mirror of
https://github.com/kubernetes/node-problem-detector.git
synced 2026-08-23 06:06:25 +00:00
Veer Singh
ba3a2d858b
This change adds tests for generateStatus, the monitor lifecycle and the metrics path. Package coverage increases from 0.8% to 95.3% of statements. A table test replays sequences of plugin results against one monitor. The table covers the five condition scenarios in generateStatus. Other tests cover the temporary rule path, the problem counter, the problem gauge and the constructor. This change adds no production code.
697 lines
25 KiB
Go
697 lines
25 KiB
Go
/*
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Copyright 2019 The Kubernetes Authors All rights reserved.
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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 custompluginmonitor
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import (
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"encoding/json"
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"os"
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"path/filepath"
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"runtime"
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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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"k8s.io/node-problem-detector/pkg/custompluginmonitor/plugin"
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cpmtypes "k8s.io/node-problem-detector/pkg/custompluginmonitor/types"
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"k8s.io/node-problem-detector/pkg/problemdaemon"
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"k8s.io/node-problem-detector/pkg/problemmetrics"
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"k8s.io/node-problem-detector/pkg/types"
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"k8s.io/node-problem-detector/pkg/util"
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"k8s.io/node-problem-detector/pkg/util/metrics"
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"k8s.io/node-problem-detector/pkg/util/tomb"
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)
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const (
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testSource = "cpm-test"
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testConfigPath = "test-config-path"
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testCondition = "TestCondition"
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testConditionOK = "TestConditionOK"
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testConditionOKMsg = "test condition is ok"
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otherCondition = "OtherCondition"
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otherConditionOK = "OtherConditionOK"
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otherOKMsg = "other condition is ok"
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testProblemReason = "TestConditionProblem"
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testTempReason = "TestTempProblem"
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testWait = 3 * time.Second
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settleWait = 200 * time.Millisecond
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)
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// testEpoch is a fixed past instant stamped into Transition before a test runs.
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var testEpoch = time.Date(2020, 1, 1, 0, 0, 0, 0, time.UTC)
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func TestRegistration(t *testing.T) {
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assert.NotPanics(t,
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func() { problemdaemon.GetProblemDaemonHandlerOrDie("custom-plugin-monitor") },
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"Custom plugin monitor failed to register itself as a problem daemon.")
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}
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// testOptions holds fields the tests and structs below may need.
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type testOptions struct {
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defaultConditions []types.Condition
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rules []*cpmtypes.CustomRule
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messageChange bool
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enableMetricsReporting bool
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skipInitialStatus bool
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}
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// defaultTestConditions returns two conditions. The condition under test is second.
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func defaultTestConditions() []types.Condition {
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return []types.Condition{
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{Type: otherCondition, Reason: otherConditionOK, Message: otherOKMsg},
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{Type: testCondition, Reason: testConditionOK, Message: testConditionOKMsg},
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}
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}
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// newTestConfig builds a config with the defaults applied.
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func newTestConfig(t *testing.T, o testOptions) cpmtypes.CustomPluginConfig {
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t.Helper()
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cfg := cpmtypes.CustomPluginConfig{
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Plugin: "custom",
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Source: testSource,
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DefaultConditions: o.defaultConditions,
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Rules: o.rules,
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}
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require.NoError(t, (&cfg).ApplyConfiguration())
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messageChange := o.messageChange
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metricsReporting := o.enableMetricsReporting
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skipInitialStatus := o.skipInitialStatus
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cfg.PluginGlobalConfig.EnableMessageChangeBasedConditionUpdate = &messageChange
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cfg.PluginGlobalConfig.SkipInitialStatus = &skipInitialStatus
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cfg.EnableMetricsReporting = &metricsReporting
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return cfg
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}
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// newTestMonitor builds a monitor with its conditions initialized.
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func newTestMonitor(t *testing.T, o testOptions) *customPluginMonitor {
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t.Helper()
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cfg := newTestConfig(t, o)
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c := &customPluginMonitor{
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configPath: testConfigPath,
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config: cfg,
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plugin: plugin.NewPlugin(cfg),
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statusChan: make(chan *types.Status, 1000),
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tomb: tomb.NewTomb(),
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}
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c.initializeConditions()
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for i := range c.conditions {
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c.conditions[i].Transition = testEpoch
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}
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return c
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}
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// testPluginScript returns the path of a script in the plugin package's test data.
