func initFunc(root, cfgName string, config map[string]string) (objectstore.ObjectStoreDriver, error) {
b := &S3ObjectStoreDriver{}
if cfgName != "" {
if util.ConfigExists(root, cfgName) {
err := util.LoadConfig(root, cfgName, b)
if err != nil {
return nil, err
}
return b, nil
} else {
return nil, fmt.Errorf("Wrong configuration file for S3 objectstore driver")
}
}
b.Service.Keys.AccessKey = config[S3_ACCESS_KEY]
b.Service.Keys.SecretKey = config[S3_SECRET_KEY]
b.Service.Region = config[S3_REGION]
b.Service.Bucket = config[S3_BUCKET]
b.Path = config[S3_PATH]
if b.Service.Keys.AccessKey == "" || b.Service.Keys.SecretKey == "" ||
b.Service.Region == "" || b.Service.Bucket == "" || b.Path == "" {
return nil, fmt.Errorf("Cannot find all required fields: %v %v %v %v %v",
S3_ACCESS_KEY, S3_SECRET_KEY, S3_REGION, S3_BUCKET, S3_PATH)
}
if strings.HasPrefix(b.Path, "/") {
return nil, fmt.Errorf("Slash '/' is not allowed at beginning of path: %v", b.Path)
}
//Test connection
if _, err := b.List(""); err != nil {
return nil, err
}
return b, nil
}
func loadServerConfig(c *cli.Context) (*Server, error) {
config := Config{}
root := c.String("root")
if root == "" {
return nil, genRequiredMissingError("root")
}
log.Debug("Ignore command line opts, loading server config from ", root)
err := util.LoadConfig(root, getCfgName(), &config)
if err != nil {
return nil, fmt.Errorf("Failed to load config:", err.Error())
}
driver, err := drivers.GetDriver(config.Driver, config.Root, nil)
if err != nil {
return nil, fmt.Errorf("Failed to load driver:", err.Error())
}
server := &Server{
Config: config,
StorageDriver: driver,
NameVolumeMap: make(map[string]string),
}
server.updateNameVolumeMap()
return server, nil
}
func getObjectStoreCfgAndDriver(root, objectstoreUUID string) (*ObjectStore, ObjectStoreDriver, error) {
b := &ObjectStore{}
err := util.LoadConfig(root, getCfgName(objectstoreUUID), b)
if err != nil {
return nil, nil, err
}
driver, err := GetObjectStoreDriver(b.Kind, root, getDriverCfgName(b.Kind, objectstoreUUID), nil)
if err != nil {
return nil, nil, err
}
log.Debug("Loaded configure for objectstore ", objectstoreUUID)
return b, driver, nil
}
func (config *Config) loadVolume(uuid string) *Volume {
cfgName, err := getVolumeCfgName(uuid)
if err != nil {
return nil
}
if !util.ConfigExists(config.Root, cfgName) {
return nil
}
volume := &Volume{}
if err := util.LoadConfig(config.Root, cfgName, volume); err != nil {
log.Error("Failed to load volume json ", cfgName)
return nil
}
return volume
}
func Deregister(root, id string) error {
b := &ObjectStore{}
err := util.LoadConfig(root, getCfgName(id), b)
if err != nil {
return err
}
err = removeDriverConfigFile(root, b.Kind, id)
if err != nil {
return err
}
err = removeConfigFile(root, id)
if err != nil {
return err
}
log.Debug("Deregistered block store ", id)
return nil
}
func (device *Device) loadImage(uuid string) *Image {
if uuid == "" {
return nil
}
cfgName, err := getImageCfgName(uuid)
if err != nil {
return nil
}
if !util.ConfigExists(device.Root, cfgName) {
return nil
}
image := &Image{}
if err := util.LoadConfig(device.Root, cfgName, image); err != nil {
log.Error("Failed to load volume json ", cfgName)
return nil
}
return image
}
func initFunc(root, cfgName string, config map[string]string) (objectstore.ObjectStoreDriver, error) {
b := &VfsObjectStoreDriver{}
if cfgName != "" {
if util.ConfigExists(root, cfgName) {
err := util.LoadConfig(root, cfgName, b)
if err != nil {
return nil, err
}
return b, nil
} else {
return nil, fmt.Errorf("Wrong configuration file for VFS objectstore driver")
}
}
//return temporily driver for loading objectstore config
b.Path = config[VFS_PATH]
if b.Path == "" {
return nil, fmt.Errorf("Cannot find required field %v", VFS_PATH)
}
if _, err := b.List(""); err != nil {
return nil, fmt.Errorf("VFS path %v doesn't exist or is not a directory", b.Path)
}
return b, nil
}
func Init(root, cfgName string, config map[string]string) (drivers.Driver, error) {
devicemapper.LogInitVerbose(1)
devicemapper.LogInit(&DMLogger{})
if supported := devicemapper.UdevSetSyncSupport(true); !supported {
return nil, fmt.Errorf("Udev sync is not supported. Cannot proceed.")
}
if util.ConfigExists(root, cfgName) {
dev := Device{}
err := util.LoadConfig(root, cfgName, &dev)
d := &Driver{
Mutex: &sync.Mutex{},
}
if err != nil {
return d, err
}
d.Device = dev
d.configName = cfgName
d.root = root
if err := d.activatePool(); err != nil {
return d, err
}
return d, nil
}
dev, err := verifyConfig(config)
if err != nil {
return nil, err
}
dev.Root = root
dataDev, err := os.Open(dev.DataDevice)
if err != nil {
return nil, err
}
defer dataDev.Close()
metadataDev, err := os.Open(dev.MetadataDevice)
if err != nil {
return nil, err
}
defer metadataDev.Close()
thinpSize, err := devicemapper.GetBlockDeviceSize(dataDev)
if err != nil {
return nil, err
}
dev.ThinpoolSize = int64(thinpSize)
dev.LastDevID = 0
err = createPool(filepath.Base(dev.ThinpoolDevice), dataDev, metadataDev, uint32(dev.ThinpoolBlockSize))
if err != nil {
return nil, err
}
err = util.SaveConfig(root, cfgName, &dev)
if err != nil {
return nil, err
}
d := &Driver{
root: root,
configName: cfgName,
Device: *dev,
Mutex: &sync.Mutex{},
}
log.Debug("Init done")
return d, nil
}