1 /* $Id: filter_frontend_net.cpp,v 1.26 2008-02-20 15:07:51 adam Exp $
2 Copyright (c) 2005-2008, Index Data.
4 This file is part of Metaproxy.
6 Metaproxy is free software; you can redistribute it and/or modify it under
7 the terms of the GNU General Public License as published by the Free
8 Software Foundation; either version 2, or (at your option) any later
11 Metaproxy is distributed in the hope that it will be useful, but WITHOUT ANY
12 WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
16 You should have received a copy of the GNU General Public License
17 along with Metaproxy; see the file LICENSE. If not, write to the
18 Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA
27 #include "package.hpp"
28 #include "thread_pool_observer.hpp"
29 #include "filter_frontend_net.hpp"
30 #include <yazpp/z-assoc.h>
31 #include <yazpp/pdu-assoc.h>
32 #include <yazpp/socket-manager.h>
37 namespace mp = metaproxy_1;
39 namespace metaproxy_1 {
40 class My_Timer_Thread;
43 class FrontendNet::Rep {
44 friend class FrontendNet;
46 std::vector<std::string> m_ports;
47 int m_listen_duration;
48 int m_session_timeout;
49 yazpp_1::SocketManager mySocketManager;
54 class My_Timer_Thread : public yazpp_1::ISocketObserver {
56 yazpp_1::ISocketObservable *m_obs;
60 My_Timer_Thread(yazpp_1::ISocketObservable *obs, int duration);
61 void socketNotify(int event);
64 class ZAssocChild : public yazpp_1::Z_Assoc {
67 ZAssocChild(yazpp_1::IPDU_Observable *the_PDU_Observable,
68 mp::ThreadPoolSocketObserver *m_thread_pool_observer,
69 const mp::Package *package);
72 yazpp_1::IPDU_Observer* sessionNotify(
73 yazpp_1::IPDU_Observable *the_PDU_Observable,
75 void recv_GDU(Z_GDU *apdu, int len);
81 mp::ThreadPoolSocketObserver *m_thread_pool_observer;
82 mp::Session m_session;
85 const mp::Package *m_package;
87 class ThreadPoolPackage : public mp::IThreadPoolMsg {
89 ThreadPoolPackage(mp::Package *package, mp::ZAssocChild *ses) :
90 m_session(ses), m_package(package) { };
92 IThreadPoolMsg *handle();
96 mp::ZAssocChild *m_session;
97 mp::Package *m_package;
100 class ZAssocServer : public yazpp_1::Z_Assoc {
103 ZAssocServer(yazpp_1::IPDU_Observable *PDU_Observable, int timeout);
104 void set_package(const mp::Package *package);
105 void set_thread_pool(ThreadPoolSocketObserver *m_thread_pool_observer);
107 yazpp_1::IPDU_Observer* sessionNotify(
108 yazpp_1::IPDU_Observable *the_PDU_Observable,
110 void recv_GDU(Z_GDU *apdu, int len);
113 void timeoutNotify();
114 void connectNotify();
116 mp::ThreadPoolSocketObserver *m_thread_pool_observer;
117 const mp::Package *m_package;
118 int m_session_timeout;
122 mp::ThreadPoolPackage::~ThreadPoolPackage()
127 void mp::ThreadPoolPackage::result()
129 m_session->m_no_requests--;
131 yazpp_1::GDU *gdu = &m_package->response();
136 m_session->send_GDU(gdu->get(), &len);
138 else if (!m_package->session().is_closed())
140 // no response package and yet the session is still open..
141 // means that request is unhandled..
142 yazpp_1::GDU *gdu_req = &m_package->request();
143 Z_GDU *z_gdu = gdu_req->get();
144 if (z_gdu && z_gdu->which == Z_GDU_Z3950)
146 // For Z39.50, response with a Close and shutdown
149 Z_APDU *apdu_response = odr.create_close(
150 z_gdu->u.z3950, Z_Close_systemProblem,
151 "unhandled Z39.50 request");
153 m_session->send_Z_PDU(apdu_response, &len);
154 m_package->session().close();
158 if (m_session->m_no_requests == 0 && m_package->session().is_closed())
165 mp::IThreadPoolMsg *mp::ThreadPoolPackage::handle()
172 mp::ZAssocChild::ZAssocChild(yazpp_1::IPDU_Observable *PDU_Observable,
173 mp::ThreadPoolSocketObserver *my_thread_pool,
174 const mp::Package *package)
175 : Z_Assoc(PDU_Observable)
177 m_thread_pool_observer = my_thread_pool;
179 m_delete_flag = false;
181 const char *peername = PDU_Observable->getpeername();
183 peername = "unknown";
184 m_origin.set_tcpip_address(std::string(peername), m_session.id());
188 yazpp_1::IPDU_Observer *mp::ZAssocChild::sessionNotify(yazpp_1::IPDU_Observable
189 *the_PDU_Observable, int fd)
194 mp::ZAssocChild::~ZAssocChild()
198 void mp::ZAssocChild::recv_GDU(Z_GDU *z_pdu, int len)
202 mp::Package *p = new mp::Package(m_session, m_origin);
204 mp::ThreadPoolPackage *tp = new mp::ThreadPoolPackage(p, this);
205 p->copy_filter(*m_package);
206 p->request() = yazpp_1::GDU(z_pdu);
207 m_thread_pool_observer->put(tp);
