mirror of
https://github.com/open-telemetry/opentelemetry-go.git
synced 2024-12-14 10:13:10 +02:00
f995380e58
* Move `api/label` to `label` * Move `api/kv` package contents into `label` package * Unify label package name * Move `api/internal/rawhelpers.go` to `internal` * Propagate replacing `api/kv` with `label` pkg * golint * Fix over-aggressive change * Update Changelog
330 lines
9.3 KiB
Go
330 lines
9.3 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 stdout_test
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import (
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"bytes"
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"context"
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"encoding/json"
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"fmt"
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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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"github.com/stretchr/testify/require"
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"go.opentelemetry.io/otel/api/metric"
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"go.opentelemetry.io/otel/exporters/stdout"
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"go.opentelemetry.io/otel/label"
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export "go.opentelemetry.io/otel/sdk/export/metric"
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"go.opentelemetry.io/otel/sdk/export/metric/aggregation"
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"go.opentelemetry.io/otel/sdk/export/metric/metrictest"
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"go.opentelemetry.io/otel/sdk/metric/aggregator/aggregatortest"
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"go.opentelemetry.io/otel/sdk/metric/aggregator/array"
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"go.opentelemetry.io/otel/sdk/metric/aggregator/ddsketch"
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"go.opentelemetry.io/otel/sdk/metric/aggregator/lastvalue"
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"go.opentelemetry.io/otel/sdk/metric/aggregator/minmaxsumcount"
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"go.opentelemetry.io/otel/sdk/metric/aggregator/sum"
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"go.opentelemetry.io/otel/sdk/resource"
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)
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type testFixture struct {
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t *testing.T
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ctx context.Context
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exporter *stdout.Exporter
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output *bytes.Buffer
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}
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var testResource = resource.New(label.String("R", "V"))
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func newFixture(t *testing.T, opts ...stdout.Option) testFixture {
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buf := &bytes.Buffer{}
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opts = append(opts, stdout.WithWriter(buf))
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opts = append(opts, stdout.WithoutTimestamps())
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exp, err := stdout.NewExporter(opts...)
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if err != nil {
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t.Fatal("Error building fixture: ", err)
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}
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return testFixture{
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t: t,
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ctx: context.Background(),
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exporter: exp,
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output: buf,
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}
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}
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func (fix testFixture) Output() string {
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return strings.TrimSpace(fix.output.String())
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}
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func (fix testFixture) Export(checkpointSet export.CheckpointSet) {
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err := fix.exporter.Export(fix.ctx, checkpointSet)
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if err != nil {
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fix.t.Error("export failed: ", err)
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}
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}
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func TestStdoutInvalidQuantile(t *testing.T) {
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_, err := stdout.NewExporter(
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stdout.WithQuantiles([]float64{1.1, 0.9}),
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)
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require.Error(t, err, "Invalid quantile error expected")
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require.Equal(t, aggregation.ErrInvalidQuantile, err)
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}
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func TestStdoutTimestamp(t *testing.T) {
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var buf bytes.Buffer
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exporter, err := stdout.NewExporter(
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stdout.WithWriter(&buf),
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)
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if err != nil {
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t.Fatal("Invalid config: ", err)
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}
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before := time.Now()
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checkpointSet := metrictest.NewCheckpointSet(testResource)
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ctx := context.Background()
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desc := metric.NewDescriptor("test.name", metric.ValueObserverKind, metric.Int64NumberKind)
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lvagg, ckpt := metrictest.Unslice2(lastvalue.New(2))
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aggregatortest.CheckedUpdate(t, lvagg, metric.NewInt64Number(321), &desc)
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require.NoError(t, lvagg.SynchronizedMove(ckpt, &desc))
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checkpointSet.Add(&desc, ckpt)
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if err := exporter.Export(ctx, checkpointSet); err != nil {
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t.Fatal("Unexpected export error: ", err)
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}
