Golang App.MountPoints方法代码示例

// mergeMounts merges the optMounts with the image's mount points.
// The mount points defined in the image will be overridden by the ones
// with the same name in optMounts.
func mergeMounts(app *appctypes.App, optMounts []kubecontainer.Mount) {
	mountMap := make(map[appctypes.ACName]appctypes.MountPoint)
	for _, m := range app.MountPoints {
		mountMap[m.Name] = m
	}
	for _, m := range optMounts {
		mpName := convertToACName(m.Name)
		mountMap[mpName] = appctypes.MountPoint{
			Name:     mpName,
			Path:     m.ContainerPath,
			ReadOnly: m.ReadOnly,
		}
	}
	app.MountPoints = nil
	for _, mount := range mountMap {
		app.MountPoints = append(app.MountPoints, mount)
	}
}

// setApp overrides the app's fields if any of them are specified in the
// container's spec.
func setApp(app *appctypes.App, c *api.Container, opts *kubecontainer.RunContainerOptions) error {
	// Override the exec.
	// TOOD(yifan): Revisit this for the overriding rule.
	if len(c.Command) > 0 || len(c.Args) > 0 {
		app.Exec = append(c.Command, c.Args...)
	}

	// TODO(yifan): Use non-root user in the future, see:
	// https://github.com/coreos/rkt/issues/820
	app.User, app.Group = "0", "0"

	// Override the working directory.
	if len(c.WorkingDir) > 0 {
		app.WorkingDirectory = c.WorkingDir
	}

	// Override the environment.
	if len(opts.Envs) > 0 {
		app.Environment = []appctypes.EnvironmentVariable{}
	}
	for _, env := range c.Env {
		app.Environment = append(app.Environment, appctypes.EnvironmentVariable{
			Name:  env.Name,
			Value: env.Value,
		})
	}

	// Override the mount points.
	if len(opts.Mounts) > 0 {
		app.MountPoints = []appctypes.MountPoint{}
	}
	for _, m := range opts.Mounts {
		mountPointName, err := appctypes.NewACName(m.Name)
		if err != nil {
			return err
		}
		app.MountPoints = append(app.MountPoints, appctypes.MountPoint{
			Name:     *mountPointName,
			Path:     m.ContainerPath,
			ReadOnly: m.ReadOnly,
		})
	}

	// Override the ports.
	if len(opts.PortMappings) > 0 {
		app.Ports = []appctypes.Port{}
	}
	for _, p := range opts.PortMappings {
		name, err := appctypes.SanitizeACName(p.Name)
		if err != nil {
			return err
		}
		portName := appctypes.MustACName(name)
		app.Ports = append(app.Ports, appctypes.Port{
			Name:     *portName,
			Protocol: string(p.Protocol),
			Port:     uint(p.ContainerPort),
		})
	}

	// Override isolators.
	return setIsolators(app, c)
}

// setApp overrides the app's fields if any of them are specified in the
// container's spec.
func setApp(app *appctypes.App, c *api.Container, opts *kubecontainer.RunContainerOptions) error {
	// Override the exec.

	if len(c.Command) > 0 {
		app.Exec = c.Command
	}
	if len(c.Args) > 0 {
		app.Exec = append(app.Exec, c.Args...)
	}

	// TODO(yifan): Use non-root user in the future, see:
	// https://github.com/coreos/rkt/issues/820
	app.User, app.Group = "0", "0"

	// Override the working directory.
	if len(c.WorkingDir) > 0 {
		app.WorkingDirectory = c.WorkingDir
	}

	// Merge the environment. Override the image with the ones defined in the spec if necessary.
	for _, env := range opts.Envs {
		if ix := findEnvInList(app.Environment, env); ix >= 0 {
			app.Environment[ix].Value = env.Value
			continue
		}
		app.Environment = append(app.Environment, appctypes.EnvironmentVariable{
			Name:  env.Name,
			Value: env.Value,
		})
	}

	// Override the mount points.
	if len(opts.Mounts) > 0 {
		app.MountPoints = []appctypes.MountPoint{}
	}
	for _, m := range opts.Mounts {
		mountPointName, err := appctypes.NewACName(m.Name)
		if err != nil {
			return err
		}
		app.MountPoints = append(app.MountPoints, appctypes.MountPoint{
			Name:     *mountPointName,
			Path:     m.ContainerPath,
			ReadOnly: m.ReadOnly,
		})
	}

