mirror of https://gitee.com/bigwinds/arangodb
132 lines
4.4 KiB
C++
132 lines
4.4 KiB
C++
////////////////////////////////////////////////////////////////////////////////
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/// @brief Write-ahead log logfile
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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 2004-2013 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 triAGENS GmbH, Cologne, Germany
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///
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/// @author Jan Steemann
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/// @author Copyright 2011-2013, triAGENS GmbH, Cologne, Germany
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////////////////////////////////////////////////////////////////////////////////
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#include "Logfile.h"
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using namespace triagens::wal;
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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 logfile
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////////////////////////////////////////////////////////////////////////////////
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Logfile::Logfile (TRI_datafile_t* df,
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SealStatusType sealStatus,
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CollectionStatusType collectionStatus)
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: _df(df),
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_sealStatus(sealStatus),
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_collectionStatus(collectionStatus) {
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}
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////////////////////////////////////////////////////////////////////////////////
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/// @brief destroy the logfile
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////////////////////////////////////////////////////////////////////////////////
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Logfile::~Logfile () {
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this->close();
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}
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// -----------------------------------------------------------------------------
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// --SECTION-- public methods
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// -----------------------------------------------------------------------------
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////////////////////////////////////////////////////////////////////////////////
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/// @brief create a new logfile
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////////////////////////////////////////////////////////////////////////////////
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Logfile* Logfile::create (std::string const& filename,
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Logfile::IdType id,
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uint32_t size) {
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TRI_datafile_t* df = TRI_CreateDatafile(filename.c_str(), id, static_cast<TRI_voc_size_t>(size));
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if (df == nullptr) {
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int res = TRI_errno();
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if (res != TRI_ERROR_NO_ERROR) {
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LOG_ERROR("unable to create logfile '%s': %s",
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filename.c_str(),
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TRI_errno_string(res));
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return nullptr;
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}
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}
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Logfile* logfile = new Logfile(df, SealStatusType::UNKNOWN, CollectionStatusType::UNCOLLECTED);
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return logfile;
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}
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////////////////////////////////////////////////////////////////////////////////
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/// @brief open an existing logfile
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////////////////////////////////////////////////////////////////////////////////
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Logfile* Logfile::open (std::string const& filename) {
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TRI_datafile_t* df = TRI_OpenDatafile(filename.c_str());
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if (df == nullptr) {
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int res = TRI_errno();
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if (res != TRI_ERROR_NO_ERROR) {
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LOG_ERROR("unable to open logfile '%s': %s",
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filename.c_str(),
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TRI_errno_string(res));
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return nullptr;
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}
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}
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Logfile* logfile = new Logfile(df, SealStatusType::UNKNOWN, CollectionStatusType::UNCOLLECTED);
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return logfile;
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}
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////////////////////////////////////////////////////////////////////////////////
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/// @brief close a logfile
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////////////////////////////////////////////////////////////////////////////////
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void Logfile::close () {
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if (_df != nullptr) {
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TRI_CloseDatafile(_df);
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_df = nullptr;
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}
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}
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////////////////////////////////////////////////////////////////////////////////
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/// @brief seal a logfile
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////////////////////////////////////////////////////////////////////////////////
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void Logfile::seal () {
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LOG_INFO("sealing logfile %llu",
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(unsigned long long) id());
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assert(_sealStatus == SealStatusType::UNSEALED);
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_sealStatus = SealStatusType::REQUESTED;
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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}\\|/// @addtogroup\\|/// @page\\|// --SECTION--\\|/// @\\}"
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// End:
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