private MultipartWriter GetMultipartWriter(RevisionInternal rev, string boundary)
{
// Find all the attachments with "follows" instead of a body, and put 'em in a multipart stream.
// It's important to scan the _attachments entries in the same order in which they will appear
// in the JSON, because CouchDB expects the MIME bodies to appear in that same order
var bodyStream = default(MultipartWriter);
var attachments = rev.GetAttachments();
foreach (var a in attachments)
{
var attachment = a.Value.AsDictionary <string, object>();
if (attachment != null && attachment.GetCast <bool>("follows"))
{
if (bodyStream == null)
{
// Create the HTTP multipart stream:
bodyStream = new MultipartWriter("multipart/related", boundary);
bodyStream.SetNextPartHeaders(new Dictionary <string, string> {
{ "Content-Type", "application/json" }
});
// Use canonical JSON encoder so that _attachments keys will be written in the
// same order that this for loop is processing the attachments.
var json = Manager.GetObjectMapper().WriteValueAsBytes(rev.GetProperties(), true);
if (CanSendCompressedRequests)
{
bodyStream.AddGZippedData(json);
}
else
{
bodyStream.AddData(json);
}
}
// Add attachment as another MIME part:
var disposition = String.Format("attachment; filename={0}", Misc.QuoteString(a.Key));
var contentType = attachment.GetCast <string>("type");
var contentEncoding = attachment.GetCast <string>("encoding");
bodyStream.SetNextPartHeaders(new NonNullDictionary <string, string> {
{ "Content-Disposition", disposition },
{ "Content-Type", contentType },
{ "Content-Encoding", contentEncoding }
});
var attachmentObj = default(AttachmentInternal);
try {
attachmentObj = LocalDatabase.AttachmentForDict(attachment, a.Key);
} catch (CouchbaseLiteException) {
return(null);
}
bodyStream.AddStream(attachmentObj.ContentStream, attachmentObj.Length);
}
}
return(bodyStream);
}
private static MultipartWriter MultipartWriterForRev(Database db, RevisionInternal rev, string contentType)
{
var writer = new MultipartWriter(contentType, null);
writer.SetNextPartHeaders(new Dictionary <string, string> {
{ "Content-Type", "application/json" }
});
writer.AddData(rev.GetBody().AsJson());
var attachments = rev.GetAttachments();
if (attachments == null)
{
return(writer);
}
foreach (var entry in attachments)
{
var attachment = entry.Value.AsDictionary <string, object>();
if (attachment != null && attachment.GetCast <bool>("follows", false))
{
var disposition = String.Format("attachment; filename={0}", Database.Quote(entry.Key));
writer.SetNextPartHeaders(new Dictionary <string, string> {
{ "Content-Disposition", disposition }
});
var attachObj = default(AttachmentInternal);
try {
attachObj = db.AttachmentForDict(attachment, entry.Key);
} catch (CouchbaseLiteException) {
return(null);
}
var fileURL = attachObj.ContentUrl;
if (fileURL != null)
{
writer.AddFileUrl(fileURL);
}
else
{
writer.AddStream(attachObj.ContentStream);
}
}
}
return(writer);
}
public void ForceInsert(RevisionInternal inRev, IList <string> revHistory, StoreValidation validationBlock, Uri source)
{
if (_config.HasFlag(C4DatabaseFlags.ReadOnly))
{
throw new CouchbaseLiteException("Attempting to write to a readonly database", StatusCode.Forbidden);
}
var json = Manager.GetObjectMapper().WriteValueAsString(inRev.GetProperties(), true);
var change = default(DocumentChange);
RunInTransaction(() =>
{
// First get the CBForest doc:
WithC4Document(inRev.GetDocId(), null, false, true, doc =>
{
ForestDBBridge.Check(err => Native.c4doc_insertRevisionWithHistory(doc, json, inRev.IsDeleted(),
inRev.GetAttachments() != null, revHistory.ToArray(), err));
// Save updated doc back to the database:
var isWinner = SaveDocument(doc, revHistory[0], inRev.GetProperties());
inRev.SetSequence((long)doc->sequence);
change = ChangeWithNewRevision(inRev, isWinner, doc, source);
});
return(true);
});
if (change != null && Delegate != null)
{
Delegate.DatabaseStorageChanged(change);
}
}
public RevisionInternal PutRevision(string inDocId, string inPrevRevId, IDictionary <string, object> properties,
bool deleting, bool allowConflict, StoreValidation validationBlock)
{
if (_config.HasFlag(C4DatabaseFlags.ReadOnly))
{
throw new CouchbaseLiteException("Attempting to write to a readonly database", StatusCode.Forbidden);
}
var json = default(string);
if (properties != null)
{
json = Manager.GetObjectMapper().WriteValueAsString(Database.StripDocumentJSON(properties), true);
}
else
{
json = "{}";
}
if (inDocId == null)
{
inDocId = Misc.CreateGUID();
}
var putRev = default(RevisionInternal);
var change = default(DocumentChange);
var success = RunInTransaction(() =>
{
var docId = inDocId;
var prevRevId = inPrevRevId;
var transactionSuccess = false;
WithC4Document(docId, null, false, true, doc =>
{
if (prevRevId != null)
{
// Updating an existing revision; make sure it exists and is a leaf:
ForestDBBridge.Check(err => Native.c4doc_selectRevision(doc, prevRevId, false, err));
if (!allowConflict && !doc->selectedRev.IsLeaf)
{
throw new CouchbaseLiteException(StatusCode.Conflict);
}
}
else
{
// No parent revision given:
if (deleting)
{
// Didn't specify a revision to delete: NotFound or a Conflict, depending
throw new CouchbaseLiteException(doc->Exists ? StatusCode.Conflict : StatusCode.NotFound);
}
// If doc exists, current rev must be in a deleted state or there will be a conflict:
if (Native.c4doc_selectCurrentRevision(doc))
{
if (doc->selectedRev.IsDeleted)
{
// New rev will be child of the tombstone:
prevRevId = (string)doc->revID;
}
else
{
throw new CouchbaseLiteException(StatusCode.Conflict);
}
}
}
// Compute the new revID. (Can't be done earlier because prevRevID may have changed.)
var newRevID = Delegate != null ? Delegate.GenerateRevID(Encoding.UTF8.GetBytes(json), deleting, prevRevId) : null;
if (newRevID == null)
{
throw new CouchbaseLiteException(StatusCode.BadId);
}
putRev = new RevisionInternal(docId, newRevID, deleting);
if (properties != null)
{
properties["_id"] = docId;
properties["_rev"] = newRevID;
putRev.SetProperties(properties);
}
// Run any validation blocks:
if (validationBlock != null)
{
var prevRev = default(RevisionInternal);
if (prevRevId != null)
{
prevRev = new RevisionInternal(docId, prevRevId, doc->selectedRev.IsDeleted);
}
var status = validationBlock(putRev, prevRev, prevRevId);
if (status.IsError)
{
throw new CouchbaseLiteException(String.Format("{0} failed validation", putRev),
status.Code);
}
}
// Add the revision to the database:
ForestDBBridge.Check(err => Native.c4doc_insertRevision(doc, newRevID, json, deleting,
putRev.GetAttachments() != null, allowConflict, err));
var isWinner = SaveDocument(doc, newRevID, properties);
putRev.SetSequence((long)doc->sequence);
change = ChangeWithNewRevision(putRev, isWinner, doc, null);
transactionSuccess = true;
});
return(transactionSuccess);
});
if (!success)
{
return(null);
}
if (Delegate != null && change != null)
{
Delegate.DatabaseStorageChanged(change);
}
return(putRev);
}