func getSize(c *cli.Context, err error) (int64, error) {
size, err := getLowerCaseFlag(c, "size", false, err)
if err != nil {
return 0, err
}
if size == "" {
return 0, nil
}
return util.ParseSize(size)
}
func initServer(c *cli.Context) (*Server, error) {
root := c.String("root")
driverName := c.String("driver")
driverOpts := util.SliceToMap(c.StringSlice("driver-opts"))
imagesDir := c.String("images-dir")
mountsDir := c.String("mounts-dir")
defaultSize := c.String("default-volume-size")
if root == "" || driverName == "" || driverOpts == nil || imagesDir == "" || mountsDir == "" || defaultSize == "" {
return nil, fmt.Errorf("Missing or invalid parameters")
}
size, err := util.ParseSize(defaultSize)
if err != nil {
return nil, err
}
log.Debug("Config root is ", root)
if util.ConfigExists(root, getCfgName()) {
return nil, fmt.Errorf("Configuration file already existed. Don't need to initialize.")
}
if err := util.MkdirIfNotExists(imagesDir); err != nil {
return nil, err
}
log.Debug("Images would be stored at ", imagesDir)
if err := util.MkdirIfNotExists(mountsDir); err != nil {
return nil, err
}
log.Debug("Default mounting directory would be ", mountsDir)
log.WithFields(logrus.Fields{
LOG_FIELD_REASON: LOG_REASON_PREPARE,
LOG_FIELD_EVENT: LOG_EVENT_INIT,
LOG_FIELD_DRIVER: driverName,
"root": root,
"driverOpts": driverOpts,
}).Debug()
driver, err := drivers.GetDriver(driverName, root, driverOpts)
if err != nil {
return nil, err
}
log.WithFields(logrus.Fields{
LOG_FIELD_REASON: LOG_REASON_COMPLETE,
LOG_FIELD_EVENT: LOG_EVENT_INIT,
LOG_FIELD_DRIVER: driverName,
}).Debug()
config := Config{
Root: root,
Driver: driverName,
ImagesDir: imagesDir,
MountsDir: mountsDir,
DefaultVolumeSize: size,
}
server := &Server{
Config: config,
StorageDriver: driver,
NameVolumeMap: make(map[string]string),
}
err = util.SaveConfig(root, getCfgName(), &config)
return server, err
}