682 lines
18 KiB
Go
682 lines
18 KiB
Go
// Copyright 2015 Prometheus Team
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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 notify
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import (
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"errors"
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"fmt"
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"io"
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"reflect"
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"testing"
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"time"
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"github.com/go-kit/kit/log"
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"github.com/prometheus/common/model"
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"github.com/stretchr/testify/require"
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"golang.org/x/net/context"
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"github.com/prometheus/alertmanager/nflog"
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"github.com/prometheus/alertmanager/nflog/nflogpb"
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"github.com/prometheus/alertmanager/silence"
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"github.com/prometheus/alertmanager/silence/silencepb"
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"github.com/prometheus/alertmanager/types"
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)
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type notifierConfigFunc func() bool
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func (f notifierConfigFunc) SendResolved() bool {
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return f()
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}
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type notifierFunc func(ctx context.Context, alerts ...*types.Alert) (bool, error)
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func (f notifierFunc) Notify(ctx context.Context, alerts ...*types.Alert) (bool, error) {
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return f(ctx, alerts...)
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}
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type failStage struct{}
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func (s failStage) Exec(ctx context.Context, l log.Logger, as ...*types.Alert) (context.Context, []*types.Alert, error) {
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return ctx, nil, fmt.Errorf("some error")
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}
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type testNflog struct {
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qres []*nflogpb.Entry
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qerr error
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logFunc func(r *nflogpb.Receiver, gkey string, firingAlerts, resolvedAlerts []uint64) error
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}
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func (l *testNflog) Query(p ...nflog.QueryParam) ([]*nflogpb.Entry, error) {
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return l.qres, l.qerr
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}
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func (l *testNflog) Log(r *nflogpb.Receiver, gkey string, firingAlerts, resolvedAlerts []uint64) error {
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return l.logFunc(r, gkey, firingAlerts, resolvedAlerts)
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}
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func (l *testNflog) GC() (int, error) {
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return 0, nil
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}
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func (l *testNflog) Snapshot(w io.Writer) (int, error) {
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return 0, nil
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}
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func alertHashSet(hashes ...uint64) map[uint64]struct{} {
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res := map[uint64]struct{}{}
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for _, h := range hashes {
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res[h] = struct{}{}
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}
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return res
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}
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func TestDedupStageNeedsUpdate(t *testing.T) {
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now := utcNow()
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cases := []struct {
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entry *nflogpb.Entry
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firingAlerts map[uint64]struct{}
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resolvedAlerts map[uint64]struct{}
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repeat time.Duration
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resolve bool
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res bool
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}{
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{
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// No matching nflog entry should update.
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entry: nil,
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firingAlerts: alertHashSet(2, 3, 4),
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res: true,
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}, {
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// No matching nflog entry shouldn't update if no alert fires.
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entry: nil,
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resolvedAlerts: alertHashSet(2, 3, 4),
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res: false,
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}, {
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// Different sets of firing alerts should update.
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entry: &nflogpb.Entry{FiringAlerts: []uint64{1, 2, 3}},
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firingAlerts: alertHashSet(2, 3, 4),
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res: true,
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}, {
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// Zero timestamp in the nflog entry should always update.
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entry: &nflogpb.Entry{
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FiringAlerts: []uint64{1, 2, 3},
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Timestamp: time.Time{},
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},
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firingAlerts: alertHashSet(1, 2, 3),
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res: true,
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}, {
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// Identical sets of alerts shouldn't update before repeat_interval.
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entry: &nflogpb.Entry{
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FiringAlerts: []uint64{1, 2, 3},
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Timestamp: now.Add(-9 * time.Minute),
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},
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repeat: 10 * time.Minute,
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firingAlerts: alertHashSet(1, 2, 3),
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res: false,
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}, {
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// Identical sets of alerts should update after repeat_interval.
