Golang glog.Warningf函數代碼示例

func (vc *VBoxContext) Kill(ctx *hypervisor.VmContext) {
	go func() {
		// detach the bootable Disk
		m := vc.Machine
		if m == nil {
			return
		}
		name := m.Name
		m.Poweroff()
		if err := vc.detachDisk(m.Name, 0); err != nil {
			glog.Warningf("failed to detach the disk of VBox(%s), %s", name, err.Error())
		}
		if ctx.Keep < types.VM_KEEP_AFTER_SHUTDOWN {
			if err := m.Delete(); err != nil {
				glog.Warningf("failed to delete the VBox(%s), %s", name, err.Error())
			}
			delete(vc.Driver.Machines, name)
			args := fmt.Sprintf("ps aux | grep %s | grep -v grep | awk '{print \"kill -9 \" $2}' | sh", name)
			cmd := exec.Command("/bin/sh", "-c", args)
			if err := cmd.Run(); err != nil {
				ctx.Hub <- &hypervisor.VmKilledEvent{Success: false}
				return
			}
			os.RemoveAll(path.Join(hypervisor.BaseDir, "vm", name))
		}
		ctx.Hub <- &hypervisor.VmKilledEvent{Success: true}
	}()
}

func (daemon *Daemon) CmdTty(job *engine.Job) (err error) {
	if len(job.Args) < 3 {
		return nil
	}
	var (
		podID     = job.Args[0]
		tag       = job.Args[1]
		h         = job.Args[2]
		w         = job.Args[3]
		container string
		vmid      string
	)

	if strings.Contains(podID, "pod-") {
		container = ""
		vmid, err = daemon.GetVmByPodId(podID)
		if err != nil {
			return err
		}
	} else if strings.Contains(podID, "vm-") {
		vmid = podID
	} else {
		container = podID
		podID, err = daemon.GetPodByContainer(container)
		if err != nil {
			return err
		}
		vmid, err = daemon.GetVmByPodId(podID)
		if err != nil {
			return err
		}
	}

	vm, ok := daemon.VmList[vmid]
	if !ok {
		return fmt.Errorf("vm %s doesn't exist!")
	}

	row, err := strconv.Atoi(h)
	if err != nil {
		glog.Warningf("Window row %s incorrect!", h)
	}
	column, err := strconv.Atoi(w)
	if err != nil {
		glog.Warningf("Window column %s incorrect!", h)
	}

	err = vm.Tty(tag, row, column)
	if err != nil {
		return err
	}

	glog.V(1).Infof("Success to resize the tty!")
	return nil
}

func (daemon *Daemon) verifyContainerSettings(hostConfig *runconfig.HostConfig) ([]string, error) {
	var warnings []string

	if hostConfig == nil {
		return warnings, nil
	}

	if hostConfig.Memory != 0 && hostConfig.Memory < 4194304 {
		return warnings, fmt.Errorf("Minimum memory limit allowed is 4MB")
	}
	if hostConfig.Memory > 0 && !daemon.SystemConfig().MemoryLimit {
		warnings = append(warnings, "Your kernel does not support memory limit capabilities. Limitation discarded.")
		glog.Warningf("Your kernel does not support memory limit capabilities. Limitation discarded.")
		hostConfig.Memory = 0
	}
	if hostConfig.Memory > 0 && hostConfig.MemorySwap != -1 && !daemon.SystemConfig().SwapLimit {
		warnings = append(warnings, "Your kernel does not support swap limit capabilities, memory limited without swap.")
		glog.Warningf("Your kernel does not support swap limit capabilities, memory limited without swap.")
		hostConfig.MemorySwap = -1
	}
	if hostConfig.Memory > 0 && hostConfig.MemorySwap > 0 && hostConfig.MemorySwap < hostConfig.Memory {
		return warnings, fmt.Errorf("Minimum memoryswap limit should be larger than memory limit, see usage.")
	}
	if hostConfig.Memory == 0 && hostConfig.MemorySwap > 0 {
		return warnings, fmt.Errorf("You should always set the Memory limit when using Memoryswap limit, see usage.")
	}
	if hostConfig.CpuPeriod > 0 && !daemon.SystemConfig().CpuCfsPeriod {
		warnings = append(warnings, "Your kernel does not support CPU cfs period. Period discarded.")
		glog.Warningf("Your kernel does not support CPU cfs period. Period discarded.")
		hostConfig.CpuPeriod = 0
	}
	if hostConfig.CpuQuota > 0 && !daemon.SystemConfig().CpuCfsQuota {
		warnings = append(warnings, "Your kernel does not support CPU cfs quota. Quota discarded.")
		glog.Warningf("Your kernel does not support CPU cfs quota. Quota discarded.")
		hostConfig.CpuQuota = 0
	}
	if hostConfig.BlkioWeight > 0 && (hostConfig.BlkioWeight < 10 || hostConfig.BlkioWeight > 1000) {
		return warnings, fmt.Errorf("Range of blkio weight is from 10 to 1000.")
	}
	if hostConfig.OomKillDisable && !daemon.SystemConfig().OomKillDisable {
		hostConfig.OomKillDisable = false
		return warnings, fmt.Errorf("Your kernel does not support oom kill disable.")
	}
	if daemon.SystemConfig().IPv4ForwardingDisabled {
		warnings = append(warnings, "IPv4 forwarding is disabled. Networking will not work.")
		glog.Warningf("IPv4 forwarding is disabled. Networking will not work")
	}
	return warnings, nil
}

