////////////////////////////////////////////////////////////////////////////////
/// 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 Simon Grätzer
////////////////////////////////////////////////////////////////////////////////

#ifndef ARANGOD_REST_HANDLER_REST_WAL_ACCESS_HANDLER_H
#define ARANGOD_REST_HANDLER_REST_WAL_ACCESS_HANDLER_H 1

#include "RestHandler/RestVocbaseBaseHandler.h"
#include "StorageEngine/WalAccess.h"

namespace arangodb {

/// Storage engine agnostic handler for using the WalAccess interface
class RestWalAccessHandler : public arangodb::RestVocbaseBaseHandler {
 public:
  RestWalAccessHandler(GeneralRequest*, GeneralResponse*);

 public:
  char const* name() const override final { return "RestWalAccessHandler"; }
  RequestLane lane() const override final {
    return RequestLane::SERVER_REPLICATION;
  }
  RestStatus execute() override;

 private:
  bool parseFilter(WalAccess::Filter& filter);

  void handleCommandTickRange(WalAccess const* wal);
  void handleCommandLastTick(WalAccess const* wal);
  void handleCommandTail(WalAccess const* wal);
  void handleCommandDetermineOpenTransactions(WalAccess const* wal);

  void grantTemporaryRights();
};
}  // namespace arangodb

#endif