/**
* 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)
{
}
}
}
}