Merge pull request #616 from crosbymichael/runtime-opts
Runtime configs and global reaper
This commit is contained in:
commit
7b06baa1f2
11 changed files with 246 additions and 97 deletions
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@ -11,11 +11,12 @@ import (
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"google.golang.org/grpc"
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"github.com/Sirupsen/logrus"
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runc "github.com/crosbymichael/go-runc"
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"github.com/docker/containerd"
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shimapi "github.com/docker/containerd/api/services/shim"
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"github.com/docker/containerd/linux/shim"
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"github.com/docker/containerd/reaper"
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"github.com/docker/containerd/sys"
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"github.com/docker/containerd/utils"
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"github.com/urfave/cli"
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)
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@ -78,6 +79,9 @@ func main() {
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func setupSignals() (chan os.Signal, error) {
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signals := make(chan os.Signal, 2048)
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signal.Notify(signals)
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// make sure runc is setup to use the monitor
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// for waiting on processes
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runc.Monitor = reaper.Default
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// set the shim as the subreaper for all orphaned processes created by the container
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if err := sys.SetSubreaper(1); err != nil {
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return nil, err
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@ -108,7 +112,7 @@ func handleSignals(signals chan os.Signal, server *grpc.Server, service *shim.Se
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logrus.WithField("signal", s).Debug("received signal")
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switch s {
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case syscall.SIGCHLD:
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exits, err := utils.Reap(false)
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exits, err := reaper.Reap()
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if err != nil {
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logrus.WithError(err).Error("reap exit status")
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}
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@ -44,6 +44,8 @@ type config struct {
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Snapshotter string `toml:"snapshotter"`
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// Plugins provides plugin specific configuration for the initialization of a plugin
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Plugins map[string]toml.Primitive `toml:"plugins"`
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// Enable containerd as a subreaper
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Subreaper bool `toml:"subreaper"`
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md toml.MetaData
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}
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@ -58,6 +60,8 @@ func (c *config) decodePlugin(name string, v interface{}) error {
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type grpcConfig struct {
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Socket string `toml:"socket"`
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Uid int `toml:"uid"`
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Gid int `toml:"gid"`
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}
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type debug struct {
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@ -21,7 +21,9 @@ import (
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"github.com/docker/containerd/content"
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"github.com/docker/containerd/log"
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"github.com/docker/containerd/plugin"
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"github.com/docker/containerd/reaper"
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"github.com/docker/containerd/snapshot"
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"github.com/docker/containerd/sys"
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"github.com/docker/containerd/utils"
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metrics "github.com/docker/go-metrics"
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"github.com/pkg/errors"
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@ -83,7 +85,13 @@ func main() {
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// start the signal handler as soon as we can to make sure that
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// we don't miss any signals during boot
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signals := make(chan os.Signal, 2048)
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signal.Notify(signals, syscall.SIGTERM, syscall.SIGINT, syscall.SIGUSR1)
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signal.Notify(signals, syscall.SIGTERM, syscall.SIGINT, syscall.SIGUSR1, syscall.SIGCHLD)
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if conf.Subreaper {
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log.G(global).Info("setting subreaper...")
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if err := sys.SetSubreaper(1); err != nil {
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return err
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}
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}
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log.G(global).Info("starting containerd boot...")