	// Override the ports.
	if len(opts.PortMappings) > 0 {
		app.Ports = []appctypes.Port{}
	}
	for _, p := range opts.PortMappings {
		name, err := appctypes.SanitizeACName(p.Name)
		if err != nil {
			return err
		}
		portName := appctypes.MustACName(name)
		app.Ports = append(app.Ports, appctypes.Port{
			Name:     *portName,
			Protocol: string(p.Protocol),
			Port:     uint(p.ContainerPort),
		})
	}

	// Override isolators.
	return setIsolators(app, c)
}

//.........这里部分代码省略.........
	app.Group = fmt.Sprintf("%d", spec.Process.User.GID)
	// 5.4 "eventHandlers"
	event := new(types.EventHandler)
	event.Name = "pre-start"
	for index := range runSpec.Hooks.Prestart {
		event.Exec = append(event.Exec, runSpec.Hooks.Prestart[index].Path)
		event.Exec = append(event.Exec, runSpec.Hooks.Prestart[index].Args...)
		event.Exec = append(event.Exec, runSpec.Hooks.Prestart[index].Env...)
	}
	if len(event.Exec) == 0 {
		event.Exec = append(event.Exec, "/bin/echo")
		event.Exec = append(event.Exec, "-n")
	}
	app.EventHandlers = append(app.EventHandlers, *event)
	event = new(types.EventHandler)
	event.Name = "post-stop"
	for index := range runSpec.Hooks.Poststop {
		event.Exec = append(event.Exec, runSpec.Hooks.Poststop[index].Path)
		event.Exec = append(event.Exec, runSpec.Hooks.Poststop[index].Args...)
		event.Exec = append(event.Exec, runSpec.Hooks.Poststop[index].Env...)
	}
	if len(event.Exec) == 0 {
		event.Exec = append(event.Exec, "/bin/echo")
		event.Exec = append(event.Exec, "-n")
	}
	app.EventHandlers = append(app.EventHandlers, *event)
	// 5.5 "workingDirectory"
	app.WorkingDirectory = spec.Process.Cwd
	// 5.6 "environment"
	env := new(types.EnvironmentVariable)
	for index := range spec.Process.Env {
		s := strings.Split(spec.Process.Env[index], "=")
		env.Name = s[0]
		env.Value = s[1]
		app.Environment = append(app.Environment, *env)
	}

	// 5.7 "mountPoints"
	for index := range spec.Mounts {
		mount := new(types.MountPoint)
		mount.Name = types.ACName(spec.Mounts[index].Name)
		mount.Path = spec.Mounts[index].Path
		mount.ReadOnly = false
		app.MountPoints = append(app.MountPoints, *mount)
	}

	// 5.8 "ports"

	// 5.9 "isolators"
	if runSpec.Linux.Resources != nil {
		if runSpec.Linux.Resources.CPU.Quota != 0 {
			cpuLimt := new(ResourceCPU)
			cpuLimt.Limit = fmt.Sprintf("%dm", runSpec.Linux.Resources.CPU.Quota)
			isolator := new(types.Isolator)
			isolator.Name = types.ACIdentifier("resource/cpu")
			bytes, _ := json.Marshal(cpuLimt)

			valueRaw := json.RawMessage(bytes)
			isolator.ValueRaw = &valueRaw

			app.Isolators = append(app.Isolators, *isolator)
		}
		if runSpec.Linux.Resources.Memory.Limit != 0 {
			memLimt := new(ResourceMem)
			memLimt.Limit = fmt.Sprintf("%dG", runSpec.Linux.Resources.Memory.Limit/(1024*1024*1024))
			isolator := new(types.Isolator)
			isolator.Name = types.ACIdentifier("resource/memory")
			bytes, _ := json.Marshal(memLimt)

			valueRaw := json.RawMessage(bytes)
			isolator.ValueRaw = &valueRaw

			app.Isolators = append(app.Isolators, *isolator)
		}
	}

	if len(spec.Linux.Capabilities) != 0 {
		isolatorCapSet := new(IsolatorCapSet)
		isolatorCapSet.Sets = append(isolatorCapSet.Sets, spec.Linux.Capabilities...)

		isolator := new(types.Isolator)
		isolator.Name = types.ACIdentifier(types.LinuxCapabilitiesRetainSetName)
		bytes, _ := json.Marshal(isolatorCapSet)

		valueRaw := json.RawMessage(bytes)
		isolator.ValueRaw = &valueRaw

		app.Isolators = append(app.Isolators, *isolator)
	}

	// 6. "annotations"

	// 7. "dependencies"

