mirror of
https://github.com/prometheus/prometheus.git
synced 2024-12-26 22:19:40 -08:00
1063 lines
27 KiB
Go
1063 lines
27 KiB
Go
// Copyright 2016 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 rules
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import (
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"context"
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"errors"
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"testing"
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"time"
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"github.com/go-kit/log"
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"github.com/prometheus/common/model"
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"github.com/stretchr/testify/require"
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"github.com/prometheus/prometheus/model/histogram"
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"github.com/prometheus/prometheus/model/labels"
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"github.com/prometheus/prometheus/model/relabel"
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"github.com/prometheus/prometheus/model/timestamp"
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"github.com/prometheus/prometheus/notifier"
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"github.com/prometheus/prometheus/promql"
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"github.com/prometheus/prometheus/promql/parser"
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"github.com/prometheus/prometheus/promql/promqltest"
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"github.com/prometheus/prometheus/storage"
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"github.com/prometheus/prometheus/util/teststorage"
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"github.com/prometheus/prometheus/util/testutil"
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)
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func testEngine(tb testing.TB) *promql.Engine {
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tb.Helper()
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return promqltest.NewTestEngineWithOpts(tb, promql.EngineOpts{
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Logger: nil,
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Reg: nil,
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MaxSamples: 10000,
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Timeout: 100 * time.Second,
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NoStepSubqueryIntervalFn: func(int64) int64 { return 60 * 1000 },
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EnableAtModifier: true,
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EnableNegativeOffset: true,
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EnablePerStepStats: true,
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})
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}
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func TestAlertingRuleState(t *testing.T) {
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tests := []struct {
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name string
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active map[uint64]*Alert
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want AlertState
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}{
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{
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name: "MaxStateFiring",
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active: map[uint64]*Alert{
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0: {State: StatePending},
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1: {State: StateFiring},
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},
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want: StateFiring,
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},
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{
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name: "MaxStatePending",
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active: map[uint64]*Alert{
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0: {State: StateInactive},
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1: {State: StatePending},
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},
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want: StatePending,
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},
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{
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name: "MaxStateInactive",
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active: map[uint64]*Alert{
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0: {State: StateInactive},
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1: {State: StateInactive},
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},
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want: StateInactive,
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},
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}
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for i, test := range tests {
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rule := NewAlertingRule(test.name, nil, 0, 0, labels.EmptyLabels(), labels.EmptyLabels(), labels.EmptyLabels(), "", true, nil)
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rule.active = test.active
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got := rule.State()
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require.Equal(t, test.want, got, "test case %d unexpected AlertState, want:%d got:%d", i, test.want, got)
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}
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}
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func TestAlertingRuleTemplateWithHistogram(t *testing.T) {
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h := histogram.FloatHistogram{
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Schema: 0,
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Count: 30,
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Sum: 1111.1,
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ZeroThreshold: 0.001,
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ZeroCount: 2,
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PositiveSpans: []histogram.Span{
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{Offset: 0, Length: 1},
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{Offset: 1, Length: 5},
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},
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PositiveBuckets: []float64{1, 1, 2, 1, 1, 1},
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NegativeSpans: []histogram.Span{
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{Offset: 1, Length: 4},
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{Offset: 4, Length: 3},
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},
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NegativeBuckets: []float64{-2, 2, 2, 7, 5, 5, 2},
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}
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q := func(ctx context.Context, qs string, t time.Time) (promql.Vector, error) {
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return []promql.Sample{{H: &h}}, nil
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}
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expr, err := parser.ParseExpr("foo")
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require.NoError(t, err)
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rule := NewAlertingRule(
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"HistogramAsValue",
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expr,
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time.Minute,
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0,
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labels.FromStrings("histogram", "{{ $value }}"),
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labels.EmptyLabels(), labels.EmptyLabels(), "", true, nil,
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)
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evalTime := time.Now()
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res, err := rule.Eval(context.TODO(), 0, evalTime, q, nil, 0)
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require.NoError(t, err)
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require.Len(t, res, 2)
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for _, smpl := range res {
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smplName := smpl.Metric.Get("__name__")
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if smplName == "ALERTS" {
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result := promql.Sample{
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Metric: labels.FromStrings(
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"__name__", "ALERTS",
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"alertname", "HistogramAsValue",
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"alertstate", "pending",
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"histogram", h.String(),
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),
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T: timestamp.FromTime(evalTime),
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F: 1,
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}
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testutil.RequireEqual(t, result, smpl)
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} else {
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// If not 'ALERTS', it has to be 'ALERTS_FOR_STATE'.
