|
| 1 | +package tracing |
| 2 | + |
| 3 | +import ( |
| 4 | + "context" |
| 5 | + "encoding/json" |
| 6 | + "errors" |
| 7 | + "fmt" |
| 8 | + "os" |
| 9 | + "testing" |
| 10 | + "time" |
| 11 | + |
| 12 | + "github.com/linkerd/linkerd2/testutil" |
| 13 | +) |
| 14 | + |
| 15 | +type ( |
| 16 | + traces struct { |
| 17 | + Data []trace `json:"data"` |
| 18 | + } |
| 19 | + |
| 20 | + trace struct { |
| 21 | + Processes map[string]process `json:"processes"` |
| 22 | + } |
| 23 | + |
| 24 | + process struct { |
| 25 | + ServiceName string `json:"serviceName"` |
| 26 | + } |
| 27 | +) |
| 28 | + |
| 29 | +////////////////////// |
| 30 | +/// TEST SETUP /// |
| 31 | +////////////////////// |
| 32 | + |
| 33 | +var TestHelper *testutil.TestHelper |
| 34 | + |
| 35 | +func TestMain(m *testing.M) { |
| 36 | + TestHelper = testutil.NewTestHelper() |
| 37 | + // Block test execution until viz extension is running |
| 38 | + TestHelper.WaitUntilDeployReady(testutil.LinkerdDeployReplicasEdge) |
| 39 | + os.Exit(m.Run()) |
| 40 | +} |
| 41 | + |
| 42 | +////////////////////// |
| 43 | +/// TEST EXECUTION /// |
| 44 | +////////////////////// |
| 45 | + |
| 46 | +func TestTracing(t *testing.T) { |
| 47 | + ctx := context.Background() |
| 48 | + |
| 49 | + tracingNs := "tracing" |
| 50 | + installTracing(t, tracingNs) |
| 51 | + |
| 52 | + TestHelper.WithDataPlaneNamespace(ctx, "tracing-test", map[string]string{}, t, func(t *testing.T, namespace string) { |
| 53 | + emojivotoYaml, err := testutil.ReadFile("testdata/emojivoto.yaml") |
| 54 | + if err != nil { |
| 55 | + testutil.AnnotatedFatalf(t, "failed to read emojivoto yaml", |
| 56 | + "failed to read emojivoto yaml\n%s\n", err) |
| 57 | + } |
| 58 | + |
| 59 | + out, err := TestHelper.KubectlApply(emojivotoYaml, namespace) |
| 60 | + if err != nil { |
| 61 | + testutil.AnnotatedFatalf(t, "'kubectl apply' command failed", |
| 62 | + "'kubectl apply' command failed\n%s", out) |
| 63 | + } |
| 64 | + |
| 65 | + // wait for deployments to start |
| 66 | + for _, deploy := range []struct { |
| 67 | + ns string |
| 68 | + name string |
| 69 | + }{ |
| 70 | + {ns: namespace, name: "vote-bot"}, |
| 71 | + {ns: namespace, name: "web"}, |
| 72 | + {ns: namespace, name: "emoji"}, |
| 73 | + {ns: namespace, name: "voting"}, |
| 74 | + {ns: tracingNs, name: "otel-collector-opentelemetry-collector"}, |
| 75 | + {ns: tracingNs, name: "jaeger"}, |
| 76 | + } { |
| 77 | + if err := TestHelper.CheckPods(ctx, deploy.ns, deploy.name, 1); err != nil { |
| 78 | + var rce *testutil.RestartCountError |
| 79 | + if errors.As(err, &rce) { |
| 80 | + testutil.AnnotatedWarn(t, "CheckPods timed-out", rce) |
| 81 | + } |
| 82 | + } |
| 83 | + } |
| 84 | + |
| 85 | + t.Run("expect full trace", func(t *testing.T) { |
| 86 | + timeout := 1 * time.Minute |
| 87 | + err = testutil.RetryFor(timeout, func() error { |
| 88 | + url, err := TestHelper.URLFor(ctx, tracingNs, "jaeger", 16686) |
| 89 | + if err != nil { |
| 90 | + return err |
| 91 | + } |
| 92 | + |
| 93 | + tracesJSON, err := TestHelper.HTTPGetURL(url + "/api/traces?lookback=1h&service=linkerd-proxy") |
