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Merge pull request #42 from krigbaum/master
Cephfs
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,148 @@ | ||
| package drivers | ||
|
|
||
| import ( | ||
| "fmt" | ||
| log "github.com/Sirupsen/logrus" | ||
| "github.com/docker/go-plugins-helpers/volume" | ||
| "os" | ||
| "strings" | ||
| ) | ||
|
|
||
| const ( | ||
| CephOptions = "cephopts" | ||
| ) | ||
|
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| type cephDriver struct { | ||
| volumeDriver | ||
| username string | ||
| password string | ||
| context string | ||
| cephmount string | ||
| cephport string | ||
| localmount string | ||
| cephopts map[string]string | ||
| } | ||
|
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| //var ( | ||
| // EmptyMap = map[string]string{} | ||
| //) | ||
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| func NewCephDriver(root string, username string, password string, context string, cephmount string, cephport string, localmount string, cephopts string) cephDriver { | ||
| d := cephDriver{ | ||
| volumeDriver: newVolumeDriver(root), | ||
| username: username, | ||
| password: password, | ||
| context: context, | ||
| cephmount: cephmount, | ||
| cephport: cephport, | ||
| localmount: localmount, | ||
| cephopts: map[string]string{}, | ||
| } | ||
| if len(cephopts) > 0 { | ||
| d.cephopts[CephOptions] = cephopts | ||
| } | ||
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| return d | ||
| } | ||
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| func (n cephDriver) Mount(r volume.Request) volume.Response { | ||
| log.Debugf("Entering Mount: %v", r) | ||
| n.m.Lock() | ||
| defer n.m.Unlock() | ||
| hostdir := mountpoint(n.root, r.Name) | ||
| source := n.fixSource(r) | ||
| if n.mountm.HasMount(r.Name) && n.mountm.Count(r.Name) > 0 { | ||
| log.Infof("Using existing CEPH volume mount: %s", hostdir) | ||
| n.mountm.Increment(r.Name) | ||
| return volume.Response{Mountpoint: hostdir} | ||
| } | ||
|
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| log.Infof("Mounting CEPH volume %s on %s", source, hostdir) | ||
| if err := createDest(hostdir); err != nil { | ||
| return volume.Response{Err: err.Error()} | ||
| } | ||
|
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| if err := n.mountVolume(source, hostdir); err != nil { | ||
| return volume.Response{Err: err.Error()} | ||
| } | ||
| n.mountm.Add(r.Name, hostdir) | ||
| return volume.Response{Mountpoint: hostdir} | ||
| } | ||
|
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| func (n cephDriver) Unmount(r volume.Request) volume.Response { | ||
| log.Debugf("Entering Unmount: %v", r) | ||
|
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| n.m.Lock() | ||
| defer n.m.Unlock() | ||
| hostdir := mountpoint(n.root, r.Name) | ||
|
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| if n.mountm.HasMount(r.Name) { | ||
| if n.mountm.Count(r.Name) > 1 { | ||
| log.Printf("Skipping unmount for %s - in use by other containers", r.Name) | ||
| n.mountm.Decrement(r.Name) | ||
| return volume.Response{} | ||
| } | ||
| n.mountm.Decrement(r.Name) | ||
| } | ||
|
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| log.Infof("Unmounting volume name %s from %s", r.Name, hostdir) | ||
|
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| if err := run(fmt.Sprintf("umount %s", hostdir)); err != nil { | ||
| return volume.Response{Err: err.Error()} | ||
| } | ||
|
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| n.mountm.DeleteIfNotManaged(r.Name) | ||
|
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| if err := os.RemoveAll(hostdir); err != nil { | ||
| return volume.Response{Err: err.Error()} | ||
| } | ||
|
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| return volume.Response{} | ||
| } | ||
|
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| func (n cephDriver) fixSource(r volume.Request) string { | ||
| if n.mountm.HasOption(r.Name, ShareOpt) { | ||
| return n.mountm.GetOption(r.Name, ShareOpt) | ||
| } | ||
| source := strings.Split(r.Name, "/") | ||
| source[0] = source[0] + ":" + n.cephport + ":" | ||
| return strings.Join(source, "/") | ||
| } | ||
|
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| func (n cephDriver) mountVolume(source, dest string) error { | ||
| var cmd string | ||
|
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| options := n.mountOptions(n.mountm.GetOptions(dest)) | ||
| opts := "" | ||
| if val, ok := options[CephOptions]; ok { | ||
| fmt.Println("opts = ", val) | ||
| opts = "-o " + val | ||
| } | ||
|
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| mountCmd := "mount" | ||
|
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| if log.GetLevel() == log.DebugLevel { | ||
| mountCmd = mountCmd + " -t ceph" | ||
| } | ||
|
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| //cmd = fmt.Sprintf("%s -t ceph %s:%s:/ -o %s,%s,%s %s %s", mountCmd, n.cephmount, n.cephport, n.context, n.username, n.password, opts, dest) | ||
| cmd = fmt.Sprintf("%s -t ceph %s -o %s,%s,%s %s %s", mountCmd, source, n.context, n.username, n.password, opts, dest) | ||
|
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| log.Debugf("exec: %s\n", cmd) | ||
| return run(cmd) | ||
| } | ||
|
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| func (n cephDriver) mountOptions(src map[string]string) map[string]string { | ||
| if len(n.cephopts) == 0 && len(src) == 0 { | ||
| return EmptyMap | ||
| } | ||
|
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| dst := map[string]string{} | ||
| for k, v := range n.cephopts { | ||
| dst[k] = v | ||
| } | ||
| for k, v := range src { | ||
| dst[k] = v | ||
| } | ||
| return dst | ||
| } |
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