org.csource.fastdfs.TrackerClient Maven / Gradle / Ivy
/**
* Copyright (C) 2008 Happy Fish / YuQing
*
* FastDFS Java Client may be copied only under the terms of the GNU Lesser
* General Public License (LGPL).
* Please visit the FastDFS Home Page http://www.csource.org/ for more detail.
*/
package org.csource.fastdfs;
import java.io.IOException;
import java.io.OutputStream;
import java.net.Socket;
import java.util.Arrays;
/**
* Tracker client
* @author Happy Fish / YuQing
* @version Version 1.19
*/
public class TrackerClient {
protected TrackerGroup tracker_group;
protected byte errno;
/**
* constructor with global tracker group
*/
public TrackerClient() {
this.tracker_group = ClientGlobal.g_tracker_group;
}
/**
* constructor with specified tracker group
* @param tracker_group the tracker group object
*/
public TrackerClient(TrackerGroup tracker_group) {
this.tracker_group = tracker_group;
}
/**
* get the error code of last call
* @return the error code of last call
*/
public byte getErrorCode() {
return this.errno;
}
/**
* get a connection to tracker server
* @return tracker server Socket object, return null if fail
*/
public TrackerServer getConnection() throws IOException {
return this.tracker_group.getConnection();
}
/**
* query storage server to upload file
* @param trackerServer the tracker server
* @return storage server Socket object, return null if fail
*/
public StorageServer getStoreStorage(TrackerServer trackerServer) throws IOException {
final String groupName = null;
return this.getStoreStorage(trackerServer, groupName);
}
/**
* query storage server to upload file
* @param trackerServer the tracker server
* @param groupName the group name to upload file to, can be empty
* @return storage server object, return null if fail
*/
public StorageServer getStoreStorage(TrackerServer trackerServer, String groupName) throws IOException {
byte[] header;
String ip_addr;
int port;
byte cmd;
int out_len;
boolean bNewConnection;
byte store_path;
Socket trackerSocket;
if (trackerServer == null) {
trackerServer = getConnection();
if (trackerServer == null) {
return null;
}
bNewConnection = true;
} else {
bNewConnection = false;
}
trackerSocket = trackerServer.getSocket();
OutputStream out = trackerSocket.getOutputStream();
try {
if (groupName == null || groupName.length() == 0) {
cmd = ProtoCommon.TRACKER_PROTO_CMD_SERVICE_QUERY_STORE_WITHOUT_GROUP_ONE;
out_len = 0;
} else {
cmd = ProtoCommon.TRACKER_PROTO_CMD_SERVICE_QUERY_STORE_WITH_GROUP_ONE;
out_len = ProtoCommon.FDFS_GROUP_NAME_MAX_LEN;
}
header = ProtoCommon.packHeader(cmd, out_len, (byte) 0);
out.write(header);
if (groupName != null && groupName.length() > 0) {
byte[] bGroupName;
byte[] bs;
int group_len;
bs = groupName.getBytes(ClientGlobal.g_charset);
bGroupName = new byte[ProtoCommon.FDFS_GROUP_NAME_MAX_LEN];
if (bs.length <= ProtoCommon.FDFS_GROUP_NAME_MAX_LEN) {
group_len = bs.length;
} else {
group_len = ProtoCommon.FDFS_GROUP_NAME_MAX_LEN;
}
Arrays.fill(bGroupName, (byte) 0);
System.arraycopy(bs, 0, bGroupName, 0, group_len);
out.write(bGroupName);
}
ProtoCommon.RecvPackageInfo pkgInfo = ProtoCommon.recvPackage(trackerSocket.getInputStream(),
