Scale Stack 0.3 Developer Documentation

scalestack/network/local/stream/listener_service.cc

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/*
 * Scale Stack
 *
 * Copyright 2010 Eric Day
 *
 * 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
 *
 *     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.
 */

#include "config.h"

#include <memory>
#include <netdb.h>
#include <sys/socket.h>
#include <sys/types.h>
#include <sys/un.h>

#include <scalestack/kernel/module.h>
#include <scalestack/kernel/option.h>
#include <scalestack/network/local/local.h>
#include <scalestack/network/local/stream/listener.h>
#include <scalestack/network/local/stream/listener_service.h>
#include <scalestack/network/stream_service.h>

using namespace std;

namespace scalestack
{
namespace network
{
namespace local
{
namespace stream
{

/*
 * Public methods.
 */

void listener_service::options(kernel::module& module,
                               const std::string& addresses)
{
  module.add_option("addresses", _("List of local sockets to listen on."),
                    "SOCKET[,SOCKET]...", addresses);
  module.add_option("backlog", _("Backlog value to use for listen(2)."),
                    "BACKLOG", "64");
}

listener_service::listener_service(kernel::module& module,
  std::auto_ptr<stream_service_provider> stream_service_provider):
  network::listener_service(module, stream_service_provider)
{
}

listener_service::~listener_service()
{
  _handler_service.stop();
}

void listener_service::add_listeners(void)
{
  add_listeners(_module.get_option("addresses").get_value());
}

void listener_service::add_listeners(const std::string& addresses)
{
  string::size_type current = 0;

  do
  {
    string::size_type next = addresses.find_first_of(",", current);
    string address = addresses.substr(current, next - current);

    struct addrinfo addrinfo;
    struct sockaddr_un sockaddr;
    set_address(addrinfo, sockaddr, SOCK_STREAM, address);

    auto_ptr<listener> new_listener(
      new listener(_handler_service,
                   addrinfo,
                   _module.get_option("backlog").get_int_value(),
                   *_stream_service_provider,
                   address));
    _module.log_notice(_("Local stream listener bound to %s"), address.c_str());
    new_listener->start();
    new_listener.release();

    current = addresses.find_first_not_of(",", next);
  }
  while (current != string::npos);
}

} /* namespace stream */
} /* namespace local */
} /* namespace network */
} /* namespace scalestack */

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