// New constructs a new Driver
func New(params DriverParameters) (*Driver, error) {
var conn *rados.Conn
var err error
if params.username != "" {
log.Infof("Opening connection to pool %s using user %s", params.poolname, params.username)
conn, err = rados.NewConnWithUser(params.username)
} else {
log.Infof("Opening connection to pool %s", params.poolname)
conn, err = rados.NewConn()
}
if err != nil {
return nil, err
}
err = conn.ReadDefaultConfigFile()
if err != nil {
return nil, err
}
err = conn.Connect()
if err != nil {
return nil, err
}
log.Infof("Connected")
ioctx, err := conn.OpenIOContext(params.poolname)
log.Infof("Connected to pool %s", params.poolname)
if err != nil {
return nil, err
}
d := &driver{
Ioctx: ioctx,
Conn: conn,
chunksize: params.chunksize,
}
return &Driver{
baseEmbed: baseEmbed{
Base: base.Base{
StorageDriver: d,
},
},
}, nil
}
// connect builds up the ceph conn and default pool
func (d *cephRBDVolumeDriver) connect() {
log.Println("INFO: connecting to Ceph and default pool context")
d.m.Lock()
defer d.m.Unlock()
// create reusable go-ceph Client Connection
var cephConn *rados.Conn
var err error
if d.cluster == "" {
cephConn, err = rados.NewConnWithUser(d.user)
} else {
// FIXME: TODO: can't seem to use a cluster name -- get error -22 from go-ceph/rados:
// panic: Unable to create ceph connection to cluster=ceph with user=admin: rados: ret=-22
cephConn, err = rados.NewConnWithClusterAndUser(d.cluster, d.user)
}
if err != nil {
log.Panicf("ERROR: Unable to create ceph connection to cluster=%s with user=%s: %s", d.cluster, d.user, err)
}
// read ceph.conf and setup connection
if d.config == "" {
err = cephConn.ReadDefaultConfigFile()
} else {
err = cephConn.ReadConfigFile(d.config)
}
if err != nil {
log.Panicf("ERROR: Unable to read ceph config: %s", err)
}
err = cephConn.Connect()
if err != nil {
log.Panicf("ERROR: Unable to connect to Ceph: %s", err)
}
// can now set conn in driver
d.conn = cephConn
// setup the default context (pool most likely to be used)
defaultContext, err := d.openContext(d.defaultPool)
if err != nil {
log.Panicf("ERROR: Unable to connect to default Ceph Pool: %s", err)
}
d.defaultIoctx = defaultContext
}