ProtoCommon.TRACKER_PROTO_CMD_RESP,
ProtoCommon.TRACKER_QUERY_STORAGE_STORE_BODY_LEN);
this.errno = pkgInfo.errno;
if (pkgInfo.errno != 0) {
return null;
}
ip_addr = new String(pkgInfo.body, ProtoCommon.FDFS_GROUP_NAME_MAX_LEN, ProtoCommon.FDFS_IPADDR_SIZE - 1).trim();
port = (int) ProtoCommon.buff2long(pkgInfo.body, ProtoCommon.FDFS_GROUP_NAME_MAX_LEN
+ ProtoCommon.FDFS_IPADDR_SIZE - 1);
store_path = pkgInfo.body[ProtoCommon.TRACKER_QUERY_STORAGE_STORE_BODY_LEN - 1];
return new StorageServer(ip_addr, port, store_path);
} catch (IOException ex) {
if (!bNewConnection) {
try {
trackerServer.close();
} catch (IOException ex1) {
ex1.printStackTrace();
}
}
throw ex;
} finally {
if (bNewConnection) {
try {
trackerServer.close();
} catch (IOException ex1) {
ex1.printStackTrace();
}
}
}
}
/**
* query storage servers to upload file
* @param trackerServer the tracker server
* @param groupName the group name to upload file to, can be empty
* @return storage servers, return null if fail
*/
public StorageServer[] getStoreStorages(TrackerServer trackerServer, String groupName) throws IOException {
byte[] header;
String ip_addr;
int port;
byte cmd;
int out_len;
boolean bNewConnection;
Socket trackerSocket;
if (trackerServer == null) {
trackerServer = getConnection();
if (trackerServer == null) {
return null;
}
bNewConnection = true;
} else {
bNewConnection = false;
}
trackerSocket = trackerServer.getSocket();
OutputStream out = trackerSocket.getOutputStream();
try {
if (groupName == null || groupName.length() == 0) {
cmd = ProtoCommon.TRACKER_PROTO_CMD_SERVICE_QUERY_STORE_WITHOUT_GROUP_ALL;
out_len = 0;
} else {
cmd = ProtoCommon.TRACKER_PROTO_CMD_SERVICE_QUERY_STORE_WITH_GROUP_ALL;
out_len = ProtoCommon.FDFS_GROUP_NAME_MAX_LEN;
}
header = ProtoCommon.packHeader(cmd, out_len, (byte) 0);
out.write(header);
if (groupName != null && groupName.length() > 0) {
byte[] bGroupName;
byte[] bs;
int group_len;
bs = groupName.getBytes(ClientGlobal.g_charset);
bGroupName = new byte[ProtoCommon.FDFS_GROUP_NAME_MAX_LEN];
if (bs.length <= ProtoCommon.FDFS_GROUP_NAME_MAX_LEN) {
group_len = bs.length;
} else {
group_len = ProtoCommon.FDFS_GROUP_NAME_MAX_LEN;
}
Arrays.fill(bGroupName, (byte) 0);
System.arraycopy(bs, 0, bGroupName, 0, group_len);
out.write(bGroupName);
}
ProtoCommon.RecvPackageInfo pkgInfo = ProtoCommon.recvPackage(trackerSocket.getInputStream(),
ProtoCommon.TRACKER_PROTO_CMD_RESP, -1);
this.errno = pkgInfo.errno;
if (pkgInfo.errno != 0) {
return null;
}
if (pkgInfo.body.length < ProtoCommon.TRACKER_QUERY_STORAGE_STORE_BODY_LEN) {
this.errno = ProtoCommon.ERR_NO_EINVAL;
return null;
}
int ipPortLen = pkgInfo.body.length - (ProtoCommon.FDFS_GROUP_NAME_MAX_LEN + 1);
final int recordLength = ProtoCommon.FDFS_IPADDR_SIZE - 1 + ProtoCommon.FDFS_PROTO_PKG_LEN_SIZE;
if (ipPortLen % recordLength != 0) {
this.errno = ProtoCommon.ERR_NO_EINVAL;
return null;
}
int serverCount = ipPortLen / recordLength;
if (serverCount > 16) {
this.errno = ProtoCommon.ERR_NO_ENOSPC;
return null;
}
StorageServer[] results = new StorageServer[serverCount];
byte store_path = pkgInfo.body[pkgInfo.body.length - 1];