func waitInitReady(ctx *VmContext) {
	conn, err := UnixSocketConnect(ctx.HyperSockName)
	if err != nil {
		glog.Error("Cannot connect to hyper socket ", err.Error())
		ctx.Hub <- &InitFailedEvent{
			Reason: "Cannot connect to hyper socket " + err.Error(),
		}
		return
	}

	glog.Info("Wating for init messages...")

	msg, err := readVmMessage(conn.(*net.UnixConn))
	if err != nil {
		glog.Error("read init message failed... ", err.Error())
		ctx.Hub <- &InitFailedEvent{
			Reason: "read init message failed... " + err.Error(),
		}
		conn.Close()
	} else if msg.code == INIT_READY {
		glog.Info("Get init ready message")
		ctx.Hub <- &InitConnectedEvent{conn: conn.(*net.UnixConn)}
		go waitCmdToInit(ctx, conn.(*net.UnixConn))
	} else {
		glog.Warningf("Get init message %d", msg.code)
		ctx.Hub <- &InitFailedEvent{
			Reason: fmt.Sprintf("Get init message %d", msg.code),
		}
		conn.Close()
	}
}

func makeHttpHandler(eng *engine.Engine, logging bool, localMethod string, localRoute string, handlerFunc HttpApiFunc, corsHeaders string, dockerVersion version.Version) http.HandlerFunc {
	return func(w http.ResponseWriter, r *http.Request) {
		// log the request
		glog.V(0).Infof("Calling %s %s", localMethod, localRoute)

		if logging {
			glog.V(1).Infof("%s %s", r.Method, r.RequestURI)
		}

		if strings.Contains(r.Header.Get("User-Agent"), "Docker-Client/") {
			userAgent := strings.Split(r.Header.Get("User-Agent"), "/")
			if len(userAgent) == 2 && !dockerVersion.Equal(version.Version(userAgent[1])) {
				glog.Warningf("client and server don't have the same version (client: %s, server: %s)", userAgent[1], dockerVersion)
			}
		}
		version := version.Version(mux.Vars(r)["version"])
		if version == "" {
			version = utils.APIVERSION
		}
		if corsHeaders != "" {
			writeCorsHeaders(w, r, corsHeaders)
		}

		if version.GreaterThan(utils.APIVERSION) {
			http.Error(w, fmt.Errorf("client and server don't have same version (client API version: %s, server API version: %s)", version, utils.APIVERSION).Error(), http.StatusNotFound)
			return
		}

		if err := handlerFunc(eng, version, w, r, mux.Vars(r)); err != nil {
			glog.Errorf("Handler for %s %s returned error: %s", localMethod, localRoute, err)
			httpError(w, err)
		}
	}
}

func (vc *VBoxContext) RemoveDir(name string) error {
	if err := vc.Machine.RemoveSharedFolder(vc.Machine.Name, name); err != nil {
		glog.Warningf("The shared folder is failed to remove, since %s", err.Error())
		return err
	}
	return nil
}

