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moby--moby/api/client/wait.go

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package client
import (
"fmt"
Cli "github.com/docker/docker/cli"
flag "github.com/docker/docker/pkg/mflag"
)
// CmdWait blocks until a container stops, then prints its exit code.
//
// If more than one container is specified, this will wait synchronously on each container.
//
// Usage: docker wait CONTAINER [CONTAINER...]
func (cli *DockerCli) CmdWait(args ...string) error {
cmd := Cli.Subcmd("wait", []string{"CONTAINER [CONTAINER...]"}, "Block until a container stops, then print its exit code.", true)
cmd.Require(flag.Min, 1)
cmd.ParseFlags(args, true)
var errNames []string
for _, name := range cmd.Args() {
status, err := waitForExit(cli, name)
if err != nil {
fmt.Fprintf(cli.err, "%s\n", err)
errNames = append(errNames, name)
} else {
fmt.Fprintf(cli.out, "%d\n", status)
}
}
if len(errNames) > 0 {
return fmt.Errorf("Error: failed to wait containers: %v", errNames)
}
return nil
}