func (t *Topology) UnRegisterVolumeLayout(v storage.VolumeInfo, dn *DataNode) {
glog.Infof("removing volume info:%+v", v)
t.GetVolumeLayout(v.Collection, v.ReplicaPlacement, v.Ttl).UnRegisterVolume(&v, dn)
}
func NewFilerServer(r *http.ServeMux, ip string, port int, master string, dir string, collection string,
replication string, redirectOnRead bool, disableDirListing bool,
confFile string,
maxMB int,
secret string,
cassandra_server string, cassandra_keyspace string,
redis_server string, redis_password string, redis_database int,
) (fs *FilerServer, err error) {
fs = &FilerServer{
master: master,
collection: collection,
defaultReplication: replication,
redirectOnRead: redirectOnRead,
disableDirListing: disableDirListing,
maxMB: maxMB,
port: ip + ":" + strconv.Itoa(port),
}
var setting *filerConf
if confFile != "" {
setting, err = parseConfFile(confFile)
if err != nil {
return nil, err
}
} else {
setting = new(filerConf)
}
if setting.MysqlConf != nil && len(setting.MysqlConf) != 0 {
mysql_store := mysql_store.NewMysqlStore(setting.MysqlConf, setting.IsSharding, setting.ShardCount)
fs.filer = flat_namespace.NewFlatNamespaceFiler(master, mysql_store)
} else if cassandra_server != "" {
cassandra_store, err := cassandra_store.NewCassandraStore(cassandra_keyspace, cassandra_server)
if err != nil {
glog.Fatalf("Can not connect to cassandra server %s with keyspace %s: %v", cassandra_server, cassandra_keyspace, err)
}
fs.filer = flat_namespace.NewFlatNamespaceFiler(master, cassandra_store)
} else if redis_server != "" {
redis_store := redis_store.NewRedisStore(redis_server, redis_password, redis_database)
fs.filer = flat_namespace.NewFlatNamespaceFiler(master, redis_store)
} else {
if fs.filer, err = embedded_filer.NewFilerEmbedded(master, dir); err != nil {
glog.Fatalf("Can not start filer in dir %s : %v", dir, err)
return
}
r.HandleFunc("/admin/mv", fs.moveHandler)
r.HandleFunc("/admin/register", fs.registerHandler)
}
r.HandleFunc("/", fs.filerHandler)
go func() {
connected := true
fs.masterNodes = storage.NewMasterNodes(fs.master)
glog.V(0).Infof("Filer server bootstraps with master %s", fs.getMasterNode())
//force initialize with all available master nodes
for {
_, err := fs.masterNodes.FindMaster()
if err != nil {
glog.Infof("filer server failed to get master cluster info:%s", err.Error())
time.Sleep(3 * time.Second)
} else {
break
}
}
for {
glog.V(4).Infof("Filer server sending to master %s", fs.getMasterNode())
master, err := fs.detectHealthyMaster(fs.getMasterNode())
if err == nil {
if !connected {
connected = true
if fs.getMasterNode() != master {
fs.setMasterNode(master)
}
glog.V(0).Infoln("Filer Server Connected with master at", master)
}
} else {
glog.V(1).Infof("Filer Server Failed to talk with master %s: %v", fs.getMasterNode(), err)
if connected {
connected = false
}
}
if connected {
time.Sleep(time.Duration(float32(10*1e3)*(1+rand.Float32())) * time.Millisecond)
} else {
time.Sleep(time.Duration(float32(10*1e3)*0.25) * time.Millisecond)
}
}
}()
return fs, nil
}