int offset = ProtoCommon.FDFS_GROUP_NAME_MAX_LEN;
for (int i = 0; i < serverCount; i++) {
ip_addr = new String(pkgInfo.body, offset, ProtoCommon.FDFS_IPADDR_SIZE - 1).trim();
offset += ProtoCommon.FDFS_IPADDR_SIZE - 1;
port = (int) ProtoCommon.buff2long(pkgInfo.body, offset);
offset += ProtoCommon.FDFS_PROTO_PKG_LEN_SIZE;
results[i] = new StorageServer(ip_addr, port, store_path);
}
return results;
} catch (IOException ex) {
if (!bNewConnection) {
try {
trackerServer.close();
} catch (IOException ex1) {
ex1.printStackTrace();
}
}
throw ex;
} finally {
if (bNewConnection) {
try {
trackerServer.close();
} catch (IOException ex1) {
ex1.printStackTrace();
}
}
}
}
/**
* query storage server to download file
* @param trackerServer the tracker server
* @param groupName the group name of storage server
* @param filename filename on storage server
* @return storage server Socket object, return null if fail
*/
public StorageServer getFetchStorage(TrackerServer trackerServer,
String groupName, String filename) throws IOException {
ServerInfo[] servers = this.getStorages(trackerServer, ProtoCommon.TRACKER_PROTO_CMD_SERVICE_QUERY_FETCH_ONE,
groupName, filename);
if (servers == null) {
return null;
} else {
return new StorageServer(servers[0].getIpAddr(), servers[0].getPort(), 0);
}
}
/**
* query storage server to update file (delete file or set meta data)
* @param trackerServer the tracker server
* @param groupName the group name of storage server
* @param filename filename on storage server
* @return storage server Socket object, return null if fail
*/
public StorageServer getUpdateStorage(TrackerServer trackerServer,
String groupName, String filename) throws IOException {
ServerInfo[] servers = this.getStorages(trackerServer, ProtoCommon.TRACKER_PROTO_CMD_SERVICE_QUERY_UPDATE,
groupName, filename);
if (servers == null) {
return null;
} else {
return new StorageServer(servers[0].getIpAddr(), servers[0].getPort(), 0);
}
}
/**
* get storage servers to download file
* @param trackerServer the tracker server
* @param groupName the group name of storage server
* @param filename filename on storage server
* @return storage servers, return null if fail
*/
public ServerInfo[] getFetchStorages(TrackerServer trackerServer,
String groupName, String filename) throws IOException {
return this.getStorages(trackerServer, ProtoCommon.TRACKER_PROTO_CMD_SERVICE_QUERY_FETCH_ALL,
groupName, filename);
}
/**
* query storage server to download file
* @param trackerServer the tracker server
* @param cmd command code, ProtoCommon.TRACKER_PROTO_CMD_SERVICE_QUERY_FETCH_ONE or
ProtoCommon.TRACKER_PROTO_CMD_SERVICE_QUERY_UPDATE
* @param groupName the group name of storage server
* @param filename filename on storage server
* @return storage server Socket object, return null if fail
*/
protected ServerInfo[] getStorages(TrackerServer trackerServer,
byte cmd, String groupName, String filename) throws IOException {
byte[] header;
byte[] bFileName;
byte[] bGroupName;
byte[] bs;
int len;
String ip_addr;
int port;
boolean bNewConnection;
Socket trackerSocket;
if (trackerServer == null) {
trackerServer = getConnection();
if (trackerServer == null) {
