db_pool.h
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/*
* Copyright 2002-2014 the original author or authors.
*
* Licensed 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
*
* CC/LICENSE
*
* 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.
*/
#ifndef _DB_POOL_H_
#define _DB_POOL_H_
#include "common.h"
#include "mysql_connection.h"
#include "mysql_driver.h"
#include "statement.h"
using namespace sql;
class DBContainer {
public:
DBContainer();
virtual ~DBContainer();
int32_t create_container(mysql::MySQL_Driver* driver, string& host, string& user,
string& passwd, uint32_t conn_num);
Connection* get_connection();
void free_connection(Connection* conn);
private:
vector<Connection*> _idle_conn_vec;
set<Connection*> _busy_conn_set;
sql::ConnectOptionsMap _connection_properties;
pthread_mutex_t _mutex;
sem_t _sem_conn;
uint32_t _conn_num;
};
class DBPool {
public:
DBPool();
virtual ~DBPool();
public:
int32_t create_container_to_pool(uint32_t id, string& host, string& user, string& passwd,
uint32_t conn_num, uint32_t timeout);
Connection* get_connection(uint32_t id, uint32_t timeout = 0);
void free_connection(uint32_t id, Connection* conn);
private:
map<int32_t, DBContainer*> _id_conn_map;
};
#endif