98 lines
3.7 KiB
C
98 lines
3.7 KiB
C
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/*------------------------------------------------------------------------------*
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* Architecture & Implementation of DBMS *
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*------------------------------------------------------------------------------*
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* Copyright 2022 Databases and Information Systems Group TU Dortmund *
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* Visit us at *
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* http://dbis.cs.tu-dortmund.de/cms/en/home/ *
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* *
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, *
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL *
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR *
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, *
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR *
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* OTHER DEALINGS IN THE SOFTWARE. *
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* *
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* Authors: *
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* Maximilian Berens <maximilian.berens@tu-dortmund.de> *
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* Roland Kühn <roland.kuehn@cs.tu-dortmund.de> *
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* Jan Mühlig <jan.muehlig@tu-dortmund.de> *
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*------------------------------------------------------------------------------*
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*/
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#pragma once
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#include "transaction.h"
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#include <functional>
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namespace beedb::concurrency
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{
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/**
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* The transaction callback will be called when a transaction begins
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* and when the transaction was aborted or committed.
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*/
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class TransactionCallback
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{
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public:
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TransactionCallback() = default;
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virtual ~TransactionCallback() = default;
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/**
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* Will be called when a transaction starts.
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* @param transaction Transaction that started.
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*/
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virtual void on_begin(Transaction *transaction) = 0;
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/**
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* Will be called when a transaction ends. This may be
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* a successful or not successful commit or abort.
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* @param transaction Transaction that ends.
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* @param successful True, when successful committed.
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*/
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virtual void on_end(Transaction *transaction, const bool successful) = 0;
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};
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class SilentTransactionCallback : public TransactionCallback
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{
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public:
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SilentTransactionCallback() = default;
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~SilentTransactionCallback() override = default;
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void on_begin(Transaction *) override
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{
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}
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void on_end(Transaction *, const bool) override
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{
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}
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};
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/**
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* This implementation of a transaction callback takes two lambdas
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* that will be invoked on start and end of a transaction.
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*/
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class FunctionTransactionCallback : public TransactionCallback
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{
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public:
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FunctionTransactionCallback(std::function<void(Transaction *)> &&begin_callback,
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std::function<void(Transaction *, const bool)> &&end_callback)
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: _begin_transaction_callback(std::move(begin_callback)), _end_transaction_callback(std::move(end_callback))
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{
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}
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~FunctionTransactionCallback() override = default;
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void on_begin(Transaction *transaction) override
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{
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_begin_transaction_callback(transaction);
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}
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void on_end(Transaction *transaction, const bool successful) override
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{
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_end_transaction_callback(transaction, successful);
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}
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private:
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std::function<void(Transaction *)> _begin_transaction_callback;
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std::function<void(Transaction *, const bool)> _end_transaction_callback;
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};
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} // namespace beedb::concurrency
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