/** * 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 bool deleteStorage(TrackerServer trackerServer, String groupName, String storageIpAddr) { byte[] header; byte[] bGroupName; byte[] bs; int len; Socket trackerSocket; trackerSocket = trackerServer.getSocket(); using (var outputStream = new NetworkStream(trackerSocket)) { bs = _encoding.GetBytes(groupName); 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; } bGroupName.Fill <byte>(0); Array.Copy(bs, 0, bGroupName, 0, len); int ipAddrLen; byte[] bIpAddr = _encoding.GetBytes(storageIpAddr); 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]; Array.Copy(header, 0, wholePkg, 0, header.Length); Array.Copy(bGroupName, 0, wholePkg, header.Length, bGroupName.Length); Array.Copy(bIpAddr, 0, wholePkg, header.Length + bGroupName.Length, ipAddrLen); outputStream.Write(wholePkg, 0, wholePkg.Length); ProtoCommon.RecvPackageInfo pkgInfo = ProtoCommon.recvPackage(outputStream, ProtoCommon.TRACKER_PROTO_CMD_RESP, 0); this.errno = pkgInfo.errno; return(pkgInfo.errno == 0); } }
/** * 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) { byte[] header; String ip_addr; int port; byte cmd; int out_len; bool bNewConnection; byte store_path; Socket trackerSocket; if (trackerServer == null) { trackerServer = getConnection(); if (trackerServer == null) { return(null); } bNewConnection = true; } else { bNewConnection = false; } trackerSocket = trackerServer.getSocket(); var outputStream = new NetworkStream(trackerSocket); 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); outputStream.Write(header, 0, header.Length); var encoder = Encoding.GetEncoding(ClientGlobal.g_charset); if (groupName != null && groupName.Length > 0) { byte[] bGroupName; byte[] bs; int group_len; bs = encoder.GetBytes(groupName); 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; } bGroupName.Fill <byte>(0); Array.Copy(bs, 0, bGroupName, 0, group_len); outputStream.Write(bGroupName, 0, bGroupName.Length); } ProtoCommon.RecvPackageInfo pkgInfo = ProtoCommon.recvPackage(outputStream, ProtoCommon.TRACKER_PROTO_CMD_RESP, ProtoCommon.TRACKER_QUERY_STORAGE_STORE_BODY_LEN); this.errno = pkgInfo.errno; if (pkgInfo.errno != 0) { return(null); } ip_addr = Encoding.ASCII.GetString(pkgInfo.body, ProtoCommon.FDFS_GROUP_NAME_MAX_LEN, ProtoCommon.FDFS_IPADDR_SIZE - 1).Trim('\0'); 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) { } } throw ex; } finally { outputStream.Close(); if (bNewConnection) { try { trackerServer.close(); } catch (IOException ex1) { } } } }
/** * 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) { byte[] header; byte[] bGroupName; byte[] bs; int len; bool bNewConnection; Socket trackerSocket; if (trackerServer == null) { trackerServer = getConnection(); if (trackerServer == null) { return(null); } bNewConnection = true; } else { bNewConnection = false; } trackerSocket = trackerServer.getSocket(); var outputStream = new NetworkStream(trackerSocket); try { bs = _encoding.GetBytes(groupName); 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; } bGroupName.Fill <byte>(0); Array.Copy(bs, 0, bGroupName, 0, len); int ipAddrLen; byte[] bIpAddr; if (storageIpAddr != null && storageIpAddr.Length > 0) { bIpAddr = _encoding.GetBytes(storageIpAddr); 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]; Array.Copy(header, 0, wholePkg, 0, header.Length); Array.Copy(bGroupName, 0, wholePkg, header.Length, bGroupName.Length); if (ipAddrLen > 0) { Array.Copy(bIpAddr, 0, wholePkg, header.Length + bGroupName.Length, ipAddrLen); } outputStream.Write(wholePkg, 0, wholePkg.Length); ProtoCommon.RecvPackageInfo pkgInfo = ProtoCommon.recvPackage(outputStream, ProtoCommon.TRACKER_PROTO_CMD_RESP, -1); this.errno = pkgInfo.errno; if (pkgInfo.errno != 0) { return(null); } ProtoStructDecoder <StructStorageStat> decoder = new ProtoStructDecoder <StructStorageStat>(); return(decoder.decode <StructStorageStat>(pkgInfo.body, StructStorageStat.getFieldsTotalSize())); } catch (IOException ex) { if (!bNewConnection) { try { trackerServer.close(); } catch (IOException ex1) { } } throw ex; } catch (Exception ex) { this.errno = ProtoCommon.ERR_NO_EINVAL; return(null); } finally { outputStream.Close(); if (bNewConnection) { try { trackerServer.close(); } catch (IOException ex1) { } } } }
