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/*
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*
*/
/**
* \file jinf.h
*
* Qpid asynchronous store plugin library
*
* This file contains the code for the mrg::journal::jinf class.
*
* \author Kim van der Riet
*/
#ifndef QPID_LEGACYSTORE_JRNL_JINF_H
#define QPID_LEGACYSTORE_JRNL_JINF_H
#include <ctime>
#include <string>
#include <sys/types.h>
#include <vector>
namespace mrg
{
namespace journal
{
/**
* \class jinf
* \brief Class to handle the journal information file <basename>.jinf.
*/
class jinf
{
public:
typedef std::vector<u_int16_t> pfid_list; // pfids
typedef pfid_list::const_iterator pfidl_citr;
private:
u_int8_t _jver;
std::string _jid;
std::string _jdir;
std::string _base_filename;
std::string _filename;
timespec _ts;
u_int16_t _num_jfiles;
bool _ae;
u_int32_t _ae_max_jfiles;
u_int32_t _jfsize_sblks;
u_int16_t _sblk_size_dblks;
u_int32_t _dblk_size;
u_int32_t _wcache_pgsize_sblks;
u_int16_t _wcache_num_pages;
u_int32_t _rcache_pgsize_sblks;
u_int16_t _rcache_num_pages;
std::tm* _tm_ptr;
bool _valid_flag;
bool _analyzed_flag;
pfid_list _pfid_list;
bool _initial_owi;
bool _frot;
public:
// constructor for reading existing jinf file
jinf(const std::string& jinf_filename, bool validate_flag);
// constructor for writing jinf file
jinf(const std::string& jid, const std::string& jdir, const std::string& base_filename,
const u_int16_t num_jfiles, const bool auto_expand, const u_int16_t ae_max_jfiles,
const u_int32_t jfsize_sblks, const u_int32_t wcache_pgsize_sblks, const u_int16_t wcache_num_pages,
const timespec& ts);
virtual ~jinf();
void validate();
void analyze();
void write();
inline u_int8_t jver() const { return _jver; }
inline const std::string& jid() const { return _jid; }
inline const std::string& jdir() const { return _jdir; }
inline void set_jdir(const std::string& jdir) { _jdir = jdir; }
inline const std::string& base_filename() const { return _base_filename; }
inline const timespec& ts() const { return _ts; }
inline u_int16_t num_jfiles() const { return _num_jfiles; }
u_int16_t incr_num_jfiles();
inline bool is_ae() const { return _ae; }
inline u_int16_t ae_max_jfiles() const { return _ae_max_jfiles; }
inline u_int32_t jfsize_sblks() const { return _jfsize_sblks; }
inline u_int16_t sblk_size_dblks() const { return _sblk_size_dblks; }
inline u_int32_t dblk_size() const { return _dblk_size; }
inline u_int32_t wcache_pgsize_sblks() const { return _wcache_pgsize_sblks; }
inline u_int16_t wcache_num_pages() const { return _wcache_num_pages; }
inline u_int32_t rcache_pgsize_sblks() const { return _rcache_pgsize_sblks; }
inline u_int16_t rcache_num_pages() const { return _rcache_num_pages; }
u_int16_t get_first_pfid();
u_int16_t get_last_pfid();
pfid_list& get_pfid_list();
void get_normalized_pfid_list(pfid_list& pfid_list);
bool get_initial_owi();
bool get_frot();
std::string to_string() const;
std::string xml_str() const;
private:
void set_filename();
void read(const std::string& jinf_filename);
bool bool_value(char* line) const;
u_int16_t u_int16_value(char* line) const;
u_int32_t u_int32_value(char* line) const;
std::string& string_value(std::string& str, char* line) const;
char* find_value(char* line) const;
u_int32_t get_filesize(const std::string& file_name) const;
};
} // namespace journal
} // namespace mrg
#endif // ifndef QPID_LEGACYSTORE_JRNL_JINF_H
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