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func testPluginScript(name string) string {
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ext := "sh"
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if runtime.GOOS == "windows" {
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ext = "cmd"
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}
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return filepath.Join("plugin", "test-data", name+"."+ext)
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}
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// permResult builds a permanent-rule result for the condition under test.
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func permResult(status cpmtypes.Status, reason, message string) cpmtypes.Result {
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return cpmtypes.Result{
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Rule: &cpmtypes.CustomRule{Type: types.Perm, Condition: testCondition, Reason: reason},
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ExitStatus: status,
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Message: message,
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}
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}
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// stubProblemMetrics replaces the global metrics manager with a stub. Do not call t.Parallel.
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func stubProblemMetrics(t *testing.T) (*metrics.FakeInt64Metric, *metrics.FakeInt64Metric) {
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t.Helper()
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original := problemmetrics.GlobalProblemMetricsManager
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t.Cleanup(func() { problemmetrics.GlobalProblemMetricsManager = original })
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pmm, counter, gauge := problemmetrics.NewProblemMetricsManagerStub()
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problemmetrics.GlobalProblemMetricsManager = pmm
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return counter, gauge
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}
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// receiveStatus returns the next status from the channel or fails the test after testWait.
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func receiveStatus(t *testing.T, ch <-chan *types.Status) *types.Status {
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t.Helper()
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select {
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case status := <-ch:
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return status
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case <-time.After(testWait):
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t.Fatal("timed out waiting for a status")
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return nil
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}
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}
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// requireNoStatus fails the test if a status arrives within settleWait.
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func requireNoStatus(t *testing.T, ch <-chan *types.Status) {
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t.Helper()
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select {
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case status := <-ch:
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t.Fatalf("expected no status, got %+v", status)
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case <-time.After(settleWait):
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}
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}
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// requireStop calls Stop and fails the test if Stop does not return within testWait.
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func requireStop(t *testing.T, c *customPluginMonitor) {
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t.Helper()
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stopped := make(chan struct{})
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go func() {
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c.Stop()
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close(stopped)
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}()
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select {
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case <-stopped:
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case <-time.After(testWait):
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t.Fatal("Stop did not return")
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}
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}
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// step is one generateStatus call plus everything expected right after it.
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type step struct {
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exitStatus cpmtypes.Status
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ruleReason string
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message string
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wantStatus types.ConditionStatus
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wantReason string
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wantMessage string
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wantEvent bool
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}
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func TestGenerateStatusForConditions(t *testing.T) {
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testCases := []struct {
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name string
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messageChange bool
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ruleCondition string
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steps []step
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}{
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{
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name: "stays false, no event",
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ruleCondition: testCondition,
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steps: []step{
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{
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exitStatus: cpmtypes.OK, ruleReason: testProblemReason, message: "still fine",
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wantStatus: types.False, wantReason: testConditionOK, wantMessage: testConditionOKMsg, wantEvent: false,
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},
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{
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exitStatus: cpmtypes.OK, ruleReason: testProblemReason, message: "still fine",
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wantStatus: types.False, wantReason: testConditionOK, wantMessage: testConditionOKMsg, wantEvent: false,
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},
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},
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},
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{
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name: "false to true then back to false restores the default",
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ruleCondition: testCondition,
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steps: []step{
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{
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exitStatus: cpmtypes.NonOK, ruleReason: testProblemReason, message: "boom",
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wantStatus: types.True, wantReason: testProblemReason, wantMessage: "boom", wantEvent: true,
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},
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{
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exitStatus: cpmtypes.OK, ruleReason: testProblemReason, message: "all good",
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wantStatus: types.False, wantReason: testConditionOK, wantMessage: testConditionOKMsg, wantEvent: true,
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},
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},
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},
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{
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name: "true to unknown keeps the result message",
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ruleCondition: testCondition,
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steps: []step{
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{
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exitStatus: cpmtypes.NonOK, ruleReason: testProblemReason, message: "boom",
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wantStatus: types.True, wantReason: testProblemReason, wantMessage: "boom", wantEvent: true,
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},
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{
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exitStatus: cpmtypes.Unknown, ruleReason: testProblemReason, message: "plugin timed out",