func (d *Driver) createDisk(id, parent string) error {
	// create a raw image
	if _, err := os.Stat(fmt.Sprintf("%s/images/%s.vdi", d.RootPath(), id)); err == nil {
		return nil
	}
	var (
		parentDisk string = d.BaseImage()
		idDisk     string = fmt.Sprintf("%s/images/%s.vdi", d.RootPath(), id)
	)
	if parent != "" {
		parentDisk = fmt.Sprintf("%s/images/%s.vdi", d.RootPath(), parent)
	}
	params := fmt.Sprintf("vboxmanage createhd --filename %s --diffparent %s --format VDI", idDisk, parentDisk)
	cmd := exec.Command("/bin/sh", "-c", params)
	if output, err := cmd.CombinedOutput(); err != nil {
		glog.Warningf(string(output))
		if strings.Contains(string(output), "not found in the media registry") {
			if err := virtualbox.RegisterDisk(d.pullVm, d.pullVm, parentDisk, 4); err != nil {
				return err
			}
		}
	}
	os.Chmod(idDisk, 0755)
	params = fmt.Sprintf("vboxmanage closemedium %s", idDisk)
	cmd = exec.Command("/bin/sh", "-c", params)
	if output, err := cmd.CombinedOutput(); err != nil {
		glog.Error(err.Error())
		return fmt.Errorf("error to run vboxmanage closemedium, %s", output)
	}
	return nil
}

func (devices *DeviceSet) getUnderlyingAvailableSpace(loopFile string) (uint64, error) {
	buf := new(syscall.Statfs_t)
	if err := syscall.Statfs(loopFile, buf); err != nil {
		glog.Warningf("Couldn't stat loopfile filesystem %v: %v", loopFile, err)
		return 0, err
	}
	return buf.Bfree * uint64(buf.Bsize), nil
}

// Poweroff forcefully stops the machine. State is lost and might corrupt the disk image.
func (m *Machine) Poweroff() error {
	switch m.State {
	case Poweroff, Aborted, Saved:
		glog.Warningf("The machine status is Poweroff, Aborted, Saved")
		return nil
	}
	return vbm("controlvm", m.Name, "poweroff")
}

func (d *Driver) Setup() (err error) {
	var (
		vm        *hypervisor.Vm
		ids       []string
		parentIds []string
	)
	if d.daemon == nil {
		d.daemon, err = GetDaemon()
		if err != nil {
			return err
		}
	}
	vm, err = d.daemon.StartVm(d.pullVm, 1, 64, false, types.VM_KEEP_AFTER_SHUTDOWN)
	if err != nil {
		glog.Errorf(err.Error())
		return err
	}
	defer func() {
		if err != nil {
			d.daemon.KillVm(vm.Id)
		}
	}()

	if err = d.daemon.WaitVmStart(vm); err != nil {
		glog.Error(err)
		return err
	}

	if err = virtualbox.RegisterDisk(d.pullVm, d.pullVm, d.BaseImage(), 4); err != nil {
		glog.Errorf(err.Error())
		return err
	}
	ids, err = loadIds(path.Join(d.RootPath(), "layers"))
	if err != nil {
		return err
	}

	for _, id := range ids {
		if d.disks[id] == true {
			continue
		}
		parentIds, err = getParentIds(d.RootPath(), id)
		if err != nil {
			glog.Warningf(err.Error())
			continue
		}
		for _, cid := range parentIds {
			if d.disks[cid] == true {
				continue
			}
			d.Exists(cid)
			d.disks[cid] = true
		}
		d.disks[id] = true
	}

	return nil
}

func checkKernel() error {
	// Check for unsupported kernel versions
	// FIXME: it would be cleaner to not test for specific versions, but rather
	// test for specific functionalities.
	// Unfortunately we can't test for the feature "does not cause a kernel panic"
	// without actually causing a kernel panic, so we need this workaround until
	// the circumstances of pre-3.10 crashes are clearer.
	// For details see https://github.com/docker/docker/issues/407
	if k, err := kernel.GetKernelVersion(); err != nil {
		glog.Warningf("%s", err)
	} else {
		if kernel.CompareKernelVersion(k, &kernel.KernelVersionInfo{Kernel: 3, Major: 10, Minor: 0}) < 0 {
			if os.Getenv("DOCKER_NOWARN_KERNEL_VERSION") == "" {
				glog.Warningf("You are running linux kernel version %s, which might be unstable running docker. Please upgrade your kernel to 3.10.0.", k.String())
			}
		}
	}
	return nil
}