	// 8. "pathWhitelist"

	m.App = app

	return m
}

func patchManifest(im *schema.ImageManifest) error {

	if patchName != "" {
		name, err := types.NewACIdentifier(patchName)
		if err != nil {
			return err
		}
		im.Name = *name
	}

	var app *types.App = im.App
	if patchExec != "" {
		if app == nil {
			// if the original manifest was missing an app and
			// patchExec is set let's assume the user is trying to
			// inject one...
			im.App = &types.App{}
			app = im.App
		}
		app.Exec = strings.Split(patchExec, " ")
	}

	if patchUser != "" ||
		patchGroup != "" ||
		patchSupplementaryGIDs != "" ||
		patchCaps != "" ||
		patchRevokeCaps != "" ||
		patchMounts != "" ||
		patchPorts != "" ||
		patchIsolators != "" {
		// ...but if we still don't have an app and the user is trying
		// to patch one of its other parameters, it's an error
		if app == nil {
			return fmt.Errorf("no app in the supplied manifest and no exec command provided")
		}
	}

	if patchUser != "" {
		app.User = patchUser
	}

	if patchGroup != "" {
		app.Group = patchGroup
	}

	if patchSupplementaryGIDs != "" {
		app.SupplementaryGIDs = []int{}
		gids := strings.Split(patchSupplementaryGIDs, ",")
		for _, g := range gids {
			gid, err := strconv.Atoi(g)
			if err != nil {
				return fmt.Errorf("invalid supplementary group %q: %v", g, err)
			}
			app.SupplementaryGIDs = append(app.SupplementaryGIDs, gid)
		}
	}

	if patchCaps != "" {
		isolator := app.Isolators.GetByName(types.LinuxCapabilitiesRetainSetName)
		if isolator != nil {
			return fmt.Errorf("isolator already exists (os/linux/capabilities-retain-set)")
		}

		// Instantiate a Isolator with the content specified by the --capability
		// parameter.
		caps, err := types.NewLinuxCapabilitiesRetainSet(strings.Split(patchCaps, ",")...)
		if err != nil {
			return fmt.Errorf("cannot parse capability %q: %v", patchCaps, err)
		}
		app.Isolators = append(app.Isolators, caps.AsIsolator())
	}
	if patchRevokeCaps != "" {
		isolator := app.Isolators.GetByName(types.LinuxCapabilitiesRevokeSetName)
		if isolator != nil {
			return fmt.Errorf("isolator already exists (os/linux/capabilities-remove-set)")
		}

		// Instantiate a Isolator with the content specified by the --revoke-capability
		// parameter.
		caps, err := types.NewLinuxCapabilitiesRevokeSet(strings.Split(patchRevokeCaps, ",")...)
		if err != nil {
			return fmt.Errorf("cannot parse capability %q: %v", patchRevokeCaps, err)
		}
		app.Isolators = append(app.Isolators, caps.AsIsolator())
	}

	if patchMounts != "" {
		mounts := strings.Split(patchMounts, ":")
		for _, m := range mounts {
			mountPoint, err := types.MountPointFromString(m)
			if err != nil {
				return fmt.Errorf("cannot parse mount point %q: %v", m, err)
			}
			app.MountPoints = append(app.MountPoints, *mountPoint)
		}
	}

	if patchPorts != "" {
		ports := strings.Split(patchPorts, ":")
		for _, p := range ports {
//.........这里部分代码省略.........

func patchManifest(im *schema.ImageManifest) error {

	if patchName != "" {
		name, err := types.NewACIdentifier(patchName)
		if err != nil {
			return err
		}
		im.Name = *name
	}

	var app *types.App = im.App
	if patchExec != "" {
		if app == nil {
			// if the original manifest was missing an app and
			// patchExec is set let's assume the user is trying to
			// inject one...
			im.App = &types.App{}
			app = im.App
		}
		app.Exec = strings.Split(patchExec, " ")
	}

	if patchUser != "" || patchGroup != "" || patchSupplementaryGIDs != "" || patchCaps != "" || patchMounts != "" || patchPorts != "" || patchIsolators != "" {
		// ...but if we still don't have an app and the user is trying
		// to patch one of its other parameters, it's an error
		if app == nil {
			return fmt.Errorf("no app in the supplied manifest and no exec command provided")
		}
	}

	if patchUser != "" {
		app.User = patchUser
	}

	if patchGroup != "" {
		app.Group = patchGroup
	}

	if patchSupplementaryGIDs != "" {
		app.SupplementaryGIDs = []int{}
		gids := strings.Split(patchSupplementaryGIDs, ",")
		for _, g := range gids {
			gid, err := strconv.Atoi(g)
			if err != nil {
				return fmt.Errorf("invalid supplementary group %q: %v", g, err)
			}
			app.SupplementaryGIDs = append(app.SupplementaryGIDs, gid)
		}
	}

	if patchCaps != "" {
		isolator := app.Isolators.GetByName(types.LinuxCapabilitiesRetainSetName)
		if isolator != nil {
			return fmt.Errorf("isolator already exists")
		}

		// Instantiate a Isolator with the content specified by the --capability
		// parameter.

