public override void TaskComplete(Tasks.Base sender, ICommandReply reply)
{
Type t = sender.GetType();
if (t == typeof(Tasks.CheckResourcePermissions))
{
Tasks.CheckResourcePermissions task = (Tasks.CheckResourcePermissions)sender;
if (!task.IsAuthorized)
{
TriggerOnAuthorizationDenied(task);
return;
}
// First, we load up revisions
for (int i = 0; i < _resource.VersionIds.Count; i++)
{
_revisions.Add(_resource.VersionIds[i], null);
}
// Now our _revisions holds indexes for all version ids
// Dispatch all our heads to get the revisions
// *note* do not combine these loops - we want the full dictionary before starting
for (int i = 0; i < _resource.VersionIds.Count; i++)
{
RunTaskProcess(new Tasks.HeadVersion(_db, _resource.VersionIds[i], _sendTimeout,
_receiveTimeout, _sendBufferSize, _receiveBufferSize));
}
}
else if (t == typeof(Tasks.HeadVersion))
{
Tasks.HeadVersion task = (Tasks.HeadVersion)sender;
if (!_revisions.ContainsKey(task.VersionId))
{
TriggerOnError(task, "The id '" + task.VersionId.ToString() + "' could not be found.", new KeyNotFoundException());
return;
}
lock (_revisions)
{
_receivedCount++;
_revisions[task.VersionId] = task.Revision;
if (_revisions.Count == _receivedCount)
{
TriggerOnComplete(reply, _revisions);
}
else
{
TriggerOnProgress(task, Networking.Protocols.Tcp.DirectionType.Download, -1, -1,
((decimal)((decimal)_receivedCount / (decimal)_revisions.Count)));
}
}
}
else
{
TriggerOnError(sender, reply.ToString(), null);
}
}
public override void TaskComplete(Tasks.Base sender, ICommandReply reply)
{
Type t = sender.GetType();
if (t == typeof(Tasks.DownloadResource))
{
Tasks.DownloadResource task = (Tasks.DownloadResource)sender;
_resource = task.Resource;
_remainder = task.Remainder;
RunTaskProcess(new Tasks.CheckResourcePermissions(_db, _resource, _requestingPartyType,
_session, Security.Authorization.ResourcePermissionType.Delete,
_sendTimeout, _receiveTimeout, _sendBufferSize, _receiveBufferSize));
}
else if (t == typeof(Tasks.CheckResourcePermissions))
{
Tasks.CheckResourcePermissions task = (Tasks.CheckResourcePermissions)sender;
if (!task.IsAuthorized)
{
TriggerOnAuthorizationDenied(task);
return;
}
// First, we load up revisions
for (int i = 0; i < _resource.VersionIds.Count; i++)
{
_versions.Add(_resource.VersionIds[i], new Data.Version(_resource.VersionIds[i]));
}
// Now our _revisions holds indexes for all version ids
// Dispatch all our heads to get the revisions
// *note* do not combine these loops - we want the full dictionary before starting
for (int i = 0; i < _resource.VersionIds.Count; i++)
{
RunTaskProcess(new Tasks.HeadVersion(_db, _resource.VersionIds[i], _sendTimeout,
_receiveTimeout, _sendBufferSize, _receiveBufferSize));
}
}
else if (t == typeof(Tasks.HeadVersion))
{
Tasks.HeadVersion task = (Tasks.HeadVersion)sender;
if (!_versions.ContainsKey(task.VersionId))
{
