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arangodb/arangod/Aql/WakeupQueryCallback.cpp

54 lines
1.8 KiB
C++

////////////////////////////////////////////////////////////////////////////////
/// DISCLAIMER
///
/// Copyright 2018-2018 ArangoDB GmbH, Cologne, Germany
///
/// Licensed under the Apache License, Version 2.0 (the "License");
/// you may not use this file except in compliance with the License.
/// You may obtain a copy of the License at
///
/// http://www.apache.org/licenses/LICENSE-2.0
///
/// Unless required by applicable law or agreed to in writing, software
/// distributed under the License is distributed on an "AS IS" BASIS,
/// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
/// See the License for the specific language governing permissions and
/// limitations under the License.
///
/// Copyright holder is ArangoDB GmbH, Cologne, Germany
///
/// @author Michael Hackstein
////////////////////////////////////////////////////////////////////////////////
#include "WakeupQueryCallback.h"
#include "Aql/ExecutionBlock.h"
#include "Aql/Query.h"
#include "Scheduler/SchedulerFeature.h"
using namespace arangodb;
using namespace arangodb::aql;
WakeupQueryCallback::WakeupQueryCallback(ExecutionBlock* initiator,
Query* query)
: _initiator(initiator), _query(query) {}
bool WakeupQueryCallback::operator()(ClusterCommResult* result) {
TRI_ASSERT(_initiator != nullptr);
TRI_ASSERT(_query != nullptr);
// TODO Validate that _initiator and _query have not been deleted (ttl)
// TODO Handle exceptions
bool res = _initiator->handleAsyncResult(result);
if (_query->hasHandler()) {
auto scheduler = SchedulerFeature::SCHEDULER;
TRI_ASSERT(scheduler != nullptr);
if (scheduler == nullptr) {
// We are shutting down
return false;
}
scheduler->post(_query->continueHandler());
} else {
_query->continueAfterPause();
}
return res;
}