Golang Response.Failure方法代碼示例

func (j *patchEnvironment) Execute(resp jobs.Response) {
	if err := j.Write(true); err != nil {
		resp.Failure(ErrEnvironmentUpdateFailed)
		return
	}
	resp.Success(jobs.ResponseOk)
}

func (j *linkContainers) Execute(resp jobs.Response) {
	for i := range j.Links {
		if errw := j.Links[i].NetworkLinks.Write(j.Links[i].Id.NetworkLinksPathFor(), false); errw != nil {
			resp.Failure(ErrLinkContainersFailed)
			return
		}
	}

	resp.Success(jobs.ResponseOk)
}

func (j *containerPorts) Execute(resp jobs.Response) {
	portPairs, err := containers.GetExistingPorts(j.Id)
	if err != nil {
		log.Printf("job_container_ports_log: Unable to find unit: %s\n", err.Error())
		resp.Failure(ErrContainerNotFound)
		return
	}

	resp.SuccessWithData(jobs.ResponseAccepted, ContainerPortsResponse{portPairs})
}

func (j *containerLog) Execute(resp jobs.Response) {
	if _, err := os.Stat(j.Id.UnitPathFor()); err != nil {
		resp.Failure(ErrContainerNotFound)
		return
	}

	w := resp.SuccessWithWrite(jobs.ResponseOk, true, false)
	err := systemd.WriteLogsTo(w, j.Id.UnitNameFor(), 30, time.After(30*time.Second))
	if err != nil {
		log.Printf("job_container_log: Unable to fetch journal logs: %s\n", err.Error())
	}
}

func (j *startContainer) Execute(resp jobs.Response) {
	unitName := j.Id.UnitNameFor()
	unitPath := j.Id.UnitPathFor()

	inState, tooSoon := inStateOrTooSoon(j.Id, unitName, true, false, rateLimitChanges)
	if inState {
		w := resp.SuccessWithWrite(jobs.ResponseAccepted, true, false)
		fmt.Fprintf(w, "Container %s starting\n", j.Id)
		return
	}
	if tooSoon {
		resp.Failure(ErrStartRequestThrottled)
		return
	}

	if errs := csystemd.SetUnitStartOnBoot(j.Id, true); errs != nil {
		log.Print("alter_container_state: Unable to persist whether the unit is started on boot: ", errs)
		resp.Failure(ErrContainerStartFailed)
		return
	}

	if err := systemd.EnableAndReloadUnit(systemd.Connection(), unitName, unitPath); err != nil {
		if systemd.IsNoSuchUnit(err) || systemd.IsFileNotFound(err) {
			resp.Failure(ErrContainerNotFound)
			return
		}
		log.Printf("alter_container_state: Could not enable container %s: %v", unitName, err)
		resp.Failure(ErrContainerStartFailed)
		return
	}

	if err := systemd.Connection().StartUnitJob(unitName, "replace"); err != nil {
		log.Printf("alter_container_state: Could not start container %s: %v", unitName, err)
		resp.Failure(ErrContainerStartFailed)
		return
	}

	w := resp.SuccessWithWrite(jobs.ResponseAccepted, true, false)
	fmt.Fprintf(w, "Container %s starting\n", j.Id)
}

func (j *listImages) Execute(resp jobs.Response) {
	// TODO: config item for docker port
	dockerClient, err := docker.NewClient(j.DockerSocket)

	if err != nil {
		log.Printf("job_list_images: Couldn't connect to docker: %+v", err)
		resp.Failure(ErrListImagesFailed)
		return
	}

	imgs, err := dockerClient.ListImages(false)

	if err != nil {
		log.Printf("job_list_images: Couldn't connect to docker: %+v", err)
		resp.Failure(ErrListImagesFailed)
		return
	}

	w := resp.SuccessWithWrite(jobs.ResponseAccepted, true, false)
	for _, img := range imgs {
		fmt.Fprintf(w, "%+v\n", img.RepoTags[0])
	}
}

func (j *deleteContainer) Execute(resp jobs.Response) {
	unitName := j.Id.UnitNameFor()
	unitPath := j.Id.UnitPathFor()
	unitDefinitionsPath := j.Id.VersionedUnitsPathFor()
	idleFlagPath := j.Id.IdleUnitPathFor()
	socketUnitPath := j.Id.SocketUnitPathFor()
	homeDirPath := j.Id.BaseHomePath()
	runDirPath := j.Id.RunPathFor()
	networkLinksPath := j.Id.NetworkLinksPathFor()

