/// <summary>
/// Replicates the <see cref="TVA.Historian.IArchive"/>.
/// </summary>
protected override void ReplicateArchive()
{
WriteTrace("Archive replication started");
// Parse FTP client information.
Uri replicaUri = new Uri(ReplicaLocation);
string[] credentials = replicaUri.UserInfo.Split(':');
// Ensure credentials are supplied.
if (credentials.Length != 2)
throw new ArgumentException("FTP credentials are missing in ReplicaLocation.");
// Create FTP client for uploading.
FtpClient ftpClient = new FtpClient();
ftpClient.Server = replicaUri.Host;
ftpClient.Port = replicaUri.Port;
ftpClient.FileTransferProgress += FtpClient_FileTransferProgress;
// Initialize the replication log.
WriteTrace("Initializing archive replication log");
DataTable replicationLog = new DataTable("ReplicationRecord");
replicationLog.Columns.Add("DateTime");
replicationLog.Columns.Add("FileName");
replicationLog.Columns.Add("FileHash");
replicationLog.Columns.Add("FileSync");
replicationLog.Columns.Add("HashingTime");
replicationLog.Columns.Add("TransferTime");
replicationLog.Columns.Add("TransferRate");
replicationLog.Columns.Add("ServerRequests");
replicationLog.Columns.Add("ServerResponse");
if (File.Exists(FilePath.GetAbsolutePath(ReplicationLogFile)))
replicationLog.ReadXml(FilePath.GetAbsolutePath(ReplicationLogFile));
WriteTrace("Archive replication log initialized");
try
{
// Connect FTP client to server.
WriteTrace("Connecting to ftp://{0}:{1}", ftpClient.Server, ftpClient.Port);
ftpClient.Connect(credentials[0], credentials[1]);
WriteTrace("Connection successful");
WriteTrace("Changing current directory to '{0}'", replicaUri.AbsolutePath);
ftpClient.SetCurrentDirectory(replicaUri.LocalPath);
WriteTrace("Current directory changed to '{0}'", ftpClient.CurrentDirectory.FullPath);
// Process all archive location(s).
foreach (string folder in ArchiveLocation.Split(';'))
{
if (!string.IsNullOrEmpty(folder))
ReplicateToHadoop(ftpClient, folder.Trim(), replicationLog);
}
}
finally
{
ftpClient.Dispose();
replicationLog.WriteXml(FilePath.GetAbsolutePath(ReplicationLogFile));
}
WriteTrace("Archive replication complete");
}
/// <summary>
/// Clones FTP session used by file watcher so it can be used for other purposes.
/// </summary>
/// <returns>New connected FTP session matching settings defined for FTP file watcher.</returns>
public virtual FtpClient CloneFtpSession()
{
// This method is just for convenience. We can't allow the end user to use the
// actual internal directory for sending files or other work because it is
// constantly being refreshed/used etc., so we instead create a new FTP Session
// based on the current internal session and watch directory information
FtpClient newSession = new FtpClient(m_session.CaseInsensitive);
newSession.Server = m_session.Server;
newSession.Connect(m_username, m_password);
newSession.SetCurrentDirectory(m_watchDirectory);
return newSession;
}