210 void mp::ZAssocChild::failNotify()
212 // TODO: send Package to signal "close"
213 if (m_session.is_closed())
222 mp::Package *p = new mp::Package(m_session, m_origin);
224 mp::ThreadPoolPackage *tp = new mp::ThreadPoolPackage(p, this);
225 p->copy_filter(*m_package);
226 m_thread_pool_observer->put(tp);
229 void mp::ZAssocChild::timeoutNotify()
234 void mp::ZAssocChild::connectNotify()
239 mp::ZAssocServer::ZAssocServer(yazpp_1::IPDU_Observable *PDU_Observable,
241 : Z_Assoc(PDU_Observable), m_session_timeout(timeout)
247 void mp::ZAssocServer::set_package(const mp::Package *package)
252 void mp::ZAssocServer::set_thread_pool(ThreadPoolSocketObserver *observer)
254 m_thread_pool_observer = observer;
257 yazpp_1::IPDU_Observer *mp::ZAssocServer::sessionNotify(yazpp_1::IPDU_Observable
258 *the_PDU_Observable, int fd)
260 mp::ZAssocChild *my =
261 new mp::ZAssocChild(the_PDU_Observable, m_thread_pool_observer,
263 my->timeout(m_session_timeout);
267 mp::ZAssocServer::~ZAssocServer()
271 void mp::ZAssocServer::recv_GDU(Z_GDU *apdu, int len)
275 void mp::ZAssocServer::failNotify()
279 void mp::ZAssocServer::timeoutNotify()
283 void mp::ZAssocServer::connectNotify()
287 mp::filter::FrontendNet::FrontendNet() : m_p(new Rep)
289 m_p->m_no_threads = 5;
290 m_p->m_listen_duration = 0;
291 m_p->m_session_timeout = 300; // 5 minutes
295 mp::filter::FrontendNet::~FrontendNet()
300 for (i = 0; i<m_p->m_ports.size(); i++)
306 bool mp::My_Timer_Thread::timeout()
311 mp::My_Timer_Thread::My_Timer_Thread(yazpp_1::ISocketObservable *obs,
313 m_obs(obs), m_pipe(9123), m_timeout(false)
315 obs->addObserver(m_pipe.read_fd(), this);
316 obs->maskObserver(this, yazpp_1::SOCKET_OBSERVE_READ);
317 obs->timeoutObserver(this, duration);
320 void mp::My_Timer_Thread::socketNotify(int event)
323 m_obs->deleteObserver(this);
326 void mp::filter::FrontendNet::process(Package &package) const
331 My_Timer_Thread *tt = 0;
333 if (m_p->m_listen_duration)
334 tt = new My_Timer_Thread(&m_p->mySocketManager,
335 m_p->m_listen_duration);
337 ThreadPoolSocketObserver tp(&m_p->mySocketManager, m_p->m_no_threads);
339 for (i = 0; i<m_p->m_ports.size(); i++)
341 m_p->az[i]->set_package(&package);
342 m_p->az[i]->set_thread_pool(&tp);
344 while (m_p->mySocketManager.processEvent() > 0)
346 if (tt && tt->timeout())
352 void mp::filter::FrontendNet::configure(const xmlNode * ptr, bool test_only)
354 if (!ptr || !ptr->children)
356 throw mp::filter::FilterException("No ports for Frontend");
358 std::vector<std::string> ports;
359 for (ptr = ptr->children; ptr; ptr = ptr->next)
361 if (ptr->type != XML_ELEMENT_NODE)
363 if (!strcmp((const char *) ptr->name, "port"))
365 std::string port = mp::xml::get_text(ptr);
366 ports.push_back(port);
369 else if (!strcmp((const char *) ptr->name, "threads"))
371 std::string threads_str = mp::xml::get_text(ptr);
372 int threads = atoi(threads_str.c_str());
374 throw mp::filter::FilterException("Bad value for threads: "
376 m_p->m_no_threads = threads;
378 else if (!strcmp((const char *) ptr->name, "timeout"))
380 std::string timeout_str = mp::xml::get_text(ptr);
381 int timeout = atoi(timeout_str.c_str());
383 throw mp::filter::FilterException("Bad value for timeout: "
385 m_p->m_session_timeout = timeout;
389 throw mp::filter::FilterException("Bad element "
390 + std::string((const char *)
399 void mp::filter::FrontendNet::set_ports(std::vector<std::string> &ports)
401 m_p->m_ports = ports;
403 m_p->az = new mp::ZAssocServer *[m_p->m_ports.size()];
405 // Create mp::ZAssocServer for each port
407 for (i = 0; i<m_p->m_ports.size(); i++)
409 // create a PDU assoc object (one per mp::ZAssocServer)
410 yazpp_1::PDU_Assoc *as = new yazpp_1::PDU_Assoc(&m_p->mySocketManager);
412 // create ZAssoc with PDU Assoc
413 m_p->az[i] = new mp::ZAssocServer(as,
414 m_p->m_session_timeout);
415 if (m_p->az[i]->server(m_p->m_ports[i].c_str()))
417 throw mp::filter::FilterException("Unable to bind to address "
418 + std::string(m_p->m_ports[i]));
423 void mp::filter::FrontendNet::set_listen_duration(int d)
425 m_p->m_listen_duration = d;
428 static mp::filter::Base* filter_creator()
430 return new mp::filter::FrontendNet;
434 struct metaproxy_1_filter_struct metaproxy_1_filter_frontend_net = {
444 * indent-tabs-mode: nil
445 * c-file-style: "stroustrup"
447 * vim: shiftwidth=4 tabstop=8 expandtab