/// <summary>the basic interface. Take a URI and just get it</summary>
/// <param name="queryUri">the URI to execute</param>
/// <param name="ifModifiedSince">used to set a precondition date that
/// indicates the feed should be returned only if it has been modified
/// after the specified date. A value of DateTime.MinValue indicates no
/// precondition.</param>
/// <param name="etag">used to set a precondition etag that
/// indicates the feed should be returned only if it has been modified </param>
/// <param name="contentLength">returns the content length of the response</param>
/// <returns> a webresponse object</returns>
private Stream Query(Uri queryUri, DateTime ifModifiedSince, string etag, out long contentLength)
{
Tracing.TraceCall("Enter");
if (queryUri == null)
{
throw new System.ArgumentNullException("queryUri");
}
contentLength = -1;
IGDataRequest request = RequestFactory.CreateRequest(GDataRequestType.Query, queryUri);
request.Credentials = Credentials;
request.IfModifiedSince = ifModifiedSince;
if (etag != null)
{
ISupportsEtag ise = request as ISupportsEtag;
if (ise != null)
{
ise.Etag = etag;
}
}
try
{
request.Execute();
}
catch (Exception)
{
// Prevent connection leaks
if (request.GetResponseStream() != null)
{
request.GetResponseStream().Close();
}
throw;
}
// return the response
GDataGAuthRequest gr = request as GDataGAuthRequest;
if (gr != null)
{
contentLength = gr.ContentLength;
}
Tracing.TraceCall("Exit");
return(new GDataReturnStream(request));
}
/// <summary>Inserts an AtomBase entry against a Uri</summary>
/// <param name="feedUri">the uri for the feed this object should be posted against</param>
/// <param name="baseEntry">the entry to be inserted</param>
/// <param name="type">the type of request to create</param>
/// <param name="data">the async data payload</param>
/// <returns> the response as a stream</returns>
internal virtual Stream EntrySend(Uri feedUri, AtomBase baseEntry, GDataRequestType type, AsyncSendData data)
{
Tracing.Assert(feedUri != null, "feedUri should not be null");
if (feedUri == null)
{
throw new ArgumentNullException("feedUri");
}
Tracing.Assert(baseEntry != null, "baseEntry should not be null");
if (baseEntry == null)
{
throw new ArgumentNullException("baseEntry");
}
_versionInfo.ImprintVersion(baseEntry);
IGDataRequest request = RequestFactory.CreateRequest(type, feedUri);
request.Credentials = Credentials;
ISupportsEtag eTarget = request as ISupportsEtag;
ISupportsEtag eSource = baseEntry as ISupportsEtag;
if (eTarget != null && eSource != null)
{
eTarget.Etag = eSource.Etag;
}
request.ContentStore = baseEntry;
request.IsBatch = type == GDataRequestType.Batch;
if (data != null)
{
GDataGAuthRequest gr = request as GDataGAuthRequest;
if (gr != null)
{
gr.AsyncData = data;
}
}
Stream outputStream = request.GetRequestStream();
baseEntry.SaveToXml(outputStream);
request.Execute();
outputStream.Close();
return(request.GetResponseStream());
}
/////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////
/// <summary>Inserts an AtomBase entry against a Uri. The overloaded
/// version here will check if this is an AbstractEntry and if it has
/// a media property set. If so, it will create a mime multipart envelope</summary>
/// <param name="feedUri">the uri for the feed this object should be posted against</param>
/// <param name="baseEntry">the entry to be inserted</param>
/// <param name="type">the type of request to create</param>
/// <param name="data">the async data payload</param>
/// <returns> the response as a stream</returns>
//////////////////////////////////////////////////////////////////////
internal override Stream EntrySend(Uri feedUri, AtomBase baseEntry, GDataRequestType type, AsyncSendData data)
{
if (feedUri == null)
{
throw new ArgumentNullException("feedUri");
}
Tracing.Assert(baseEntry != null, "baseEntry should not be null");
if (baseEntry == null)
{
throw new ArgumentNullException("baseEntry");
}
AbstractEntry entry = baseEntry as AbstractEntry;