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entry: &nflogpb.Entry{
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FiringAlerts: []uint64{1, 2, 3},
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Timestamp: now.Add(-11 * time.Minute),
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},
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repeat: 10 * time.Minute,
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firingAlerts: alertHashSet(1, 2, 3),
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res: true,
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}, {
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// Different sets of resolved alerts without firing alerts shouldn't update after repeat_interval.
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entry: &nflogpb.Entry{
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ResolvedAlerts: []uint64{1, 2, 3},
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Timestamp: now.Add(-11 * time.Minute),
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},
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repeat: 10 * time.Minute,
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resolvedAlerts: alertHashSet(3, 4, 5),
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resolve: true,
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res: false,
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}, {
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// Different sets of resolved alerts shouldn't update when resolve is false.
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entry: &nflogpb.Entry{
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FiringAlerts: []uint64{1, 2},
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ResolvedAlerts: []uint64{3},
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Timestamp: now.Add(-9 * time.Minute),
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},
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repeat: 10 * time.Minute,
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firingAlerts: alertHashSet(1),
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resolvedAlerts: alertHashSet(2, 3),
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resolve: false,
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res: false,
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}, {
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// Different sets of resolved alerts should update when resolve is true.
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entry: &nflogpb.Entry{
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FiringAlerts: []uint64{1, 2},
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ResolvedAlerts: []uint64{3},
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Timestamp: now.Add(-9 * time.Minute),
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},
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repeat: 10 * time.Minute,
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firingAlerts: alertHashSet(1),
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resolvedAlerts: alertHashSet(2, 3),
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resolve: true,
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res: true,
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}, {
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// Empty set of firing alerts should update when resolve is false.
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entry: &nflogpb.Entry{
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FiringAlerts: []uint64{1, 2},
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ResolvedAlerts: []uint64{3},
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Timestamp: now.Add(-9 * time.Minute),
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},
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repeat: 10 * time.Minute,
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firingAlerts: alertHashSet(),
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resolvedAlerts: alertHashSet(1, 2, 3),
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resolve: false,
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res: true,
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}, {
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// Empty set of firing alerts should update when resolve is true.
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entry: &nflogpb.Entry{
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FiringAlerts: []uint64{1, 2},
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ResolvedAlerts: []uint64{3},
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Timestamp: now.Add(-9 * time.Minute),
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},
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repeat: 10 * time.Minute,
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firingAlerts: alertHashSet(),
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resolvedAlerts: alertHashSet(1, 2, 3),
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resolve: true,
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res: true,
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},
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}
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for i, c := range cases {
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t.Log("case", i)
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s := &DedupStage{
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now: func() time.Time { return now },
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conf: notifierConfigFunc(func() bool { return c.resolve }),
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}
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res := s.needsUpdate(c.entry, c.firingAlerts, c.resolvedAlerts, c.repeat)
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require.Equal(t, c.res, res)
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}
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}
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func TestDedupStage(t *testing.T) {
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i := 0
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now := utcNow()
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s := &DedupStage{
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hash: func(a *types.Alert) uint64 {
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res := uint64(i)
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i++
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return res
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},
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now: func() time.Time {
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return now
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},
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conf: notifierConfigFunc(func() bool { return false }),
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}
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ctx := context.Background()
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_, _, err := s.Exec(ctx, log.NewNopLogger())
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require.EqualError(t, err, "group key missing")
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ctx = WithGroupKey(ctx, "1")
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_, _, err = s.Exec(ctx, log.NewNopLogger())
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require.EqualError(t, err, "repeat interval missing")
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ctx = WithRepeatInterval(ctx, time.Hour)
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alerts := []*types.Alert{{}, {}, {}}
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// Must catch notification log query errors.
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s.nflog = &testNflog{
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qerr: errors.New("bad things"),
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}
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ctx, _, err = s.Exec(ctx, log.NewNopLogger(), alerts...)
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require.EqualError(t, err, "bad things")
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// ... but skip ErrNotFound.
