7c23ba1b34
PrettyPrintJSON is most used e2emetrics function and that doesn't seem specific for metrics. The implementation itself is generic, so it is nice to move it to core framework for avoiding circular dependency.
129 lines
3.6 KiB
Go
129 lines
3.6 KiB
Go
/*
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Copyright 2017 The Kubernetes 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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http://www.apache.org/licenses/LICENSE-2.0
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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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*/
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package timer
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import (
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"time"
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"bytes"
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"fmt"
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"k8s.io/kubernetes/test/e2e/framework"
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"k8s.io/kubernetes/test/e2e/perftype"
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"sync"
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)
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var now = time.Now
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// Phase represents a phase of a test. Phases can overlap.
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type Phase struct {
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sequenceNumber int
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name string
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startTime time.Time
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endTime time.Time
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}
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func (phase *Phase) ended() bool {
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return !phase.endTime.IsZero()
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}
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// End marks the phase as ended, unless it had already been ended before.
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func (phase *Phase) End() {
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if !phase.ended() {
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phase.endTime = now()
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}
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}
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func (phase *Phase) label() string {
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return fmt.Sprintf("%03d-%s", phase.sequenceNumber, phase.name)
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}
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func (phase *Phase) duration() time.Duration {
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endTime := phase.endTime
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if !phase.ended() {
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endTime = now()
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}
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return endTime.Sub(phase.startTime)
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}
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func (phase *Phase) humanReadable() string {
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if phase.ended() {
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return fmt.Sprintf("Phase %s: %v\n", phase.label(), phase.duration())
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}
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return fmt.Sprintf("Phase %s: %v so far\n", phase.label(), phase.duration())
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}
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// A TestPhaseTimer groups phases and provides a way to export their measurements as JSON or human-readable text.
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// It is safe to use concurrently.
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type TestPhaseTimer struct {
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lock sync.Mutex
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phases []*Phase
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}
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// NewTestPhaseTimer creates a new TestPhaseTimer.
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func NewTestPhaseTimer() *TestPhaseTimer {
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return &TestPhaseTimer{}
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}
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// StartPhase starts a new phase.
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// sequenceNumber is an integer prepended to phaseName in the output, such that lexicographic sorting
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// of phases in perfdash reconstructs the order of execution. Unfortunately it needs to be
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// provided manually, since a simple incrementing counter would have the effect that inserting
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// a new phase would renumber subsequent phases, breaking the continuity of historical records.
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func (timer *TestPhaseTimer) StartPhase(sequenceNumber int, phaseName string) *Phase {
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timer.lock.Lock()
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defer timer.lock.Unlock()
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newPhase := &Phase{sequenceNumber: sequenceNumber, name: phaseName, startTime: now()}
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timer.phases = append(timer.phases, newPhase)
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return newPhase
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}
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// SummaryKind returns the summary of test summary.
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func (timer *TestPhaseTimer) SummaryKind() string {
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return "TestPhaseTimer"
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}
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// PrintHumanReadable returns durations of all phases.
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func (timer *TestPhaseTimer) PrintHumanReadable() string {
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buf := bytes.Buffer{}
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timer.lock.Lock()
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defer timer.lock.Unlock()
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for _, phase := range timer.phases {
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buf.WriteString(phase.humanReadable())
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}
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return buf.String()
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}
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// PrintJSON returns durations of all phases with JSON format.
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func (timer *TestPhaseTimer) PrintJSON() string {
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data := perftype.PerfData{
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Version: "v1",
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DataItems: []perftype.DataItem{{
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Unit: "s",
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Labels: map[string]string{"test": "phases"},
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Data: make(map[string]float64)}}}
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timer.lock.Lock()
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defer timer.lock.Unlock()
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for _, phase := range timer.phases {
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data.DataItems[0].Data[phase.label()] = phase.duration().Seconds()
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if !phase.ended() {
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data.DataItems[0].Labels["ended"] = "false"
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}
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}
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return framework.PrettyPrintJSON(data)
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}
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