func (daemon *Daemon) CmdVmCreate(job *engine.Job) (err error) {
var (
vmId = fmt.Sprintf("vm-%s", pod.RandStr(10, "alpha"))
qemuPodEvent = make(chan hypervisor.VmEvent, 128)
qemuStatus = make(chan *types.QemuResponse, 128)
subQemuStatus = make(chan *types.QemuResponse, 128)
cpu = 1
mem = 128
)
if job.Args[0] != "" {
cpu, err = strconv.Atoi(job.Args[0])
if err != nil {
return err
}
}
if job.Args[1] != "" {
mem, err = strconv.Atoi(job.Args[1])
if err != nil {
return err
}
}
b := &hypervisor.BootConfig{
CPU: cpu,
Memory: mem,
Kernel: daemon.kernel,
Initrd: daemon.initrd,
Bios: daemon.bios,
Cbfs: daemon.cbfs,
}
go hypervisor.VmLoop(hypervisorDriver, vmId, qemuPodEvent, qemuStatus, b)
if err := daemon.SetQemuChan(vmId, qemuPodEvent, qemuStatus, subQemuStatus); err != nil {
glog.V(1).Infof("SetQemuChan error: %s", err.Error())
return err
}
vm := &Vm{
Id: vmId,
Pod: nil,
Status: types.S_VM_IDLE,
Cpu: cpu,
Mem: mem,
}
daemon.AddVm(vm)
// Prepare the qemu status to client
v := &engine.Env{}
v.Set("ID", vmId)
v.SetInt("Code", 0)
v.Set("Cause", "")
if _, err := v.WriteTo(job.Stdout); err != nil {
return err
}
return nil
}
func (daemon *Daemon) StartPod(podId, vmId, podArgs string) (int, string, error) {
var (
fstype string
poolName string
volPoolName string
devPrefix string
storageDriver string
rootPath string
devFullName string
rootfs string
containerInfoList = []*hypervisor.ContainerInfo{}
volumuInfoList = []*hypervisor.VolumeInfo{}
cli = daemon.dockerCli
qemuPodEvent = make(chan hypervisor.VmEvent, 128)
qemuStatus = make(chan *types.QemuResponse, 128)
subQemuStatus = make(chan *types.QemuResponse, 128)
sharedDir = path.Join(hypervisor.BaseDir, vmId, hypervisor.ShareDirTag)
podData []byte
mypod *Pod
wg *sync.WaitGroup
err error
uid string
gid string
)
if podArgs == "" {
mypod = daemon.podList[podId]
if mypod == nil {
return -1, "", fmt.Errorf("Can not find the POD instance of %s", podId)
}
podData, err = daemon.GetPodByName(podId)
if err != nil {
return -1, "", err
}
wg = mypod.Wg
} else {
podData = []byte(podArgs)
}
userPod, err := pod.ProcessPodBytes(podData)
if err != nil {
return -1, "", err
}
vm := daemon.vmList[vmId]
if vm == nil {
glog.V(1).Infof("The config: kernel=%s, initrd=%s", daemon.kernel, daemon.initrd)
var (
cpu = 1
mem = 128
)
if userPod.Resource.Vcpu > 0 {
cpu = userPod.Resource.Vcpu
}
if userPod.Resource.Memory > 0 {
mem = userPod.Resource.Memory
}
b := &hypervisor.BootConfig{
CPU: cpu,
Memory: mem,
Kernel: daemon.kernel,
Initrd: daemon.initrd,
Bios: daemon.bios,
Cbfs: daemon.cbfs,
}
go hypervisor.VmLoop(hypervisorDriver, vmId, qemuPodEvent, qemuStatus, b)
if err := daemon.SetQemuChan(vmId, qemuPodEvent, qemuStatus, subQemuStatus); err != nil {
glog.V(1).Infof("SetQemuChan error: %s", err.Error())
return -1, "", err
}
} else {
ret1, ret2, ret3, err := daemon.GetQemuChan(vmId)
if err != nil {
return -1, "", err
}
qemuPodEvent = ret1.(chan hypervisor.VmEvent)
qemuStatus = ret2.(chan *types.QemuResponse)
subQemuStatus = ret3.(chan *types.QemuResponse)
}
if podArgs != "" {