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wantStatus: types.Unknown, wantReason: testConditionOK, wantMessage: "plugin timed out", wantEvent: true,
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},
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},
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},
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{
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name: "unknown transitions",
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ruleCondition: testCondition,
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steps: []step{
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{
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exitStatus: cpmtypes.Unknown, ruleReason: testProblemReason, message: "cannot exec",
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wantStatus: types.Unknown, wantReason: testConditionOK, wantMessage: "cannot exec", wantEvent: true,
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},
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{
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exitStatus: cpmtypes.Unknown, ruleReason: testProblemReason, message: "cannot exec either",
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wantStatus: types.Unknown, wantReason: testConditionOK, wantMessage: "cannot exec", wantEvent: false,
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},
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{
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exitStatus: cpmtypes.OK, ruleReason: testProblemReason, message: "all good",
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wantStatus: types.False, wantReason: testConditionOK, wantMessage: testConditionOKMsg, wantEvent: true,
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},
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{
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exitStatus: cpmtypes.NonOK, ruleReason: testProblemReason, message: "boom",
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wantStatus: types.True, wantReason: testProblemReason, wantMessage: "boom", wantEvent: true,
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},
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},
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},
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{
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name: "reason change while true updates",
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ruleCondition: testCondition,
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steps: []step{
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{
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exitStatus: cpmtypes.NonOK, ruleReason: "ReasonA", message: "m",
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wantStatus: types.True, wantReason: "ReasonA", wantMessage: "m", wantEvent: true,
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},
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{
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exitStatus: cpmtypes.NonOK, ruleReason: "ReasonB", message: "m",
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wantStatus: types.True, wantReason: "ReasonB", wantMessage: "m", wantEvent: true,
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},
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},
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},
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{
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name: "message change ignored when the flag is off",
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messageChange: false,
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ruleCondition: testCondition,
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steps: []step{
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{
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exitStatus: cpmtypes.NonOK, ruleReason: testProblemReason, message: "first",
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wantStatus: types.True, wantReason: testProblemReason, wantMessage: "first", wantEvent: true,
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},
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{
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exitStatus: cpmtypes.NonOK, ruleReason: testProblemReason, message: "second",
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wantStatus: types.True, wantReason: testProblemReason, wantMessage: "first", wantEvent: false,
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},
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},
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},
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{
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name: "message change applied when the flag is on",
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messageChange: true,
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ruleCondition: testCondition,
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steps: []step{
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{
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exitStatus: cpmtypes.NonOK, ruleReason: testProblemReason, message: "first",
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wantStatus: types.True, wantReason: testProblemReason, wantMessage: "first", wantEvent: true,
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},
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{
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exitStatus: cpmtypes.NonOK, ruleReason: testProblemReason, message: "second",
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wantStatus: types.True, wantReason: testProblemReason, wantMessage: "second", wantEvent: true,
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},
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},
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},
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{
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name: "identical result while true does not update",
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messageChange: true,
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ruleCondition: testCondition,
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steps: []step{
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{
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exitStatus: cpmtypes.NonOK, ruleReason: testProblemReason, message: "same",
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wantStatus: types.True, wantReason: testProblemReason, wantMessage: "same", wantEvent: true,
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},
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{
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exitStatus: cpmtypes.NonOK, ruleReason: testProblemReason, message: "same",
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wantStatus: types.True, wantReason: testProblemReason, wantMessage: "same", wantEvent: false,
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},
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},
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},
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{
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name: "rule for an unknown condition changes nothing",
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ruleCondition: "NoSuchCondition",
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steps: []step{
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{
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exitStatus: cpmtypes.NonOK, ruleReason: testProblemReason, message: "boom",
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wantStatus: types.False, wantReason: testConditionOK, wantMessage: testConditionOKMsg, wantEvent: false,
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},
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},
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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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c := newTestMonitor(t, testOptions{
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defaultConditions: defaultTestConditions(),
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messageChange: test.messageChange,
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})
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for i, s := range test.steps {
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result := cpmtypes.Result{
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Rule: &cpmtypes.CustomRule{
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Type: types.Perm,
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Condition: test.ruleCondition,
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Reason: s.ruleReason,
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},
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ExitStatus: s.exitStatus,
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Message: s.message,
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}
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got := c.generateStatus(result)
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// status.Conditions is an alias for c.conditions.
