public FtpInboundData TryCreateJobData(FtpDownloadMetadata item, out bool jobAlreadyExisted)
{
FtpInboundData returnValue;
if (item.Settings.IgnoreDuplicates)
{
using (var transaction = new TransactionScope(TransactionScopeOption.Required, new TransactionOptions { IsolationLevel = IsolationLevel.Serializable }))
{
returnValue = _documentSession.Query<FtpInboundData>()
.Customize(i => i.WaitForNonStaleResultsAsOfLastWrite(TimeSpan.FromSeconds(120)))
.SingleOrDefault(i => i.Directory == item.Directory && i.FileName == item.FileName);
if (returnValue == null)
{
returnValue = new FtpInboundData
{
Directory = item.Directory,
FileName = item.FileName,
QueuedDateTimeUtc = DateTime.UtcNow,
InboundQueueIdentifier = item.Settings.InboundQueueIdentifier,
AttachmentId = this.DownloadFile(item)
};
jobAlreadyExisted = false;
_documentSession.Store(returnValue);
_documentSession.SaveChanges();
transaction.Complete();
}
else
{
jobAlreadyExisted = true;
}
}
}
else
{
returnValue = new FtpInboundData
{
Directory = item.Directory,
FileName = item.FileName,
QueuedDateTimeUtc = DateTime.UtcNow,
InboundQueueIdentifier = item.Settings.InboundQueueIdentifier,
AttachmentId = this.DownloadFile(item)
};
jobAlreadyExisted = false;
_documentSession.Store(returnValue);
_documentSession.SaveChanges();
}
return returnValue;
}
public List<FtpDownloadMetadata> GetAvailableDownloadList(FtpDownloadSettings ftpDownloadSettings)
{
var returnList = new List<FtpDownloadMetadata>();
List<string> patternList = ftpDownloadSettings.FilePatternList;
if(patternList == null || patternList.Count == 0)
{
patternList.Add("*.*");
}
foreach(string pattern in patternList)
{
var list = _ftpCommunicator.GetFileList(ftpDownloadSettings.SettingSource, ftpDownloadSettings.SettingKey, ftpDownloadSettings.DownloadDirectory, pattern);
if(list != null && list.Count > 0)
{
foreach(string fileName in list)
{
var newItem = new FtpDownloadMetadata
{
Directory = ftpDownloadSettings.DownloadDirectory,
FileName = fileName,
Settings = ftpDownloadSettings
};
returnList.Add(newItem);
}
}
}
return returnList;
}
public string DownloadFile(FtpDownloadMetadata item)
{
string ftpFilePath;
if (!string.IsNullOrEmpty(item.Directory))
{
if(item.Directory.EndsWith("/"))
{
ftpFilePath = item.Directory + item.FileName;
}
else
{
ftpFilePath = item.Directory + "/" + item.FileName;
}
}
else
{
ftpFilePath = item.FileName;
}
string tempDirectory = Path.Combine(Path.GetTempPath(), "MMDB.DataService");
if (!Directory.Exists(tempDirectory))
{
Directory.CreateDirectory(tempDirectory);
}
string tempPath = Path.Combine(tempDirectory, Guid.NewGuid().ToString() + "." + item.FileName);
try
{
_ftpCommunicator.DownloadFile(item.Settings.SettingSource, item.Settings.SettingKey, ftpFilePath, tempPath);
string attachmentID = Guid.NewGuid().ToString();
using(FileStream stream = new FileStream(tempPath, FileMode.Open))
{
_ravenManager.SetAttachment(attachmentID, stream);
}
return attachmentID;
}
finally
{
try
{
if (File.Exists(tempPath))
{
File.Delete(tempPath);
tempPath = null;
}
}
catch { }
}
}