	_, err := systemd.Connection().GetUnitProperties(unitName)
	switch {
	case systemd.IsNoSuchUnit(err):
		resp.Success(jobs.ResponseOk)
		return
	case err != nil:
		resp.Failure(ErrDeleteContainerFailed)
		return
	}

	if err := systemd.Connection().StopUnitJob(unitName, "fail"); err != nil {
		log.Printf("delete_container: Unable to queue stop unit job: %v", err)
	}

	ports, err := containers.GetExistingPorts(j.Id)
	if err != nil {
		if !os.IsNotExist(err) {
			log.Printf("delete_container: Unable to read existing port definitions: %v", err)
		}
		ports = port.PortPairs{}
	}

	if err := portReserver.ReleaseExternalPorts(ports); err != nil {
		log.Printf("delete_container: Unable to release ports: %v", err)
	}

	if err := os.Remove(unitPath); err != nil && !os.IsNotExist(err) {
		resp.Failure(ErrDeleteContainerFailed)
		return
	}

	if err := os.Remove(idleFlagPath); err != nil && !os.IsNotExist(err) {
		resp.Failure(ErrDeleteContainerFailed)
		return
	}

	if err := csystemd.SetUnitStartOnBoot(j.Id, false); err != nil {
		log.Printf("delete_container: Unable to clear unit boot state: %v", err)
	}

	if err := os.Remove(socketUnitPath); err != nil && !os.IsNotExist(err) {
		log.Printf("delete_container: Unable to remove socket unit path: %v", err)
	}

	if err := os.Remove(networkLinksPath); err != nil && !os.IsNotExist(err) {
		log.Printf("delete_container: Unable to remove network links file: %v", err)
	}

	if err := os.RemoveAll(unitDefinitionsPath); err != nil {
		log.Printf("delete_container: Unable to remove definitions for container: %v", err)
	}

	if err := os.RemoveAll(filepath.Dir(runDirPath)); err != nil {
		log.Printf("delete_container: Unable to remove run directory: %v", err)
	}

	if err := os.RemoveAll(filepath.Dir(homeDirPath)); err != nil {
		log.Printf("delete_container: Unable to remove home directory: %v", err)
	}

	if _, err := systemd.Connection().DisableUnitFiles([]string{unitPath, socketUnitPath}, false); err != nil {
		log.Printf("delete_container: Some units have not been disabled: %v", err)
	}

	if err := systemd.Connection().Reload(); err != nil {
		log.Printf("delete_container: Some units have not been disabled: %v", err)
	}

	resp.Success(jobs.ResponseOk)
}

func (req *installContainer) Execute(resp jobs.Response) {
	id := req.Id
	unitName := id.UnitNameFor()
	unitPath := id.UnitPathFor()
	unitVersionPath := id.VersionedUnitPathFor(req.RequestIdentifier.String())

	socketUnitName := id.SocketUnitNameFor()
	socketUnitPath := id.SocketUnitPathFor()
	var socketActivationType string
	if req.SocketActivation {
		socketActivationType = "enabled"
		if !req.SkipSocketProxy {
			socketActivationType = "proxied"
		}
	}

	// attempt to download the environment if it is remote
	env := req.Environment
	if env != nil {
		if err := env.Fetch(100 * 1024); err != nil {
			resp.Failure(ErrContainerCreateFailed)
			return
		}
		if env.Empty() {
			env = nil
		}
	}

	// open and lock the base path (to prevent simultaneous updates)
	state, exists, err := utils.OpenFileExclusive(unitPath, 0664)
	if err != nil {
		log.Print("install_container: Unable to lock unit file: ", err)
		resp.Failure(ErrContainerCreateFailed)
	}
	defer state.Close()

	// write a new file to disk that describes the new service
	unit, err := utils.CreateFileExclusive(unitVersionPath, 0664)
	if err != nil {
		log.Print("install_container: Unable to open unit file definition: ", err)
		resp.Failure(ErrContainerCreateFailed)
		return
	}
	defer unit.Close()

	// if this is an existing container, read the currently reserved ports
	existingPorts := port.PortPairs{}
	if exists {
		existingPorts, err = containers.GetExistingPorts(id)
		if err != nil {
			if _, ok := err.(*os.PathError); !ok {
				log.Print("install_container: Unable to read existing ports from file: ", err)
				resp.Failure(ErrContainerCreateFailed)
				return
			}
		}
	}

	// allocate and reserve ports for this container
	reserved, erra := portReserver.AtomicReserveExternalPorts(unitVersionPath, req.Ports, existingPorts)
	if erra != nil {
		log.Printf("install_container: Unable to reserve external ports: %+v", erra)
		resp.Failure(ErrContainerCreateFailedPortsReserved)
		return
	}
	if len(reserved) > 0 {
		resp.WritePendingSuccess(PendingPortMappingName, reserved)
	}

	var portSpec string
	if req.Simple && len(reserved) == 0 {
		portSpec = "-P"
	} else {
		portSpec = dockerPortSpec(reserved)
	}

	// write the environment to disk
	var environmentPath string
	if env != nil {
		if errw := env.Write(false); errw != nil {
			resp.Failure(ErrContainerCreateFailed)
			return
		}
		environmentPath = env.Id.EnvironmentPathFor()
	}

	// write the network links (if any) to disk
	if req.NetworkLinks != nil {
		if errw := req.NetworkLinks.Write(id.NetworkLinksPathFor(), false); errw != nil {
			resp.Failure(ErrContainerCreateFailed)
			return
		}
	}

	var sliceName string
	if "" == req.SystemdSlice {
		sliceName = DefaultSlice
	} else {
		sliceNames := []string{}
		sliceFound := false
//.........這裏部分代碼省略.........