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// load all plugins into containerd
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@ -330,6 +338,9 @@ func serveGRPC(server *grpc.Server) error {
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if err != nil {
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return err
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}
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if err := os.Chown(path, conf.GRPC.Uid, conf.GRPC.Gid); err != nil {
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return err
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}
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go func() {
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defer l.Close()
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if err := server.Serve(l); err != nil {
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@ -360,6 +371,10 @@ func handleSignals(signals chan os.Signal, server *grpc.Server) error {
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for s := range signals {
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log.G(global).WithField("signal", s).Debug("received signal")
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switch s {
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case syscall.SIGCHLD:
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if _, err := reaper.Reap(); err != nil {
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log.G(global).WithError(err).Error("reap containerd processes")
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}
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default:
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server.Stop()
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return nil
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@ -193,11 +193,15 @@ var runCommand = cli.Command{
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if err != nil {
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return err
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}
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abs, err := filepath.Abs(context.String("rootfs"))
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if err != nil {
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return err
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}
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// for ctr right now just do a bind mount
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rootfs := []*mount.Mount{
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{
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Type: "bind",
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Source: context.String("rootfs"),
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Source: abs,
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Options: []string{
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"rw",
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"rbind",
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@ -22,23 +22,35 @@ import (
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const (
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runtimeName = "linux"
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configFilename = "config.json"
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defaultRuntime = "runc"
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)
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func init() {
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plugin.Register(runtimeName, &plugin.Registration{
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Type: plugin.RuntimePlugin,
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Init: New,
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Type: plugin.RuntimePlugin,
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Init: New,
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Config: &Config{},
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})
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}
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type Config struct {
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// Runtime is a path or name of an OCI runtime used by the shim
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Runtime string `toml:"runtime"`
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}
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func New(ic *plugin.InitContext) (interface{}, error) {
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path := filepath.Join(ic.State, runtimeName)
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if err := os.MkdirAll(path, 0700); err != nil {
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return nil, err
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}
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cfg := ic.Config.(*Config)
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if cfg.Runtime == "" {
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cfg.Runtime = defaultRuntime
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}
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c, cancel := context.WithCancel(ic.Context)
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return &Runtime{
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root: path,
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runtime: cfg.Runtime,
