예제 #1
0
파일: rados.go 프로젝트: glycerine/radosgo
// New returns a RADOS cluster handle that is used to create IO
// Contexts and perform other RADOS actions. If configFile is
// non-empty, RADOS will look for its configuration there, otherwise
// the default paths will be searched (e.g., /etc/ceph/ceph.conf).
//
// TODO: allow caller to specify Ceph user.
func New(configFile string) (*Rados, error) {
	r := &Rados{}
	var cerr C.int

	if cerr = C.rados_create(&r.rados, nil); cerr < 0 {
		return nil, radosReturnCodeError(cerr)
	}

	if configFile == "" {
		cerr = C.rados_conf_read_file(r.rados, nil)
	} else {
		cconfigFile := C.CString(configFile)
		defer C.free(unsafe.Pointer(cconfigFile))

		cerr = C.rados_conf_read_file(r.rados, cconfigFile)
	}

	if cerr < 0 {
		return nil, radosReturnCodeError(cerr)
	}

	if cerr = C.rados_connect(r.rados); cerr < 0 {
		return nil, radosReturnCodeError(cerr)
	}

	// Fill in cluster statistics
	if err := r.Stat(); err != nil {
		r.Release()
		return nil, err
	}

	return r, nil
}
예제 #2
0
func (rc *RadosCluster) Connect(conf string, pool string) (err error) {
	c_conf := C.CString(conf)
	c_pool := C.CString(pool)
	defer C.free(unsafe.Pointer(c_conf))
	defer C.free(unsafe.Pointer(c_pool))

	ret := C.rados_create(&rc.Cluster, nil)
	if ret < 0 {
		return errors.New("create cluster failed")
	}

	ret = C.rados_conf_read_file(rc.Cluster, c_conf)
	if ret < 0 {
		return errors.New("read conf file failed")
	}

	ret = C.rados_connect(rc.Cluster)
	if ret < 0 {
		return errors.New("connect to cluster failed")
	}

	ret = C.rados_ioctx_create(rc.Cluster, c_pool, &rc.Ioctx)
	if ret < 0 {
		return errors.New("create ioctx failed")
	}
	return nil
}
예제 #3
0
파일: conn.go 프로젝트: Xmagicer/origin
// ReadDefaultConfigFile configures the connection using a Ceph configuration
// file located at default locations.
func (c *Conn) ReadDefaultConfigFile() error {
	ret := C.rados_conf_read_file(c.cluster, nil)
	if ret == 0 {
		return nil
	} else {
		return RadosError(int(ret))
	}
}
예제 #4
0
/*
Configure the cluster handle using a Ceph config file.

If path is NULL, the default locations are searched, and the first found is used. The locations are:

$CEPH_CONF (environment variable)
/etc/ceph/ceph.conf
~/.ceph/config
ceph.conf (in the current working directory)
*/
func (r *Rados) ClusterAutoConfig() error {
	cerr := C.rados_conf_read_file(*r.cluster, nil)
	if cerr < 0 {
		return errors.New("read config failed")
	}

	return nil
}
예제 #5
0
파일: conn.go 프로젝트: Xmagicer/origin
// ReadConfigFile configures the connection using a Ceph configuration file.
func (c *Conn) ReadConfigFile(path string) error {
	c_path := C.CString(path)
	defer C.free(unsafe.Pointer(c_path))
	ret := C.rados_conf_read_file(c.cluster, c_path)
	if ret == 0 {
		return nil
	} else {
		return RadosError(int(ret))
	}
}
예제 #6
0
func (r *Rados) ClusterConfig(filename string) error {
	cfilename := C.CString(filename)
	defer func() {
		C.free(unsafe.Pointer(cfilename))
	}()
	cerr := C.rados_conf_read_file(*(r.cluster), cfilename)
	if cerr < 0 {
		return errors.New("read config failed")
	}

	return nil
}
예제 #7
0
func getRados(username string) (C.rados_t, error) {
	var cluster C.rados_t

	str := C.CString(username)
	defer C.free(unsafe.Pointer(str))

	if i := C.rados_create(&cluster, str); i < 0 {
		return nil, strerror(i)
	}

	if i := C.rados_conf_read_file(cluster, nil); i < 0 {
		return nil, strerror(i)
	}

	if i := C.rados_connect(cluster); i != 0 {
		return nil, strerror(i)
	}

	return cluster, nil
}
예제 #8
0
파일: grados.go 프로젝트: objStorage/grados
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
}