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| 1 | +// Copyright 2019 The OpenZipkin Authors |
| 2 | +// |
| 3 | +// Licensed under the Apache License, Version 2.0 (the "License"); |
| 4 | +// you may not use this file except in compliance with the License. |
| 5 | +// You may obtain a copy of the License at |
| 6 | +// |
| 7 | +// http://www.apache.org/licenses/LICENSE-2.0 |
| 8 | +// |
| 9 | +// Unless required by applicable law or agreed to in writing, software |
| 10 | +// distributed under the License is distributed on an "AS IS" BASIS, |
| 11 | +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 12 | +// See the License for the specific language governing permissions and |
| 13 | +// limitations under the License. |
| 14 | + |
| 15 | +package grpc_test |
| 16 | + |
| 17 | +import ( |
| 18 | + "context" |
| 19 | + "testing" |
| 20 | + |
| 21 | + "google.golang.org/grpc" |
| 22 | + "google.golang.org/grpc/metadata" |
| 23 | + "google.golang.org/grpc/stats" |
| 24 | + |
| 25 | + "github.com/openzipkin/zipkin-go" |
| 26 | + zipkingrpc "github.com/openzipkin/zipkin-go/middleware/grpc" |
| 27 | + "github.com/openzipkin/zipkin-go/model" |
| 28 | + service "github.com/openzipkin/zipkin-go/proto/testing" |
| 29 | +) |
| 30 | + |
| 31 | +func TestGRPCServerCreatesASpanAndContext(t *testing.T) { |
| 32 | + tracer, flusher := createTracer(false) |
| 33 | + |
| 34 | + s := grpc.NewServer( |
| 35 | + grpc.StatsHandler( |
| 36 | + zipkingrpc.NewServerHandler( |
| 37 | + tracer, |
| 38 | + zipkingrpc.ServerTags(map[string]string{"default": "tag"}), |
| 39 | + ), |
| 40 | + ), |
| 41 | + ) |
| 42 | + defer s.Stop() |
| 43 | + |
| 44 | + service.RegisterHelloServiceServer(s, &TestHelloService{}) |
| 45 | + |
| 46 | + dialer := initListener(s) |
| 47 | + |
| 48 | + ctx := context.Background() |
| 49 | + conn, err := grpc.DialContext( |
| 50 | + ctx, |
| 51 | + "bufnet", |
| 52 | + grpc.WithContextDialer(dialer), |
| 53 | + grpc.WithInsecure(), |
| 54 | + ) |
| 55 | + if err != nil { |
| 56 | + t.Fatalf("Failed to dial bufnet: %v", err) |
| 57 | + } |
| 58 | + defer conn.Close() |
| 59 | + |
| 60 | + client := service.NewHelloServiceClient(conn) |
| 61 | + |
| 62 | + _, err = client.Hello(ctx, &service.HelloRequest{ |
| 63 | + Payload: "Hello", |
| 64 | + }) |
| 65 | + if err != nil { |
| 66 | + t.Fatalf("unexpected error: %v", err) |
| 67 | + } |
| 68 | + |
| 69 | + spans := flusher() |
| 70 | + if want, have := 1, len(spans); want != have { |
| 71 | + t.Errorf("unexpected number of spans, want %d, have %d", want, have) |
| 72 | + } |
| 73 | + |
| 74 | + span := spans[0] |
| 75 | + if want, have := model.Server, span.Kind; want != have { |
| 76 | + t.Errorf("unexpected kind, want %q, have %q", want, have) |
| 77 | + } |
| 78 | +} |
| 79 | + |
| 80 | +func TestGRPCServerCanAccessToHeaders(t *testing.T) { |
| 81 | + tracer, flusher := createTracer(false) |
| 82 | + |
| 83 | + s := grpc.NewServer( |
| 84 | + grpc.StatsHandler( |
| 85 | + zipkingrpc.NewServerHandler( |
| 86 | + tracer, |
| 87 | + zipkingrpc.ServerTags(map[string]string{"default": "tag"}), |
| 88 | + zipkingrpc.WithServerInHeaderParser(func(inHeader *stats.InHeader, span zipkin.Span) { |
| 89 | + if want, have := "test_value", inHeader.Header.Get("test_key")[0]; want != have { |
| 90 | + t.Errorf("unexpected metadata value in header, want: %q, have %q", want, have) |
| 91 | + } |
| 92 | + }), |
| 93 | + zipkingrpc.WithServerInTrailerParser(func(inTrailer *stats.InTrailer, span zipkin.Span) { |
| 94 | + if want, have := "test_value", inTrailer.Trailer.Get("test_key")[0]; want != have { |
| 95 | + t.Errorf("unexpected metadata value in header, want: %q, have %q", want, have) |
| 96 | + } |
| 97 | + }), |
| 98 | + ), |
| 99 | + ), |
| 100 | + ) |
| 101 | + defer s.Stop() |
| 102 | + |
| 103 | + service.RegisterHelloServiceServer(s, &TestHelloService{}) |
| 104 | + |
| 105 | + dialer := initListener(s) |
| 106 | + |
| 107 | + ctx := context.Background() |
| 108 | + conn, err := grpc.DialContext( |
| 109 | + ctx, |
| 110 | + "bufnet", |
| 111 | + grpc.WithContextDialer(dialer), |
| 112 | + grpc.WithInsecure(), |
| 113 | + ) |
| 114 | + if err != nil { |
| 115 | + t.Fatalf("Failed to dial bufnet: %v", err) |
| 116 | + } |
| 117 | + defer conn.Close() |
| 118 | + |
| 119 | + client := service.NewHelloServiceClient(conn) |
| 120 | + |
| 121 | + ctx = metadata.AppendToOutgoingContext(ctx, "test_key", "test_value") |
| 122 | + _, err = client.Hello(ctx, &service.HelloRequest{ |
| 123 | + Payload: "Hello", |
| 124 | + }) |
| 125 | + if err != nil { |
| 126 | + t.Fatalf("unexpected error: %v", err) |
| 127 | + } |
| 128 | + |
| 129 | + spans := flusher() |
| 130 | + if want, have := 1, len(spans); want != have { |
| 131 | + t.Errorf("unexpected number of spans, want %d, have %d", want, have) |
| 132 | + } |
| 133 | + |
| 134 | + span := spans[0] |
| 135 | + if want, have := model.Server, span.Kind; want != have { |
| 136 | + t.Errorf("unexpected kind, want %q, have %q", want, have) |
| 137 | + } |
| 138 | +} |
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