mirror of
https://github.com/open-telemetry/opentelemetry-go.git
synced 2024-12-12 10:04:29 +02:00
398 lines
12 KiB
Go
398 lines
12 KiB
Go
// Copyright The OpenTelemetry Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package otlp_test
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import (
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"context"
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"fmt"
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"net"
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"strings"
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"testing"
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"time"
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"github.com/stretchr/testify/assert"
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metricpb "github.com/open-telemetry/opentelemetry-proto/gen/go/metrics/v1"
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"go.opentelemetry.io/otel/api/kv"
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"go.opentelemetry.io/otel/api/metric"
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metricapi "go.opentelemetry.io/otel/api/metric"
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"go.opentelemetry.io/otel/exporters/otlp"
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exporttrace "go.opentelemetry.io/otel/sdk/export/trace"
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"go.opentelemetry.io/otel/sdk/metric/controller/push"
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integrator "go.opentelemetry.io/otel/sdk/metric/integrator/simple"
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"go.opentelemetry.io/otel/sdk/metric/selector/simple"
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sdktrace "go.opentelemetry.io/otel/sdk/trace"
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)
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func TestNewExporter_endToEnd(t *testing.T) {
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tests := []struct {
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name string
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additionalOpts []otlp.ExporterOption
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}{
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{
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name: "StandardExporter",
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},
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}
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for _, test := range tests {
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t.Run(test.name, func(t *testing.T) {
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newExporterEndToEndTest(t, test.additionalOpts)
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})
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}
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}
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func newExporterEndToEndTest(t *testing.T, additionalOpts []otlp.ExporterOption) {
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mc := runMockColAtAddr(t, "localhost:56561")
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defer func() {
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_ = mc.stop()
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}()
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<-time.After(5 * time.Millisecond)
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opts := []otlp.ExporterOption{
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otlp.WithInsecure(),
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otlp.WithAddress(mc.address),
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otlp.WithReconnectionPeriod(50 * time.Millisecond),
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}
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opts = append(opts, additionalOpts...)
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exp, err := otlp.NewExporter(opts...)
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if err != nil {
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t.Fatalf("failed to create a new collector exporter: %v", err)
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}
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defer func() {
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_ = exp.Stop()
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}()
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pOpts := []sdktrace.ProviderOption{
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sdktrace.WithConfig(sdktrace.Config{DefaultSampler: sdktrace.AlwaysSample()}),
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sdktrace.WithBatcher(exp, // add following two options to ensure flush
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sdktrace.WithScheduleDelayMillis(15),
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sdktrace.WithMaxExportBatchSize(10),
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),
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}
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tp1, err := sdktrace.NewProvider(append(pOpts,
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sdktrace.WithResourceAttributes(kv.String("rk1", "rv11)"),
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kv.Int64("rk2", 5)))...)
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assert.NoError(t, err)
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tp2, err := sdktrace.NewProvider(append(pOpts,
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sdktrace.WithResourceAttributes(kv.String("rk1", "rv12)"),
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kv.Float32("rk3", 6.5)))...)
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assert.NoError(t, err)
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tr1 := tp1.Tracer("test-tracer1")
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tr2 := tp2.Tracer("test-tracer2")
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// Now create few spans
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m := 4
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for i := 0; i < m; i++ {
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_, span := tr1.Start(context.Background(), "AlwaysSample")
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span.SetAttributes(kv.Int64("i", int64(i)))
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span.End()
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_, span = tr2.Start(context.Background(), "AlwaysSample")
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span.SetAttributes(kv.Int64("i", int64(i)))
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span.End()
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}
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selector := simple.NewWithExactDistribution()
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integrator := integrator.New(selector, true)
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pusher := push.New(integrator, exp, 60*time.Second)
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pusher.Start()
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ctx := context.Background()
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meter := pusher.Meter("test-meter")
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labels := []kv.KeyValue{kv.Bool("test", true)}
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type data struct {
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iKind metric.Kind
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nKind metricapi.NumberKind
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val int64
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}
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instruments := map[string]data{
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"test-int64-counter": {metric.CounterKind, metricapi.Int64NumberKind, 1},
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"test-float64-counter": {metric.CounterKind, metricapi.Float64NumberKind, 1},
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"test-int64-valuerecorder": {metric.ValueRecorderKind, metricapi.Int64NumberKind, 2},
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"test-float64-valuerecorder": {metric.ValueRecorderKind, metricapi.Float64NumberKind, 2},
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"test-int64-observer": {metric.ObserverKind, metricapi.Int64NumberKind, 3},
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"test-float64-observer": {metric.ObserverKind, metricapi.Float64NumberKind, 3},
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}
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for name, data := range instruments {
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switch data.iKind {
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case metric.CounterKind:
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switch data.nKind {
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case metricapi.Int64NumberKind:
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metricapi.Must(meter).NewInt64Counter(name).Add(ctx, data.val, labels...)
