org.csource.fastdfs

类 TrackerClient

java.lang.Object

org.csource.fastdfs.TrackerClient

public class TrackerClient
extends java.lang.Object

Tracker client

版本:

Version 1.19

作者:

Happy Fish / YuQing

字段概要

字段

限定符和类型	字段和说明
protected byte	errno
protected TrackerGroup	tracker_group

构造器概要

构造器

构造器和说明
TrackerClient() constructor with global tracker group
TrackerClient(TrackerGroup tracker_group) constructor with specified tracker group

方法概要

限定符和类型	方法和说明
boolean	deleteStorage(java.lang.String groupName, java.lang.String storageIpAddr) delete a storage server from the global FastDFS cluster
boolean	deleteStorage(TrackerGroup trackerGroup, java.lang.String groupName, java.lang.String storageIpAddr) delete a storage server from the FastDFS cluster
TrackerServer	getConnection() get a connection to tracker server
byte	getErrorCode() get the error code of last call
StorageServer	getFetchStorage(TrackerServer trackerServer, java.lang.String groupName, java.lang.String filename) query storage server to download file
StorageServer	getFetchStorage1(TrackerServer trackerServer, java.lang.String file_id) query storage server to download file
ServerInfo[]	getFetchStorages(TrackerServer trackerServer, java.lang.String groupName, java.lang.String filename) get storage servers to download file
ServerInfo[]	getFetchStorages1(TrackerServer trackerServer, java.lang.String file_id) get storage servers to download file
protected ServerInfo[]	getStorages(TrackerServer trackerServer, byte cmd, java.lang.String groupName, java.lang.String filename) query storage server to download file
StorageServer	getStoreStorage(TrackerServer trackerServer) query storage server to upload file
StorageServer	getStoreStorage(TrackerServer trackerServer, java.lang.String groupName) query storage server to upload file
StorageServer[]	getStoreStorages(TrackerServer trackerServer, java.lang.String groupName) query storage servers to upload file
StorageServer	getUpdateStorage(TrackerServer trackerServer, java.lang.String groupName, java.lang.String filename) query storage server to update file (delete file or set meta data)
StructGroupStat[]	listGroups(TrackerServer trackerServer) list groups
StructStorageStat[]	listStorages(TrackerServer trackerServer, java.lang.String groupName) query storage server stat info of the group
StructStorageStat[]	listStorages(TrackerServer trackerServer, java.lang.String groupName, java.lang.String storageIpAddr) query storage server stat info of the group

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

字段详细资料

tracker_group

protected TrackerGroup tracker_group

errno

protected byte errno

构造器详细资料

TrackerClient

public TrackerClient()

constructor with global tracker group

TrackerClient

public TrackerClient(TrackerGroup tracker_group)

constructor with specified tracker group

参数:

tracker_group - the tracker group object

方法详细资料

getErrorCode

public byte getErrorCode()

get the error code of last call

返回:

the error code of last call

getConnection

public TrackerServer getConnection()
                            throws java.io.IOException

get a connection to tracker server

返回:

tracker server Socket object, return null if fail

抛出:

java.io.IOException

getStoreStorage

public StorageServer getStoreStorage(TrackerServer trackerServer)
                              throws java.io.IOException

query storage server to upload file

参数:

trackerServer - the tracker server

返回:

storage server Socket object, return null if fail

抛出:

java.io.IOException

getStoreStorage

public StorageServer getStoreStorage(TrackerServer trackerServer,
                                     java.lang.String groupName)
                              throws java.io.IOException

query storage server to upload file

参数:

trackerServer - the tracker server

groupName - the group name to upload file to, can be empty

返回:

storage server object, return null if fail

抛出:

java.io.IOException

getStoreStorages

public StorageServer[] getStoreStorages(TrackerServer trackerServer,
                                        java.lang.String groupName)
                                 throws java.io.IOException

query storage servers to upload file

参数:

trackerServer - the tracker server

groupName - the group name to upload file to, can be empty

返回:

storage servers, return null if fail

抛出:

java.io.IOException

getFetchStorage

public StorageServer getFetchStorage(TrackerServer trackerServer,
                                     java.lang.String groupName,
                                     java.lang.String filename)
                              throws java.io.IOException

query storage server to download file

参数:

trackerServer - the tracker server

groupName - the group name of storage server

filename - filename on storage server

返回:

storage server Socket object, return null if fail

抛出:

java.io.IOException

getUpdateStorage

public StorageServer getUpdateStorage(TrackerServer trackerServer,
                                      java.lang.String groupName,
                                      java.lang.String filename)
                               throws java.io.IOException

query storage server to update file (delete file or set meta data)