wg = new(sync.WaitGroup)
if err := daemon.CreatePod(podArgs, podId, wg); err != nil {
glog.Error(err.Error())
return -1, "", err
}
mypod = daemon.podList[podId]
}
storageDriver = daemon.Storage.StorageType
if storageDriver == "devicemapper" {
poolName = daemon.Storage.PoolName
fstype = daemon.Storage.Fstype
volPoolName = "hyper-volume-pool"
devPrefix = poolName[:strings.Index(poolName, "-pool")]
rootPath = "/var/lib/docker/devicemapper"
rootfs = "/rootfs"
} else if storageDriver == "aufs" {
rootPath = daemon.Storage.RootPath
fstype = daemon.Storage.Fstype
rootfs = ""
} else if storageDriver == "overlay" {
rootPath = daemon.Storage.RootPath
fstype = daemon.Storage.Fstype
rootfs = ""
}
// Process the 'Files' section
files := make(map[string](pod.UserFile))
for _, v := range userPod.Files {
files[v.Name] = v
}
for i, c := range mypod.Containers {
var jsonResponse *docker.ConfigJSON
if jsonResponse, err = cli.GetContainerInfo(c.Id); err != nil {
glog.Error("got error when get container Info ", err.Error())
return -1, "", err
}
if storageDriver == "devicemapper" {
if err := dm.CreateNewDevice(c.Id, devPrefix, rootPath); err != nil {
return -1, "", err
}
devFullName, err = dm.MountContainerToSharedDir(c.Id, sharedDir, devPrefix)
if err != nil {
glog.Error("got error when mount container to share dir ", err.Error())
return -1, "", err
}
fstype, err = dm.ProbeFsType(devFullName)
if err != nil {
fstype = "ext4"
}
} else if storageDriver == "aufs" {
devFullName, err = aufs.MountContainerToSharedDir(c.Id, rootPath, sharedDir, "")
if err != nil {
glog.Error("got error when mount container to share dir ", err.Error())
return -1, "", err
}
devFullName = "/" + c.Id + "/rootfs"
} else if storageDriver == "overlay" {
devFullName, err = overlay.MountContainerToSharedDir(c.Id, rootPath, sharedDir, "")
if err != nil {
glog.Error("got error when mount container to share dir ", err.Error())
return -1, "", err
}
devFullName = "/" + c.Id + "/rootfs"
}
for _, f := range userPod.Containers[i].Files {
targetPath := f.Path
file, ok := files[f.Filename]
if !ok {
continue
}
var fromFile = "/tmp/" + file.Name
defer os.RemoveAll(fromFile)
if file.Uri != "" {
err = utils.DownloadFile(file.Uri, fromFile)
if err != nil {
return -1, "", err
}
} else if file.Contents != "" {
err = ioutil.WriteFile(fromFile, []byte(file.Contents), 0666)
if err != nil {
return -1, "", err
}
} else {
continue
}
// we need to decode the content
fi, err := os.Open(fromFile)
if err != nil {
return -1, "", err
}
defer fi.Close()
fileContent, err := ioutil.ReadAll(fi)
if err != nil {
return -1, "", err
}
if file.Encoding == "base64" {
newContent, err := utils.Base64Decode(string(fileContent))
if err != nil {
return -1, "", err
}
err = ioutil.WriteFile(fromFile, []byte(newContent), 0666)
if err != nil {
return -1, "", err
}
} else {
err = ioutil.WriteFile(fromFile, []byte(file.Contents), 0666)
if err != nil {
return -1, "", err
}
}
// get the uid and gid for that attached file
fileUser := f.User
fileGroup := f.Group
u, _ := user.Current()
