mirror of https://gitee.com/bigwinds/arangodb
75 lines
2.8 KiB
C++
75 lines
2.8 KiB
C++
////////////////////////////////////////////////////////////////////////////////
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/// DISCLAIMER
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///
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/// Copyright 2019 ArangoDB GmbH, Cologne, Germany
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///
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/// Licensed under the Apache License, Version 2.0 (the "License");
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/// you may not use this file except in compliance with the License.
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/// You may obtain a copy of the License at
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///
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/// http://www.apache.org/licenses/LICENSE-2.0
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///
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/// Unless required by applicable law or agreed to in writing, software
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/// distributed under the License is distributed on an "AS IS" BASIS,
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/// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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/// See the License for the specific language governing permissions and
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/// limitations under the License.
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///
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/// Copyright holder is ArangoDB GmbH, Cologne, Germany
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///
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/// @author Simon Grätzer
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////////////////////////////////////////////////////////////////////////////////
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#ifndef ARANGOD_CLUSTER_CLUSTER_TRX_METHODS_H
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#define ARANGOD_CLUSTER_CLUSTER_TRX_METHODS_H 1
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#include "Basics/Common.h"
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#include "VocBase/LogicalCollection.h"
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#include "VocBase/voc-types.h"
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#include <velocypack/Slice.h>
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namespace arangodb {
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struct OperationOptions;
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class TransactionState;
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class ClusterTrxMethods {
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public:
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// wrapper Class for static functions.
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// Cannot be instanciated.
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ClusterTrxMethods() = delete;
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~ClusterTrxMethods() = delete;
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/// @brief begin a transaction on all followers
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static arangodb::Result beginTransactionOnLeaders(TransactionState&,
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std::vector<ServerID> const& leaders);
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/// @brief begin a transaction on all followers
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static arangodb::Result beginTransactionOnFollowers(transaction::Methods& trx,
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arangodb::FollowerInfo& info,
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std::vector<ServerID> const& followers);
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/// @brief commit a transaction on a subordinate
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static arangodb::Result commitTransaction(transaction::Methods& trx);
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/// @brief commit a transaction on a subordinate
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static arangodb::Result abortTransaction(transaction::Methods& trx);
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/// @brief add the transaction ID header for servers
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static void addTransactionHeader(transaction::Methods const& trx, ServerID const& server,
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std::unordered_map<std::string, std::string>& headers);
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/// @brief add transaction ID header for setting up AQL snippets
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static void addAQLTransactionHeader(transaction::Methods const& trx, ServerID const& server,
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std::unordered_map<std::string, std::string>& headers);
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/// @brief check whether this is any kind el cheapo transaction
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static bool isElCheapo(transaction::Methods const& trx);
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static bool isElCheapo(TransactionState const& state);
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};
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} // namespace arangodb
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#endif
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