/** * list groups * * @param trackerServer the tracker server * @return group stat array, return null if fail */ public StructGroupStat[] listGroups(TrackerServer trackerServer) { byte[] header; String ip_addr; int port; byte cmd; int out_len; bool bNewConnection; byte store_path; Socket trackerSocket; if (trackerServer == null) { trackerServer = getConnection(); if (trackerServer == null) { return(null); } bNewConnection = true; } else { bNewConnection = false; } trackerSocket = trackerServer.getSocket(); var outputStream = new NetworkStream(trackerSocket); try { header = ProtoCommon.packHeader(ProtoCommon.TRACKER_PROTO_CMD_SERVER_LIST_GROUP, 0, (byte)0); outputStream.Write(header, 0, header.Length); ProtoCommon.RecvPackageInfo pkgInfo = ProtoCommon.recvPackage(outputStream, ProtoCommon.TRACKER_PROTO_CMD_RESP, -1); this.errno = pkgInfo.errno; if (pkgInfo.errno != 0) { return(null); } ProtoStructDecoder <StructGroupStat> decoder = new ProtoStructDecoder <StructGroupStat>(); return(decoder.decode <StructGroupStat>(pkgInfo.body, StructGroupStat.getFieldsTotalSize())); } catch (IOException ex) { if (!bNewConnection) { try { trackerServer.close(); } catch (IOException ex1) { } } throw ex; } catch (Exception ex) { this.errno = ProtoCommon.ERR_NO_EINVAL; return(null); } finally { outputStream.Close(); if (bNewConnection) { try { trackerServer.close(); } catch (IOException ex1) { } } } }
/** * 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) { byte[] header; byte[] bFileName; byte[] bGroupName; byte[] bs; int len; String ip_addr; int port; bool bNewConnection; Socket trackerSocket; if (trackerServer == null) { trackerServer = getConnection(); if (trackerServer == null) { return(null); } bNewConnection = true; } else { bNewConnection = false; } trackerSocket = trackerServer.getSocket(); var outputStream = new NetworkStream(trackerSocket); try { bs = _encoding.GetBytes(groupName); bGroupName = new byte[ProtoCommon.FDFS_GROUP_NAME_MAX_LEN]; bFileName = _encoding.GetBytes(filename); if (bs.Length <= ProtoCommon.FDFS_GROUP_NAME_MAX_LEN) { len = bs.Length; } else { len = ProtoCommon.FDFS_GROUP_NAME_MAX_LEN; } bGroupName.Fill <byte>(0); Array.Copy(bs, 0, bGroupName, 0, len); header = ProtoCommon.packHeader(cmd, ProtoCommon.FDFS_GROUP_NAME_MAX_LEN + bFileName.Length, 0); byte[] wholePkg = new byte[header.Length + bGroupName.Length + bFileName.Length]; Array.Copy(header, 0, wholePkg, 0, header.Length); Array.Copy(bGroupName, 0, wholePkg, header.Length, bGroupName.Length); Array.Copy(bFileName, 0, wholePkg, header.Length + bGroupName.Length, bFileName.Length); outputStream.Write(wholePkg, 0, wholePkg.Length); ProtoCommon.RecvPackageInfo pkgInfo = ProtoCommon.recvPackage(outputStream, 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 = Encoding.ASCII.GetString(pkgInfo.body, ProtoCommon.FDFS_GROUP_NAME_MAX_LEN, ProtoCommon.FDFS_IPADDR_SIZE - 1).Trim('\0'); 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(Encoding.ASCII.GetString( pkgInfo.body, offset, ProtoCommon.FDFS_IPADDR_SIZE - 1).Trim('\0'), port); offset += ProtoCommon.FDFS_IPADDR_SIZE - 1; } return(servers); } catch (IOException ex) { if (!bNewConnection) { try { trackerServer.close(); } catch (IOException ex1) { } } throw ex; } finally { outputStream.Close(); if (bNewConnection) { try { trackerServer.close(); } catch (IOException ex1) { } } } }
/** * 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) { byte[] header; String ip_addr; int port; byte cmd; int out_len; bool bNewConnection; Socket trackerSocket; if (trackerServer == null) { trackerServer = getConnection(); if (trackerServer == null) { return(null); } bNewConnection = true; } else { bNewConnection = false; } trackerSocket = trackerServer.getSocket(); var outputStream = new NetworkStream(trackerSocket); 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); outputStream.Write(header, 0, header.Length); var encoder = Encoding.GetEncoding(ClientGlobal.g_charset); if (groupName != null && groupName.Length > 0) { byte[] bGroupName; byte[] bs; int group_len; bs = encoder.GetBytes(groupName); 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; } bGroupName.Fill <byte>(0); Array.Copy(bs, 0, bGroupName, 0, group_len); outputStream.Write(bGroupName, 0, bGroupName.Length); } ProtoCommon.RecvPackageInfo pkgInfo = ProtoCommon.recvPackage(outputStream, 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); 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 = Encoding.ASCII.GetString(pkgInfo.body, offset, ProtoCommon.FDFS_IPADDR_SIZE - 1).Trim( '\0'); 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) { } } throw ex; } finally { outputStream.Close(); if (bNewConnection) { try { trackerServer.close(); } catch (IOException ex1) { } } } }