128 lines
4.4 KiB
Go
128 lines
4.4 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 cpuscraper
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import (
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"context"
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"errors"
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"runtime"
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"testing"
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"github.com/shirou/gopsutil/cpu"
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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/collector/component/componenttest"
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"go.opentelemetry.io/collector/model/pdata"
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"go.opentelemetry.io/collector/receiver/hostmetricsreceiver/internal"
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"go.opentelemetry.io/collector/receiver/hostmetricsreceiver/internal/metadata"
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"go.opentelemetry.io/collector/receiver/scrapererror"
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)
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func TestScrape(t *testing.T) {
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type testCase struct {
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name string
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bootTimeFunc func() (uint64, error)
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timesFunc func(bool) ([]cpu.TimesStat, error)
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expectedStartTime pdata.Timestamp
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initializationErr string
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expectedErr string
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}
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testCases := []testCase{
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{
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name: "Standard",
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},
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{
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name: "Validate Start Time",
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bootTimeFunc: func() (uint64, error) { return 100, nil },
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expectedStartTime: 100 * 1e9,
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},
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{
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name: "Boot Time Error",
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bootTimeFunc: func() (uint64, error) { return 0, errors.New("err1") },
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initializationErr: "err1",
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},
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{
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name: "Times Error",
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timesFunc: func(bool) ([]cpu.TimesStat, error) { return nil, errors.New("err2") },
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expectedErr: "err2",
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},
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}
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for _, test := range testCases {
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t.Run(test.name, func(t *testing.T) {
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scraper := newCPUScraper(context.Background(), &Config{})
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if test.bootTimeFunc != nil {
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scraper.bootTime = test.bootTimeFunc
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}
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if test.timesFunc != nil {
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scraper.times = test.timesFunc
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}
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err := scraper.start(context.Background(), componenttest.NewNopHost())
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if test.initializationErr != "" {
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assert.EqualError(t, err, test.initializationErr)
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return
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}
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require.NoError(t, err, "Failed to initialize cpu scraper: %v", err)
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metrics, err := scraper.scrape(context.Background())
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if test.expectedErr != "" {
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assert.EqualError(t, err, test.expectedErr)
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isPartial := scrapererror.IsPartialScrapeError(err)
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assert.True(t, isPartial)
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if isPartial {
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assert.Equal(t, 1, err.(scrapererror.PartialScrapeError).Failed)
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}
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return
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}
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require.NoError(t, err, "Failed to scrape metrics: %v", err)
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assert.Equal(t, 1, metrics.Len())
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assertCPUMetricValid(t, metrics.At(0), metadata.Metrics.SystemCPUTime.New(), test.expectedStartTime)
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if runtime.GOOS == "linux" {
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assertCPUMetricHasLinuxSpecificStateLabels(t, metrics.At(0))
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}
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internal.AssertSameTimeStampForAllMetrics(t, metrics)
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})
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}
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}
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func assertCPUMetricValid(t *testing.T, metric pdata.Metric, descriptor pdata.Metric, startTime pdata.Timestamp) {
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internal.AssertDescriptorEqual(t, descriptor, metric)
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if startTime != 0 {
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internal.AssertSumMetricStartTimeEquals(t, metric, startTime)
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}
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assert.GreaterOrEqual(t, metric.Sum().DataPoints().Len(), 4*runtime.NumCPU())
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internal.AssertSumMetricLabelExists(t, metric, 0, metadata.Labels.Cpu)
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internal.AssertSumMetricLabelHasValue(t, metric, 0, metadata.Labels.CPUState, metadata.LabelCPUState.User)
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internal.AssertSumMetricLabelHasValue(t, metric, 1, metadata.Labels.CPUState, metadata.LabelCPUState.System)
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internal.AssertSumMetricLabelHasValue(t, metric, 2, metadata.Labels.CPUState, metadata.LabelCPUState.Idle)
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internal.AssertSumMetricLabelHasValue(t, metric, 3, metadata.Labels.CPUState, metadata.LabelCPUState.Interrupt)
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}
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func assertCPUMetricHasLinuxSpecificStateLabels(t *testing.T, metric pdata.Metric) {
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internal.AssertSumMetricLabelHasValue(t, metric, 4, metadata.Labels.CPUState, metadata.LabelCPUState.Nice)
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internal.AssertSumMetricLabelHasValue(t, metric, 5, metadata.Labels.CPUState, metadata.LabelCPUState.Softirq)
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internal.AssertSumMetricLabelHasValue(t, metric, 6, metadata.Labels.CPUState, metadata.LabelCPUState.Steal)
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internal.AssertSumMetricLabelHasValue(t, metric, 7, metadata.Labels.CPUState, metadata.LabelCPUState.Wait)
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}
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