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require.Len(t, got.Conditions, 2, "step %d", i)
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assert.Equal(t, testSource, got.Source, "step %d", i)
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cond := got.Conditions[1]
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assert.Equal(t, testCondition, cond.Type, "step %d", i)
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assert.Equal(t, s.wantStatus, cond.Status, "step %d", i)
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assert.Equal(t, s.wantReason, cond.Reason, "step %d", i)
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assert.Equal(t, s.wantMessage, cond.Message, "step %d", i)
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// The rule does not target the first condition, so it must not change.
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other := got.Conditions[0]
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assert.Equal(t, types.False, other.Status, "step %d", i)
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assert.Equal(t, otherConditionOK, other.Reason, "step %d", i)
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assert.Equal(t, otherOKMsg, other.Message, "step %d", i)
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assert.True(t, other.Transition.Equal(testEpoch), "step %d", i)
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if !s.wantEvent {
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assert.Empty(t, got.Events, "step %d", i)
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continue
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}
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require.Len(t, got.Events, 1, "step %d", i)
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event := got.Events[0]
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// Feed the observed timestamp back so no clock value is asserted.
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want := util.GenerateConditionChangeEvent(
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testCondition, s.wantStatus, s.wantReason, s.wantMessage, event.Timestamp)
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assert.Equal(t, want, event, "step %d", i)
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assert.True(t, cond.Transition.Equal(event.Timestamp), "step %d", i)
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assert.False(t, cond.Transition.Equal(testEpoch), "step %d", i)
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}
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})
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}
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}
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func TestGenerateStatusForTemporaryProblem(t *testing.T) {
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testCases := []struct {
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name string
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exitStatus cpmtypes.Status
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wantEvent bool
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}{
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{name: "ok produces no event", exitStatus: cpmtypes.OK, wantEvent: false},
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{name: "non-ok produces an event", exitStatus: cpmtypes.NonOK, wantEvent: true},
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{name: "unknown produces an event", exitStatus: cpmtypes.Unknown, wantEvent: true},
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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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c := newTestMonitor(t, testOptions{defaultConditions: defaultTestConditions()})
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result := cpmtypes.Result{
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// Condition is set on purpose. A temporary rule must ignore it.
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Rule: &cpmtypes.CustomRule{Type: types.Temp, Condition: testCondition, Reason: testTempReason},
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ExitStatus: test.exitStatus,
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Message: "temporary problem detail",
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}
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got := c.generateStatus(result)
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assert.Equal(t, testSource, got.Source)
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if !test.wantEvent {
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assert.Empty(t, got.Events)
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} else {
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require.Len(t, got.Events, 1)
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event := got.Events[0]
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assert.Equal(t, types.Warn, event.Severity)
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assert.Equal(t, testTempReason, event.Reason)
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// A temporary event carries the raw plugin output.
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assert.Equal(t, "temporary problem detail", event.Message)
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assert.False(t, event.Timestamp.IsZero())
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}
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// No condition may move.
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require.Len(t, got.Conditions, 2)
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for _, cond := range got.Conditions {
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assert.Equal(t, types.False, cond.Status)
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assert.True(t, cond.Transition.Equal(testEpoch))
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}
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})
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}
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}
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func TestGenerateStatusMetrics(t *testing.T) {