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s.nflog = &testNflog{
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qerr: nflog.ErrNotFound,
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}
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ctx, res, err := s.Exec(ctx, log.NewNopLogger(), alerts...)
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require.NoError(t, err, "unexpected error on not found log entry")
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require.Equal(t, alerts, res, "input alerts differ from result alerts")
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s.nflog = &testNflog{
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qerr: nil,
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qres: []*nflogpb.Entry{
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{FiringAlerts: []uint64{0, 1, 2}},
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{FiringAlerts: []uint64{1, 2, 3}},
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},
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}
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ctx, _, err = s.Exec(ctx, log.NewNopLogger(), alerts...)
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require.Contains(t, err.Error(), "result size")
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// Must return no error and no alerts no need to update.
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i = 0
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s.nflog = &testNflog{
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qerr: nflog.ErrNotFound,
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qres: []*nflogpb.Entry{
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{
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FiringAlerts: []uint64{0, 1, 2},
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Timestamp: now,
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},
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},
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}
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ctx, res, err = s.Exec(ctx, log.NewNopLogger(), alerts...)
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require.NoError(t, err)
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require.Nil(t, res, "unexpected alerts returned")
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// Must return no error and all input alerts on changes.
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i = 0
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s.nflog = &testNflog{
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qerr: nil,
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qres: []*nflogpb.Entry{
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{
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FiringAlerts: []uint64{1, 2, 3, 4},
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Timestamp: now,
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},
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},
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}
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_, res, err = s.Exec(ctx, log.NewNopLogger(), alerts...)
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require.NoError(t, err)
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require.Equal(t, alerts, res, "unexpected alerts returned")
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}
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func TestMultiStage(t *testing.T) {
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var (
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alerts1 = []*types.Alert{{}}
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alerts2 = []*types.Alert{{}, {}}
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alerts3 = []*types.Alert{{}, {}, {}}
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)
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stage := MultiStage{
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StageFunc(func(ctx context.Context, l log.Logger, alerts ...*types.Alert) (context.Context, []*types.Alert, error) {
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if !reflect.DeepEqual(alerts, alerts1) {
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t.Fatal("Input not equal to input of MultiStage")
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}
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ctx = context.WithValue(ctx, "key", "value")
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return ctx, alerts2, nil
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}),
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StageFunc(func(ctx context.Context, l log.Logger, alerts ...*types.Alert) (context.Context, []*types.Alert, error) {
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if !reflect.DeepEqual(alerts, alerts2) {
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t.Fatal("Input not equal to output of previous stage")
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}
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v, ok := ctx.Value("key").(string)
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if !ok || v != "value" {
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t.Fatalf("Expected value %q for key %q but got %q", "value", "key", v)
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}
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return ctx, alerts3, nil
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}),
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}
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_, alerts, err := stage.Exec(context.Background(), log.NewNopLogger(), alerts1...)
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if err != nil {
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t.Fatalf("Exec failed: %s", err)
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}
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if !reflect.DeepEqual(alerts, alerts3) {
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t.Fatal("Output of MultiStage is not equal to the output of the last stage")
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}
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}
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func TestMultiStageFailure(t *testing.T) {
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var (
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ctx = context.Background()
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s1 = failStage{}
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stage = MultiStage{s1}
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)
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_, _, err := stage.Exec(ctx, log.NewNopLogger(), nil)
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if err.Error() != "some error" {
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t.Fatal("Errors were not propagated correctly by MultiStage")
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}
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}
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func TestRoutingStage(t *testing.T) {
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var (
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alerts1 = []*types.Alert{{}}
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alerts2 = []*types.Alert{{}, {}}
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)
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stage := RoutingStage{
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"name": StageFunc(func(ctx context.Context, l log.Logger, alerts ...*types.Alert) (context.Context, []*types.Alert, error) {
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if !reflect.DeepEqual(alerts, alerts1) {
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t.Fatal("Input not equal to input of RoutingStage")
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}
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return ctx, alerts2, nil
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}),
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"not": failStage{},
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}
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ctx := WithReceiverName(context.Background(), "name")
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_, alerts, err := stage.Exec(ctx, log.NewNopLogger(), alerts1...)