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require.Equal(t, "ALERTS_FOR_STATE", smplName)
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}
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}
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}
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func TestAlertingRuleLabelsUpdate(t *testing.T) {
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storage := promqltest.LoadedStorage(t, `
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load 1m
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http_requests{job="app-server", instance="0"} 75 85 70 70 stale
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`)
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t.Cleanup(func() { storage.Close() })
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expr, err := parser.ParseExpr(`http_requests < 100`)
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require.NoError(t, err)
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rule := NewAlertingRule(
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"HTTPRequestRateLow",
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expr,
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time.Minute,
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0,
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// Basing alerting rule labels off of a value that can change is a very bad idea.
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// If an alert is going back and forth between two label values it will never fire.
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// Instead, you should write two alerts with constant labels.
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labels.FromStrings("severity", "{{ if lt $value 80.0 }}critical{{ else }}warning{{ end }}"),
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labels.EmptyLabels(), labels.EmptyLabels(), "", true, nil,
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)
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results := []promql.Vector{
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{
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promql.Sample{
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Metric: labels.FromStrings(
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"__name__", "ALERTS",
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"alertname", "HTTPRequestRateLow",
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"alertstate", "pending",
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"instance", "0",
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"job", "app-server",
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"severity", "critical",
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),
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F: 1,
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},
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},
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{
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promql.Sample{
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Metric: labels.FromStrings(
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"__name__", "ALERTS",
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"alertname", "HTTPRequestRateLow",
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"alertstate", "pending",
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"instance", "0",
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"job", "app-server",
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"severity", "warning",
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),
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F: 1,
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},
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},
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{
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promql.Sample{
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Metric: labels.FromStrings(
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"__name__", "ALERTS",
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"alertname", "HTTPRequestRateLow",
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"alertstate", "pending",
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"instance", "0",
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"job", "app-server",
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"severity", "critical",
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),
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F: 1,
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},
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},
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{
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promql.Sample{
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Metric: labels.FromStrings(
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"__name__", "ALERTS",
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"alertname", "HTTPRequestRateLow",
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"alertstate", "firing",
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"instance", "0",
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"job", "app-server",
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"severity", "critical",
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),
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F: 1,
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},
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},
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}
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ng := testEngine(t)
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baseTime := time.Unix(0, 0)
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for i, result := range results {
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t.Logf("case %d", i)
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evalTime := baseTime.Add(time.Duration(i) * time.Minute)
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result[0].T = timestamp.FromTime(evalTime)
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res, err := rule.Eval(context.TODO(), 0, evalTime, EngineQueryFunc(ng, storage), nil, 0)
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require.NoError(t, err)
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var filteredRes promql.Vector // After removing 'ALERTS_FOR_STATE' samples.
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for _, smpl := range res {
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smplName := smpl.Metric.Get("__name__")
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if smplName == "ALERTS" {
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filteredRes = append(filteredRes, smpl)
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} else {
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// If not 'ALERTS', it has to be 'ALERTS_FOR_STATE'.
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require.Equal(t, "ALERTS_FOR_STATE", smplName)
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}
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}
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testutil.RequireEqual(t, result, filteredRes)
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}
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evalTime := baseTime.Add(time.Duration(len(results)) * time.Minute)
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res, err := rule.Eval(context.TODO(), 0, evalTime, EngineQueryFunc(ng, storage), nil, 0)
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require.NoError(t, err)
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require.Empty(t, res)
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}
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func TestAlertingRuleExternalLabelsInTemplate(t *testing.T) {
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storage := promqltest.LoadedStorage(t, `
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load 1m
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http_requests{job="app-server", instance="0"} 75 85 70 70
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`)
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t.Cleanup(func() { storage.Close() })
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expr, err := parser.ParseExpr(`http_requests < 100`)
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require.NoError(t, err)
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ruleWithoutExternalLabels := NewAlertingRule(
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"ExternalLabelDoesNotExist",
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expr,
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time.Minute,
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0,
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labels.FromStrings("templated_label", "There are {{ len $externalLabels }} external Labels, of which foo is {{ $externalLabels.foo }}."),
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labels.EmptyLabels(),
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labels.EmptyLabels(),
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"",
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true, log.NewNopLogger(),
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)
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ruleWithExternalLabels := NewAlertingRule(
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"ExternalLabelExists",
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expr,
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time.Minute,
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0,
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labels.FromStrings("templated_label", "There are {{ len $externalLabels }} external Labels, of which foo is {{ $externalLabels.foo }}."),
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labels.EmptyLabels(),
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labels.FromStrings("foo", "bar", "dings", "bums"),
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"",
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true, log.NewNopLogger(),
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)
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result := promql.Vector{
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promql.Sample{
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Metric: labels.FromStrings(
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"__name__", "ALERTS",
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"alertname", "ExternalLabelDoesNotExist",
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"alertstate", "pending",
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"instance", "0",
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"job", "app-server",
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"templated_label", "There are 0 external Labels, of which foo is .",
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),
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F: 1,
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},
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promql.Sample{
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Metric: labels.FromStrings(
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"__name__", "ALERTS",
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"alertname", "ExternalLabelExists",
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"alertstate", "pending",
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"instance", "0",
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"job", "app-server",
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"templated_label", "There are 2 external Labels, of which foo is bar.",
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),
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F: 1,
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},
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}
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ng := testEngine(t)
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evalTime := time.Unix(0, 0)
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result[0].T = timestamp.FromTime(evalTime)
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result[1].T = timestamp.FromTime(evalTime)
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var filteredRes promql.Vector // After removing 'ALERTS_FOR_STATE' samples.