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testCases := []struct {
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name string
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enableMetricsReporting bool
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results []cpmtypes.Result
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expectedMetrics []metrics.Int64MetricRepresentation
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}{
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{
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name: "reporting disabled records nothing",
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enableMetricsReporting: false,
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results: []cpmtypes.Result{permResult(cpmtypes.NonOK, testProblemReason, "boom")},
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expectedMetrics: []metrics.Int64MetricRepresentation{},
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},
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{
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name: "problem detected increments the counter and raises the gauge",
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enableMetricsReporting: true,
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results: []cpmtypes.Result{permResult(cpmtypes.NonOK, testProblemReason, "boom")},
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expectedMetrics: []metrics.Int64MetricRepresentation{
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{Name: "problem_counter", Labels: map[string]string{"reason": testProblemReason}, Value: 1},
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{Name: "problem_gauge", Labels: map[string]string{"type": otherCondition, "reason": otherConditionOK}, Value: 0},
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{Name: "problem_gauge", Labels: map[string]string{"type": testCondition, "reason": testProblemReason}, Value: 1},
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},
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},
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{
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name: "problem resolved does not increment the counter",
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enableMetricsReporting: true,
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results: []cpmtypes.Result{
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permResult(cpmtypes.NonOK, testProblemReason, "boom"),
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permResult(cpmtypes.OK, testProblemReason, "all good"),
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},
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expectedMetrics: []metrics.Int64MetricRepresentation{
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{Name: "problem_counter", Labels: map[string]string{"reason": testProblemReason}, Value: 1},
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{Name: "problem_gauge", Labels: map[string]string{"type": otherCondition, "reason": otherConditionOK}, Value: 0},
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{Name: "problem_gauge", Labels: map[string]string{"type": testCondition, "reason": testProblemReason}, Value: 0},
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{Name: "problem_gauge", Labels: map[string]string{"type": testCondition, "reason": testConditionOK}, Value: 0},
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},
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},
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{
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name: "unknown condition is not an active problem",
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enableMetricsReporting: true,
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results: []cpmtypes.Result{permResult(cpmtypes.Unknown, testProblemReason, "cannot exec")},
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expectedMetrics: []metrics.Int64MetricRepresentation{
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{Name: "problem_gauge", Labels: map[string]string{"type": otherCondition, "reason": otherConditionOK}, Value: 0},
|
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{Name: "problem_gauge", Labels: map[string]string{"type": testCondition, "reason": testConditionOK}, Value: 0},
|
|
},
|
|
},
|
|
{
|
|
name: "temporary problem increments the counter and refreshes every gauge",
|
|
enableMetricsReporting: true,
|
|
results: []cpmtypes.Result{{
|
|
Rule: &cpmtypes.CustomRule{Type: types.Temp, Reason: testTempReason},
|
|
ExitStatus: cpmtypes.NonOK,
|
|
Message: "temporary problem detail",
|
|
}},
|
|
expectedMetrics: []metrics.Int64MetricRepresentation{
|
|
{Name: "problem_counter", Labels: map[string]string{"reason": testTempReason}, Value: 1},
|
|
{Name: "problem_gauge", Labels: map[string]string{"type": otherCondition, "reason": otherConditionOK}, Value: 0},
|
|
{Name: "problem_gauge", Labels: map[string]string{"type": testCondition, "reason": testConditionOK}, Value: 0},
|
|
},
|
|
},
|
|
}
|
|
|
|
for _, test := range testCases {
|
|
t.Run(test.name, func(t *testing.T) {
|
|
fakeCounter, fakeGauge := stubProblemMetrics(t)
|
|
c := newTestMonitor(t, testOptions{
|
|
defaultConditions: defaultTestConditions(),
|
|
enableMetricsReporting: test.enableMetricsReporting,
|
|
})
|
|
for _, result := range test.results {
|
|
c.generateStatus(result)
|
|
}
|
|
gotMetrics := append(fakeCounter.ListMetrics(), fakeGauge.ListMetrics()...)
|
|
assert.ElementsMatch(t, test.expectedMetrics, gotMetrics,
|
|
"expected metrics: %+v, got: %+v", test.expectedMetrics, gotMetrics)
|
|
})
|
|
}
|
|
}
|
|
|
|
func TestGenerateStatusSurvivesMetricsFailure(t *testing.T) {
|
|
original := problemmetrics.GlobalProblemMetricsManager
|
|
t.Cleanup(func() { problemmetrics.GlobalProblemMetricsManager = original })
|
|
problemmetrics.GlobalProblemMetricsManager = &problemmetrics.ProblemMetricsManager{}
|
|
|
|
c := newTestMonitor(t, testOptions{
|
|
defaultConditions: defaultTestConditions(),
|
|
enableMetricsReporting: true,
|
|
})
|
|
var got *types.Status
|
|
require.NotPanics(t, func() {
|
|
got = c.generateStatus(permResult(cpmtypes.NonOK, testProblemReason, "boom"))
|
|
})
|
|
// A metrics backend failure must not change what is reported.
