131 lines
2.7 KiB
Go
131 lines
2.7 KiB
Go
package cli
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import (
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"encoding/json"
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"fmt"
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"os"
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"github.com/pkg/errors"
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"github.com/prometheus/alertmanager/types"
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"github.com/spf13/cobra"
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flag "github.com/spf13/pflag"
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"sync"
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)
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var importFlags *flag.FlagSet
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var importCmd = &cobra.Command{
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Use: "import [JSON file]",
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Short: "Import silences",
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Long: `Import alertmanager silences from JSON file or stdin
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This command can be used to bulk import silences from a JSON file
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created by query command. For example:
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amtool silence query -o json foo > foo.json
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amtool silence import foo.json
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JSON data can also come from stdin if no param is specified.
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`,
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Args: cobra.MaximumNArgs(1),
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Run: CommandWrapper(bulkImport),
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}
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func init() {
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importCmd.Flags().BoolP("force", "f", false, "Force adding new silences even if it already exists")
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importCmd.Flags().IntP("worker", "w", 8, "Number of concurrent workers to use for import")
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importFlags = importCmd.Flags()
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}
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func addSilenceWorker(silencec <-chan *types.Silence, errc chan<- error) {
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for s := range silencec {
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silenceId, err := addSilence(s)
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sid := s.ID
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if err != nil && err.Error() == "[bad_data] not found" {
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// silence doesn't exists yet, retry to create as a new one
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s.ID = ""
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silenceId, err = addSilence(s)
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}
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if err != nil {
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fmt.Fprintf(os.Stderr, "Error adding silence id='%v': %v", sid, err)
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} else {
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fmt.Println(silenceId)
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}
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errc <- err
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}
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}
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func bulkImport(cmd *cobra.Command, args []string) error {
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force, err := importFlags.GetBool("force")
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if err != nil {
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return err
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}
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workers, err := importFlags.GetInt("worker")
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if err != nil {
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return err
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}
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input := os.Stdin
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if len(args) == 1 {
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input, err = os.Open(args[0])
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if err != nil {
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return err
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}
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defer input.Close()
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}
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dec := json.NewDecoder(input)
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// read open square bracket
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_, err = dec.Token()
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if err != nil {
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return errors.Wrap(err, "couldn't unmarshal input data, is it JSON?")
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}
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silencec := make(chan *types.Silence, 100)
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errc := make(chan error, 100)
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var wg sync.WaitGroup
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for w := 0; w < workers; w++ {
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go func() {
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wg.Add(1)
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addSilenceWorker(silencec, errc)
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wg.Done()
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}()
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}
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errCount := 0
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go func() {
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for err := range errc {
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if err != nil {
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errCount++
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}
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}
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}()
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count := 0
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for dec.More() {
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var s types.Silence
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err := dec.Decode(&s)
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if err != nil {
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return errors.Wrap(err, "couldn't unmarshal input data, is it JSON?")
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}
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if force {
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// reset the silence ID so Alertmanager will always create new silence
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s.ID = ""
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}
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silencec <- &s
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count++
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}
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close(silencec)
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wg.Wait()
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close(errc)
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if errCount > 0 {
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return fmt.Errorf("couldn't import %v out of %v silences", errCount, count)
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}
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return nil
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}
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