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if err != nil {
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t.Fatalf("Exec failed: %s", err)
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}
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if !reflect.DeepEqual(alerts, alerts2) {
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t.Fatal("Output of RoutingStage is not equal to the output of the inner stage")
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}
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}
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func TestRetryStageWithError(t *testing.T) {
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fail, retry := true, true
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sent := []*types.Alert{}
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i := Integration{
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notifier: notifierFunc(func(ctx context.Context, alerts ...*types.Alert) (bool, error) {
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if fail {
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fail = false
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return retry, errors.New("fail to deliver notification")
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}
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sent = append(sent, alerts...)
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return false, nil
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}),
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conf: notifierConfigFunc(func() bool { return false }),
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}
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r := RetryStage{
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integration: i,
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}
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alerts := []*types.Alert{
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&types.Alert{
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Alert: model.Alert{
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EndsAt: time.Now().Add(time.Hour),
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},
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},
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}
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ctx := context.Background()
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ctx = WithFiringAlerts(ctx, []uint64{0})
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// Notify with a recoverable error should retry and succeed.
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resctx, res, err := r.Exec(ctx, log.NewNopLogger(), alerts...)
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require.Nil(t, err)
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require.Equal(t, alerts, res)
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require.Equal(t, alerts, sent)
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require.NotNil(t, resctx)
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// Notify with an unrecoverable error should fail.
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sent = sent[:0]
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fail = true
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retry = false
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resctx, _, err = r.Exec(ctx, log.NewNopLogger(), alerts...)
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require.NotNil(t, err)
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require.NotNil(t, resctx)
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}
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func TestRetryStageNoResolved(t *testing.T) {
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sent := []*types.Alert{}
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i := Integration{
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notifier: notifierFunc(func(ctx context.Context, alerts ...*types.Alert) (bool, error) {
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sent = append(sent, alerts...)
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return false, nil
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}),
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conf: notifierConfigFunc(func() bool { return false }),
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}
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r := RetryStage{
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integration: i,
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}
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alerts := []*types.Alert{
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&types.Alert{
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Alert: model.Alert{
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EndsAt: time.Now().Add(-time.Hour),
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},
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},
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&types.Alert{
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Alert: model.Alert{
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EndsAt: time.Now().Add(time.Hour),
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},
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},
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}
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ctx := context.Background()
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resctx, res, err := r.Exec(ctx, log.NewNopLogger(), alerts...)
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require.EqualError(t, err, "firing alerts missing")
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require.Nil(t, res)
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require.NotNil(t, resctx)
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ctx = WithFiringAlerts(ctx, []uint64{0})
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resctx, res, err = r.Exec(ctx, log.NewNopLogger(), alerts...)
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require.Nil(t, err)
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require.Equal(t, alerts, res)
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require.Equal(t, []*types.Alert{alerts[1]}, sent)
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require.NotNil(t, resctx)
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// All alerts are resolved.
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sent = sent[:0]
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ctx = WithFiringAlerts(ctx, []uint64{})
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alerts[1].Alert.EndsAt = time.Now().Add(-time.Hour)
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resctx, res, err = r.Exec(ctx, log.NewNopLogger(), alerts...)
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require.Nil(t, err)
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require.Equal(t, alerts, res)
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require.Equal(t, []*types.Alert{}, sent)
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require.NotNil(t, resctx)
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}
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func TestRetryStageSendResolved(t *testing.T) {
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sent := []*types.Alert{}
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i := Integration{
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notifier: notifierFunc(func(ctx context.Context, alerts ...*types.Alert) (bool, error) {
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sent = append(sent, alerts...)
