private ReplicationMasterFile(ReplicationMasterStorageImpl storage, IFile file, string localhost, int port, string[] hosts, bool ack, String pageTimestampFilePath)
{
this.storage = storage;
this.file = file;
this.ack = ack;
this.localhost = localhost;
this.port = port;
mutex = new object();
replicas = new Replica[hosts.Length];
rcBuf = new byte[1];
nHosts = 0;
if (pageTimestampFilePath != null) {
FileParameters fileParameters = storage != null ? storage.fileParameters : new FileParameters(false, false, false, 1024*1024);
pageTimestampFile = new OSFile(pageTimestampFilePath, fileParameters);
long fileLength = pageTimestampFile.Length;
if (fileLength == 0) {
pageTimestamps = new int[InitPageTimestampsLength];
} else {
pageTimestamps = new int[(int)(fileLength/4)];
byte[] page = new byte[Page.pageSize];
int i = 0;
for (long pos = 0; pos < fileLength; pos += Page.pageSize) {
int rc = pageTimestampFile.Read(pos, page);
for (int offs = 0; offs < rc; offs += 4, i++) {
pageTimestamps[i] = Bytes.unpack4(page, offs);
if (pageTimestamps[i] > timestamp) {
timestamp = pageTimestamps[i];
}
}
}
if (i != pageTimestamps.Length) {
throw new StorageError(StorageError.ErrorCode.FILE_ACCESS_ERROR);
}
}
dirtyPageTimestampMap = new int[(((pageTimestamps.Length*4 + Page.pageSize - 1) >> Page.pageSizeLog) + 31) >> 5];
txBuf = new byte[12 + Page.pageSize];
} else {
txBuf = new byte[8 + Page.pageSize];
}
for (int i = 0; i < hosts.Length; i++)
{
replicas[i] = new Replica();
replicas[i].host = hosts[i];
Connect(i);
}
if (port >= 0)
{
storage.SetProperty("perst.alternative.btree", true); // prevent direct modification of pages
listenSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
listenSocket.Bind(new IPEndPoint(localhost != null && localhost != "localhost" ? IPAddress.Parse(localhost) : IPAddress.Any, port));
listenSocket.Listen(ListenQueueSize);
listening = true;
listenThread = new Thread(new ThreadStart(run));
listenThread.Start();
}
watchdogThread = new Thread(new ThreadStart(watchdog));
watchdogThread.Start();
}
/// <summary>
/// Constructor of replication master file
/// <param name="storage">replication storage</param>
/// <param name="file">local file used to store data locally</param>
/// <param name="asyncBufSize">size of asynchronous buffer</param>
/// <param name="pageTimestampFile">path to the file with pages timestamps. This file is used for synchronizing
/// with master content of newly attached node</param>
/// </summary>
public AsyncReplicationMasterFile(ReplicationMasterStorageImpl storage, IFile file, int asyncBufSize, String pageTimestampFile)
: base(storage, file, pageTimestampFile)
{
this.asyncBufSize = asyncBufSize;
start();
}
/// <summary>
/// Constructor of replication master file
/// <param name="storage">replication storage</param>
/// <param name="file">local file used to store data locally</param>
/// <param name="asyncBufSize">size of asynchronous buffer</param>
/// <param name="pageTimestampFile">path to the file with pages timestamps. This file is used for synchronizing
/// with master content of newly attached node</param>
/// </summary>
public AsyncReplicationMasterFile(ReplicationMasterStorageImpl storage, IFile file, int asyncBufSize, String pageTimestampFile)
: base(storage, file, pageTimestampFile)
{
this.asyncBufSize = asyncBufSize;
start();
}
/// <summary>
/// Constructor of replication master file
/// </summary>
/// <param name="storage">replication storage</param>
/// <param name="file">local file used to store data locally</param>
/// <param name="pageTimestampFile">path to the file with pages timestamps. This file is used for synchronizing
/// with master content of newly attached node</param>
public ReplicationMasterFile(ReplicationMasterStorageImpl storage, IFile file, String pageTimestampFile)
: this(storage, file, storage.localhost, storage.port, storage.hosts, storage.replicationAck, pageTimestampFile)
{
}
private ReplicationMasterFile(ReplicationMasterStorageImpl storage, IFile file, string localhost, int port, string[] hosts, bool ack, String pageTimestampFilePath)
{
this.storage = storage;
this.file = file;
this.ack = ack;
this.localhost = localhost;
this.port = port;
mutex = new object();
replicas = new Replica[hosts.Length];
rcBuf = new byte[1];
nHosts = 0;
if (pageTimestampFilePath != null)
{
FileParameters fileParameters = storage != null ? storage.fileParameters : new FileParameters(false, false, false, 1024 * 1024);
pageTimestampFile = new OSFile(pageTimestampFilePath, fileParameters);
long fileLength = pageTimestampFile.Length;
if (fileLength == 0)
{
pageTimestamps = new int[InitPageTimestampsLength];
}
else
{
pageTimestamps = new int[(int)(fileLength / 4)];
byte[] page = new byte[Page.pageSize];
int i = 0;
for (long pos = 0; pos < fileLength; pos += Page.pageSize)
{
int rc = pageTimestampFile.Read(pos, page);
for (int offs = 0; offs < rc; offs += 4, i++)
{
pageTimestamps[i] = Bytes.unpack4(page, offs);
if (pageTimestamps[i] > timestamp)
{
timestamp = pageTimestamps[i];
}
}
}
if (i != pageTimestamps.Length)
{
throw new StorageError(StorageError.ErrorCode.FILE_ACCESS_ERROR);
}
}
dirtyPageTimestampMap = new int[(((pageTimestamps.Length * 4 + Page.pageSize - 1) >> Page.pageSizeLog) + 31) >> 5];
txBuf = new byte[12 + Page.pageSize];
}
else
{
txBuf = new byte[8 + Page.pageSize];
}
for (int i = 0; i < hosts.Length; i++)
{
replicas[i] = new Replica();
replicas[i].host = hosts[i];
Connect(i);
}
if (port >= 0)
{
storage.SetProperty("perst.alternative.btree", true); // prevent direct modification of pages
listenSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
listenSocket.Bind(new IPEndPoint(localhost != null && localhost != "localhost" ? IPAddress.Parse(localhost) : IPAddress.Any, port));
listenSocket.Listen(ListenQueueSize);
listening = true;
listenThread = new Thread(new ThreadStart(run));
listenThread.Start();
}
watchdogThread = new Thread(new ThreadStart(watchdog));
watchdogThread.Start();
}
/// <summary>
/// Constructor of replication master file
/// </summary>
/// <param name="storage">replication storage</param>
/// <param name="file">local file used to store data locally</param>
/// <param name="pageTimestampFile">path to the file with pages timestamps. This file is used for synchronizing
/// with master content of newly attached node</param>
public ReplicationMasterFile(ReplicationMasterStorageImpl storage, IFile file, String pageTimestampFile)
: this(storage, file, storage.localhost, storage.port, storage.hosts, storage.replicationAck, pageTimestampFile)
{
}
