コード例 #1
0
ファイル: container.go プロジェクト: noxiouz/stout
func newContainer(ctx context.Context, client *client.Client, profile *Profile, name, executable string, args, env map[string]string) (pr *process, err error) {
	defer apexctx.GetLogger(ctx).Trace("spawning container").Stop(&err)

	var image string
	if registry := profile.Registry; registry != "" {
		image = registry + "/" + name
	} else {
		image = name
	}

	var Env = make([]string, 0, len(env))
	for k, v := range env {
		Env = append(Env, k+"="+v)
	}

	var binds = make([]string, 1, len(profile.Binds)+1)
	binds[0] = filepath.Dir(args["--endpoint"]) + ":" + profile.RuntimePath
	binds = append(binds, profile.Binds...)

	// update args["--endpoint"] according to the container's point of view
	args["--endpoint"] = filepath.Join(profile.RuntimePath, filepath.Base(args["--endpoint"]))

	var Cmd = make(strslice.StrSlice, 1, len(args)+1)
	Cmd[0] = executable
	for k, v := range args {
		Cmd = append(Cmd, k, v)
	}

	config := container.Config{
		AttachStdin:  false,
		AttachStdout: true,
		AttachStderr: true,

		Env:        Env,
		Cmd:        Cmd,
		Image:      image,
		WorkingDir: profile.Cwd,
		Labels:     map[string]string{isolateDockerLabel: name},
	}

	apexctx.GetLogger(ctx).Info("applying Resource limits")
	var resources = container.Resources{
		Memory:     profile.Resources.Memory,
		CPUShares:  profile.Resources.CPUShares,
		CPUPeriod:  profile.Resources.CPUPeriod,
		CPUQuota:   profile.Resources.CPUQuota,
		CpusetCpus: profile.Resources.CpusetCpus,
		CpusetMems: profile.Resources.CpusetMems,
	}

	hostConfig := container.HostConfig{
		NetworkMode: profile.NetworkMode,
		Binds:       binds,
		Resources:   resources,
	}

	if len(profile.Tmpfs) != 0 {
		buff := new(bytes.Buffer)
		for k, v := range profile.Tmpfs {
			fmt.Fprintf(buff, "%s: %s;", k, v)
		}
		apexctx.GetLogger(ctx).Infof("mounting `tmpfs` to container: %s", buff.String())

		hostConfig.Tmpfs = profile.Tmpfs
	}

	// NOTE: It should be nil
	var networkingConfig *network.NetworkingConfig

	resp, err := client.ContainerCreate(ctx, &config, &hostConfig, networkingConfig, "")
	if err != nil {
		apexctx.GetLogger(ctx).WithError(err).Error("unable to create a container")
		return nil, err
	}

	for _, warn := range resp.Warnings {
		apexctx.GetLogger(ctx).Warnf("%s warning: %s", resp.ID, warn)
	}

	ctx, cancel := context.WithCancel(ctx)
	pr = &process{
		ctx:          ctx,
		cancellation: cancel,
		client:       client,
		containerID:  resp.ID,
	}

	return pr, nil
}