public String OnStreamResponse(Stream streamResponse, IDictionary <String, Object> parameters, Boolean localCacheEnabled)
{
String responseString = null;
if (localCacheEnabled)
{
responseString = C8oTranslator.StreamToString(streamResponse);
this.OnStringResponse(responseString, parameters);
}
else
{
this.OnXmlResponse(C8oTranslator.StreamToXml(streamResponse), parameters);
}
return(responseString);
}
private async Task DownloadChunk(C8o c8o, Stream createdFileStream, string filepath, string fsConnector, string uuid, int i, JObject task, C8oFileTransferStatus transferStatus)
{
Stream chunkFS = null;
var chunkpath = filepath + ".chunk";
try
{
var fsurl = c8o.EndpointConvertigo + "/fullsync/" + fsConnector + "/" + uuid + "_" + i;
var fsurlatt = fsurl + "/chunk";
var digest = "no digest";
int retry = 5;
while (retry > 0)
{
try
{
Debug("Getting the document at: " + fsurl);
var responseString = C8oTranslator.StreamToString(c8o.httpInterface.HandleGetRequest(fsurl).Result.GetResponseStream());
Debug("The document content: " + responseString);
var json = C8oTranslator.StringToJson(responseString);
digest = json["_attachments"]["chunk"]["digest"].ToString();
retry = 0;
}
catch (Exception e)
{
if (retry-- > 0)
{
Debug("Failed to get the chunk descriptor, retry. Cause: " + e.Message);
}
else
{
throw new Exception("Failed to get the chunk descriptor at " + fsurl, e);
}
}
}
chunkFS = fileManager.CreateFile(chunkpath);
retry = 5;
while (retry > 0)
{
var md5 = "no md5";
try
{
Debug("Getting the attachment at: " + fsurlatt);
chunkFS.Position = 0;
AppendChunk(chunkFS, fsurlatt, c8o);
chunkFS.Position = 0;
md5 = "md5-" + c8o.GetMD5(chunkFS);
}
catch (Exception e)
{
Debug("Download Chunk failed, retry it. Cause: " + e.Message);
}
Debug("Comparing digests: " + digest + " / " + md5);
if (digest.Equals(md5))
{
chunkFS.Position = 0;
chunkFS.CopyTo(createdFileStream, 4096);
Debug("Chunk '" + uuid + "_" + i + "' assembled.");
retry = 0;
await c8oTask.CallJson("fs://.post",
C8o.FS_POLICY, C8o.FS_POLICY_MERGE,
"_id", task["_id"].Value <string>(),
"download", transferStatus.Current = i + 1,
"position", createdFileStream.Position
).Async();
Notify(transferStatus);
}
else if (retry-- > 0)
{
Debug("The digest doesn't match, retry downloading.");
}
else
{
throw new Exception("Invalid digest: " + digest + " / " + md5);
}
}
}
catch (Exception e2)
{
Debug("Failed to DownloadChunk, retry soon.");
throw e2;
}
finally
{
if (chunkFS != null)
{
chunkFS.Dispose();
}
fileManager.DeleteFile(chunkpath);
}
}