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events: make(chan *containerd.Event, 2048),
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eventsContext: c,
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eventsCancel: cancel,
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@ -46,7 +58,8 @@ func New(ic *plugin.InitContext) (interface{}, error) {
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}
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type Runtime struct {
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root string
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root string
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runtime string
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events chan *containerd.Event
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eventsContext context.Context
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@ -70,7 +83,7 @@ func (r *Runtime) Create(ctx context.Context, id string, opts containerd.CreateO
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sopts := &shim.CreateRequest{
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ID: id,
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Bundle: path,
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Runtime: "runc",
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Runtime: r.runtime,
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Stdin: opts.IO.Stdin,
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Stdout: opts.IO.Stdout,
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Stderr: opts.IO.Stderr,
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@ -14,6 +14,7 @@ import (
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"google.golang.org/grpc/grpclog"
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"github.com/docker/containerd/api/services/shim"
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"github.com/docker/containerd/reaper"
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"github.com/docker/containerd/utils"
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"github.com/pkg/errors"
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)
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@ -41,11 +42,9 @@ func newShim(path string) (shim.ShimClient, error) {
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Cloneflags: syscall.CLONE_NEWNS,
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Setpgid: true,
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}
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if err := cmd.Start(); err != nil {
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if err := reaper.Default.Start(cmd); err != nil {
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return nil, errors.Wrapf(err, "failed to start shim")
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}
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// since we are currently the parent go ahead and make sure we wait on the shim
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go cmd.Wait()
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return connectShim(socket)
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}
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101
reaper/reaper.go
Normal file
101
reaper/reaper.go
Normal file
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@ -0,0 +1,101 @@
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package reaper
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import (
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"bytes"
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"fmt"
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"os/exec"
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"sync"
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"github.com/docker/containerd/utils"
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)
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// Reap should be called when the process receives an SIGCHLD. Reap will reap
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// all exited processes and close their wait channels
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func Reap() ([]utils.Exit, error) {
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exits, err := utils.Reap(false)
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for _, e := range exits {
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Default.mu.Lock()
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c, ok := Default.cmds[e.Pid]
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Default.mu.Unlock()
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if !ok {
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continue
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}
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// after we get an exit, call wait on the go process to make sure all
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// pipes are closed and finalizers are run on the process
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c.c.Wait()
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c.exitCh <- e.Status
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Default.mu.Lock()
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delete(Default.cmds, e.Pid)
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Default.mu.Unlock()
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}
