~drizzle-trunk/drizzle/development

/* - 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 "rabbitmq_handler.h"

using namespace std;

RabbitMQHandler::RabbitMQHandler(const char* rabbitMQHost, 

				 const int rabbitMQPort, 

				 const char* rabbitMQUsername, 

				 const char* rabbitMQPassword, 

				 const char* rabbitMQVirtualhost) 

  throw(rabbitmq_handler_exception):

  hostname(rabbitMQHost),

  port(rabbitMQPort),

  username(rabbitMQUsername),

  password(rabbitMQPassword),

  virtualhost(rabbitMQVirtualhost)

{

  rabbitmqConnection = amqp_new_connection();

  /* open the socket to the rabbitmq server */

  sockfd = amqp_open_socket(hostname, 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, 

			     0, 

			     131072, 

			     0, 

			     AMQP_SASL_METHOD_PLAIN, 

			     username, 

			     password), 

		  "rabbitmq login");

  /* open the channel */

  amqp_channel_open(rabbitmqConnection, 1);

}

RabbitMQHandler::~RabbitMQHandler()

{

  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::publish(const uint8_t *message, 

			      const int length, 

			      const char* exchangeName, 

			      const char* routingKey) throw(rabbitmq_handler_exception)

{

  amqp_bytes_t b;

  b.bytes= (void*)message;

  b.len= length;

  if(amqp_basic_publish(rabbitmqConnection,

			1,

			amqp_cstring_bytes(exchangeName),

			amqp_cstring_bytes(routingKey),

			0,

			0,

			NULL,

			b) < 0)

  {

    throw rabbitmq_handler_exception("Could not publish message");

  }

}

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);

    }

  }

}