session management implemented

1 files changed, 96 insertions, 0 deletions

diff --git a/src/zmq_listener_init.cpp b/src/zmq_listener_init.cpp
new file mode 100644
index 0000000..bfd79b4
--- /dev/null
+++ b/src/zmq_listener_init.cpp
@@ -0,0 +1,96 @@
+/*
+    Copyright (c) 2007-2009 FastMQ Inc.
+
+    This file is part of 0MQ.
+
+    0MQ is free software; you can redistribute it and/or modify it under
+    the terms of the Lesser GNU General Public License as published by
+    the Free Software Foundation; either version 3 of the License, or
+    (at your option) any later version.
+
+    0MQ 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
+    Lesser GNU General Public License for more details.
+
+    You should have received a copy of the Lesser GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include <string>
+
+#include "zmq_listener_init.hpp"
+#include "io_thread.hpp"
+#include "session.hpp"
+#include "err.hpp"
+
+zmq::zmq_listener_init_t::zmq_listener_init_t (io_thread_t *parent_,
+      socket_base_t *owner_, fd_t fd_, const options_t &options_) :
+    owned_t (parent_, owner_),
+    options (options_)
+{
+    //  Create associated engine object.
+    engine = new zmq_engine_t (parent_, fd_);
+    zmq_assert (engine);
+}
+
+zmq::zmq_listener_init_t::~zmq_listener_init_t ()
+{
+    if (engine)
+        delete engine;
+}
+
+bool zmq::zmq_listener_init_t::read (::zmq_msg_t *msg_)
+{
+    return false;
+}
+
+bool zmq::zmq_listener_init_t::write (::zmq_msg_t *msg_)
+{
+    //  Retreieve the remote identity. We'll use it as a local session name.
+    std::string session_name = std::string ((const char*) zmq_msg_data (msg_),
+        zmq_msg_size (msg_));
+
+    //  Initialisation is done. Disconnect the engine from the init object.
+    engine->unplug ();
+
+    //  Have a look whether the session already exists. If it does, attach it
+    //  to the engine. If it doesn't create it first.
+    session_t *session = owner->find_session (session_name.c_str ());
+    if (!session) {
+        io_thread_t *io_thread = choose_io_thread (options.affinity);
+        session = new session_t (io_thread, owner, session_name.c_str ());
+        zmq_assert (session);
+        send_plug (session);
+        send_own (owner, session);
+
+        //  Reserve a sequence number for following 'attach' command.
+        session->inc_seqnum ();
+    }
+    send_attach (session, engine);
+    engine = NULL;
+
+    //  Destroy the init object.
+    term ();
+
+    return true;
+}
+
+void zmq::zmq_listener_init_t::flush ()
+{
+    //  No need to do anything. zmq_listener_init_t does no batching
+    //  of messages. Each message is processed immediately on write.
+}
+
+void zmq::zmq_listener_init_t::process_plug ()
+{
+    zmq_assert (engine);
+    engine->plug (this);
+    owned_t::process_plug ();
+}
+
+void zmq::zmq_listener_init_t::process_unplug ()
+{
+    if (engine)
+        engine->unplug ();
+}