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return exits, err
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}
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var Default = &Monitor{
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cmds: make(map[int]*cmd),
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}
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type Monitor struct {
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mu sync.Mutex
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cmds map[int]*cmd
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}
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func (m *Monitor) Output(c *exec.Cmd) ([]byte, error) {
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var b bytes.Buffer
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c.Stdout = &b
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if err := m.Run(c); err != nil {
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return nil, err
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}
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return b.Bytes(), nil
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}
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func (m *Monitor) CombinedOutput(c *exec.Cmd) ([]byte, error) {
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var b bytes.Buffer
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c.Stdout = &b
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c.Stderr = &b
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if err := m.Run(c); err != nil {
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return nil, err
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}
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return b.Bytes(), nil
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}
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// Start starts the command a registers the process with the reaper
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func (m *Monitor) Start(c *exec.Cmd) error {
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rc := &cmd{
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c: c,
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exitCh: make(chan int, 1),
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}
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m.mu.Lock()
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// start the process
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if err := rc.c.Start(); err != nil {
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m.mu.Unlock()
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return err
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}
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m.cmds[rc.c.Process.Pid] = rc
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m.mu.Unlock()
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return nil
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}
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// Run runs and waits for the command to finish
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func (m *Monitor) Run(c *exec.Cmd) error {
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if err := m.Start(c); err != nil {
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return err
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}
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_, err := m.Wait(c)
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return err
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}
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func (m *Monitor) Wait(c *exec.Cmd) (int, error) {
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m.mu.Lock()
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rc, ok := m.cmds[c.Process.Pid]
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m.mu.Unlock()
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if !ok {
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return 255, fmt.Errorf("process does not exist")
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}
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return <-rc.exitCh, nil
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}
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type cmd struct {
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c *exec.Cmd
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exitCh chan int
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}
|
34
vendor.conf
34
vendor.conf
|
@ -1,64 +1,32 @@
|
|||
# go-runc client for runc; master as of 01/20/2017
|
||||
github.com/crosbymichael/go-runc 706de6f422f397fb70b8c98f9b8c8eab2de32ae2
|
||||
# console pkg;
|
||||
github.com/crosbymichael/go-runc bd9aef7cf4402a3a8728e3ef83dcca6a5a1be899
|
||||
github.com/crosbymichael/console 4bf9d88357031b516b3794a2594b6d060a29c59c
|
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# go-metrics client to prometheus; master as of 12/16/2016
|
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github.com/docker/go-metrics 0f35294225552d968a13f9c5bc71a3fa44b2eb87
|
||||
# prometheus client; latest release as of 12/16/2016
|
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github.com/prometheus/client_golang v0.8.0
|
||||
# prometheus client model; master as of 12/16/2016
|
||||
github.com/prometheus/client_model fa8ad6fec33561be4280a8f0514318c79d7f6cb6
|
||||
