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/* - mode: c; c-basic-offset: 2; indent-tabs-mode: nil; -*-
* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
*
* Copyright (C) 2010 Marcus Eriksson
*
* Authors:
*
* Marcus Eriksson <krummas@gmail.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <config.h>
#include <drizzled/gettext.h>
#include "rabbitmq_handler.h"
using namespace std;
namespace drizzle_plugin
{
RabbitMQHandler::RabbitMQHandler(const std::string &rabbitMQHost,
const in_port_t rabbitMQPort,
const std::string &rabbitMQUsername,
const std::string &rabbitMQPassword,
const std::string &rabbitMQVirtualhost,
const std::string &rabbitMQExchange,
const std::string &rabbitMQRoutingKey)
throw(rabbitmq_handler_exception) :
rabbitmqConnection(amqp_new_connection()),
hostname(rabbitMQHost),
port(rabbitMQPort),
username(rabbitMQUsername),
password(rabbitMQPassword),
virtualhost(rabbitMQVirtualhost),
exchange(rabbitMQExchange),
routingKey(rabbitMQRoutingKey)
{
pthread_mutex_init(&publishLock, NULL);
connect();
}
RabbitMQHandler::~RabbitMQHandler()
{
pthread_mutex_destroy(&publishLock);
disconnect();
}
void RabbitMQHandler::publish(void *message,
const int length)
throw(rabbitmq_handler_exception)
{
pthread_mutex_lock(&publishLock);
amqp_bytes_t b;
b.bytes= message;
b.len= length;
if (amqp_basic_publish(rabbitmqConnection,
1,
amqp_cstring_bytes(exchange.c_str()),
amqp_cstring_bytes(routingKey.c_str()),
0,
0,
NULL,
b) < 0)
{
pthread_mutex_unlock(&publishLock);
throw rabbitmq_handler_exception("Could not publish message");
}
pthread_mutex_unlock(&publishLock);
}
void RabbitMQHandler::reconnect() throw(rabbitmq_handler_exception)
{
disconnect();
connect();
}
void RabbitMQHandler::disconnect() throw(rabbitmq_handler_exception)
{
try
{
handleAMQPError(amqp_channel_close(rabbitmqConnection,
1,
AMQP_REPLY_SUCCESS),
"close channel");
handleAMQPError(amqp_connection_close(rabbitmqConnection,
AMQP_REPLY_SUCCESS),
"close connection");
amqp_destroy_connection(rabbitmqConnection);
}
catch(exception& e) {} // do not throw in destructorn
close(sockfd);
}
void RabbitMQHandler::connect() throw(rabbitmq_handler_exception) {
sockfd = amqp_open_socket(hostname.c_str(), port);
if(sockfd < 0)
{
throw rabbitmq_handler_exception(_("Could not open socket, is rabbitmq running?"));
}
amqp_set_sockfd(rabbitmqConnection, sockfd);
/* login to rabbitmq, handleAMQPError throws exception if there is a problem */
handleAMQPError(amqp_login(rabbitmqConnection,
virtualhost.c_str(),
0,
131072,
0,
AMQP_SASL_METHOD_PLAIN,
username.c_str(),
password.c_str()),
"rabbitmq login");
/* open the channel */
amqp_channel_open(rabbitmqConnection, 1);
handleAMQPError(amqp_get_rpc_reply(rabbitmqConnection), "RPC Reply");
amqp_table_t empty_table = { 0, NULL }; // for users of old librabbitmq users - amqp_empty_table did not exist
amqp_exchange_declare(rabbitmqConnection, 1, amqp_cstring_bytes(exchange.c_str()), amqp_cstring_bytes("fanout"), 0, 0, empty_table);
handleAMQPError(amqp_get_rpc_reply(rabbitmqConnection), "RPC Reply");
}
void RabbitMQHandler::handleAMQPError(amqp_rpc_reply_t x, string context) throw(rabbitmq_handler_exception)
{
string errorMessage("");
switch (x.reply_type) {
case AMQP_RESPONSE_NORMAL:
break;
case AMQP_RESPONSE_NONE:
errorMessage.assign("No response in ");
errorMessage.append(context);
throw rabbitmq_handler_exception(errorMessage);
case AMQP_RESPONSE_LIBRARY_EXCEPTION:
case AMQP_RESPONSE_SERVER_EXCEPTION:
switch (x.reply.id) {
case AMQP_CONNECTION_CLOSE_METHOD:
errorMessage.assign("Connection closed in ");
errorMessage.append(context);
throw rabbitmq_handler_exception(errorMessage);
case AMQP_CHANNEL_CLOSE_METHOD:
errorMessage.assign("Channel closed in ");
errorMessage.append(context);
throw rabbitmq_handler_exception(errorMessage);
default:
errorMessage.assign("Unknown error in ");
errorMessage.append(context);
throw rabbitmq_handler_exception(errorMessage);
}
}
}
} /* namespace drizzle_plugin */
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