		// TODO: Instead of creating a JSON and then unmarshalling it, the isolator
		// should be instantiated directory. But it requires a constructor, see:
		// https://github.com/appc/spec/issues/268
		capsList := strings.Split(patchCaps, ",")
		caps := fmt.Sprintf(`"set": ["%s"]`, strings.Join(capsList, `", "`))
		isolatorStr := getIsolatorStr(types.LinuxCapabilitiesRetainSetName, caps)
		isolator = &types.Isolator{}
		err := isolator.UnmarshalJSON([]byte(isolatorStr))
		if err != nil {
			return fmt.Errorf("cannot parse capability %q: %v", patchCaps, err)
		}
		app.Isolators = append(app.Isolators, *isolator)
	}

	if patchMounts != "" {
		mounts := strings.Split(patchMounts, ":")
		for _, m := range mounts {
			mountPoint, err := types.MountPointFromString(m)
			if err != nil {
				return fmt.Errorf("cannot parse mount point %q: %v", m, err)
			}
			app.MountPoints = append(app.MountPoints, *mountPoint)
		}
	}

	if patchPorts != "" {
		ports := strings.Split(patchPorts, ":")
		for _, p := range ports {
			port, err := types.PortFromString(p)
			if err != nil {
				return fmt.Errorf("cannot parse port %q: %v", p, err)
			}
			app.Ports = append(app.Ports, *port)
		}
	}

	if patchIsolators != "" {
		isolators := strings.Split(patchIsolators, ":")
		for _, is := range isolators {
			name, isolatorStr, err := isolatorStrFromString(is)
			if err != nil {
//.........这里部分代码省略.........

func patchManifest(im *schema.ImageManifest) error {

	if patchName != "" {
		name, err := types.NewACIdentifier(patchName)
		if err != nil {
			return err
		}
		im.Name = *name
	}

	if patchExec != "" {
		im.App.Exec = strings.Split(patchExec, " ")
	}

	if patchUser != "" {
		im.App.User = patchUser
	}
	if patchGroup != "" {
		im.App.Group = patchGroup
	}

	var app *types.App
	if patchCaps != "" || patchMounts != "" || patchPorts != "" || patchIsolators != "" {
		app = im.App
		if app == nil {
			return fmt.Errorf("no app in the manifest")
		}
	}

	if patchCaps != "" {
		isolator := app.Isolators.GetByName(types.LinuxCapabilitiesRetainSetName)
		if isolator != nil {
			return fmt.Errorf("isolator already exists")
		}

		// Instantiate a Isolator with the content specified by the --capability
		// parameter.

		// TODO: Instead of creating a JSON and then unmarshalling it, the isolator
		// should be instantiated directory. But it requires a constructor, see:
		// https://github.com/appc/spec/issues/268
		capsList := strings.Split(patchCaps, ",")
		caps := fmt.Sprintf(`"set": ["%s"]`, strings.Join(capsList, `", "`))
		isolatorStr := getIsolatorStr(types.LinuxCapabilitiesRetainSetName, caps)
		isolator = &types.Isolator{}
		err := isolator.UnmarshalJSON([]byte(isolatorStr))
		if err != nil {
			return fmt.Errorf("cannot parse capability %q: %v", patchCaps, err)
		}
		app.Isolators = append(app.Isolators, *isolator)
	}

	if patchMounts != "" {
		mounts := strings.Split(patchMounts, ":")
		for _, m := range mounts {
			mountPoint, err := types.MountPointFromString(m)
			if err != nil {
				return fmt.Errorf("cannot parse mount point %q: %v", m, err)
			}
			app.MountPoints = append(app.MountPoints, *mountPoint)
		}
	}

	if patchPorts != "" {
		ports := strings.Split(patchPorts, ":")
		for _, p := range ports {
			port, err := types.PortFromString(p)
			if err != nil {
				return fmt.Errorf("cannot parse port %q: %v", p, err)
			}
			app.Ports = append(app.Ports, *port)
		}
	}