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res, err := ruleWithoutExternalLabels.Eval(
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context.TODO(), 0, evalTime, EngineQueryFunc(ng, storage), nil, 0,
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)
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require.NoError(t, err)
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for _, smpl := range res {
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smplName := smpl.Metric.Get("__name__")
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if smplName == "ALERTS" {
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filteredRes = append(filteredRes, smpl)
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} else {
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// If not 'ALERTS', it has to be 'ALERTS_FOR_STATE'.
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require.Equal(t, "ALERTS_FOR_STATE", smplName)
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}
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}
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res, err = ruleWithExternalLabels.Eval(
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context.TODO(), 0, evalTime, EngineQueryFunc(ng, storage), nil, 0,
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)
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require.NoError(t, err)
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for _, smpl := range res {
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smplName := smpl.Metric.Get("__name__")
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if smplName == "ALERTS" {
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filteredRes = append(filteredRes, smpl)
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} else {
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// If not 'ALERTS', it has to be 'ALERTS_FOR_STATE'.
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require.Equal(t, "ALERTS_FOR_STATE", smplName)
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}
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}
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testutil.RequireEqual(t, result, filteredRes)
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}
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func TestAlertingRuleExternalURLInTemplate(t *testing.T) {
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storage := promqltest.LoadedStorage(t, `
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load 1m
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http_requests{job="app-server", instance="0"} 75 85 70 70
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`)
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t.Cleanup(func() { storage.Close() })
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expr, err := parser.ParseExpr(`http_requests < 100`)
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require.NoError(t, err)
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ruleWithoutExternalURL := NewAlertingRule(
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"ExternalURLDoesNotExist",
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expr,
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time.Minute,
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0,
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labels.FromStrings("templated_label", "The external URL is {{ $externalURL }}."),
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labels.EmptyLabels(),
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labels.EmptyLabels(),
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"",
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true, log.NewNopLogger(),
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)
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ruleWithExternalURL := NewAlertingRule(
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"ExternalURLExists",
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expr,
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time.Minute,
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0,
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labels.FromStrings("templated_label", "The external URL is {{ $externalURL }}."),
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labels.EmptyLabels(),
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labels.EmptyLabels(),
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"http://localhost:1234",
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true, log.NewNopLogger(),
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)
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result := promql.Vector{
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promql.Sample{
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Metric: labels.FromStrings(
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"__name__", "ALERTS",
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"alertname", "ExternalURLDoesNotExist",
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"alertstate", "pending",
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"instance", "0",
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"job", "app-server",
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"templated_label", "The external URL is .",
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),
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F: 1,
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},
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promql.Sample{
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Metric: labels.FromStrings(
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"__name__", "ALERTS",
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"alertname", "ExternalURLExists",
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"alertstate", "pending",
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"instance", "0",
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"job", "app-server",
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"templated_label", "The external URL is http://localhost:1234.",
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),
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F: 1,
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},
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}
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evalTime := time.Unix(0, 0)
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result[0].T = timestamp.FromTime(evalTime)
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result[1].T = timestamp.FromTime(evalTime)
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ng := testEngine(t)
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var filteredRes promql.Vector // After removing 'ALERTS_FOR_STATE' samples.
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res, err := ruleWithoutExternalURL.Eval(
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context.TODO(), 0, evalTime, EngineQueryFunc(ng, storage), nil, 0,
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)
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require.NoError(t, err)
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for _, smpl := range res {
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smplName := smpl.Metric.Get("__name__")
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if smplName == "ALERTS" {
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filteredRes = append(filteredRes, smpl)
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} else {
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// If not 'ALERTS', it has to be 'ALERTS_FOR_STATE'.
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require.Equal(t, "ALERTS_FOR_STATE", smplName)
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}
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}
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res, err = ruleWithExternalURL.Eval(
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context.TODO(), 0, evalTime, EngineQueryFunc(ng, storage), nil, 0,
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)
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require.NoError(t, err)
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for _, smpl := range res {
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smplName := smpl.Metric.Get("__name__")
|
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if smplName == "ALERTS" {
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filteredRes = append(filteredRes, smpl)
|
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} else {
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// If not 'ALERTS', it has to be 'ALERTS_FOR_STATE'.
