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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 (
"fmt"
"os"
"github.com/alecthomas/kingpin/v2"
"github.com/prometheus/alertmanager/config"
"github.com/prometheus/alertmanager/template"
)
// TODO: This can just be a type that is []string, doesn't have to be a struct.
type checkConfigCmd struct {
files []string
}
const checkConfigHelp = `Validate alertmanager config files
Will validate the syntax and schema for alertmanager config file
and associated templates. Non existing templates will not trigger
errors.
`
func configureCheckConfigCmd(app *kingpin.Application) {
var (
c = &checkConfigCmd{}
checkCmd = app.Command("check-config", checkConfigHelp)
)
checkCmd.Arg("check-files", "Files to be validated").ExistingFilesVar(&c.files)
checkCmd.Action(c.checkConfig)
}
func (c *checkConfigCmd) checkConfig(ctx *kingpin.ParseContext) error {
return CheckConfig(c.files)
}
func CheckConfig(args []string) error {
if len(args) == 0 {
stat, err := os.Stdin.Stat()
if err != nil {
kingpin.Fatalf("Failed to stat standard input: %v", err)
}
if (stat.Mode() & os.ModeCharDevice) != 0 {
kingpin.Fatalf("Failed to read from standard input")
}
args = []string{os.Stdin.Name()}
}
failed := 0
for _, arg := range args {
fmt.Printf("Checking '%s'", arg)
cfg, err := config.LoadFile(arg)
if err != nil {
fmt.Printf(" FAILED: %s\n", err)
failed++
} else {
fmt.Printf(" SUCCESS\n")
}
if cfg != nil {
fmt.Println("Found:")
if cfg.Global != nil {
fmt.Println(" - global config")
}
if cfg.Route != nil {
fmt.Println(" - route")
}
fmt.Printf(" - %d inhibit rules\n", len(cfg.InhibitRules))
fmt.Printf(" - %d receivers\n", len(cfg.Receivers))
fmt.Printf(" - %d templates\n", len(cfg.Templates))
if len(cfg.Templates) > 0 {
_, err = template.FromGlobs(cfg.Templates)
if err != nil {
fmt.Printf(" FAILED: %s\n", err)
failed++
} else {
fmt.Printf(" SUCCESS\n")
}
}
}
fmt.Printf("\n")
}
if failed > 0 {
return fmt.Errorf("failed to validate %d file(s)", failed)
}
return nil
}