|
|
require.Len(t, got.Conditions, 2)
|
|
assert.Equal(t, types.True, got.Conditions[1].Status)
|
|
assert.Equal(t, testProblemReason, got.Conditions[1].Reason)
|
|
assert.Equal(t, "boom", got.Conditions[1].Message)
|
|
require.Len(t, got.Events, 1)
|
|
assert.Equal(t, types.Warn, got.Events[0].Severity)
|
|
}
|
|
|
|
func TestGenerateStatusPreservesConfiguredDefaults(t *testing.T) {
|
|
c := newTestMonitor(t, testOptions{defaultConditions: defaultTestConditions()})
|
|
wantReason := c.config.DefaultConditions[1].Reason
|
|
wantMessage := c.config.DefaultConditions[1].Message
|
|
|
|
c.generateStatus(permResult(cpmtypes.NonOK, testProblemReason, "boom"))
|
|
got := c.generateStatus(permResult(cpmtypes.OK, testProblemReason, "all good"))
|
|
|
|
require.Len(t, got.Conditions, 2)
|
|
assert.Equal(t, types.False, got.Conditions[1].Status)
|
|
assert.Equal(t, wantReason, got.Conditions[1].Reason)
|
|
assert.Equal(t, wantMessage, got.Conditions[1].Message)
|
|
|
|
assert.Equal(t, wantReason, c.config.DefaultConditions[1].Reason)
|
|
assert.Equal(t, wantMessage, c.config.DefaultConditions[1].Message)
|
|
assert.Empty(t, c.config.DefaultConditions[1].Status)
|
|
}
|
|
|
|
func TestMonitorLoopReportsPluginResults(t *testing.T) {
|
|
// A one-day interval makes sure the plugin runs only once.
|
|
interval := 24 * time.Hour
|
|
intervalString := interval.String()
|
|
rule := &cpmtypes.CustomRule{
|
|
Type: types.Perm,
|
|
Condition: testCondition,
|
|
Reason: testProblemReason,
|
|
Path: testPluginScript("non-ok"),
|
|
InvokeIntervalString: &intervalString,
|
|
}
|
|
c := newTestMonitor(t, testOptions{
|
|
defaultConditions: defaultTestConditions(),
|
|
rules: []*cpmtypes.CustomRule{rule},
|
|
skipInitialStatus: true,
|
|
})
|
|
statusChan, err := c.Start()
|
|
require.NoError(t, err)
|
|
|
|
status := receiveStatus(t, statusChan)
|
|
require.Len(t, status.Conditions, 2)
|
|
assert.Equal(t, types.True, status.Conditions[1].Status)
|
|
assert.Equal(t, testProblemReason, status.Conditions[1].Reason)
|
|
require.Len(t, status.Events, 1)
|
|
assert.Equal(t, types.Warn, status.Events[0].Severity)
|
|
|
|
requireStop(t, c)
|
|
}
|
|
|
|
func TestMonitorLoopExitsWhenResultChannelCloses(t *testing.T) {
|
|
c := newTestMonitor(t, testOptions{defaultConditions: defaultTestConditions()})
|
|
// monitorLoop must initialize the conditions itself.
|
|
c.conditions = nil
|
|
statusChan, err := c.Start()
|
|
require.NoError(t, err)
|
|
|
|
status := receiveStatus(t, statusChan)
|
|
assert.Equal(t, testSource, status.Source)
|
|
assert.Empty(t, status.Events)
|
|
require.Len(t, status.Conditions, 2)
|
|
for _, cond := range status.Conditions {
|
|
assert.Equal(t, types.False, cond.Status)
|
|
}
|
|
|
|
// Stopping the plugin closes its result channel.
|
|
c.plugin.Stop()
|
|
requireNoStatus(t, statusChan)
|
|
}
|
|
|
|
func TestInitializeProblemMetricsOrDie(t *testing.T) {
|
|
testCases := []struct {
|
|
name string
|
|
rules []*cpmtypes.CustomRule
|
|
expectedMetrics []metrics.Int64MetricRepresentation
|
|
}{
|
|
{
|
|
name: "no rules",
|
|
rules: nil,
|
|
expectedMetrics: []metrics.Int64MetricRepresentation{},
|
|
},
|
|
{
|
|
name: "temporary rule gets a counter but no gauge",
|
|
rules: []*cpmtypes.CustomRule{{Type: types.Temp, Reason: testTempReason}},
|
|
expectedMetrics: []metrics.Int64MetricRepresentation{
|
|
{Name: "problem_counter", Labels: map[string]string{"reason": testTempReason}, Value: 0},
|
|
},
|
|
},
|
|
{
|
|
name: "permanent rule gets a counter and a gauge",
|
|
rules: []*cpmtypes.CustomRule{
|
|
{Type: types.Perm, Condition: testCondition, Reason: testProblemReason},
|
|
},
|
|
expectedMetrics: []metrics.Int64MetricRepresentation{
|
|
{Name: "problem_counter", Labels: map[string]string{"reason": testProblemReason}, Value: 0},
|
|
{Name: "problem_gauge", Labels: map[string]string{"type": testCondition, "reason": testProblemReason}, Value: 0},
|
|
},
|
|
},
|
|
}
|
|
|
|
for _, test := range testCases {
|
|
t.Run(test.name, func(t *testing.T) {
|
|
fakeCounter, fakeGauge := stubProblemMetrics(t)
|
|
initializeProblemMetricsOrDie(test.rules)
|
|
gotMetrics := append(fakeCounter.ListMetrics(), fakeGauge.ListMetrics()...)