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require.Equal(t, "ALERTS_FOR_STATE", smplName)
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}
|
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}
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testutil.RequireEqual(t, result, filteredRes)
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}
|
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|
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func TestAlertingRuleEmptyLabelFromTemplate(t *testing.T) {
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storage := promqltest.LoadedStorage(t, `
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load 1m
|
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http_requests{job="app-server", instance="0"} 75 85 70 70
|
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`)
|
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t.Cleanup(func() { storage.Close() })
|
|
|
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expr, err := parser.ParseExpr(`http_requests < 100`)
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require.NoError(t, err)
|
|
|
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rule := NewAlertingRule(
|
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"EmptyLabel",
|
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expr,
|
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time.Minute,
|
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0,
|
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labels.FromStrings("empty_label", ""),
|
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labels.EmptyLabels(),
|
|
labels.EmptyLabels(),
|
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"",
|
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true, log.NewNopLogger(),
|
|
)
|
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result := promql.Vector{
|
|
promql.Sample{
|
|
Metric: labels.FromStrings(
|
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"__name__", "ALERTS",
|
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"alertname", "EmptyLabel",
|
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"alertstate", "pending",
|
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"instance", "0",
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"job", "app-server",
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),
|
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F: 1,
|
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},
|
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}
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|
|
|
evalTime := time.Unix(0, 0)
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result[0].T = timestamp.FromTime(evalTime)
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|
|
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ng := testEngine(t)
|
|
|
|
var filteredRes promql.Vector // After removing 'ALERTS_FOR_STATE' samples.
|
|
res, err := rule.Eval(
|
|
context.TODO(), 0, evalTime, EngineQueryFunc(ng, storage), nil, 0,
|
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)
|
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require.NoError(t, err)
|
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for _, smpl := range res {
|
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smplName := smpl.Metric.Get("__name__")
|
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if smplName == "ALERTS" {
|
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filteredRes = append(filteredRes, smpl)
|
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} else {
|
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// If not 'ALERTS', it has to be 'ALERTS_FOR_STATE'.
|
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require.Equal(t, "ALERTS_FOR_STATE", smplName)
|
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}
|
|
}
|
|
testutil.RequireEqual(t, result, filteredRes)
|
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}
|
|
|
|
func TestAlertingRuleQueryInTemplate(t *testing.T) {
|
|
storage := promqltest.LoadedStorage(t, `
|
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load 1m
|
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http_requests{job="app-server", instance="0"} 70 85 70 70
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`)
|
|
t.Cleanup(func() { storage.Close() })
|
|
|
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expr, err := parser.ParseExpr(`sum(http_requests) < 100`)
|
|
require.NoError(t, err)
|
|
|
|
ruleWithQueryInTemplate := NewAlertingRule(
|
|
"ruleWithQueryInTemplate",
|
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expr,
|
|
time.Minute,
|
|
0,
|
|
labels.FromStrings("label", "value"),
|
|
labels.FromStrings("templated_label", `{{- with "sort(sum(http_requests) by (instance))" | query -}}
|
|
{{- range $i,$v := . -}}
|
|
instance: {{ $v.Labels.instance }}, value: {{ printf "%.0f" $v.Value }};
|
|
{{- end -}}
|
|
{{- end -}}
|
|
`),
|
|
labels.EmptyLabels(),
|
|
"",
|
|
true, log.NewNopLogger(),
|
|
)
|
|
evalTime := time.Unix(0, 0)
|
|
|
|
ng := testEngine(t)
|
|
|
|
startQueryCh := make(chan struct{})
|
|
getDoneCh := make(chan struct{})
|
|
slowQueryFunc := func(ctx context.Context, q string, ts time.Time) (promql.Vector, error) {
|
|
if q == "sort(sum(http_requests) by (instance))" {
|
|
// This is a minimum reproduction of issue 10703, expand template with query.
|
|
close(startQueryCh)
|
|
select {
|
|
case <-getDoneCh:
|
|
case <-time.After(time.Millisecond * 10):
|
|
// Assert no blocking when template expanding.
|
|
require.Fail(t, "unexpected blocking when template expanding.")
