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arangodb/arangod/Replication/InitialSyncer.h

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////////////////////////////////////////////////////////////////////////////////
/// DISCLAIMER
///
/// Copyright 2014-2017 ArangoDB GmbH, Cologne, Germany
/// Copyright 2004-2014 triAGENS 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 Jan Steemann
////////////////////////////////////////////////////////////////////////////////
#ifndef ARANGOD_REPLICATION_INITIAL_SYNCER_H
#define ARANGOD_REPLICATION_INITIAL_SYNCER_H 1
#include "Basics/Common.h"
#include "Replication/ReplicationApplierConfiguration.h"
#include "Replication/Syncer.h"
#include "Utils/SingleCollectionTransaction.h"
#include <velocypack/Slice.h>
struct TRI_vocbase_t;
namespace arangodb {
class InitialSyncer : public Syncer {
public:
static constexpr double defaultBatchTimeout = 300.0;
public:
explicit InitialSyncer(ReplicationApplierConfiguration const&);
~InitialSyncer();
public:
virtual Result run(bool incremental) = 0;
/// @brief return the last log tick of the master at start
TRI_voc_tick_t getLastLogTick() const { return _masterInfo._lastLogTick; }
/// @brief return the collections that were synced
std::map<TRI_voc_cid_t, std::string> const& getProcessedCollections() const {
return _processedCollections;
}
std::string progress() const { return _progress; }
protected:
/// @brief set a progress message
virtual void setProgress(std::string const& msg) {}
/// @brief send a "start batch" command
Result sendStartBatch();
/// @brief send an "extend batch" command
Result sendExtendBatch();
/// @brief send a "finish batch" command
Result sendFinishBatch();
protected:
/// @brief progress message
std::string _progress;
/// @brief collections synced
std::map<TRI_voc_cid_t, std::string> _processedCollections;
/// @brief dump batch id
uint64_t _batchId;
/// @brief dump batch last update time
double _batchUpdateTime;
/// @brief ttl for batches
int _batchTtl;
};
}
#endif