return null;
}
bNewConnection = true;
} else {
bNewConnection = false;
}
trackerSocket = trackerServer.getSocket();
OutputStream out = trackerSocket.getOutputStream();
try {
bs = groupName.getBytes(ClientGlobal.g_charset);
bGroupName = new byte[ProtoCommon.FDFS_GROUP_NAME_MAX_LEN];
bFileName = filename.getBytes(ClientGlobal.g_charset);
if (bs.length <= ProtoCommon.FDFS_GROUP_NAME_MAX_LEN) {
len = bs.length;
} else {
len = ProtoCommon.FDFS_GROUP_NAME_MAX_LEN;
}
Arrays.fill(bGroupName, (byte) 0);
System.arraycopy(bs, 0, bGroupName, 0, len);
header = ProtoCommon.packHeader(cmd, ProtoCommon.FDFS_GROUP_NAME_MAX_LEN + bFileName.length, (byte) 0);
byte[] wholePkg = new byte[header.length + bGroupName.length + bFileName.length];
System.arraycopy(header, 0, wholePkg, 0, header.length);
System.arraycopy(bGroupName, 0, wholePkg, header.length, bGroupName.length);
System.arraycopy(bFileName, 0, wholePkg, header.length + bGroupName.length, bFileName.length);
out.write(wholePkg);
ProtoCommon.RecvPackageInfo pkgInfo = ProtoCommon.recvPackage(trackerSocket.getInputStream(),
ProtoCommon.TRACKER_PROTO_CMD_RESP, -1);
this.errno = pkgInfo.errno;
if (pkgInfo.errno != 0) {
return null;
}
if (pkgInfo.body.length < ProtoCommon.TRACKER_QUERY_STORAGE_FETCH_BODY_LEN) {
throw new IOException("Invalid body length: " + pkgInfo.body.length);
}
if ((pkgInfo.body.length - ProtoCommon.TRACKER_QUERY_STORAGE_FETCH_BODY_LEN) % (ProtoCommon.FDFS_IPADDR_SIZE - 1) != 0) {
throw new IOException("Invalid body length: " + pkgInfo.body.length);
}
int server_count = 1 + (pkgInfo.body.length - ProtoCommon.TRACKER_QUERY_STORAGE_FETCH_BODY_LEN) / (ProtoCommon.FDFS_IPADDR_SIZE - 1);
ip_addr = new String(pkgInfo.body, ProtoCommon.FDFS_GROUP_NAME_MAX_LEN, ProtoCommon.FDFS_IPADDR_SIZE - 1).trim();
int offset = ProtoCommon.FDFS_GROUP_NAME_MAX_LEN + ProtoCommon.FDFS_IPADDR_SIZE - 1;
port = (int) ProtoCommon.buff2long(pkgInfo.body, offset);
offset += ProtoCommon.FDFS_PROTO_PKG_LEN_SIZE;
ServerInfo[] servers = new ServerInfo[server_count];
servers[0] = new ServerInfo(ip_addr, port);
for (int i = 1; i < server_count; i++) {
servers[i] = new ServerInfo(new String(pkgInfo.body, offset, ProtoCommon.FDFS_IPADDR_SIZE - 1).trim(), port);
offset += ProtoCommon.FDFS_IPADDR_SIZE - 1;
}
return servers;
} catch (IOException ex) {
if (!bNewConnection) {
try {
trackerServer.close();
} catch (IOException ex1) {
ex1.printStackTrace();
}
}
throw ex;
} finally {
if (bNewConnection) {
try {
trackerServer.close();
} catch (IOException ex1) {
ex1.printStackTrace();
}
}
}
}
/**
* query storage server to download file
* @param trackerServer the tracker server
* @param file_id the file id(including group name and filename)
* @return storage server Socket object, return null if fail
*/
public StorageServer getFetchStorage1(TrackerServer trackerServer, String file_id) throws IOException {
String[] parts = new String[2];
this.errno = StorageClient1.split_file_id(file_id, parts);
if (this.errno != 0) {
return null;
}
return this.getFetchStorage(trackerServer, parts[0], parts[1]);
}
/**
* get storage servers to download file
* @param trackerServer the tracker server