|
|
}
|
|
}
|
|
return EngineQueryFunc(ng, storage)(ctx, q, ts)
|
|
}
|
|
go func() {
|
|
<-startQueryCh
|
|
_ = ruleWithQueryInTemplate.Health()
|
|
_ = ruleWithQueryInTemplate.LastError()
|
|
_ = ruleWithQueryInTemplate.GetEvaluationDuration()
|
|
_ = ruleWithQueryInTemplate.GetEvaluationTimestamp()
|
|
close(getDoneCh)
|
|
}()
|
|
_, err = ruleWithQueryInTemplate.Eval(
|
|
context.TODO(), 0, evalTime, slowQueryFunc, nil, 0,
|
|
)
|
|
require.NoError(t, err)
|
|
}
|
|
|
|
func BenchmarkAlertingRuleAtomicField(b *testing.B) {
|
|
b.ReportAllocs()
|
|
rule := NewAlertingRule("bench", nil, 0, 0, labels.EmptyLabels(), labels.EmptyLabels(), labels.EmptyLabels(), "", true, nil)
|
|
done := make(chan struct{})
|
|
go func() {
|
|
for i := 0; i < b.N; i++ {
|
|
rule.GetEvaluationTimestamp()
|
|
}
|
|
close(done)
|
|
}()
|
|
b.RunParallel(func(pb *testing.PB) {
|
|
for pb.Next() {
|
|
rule.SetEvaluationTimestamp(time.Now())
|
|
}
|
|
})
|
|
<-done
|
|
}
|
|
|
|
func TestAlertingRuleDuplicate(t *testing.T) {
|
|
storage := teststorage.New(t)
|
|
defer storage.Close()
|
|
|
|
opts := promql.EngineOpts{
|
|
Logger: nil,
|
|
Reg: nil,
|
|
MaxSamples: 10,
|
|
Timeout: 10 * time.Second,
|
|
}
|
|
|
|
engine := promqltest.NewTestEngineWithOpts(t, opts)
|
|
ctx, cancelCtx := context.WithCancel(context.Background())
|
|
defer cancelCtx()
|
|
|
|
now := time.Now()
|
|
|
|
expr, _ := parser.ParseExpr(`vector(0) or label_replace(vector(0),"test","x","","")`)
|
|
rule := NewAlertingRule(
|
|
"foo",
|
|
expr,
|
|
time.Minute,
|
|
0,
|
|
labels.FromStrings("test", "test"),
|
|
labels.EmptyLabels(),
|
|
labels.EmptyLabels(),
|
|
"",
|
|
true, log.NewNopLogger(),
|
|
)
|
|
_, err := rule.Eval(ctx, 0, now, EngineQueryFunc(engine, storage), nil, 0)
|
|
require.Error(t, err)
|
|
require.EqualError(t, err, "vector contains metrics with the same labelset after applying alert labels")
|
|
}
|
|
|
|
func TestAlertingRuleLimit(t *testing.T) {
|
|
storage := promqltest.LoadedStorage(t, `
|
|
load 1m
|
|
metric{label="1"} 1
|
|
metric{label="2"} 1
|
|
`)
|
|
t.Cleanup(func() { storage.Close() })
|
|
|
|
tests := []struct {
|
|
limit int
|
|
err string
|
|
}{
|
|
{
|
|
limit: 0,
|
|
},
|
|
{
|
|
limit: -1,
|
|
},
|
|
{
|
|
limit: 2,
|
|
},
|
|
{
|
|
limit: 1,
|
|
err: "exceeded limit of 1 with 2 alerts",
|
|
},
|
|
}
|
|
|
|
expr, _ := parser.ParseExpr(`metric > 0`)
|
|
rule := NewAlertingRule(
|
|
"foo",
|
|
expr,
|
|
time.Minute,
|
|
0,
|
|
labels.FromStrings("test", "test"),
|
|
labels.EmptyLabels(),
|
|
labels.EmptyLabels(),
|
|
"",
|
|
true, log.NewNopLogger(),
|
|
)
|
|
|
|
evalTime := time.Unix(0, 0)
|
|
ng := testEngine(t)
|
|
for _, test := range tests {
|
|
switch _, err := rule.Eval(context.TODO(), 0, evalTime, EngineQueryFunc(ng, storage), nil, test.limit); {
|
|
case err != nil:
|
|
require.EqualError(t, err, test.err)
|
|
case test.err != "":
|
|
t.Errorf("Expected error %s, got none", test.err)
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestQueryForStateSeries(t *testing.T) {
|
|
testError := errors.New("test error")
|
|
|
|
type testInput struct {
|
|
selectMockFunction func(sortSeries bool, hints *storage.SelectHints, matchers ...*labels.Matcher) storage.SeriesSet
|
|
expectedSeries storage.Series
|
|
expectedError error
|
|
}
|
|
|
|
tests := []testInput{
|
|
// Test for empty series.
|
|
{
|
|
selectMockFunction: func(sortSeries bool, hints *storage.SelectHints, matchers ...*labels.Matcher) storage.SeriesSet {
|
|
return storage.EmptySeriesSet()
|
|
},
|
|
expectedSeries: nil,
|
|
expectedError: nil,
|
|
},
|
|
// Test for error series.
|
|
{
|
|
selectMockFunction: func(sortSeries bool, hints *storage.SelectHints, matchers ...*labels.Matcher) storage.SeriesSet {
|
|
return storage.ErrSeriesSet(testError)
|
|
},
|
|
expectedSeries: nil,
|
|
expectedError: testError,
|
|
},
|
|
// Test for mock series.