func (devices *DeviceSet) isRealFile(loopFile string) (bool, error) {
	if loopFile != "" {
		fi, err := os.Stat(loopFile)
		if err != nil {
			glog.Warningf("Couldn't stat loopfile %v: %v", loopFile, err)
			return false, err
		}
		return fi.Mode().IsRegular(), nil
	}
	return false, nil
}

func UmountVolume(shareDir, volPath string, name string, hub chan VmEvent) {
	mount := path.Join(shareDir, volPath)
	success := true
	err := syscall.Unmount(mount, 0)
	if err != nil {
		glog.Warningf("Cannot umount volume %s: %s", mount, err.Error())
		err = syscall.Unmount(mount, syscall.MNT_DETACH)
		if err != nil {
			glog.Warningf("Cannot lazy umount volume %s: %s", mount, err.Error())
			success = false
		} else {
			success = true
		}
	}
	if success == true {
		os.Remove(mount)
	}

	// After umount that device, we need to delete it
	hub <- &VolumeUnmounted{Name: name, Success: success}
}

func (daemon *Daemon) Restore() error {
	if daemon.GetPodNum() == 0 {
		return nil
	}

	podList := map[string]string{}

	iter := daemon.db.NewIterator(util.BytesPrefix([]byte("pod-")), nil)
	for iter.Next() {
		key := iter.Key()
		value := iter.Value()
		if strings.Contains(string(key), "pod-container-") {
			glog.V(1).Infof(string(value))
			continue
		}
		glog.V(1).Infof("Get the pod item, pod is %s!", key)
		err := daemon.db.Delete(key, nil)
		if err != nil {
			return err
		}
		podList[string(key)[4:]] = string(value)
	}
	iter.Release()
	err := iter.Error()
	if err != nil {
		return err
	}
	daemon.PodList.Lock()
	glog.V(2).Infof("lock PodList")
	defer glog.V(2).Infof("unlock PodList")
	defer daemon.PodList.Unlock()

	for k, v := range podList {
		err = daemon.CreatePod(k, v, false)
		if err != nil {
			glog.Warningf("Got a unexpected error, %s", err.Error())
			continue
		}
		vmId, err := daemon.DbGetVmByPod(k)
		if err != nil {
			glog.V(1).Info(err.Error(), " for ", k)
			continue
		}
		p, _ := daemon.PodList.Get(k)
		if err := p.AssociateVm(daemon, string(vmId)); err != nil {
			glog.V(1).Info("Some problem during associate vm %s to pod %s, %v", string(vmId), k, err)
			// continue to next
		}
	}

	return nil
}

func (daemon *Daemon) CleanPod(podId string) (int, string, error) {
	var (
		code  = 0
		cause = ""
		err   error
	)
	os.RemoveAll(path.Join(utils.HYPER_ROOT, "services", podId))
	pod, ok := daemon.PodList.Get(podId)
	if !ok {
		return -1, "", fmt.Errorf("Can not find that Pod(%s)", podId)
	}
	if pod.status.Status != types.S_POD_RUNNING {
		// If the pod type is kubernetes, we just remove the pod from the pod list.
		// The persistent data has been removed since we got the E_VM_SHUTDOWN event.
		if pod.status.Type == "kubernetes" {
			daemon.RemovePod(podId)
			code = types.E_OK
		} else {
			daemon.DeletePodFromDB(podId)
			for _, c := range pod.status.Containers {
				glog.V(1).Infof("Ready to rm container: %s", c.Id)
				if _, _, err = daemon.DockerCli.SendCmdDelete(c.Id); err != nil {
					glog.Warningf("Error to rm container: %s", err.Error())
				}
			}
			daemon.RemovePod(podId)
			daemon.DeletePodContainerFromDB(podId)
			daemon.DeleteVolumeId(podId)
			code = types.E_OK
		}
	} else {
		code, cause, err = daemon.StopPod(podId, "yes")
		if err != nil {
			return -1, "", err
		}
		if code == types.E_VM_SHUTDOWN {
			daemon.DeletePodFromDB(podId)
			for _, c := range pod.status.Containers {
				glog.V(1).Infof("Ready to rm container: %s", c.Id)
				if _, _, err = daemon.DockerCli.SendCmdDelete(c.Id); err != nil {
					glog.V(1).Infof("Error to rm container: %s", err.Error())
				}
			}
			daemon.RemovePod(podId)
			daemon.DeletePodContainerFromDB(podId)
			daemon.DeleteVolumeId(podId)
		}
		code = types.E_OK
	}

	return code, cause, nil
}