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// Copyright 2018 Prometheus Team
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package cli
import (
"context"
"errors"
"fmt"
"net/url"
"os"
"github.com/prometheus/common/model"
"gopkg.in/alecthomas/kingpin.v2"
"github.com/prometheus/alertmanager/api/v2/client/general"
"github.com/prometheus/alertmanager/api/v2/models"
"github.com/prometheus/alertmanager/config"
"github.com/prometheus/alertmanager/pkg/labels"
)
// getRemoteAlertmanagerConfigStatus returns status responsecontaining configuration from remote Alertmanager.
func getRemoteAlertmanagerConfigStatus(ctx context.Context, alertmanagerURL *url.URL) (*models.AlertmanagerStatus, error) {
amclient := NewAlertmanagerClient(alertmanagerURL)
params := general.NewGetStatusParams().WithContext(ctx)
getOk, err := amclient.General.GetStatus(params)
if err != nil {
return nil, err
}
return getOk.Payload, nil
}
func checkRoutingConfigInputFlags(alertmanagerURL *url.URL, configFile string) {
if alertmanagerURL != nil && configFile != "" {
fmt.Fprintln(os.Stderr, "Warning: --config.file flag overrides the --alertmanager.url.")
}
if alertmanagerURL == nil && configFile == "" {
kingpin.Fatalf("You have to specify one of --config.file or --alertmanager.url flags.")
}
}
func loadAlertmanagerConfig(ctx context.Context, alertmanagerURL *url.URL, configFile string) (*config.Config, error) {
checkRoutingConfigInputFlags(alertmanagerURL, configFile)
if configFile != "" {
cfg, err := config.LoadFile(configFile)
if err != nil {
return nil, err
}
return cfg, nil
}
if alertmanagerURL == nil {
return nil, errors.New("failed to get Alertmanager configuration")
}
configStatus, err := getRemoteAlertmanagerConfigStatus(ctx, alertmanagerURL)
if err != nil {
return nil, err
}
return config.Load(*configStatus.Config.Original)
}
// convertClientToCommonLabelSet converts client.LabelSet to model.Labelset.
func convertClientToCommonLabelSet(cls models.LabelSet) model.LabelSet {
mls := make(model.LabelSet, len(cls))
for ln, lv := range cls {
mls[model.LabelName(ln)] = model.LabelValue(lv)
}
return mls
}
// TypeMatchers only valid for when you are going to add a silence.
func TypeMatchers(matchers []labels.Matcher) models.Matchers {
typeMatchers := make(models.Matchers, len(matchers))
for i, matcher := range matchers {
typeMatchers[i] = TypeMatcher(matcher)
}
return typeMatchers
}
// TypeMatcher only valid for when you are going to add a silence.
func TypeMatcher(matcher labels.Matcher) *models.Matcher {
name := matcher.Name
value := matcher.Value
typeMatcher := models.Matcher{
Name: &name,
Value: &value,
}
isEqual := (matcher.Type == labels.MatchEqual) || (matcher.Type == labels.MatchRegexp)
isRegex := (matcher.Type == labels.MatchRegexp) || (matcher.Type == labels.MatchNotRegexp)
typeMatcher.IsEqual = &isEqual
typeMatcher.IsRegex = &isRegex
return &typeMatcher
}
// Helper function for adding the ctx with timeout into an action.
func execWithTimeout(fn func(context.Context, *kingpin.ParseContext) error) func(*kingpin.ParseContext) error {
return func(x *kingpin.ParseContext) error {
ctx, cancel := context.WithTimeout(context.Background(), timeout)
defer cancel()
return fn(ctx, x)
}
}
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