Added example/test application to demonstrate boost asio io_service handler.

This commit is contained in:
zerodefect 2017-10-23 11:40:49 +01:00
parent 5410f1abdd
commit 034e72bbc2
2 changed files with 71 additions and 9 deletions

View File

@ -3,9 +3,11 @@
*
* Implementation for the AMQP::TcpHandler that is optimized for boost::asio. You can
* use this class instead of a AMQP::TcpHandler class, just pass the boost asio service
* to the constructor and you're all set
* to the constructor and you're all set. See tests/libboostasio.cpp for example.
*
* @author Gavin Smith <gavin.smith@coralbay.tv>
*
*
*/
/**
@ -19,9 +21,10 @@
#include <memory>
#include <boost/asio/io_service.hpp>
#include <boost/asio/strand.hpp>
#include <boost/asio/deadline_timer.hpp>
#include <boost/asio/posix/stream_descriptor.hpp>
#include <boost/bind.hpp>
#include <boost/function.hpp>
///////////////////////////////////////////////////////////////////
@ -78,7 +81,7 @@ private:
* @var class boost::asio::io_service&
*/
boost::asio::io_service & _ioservice;
/**
* The boost asio io_service::strand managed pointer.
* @var class std::shared_ptr<boost::asio::io_service>
@ -127,7 +130,7 @@ private:
* @note The handler will get called if a read is cancelled.
*/
void read_handler(const boost::system::error_code &ec,
const std::size_t bytes_transferred,
const std::size_t bytes_transferred,
const std::weak_ptr<Watcher> awpWatcher,
TcpConnection *const connection,
const int fd)
@ -144,8 +147,8 @@ private:
connection->process(fd, AMQP::readable);
_read_pending = true;
_socket.async_read_some(boost::asio::null_buffers(),
_socket.async_read_some(boost::asio::null_buffers(),
STRAND_SOCKET_HANDLER(
boost::bind(&Watcher::read_handler,
this,
@ -313,13 +316,13 @@ private:
* @var class boost::asio::io_service&
*/
boost::asio::io_service & _ioservice;
/**
* The boost asio io_service::strand managed pointer.
* @var class std::shared_ptr<boost::asio::io_service>
*/
std::weak_ptr<boost::asio::io_service::strand> _strand;
/**
* The boost asynchronous deadline timer.
* @var class boost::asio::deadline_timer
@ -483,7 +486,7 @@ private:
std::make_shared<Watcher>(_ioservice, _strand, fd);
_watchers[fd] = apWatcher;
// explicitly set the events to monitor
apWatcher->events(connection, fd, flags);
}

59
tests/libboostasio.cpp Normal file
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@ -0,0 +1,59 @@
/**
* LibBoostAsio.cpp
*
* Test program to check AMQP functionality based on Boost's asio io_service.
*
* @author Gavin Smith <gavin.smith@coralbay.tv>
*
* Compile with g++ libboostasio.cpp -o boost_test -lpthread -lboost_system -lamqpcpp
*/
/**
* Dependencies
*/
#include <boost/asio/io_service.hpp>
#include <boost/asio/strand.hpp>
#include <boost/asio/deadline_timer.hpp>
#include <amqpcpp.h>
#include <amqpcpp/libboostasio.h>
/**
* Main program
* @return int
*/
int main()
{
// access to the boost asio handler
// note: we suggest use of 2 threads - normally one is fin (we are simply demonstrating thread safety).
boost::asio::io_service service(4);
// create a work object to process our events.
boost::asio::io_service::work work(service);
// handler for libev
AMQP::LibBoostAsioHandler handler(service);
// make a connection
AMQP::TcpConnection connection(&handler, AMQP::Address("amqp://guest:guest@localhost/"));
// we need a channel too
AMQP::TcpChannel channel(&connection);
// create a temporary queue
channel.declareQueue(AMQP::exclusive).onSuccess([&connection](const std::string &name, uint32_t messagecount, uint32_t consumercount) {
// report the name of the temporary queue
std::cout << "declared queue " << name << std::endl;
// now we can close the connection
connection.close();
});
// run the handler
// a t the moment, one will need SIGINT to stop. In time, should add signal handling through boost API.
return service.run();
}