// Processes a change in the subscribed database
private void DatabaseChanged(object sender, DatabaseChangeEventArgs args)
{
foreach (var change in args.Changes)
{
var rev = change.AddedRevision;
var winningRev = change.WinningRevision;
if (!ChangesIncludeConflicts)
{
if (winningRev == null)
{
continue; // this change doesn't affect the winning rev ID, no need to send it
}
if (rev.Equals(winningRev))
{
// This rev made a _different_ rev current, so substitute that one.
// We need to emit the current sequence # in the feed, so put it in the rev.
// This isn't correct internally (this is an old rev so it has an older sequence)
// but consumers of the _changes feed don't care about the internal state.
if (ChangesIncludeDocs)
{
_db.LoadRevisionBody(rev, DocumentContentOptions.None);
}
}
}
if (!_db.RunFilter(ChangesFilter, null, rev))
{
continue;
}
if (ChangesFeedMode == ChangesFeedMode.LongPoll)
{
_changes.Add(rev);
}
else
{
Log.D(TAG, "Sending continuous change chunk");
var written = Response.SendContinuousLine(DatabaseMethods.ChangesDictForRev(rev, this), ChangesFeedMode);
if (!written)
{
Terminate();
}
}
}
if (ChangesFeedMode == ChangesFeedMode.LongPoll && _changes.Count > 0)
{
var body = new Body(DatabaseMethods.ResponseBodyForChanges(_changes, 0, this));
Response.WriteData(body.AsJson(), true);
CouchbaseLiteRouter.ResponseFinished(this);
}
}
// This method is called when an observed replication changes
private void ReplicationChanged(object sender, ReplicationChangeEventArgs e)
{
var replication = (Replication)sender;
if (replication.LocalDatabase.Manager == DbManager)
{
if (!Response.SendContinuousLine(replication.ActiveTaskInfo, ChangesFeedMode))
{
replication.Changed -= ReplicationChanged;
CouchbaseLiteRouter.ResponseFinished(this);
}
}
}
// Tear down this object because an error occurred
private void Terminate()
{
var db = Interlocked.Exchange(ref _db, null);
if (db == null)
{
return;
}
Log.To.Router.I(TAG, "Shutting down DBMonitorCouchbaseState");
db.Changed -= DatabaseChanged;
CouchbaseLiteRouter.ResponseFinished(this);
_heartbeatTimer?.Dispose();
_heartbeatTimer = null;
}
// Tear down this object because an error occurred
private void Terminate()
{
if (_db == null)
{
return;
}
_db.Changed -= DatabaseChanged;
CouchbaseLiteRouter.ResponseFinished(this);
_db = null;
if (_heartbeatTimer != null)
{
_heartbeatTimer.Dispose();
_heartbeatTimer = null;
}
}
// Tear down this object because an error occurred
private void Terminate()
{
if (Db == null)
{
return;
}
Log.To.Router.I(TAG, "Shutting down DBMonitorCouchbaseState");
Db.Changed -= DatabaseChanged;
CouchbaseLiteRouter.ResponseFinished(this);
Db = null;
if (_heartbeatTimer != null)
{
_heartbeatTimer.Dispose();
_heartbeatTimer = null;
}
}