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case metricapi.Float64NumberKind:
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metricapi.Must(meter).NewFloat64Counter(name).Add(ctx, float64(data.val), labels...)
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default:
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assert.Failf(t, "unsupported number testing kind", data.nKind.String())
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}
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case metric.ValueRecorderKind:
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switch data.nKind {
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case metricapi.Int64NumberKind:
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metricapi.Must(meter).NewInt64ValueRecorder(name).Record(ctx, data.val, labels...)
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case metricapi.Float64NumberKind:
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metricapi.Must(meter).NewFloat64ValueRecorder(name).Record(ctx, float64(data.val), labels...)
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default:
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assert.Failf(t, "unsupported number testing kind", data.nKind.String())
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}
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case metric.ObserverKind:
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switch data.nKind {
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case metricapi.Int64NumberKind:
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callback := func(v int64) metricapi.Int64ObserverCallback {
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return metricapi.Int64ObserverCallback(func(result metricapi.Int64ObserverResult) { result.Observe(v, labels...) })
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}(data.val)
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metricapi.Must(meter).RegisterInt64Observer(name, callback)
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case metricapi.Float64NumberKind:
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callback := func(v float64) metricapi.Float64ObserverCallback {
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return metricapi.Float64ObserverCallback(func(result metricapi.Float64ObserverResult) { result.Observe(v, labels...) })
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}(float64(data.val))
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metricapi.Must(meter).RegisterFloat64Observer(name, callback)
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default:
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assert.Failf(t, "unsupported number testing kind", data.nKind.String())
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}
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default:
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assert.Failf(t, "unsupported metrics testing kind", data.iKind.String())
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}
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}
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// Flush and close.
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pusher.Stop()
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// Wait >2 cycles.
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<-time.After(40 * time.Millisecond)
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// Now shutdown the exporter
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if err := exp.Stop(); err != nil {
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t.Fatalf("failed to stop the exporter: %v", err)
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}
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// Shutdown the collector too so that we can begin
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// verification checks of expected data back.
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_ = mc.stop()
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// Now verify that we only got two resources
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rss := mc.getResourceSpans()
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if got, want := len(rss), 2; got != want {
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t.Fatalf("resource span count: got %d, want %d\n", got, want)
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}
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// Now verify spans and attributes for each resource span.
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for _, rs := range rss {
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if len(rs.InstrumentationLibrarySpans) == 0 {
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t.Fatalf("zero Instrumentation Library Spans")
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}
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if got, want := len(rs.InstrumentationLibrarySpans[0].Spans), m; got != want {
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t.Fatalf("span counts: got %d, want %d", got, want)
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}
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attrMap := map[int64]bool{}
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for _, s := range rs.InstrumentationLibrarySpans[0].Spans {
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if gotName, want := s.Name, "AlwaysSample"; gotName != want {
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t.Fatalf("span name: got %s, want %s", gotName, want)
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}
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attrMap[s.Attributes[0].IntValue] = true
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}
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if got, want := len(attrMap), m; got != want {
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t.Fatalf("span attribute unique values: got %d want %d", got, want)
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}
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for i := 0; i < m; i++ {
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_, ok := attrMap[int64(i)]
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if !ok {
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t.Fatalf("span with attribute %d missing", i)
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}
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}
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}
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metrics := mc.getMetrics()
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assert.Len(t, metrics, len(instruments), "not enough metrics exported")
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seen := make(map[string]struct{}, len(instruments))
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for _, m := range metrics {
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desc := m.GetMetricDescriptor()
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data, ok := instruments[desc.Name]
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if !ok {
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assert.Failf(t, "unknown metrics", desc.Name)
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continue
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}
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seen[desc.Name] = struct{}{}
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switch data.iKind {
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case metric.CounterKind:
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switch data.nKind {
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case metricapi.Int64NumberKind:
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assert.Equal(t, metricpb.MetricDescriptor_COUNTER_INT64.String(), desc.GetType().String())
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if dp := m.GetInt64DataPoints(); assert.Len(t, dp, 1) {
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assert.Equal(t, data.val, dp[0].Value, "invalid value for %q", desc.Name)
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}
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case metricapi.Float64NumberKind:
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assert.Equal(t, metricpb.MetricDescriptor_COUNTER_DOUBLE.String(), desc.GetType().String())
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if dp := m.GetDoubleDataPoints(); assert.Len(t, dp, 1) {
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assert.Equal(t, float64(data.val), dp[0].Value, "invalid value for %q", desc.Name)
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}
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default:
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assert.Failf(t, "invalid number kind", data.nKind.String())
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}
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case metric.ValueRecorderKind, metric.ObserverKind:
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assert.Equal(t, metricpb.MetricDescriptor_SUMMARY.String(), desc.GetType().String())
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m.GetSummaryDataPoints()
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if dp := m.GetSummaryDataPoints(); assert.Len(t, dp, 1) {
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count := dp[0].Count
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assert.Equal(t, uint64(1), count, "invalid count for %q", desc.Name)
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assert.Equal(t, float64(data.val*int64(count)), dp[0].Sum, "invalid sum for %q (value %d)", desc.Name, data.val)
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}
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default:
