542 lines
13 KiB
Go
542 lines
13 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/golang/protobuf/ptypes"
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"github.com/golang/protobuf/ptypes/timestamp"
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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 mustTimestampProto(ts time.Time) *timestamp.Timestamp {
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tspb, err := ptypes.TimestampProto(ts)
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if err != nil {
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panic(err)
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}
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return tspb
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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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repeat time.Duration
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res bool
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resErr bool
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}{
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{
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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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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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entry: &nflogpb.Entry{
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FiringAlerts: []uint64{1, 2, 3},
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Timestamp: time.Time{}, // zero timestamp should always update
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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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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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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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}
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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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}
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ok, err := s.needsUpdate(c.entry, c.firingAlerts, nil, c.repeat)
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if c.resErr {
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require.Error(t, err)
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} else {
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require.NoError(t, err)
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}
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require.Equal(t, c.res, ok)
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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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}
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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, res, 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, res, 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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ctx, 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 TestIntegrationNoResolved(t *testing.T) {
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res := []*types.Alert{}
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r := notifierFunc(func(ctx context.Context, alerts ...*types.Alert) (bool, error) {
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res = append(res, alerts...)
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return false, nil
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})
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i := Integration{
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notifier: r,
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conf: notifierConfigFunc(func() bool { return false }),
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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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i.Notify(nil, alerts...)
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require.Equal(t, len(res), 1)
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}
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func TestIntegrationSendResolved(t *testing.T) {
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res := []*types.Alert{}
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r := notifierFunc(func(ctx context.Context, alerts ...*types.Alert) (bool, error) {
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res = append(res, alerts...)
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return false, nil
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})
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i := Integration{
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notifier: r,
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conf: notifierConfigFunc(func() bool { return true }),
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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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i.Notify(nil, alerts...)
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require.Equal(t, len(res), 1)
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require.Equal(t, res, alerts)
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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{
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recv: &nflogpb.Receiver{GroupName: "test"},
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nflog: tnflog,
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}
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alerts := []*types.Alert{{}, {}, {}}
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ctx := context.Background()
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resctx, res, err := s.Exec(ctx, log.NewNopLogger(), alerts...)
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require.EqualError(t, err, "group key missing")
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require.Nil(t, res)
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require.NotNil(t, resctx)
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ctx = WithGroupKey(ctx, "1")
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resctx, res, err = s.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, 1, 2})
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resctx, res, err = s.Exec(ctx, log.NewNopLogger(), alerts...)
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require.EqualError(t, err, "resolved alerts missing")
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require.Nil(t, res)
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require.NotNil(t, resctx)
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ctx = WithResolvedAlerts(ctx, []uint64{})
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tnflog.logFunc = func(r *nflogpb.Receiver, gkey string, firingAlerts, resolvedAlerts []uint64) error {
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require.Equal(t, s.recv, r)
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require.Equal(t, "1", gkey)
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require.Equal(t, []uint64{0, 1, 2}, firingAlerts)
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require.Equal(t, []uint64{}, resolvedAlerts)
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return nil
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}
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resctx, res, err = s.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.NotNil(t, resctx)
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ctx = WithFiringAlerts(ctx, []uint64{})
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ctx = WithResolvedAlerts(ctx, []uint64{0, 1, 2})
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tnflog.logFunc = func(r *nflogpb.Receiver, gkey string, firingAlerts, resolvedAlerts []uint64) error {
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require.Equal(t, s.recv, r)
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require.Equal(t, "1", gkey)
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require.Equal(t, []uint64{}, firingAlerts)
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require.Equal(t, []uint64{0, 1, 2}, resolvedAlerts)
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return nil
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}
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resctx, res, err = s.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.NotNil(t, resctx)
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}
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func TestSilenceStage(t *testing.T) {
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silences, err := silence.New(silence.Options{})
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if err != nil {
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t.Fatal(err)
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}
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if _, err := silences.Set(&silencepb.Silence{
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EndsAt: utcNow().Add(time.Hour),
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Matchers: []*silencepb.Matcher{{Name: "mute", Pattern: "me"}},
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}); err != nil {
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t.Fatal(err)
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}
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marker := types.NewMarker()
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silencer := NewSilenceStage(silences, marker)
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in := []model.LabelSet{
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{},
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{"test": "set"},
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{"mute": "me"},
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{"foo": "bar", "test": "set"},
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{"foo": "bar", "mute": "me"},
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{},
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{"not": "muted"},
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}
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out := []model.LabelSet{
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{},
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{"test": "set"},
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{"foo": "bar", "test": "set"},
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{},
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{"not": "muted"},
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}
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var inAlerts []*types.Alert
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for _, lset := range in {
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inAlerts = append(inAlerts, &types.Alert{
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Alert: model.Alert{Labels: lset},
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})
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}
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// Set the second alert as previously silenced. It is expected to have
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// the WasSilenced flag set to true afterwards.
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marker.SetSilenced(inAlerts[1].Fingerprint(), "123")
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_, alerts, err := silencer.Exec(nil, log.NewNopLogger(), inAlerts...)
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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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var got []model.LabelSet
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for _, a := range alerts {
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got = append(got, a.Labels)
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}
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if !reflect.DeepEqual(got, out) {
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t.Fatalf("Muting failed, expected: %v\ngot %v", out, got)
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}
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}
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func TestInhibitStage(t *testing.T) {
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// Mute all label sets that have a "mute" key.
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muter := types.MuteFunc(func(lset model.LabelSet) bool {
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_, ok := lset["mute"]
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return ok
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})
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marker := types.NewMarker()
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inhibitor := NewInhibitStage(muter, marker)
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in := []model.LabelSet{
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{},
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{"test": "set"},
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{"mute": "me"},
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{"foo": "bar", "test": "set"},
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{"foo": "bar", "mute": "me"},
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{},
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{"not": "muted"},
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}
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out := []model.LabelSet{
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{},
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{"test": "set"},
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{"foo": "bar", "test": "set"},
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{},
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{"not": "muted"},
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}
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var inAlerts []*types.Alert
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for _, lset := range in {
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inAlerts = append(inAlerts, &types.Alert{
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Alert: model.Alert{Labels: lset},
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})
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}
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// Set the second alert as previously inhibited. It is expected to have
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// the WasInhibited flag set to true afterwards.
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marker.SetInhibited(inAlerts[1].Fingerprint(), "123")
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_, 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)
|
|
}
|
|
}
|