// ParseCmdLineArgs configures the connection from command line arguments.
func (c *Conn) ParseCmdLineArgs(args []string) error {
// add an empty element 0 -- Ceph treats the array as the actual contents
// of argv and skips the first element (the executable name)
argc := C.int(len(args) + 1)
argv := make([]*C.char, argc)
// make the first element a string just in case it is ever examined
argv[0] = C.CString("placeholder")
defer C.free(unsafe.Pointer(argv[0]))
for i, arg := range args {
argv[i+1] = C.CString(arg)
defer C.free(unsafe.Pointer(argv[i+1]))
}
ret := C.rados_conf_parse_argv(c.cluster, argc, &argv[0])
if ret < 0 {
return RadosError(int(ret))
} else {
return nil
}
}
func (conn *Connection) configure() error {
// use default configuration
if conn.ConfigFile == "" && !conn.ParseArgs && conn.ConfigEnv == "" && len(conn.ConfigMap) == 0 {
ret := C.rados_conf_read_file(conn.cluster.handle, nil)
if err := toRadosError(ret); err != nil {
err.Message = "Unable to load default configuration."
return err
}
return nil
}
// use config file if specified
if conn.ConfigFile != "" {
config := C.CString(conn.ConfigFile)
defer freeString(config)
ret := C.rados_conf_read_file(conn.cluster.handle, config)
if err := toRadosError(ret); err != nil {
err.Message = "Unable to load configuration file. Make sure it exists and is accessible."
return err
}
}
// use config env if specified
if conn.ConfigEnv != "" {
env := C.CString(conn.ConfigEnv)
defer freeString(env)
ret := C.rados_conf_parse_env(conn.cluster.handle, env)
if err := toRadosError(ret); err != nil {
err.Message = "Unable to load configuration from env."
return err
}
}
// use config from args
if conn.ParseArgs {
argc := C.int(len(os.Args))
argv := make([]*C.char, argc)
for i, arg := range os.Args {
argv[i] = C.CString(arg)
defer freeString(argv[i+1])
}
ret := C.rados_conf_parse_argv(conn.cluster.handle, argc, &argv[0])
if err := toRadosError(ret); err != nil {
err.Message = "Unable to load configuration from args."
return err
}
}
if conn.ConfigMap != nil || len(conn.ConfigMap) > 0 {
for k, v := range conn.ConfigMap {
key := C.CString(k)
val := C.CString(v)
defer freeString(key)
defer freeString(val)
ret := C.rados_conf_set(conn.cluster.handle, key, val)
if err := toRadosError(ret); err != nil {
err.Message = fmt.Sprintf("Unable to load config %s=%s", key, val)
return err
}
}
}
return nil
}