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1931.2.1
by David Shrewsbury
Move transaction_reader from drizzled/message to transaction_log plugin; also pulled transaction_reader file operations out into separate class. |
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/* -*- mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; -*-
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* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
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*
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1999.6.1
by kalebral at gmail
update Copyright strings to a more common format to help with creating the master debian copyright file |
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* Copyright (C) 2010 David Shrewsbury <shrewsbury.dave@gmail.com>
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1931.2.1
by David Shrewsbury
Move transaction_reader from drizzled/message to transaction_log plugin; also pulled transaction_reader file operations out into separate class. |
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/**
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* @file
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* Declaration of a class used to read the GPB messages written
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* by transaction_writer.
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*/
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2234
by Brian Aker
Mass removal of ifdef/endif in favor of pragma once. |
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#pragma once
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1931.2.1
by David Shrewsbury
Move transaction_reader from drizzled/message to transaction_log plugin; also pulled transaction_reader file operations out into separate class. |
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#include <string> |
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#include <google/protobuf/io/zero_copy_stream_impl.h> |
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2173.2.1
by Monty Taylor
Fixes incorrect usage of include |
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#include <drizzled/message/transaction.pb.h> |
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1931.2.1
by David Shrewsbury
Move transaction_reader from drizzled/message to transaction_log plugin; also pulled transaction_reader file operations out into separate class. |
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class TransactionFileReader |
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{
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public: |
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TransactionFileReader(); |
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~TransactionFileReader(); |
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/**
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* Open the given transaction log file.
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*
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* @param filename Name of the file to open
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* @param start_pos Position within the file to begin reading
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*
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* @retval true Success
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* @retval false Failure
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*/
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bool openFile(const std::string &filename, int start_pos = 0); |
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/**
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* Read in next Transaction message and checksum.
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*
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* @note Error message will be "EOF" when end-of-file is reached.
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*
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* @param transaction Storage for the Transaction message
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* @param checksum Storage for the checksum value
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*
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* @retval true Success
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* @retval false Failure or EOF
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*/
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bool getNextTransaction(drizzled::message::Transaction &transaction, |
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uint32_t *checksum); |
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/**
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* Perform a checksum of the last read transaction message.
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*/
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uint32_t checksumLastReadTransaction(); |
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/**
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* Get the error message from the last failed operation.
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*/
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2385.3.30
by Olaf van der Spek
cppcheck |
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const std::string& getErrorString() const |
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1931.2.1
by David Shrewsbury
Move transaction_reader from drizzled/message to transaction_log plugin; also pulled transaction_reader file operations out into separate class. |
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{
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return error; |
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}
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private: |
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int file; |
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char *buffer; |
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char *temp_buffer; |
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uint32_t previous_length; |
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std::string error; |
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google::protobuf::io::ZeroCopyInputStream *raw_input; |
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};
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