* @param file_id the file id(including group name and filename)
* @return storage servers, return null if fail
*/
public ServerInfo[] getFetchStorages1(TrackerServer trackerServer, String file_id) throws IOException {
String[] parts = new String[2];
this.errno = StorageClient1.split_file_id(file_id, parts);
if (this.errno != 0) {
return null;
}
return this.getFetchStorages(trackerServer, parts[0], parts[1]);
}
/**
* list groups
* @param trackerServer the tracker server
* @return group stat array, return null if fail
*/
public StructGroupStat[] listGroups(TrackerServer trackerServer) throws IOException {
byte[] header;
String ip_addr;
int port;
byte cmd;
int out_len;
boolean bNewConnection;
byte store_path;
Socket trackerSocket;
if (trackerServer == null) {
trackerServer = getConnection();
if (trackerServer == null) {
return null;
}
bNewConnection = true;
} else {
bNewConnection = false;
}
trackerSocket = trackerServer.getSocket();
OutputStream out = trackerSocket.getOutputStream();
try {
header = ProtoCommon.packHeader(ProtoCommon.TRACKER_PROTO_CMD_SERVER_LIST_GROUP, 0, (byte) 0);
out.write(header);
ProtoCommon.RecvPackageInfo pkgInfo = ProtoCommon.recvPackage(trackerSocket.getInputStream(),
ProtoCommon.TRACKER_PROTO_CMD_RESP, -1);
this.errno = pkgInfo.errno;
if (pkgInfo.errno != 0) {
return null;
}
ProtoStructDecoder decoder = new ProtoStructDecoder();
return decoder.decode(pkgInfo.body, StructGroupStat.class, StructGroupStat.getFieldsTotalSize());
} catch (IOException ex) {
if (!bNewConnection) {
try {
trackerServer.close();
} catch (IOException ex1) {
ex1.printStackTrace();
}
}
throw ex;
} catch (Exception ex) {
ex.printStackTrace();
this.errno = ProtoCommon.ERR_NO_EINVAL;
return null;
} finally {
if (bNewConnection) {
try {
trackerServer.close();
} catch (IOException ex1) {
ex1.printStackTrace();
}
}
}
}
/**
* query storage server stat info of the group
* @param trackerServer the tracker server
* @param groupName the group name of storage server
* @return storage server stat array, return null if fail
*/
public StructStorageStat[] listStorages(TrackerServer trackerServer, String groupName) throws IOException {
final String storageIpAddr = null;
return this.listStorages(trackerServer, groupName, storageIpAddr);
}
/**
* query storage server stat info of the group
* @param trackerServer the tracker server
* @param groupName the group name of storage server
* @param storageIpAddr the storage server ip address, can be null or empty
* @return storage server stat array, return null if fail
*/
public StructStorageStat[] listStorages(TrackerServer trackerServer,
String groupName, String storageIpAddr) throws IOException {
byte[] header;
byte[] bGroupName;
byte[] bs;
int len;
boolean bNewConnection;
Socket trackerSocket;
if (trackerServer == null) {
trackerServer = getConnection();
if (trackerServer == null) {
return null;
}
bNewConnection = true;
} else {
bNewConnection = false;
}
trackerSocket = trackerServer.getSocket();
OutputStream out = trackerSocket.getOutputStream();
try {
bs = groupName.getBytes(ClientGlobal.g_charset);
bGroupName = new byte[ProtoCommon.FDFS_GROUP_NAME_MAX_LEN];
