mirror of https://gitee.com/bigwinds/arangodb
168 lines
6.8 KiB
C++
168 lines
6.8 KiB
C++
////////////////////////////////////////////////////////////////////////////////
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/// @brief V8 transaction context
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///
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/// @file
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///
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/// DISCLAIMER
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///
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/// Copyright 2014 ArangoDB GmbH, Cologne, Germany
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/// Copyright 2004-2014 triAGENS 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 Jan Steemann
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/// @author Copyright 2014, triagens GmbH, Cologne, Germany
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////////////////////////////////////////////////////////////////////////////////
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#include "Utils/V8TransactionContext.h"
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#include "Utils/CollectionNameResolver.h"
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#include "VocBase/transaction.h"
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#include "V8/v8-globals.h"
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#include <v8.h>
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using namespace triagens::arango;
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// -----------------------------------------------------------------------------
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// --SECTION-- constructors and destructors
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// -----------------------------------------------------------------------------
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////////////////////////////////////////////////////////////////////////////////
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/// @brief create the context
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////////////////////////////////////////////////////////////////////////////////
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V8TransactionContext::V8TransactionContext (bool embeddable)
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: TransactionContext(),
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_sharedTransactionContext(static_cast<V8TransactionContext*>(static_cast<TRI_v8_global_t*>(v8::Isolate::GetCurrent()->GetData(V8DataSlot))->_transactionContext)),
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_resolver(nullptr),
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_currentTransaction(nullptr),
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_ownResolver(false),
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_embeddable(embeddable) {
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// std::cout << TRI_CurrentThreadId() << ", V8TRANSACTIONCONTEXT " << this << " CTOR\r\n";
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}
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////////////////////////////////////////////////////////////////////////////////
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/// @brief destroy the context
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////////////////////////////////////////////////////////////////////////////////
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V8TransactionContext::~V8TransactionContext () {
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// std::cout << TRI_CurrentThreadId() << ", V8TRANSACTIONCONTEXT " << this << " DTOR\r\n";
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}
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////////////////////////////////////////////////////////////////////////////////
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/// @brief return the resolver
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////////////////////////////////////////////////////////////////////////////////
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CollectionNameResolver const* V8TransactionContext::getResolver () const {
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TRI_ASSERT_EXPENSIVE(_sharedTransactionContext != nullptr);
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TRI_ASSERT_EXPENSIVE(_sharedTransactionContext->_resolver != nullptr);
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return _sharedTransactionContext->_resolver;
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}
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////////////////////////////////////////////////////////////////////////////////
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/// @brief get parent transaction (if any)
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////////////////////////////////////////////////////////////////////////////////
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TRI_transaction_t* V8TransactionContext::getParentTransaction () const {
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// std::cout << TRI_CurrentThreadId() << ", V8TRANSACTIONCONTEXT " << this << " GETPARENT: " << _sharedTransactionContext->_currentTransaction << "\r\n";
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TRI_ASSERT_EXPENSIVE(_sharedTransactionContext != nullptr);
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return _sharedTransactionContext->_currentTransaction;
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}
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////////////////////////////////////////////////////////////////////////////////
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/// @brief register the transaction in the context
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////////////////////////////////////////////////////////////////////////////////
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int V8TransactionContext::registerTransaction (TRI_transaction_t* trx) {
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TRI_ASSERT_EXPENSIVE(_sharedTransactionContext != nullptr);
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TRI_ASSERT_EXPENSIVE(_sharedTransactionContext->_currentTransaction == nullptr);
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_sharedTransactionContext->_currentTransaction = trx;
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// std::cout << TRI_CurrentThreadId() << ", V8TRANSACTIONCONTEXT " << this << " REGISTER: " << trx << "\r\n";
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if (_sharedTransactionContext->_resolver == nullptr) {
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_sharedTransactionContext->_resolver = new CollectionNameResolver(trx->_vocbase);
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_ownResolver = true;
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}
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return TRI_ERROR_NO_ERROR;
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}
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////////////////////////////////////////////////////////////////////////////////
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/// @brief unregister the transaction from the context
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////////////////////////////////////////////////////////////////////////////////
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int V8TransactionContext::unregisterTransaction () {
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TRI_ASSERT_EXPENSIVE(_sharedTransactionContext != nullptr);
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_sharedTransactionContext->_currentTransaction = nullptr;
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// std::cout << TRI_CurrentThreadId() << ", V8TRANSACTIONCONTEXT " << this << " UNREGISTER\r\n";
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if (_ownResolver && _sharedTransactionContext->_resolver != nullptr) {
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_ownResolver = false;
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delete _sharedTransactionContext->_resolver;
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_sharedTransactionContext->_resolver = nullptr;
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}
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return TRI_ERROR_NO_ERROR;
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}
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////////////////////////////////////////////////////////////////////////////////
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/// @brief whether or not the transaction is embeddable
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////////////////////////////////////////////////////////////////////////////////
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bool V8TransactionContext::isEmbeddable () const {
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return _embeddable;
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}
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////////////////////////////////////////////////////////////////////////////////
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/// @brief make this context a global context
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////////////////////////////////////////////////////////////////////////////////
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void V8TransactionContext::makeGlobal () {
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_sharedTransactionContext = this;
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}
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////////////////////////////////////////////////////////////////////////////////
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/// @brief delete the resolver from the context
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////////////////////////////////////////////////////////////////////////////////
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void V8TransactionContext::deleteResolver () {
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TRI_ASSERT(hasResolver());
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delete _resolver;
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_resolver = nullptr;
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_ownResolver = false;
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}
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////////////////////////////////////////////////////////////////////////////////
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/// @brief check whether the transaction is embedded
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////////////////////////////////////////////////////////////////////////////////
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bool V8TransactionContext::IsEmbedded () {
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TRI_v8_global_t* v8g = static_cast<TRI_v8_global_t*>(v8::Isolate::GetCurrent()->GetData(V8DataSlot));
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if (v8g->_transactionContext == nullptr) {
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return false;
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}
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return static_cast<V8TransactionContext*>(v8g->_transactionContext)->_currentTransaction != nullptr;
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}
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// -----------------------------------------------------------------------------
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// --SECTION-- END-OF-FILE
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// -----------------------------------------------------------------------------
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// Local Variables:
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// mode: outline-minor
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// outline-regexp: "/// @brief\\|/// {@inheritDoc}\\|/// @page\\|// --SECTION--\\|/// @\\}"
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// End:
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