// if the entry is not an abstractentry or if no media is set, do the default
if (entry == null || entry.MediaSource == null)
{
return(base.EntrySend(feedUri, baseEntry, type, data));
}
Stream outputStream = null;
Stream inputStream = null;
try
{
IGDataRequest request = RequestFactory.CreateRequest(type, feedUri);
request.Credentials = Credentials;
GDataRequest r = request as GDataRequest;
if (r != null)
{
r.ContentType = MediaService.MimeContentType;
r.Slug = entry.MediaSource.Name;
GDataRequestFactory f = RequestFactory as GDataRequestFactory;
if (f != null)
{
f.CustomHeaders.Add("MIME-version: 1.0");
}
}
if (data != null)
{
GDataGAuthRequest gr = request as GDataGAuthRequest;
if (gr != null)
{
gr.AsyncData = data;
}
}
outputStream = request.GetRequestStream();
inputStream = entry.MediaSource.GetDataStream();
StreamWriter w = new StreamWriter(outputStream);
w.WriteLine("Media multipart posting");
CreateBoundary(w, GDataRequestFactory.DefaultContentType);
baseEntry.SaveToXml(outputStream);
w.WriteLine();
CreateBoundary(w, entry.MediaSource.ContentType);
WriteInputStreamToRequest(inputStream, outputStream);
w.WriteLine();
w.WriteLine("--" + MediaService.MimeBoundary + "--");
w.Flush();
request.Execute();
outputStream.Close();
outputStream = null;
return(request.GetResponseStream());
}
catch (Exception)
{
throw;
}
finally
{
if (outputStream != null)
{
outputStream.Close();
}
if (inputStream != null)
{
inputStream.Close();
}
}
}
/// <summary>Gets an authentication token for the current credentials</summary>
public string QueryAuthToken(GDataCredentials gc)
{
GDataGAuthRequest request = new GDataGAuthRequest(GDataRequestType.Query, null, this);
return(request.QueryAuthToken(gc));
}
/// <summary>
/// this is a helper function for to send binary data to a resource
/// it is not worth running the other insert/saves through here, as this would involve
/// double buffering/copying of the bytes
/// </summary>
/// <param name="targetUri"></param>
/// <param name="inputStream"></param>
/// <param name="type"></param>
/// <param name="contentType">the contenttype to use in the request, if NULL is passed, factory default is used</param>
/// <param name="slugHeader">the slugHeader to use in the request, if NULL is passed, factory default is used</param>
/// <param name="etag">The http etag to pass into the request</param>
/// <param name="data">The async data needed for notifications</param>
/// <returns>Stream from the server response. You should close this stream explicitly.</returns>
private Stream StreamSend(
Uri targetUri,
Stream inputStream,
GDataRequestType type,
string contentType,
string slugHeader,
string etag,
AsyncSendData data)
{
Tracing.Assert(targetUri != null, "targetUri should not be null");
if (targetUri == null)
{
throw new ArgumentNullException("targetUri");
}
if (inputStream == null)
{
Tracing.Assert(inputStream != null, "payload should not be null");
throw new ArgumentNullException("inputStream");
}
if (type != GDataRequestType.Insert && type != GDataRequestType.Update)
{
Tracing.Assert(type != GDataRequestType.Insert && type != GDataRequestType.Update, "type needs to be insert or update");
throw new ArgumentNullException("type");
}
IGDataRequest request = RequestFactory.CreateRequest(type, targetUri);
request.Credentials = Credentials;
if (data != null)
{
GDataGAuthRequest gr = request as GDataGAuthRequest;
if (gr != null)
{
gr.AsyncData = data;
}
}
// set the contenttype of the request
if (contentType != null)
{
GDataRequest r = request as GDataRequest;
if (r != null)
{
r.ContentType = contentType;
}
}
if (slugHeader != null)
{
GDataRequest r = request as GDataRequest;
if (r != null)
{
r.Slug = slugHeader;
}
}
if (etag != null)
{
ISupportsEtag ise = request as ISupportsEtag;
if (ise != null)
{
ise.Etag = etag;
}
}
Stream outputStream = request.GetRequestStream();
WriteInputStreamToRequest(inputStream, outputStream);
request.Execute();
outputStream.Close();
return(new GDataReturnStream(request));
}