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return false, nil
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}),
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conf: notifierConfigFunc(func() bool { return true }),
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}
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r := RetryStage{
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integration: i,
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}
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alerts := []*types.Alert{
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&types.Alert{
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Alert: model.Alert{
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EndsAt: time.Now().Add(-time.Hour),
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},
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},
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&types.Alert{
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Alert: model.Alert{
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EndsAt: time.Now().Add(time.Hour),
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},
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},
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}
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ctx := context.Background()
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ctx = WithFiringAlerts(ctx, []uint64{0})
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resctx, res, err := r.Exec(ctx, log.NewNopLogger(), alerts...)
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require.Nil(t, err)
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require.Equal(t, alerts, res)
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require.Equal(t, alerts, sent)
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require.NotNil(t, resctx)
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// All alerts are resolved.
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sent = sent[:0]
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ctx = WithFiringAlerts(ctx, []uint64{})
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alerts[1].Alert.EndsAt = time.Now().Add(-time.Hour)
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resctx, res, err = r.Exec(ctx, log.NewNopLogger(), alerts...)
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require.Nil(t, err)
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require.Equal(t, alerts, res)
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require.Equal(t, alerts, sent)
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require.NotNil(t, resctx)
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}
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func TestSetNotifiesStage(t *testing.T) {
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tnflog := &testNflog{}
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s := &SetNotifiesStage{
|
|
recv: &nflogpb.Receiver{GroupName: "test"},
|
|
nflog: tnflog,
|
|
}
|
|
alerts := []*types.Alert{{}, {}, {}}
|
|
ctx := context.Background()
|
|
|
|
resctx, res, err := s.Exec(ctx, log.NewNopLogger(), alerts...)
|
|
require.EqualError(t, err, "group key missing")
|
|
require.Nil(t, res)
|
|
require.NotNil(t, resctx)
|
|
|
|
ctx = WithGroupKey(ctx, "1")
|
|
|
|
resctx, res, err = s.Exec(ctx, log.NewNopLogger(), alerts...)
|
|
require.EqualError(t, err, "firing alerts missing")
|
|
require.Nil(t, res)
|
|
require.NotNil(t, resctx)
|
|
|
|
ctx = WithFiringAlerts(ctx, []uint64{0, 1, 2})
|
|
|
|
resctx, res, err = s.Exec(ctx, log.NewNopLogger(), alerts...)
|
|
require.EqualError(t, err, "resolved alerts missing")
|
|
require.Nil(t, res)
|
|
require.NotNil(t, resctx)
|
|
|
|
ctx = WithResolvedAlerts(ctx, []uint64{})
|
|
|
|
tnflog.logFunc = func(r *nflogpb.Receiver, gkey string, firingAlerts, resolvedAlerts []uint64) error {
|
|
require.Equal(t, s.recv, r)
|
|
require.Equal(t, "1", gkey)
|
|
require.Equal(t, []uint64{0, 1, 2}, firingAlerts)
|
|
require.Equal(t, []uint64{}, resolvedAlerts)
|
|
return nil
|
|
}
|
|
resctx, res, err = s.Exec(ctx, log.NewNopLogger(), alerts...)
|
|
require.Nil(t, err)
|
|
require.Equal(t, alerts, res)
|
|
require.NotNil(t, resctx)
|
|
|
|
ctx = WithFiringAlerts(ctx, []uint64{})
|
|
ctx = WithResolvedAlerts(ctx, []uint64{0, 1, 2})
|
|
|
|
tnflog.logFunc = func(r *nflogpb.Receiver, gkey string, firingAlerts, resolvedAlerts []uint64) error {
|
|
require.Equal(t, s.recv, r)
|
|
require.Equal(t, "1", gkey)
|
|
require.Equal(t, []uint64{}, firingAlerts)
|
|
require.Equal(t, []uint64{0, 1, 2}, resolvedAlerts)
|
|
return nil
|
|
}
|
|
resctx, res, err = s.Exec(ctx, log.NewNopLogger(), alerts...)
