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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 (
"bytes"
"context"
"fmt"
"github.com/alecthomas/kingpin/v2"
"github.com/xlab/treeprint"
"github.com/prometheus/alertmanager/api/v2/models"
"github.com/prometheus/alertmanager/dispatch"
)
type routingShow struct {
configFile string
labels []string
expectedReceivers string
debugTree bool
}
const (
routingHelp = `Prints alert routing tree
Will print whole routing tree in form of ASCII tree view.
Routing is loaded from a local configuration file or a running Alertmanager configuration.
Specifying --config.file takes precedence over --alertmanager.url.
Example:
./amtool config routes [show] --config.file=doc/examples/simple.yml
`
branchSlugSeparator = " "
)
func configureRoutingCmd(app *kingpin.CmdClause) {
var (
c = &routingShow{}
routingCmd = app.Command("routes", routingHelp)
routingShowCmd = routingCmd.Command("show", routingHelp).Default()
configFlag = routingCmd.Flag("config.file", "Config file to be tested.")
)
configFlag.ExistingFileVar(&c.configFile)
routingShowCmd.Action(execWithTimeout(c.routingShowAction))
configureRoutingTestCmd(routingCmd, c)
}
func (c *routingShow) routingShowAction(ctx context.Context, _ *kingpin.ParseContext) error {
// Load configuration from file or URL.
cfg, err := loadAlertmanagerConfig(ctx, alertmanagerURL, c.configFile)
if err != nil {
kingpin.Fatalf("%s", err)
return err
}
route := dispatch.NewRoute(cfg.Route, nil)
tree := treeprint.New()
convertRouteToTree(route, tree)
fmt.Println("Routing tree:")
fmt.Println(tree.String())
return nil
}
func getRouteTreeSlug(route *dispatch.Route, showContinue, showReceiver bool) string {
var branchSlug bytes.Buffer
if route.Matchers.Len() == 0 {
branchSlug.WriteString("default-route")
} else {
branchSlug.WriteString(route.Matchers.String())
}
if route.Continue && showContinue {
branchSlug.WriteString(branchSlugSeparator)
branchSlug.WriteString("continue: true")
}
if showReceiver {
branchSlug.WriteString(branchSlugSeparator)
branchSlug.WriteString("receiver: ")
branchSlug.WriteString(route.RouteOpts.Receiver)
}
return branchSlug.String()
}
func convertRouteToTree(route *dispatch.Route, tree treeprint.Tree) {
branch := tree.AddBranch(getRouteTreeSlug(route, true, true))
for _, r := range route.Routes {
convertRouteToTree(r, branch)
}
}
func getMatchingTree(route *dispatch.Route, tree treeprint.Tree, lset models.LabelSet) {
final := true
branch := tree.AddBranch(getRouteTreeSlug(route, false, false))
for _, r := range route.Routes {
if r.Matchers.Matches(convertClientToCommonLabelSet(lset)) {
getMatchingTree(r, branch, lset)
final = false
if !r.Continue {
break
}
}
}
if final {
branch.SetValue(getRouteTreeSlug(route, false, true))
}
}