if fileUser == "" {
uid = u.Uid
} else {
u, _ = user.Lookup(fileUser)
uid = u.Uid
gid = u.Gid
}
if fileGroup == "" {
gid = u.Gid
}
if storageDriver == "devicemapper" {
err := dm.AttachFiles(c.Id, devPrefix, fromFile, targetPath, rootPath, f.Perm, uid, gid)
if err != nil {
glog.Error("got error when attach files ", err.Error())
return -1, "", err
}
} else if storageDriver == "aufs" {
err := aufs.AttachFiles(c.Id, fromFile, targetPath, rootPath, f.Perm, uid, gid)
if err != nil {
glog.Error("got error when attach files ", err.Error())
return -1, "", err
}
} else if storageDriver == "overlay" {
err := overlay.AttachFiles(c.Id, fromFile, targetPath, rootPath, f.Perm, uid, gid)
if err != nil {
glog.Error("got error when attach files ", err.Error())
return -1, "", err
}
}
}
env := make(map[string]string)
for _, v := range jsonResponse.Config.Env {
env[v[:strings.Index(v, "=")]] = v[strings.Index(v, "=")+1:]
}
for _, e := range userPod.Containers[i].Envs {
env[e.Env] = e.Value
}
glog.V(1).Infof("Parsing envs for container %d: %d Evs", i, len(env))
glog.V(1).Infof("The fs type is %s", fstype)
glog.V(1).Infof("WorkingDir is %s", string(jsonResponse.Config.WorkingDir))
glog.V(1).Infof("Image is %s", string(devFullName))
containerInfo := &hypervisor.ContainerInfo{
Id: c.Id,
Rootfs: rootfs,
Image: devFullName,
Fstype: fstype,
Workdir: jsonResponse.Config.WorkingDir,
Entrypoint: jsonResponse.Config.Entrypoint,
Cmd: jsonResponse.Config.Cmd,
Envs: env,
}
glog.V(1).Infof("Container Info is \n%v", containerInfo)
containerInfoList = append(containerInfoList, containerInfo)
glog.V(1).Infof("container %d created %s, workdir %s, env: %v", i, c.Id, jsonResponse.Config.WorkingDir, env)
}
// Process the 'Volumes' section
for _, v := range userPod.Volumes {
if v.Source == "" {
if storageDriver == "devicemapper" {
volName := fmt.Sprintf("%s-%s-%s", volPoolName, podId, v.Name)
dev_id, _ := daemon.GetVolumeId(podId, volName)
glog.Error("DeviceID is %d", dev_id)
if dev_id < 1 {
dev_id, _ = daemon.GetMaxDeviceId()
err := daemon.CreateVolume(podId, volName, fmt.Sprintf("%d", dev_id+1), false)
if err != nil {
return -1, "", err
}
} else {
err := daemon.CreateVolume(podId, volName, fmt.Sprintf("%d", dev_id), true)
if err != nil {
return -1, "", err
}
}
fstype, err = dm.ProbeFsType("/dev/mapper/" + volName)
if err != nil {
fstype = "ext4"
}
myVol := &hypervisor.VolumeInfo{
Name: v.Name,
Filepath: path.Join("/dev/mapper/", volName),
Fstype: fstype,
Format: "raw",
}
volumuInfoList = append(volumuInfoList, myVol)
glog.V(1).Infof("volume %s created with dm as %s", v.Name, volName)
continue
} else {
// Make sure the v.Name is given
v.Source = path.Join("/var/tmp/hyper/", v.Name)
if _, err := os.Stat(v.Source); err != nil && os.IsNotExist(err) {
if err := os.MkdirAll(v.Source, os.FileMode(0777)); err != nil {
return -1, "", err
}
}
v.Driver = "vfs"
}
}
if v.Driver != "vfs" {
glog.V(1).Infof("bypass %s volume %s", v.Driver, v.Name)
continue
}
// Process the situation if the source is not NULL, we need to bind that dir to sharedDir
