/// <summary>
/// Gets a new client to the attached document store, safe for use by a single-thread.
/// </summary>
/// <returns></returns>
public static IAttachedDocumentStore GetClient()
{
// always construct a new instance of each object here, so we don't have to worry about thread-safety
var ftpSettings = new AttachedDocumentSettings();
var ftp = new FtpFileTransfer(
ftpSettings.FtpUserId,
ftpSettings.FtpPassword,
ftpSettings.FtpBaseUrl,
ftpSettings.FtpPassiveMode);
return new FtpAttachedDocumentStore(ftp, Path.GetTempPath());
}
/// <summary>
/// Downloads a document at a specified relativeUrl to a temporary file.
/// </summary>
/// <param name="documentSummary"></param>
/// <returns>The location of the downloaded file.</returns>
public static string DownloadFile(AttachedDocumentSummary documentSummary)
{
Platform.CheckForNullReference(documentSummary, "documentSummary");
// if already cached locally, return local file name
var tempFile = TempFileManager.Instance.GetFile(documentSummary.DocumentRef);
if (!string.IsNullOrEmpty(tempFile))
return tempFile;
var ftpFileTransfer = new FtpFileTransfer(
AttachedDocumentSettings.Default.FtpUserId,
AttachedDocumentSettings.Default.FtpPassword,
AttachedDocumentSettings.Default.FtpBaseUrl,
AttachedDocumentSettings.Default.FtpPassiveMode);
var fullUrl = new Uri(ftpFileTransfer.BaseUri, documentSummary.ContentUrl);
var fileExtension = Path.GetExtension(fullUrl.LocalPath).Trim('.');
var localFilePath = TempFileManager.Instance.CreateFile(documentSummary.DocumentRef, fileExtension,
fn => ftpFileTransfer.Download(new FileTransferRequest(fullUrl, fn)),
TimeSpan.FromSeconds(AttachedDocumentSettings.Default.DownloadCacheTimeToLive));
return localFilePath;
}
/// <summary>
/// Constructor.
/// </summary>
/// <param name="ftpFileTransfer">FTP file transfer object.</param>
/// <param name="tempPath">A path that can be used to store downloaded document files.</param>
public FtpAttachedDocumentStore(FtpFileTransfer ftpFileTransfer, string tempPath)
{
_ftpFileTransfer = ftpFileTransfer;
_tempPath = tempPath;
}