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after := time.Now()
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var printed []interface{}
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if err := json.Unmarshal(buf.Bytes(), &printed); err != nil {
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t.Fatal("JSON parse error: ", err)
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}
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require.Len(t, printed, 1)
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lastValue, ok := printed[0].(map[string]interface{})
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require.True(t, ok, "last value format")
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require.Contains(t, lastValue, "Timestamp")
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lastValueTS := lastValue["Timestamp"].(string)
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lastValueTimestamp, err := time.Parse(time.RFC3339Nano, lastValueTS)
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if err != nil {
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t.Fatal("JSON parse error: ", lastValueTS, ": ", err)
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}
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assert.True(t, lastValueTimestamp.After(before))
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assert.True(t, lastValueTimestamp.Before(after))
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}
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func TestStdoutCounterFormat(t *testing.T) {
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fix := newFixture(t)
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checkpointSet := metrictest.NewCheckpointSet(testResource)
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desc := metric.NewDescriptor("test.name", metric.CounterKind, metric.Int64NumberKind)
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cagg, ckpt := metrictest.Unslice2(sum.New(2))
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aggregatortest.CheckedUpdate(fix.t, cagg, metric.NewInt64Number(123), &desc)
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require.NoError(t, cagg.SynchronizedMove(ckpt, &desc))
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checkpointSet.Add(&desc, ckpt, label.String("A", "B"), label.String("C", "D"))
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fix.Export(checkpointSet)
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require.Equal(t, `[{"Name":"test.name{R=V,A=B,C=D}","Sum":123}]`, fix.Output())
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}
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func TestStdoutLastValueFormat(t *testing.T) {
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fix := newFixture(t)
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checkpointSet := metrictest.NewCheckpointSet(testResource)
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desc := metric.NewDescriptor("test.name", metric.ValueObserverKind, metric.Float64NumberKind)
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lvagg, ckpt := metrictest.Unslice2(lastvalue.New(2))
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aggregatortest.CheckedUpdate(fix.t, lvagg, metric.NewFloat64Number(123.456), &desc)
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require.NoError(t, lvagg.SynchronizedMove(ckpt, &desc))
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checkpointSet.Add(&desc, ckpt, label.String("A", "B"), label.String("C", "D"))
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fix.Export(checkpointSet)
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require.Equal(t, `[{"Name":"test.name{R=V,A=B,C=D}","Last":123.456}]`, fix.Output())
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}
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func TestStdoutMinMaxSumCount(t *testing.T) {
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fix := newFixture(t)
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checkpointSet := metrictest.NewCheckpointSet(testResource)
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desc := metric.NewDescriptor("test.name", metric.ValueRecorderKind, metric.Float64NumberKind)
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magg, ckpt := metrictest.Unslice2(minmaxsumcount.New(2, &desc))
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aggregatortest.CheckedUpdate(fix.t, magg, metric.NewFloat64Number(123.456), &desc)
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aggregatortest.CheckedUpdate(fix.t, magg, metric.NewFloat64Number(876.543), &desc)
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require.NoError(t, magg.SynchronizedMove(ckpt, &desc))
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checkpointSet.Add(&desc, ckpt, label.String("A", "B"), label.String("C", "D"))
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fix.Export(checkpointSet)
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require.Equal(t, `[{"Name":"test.name{R=V,A=B,C=D}","Min":123.456,"Max":876.543,"Sum":999.999,"Count":2}]`, fix.Output())
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}
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func TestStdoutValueRecorderFormat(t *testing.T) {
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fix := newFixture(t, stdout.WithPrettyPrint())
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checkpointSet := metrictest.NewCheckpointSet(testResource)
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desc := metric.NewDescriptor("test.name", metric.ValueRecorderKind, metric.Float64NumberKind)
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aagg, ckpt := metrictest.Unslice2(array.New(2))
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for i := 0; i < 1000; i++ {
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aggregatortest.CheckedUpdate(fix.t, aagg, metric.NewFloat64Number(float64(i)+0.5), &desc)
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}
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require.NoError(t, aagg.SynchronizedMove(ckpt, &desc))
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checkpointSet.Add(&desc, ckpt, label.String("A", "B"), label.String("C", "D"))
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fix.Export(checkpointSet)
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require.Equal(t, `[
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{
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"Name": "test.name{R=V,A=B,C=D}",
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"Min": 0.5,
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"Max": 999.5,
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"Sum": 500000,
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"Count": 1000,
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"Quantiles": [
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{
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"Quantile": 0.5,
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"Value": 500.5