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assert.Failf(t, "invalid metrics kind", data.iKind.String())
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}
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}
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for i := range instruments {
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if _, ok := seen[i]; !ok {
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assert.Fail(t, fmt.Sprintf("no metric(s) exported for %q", i))
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}
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}
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}
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func TestNewExporter_invokeStartThenStopManyTimes(t *testing.T) {
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mc := runMockCol(t)
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defer func() {
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_ = mc.stop()
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}()
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exp, err := otlp.NewExporter(otlp.WithInsecure(),
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otlp.WithReconnectionPeriod(50*time.Millisecond),
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otlp.WithAddress(mc.address))
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if err != nil {
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t.Fatalf("error creating exporter: %v", err)
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}
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defer func() {
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_ = exp.Stop()
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}()
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// Invoke Start numerous times, should return errAlreadyStarted
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for i := 0; i < 10; i++ {
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if err := exp.Start(); err == nil || !strings.Contains(err.Error(), "already started") {
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t.Fatalf("#%d unexpected Start error: %v", i, err)
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}
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}
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_ = exp.Stop()
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// Invoke Stop numerous times
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for i := 0; i < 10; i++ {
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if err := exp.Stop(); err != nil {
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t.Fatalf(`#%d got error (%v) expected none`, i, err)
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}
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}
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}
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func TestNewExporter_collectorConnectionDiesThenReconnects(t *testing.T) {
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mc := runMockCol(t)
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reconnectionPeriod := 20 * time.Millisecond
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exp, err := otlp.NewExporter(otlp.WithInsecure(),
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otlp.WithAddress(mc.address),
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otlp.WithReconnectionPeriod(reconnectionPeriod))
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if err != nil {
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t.Fatalf("Unexpected error: %v", err)
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}
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defer func() {
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_ = exp.Stop()
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}()
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// We'll now stop the collector right away to simulate a connection
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// dying in the midst of communication or even not existing before.
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_ = mc.stop()
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// In the test below, we'll stop the collector many times,
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// while exporting traces and test to ensure that we can
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// reconnect.
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for j := 0; j < 3; j++ {
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exp.ExportSpans(context.Background(), []*exporttrace.SpanData{{Name: "in the midst"}})
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// Now resurrect the collector by making a new one but reusing the
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// old address, and the collector should reconnect automatically.
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nmc := runMockColAtAddr(t, mc.address)
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// Give the exporter sometime to reconnect
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<-time.After(reconnectionPeriod * 4)
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n := 10
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for i := 0; i < n; i++ {
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exp.ExportSpans(context.Background(), []*exporttrace.SpanData{{Name: "Resurrected"}})
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}
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nmaSpans := nmc.getSpans()
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// Expecting 10 spanData that were sampled, given that
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if g, w := len(nmaSpans), n; g != w {
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t.Fatalf("Round #%d: Connected collector: spans: got %d want %d", j, g, w)
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}
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dSpans := mc.getSpans()
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// Expecting 0 spans to have been received by the original but now dead collector
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if g, w := len(dSpans), 0; g != w {
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t.Fatalf("Round #%d: Disconnected collector: spans: got %d want %d", j, g, w)
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}
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_ = nmc.stop()
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}
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}
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// This test takes a long time to run: to skip it, run tests using: -short
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func TestNewExporter_collectorOnBadConnection(t *testing.T) {
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if testing.Short() {
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t.Skipf("Skipping this long running test")
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}
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ln, err := net.Listen("tcp", "localhost:0")
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if err != nil {
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t.Fatalf("Failed to grab an available port: %v", err)
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}
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// Firstly close the "collector's" channel: optimistically this address won't get reused ASAP
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// However, our goal of closing it is to simulate an unavailable connection
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_ = ln.Close()
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_, collectorPortStr, _ := net.SplitHostPort(ln.Addr().String())
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address := fmt.Sprintf("localhost:%s", collectorPortStr)
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exp, err := otlp.NewExporter(otlp.WithInsecure(),
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otlp.WithReconnectionPeriod(50*time.Millisecond),
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otlp.WithAddress(address))
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if err != nil {
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t.Fatalf("Despite an indefinite background reconnection, got error: %v", err)
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}
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_ = exp.Stop()
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}
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func TestNewExporter_withAddress(t *testing.T) {
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mc := runMockCol(t)
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defer func() {
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_ = mc.stop()
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}()
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exp := otlp.NewUnstartedExporter(
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otlp.WithInsecure(),
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otlp.WithReconnectionPeriod(50*time.Millisecond),
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otlp.WithAddress(mc.address))
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defer func() {
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_ = exp.Stop()
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}()
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if err := exp.Start(); err != nil {
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t.Fatalf("Unexpected Start error: %v", err)
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}
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}
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