# prometheus common library; master as of 12/16/2016
|
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github.com/prometheus/common 195bde7883f7c39ea62b0d92ab7359b5327065cb
|
||||
# prometheus procfs; master as of 12/16/2016
|
||||
github.com/prometheus/procfs fcdb11ccb4389efb1b210b7ffb623ab71c5fdd60
|
||||
# beorn7/perks; master as of 12/16/2016
|
||||
github.com/beorn7/perks 4c0e84591b9aa9e6dcfdf3e020114cd81f89d5f9
|
||||
# matttproud/golang_protobuf_extensions; latest tagged release as of 12/16/2016
|
||||
github.com/matttproud/golang_protobuf_extensions v1.0.0
|
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# go-units from Docker; latest release as of 12/16/2016
|
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github.com/docker/go-units v0.3.1
|
||||
# gogo/protobuf - master as of 2/15/2016 (latest tagged release doesn't have needed change)
|
||||
github.com/gogo/protobuf d2e1ade2d719b78fe5b061b4c18a9f7111b5bdc8
|
||||
# golang support for protobufs - master as of 12/16/2016
|
||||
github.com/golang/protobuf 8ee79997227bf9b34611aee7946ae64735e6fd93
|
||||
# runc, latest release as of 12/16/2016
|
||||
github.com/opencontainers/runc ce450bcc6c135cae93ee2a99d41a308c179ff6dc
|
||||
# OCI runtime spec, latest release as of 12/16/2016
|
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github.com/opencontainers/runtime-spec v1.0.0-rc3
|
||||
# logrus, latest release as of 12/16/2016
|
||||
github.com/Sirupsen/logrus v0.11.0
|
||||
# go-btrfs from stevvooe; master as of 1/11/2017
|
||||
github.com/stevvooe/go-btrfs 8539a1d04898663b8eda14982e24b74e7a12388e
|
||||
# testify go testing support; latest release as of 12/16/2016
|
||||
github.com/stretchr/testify v1.1.4
|
||||
# go-spew (required by testify, and also by ctr); latest release as of 1/12/2017
|
||||
github.com/davecgh/go-spew v1.1.0
|
||||
# go-difflib (required by testify); latest release as of 1/12/2017
|
||||
github.com/pmezard/go-difflib v1.0.0
|
||||
# Go pkg for handling fifos; master as of 12/16/2016
|
||||
github.com/tonistiigi/fifo fe870ccf293940774c2b44e23f6c71fff8f7547d
|
||||
# client application library; latest release as of 12/16/2016
|
||||
github.com/urfave/cli v1.19.1
|
||||
# extended Golang net package; upstream reported githash as of 12/16/2016
|
||||
golang.org/x/net 8b4af36cd21a1f85a7484b49feb7c79363106d8e
|
||||
# Go gRPC support; latest release as of 12/16/2016
|
||||
google.golang.org/grpc v1.0.5
|
||||
# pkg/errors; latest release as of 12/16/2016
|
||||
github.com/pkg/errors v0.8.0
|
||||
# lockfile; master as of 1/12/2017
|
||||
github.com/nightlyone/lockfile 1d49c987357a327b5b03aa84cbddd582c328615d
|
||||
# docker (for docker/pkg/archive, which is required by snapshot); latest experimental release as of 1/12/2017
|
||||
github.com/docker/docker v1.13.0-rc6
|
||||
# go-digest; master as of 1/12/2017
|
||||
github.com/opencontainers/go-digest 21dfd564fd89c944783d00d069f33e3e7123c448
|
||||
# sys/unix; master as of 1/12/2017
|
||||
golang.org/x/sys/unix d75a52659825e75fff6158388dddc6a5b04f9ba5
|
||||
# image-spec master as of 1/17/2017
|
||||
github.com/opencontainers/image-spec a431dbcf6a74fca2e0e040b819a836dbe3fb23ca
|
||||
# continuity master as of 2/1/2017
|
||||
github.com/stevvooe/continuity 1530f13d23b34e2ccaf33881fefecc7e28e3577b
|
||||
# sync master as of 12/5/2016
|
||||
golang.org/x/sync 450f422ab23cf9881c94e2db30cac0eb1b7cf80c
|
||||
|
||||
github.com/BurntSushi/toml v0.2.0-21-g9906417
|
||||
|
|
50
vendor/github.com/crosbymichael/go-runc/monitor.go
generated
vendored
Normal file
50
vendor/github.com/crosbymichael/go-runc/monitor.go
generated
vendored
Normal file
|
@ -0,0 +1,50 @@
|
|||
package runc
|
||||
|
||||
import (
|
||||
"os/exec"
|
||||
"syscall"
|
||||
)
|
||||
|
||||
var Monitor ProcessMonitor = &defaultMonitor{}
|
||||
|
||||
// ProcessMonitor is an interface for process monitoring
|
||||
//
|
||||
// It allows daemons using go-runc to have a SIGCHLD handler
|
||||
// to handle exits without introducing races between the handler
|
||||
// and go's exec.Cmd
|
||||
// These methods should match the methods exposed by exec.Cmd to provide
|
||||
// a consistent experience for the caller
|
||||
type ProcessMonitor interface {
|
||||
Output(*exec.Cmd) ([]byte, error)
|
||||
CombinedOutput(*exec.Cmd) ([]byte, error)
|
||||
Run(*exec.Cmd) error
|
||||
Start(*exec.Cmd) error
|
||||
Wait(*exec.Cmd) (int, error)
|
||||
}
|
||||
|
||||
type defaultMonitor struct {
|
||||
}
|
||||
|
||||
func (m *defaultMonitor) Output(c *exec.Cmd) ([]byte, error) {
|
||||
return c.Output()
|
||||
}
|
||||
|
||||
func (m *defaultMonitor) CombinedOutput(c *exec.Cmd) ([]byte, error) {
|
||||
return c.CombinedOutput()
|
||||
}
|
||||
|
||||
func (m *defaultMonitor) Run(c *exec.Cmd) error {
|
||||
return c.Run()
|
||||
}
|
||||
|
||||
func (m *defaultMonitor) Start(c *exec.Cmd) error {
|
||||
return c.Start()
|
||||
}
|
||||
|
||||
func (m *defaultMonitor) Wait(c *exec.Cmd) (int, error) {
|
||||
status, err := c.Process.Wait()
|
||||
if err != nil {
|
||||
return -1, err
|
||||
}
|
||||
return status.Sys().(syscall.WaitStatus).ExitStatus(), nil
|
||||
}
|
80
vendor/github.com/crosbymichael/go-runc/runc.go
generated
vendored
80
vendor/github.com/crosbymichael/go-runc/runc.go
generated
vendored
|
@ -40,7 +40,7 @@ type Runc struct {
|
|||
|
||||
// List returns all containers created inside the provided runc root directory
|
||||
func (r *Runc) List(context context.Context) ([]*Container, error) {