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},
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{
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"Quantile": 0.9,
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"Value": 900.5
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},
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{
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"Quantile": 0.99,
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"Value": 990.5
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}
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]
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}
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]`, fix.Output())
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}
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func TestStdoutNoData(t *testing.T) {
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desc := metric.NewDescriptor("test.name", metric.ValueRecorderKind, metric.Float64NumberKind)
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runTwoAggs := func(agg, ckpt export.Aggregator) {
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t.Run(fmt.Sprintf("%T", agg), func(t *testing.T) {
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t.Parallel()
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fix := newFixture(t)
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checkpointSet := metrictest.NewCheckpointSet(testResource)
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require.NoError(t, agg.SynchronizedMove(ckpt, &desc))
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checkpointSet.Add(&desc, ckpt)
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fix.Export(checkpointSet)
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require.Equal(t, "", fix.Output())
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})
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}
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runTwoAggs(metrictest.Unslice2(ddsketch.New(2, &desc, ddsketch.NewDefaultConfig())))
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runTwoAggs(metrictest.Unslice2(minmaxsumcount.New(2, &desc)))
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}
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func TestStdoutLastValueNotSet(t *testing.T) {
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fix := newFixture(t)
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checkpointSet := metrictest.NewCheckpointSet(testResource)
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desc := metric.NewDescriptor("test.name", metric.ValueObserverKind, metric.Float64NumberKind)
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lvagg, ckpt := metrictest.Unslice2(lastvalue.New(2))
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require.NoError(t, lvagg.SynchronizedMove(ckpt, &desc))
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checkpointSet.Add(&desc, lvagg, label.String("A", "B"), label.String("C", "D"))
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fix.Export(checkpointSet)
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require.Equal(t, "", fix.Output())
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}
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func TestStdoutResource(t *testing.T) {
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type testCase struct {
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expect string
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res *resource.Resource
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attrs []label.KeyValue
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}
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newCase := func(expect string, res *resource.Resource, attrs ...label.KeyValue) testCase {
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return testCase{
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expect: expect,
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res: res,
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attrs: attrs,
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}
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}
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testCases := []testCase{
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newCase("R1=V1,R2=V2,A=B,C=D",
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resource.New(label.String("R1", "V1"), label.String("R2", "V2")),
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label.String("A", "B"),
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label.String("C", "D")),
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newCase("R1=V1,R2=V2",
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resource.New(label.String("R1", "V1"), label.String("R2", "V2")),
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),
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newCase("A=B,C=D",
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nil,
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label.String("A", "B"),
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label.String("C", "D"),
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),
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// We explicitly do not de-duplicate between resources
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// and metric labels in this exporter.
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newCase("R1=V1,R2=V2,R1=V3,R2=V4",
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resource.New(label.String("R1", "V1"), label.String("R2", "V2")),
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label.String("R1", "V3"),
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label.String("R2", "V4")),
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}
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for _, tc := range testCases {
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fix := newFixture(t)
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checkpointSet := metrictest.NewCheckpointSet(tc.res)
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desc := metric.NewDescriptor("test.name", metric.ValueObserverKind, metric.Float64NumberKind)
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lvagg, ckpt := metrictest.Unslice2(lastvalue.New(2))
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aggregatortest.CheckedUpdate(fix.t, lvagg, metric.NewFloat64Number(123.456), &desc)
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require.NoError(t, lvagg.SynchronizedMove(ckpt, &desc))
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checkpointSet.Add(&desc, ckpt, tc.attrs...)
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fix.Export(checkpointSet)
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require.Equal(t, `[{"Name":"test.name{`+tc.expect+`}","Last":123.456}]`, fix.Output())
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}
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}
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