diff options
Diffstat (limited to 'cmd/kpod')
-rw-r--r-- | cmd/kpod/main.go | 1 | ||||
-rw-r--r-- | cmd/kpod/spec.go | 4 | ||||
-rw-r--r-- | cmd/kpod/start.go | 125 |
3 files changed, 128 insertions, 2 deletions
diff --git a/cmd/kpod/main.go b/cmd/kpod/main.go index 97d942a3c..a4bb12475 100644 --- a/cmd/kpod/main.go +++ b/cmd/kpod/main.go @@ -57,6 +57,7 @@ func main() { rmiCommand, runCommand, saveCommand, + startCommand, statsCommand, stopCommand, tagCommand, diff --git a/cmd/kpod/spec.go b/cmd/kpod/spec.go index b19d4d33a..8d9189a0d 100644 --- a/cmd/kpod/spec.go +++ b/cmd/kpod/spec.go @@ -319,8 +319,8 @@ func (c *createConfig) CreateBlockIO() (spec.LinuxBlockIO, error) { // GetAnnotations returns the all the annotations for the container func (c *createConfig) GetAnnotations() map[string]string { a := getDefaultAnnotations() - // TODO - // Which annotations do we want added by default + // TODO - Which annotations do we want added by default + // TODO - This should be added to the DB long term if c.tty { a["io.kubernetes.cri-o.TTY"] = "true" } diff --git a/cmd/kpod/start.go b/cmd/kpod/start.go new file mode 100644 index 000000000..7f9918fa2 --- /dev/null +++ b/cmd/kpod/start.go @@ -0,0 +1,125 @@ +package main + +import ( + "fmt" + "sync" + + "github.com/pkg/errors" + "github.com/sirupsen/logrus" + "github.com/urfave/cli" + "os" + "strconv" +) + +var ( + startFlags = []cli.Flag{ + cli.BoolFlag{ + Name: "attach, a", + Usage: "Attach container's STDOUT and STDERR", + }, + cli.StringFlag{ + Name: "detach-keys", + Usage: "Override the key sequence for detaching a container. Format is a single character [a-Z] or ctrl-<value> where <value> is one of: a-z, @, ^, [, , or _.", + }, + cli.BoolFlag{ + Name: "interactive, i", + Usage: "Keep STDIN open even if not attached", + }, + } + startDescription = ` + kpod start + + Starts one or more containers. The container name or ID can be used. +` + + startCommand = cli.Command{ + Name: "start", + Usage: "Start one or more containers", + Description: startDescription, + Flags: startFlags, + Action: startCmd, + ArgsUsage: "CONTAINER-NAME [CONTAINER-NAME ...]", + } +) + +func startCmd(c *cli.Context) error { + args := c.Args() + if len(args) < 1 { + return errors.Errorf("you must provide at least one container name or id") + } + + attach := c.Bool("attach") + + if len(args) > 1 && attach { + return errors.Errorf("you cannot start and attach multiple containers at once") + } + + if err := validateFlags(c, startFlags); err != nil { + return err + } + + runtime, err := getRuntime(c) + if err != nil { + return errors.Wrapf(err, "error creating libpod runtime") + } + defer runtime.Shutdown(false) + + var lastError error + for _, container := range args { + // Create a bool channel to track that the console socket attach + // is successful. + attached := make(chan bool) + // Create a waitgroup so we can sync and wait for all goroutines + // to finish before exiting main + var wg sync.WaitGroup + + ctr, err := runtime.LookupContainer(container) + if err != nil { + if lastError != nil { + fmt.Fprintln(os.Stderr, lastError) + } + lastError = errors.Wrapf(err, "unable to find container %s", container) + continue + } + + // We can only be interactive if both the config and the command-line say so + if c.Bool("interactive") && !ctr.Config().Stdin { + return errors.Errorf("the container was not created with the interactive option") + } + noStdIn := c.Bool("interactive") + tty, err := strconv.ParseBool(ctr.Spec().Annotations["io.kubernetes.cri-o.TTY"]) + if err != nil { + return errors.Wrapf(err, "unable to parse annotations in %s", ctr.ID()) + } + // We only get a terminal session if both a tty was specified in the spec and + // -a on the command-line was given. + if attach && tty { + // We increment the wg counter because we need to do the attach + wg.Add(1) + // Attach to the running container + go func() { + logrus.Debug("trying to attach to the container %s", ctr.ID()) + defer wg.Done() + if err := ctr.Attach(noStdIn, c.String("detach-keys"), attached); err != nil { + logrus.Errorf("unable to attach to container %s: %q", ctr.ID(), err) + } + }() + if !<-attached { + return errors.Errorf("unable to attach to container %s", ctr.ID()) + } + } + err = ctr.Start() + if err != nil { + if lastError != nil { + fmt.Fprintln(os.Stderr, lastError) + } + lastError = errors.Wrapf(err, "unable to start %s", container) + continue + } + if !attach { + fmt.Println(ctr.ID()) + } + wg.Wait() + } + return lastError +} |