if (bs.length <= ProtoCommon.FDFS_GROUP_NAME_MAX_LEN) {
len = bs.length;
} else {
len = ProtoCommon.FDFS_GROUP_NAME_MAX_LEN;
}
Arrays.fill(bGroupName, (byte) 0);
System.arraycopy(bs, 0, bGroupName, 0, len);
int ipAddrLen;
byte[] bIpAddr;
if (storageIpAddr != null && storageIpAddr.length() > 0) {
bIpAddr = storageIpAddr.getBytes(ClientGlobal.g_charset);
if (bIpAddr.length < ProtoCommon.FDFS_IPADDR_SIZE) {
ipAddrLen = bIpAddr.length;
} else {
ipAddrLen = ProtoCommon.FDFS_IPADDR_SIZE - 1;
}
} else {
bIpAddr = null;
ipAddrLen = 0;
}
header = ProtoCommon.packHeader(ProtoCommon.TRACKER_PROTO_CMD_SERVER_LIST_STORAGE, ProtoCommon.FDFS_GROUP_NAME_MAX_LEN + ipAddrLen, (byte) 0);
byte[] wholePkg = new byte[header.length + bGroupName.length + ipAddrLen];
System.arraycopy(header, 0, wholePkg, 0, header.length);
System.arraycopy(bGroupName, 0, wholePkg, header.length, bGroupName.length);
if (ipAddrLen > 0) {
System.arraycopy(bIpAddr, 0, wholePkg, header.length + bGroupName.length, ipAddrLen);
}
out.write(wholePkg);
ProtoCommon.RecvPackageInfo pkgInfo = ProtoCommon.recvPackage(trackerSocket.getInputStream(),
ProtoCommon.TRACKER_PROTO_CMD_RESP, -1);
this.errno = pkgInfo.errno;
if (pkgInfo.errno != 0) {
return null;
}
ProtoStructDecoder decoder = new ProtoStructDecoder();
return decoder.decode(pkgInfo.body, StructStorageStat.class, StructStorageStat.getFieldsTotalSize());
} catch (IOException ex) {
if (!bNewConnection) {
try {
trackerServer.close();
} catch (IOException ex1) {
ex1.printStackTrace();
}
}
throw ex;
} catch (Exception ex) {
ex.printStackTrace();
this.errno = ProtoCommon.ERR_NO_EINVAL;
return null;
} finally {
if (bNewConnection) {
try {
trackerServer.close();
} catch (IOException ex1) {
ex1.printStackTrace();
}
}
}
}
/**
* delete a storage server from the tracker server
* @param trackerServer the connected tracker server
* @param groupName the group name of storage server
* @param storageIpAddr the storage server ip address
* @return true for success, false for fail
*/
private boolean deleteStorage(TrackerServer trackerServer,
String groupName, String storageIpAddr) throws IOException {
byte[] header;
byte[] bGroupName;
byte[] bs;
int len;
Socket trackerSocket;
trackerSocket = trackerServer.getSocket();
OutputStream out = trackerSocket.getOutputStream();
bs = groupName.getBytes(ClientGlobal.g_charset);
bGroupName = new byte[ProtoCommon.FDFS_GROUP_NAME_MAX_LEN];
if (bs.length <= ProtoCommon.FDFS_GROUP_NAME_MAX_LEN) {
len = bs.length;
} else {
len = ProtoCommon.FDFS_GROUP_NAME_MAX_LEN;
}
Arrays.fill(bGroupName, (byte) 0);
System.arraycopy(bs, 0, bGroupName, 0, len);
int ipAddrLen;
byte[] bIpAddr = storageIpAddr.getBytes(ClientGlobal.g_charset);
if (bIpAddr.length < ProtoCommon.FDFS_IPADDR_SIZE) {
ipAddrLen = bIpAddr.length;
} else {
ipAddrLen = ProtoCommon.FDFS_IPADDR_SIZE - 1;
}
header = ProtoCommon.packHeader(ProtoCommon.TRACKER_PROTO_CMD_SERVER_DELETE_STORAGE, ProtoCommon.FDFS_GROUP_NAME_MAX_LEN + ipAddrLen, (byte) 0);
byte[] wholePkg = new byte[header.length + bGroupName.length + ipAddrLen];
System.arraycopy(header, 0, wholePkg, 0, header.length);
System.arraycopy(bGroupName, 0, wholePkg, header.length, bGroupName.length);
