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101 lines
3.9 KiB
101 lines
3.9 KiB
// Copyright 2017 The Prometheus Authors
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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 stats
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import (
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"encoding/json"
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"testing"
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"time"
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"github.com/grafana/regexp"
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"github.com/prometheus/client_golang/prometheus"
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"github.com/stretchr/testify/require"
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"github.com/prometheus/prometheus/util/testutil"
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)
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func TestTimerGroupNewTimer(t *testing.T) {
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tg := NewTimerGroup()
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timer := tg.GetTimer(ExecTotalTime)
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duration := timer.Duration()
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require.Equal(t, 0.0, duration, "Expected duration equal 0")
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minimum := 2 * time.Millisecond
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timer.Start()
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time.Sleep(minimum)
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timer.Stop()
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duration = timer.Duration()
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require.Greater(t, duration, 0.0, "Expected duration greater than 0")
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elapsed := timer.ElapsedTime()
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require.GreaterOrEqual(t, elapsed, minimum,
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"Expected elapsed time to be greater than time slept.")
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}
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func TestQueryStatsWithTimersAndSamples(t *testing.T) {
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qt := NewQueryTimers()
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qs := NewQuerySamples(true)
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qs.InitStepTracking(20001000, 25001000, 1000000)
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timer := qt.GetTimer(ExecTotalTime)
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timer.Start()
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time.Sleep(2 * time.Millisecond)
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timer.Stop()
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qs.IncrementSamplesAtTimestamp(20001000, 5)
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qs.IncrementSamplesAtTimestamp(25001000, 5)
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qstats := NewQueryStats(&Statistics{Timers: qt, Samples: qs})
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actual, err := json.Marshal(qstats)
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require.NoError(t, err, "unexpected error during serialization")
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// Timing value is one of multiple fields, unit is seconds (float).
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match, err := regexp.MatchString(`[,{]"execTotalTime":\d+\.\d+[,}]`, string(actual))
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require.NoError(t, err, "unexpected error while matching string")
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require.True(t, match, "Expected timings with one non-zero entry.")
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require.Regexpf(t, `[,{]"totalQueryableSamples":10[,}]`, string(actual), "expected totalQueryableSamples")
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require.Regexpf(t, `[,{]"totalQueryableSamplesPerStep":\[\[20001,5\],\[21001,0\],\[22001,0\],\[23001,0\],\[24001,0\],\[25001,5\]\]`, string(actual), "expected totalQueryableSamplesPerStep")
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}
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func TestQueryStatsWithSpanTimers(t *testing.T) {
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qt := NewQueryTimers()
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qs := NewQuerySamples(false)
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ctx := &testutil.MockContext{DoneCh: make(chan struct{})}
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qst, _ := qt.GetSpanTimer(ctx, ExecQueueTime, prometheus.NewSummary(prometheus.SummaryOpts{}))
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time.Sleep(5 * time.Millisecond)
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qst.Finish()
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qstats := NewQueryStats(&Statistics{Timers: qt, Samples: qs})
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actual, err := json.Marshal(qstats)
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require.NoError(t, err, "unexpected error during serialization")
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// Timing value is one of multiple fields, unit is seconds (float).
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match, err := regexp.MatchString(`[,{]"execQueueTime":\d+\.\d+[,}]`, string(actual))
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require.NoError(t, err, "unexpected error while matching string")
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require.True(t, match, "Expected timings with one non-zero entry.")
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}
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func TestTimerGroup(t *testing.T) {
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tg := NewTimerGroup()
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require.Equal(t, "Exec total time: 0s", tg.GetTimer(ExecTotalTime).String())
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require.Equal(t, "Exec queue wait time: 0s", tg.GetTimer(ExecQueueTime).String())
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require.Equal(t, "Inner eval time: 0s", tg.GetTimer(InnerEvalTime).String())
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require.Equal(t, "Query preparation time: 0s", tg.GetTimer(QueryPreparationTime).String())
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require.Equal(t, "Result sorting time: 0s", tg.GetTimer(ResultSortTime).String())
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require.Equal(t, "Eval total time: 0s", tg.GetTimer(EvalTotalTime).String())
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actual := tg.String()
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expected := "Exec total time: 0s\nExec queue wait time: 0s\nInner eval time: 0s\nQuery preparation time: 0s\nResult sorting time: 0s\nEval total time: 0s\n"
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require.Equal(t, expected, actual)
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}
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