|
|
{
|
|
selectMockFunction: func(sortSeries bool, hints *storage.SelectHints, matchers ...*labels.Matcher) storage.SeriesSet {
|
|
return storage.TestSeriesSet(storage.MockSeries(
|
|
[]int64{1, 2, 3},
|
|
[]float64{1, 2, 3},
|
|
[]string{"__name__", "ALERTS_FOR_STATE", "alertname", "TestRule", "severity", "critical"},
|
|
))
|
|
},
|
|
expectedSeries: storage.MockSeries(
|
|
[]int64{1, 2, 3},
|
|
[]float64{1, 2, 3},
|
|
[]string{"__name__", "ALERTS_FOR_STATE", "alertname", "TestRule", "severity", "critical"},
|
|
),
|
|
expectedError: nil,
|
|
},
|
|
}
|
|
|
|
testFunc := func(tst testInput) {
|
|
querier := &storage.MockQuerier{
|
|
SelectMockFunction: tst.selectMockFunction,
|
|
}
|
|
|
|
rule := NewAlertingRule(
|
|
"TestRule",
|
|
nil,
|
|
time.Minute,
|
|
0,
|
|
labels.FromStrings("severity", "critical"),
|
|
labels.EmptyLabels(), labels.EmptyLabels(), "", true, nil,
|
|
)
|
|
|
|
sample := rule.forStateSample(nil, time.Time{}, 0)
|
|
|
|
seriesSet, err := rule.QueryForStateSeries(context.Background(), querier)
|
|
|
|
var series storage.Series
|
|
for seriesSet.Next() {
|
|
if seriesSet.At().Labels().Len() == sample.Metric.Len() {
|
|
series = seriesSet.At()
|
|
break
|
|
}
|
|
}
|
|
|
|
require.Equal(t, tst.expectedSeries, series)
|
|
require.Equal(t, tst.expectedError, err)
|
|
}
|
|
|
|
for _, tst := range tests {
|
|
testFunc(tst)
|
|
}
|
|
}
|
|
|
|
// TestSendAlertsDontAffectActiveAlerts tests a fix for https://github.com/prometheus/prometheus/issues/11424.
|
|
func TestSendAlertsDontAffectActiveAlerts(t *testing.T) {
|
|
rule := NewAlertingRule(
|
|
"TestRule",
|
|
nil,
|
|
time.Minute,
|
|
0,
|
|
labels.FromStrings("severity", "critical"),
|
|
labels.EmptyLabels(), labels.EmptyLabels(), "", true, nil,
|
|
)
|
|
|
|
// Set an active alert.
|
|
lbls := labels.FromStrings("a1", "1")
|
|
h := lbls.Hash()
|
|
al := &Alert{State: StateFiring, Labels: lbls, ActiveAt: time.Now()}
|
|
rule.active[h] = al
|
|
|
|
expr, err := parser.ParseExpr("foo")
|
|
require.NoError(t, err)
|
|
rule.vector = expr
|
|
|
|
// The relabel rule reproduced the bug here.
|
|
opts := notifier.Options{
|
|
QueueCapacity: 1,
|
|
RelabelConfigs: []*relabel.Config{
|
|
{
|
|
SourceLabels: model.LabelNames{"a1"},
|
|
Regex: relabel.MustNewRegexp("(.+)"),
|
|
TargetLabel: "a1",
|
|
Replacement: "bug",
|
|
Action: "replace",
|
|
},
|
|
},
|
|
}
|
|
nm := notifier.NewManager(&opts, log.NewNopLogger())
|
|
|
|
f := SendAlerts(nm, "")
|
|
notifyFunc := func(ctx context.Context, expr string, alerts ...*Alert) {
|
|
require.Len(t, alerts, 1)
|
|
require.Equal(t, al, alerts[0])
|
|
f(ctx, expr, alerts...)
|
|
}
|
|
|
|
rule.sendAlerts(context.Background(), time.Now(), 0, 0, notifyFunc)
|
|
nm.Stop()
|
|
|
|
// The relabel rule changes a1=1 to a1=bug.
|
|
// But the labels with the AlertingRule should not be changed.