System.arraycopy(bIpAddr, 0, wholePkg, header.length + bGroupName.length, ipAddrLen);
out.write(wholePkg);
ProtoCommon.RecvPackageInfo pkgInfo = ProtoCommon.recvPackage(trackerSocket.getInputStream(),
ProtoCommon.TRACKER_PROTO_CMD_RESP, 0);
this.errno = pkgInfo.errno;
return pkgInfo.errno == 0;
}
/**
* delete a storage server from the global FastDFS cluster
* @param groupName the group name of storage server
* @param storageIpAddr the storage server ip address
* @return true for success, false for fail
*/
public boolean deleteStorage(String groupName, String storageIpAddr) throws IOException {
return this.deleteStorage(ClientGlobal.g_tracker_group, groupName, storageIpAddr);
}
/**
* delete a storage server from the FastDFS cluster
* @param trackerGroup the tracker server group
* @param groupName the group name of storage server
* @param storageIpAddr the storage server ip address
* @return true for success, false for fail
*/
public boolean deleteStorage(TrackerGroup trackerGroup,
String groupName, String storageIpAddr) throws IOException {
int serverIndex;
int notFoundCount;
TrackerServer trackerServer;
notFoundCount = 0;
for (serverIndex = 0; serverIndex < trackerGroup.tracker_servers.length; serverIndex++) {
try {
trackerServer = trackerGroup.getConnection(serverIndex);
} catch (IOException ex) {
ex.printStackTrace(System.err);
this.errno = ProtoCommon.ECONNREFUSED;
return false;
}
try {
StructStorageStat[] storageStats = listStorages(trackerServer, groupName, storageIpAddr);
if (storageStats == null) {
if (this.errno == ProtoCommon.ERR_NO_ENOENT) {
notFoundCount++;
} else {
return false;
}
} else if (storageStats.length == 0) {
notFoundCount++;
} else if (storageStats[0].getStatus() == ProtoCommon.FDFS_STORAGE_STATUS_ONLINE ||
storageStats[0].getStatus() == ProtoCommon.FDFS_STORAGE_STATUS_ACTIVE) {
this.errno = ProtoCommon.ERR_NO_EBUSY;
return false;
}
} finally {
try {
trackerServer.close();
} catch (IOException ex1) {
ex1.printStackTrace();
}
}
}
if (notFoundCount == trackerGroup.tracker_servers.length) {
this.errno = ProtoCommon.ERR_NO_ENOENT;
return false;
}
notFoundCount = 0;
for (serverIndex = 0; serverIndex < trackerGroup.tracker_servers.length; serverIndex++) {
try {
trackerServer = trackerGroup.getConnection(serverIndex);
} catch (IOException ex) {
System.err.println("connect to server " + trackerGroup.tracker_servers[serverIndex].getAddress().getHostAddress() + ":" + trackerGroup.tracker_servers[serverIndex].getPort() + " fail");
ex.printStackTrace(System.err);
this.errno = ProtoCommon.ECONNREFUSED;
return false;
}
try {
if (!this.deleteStorage(trackerServer, groupName, storageIpAddr)) {
if (this.errno != 0) {
if (this.errno == ProtoCommon.ERR_NO_ENOENT) {
notFoundCount++;
} else if (this.errno != ProtoCommon.ERR_NO_EALREADY) {
return false;
}
}
}
} finally {
try {
trackerServer.close();
} catch (IOException ex1) {
ex1.printStackTrace();
}
}
}
if (notFoundCount == trackerGroup.tracker_servers.length) {
this.errno = ProtoCommon.ERR_NO_ENOENT;
return false;
}
if (this.errno == ProtoCommon.ERR_NO_ENOENT) {
this.errno = 0;
}
return this.errno == 0;
}
}