|
|
assert.ElementsMatch(t, test.expectedMetrics, gotMetrics,
|
|
"expected metrics: %+v, got: %+v", test.expectedMetrics, gotMetrics)
|
|
})
|
|
}
|
|
}
|
|
|
|
func TestNewCustomPluginMonitorOrDie(t *testing.T) {
|
|
fakeCounter, fakeGauge := stubProblemMetrics(t)
|
|
|
|
raw, err := json.Marshal(map[string]any{
|
|
"plugin": "custom",
|
|
"pluginConfig": map[string]any{
|
|
"invoke_interval": "10s",
|
|
"timeout": "5s",
|
|
},
|
|
"source": testSource,
|
|
"conditions": []map[string]any{
|
|
{"type": testCondition, "reason": testConditionOK, "message": testConditionOKMsg},
|
|
},
|
|
"rules": []map[string]any{
|
|
{
|
|
"type": "permanent",
|
|
"condition": testCondition,
|
|
"reason": testProblemReason,
|
|
"path": testPluginScript("ok"),
|
|
},
|
|
},
|
|
})
|
|
require.NoError(t, err)
|
|
configPath := filepath.Join(t.TempDir(), "config.json")
|
|
require.NoError(t, os.WriteFile(configPath, raw, 0o600))
|
|
|
|
monitor := NewCustomPluginMonitorOrDie(configPath)
|
|
require.NotNil(t, monitor)
|
|
c, ok := monitor.(*customPluginMonitor)
|
|
require.True(t, ok)
|
|
|
|
assert.Equal(t, configPath, c.configPath)
|
|
assert.Equal(t, testSource, c.config.Source)
|
|
require.Len(t, c.config.Rules, 1)
|
|
assert.Equal(t, testProblemReason, c.config.Rules[0].Reason)
|
|
// ApplyConfiguration must set these pointers before use.
|
|
require.NotNil(t, c.config.PluginGlobalConfig.InvokeInterval)
|
|
assert.Equal(t, 10*time.Second, *c.config.PluginGlobalConfig.InvokeInterval)
|
|
require.NotNil(t, c.config.PluginGlobalConfig.Timeout)
|
|
require.NotNil(t, c.config.PluginGlobalConfig.Concurrency)
|
|
require.NotNil(t, c.config.PluginGlobalConfig.MaxOutputLength)
|
|
require.NotNil(t, c.config.PluginGlobalConfig.SkipInitialStatus)
|
|
require.NotNil(t, c.config.EnableMetricsReporting)
|
|
assert.True(t, *c.config.EnableMetricsReporting)
|
|
assert.NotNil(t, c.plugin)
|
|
assert.NotNil(t, c.tomb)
|
|
// The send in monitorLoop is the only writer and must not block.
|
|
assert.NotZero(t, cap(c.statusChan))
|
|
|
|
expectedMetrics := []metrics.Int64MetricRepresentation{
|
|
{Name: "problem_counter", Labels: map[string]string{"reason": testProblemReason}, Value: 0},
|
|
{Name: "problem_gauge", Labels: map[string]string{"type": testCondition, "reason": testProblemReason}, Value: 0},
|
|
}
|
|
gotMetrics := append(fakeCounter.ListMetrics(), fakeGauge.ListMetrics()...)
|
|
assert.ElementsMatch(t, expectedMetrics, gotMetrics)
|
|
}
|