|
|
testutil.RequireEqual(t, labels.FromStrings("a1", "1"), rule.active[h].Labels)
|
|
}
|
|
|
|
func TestKeepFiringFor(t *testing.T) {
|
|
storage := promqltest.LoadedStorage(t, `
|
|
load 1m
|
|
http_requests{job="app-server", instance="0"} 75 85 70 70 10x5
|
|
`)
|
|
t.Cleanup(func() { storage.Close() })
|
|
|
|
expr, err := parser.ParseExpr(`http_requests > 50`)
|
|
require.NoError(t, err)
|
|
|
|
rule := NewAlertingRule(
|
|
"HTTPRequestRateHigh",
|
|
expr,
|
|
time.Minute,
|
|
time.Minute,
|
|
labels.EmptyLabels(),
|
|
labels.EmptyLabels(), labels.EmptyLabels(), "", true, nil,
|
|
)
|
|
|
|
results := []promql.Vector{
|
|
{
|
|
promql.Sample{
|
|
Metric: labels.FromStrings(
|
|
"__name__", "ALERTS",
|
|
"alertname", "HTTPRequestRateHigh",
|
|
"alertstate", "pending",
|
|
"instance", "0",
|
|
"job", "app-server",
|
|
),
|
|
F: 1,
|
|
},
|
|
},
|
|
{
|
|
promql.Sample{
|
|
Metric: labels.FromStrings(
|
|
"__name__", "ALERTS",
|
|
"alertname", "HTTPRequestRateHigh",
|
|
"alertstate", "firing",
|
|
"instance", "0",
|
|
"job", "app-server",
|
|
),
|
|
F: 1,
|
|
},
|
|
},
|
|
{
|
|
promql.Sample{
|
|
Metric: labels.FromStrings(
|
|
"__name__", "ALERTS",
|
|
"alertname", "HTTPRequestRateHigh",
|
|
"alertstate", "firing",
|
|
"instance", "0",
|
|
"job", "app-server",
|
|
),
|
|
F: 1,
|
|
},
|
|
},
|
|
{
|
|
promql.Sample{
|
|
Metric: labels.FromStrings(
|
|
"__name__", "ALERTS",
|
|
"alertname", "HTTPRequestRateHigh",
|
|
"alertstate", "firing",
|
|
"instance", "0",
|
|
"job", "app-server",
|
|
),
|
|
F: 1,
|
|
},
|
|
},
|
|
// From now on the alert should keep firing.
|
|
{
|
|
promql.Sample{
|
|
Metric: labels.FromStrings(
|
|
"__name__", "ALERTS",
|
|
"alertname", "HTTPRequestRateHigh",
|
|
"alertstate", "firing",
|
|
"instance", "0",
|
|
"job", "app-server",
|
|
),
|
|
F: 1,
|
|
},
|
|
},
|
|
}
|
|
|
|
ng := testEngine(t)
|
|
baseTime := time.Unix(0, 0)
|
|
for i, result := range results {
|
|
t.Logf("case %d", i)
|
|
evalTime := baseTime.Add(time.Duration(i) * time.Minute)
|
|
result[0].T = timestamp.FromTime(evalTime)
|
|
res, err := rule.Eval(context.TODO(), 0, evalTime, EngineQueryFunc(ng, storage), nil, 0)
|
|
require.NoError(t, err)
|
|
|
|
var filteredRes promql.Vector // After removing 'ALERTS_FOR_STATE' samples.
|
|
for _, smpl := range res {
|
|
smplName := smpl.Metric.Get("__name__")
|
|
if smplName == "ALERTS" {
|
|
filteredRes = append(filteredRes, smpl)
|
|
} else {
|
|
// If not 'ALERTS', it has to be 'ALERTS_FOR_STATE'.
|
|
require.Equal(t, "ALERTS_FOR_STATE", smplName)
|
|
}
|
|
}
|
|
|
|
testutil.RequireEqual(t, result, filteredRes)
|
|
}
|
|
evalTime := baseTime.Add(time.Duration(len(results)) * time.Minute)
|
|
res, err := rule.Eval(context.TODO(), 0, evalTime, EngineQueryFunc(ng, storage), nil, 0)
|
|
require.NoError(t, err)
|
|
require.Empty(t, res)
|
|
}
|
|
|
|
func TestPendingAndKeepFiringFor(t *testing.T) {
|
|
storage := promqltest.LoadedStorage(t, `
|
|
load 1m
|
|
http_requests{job="app-server", instance="0"} 75 10x10
|
|
`)
|
|
t.Cleanup(func() { storage.Close() })
|
|
|
|
expr, err := parser.ParseExpr(`http_requests > 50`)
|
|
require.NoError(t, err)
|
|
|
|
rule := NewAlertingRule(
|
|
"HTTPRequestRateHigh",
|
|
expr,
|
|
time.Minute,
|
|
time.Minute,
|
|
labels.EmptyLabels(),
|
|
labels.EmptyLabels(), labels.EmptyLabels(), "", true, nil,
|
|
)
|
|
|
|
result := promql.Sample{
|
|
Metric: labels.FromStrings(
|
|
"__name__", "ALERTS",
|
|
"alertname", "HTTPRequestRateHigh",
|
|
"alertstate", "pending",
|
|
"instance", "0",
|
|
"job", "app-server",
|
|
),
|
|
F: 1,
|
|
}
|
|
|
|
ng := testEngine(t)
|
|
baseTime := time.Unix(0, 0)
|
|
result.T = timestamp.FromTime(baseTime)
|
|
res, err := rule.Eval(context.TODO(), 0, baseTime, EngineQueryFunc(ng, storage), nil, 0)
|
|
require.NoError(t, err)
|
|
|
|
require.Len(t, res, 2)
|
|
for _, smpl := range res {
|
|
smplName := smpl.Metric.Get("__name__")
|
|
if smplName == "ALERTS" {
|
|
testutil.RequireEqual(t, result, smpl)
|
|
} else {
|
|
// If not 'ALERTS', it has to be 'ALERTS_FOR_STATE'.
