/// <summary>
/// Starts the continuous query.
/// </summary>
private ClientContinuousQueryHandle QueryContinuousInternal(
ContinuousQueryClient <TK, TV> continuousQuery)
{
Debug.Assert(continuousQuery != null);
Debug.Assert(continuousQuery.Listener != null);
var listener = continuousQuery.Listener;
return(DoOutInOp(
ClientOp.QueryContinuous,
ctx => WriteContinuousQuery(ctx, continuousQuery),
ctx =>
{
var queryId = ctx.Stream.ReadLong();
var qryHandle = new ClientContinuousQueryHandle(ctx.Socket, queryId);
ctx.Socket.AddNotificationHandler(queryId,
(stream, err) => HandleContinuousQueryEvents(stream, err, listener, qryHandle));
return qryHandle;
}));
}
/// <summary>
/// Handles continuous query events.
/// </summary>
private void HandleContinuousQueryEvents(IBinaryStream stream, Exception err,
ICacheEntryEventListener <TK, TV> listener, ClientContinuousQueryHandle qryHandle)
{
if (err != null)
{
qryHandle.OnError(err);
return;
}
var flags = (ClientFlags)stream.ReadShort();
var opCode = (ClientOp)stream.ReadShort();
if ((flags & ClientFlags.Error) == ClientFlags.Error)
{
var status = (ClientStatusCode)stream.ReadInt();
var msg = _marsh.Unmarshal <string>(stream);
GetLogger().Error("Error while handling Continuous Query notification ({0}): {1}", status, msg);
qryHandle.OnError(new IgniteClientException(msg, null, status));
return;
}
if (opCode == ClientOp.QueryContinuousEventNotification)
{
var evts = ContinuousQueryUtils.ReadEvents <TK, TV>(stream, _marsh, _keepBinary);
listener.OnEvent(evts);
return;
}
GetLogger().Error("Error while handling Continuous Query notification: unexpected op '{0}'", opCode);
}