TriggerOnError(task, "The id '" + task.VersionId.ToString() + "' could not be found.", new KeyNotFoundException());
return;
}
lock (_versions)
{
_receivedCount++;
_versions[task.VersionId].UpdateRevision(task.Revision);
if (_versions.Count == _receivedCount)
{
List <Exception> errors;
List <Model.Document> docs = new List <Model.Document>();
Transitions.Resource txResource = new Transitions.Resource();
Model.Document doc = txResource.Transition(_resource, out errors);
if (errors != null)
{
TriggerOnError(null, errors[0].Message, errors[0]);
return;
}
// Pointless, we are deleting it
//doc.CombineWith(_remainder);
doc.Add("_deleted", true);
docs.Add(doc);
Dictionary <Data.VersionId, Data.Version> .Enumerator en = _versions.GetEnumerator();
while (en.MoveNext())
{
Transitions.Version txVersion = new Transitions.Version();
Model.Document doc2 = txVersion.Transition(en.Current.Value, out errors);
if (errors != null)
{
TriggerOnError(null, errors[0].Message, errors[0]);
return;
}
doc2.Add("_deleted", true);
docs.Add(doc2);
}
RunTaskProcess(new Tasks.MakeBulkDocument(docs, _sendTimeout, _receiveTimeout,
_sendBufferSize, _receiveBufferSize));
}
else
{
TriggerOnProgress(task, Networking.Protocols.Tcp.DirectionType.Download, -1, -1,
((decimal)((decimal)_receivedCount / (decimal)_versions.Count)));
}
}
}
else if (t == typeof(Tasks.MakeBulkDocument))
{
Tasks.MakeBulkDocument task = (Tasks.MakeBulkDocument)sender;
RunTaskProcess(new Tasks.UploadBulkDocuments(_db, task.BulkDocument, _sendTimeout,
_receiveTimeout, _sendBufferSize, _receiveBufferSize));
}
else if (t == typeof(Tasks.UploadBulkDocuments))
{
Tasks.UploadBulkDocuments task = (Tasks.UploadBulkDocuments)sender;
TriggerOnComplete(reply, task.Results);
}
else
{
TriggerOnError(sender, reply.ToString(), null);
}
}
public override void TaskComplete(Tasks.Base sender, ICommandReply reply)
{
/* We encounter a bit of an issue here. Upon doing some research it is easily resolved
* by couchdb. Lets examine.
*
* Issue: We update the resource to the server, connection is lost, we try to delete the
* versions newer than the target version of the rollback. This fails. We now have
* zombie versions that will block future recreation of those versions as the IDs will
* be the same.
*
* Solution: "Updating existing documents requires setting the _rev member to the
* revision being updated. To delete a document set the _deleted member to true."
* http://wiki.apache.org/couchdb/HTTP_Bulk_Document_API.
*
* Example:
* {
* "docs": [
* {"_id": "0", "_rev": "1-62657917", "_deleted": true},
* {"_id": "1", "_rev": "1-2089673485", "integer": 2, "string": "2"},
* {"_id": "2", "_rev": "1-2063452834", "integer": 3, "string": "3"}
* ]
* }
*
* Implementation: So, we already have bulk document post support. We simply need to
* load the bulkdocument with the resource and the _id and _rev for each version we want
* to remove. We will also want to set the _deleted to true.