var flags uintptr = syscall.MS_BIND
mountSharedDir := pod.RandStr(10, "alpha")
targetDir := path.Join(sharedDir, mountSharedDir)
glog.V(1).Infof("trying to bind dir %s to %s", v.Source, targetDir)
if err := os.MkdirAll(targetDir, 0755); err != nil && !os.IsExist(err) {
glog.Errorf("error to create dir %s for volume %s", targetDir, v.Name)
return -1, "", err
}
if err := syscall.Mount(v.Source, targetDir, "dir", flags, "--bind"); err != nil {
glog.Errorf("bind dir %s failed: %s", v.Source, err.Error())
return -1, "", err
}
myVol := &hypervisor.VolumeInfo{
Name: v.Name,
Filepath: mountSharedDir,
Fstype: "dir",
Format: "",
}
glog.V(1).Infof("dir %s is bound to %s", v.Source, targetDir)
volumuInfoList = append(volumuInfoList, myVol)
}
go func(interface{}) {
for {
qemuResponse := <-qemuStatus
subQemuStatus <- qemuResponse
if qemuResponse.Code == types.E_POD_FINISHED {
data := qemuResponse.Data.([]uint32)
daemon.SetPodContainerStatus(podId, data)
daemon.podList[podId].Vm = ""
} else if qemuResponse.Code == types.E_VM_SHUTDOWN {
if daemon.podList[podId].Status == types.S_POD_RUNNING {
daemon.podList[podId].Status = types.S_POD_SUCCEEDED
daemon.SetContainerStatus(podId, types.S_POD_SUCCEEDED)
}
daemon.podList[podId].Vm = ""
daemon.RemoveVm(vmId)
daemon.DeleteQemuChan(vmId)
mypod = daemon.podList[podId]
if mypod.Type == "kubernetes" {
switch mypod.Status {
case types.S_POD_SUCCEEDED:
if mypod.RestartPolicy == "always" {
daemon.RestartPod(mypod)
} else {
daemon.DeletePodFromDB(podId)
for _, c := range daemon.podList[podId].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)
}
break
case types.S_POD_FAILED:
if mypod.RestartPolicy != "never" {
daemon.RestartPod(mypod)
} else {
daemon.DeletePodFromDB(podId)
for _, c := range daemon.podList[podId].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)
}
break
default:
break
}
}
break
}
}
}(subQemuStatus)
if daemon.podList[podId].Type == "kubernetes" {
for _, c := range userPod.Containers {
c.RestartPolicy = "never"
}
}
fmt.Printf("POD id is %s\n", podId)
runPodEvent := &hypervisor.RunPodCommand{
Spec: userPod,
Containers: containerInfoList,
Volumes: volumuInfoList,
Wg: wg,
}
qemuPodEvent <- runPodEvent
daemon.podList[podId].Status = types.S_POD_RUNNING
// Set the container status to online
daemon.SetContainerStatus(podId, types.S_POD_RUNNING)
// wait for the qemu response
var qemuResponse *types.QemuResponse
for {
qemuResponse = <-subQemuStatus
glog.V(1).Infof("Get the response from QEMU, VM id is %s!", qemuResponse.VmId)
if qemuResponse.Code == types.E_VM_RUNNING {
continue
}
if qemuResponse.VmId == vmId {
break
}
}
if qemuResponse.Data == nil {
return qemuResponse.Code, qemuResponse.Cause, fmt.Errorf("QEMU response data is nil")
}
data := qemuResponse.Data.([]byte)
daemon.UpdateVmData(vmId, data)
// add or update the Vm info for POD
if err := daemon.UpdateVmByPod(podId, vmId); err != nil {
glog.Error(err.Error())
}
// XXX we should not close qemuStatus chan, it will be closed in shutdown process
return qemuResponse.Code, qemuResponse.Cause, nil
}