|
|
require.Equal(t, "ALERTS_FOR_STATE", smplName)
|
|
}
|
|
}
|
|
|
|
evalTime := baseTime.Add(time.Minute)
|
|
res, err = rule.Eval(context.TODO(), 0, evalTime, EngineQueryFunc(ng, storage), nil, 0)
|
|
require.NoError(t, err)
|
|
require.Empty(t, res)
|
|
}
|
|
|
|
// TestAlertingEvalWithOrigin checks that the alerting rule details are passed through the context.
|
|
func TestAlertingEvalWithOrigin(t *testing.T) {
|
|
ctx := context.Background()
|
|
now := time.Now()
|
|
|
|
const (
|
|
name = "my-recording-rule"
|
|
query = `count(metric{foo="bar"}) > 0`
|
|
)
|
|
var (
|
|
detail RuleDetail
|
|
lbs = labels.FromStrings("test", "test")
|
|
)
|
|
|
|
expr, err := parser.ParseExpr(query)
|
|
require.NoError(t, err)
|
|
|
|
rule := NewAlertingRule(
|
|
name,
|
|
expr,
|
|
time.Second,
|
|
time.Minute,
|
|
lbs,
|
|
labels.EmptyLabels(),
|
|
labels.EmptyLabels(),
|
|
"",
|
|
true, log.NewNopLogger(),
|
|
)
|
|
|
|
_, err = rule.Eval(ctx, 0, now, func(ctx context.Context, qs string, _ time.Time) (promql.Vector, error) {
|
|
detail = FromOriginContext(ctx)
|
|
return nil, nil
|
|
}, nil, 0)
|
|
|
|
require.NoError(t, err)
|
|
require.Equal(t, detail, NewRuleDetail(rule))
|
|
}
|
|
|
|
func TestAlertingRule_SetNoDependentRules(t *testing.T) {
|
|
rule := NewAlertingRule(
|
|
"test",
|
|
&parser.NumberLiteral{Val: 1},
|
|
time.Minute,
|
|
0,
|
|
labels.FromStrings("test", "test"),
|
|
labels.EmptyLabels(),
|
|
labels.EmptyLabels(),
|
|
"",
|
|
true, log.NewNopLogger(),
|
|
)
|
|
require.False(t, rule.NoDependentRules())
|
|
|
|
rule.SetNoDependentRules(false)
|
|
require.False(t, rule.NoDependentRules())
|
|
|
|
rule.SetNoDependentRules(true)
|
|
require.True(t, rule.NoDependentRules())
|
|
}
|
|
|
|
func TestAlertingRule_SetNoDependencyRules(t *testing.T) {
|
|
rule := NewAlertingRule(
|
|
"test",
|
|
&parser.NumberLiteral{Val: 1},
|
|
time.Minute,
|
|
0,
|
|
labels.FromStrings("test", "test"),
|
|
labels.EmptyLabels(),
|
|
labels.EmptyLabels(),
|
|
"",
|
|
true, log.NewNopLogger(),
|
|
)
|
|
require.False(t, rule.NoDependencyRules())
|
|
|
|
rule.SetNoDependencyRules(false)
|
|
require.False(t, rule.NoDependencyRules())
|
|
|
|
rule.SetNoDependencyRules(true)
|
|
require.True(t, rule.NoDependencyRules())
|
|
}
|
|
|
|
func TestAlertingRule_ActiveAlertsCount(t *testing.T) {
|
|
rule := NewAlertingRule(
|
|
"TestRule",
|
|
nil,
|
|
time.Minute,
|
|
0,
|
|
labels.FromStrings("severity", "critical"),
|
|
labels.EmptyLabels(), labels.EmptyLabels(), "", true, nil,
|
|
)
|
|
|
|
require.Equal(t, 0, rule.ActiveAlertsCount())
|
|
|
|
// Set an active alert.
|
|
lbls := labels.FromStrings("a1", "1")
|
|
h := lbls.Hash()
|
|
al := &Alert{State: StateFiring, Labels: lbls, ActiveAt: time.Now()}
|
|
rule.active[h] = al
|
|
|
|
require.Equal(t, 1, rule.ActiveAlertsCount())
|
|
}
|