|
|
require.Nil(t, err)
|
|
require.Equal(t, alerts, res)
|
|
require.NotNil(t, resctx)
|
|
}
|
|
|
|
func TestSilenceStage(t *testing.T) {
|
|
silences, err := silence.New(silence.Options{})
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
if _, err := silences.Set(&silencepb.Silence{
|
|
EndsAt: utcNow().Add(time.Hour),
|
|
Matchers: []*silencepb.Matcher{{Name: "mute", Pattern: "me"}},
|
|
}); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
marker := types.NewMarker()
|
|
silencer := NewSilenceStage(silences, marker)
|
|
|
|
in := []model.LabelSet{
|
|
{},
|
|
{"test": "set"},
|
|
{"mute": "me"},
|
|
{"foo": "bar", "test": "set"},
|
|
{"foo": "bar", "mute": "me"},
|
|
{},
|
|
{"not": "muted"},
|
|
}
|
|
out := []model.LabelSet{
|
|
{},
|
|
{"test": "set"},
|
|
{"foo": "bar", "test": "set"},
|
|
{},
|
|
{"not": "muted"},
|
|
}
|
|
|
|
var inAlerts []*types.Alert
|
|
for _, lset := range in {
|
|
inAlerts = append(inAlerts, &types.Alert{
|
|
Alert: model.Alert{Labels: lset},
|
|
})
|
|
}
|
|
|
|
// Set the second alert as previously silenced. It is expected to have
|
|
// the WasSilenced flag set to true afterwards.
|
|
marker.SetSilenced(inAlerts[1].Fingerprint(), "123")
|
|
|
|
_, alerts, err := silencer.Exec(nil, log.NewNopLogger(), inAlerts...)
|
|
if err != nil {
|
|
t.Fatalf("Exec failed: %s", err)
|
|
}
|
|
|
|
var got []model.LabelSet
|
|
for _, a := range alerts {
|
|
got = append(got, a.Labels)
|
|
}
|
|
|
|
if !reflect.DeepEqual(got, out) {
|
|
t.Fatalf("Muting failed, expected: %v\ngot %v", out, got)
|
|
}
|
|
}
|
|
|
|
func TestInhibitStage(t *testing.T) {
|
|
// Mute all label sets that have a "mute" key.
|
|
muter := types.MuteFunc(func(lset model.LabelSet) bool {
|
|
_, ok := lset["mute"]
|
|
return ok
|
|
})
|
|
|
|
inhibitor := NewInhibitStage(muter)
|
|
|
|
in := []model.LabelSet{
|
|
{},
|
|
{"test": "set"},
|
|
{"mute": "me"},
|
|
{"foo": "bar", "test": "set"},
|
|
{"foo": "bar", "mute": "me"},
|
|
{},
|
|
{"not": "muted"},
|
|
}
|
|
out := []model.LabelSet{
|
|
{},
|
|
{"test": "set"},
|
|
{"foo": "bar", "test": "set"},
|
|
{},
|
|
{"not": "muted"},
|
|
}
|
|
|
|
var inAlerts []*types.Alert
|
|
for _, lset := range in {
|
|
inAlerts = append(inAlerts, &types.Alert{
|
|
Alert: model.Alert{Labels: lset},
|
|
})
|
|
}
|
|
|
|
_, alerts, err := inhibitor.Exec(nil, log.NewNopLogger(), inAlerts...)
|
|
if err != nil {
|
|
t.Fatalf("Exec failed: %s", err)
|
|
}
|
|
|
|
var got []model.LabelSet
|
|
for _, a := range alerts {
|
|
got = append(got, a.Labels)
|
|
}
|
|
|
|
if !reflect.DeepEqual(got, out) {
|
|
t.Fatalf("Muting failed, expected: %v\ngot %v", out, got)
|
|
}
|
|
}
|