参数:

trackerServer - the tracker server

groupName - the group name of storage server

filename - filename on storage server

返回:

storage server Socket object, return null if fail

抛出:

java.io.IOException

getFetchStorages

public ServerInfo[] getFetchStorages(TrackerServer trackerServer,
                                     java.lang.String groupName,
                                     java.lang.String filename)
                              throws java.io.IOException

get storage servers to download file

参数:

trackerServer - the tracker server

groupName - the group name of storage server

filename - filename on storage server

返回:

storage servers, return null if fail

抛出:

java.io.IOException

getStorages

protected ServerInfo[] getStorages(TrackerServer trackerServer,
                                   byte cmd,
                                   java.lang.String groupName,
                                   java.lang.String filename)
                            throws java.io.IOException

query storage server to download file

参数:

trackerServer - the tracker server

cmd - command code, ProtoCommon.TRACKER_PROTO_CMD_SERVICE_QUERY_FETCH_ONE or ProtoCommon.TRACKER_PROTO_CMD_SERVICE_QUERY_UPDATE

groupName - the group name of storage server

filename - filename on storage server

返回:

storage server Socket object, return null if fail

抛出:

java.io.IOException

getFetchStorage1

public StorageServer getFetchStorage1(TrackerServer trackerServer,
                                      java.lang.String file_id)
                               throws java.io.IOException

query storage server to download file

参数:

trackerServer - the tracker server

file_id - the file id(including group name and filename)

返回:

storage server Socket object, return null if fail

抛出:

java.io.IOException

getFetchStorages1

public ServerInfo[] getFetchStorages1(TrackerServer trackerServer,
                                      java.lang.String file_id)
                               throws java.io.IOException

get storage servers to download file

参数:

trackerServer - the tracker server

file_id - the file id(including group name and filename)

返回:

storage servers, return null if fail

抛出:

java.io.IOException

listGroups

public StructGroupStat[] listGroups(TrackerServer trackerServer)
                             throws java.io.IOException

list groups

参数:

trackerServer - the tracker server

返回:

group stat array, return null if fail

抛出:

java.io.IOException

listStorages

public StructStorageStat[] listStorages(TrackerServer trackerServer,
                                        java.lang.String groupName)
                                 throws java.io.IOException

query storage server stat info of the group

参数:

trackerServer - the tracker server

groupName - the group name of storage server

返回:

storage server stat array, return null if fail

抛出:

java.io.IOException

listStorages

public StructStorageStat[] listStorages(TrackerServer trackerServer,
                                        java.lang.String groupName,
                                        java.lang.String storageIpAddr)
                                 throws java.io.IOException

query storage server stat info of the group

参数:

trackerServer - the tracker server

groupName - the group name of storage server

storageIpAddr - the storage server ip address, can be null or empty

返回:

storage server stat array, return null if fail

抛出:

java.io.IOException

deleteStorage

public boolean deleteStorage(java.lang.String groupName,
                             java.lang.String storageIpAddr)
                      throws java.io.IOException

delete a storage server from the global FastDFS cluster

参数:

groupName - the group name of storage server

storageIpAddr - the storage server ip address

返回:

true for success, false for fail

抛出:

java.io.IOException

deleteStorage

public boolean deleteStorage(TrackerGroup trackerGroup,
                             java.lang.String groupName,
                             java.lang.String storageIpAddr)
                      throws java.io.IOException

delete a storage server from the FastDFS cluster

参数:

trackerGroup - the tracker server group

groupName - the group name of storage server

storageIpAddr - the storage server ip address

返回:

true for success, false for fail

抛出:

java.io.IOException