint *url.URL, span reporter.ReportedSpan) { |
| assert.Equal(t, "/helloworld.Greeter/SayHello", span.OperationName(), "exitSpan.OperationName() = %s", span.OperationName()) |
| assert.Equal(t, endpoint.Host, span.Peer(), "exitSpan.Peer() = %s", span.Peer()) |
| assert.Equal(t, agentv3.SpanLayer_RPCFramework, span.SpanLayer(), "exitSpan.SpanLayer() = %s", span.SpanLayer()) |
| assert.GreaterOrEqual(t, span.EndTime(), span.StartTime(), "exitSpan.StartTime() = %d", span.StartTime()) |
| } |