|
||||
data, err := r.command(context, "list", "--format=json").Output()
|
||||
data, err := Monitor.Output(r.command(context, "list", "--format=json"))
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
@ -53,7 +53,7 @@ func (r *Runc) List(context context.Context) ([]*Container, error) {
|
|||
|
||||
// State returns the state for the container provided by id
|
||||
func (r *Runc) State(context context.Context, id string) (*Container, error) {
|
||||
data, err := r.command(context, "state", id).CombinedOutput()
|
||||
data, err := Monitor.CombinedOutput(r.command(context, "state", id))
|
||||
if err != nil {
|
||||
return nil, fmt.Errorf("%s: %s", err, data)
|
||||
}
|
||||
|
@ -72,6 +72,7 @@ type CreateOpts struct {
|
|||
Detach bool
|
||||
NoPivot bool
|
||||
NoNewKeyring bool
|
||||
ExtraFiles []*os.File
|
||||
}
|
||||
|
||||
func (o *CreateOpts) args() (out []string, err error) {
|
||||
|
@ -94,6 +95,9 @@ func (o *CreateOpts) args() (out []string, err error) {
|
|||
if o.Detach {
|
||||
out = append(out, "--detach")
|
||||
}
|
||||
if o.ExtraFiles != nil {
|
||||
out = append(out, "--preserve-fds", strconv.Itoa(len(o.ExtraFiles)))
|
||||
}
|
||||
return out, nil
|
||||
}
|
||||
|
||||
|
@ -111,14 +115,16 @@ func (r *Runc) Create(context context.Context, id, bundle string, opts *CreateOp
|
|||
if opts != nil && opts.IO != nil {
|
||||
opts.Set(cmd)
|
||||
}
|
||||
cmd.ExtraFiles = opts.ExtraFiles
|
||||
|
||||
if cmd.Stdout == nil && cmd.Stderr == nil {
|
||||
data, err := cmd.CombinedOutput()
|
||||
data, err := Monitor.CombinedOutput(cmd)
|
||||
if err != nil {
|
||||
return fmt.Errorf("%s: %s", err, data)
|
||||
}
|
||||
return nil
|
||||
}
|
||||
if err := cmd.Start(); err != nil {
|
||||
if err := Monitor.Start(cmd); err != nil {
|
||||
return err
|
||||
}
|
||||
if opts != nil && opts.IO != nil {
|
||||
|
@ -128,36 +134,26 @@ func (r *Runc) Create(context context.Context, id, bundle string, opts *CreateOp
|
|||
}
|
||||
}
|
||||
}
|
||||
return cmd.Wait()
|
||||
_, err := Monitor.Wait(cmd)
|
||||
return err
|
||||
}
|
||||
|
||||
// Start will start an already created container
|
||||
func (r *Runc) Start(context context.Context, id string) error {
|
||||
return runOrError(r.command(context, "start", id))
|
||||
return r.runOrError(r.command(context, "start", id))
|
||||
}
|
||||
|
||||
type ExecOpts struct {
|
||||
IO
|
||||
PidFile string
|
||||
Uid int
|
||||
Gid int
|
||||
Cwd string
|
||||
Tty bool
|
||||
ConsoleSocket *ConsoleSocket
|
||||
Detach bool
|
||||
}
|
||||
|
||||
func (o *ExecOpts) args() (out []string, err error) {
|
||||
out = append(out, "--user", fmt.Sprintf("%d:%d", o.Uid, o.Gid))
|
||||
if o.Tty {
|
||||
out = append(out, "--tty")
|
||||
}
|
||||
if o.ConsoleSocket != nil {
|
||||
out = append(out, "--console-socket", o.ConsoleSocket.Path())
|
||||
}
|
||||
if o.Cwd != "" {
|
||||
out = append(out, "--cwd", o.Cwd)
|
||||
}
|
||||
if o.Detach {
|
||||
out = append(out, "--detach")
|
||||
}
|
||||
|
@ -174,7 +170,7 @@ func (o *ExecOpts) args() (out []string, err error) {
|
|||
// Exec executres and additional process inside the container based on a full
|
||||
// OCI Process specification
|
||||
func (r *Runc) Exec(context context.Context, id string, spec specs.Process, opts *ExecOpts) error {
|
||||
f, err := ioutil.TempFile("", "-process")
|
||||
f, err := ioutil.TempFile("", "runc-process")
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
@ -197,13 +193,13 @@ func (r *Runc) Exec(context context.Context, id string, spec specs.Process, opts
|
|||
opts.Set(cmd)
|
||||
}
|
||||
if cmd.Stdout == nil && cmd.Stderr == nil {
|
||||
data, err := cmd.CombinedOutput()
|
||||
data, err := Monitor.CombinedOutput(cmd)
|
||||
if err != nil {
|
||||
return fmt.Errorf("%s: %s", err, data)
|
||||
}
|
||||
return nil
|
||||
}
|
||||
if err := cmd.Start(); err != nil {
|
||||
if err := Monitor.Start(cmd); err != nil {
|
||||
return err
|
||||
}
|
||||
if opts != nil && opts.IO != nil {
|
||||
|
@ -213,7 +209,8 @@ func (r *Runc) Exec(context context.Context, id string, spec specs.Process, opts
|
|||
}
|
||||
}
|
||||
}
|
||||
return cmd.Wait()
|
||||
_, err = Monitor.Wait(cmd)
|
||||
return err
|
||||
}
|
||||
|
||||
// Run runs the create, start, delete lifecycle of the container
|
||||
|
@ -231,19 +228,15 @@ func (r *Runc) Run(context context.Context, id, bundle string, opts *CreateOpts)
|
|||
if opts != nil {
|
||||
opts.Set(cmd)
|
||||
}
|
||||
if err := cmd.Start(); err != nil {
|
||||
if err := Monitor.Start(cmd); err != nil {
|
||||
return -1, err
|
||||
}
|
||||
status, err := cmd.Process.Wait()
|
||||
if err != nil {
|
||||
return -1, err
|
||||
}
|
||||
return status.Sys().(syscall.WaitStatus).ExitStatus(), nil
|
||||
return Monitor.Wait(cmd)
|
||||
}
|
||||
|
||||
// Delete deletes the container
|
||||
func (r *Runc) Delete(context context.Context, id string) error {
|
||||
return runOrError(r.command(context, "delete", id))
|
||||
return r.runOrError(r.command(context, "delete", id))
|
||||
}
|
||||
|
||||
// KillOpts specifies options for killing a container and its processes
|
||||
|
@ -266,7 +259,7 @@ func (r *Runc) Kill(context context.Context, id string, sig int, opts *KillOpts)
|
|||
if opts != nil {
|
||||
args = append(args, opts.args()...)
|
||||
}
|
||||
return runOrError(r.command(context, append(args, id, strconv.Itoa(sig))...))
|
||||
return r.runOrError(r.command(context, append(args, id, strconv.Itoa(sig))...))