	if patchIsolators != "" {
		isolators := strings.Split(patchIsolators, ":")
		for _, is := range isolators {
			name, isolatorStr, err := isolatorStrFromString(is)
			if err != nil {
				return fmt.Errorf("cannot parse isolator %q: %v", is, err)
			}

			if _, ok := types.ResourceIsolatorNames[name]; !ok {
				return fmt.Errorf("isolator %s is not supported for patching", name)
			}

			isolator := &types.Isolator{}
			if err := isolator.UnmarshalJSON([]byte(isolatorStr)); err != nil {
				return fmt.Errorf("cannot unmarshal isolator %v: %v", isolatorStr, err)
			}
			app.Isolators = append(app.Isolators, *isolator)
		}
	}
	return nil
}

//.........这里部分代码省略.........
		// Instantiate a Isolator with the content specified by the --capability
		// parameter.
		caps, err := types.NewLinuxCapabilitiesRetainSet(strings.Split(patchCaps, ",")...)
		if err != nil {
			return fmt.Errorf("cannot parse capability %q: %v", patchCaps, err)
		}
		isolator, err = caps.AsIsolator()
		if err != nil {
			return err
		}
		app.Isolators = append(app.Isolators, *isolator)
	}
	if patchRevokeCaps != "" {
		isolator := app.Isolators.GetByName(types.LinuxCapabilitiesRevokeSetName)
		if isolator != nil {
			return fmt.Errorf("isolator already exists (os/linux/capabilities-remove-set)")
		}

		// Instantiate a Isolator with the content specified by the --revoke-capability
		// parameter.
		caps, err := types.NewLinuxCapabilitiesRevokeSet(strings.Split(patchRevokeCaps, ",")...)
		if err != nil {
			return fmt.Errorf("cannot parse capability %q: %v", patchRevokeCaps, err)
		}
		isolator, err = caps.AsIsolator()
		if err != nil {
			return err
		}
		app.Isolators = append(app.Isolators, *isolator)
	}

	if patchMounts != "" {
		mounts := strings.Split(patchMounts, ":")
		for _, m := range mounts {
			mountPoint, err := types.MountPointFromString(m)
			if err != nil {
				return fmt.Errorf("cannot parse mount point %q: %v", m, err)
			}
			app.MountPoints = append(app.MountPoints, *mountPoint)
		}
	}

	if patchPorts != "" {
		ports := strings.Split(patchPorts, ":")
		for _, p := range ports {
			port, err := types.PortFromString(p)
			if err != nil {
				return fmt.Errorf("cannot parse port %q: %v", p, err)
			}
			app.Ports = append(app.Ports, *port)
		}
	}

	// Parse seccomp args and override existing seccomp isolators
	if patchSeccompMode != "" {
		seccompIsolator, err := parseSeccompArgs(patchSeccompMode, patchSeccompSet)
		if err != nil {
			return err
		}
		seccompReps := []types.ACIdentifier{types.LinuxSeccompRemoveSetName, types.LinuxSeccompRetainSetName}
		app.Isolators.ReplaceIsolatorsByName(*seccompIsolator, seccompReps)
	} else if patchSeccompSet != "" {
		return fmt.Errorf("--seccomp-set specified without --seccomp-mode")
	}

	if patchIsolators != "" {
		isolators := strings.Split(patchIsolators, ":")
		for _, is := range isolators {
			name, isolatorStr, err := isolatorStrFromString(is)
			if err != nil {
				return fmt.Errorf("cannot parse isolator %q: %v", is, err)
			}

			_, ok := types.ResourceIsolatorNames[name]

			switch name {
			case types.LinuxNoNewPrivilegesName:
				ok = true
				kv := strings.Split(is, ",")
				if len(kv) != 2 {
					return fmt.Errorf("isolator %s: invalid format", name)
				}
				isolatorStr = fmt.Sprintf(`{ "name": "%s", "value": %s }`, name, kv[1])
			case types.LinuxSeccompRemoveSetName, types.LinuxSeccompRetainSetName:
				ok = false
			}

			if !ok {
				return fmt.Errorf("isolator %s is not supported for patching", name)
			}

			isolator := &types.Isolator{}
			if err := isolator.UnmarshalJSON([]byte(isolatorStr)); err != nil {
				return fmt.Errorf("cannot unmarshal isolator %v: %v", isolatorStr, err)
			}
			app.Isolators = append(app.Isolators, *isolator)
		}
	}
	return nil
}