*/
// 1) Download Resource
// 2) Check for VersionControl permission
// 3) Modify Resource (VersionIds, CurrentVersionId)
// 4) Make bulk document
// 5) Upload bulk document
Type t = sender.GetType();
if (t == typeof(Tasks.DownloadResource))
{
Tasks.DownloadResource task = (Tasks.DownloadResource)sender;
_resource = task.Resource;
_remainder = task.Remainder;
RunTaskProcess(new Tasks.CheckResourcePermissions(_db, _resource, _requestingPartyType,
_session, Security.Authorization.ResourcePermissionType.VersionControl,
_sendTimeout, _receiveTimeout, _sendBufferSize, _receiveBufferSize));
}
else if (t == typeof(Tasks.CheckResourcePermissions))
{
Data.VersionId oldCurrentVersionId;
Tasks.CheckResourcePermissions task = (Tasks.CheckResourcePermissions)sender;
if (!task.IsAuthorized)
{
TriggerOnAuthorizationDenied(task);
return;
}
// If version number < rollback -> error
// Versions: 0,1,2 / rollback: 2 -> 0th version
if (_resource.CurrentVersionId.VersionNumber < _rollbackDepth)
{
TriggerOnError(null, "Rollback depth out of range.", null);
return;
}
else if (_rollbackDepth <= 0)
{
TriggerOnError(null, "Rollback depth must be a positive value.", null);
return;
}
oldCurrentVersionId = _resource.CurrentVersionId;
_versionsToDelete = new Dictionary <Data.VersionId, Data.Version>();
long targetVersionNumber = _resource.CurrentVersionId.VersionNumber - _rollbackDepth;
for (int i = 0; i < _resource.VersionIds.Count; i++)
{
if (_resource.VersionIds[i].VersionNumber > targetVersionNumber)
{
Data.VersionId vid = new Data.VersionId(_resource.ResourceId, i);
_versionsToDelete.Add(vid, new Data.Version(vid));
}
}
// Removes the versions more recent than the rollback point
_resource.VersionIds.RemoveRange(_resource.VersionIds.Count - _rollbackDepth,
_rollbackDepth);
_resource.UpdateCurrentVersionBasedOnVersionsList();
Dictionary <Data.VersionId, Data.Version> .Enumerator en = _versionsToDelete.GetEnumerator();
// Dispatch all our heads to get the revisions
// *note* do not combine these loops - we want the full list before starting
while (en.MoveNext())
{
RunTaskProcess(new Tasks.HeadVersion(_db, en.Current.Key, _sendTimeout,
_receiveTimeout, _sendBufferSize, _receiveBufferSize));
}
}
else if (t == typeof(Tasks.HeadVersion))
{
Tasks.HeadVersion task = (Tasks.HeadVersion)sender;
if (!_versionsToDelete.ContainsKey(task.VersionId))
{
TriggerOnError(task, "The id '" + task.VersionId.ToString() + "' could not be found.", new KeyNotFoundException());
return;
}
lock (_versionsToDelete)
{
_receivedCount++;
_versionsToDelete[task.VersionId].UpdateRevision(task.Revision);
if (_versionsToDelete.Count == _receivedCount)
{
// Inside here we have a collection "docs" that contains the new resource
// which has the new "current" version and has all the more recent
// versions removed. We also have inside "docs" deletion markers for all
// the more recent versions.
List <Exception> errors;
List <Model.Document> docs = new List <Model.Document>();
Transitions.Resource txResource = new Transitions.Resource();
Model.Document doc = txResource.Transition(_resource, out errors);
if (errors != null)
{
TriggerOnError(null, errors[0].Message, errors[0]);
return;
}
doc.CombineWith(_remainder);
docs.Add(doc);
Dictionary <Data.VersionId, Data.Version> .Enumerator en = _versionsToDelete.GetEnumerator();
// Dispatch all our heads to get the revisions
// *note* do not combine these loops - we want the full list before starting
while (en.MoveNext())
{
Transitions.Version txVersion = new Transitions.Version();
Model.Document doc2 = txVersion.Transition(en.Current.Value, out errors);
if (errors != null)
{
TriggerOnError(null, errors[0].Message, errors[0]);
return;
}
doc2.Add("_deleted", true);
docs.Add(doc2);
}
RunTaskProcess(new Tasks.MakeBulkDocument(docs, _sendTimeout, _receiveTimeout,
_sendBufferSize, _receiveBufferSize));
}
}
}
else if (t == typeof(Tasks.MakeBulkDocument))
{
Tasks.MakeBulkDocument task = (Tasks.MakeBulkDocument)sender;
RunTaskProcess(new Tasks.UploadBulkDocuments(_db, task.BulkDocument, _sendTimeout,
_receiveTimeout, _sendBufferSize, _receiveBufferSize));
}
else if (t == typeof(Tasks.UploadBulkDocuments))
{
Tasks.UploadBulkDocuments task = (Tasks.UploadBulkDocuments)sender;
TriggerOnComplete(reply, task.Results);
}
else
{
TriggerOnError(sender, reply.ToString(), null);
}
}