|
||||
}
|
||||
|
||||
// Stats return the stats for a container like cpu, memory, and io
|
||||
|
@ -278,9 +271,9 @@ func (r *Runc) Stats(context context.Context, id string) (*Stats, error) {
|
|||
}
|
||||
defer func() {
|
||||
rd.Close()
|
||||
cmd.Wait()
|
||||
Monitor.Wait(cmd)
|
||||
}()
|
||||
if err := cmd.Start(); err != nil {
|
||||
if err := Monitor.Start(cmd); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
var e Event
|
||||
|
@ -297,7 +290,7 @@ func (r *Runc) Events(context context.Context, id string, interval time.Duration
|
|||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
if err := cmd.Start(); err != nil {
|
||||
if err := Monitor.Start(cmd); err != nil {
|
||||
rd.Close()
|
||||
return nil, err
|
||||
}
|
||||
|
@ -309,7 +302,7 @@ func (r *Runc) Events(context context.Context, id string, interval time.Duration
|
|||
defer func() {
|
||||
close(c)
|
||||
rd.Close()
|
||||
cmd.Wait()
|
||||
Monitor.Wait(cmd)
|
||||
}()
|
||||
for {
|
||||
var e Event
|
||||
|
@ -330,17 +323,17 @@ func (r *Runc) Events(context context.Context, id string, interval time.Duration
|
|||
|
||||
// Pause the container with the provided id
|
||||
func (r *Runc) Pause(context context.Context, id string) error {
|
||||
return runOrError(r.command(context, "pause", id))
|
||||
return r.runOrError(r.command(context, "pause", id))
|
||||
}
|
||||
|
||||
// Resume the container with the provided id
|
||||
func (r *Runc) Resume(context context.Context, id string) error {
|
||||
return runOrError(r.command(context, "resume", id))
|
||||
return r.runOrError(r.command(context, "resume", id))
|
||||
}
|
||||
|
||||
// Ps lists all the processes inside the container returning their pids
|
||||
func (r *Runc) Ps(context context.Context, id string) ([]int, error) {
|
||||
data, err := r.command(context, "ps", "--format", "json", id).CombinedOutput()
|
||||
data, err := Monitor.CombinedOutput(r.command(context, "ps", "--format", "json", id))
|
||||
if err != nil {
|
||||
return nil, fmt.Errorf("%s: %s", err, data)
|
||||
}
|
||||
|
@ -380,3 +373,18 @@ func (r *Runc) command(context context.Context, args ...string) *exec.Cmd {
|
|||
}
|
||||
return cmd
|
||||
}
|
||||
|
||||
// runOrError will run the provided command. If an error is
|
||||
// encountered and neither Stdout or Stderr was set the error and the
|
||||
// stderr of the command will be returned in the format of <error>:
|
||||
// <stderr>
|
||||
func (r *Runc) runOrError(cmd *exec.Cmd) error {
|
||||
if cmd.Stdout != nil || cmd.Stderr != nil {
|
||||
return Monitor.Run(cmd)
|
||||
}
|
||||
data, err := Monitor.CombinedOutput(cmd)
|
||||
if err != nil {
|
||||
return fmt.Errorf("%s: %s", err, data)
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
|
17
vendor/github.com/crosbymichael/go-runc/utils.go
generated
vendored
17
vendor/github.com/crosbymichael/go-runc/utils.go
generated
vendored
|
@ -1,9 +1,7 @@
|
|||
package runc
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"io/ioutil"
|
||||
"os/exec"
|
||||
"strconv"
|
||||
"syscall"
|
||||
)
|
||||
|
@ -18,21 +16,6 @@ func ReadPidFile(path string) (int, error) {
|
|||
return strconv.Atoi(string(data))
|
||||
}
|
||||
|
||||
// runOrError will run the provided command. If an error is
|
||||
// encountered and neither Stdout or Stderr was set the error and the
|
||||
// stderr of the command will be returned in the format of <error>:
|
||||
// <stderr>
|
||||
func runOrError(cmd *exec.Cmd) error {
|
||||
if cmd.Stdout != nil || cmd.Stderr != nil {
|
||||
return cmd.Run()
|
||||
}
|
||||
data, err := cmd.CombinedOutput()
|
||||
if err != nil {
|
||||
return fmt.Errorf("%s: %s", err, data)
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
const exitSignalOffset = 128
|
||||
|
||||
// exitStatus returns the correct exit status for a process based on if it
|
||||
|
|
Loading…
Reference in a new issue