| 94 | + if err != nil { |
| 95 | + return err |
| 96 | + } |
| 97 | + traces := traces{} |
| 98 | + |
| 99 | + err = json.Unmarshal([]byte(tracesJSON), &traces) |
| 100 | + if err != nil { |
| 101 | + return err |
| 102 | + } |
| 103 | + |
| 104 | + if !hasTraceWithProcess(&traces, "linkerd-proxy") { |
| 105 | + return noProxyTraceFound{} |
| 106 | + } |
| 107 | + return nil |
| 108 | + }) |
| 109 | + if err != nil { |
| 110 | + testutil.AnnotatedFatal(t, fmt.Sprintf("timed-out checking trace (%s)", timeout), err) |
| 111 | + } |
| 112 | + }) |
| 113 | + }) |
| 114 | +} |
| 115 | + |
| 116 | +func installTracing(t *testing.T, namespace string) { |
| 117 | + tracingYaml, err := testutil.ReadFile("testdata/tracing.yaml") |
| 118 | + if err != nil { |
| 119 | + testutil.AnnotatedFatalf(t, "failed to read tracing yaml", |
| 120 | + "failed to read emojivoto yaml\n%s\n", err) |
| 121 | + } |
| 122 | + |
| 123 | + out, err := TestHelper.KubectlApply(tracingYaml, namespace) |
| 124 | + if err != nil { |
| 125 | + testutil.AnnotatedFatalf(t, "'kubectl apply' command failed", |
| 126 | + "'kubectl apply' command failed\n%s", out) |
| 127 | + } |
| 128 | + |
| 129 | + stdout, stderr, err := TestHelper.HelmRun("repo", "add", "jaegertracing", "https://jaegertracing.github.io/helm-charts") |
| 130 | + if err != nil { |
| 131 | + testutil.AnnotatedFatalf(t, "failed to add jaeger repository", "failed to add jaeger repository\n%s\n------\n%s\n", stdout, stderr) |
| 132 | + } |
| 133 | + stdout, stderr, err = TestHelper.HelmRun("repo", "add", "open-telemetry", "https://open-telemetry.github.io/opentelemetry-helm-charts") |
| 134 | + if err != nil { |
| 135 | + testutil.AnnotatedFatalf(t, "failed to add OpenTelemetry repository", "failed to add OpenTelemetry repository\n%s\n------\n%s\n", stdout, stderr) |
| 136 | + } |
| 137 | + stdout, stderr, err = TestHelper.HelmRun("install", "jaeger", "jaegertracing/jaeger", "--namespace=tracing", "--values=testdata/jaeger-aio-values.yaml") |
| 138 | + if err != nil { |
| 139 | + testutil.AnnotatedFatalf(t, "failed to install jaeger", "failed to install jaeger\n%s\n------\n%s\n", stdout, stderr) |
| 140 | + } |
| 141 | + stdout, stderr, err = TestHelper.HelmRun("install", "otel-collector", "open-telemetry/opentelemetry-collector", "--namespace=tracing", "--values=testdata/otel-values.yaml") |
| 142 | + if err != nil { |
| 143 | + testutil.AnnotatedFatalf(t, "failed to install OpenTelemetry", "failed to install OpenTelemetry\n%s\n------\n%s\n", stdout, stderr) |
| 144 | + } |
| 145 | +} |
| 146 | + |
| 147 | +func hasTraceWithProcess(traces *traces, ps string) bool { |
| 148 | + for _, trace := range traces.Data { |
| 149 | + for _, process := range trace.Processes { |
| 150 | + if process.ServiceName == ps { |
| 151 | + return true |
| 152 | + } |
| 153 | + } |
| 154 | + } |
| 155 | + return false |
| 156 | +} |
| 157 | + |
| 158 | +type noProxyTraceFound struct{} |
| 159 | + |
| 160 | +func (e noProxyTraceFound) Error() string { |
| 161 | + return "no trace found with processes: linkerd-proxy" |
| 162 | +} |
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