// NewConnWithClusterAndUser creates a new connection object for a specific cluster and username.
// It returns the connection and an error, if any.
func NewConnWithClusterAndUser(clusterName string, userName string) (*Conn, error) {
c_cluster_name := C.CString(clusterName)
defer C.free(unsafe.Pointer(c_cluster_name))
c_name := C.CString(userName)
defer C.free(unsafe.Pointer(c_name))
conn := &Conn{}
ret := C.rados_create2(&conn.cluster, c_cluster_name, c_name, 0)
if ret == 0 {
return conn, nil
} else {
return nil, RadosError(int(ret))
}
}
// create the cluster handle with the ClusterName and UserName configured.
func (conn *Connection) createClusterHandle() error {
conn.cluster = new(Cluster)
var ret C.int
switch {
// use rados_create2() since cluster and user are both specified
case conn.ClusterName != "" && conn.UserName != "":
cluster := C.CString(conn.ClusterName)
user := C.CString(conn.UserName)
defer freeString(cluster)
defer freeString(user)
ret = C.rados_create2(&conn.cluster.handle, cluster, user, 0)
// use rados_create() with the given UserName
case conn.ClusterName == "" && conn.UserName != "":
user := C.CString(conn.UserName)
defer freeString(user)
ret = C.rados_create(&conn.cluster.handle, user)
// use rados_create() with a nil user
case conn.ClusterName == "" && conn.UserName == "":
ret = C.rados_create(&conn.cluster.handle, nil)
default:
return &RadosError{
Code: -2,
Message: "Unable to create cluster handle. If cluster name is specified, also include qualified user name.",
}
}
if err := toRadosError(ret); err != nil {
err.Message = "Unable to create cluster handle. Make sure you have access to the ceph cluster."
return err
}
return nil
}