1 /* $Id: filter_frontend_net.cpp,v 1.23 2007-01-25 14:05:54 adam Exp $
2 Copyright (c) 2005-2007, Index Data.
4 See the LICENSE file for details
12 #include "package.hpp"
13 #include "thread_pool_observer.hpp"
14 #include "filter_frontend_net.hpp"
15 #include <yazpp/z-assoc.h>
16 #include <yazpp/pdu-assoc.h>
17 #include <yazpp/socket-manager.h>
22 namespace mp = metaproxy_1;
24 namespace metaproxy_1 {
26 class FrontendNet::Rep {
27 friend class FrontendNet;
29 std::vector<std::string> m_ports;
30 int m_listen_duration;
31 int m_session_timeout;
34 class My_Timer_Thread : public yazpp_1::ISocketObserver {
36 yazpp_1::ISocketObservable *m_obs;
40 My_Timer_Thread(yazpp_1::ISocketObservable *obs, int duration);
41 void socketNotify(int event);
44 class ZAssocChild : public yazpp_1::Z_Assoc {
47 ZAssocChild(yazpp_1::IPDU_Observable *the_PDU_Observable,
48 mp::ThreadPoolSocketObserver *m_thread_pool_observer,
49 const mp::Package *package);
52 yazpp_1::IPDU_Observer* sessionNotify(
53 yazpp_1::IPDU_Observable *the_PDU_Observable,
55 void recv_GDU(Z_GDU *apdu, int len);
61 mp::ThreadPoolSocketObserver *m_thread_pool_observer;
62 mp::Session m_session;
65 const mp::Package *m_package;
67 class ThreadPoolPackage : public mp::IThreadPoolMsg {
69 ThreadPoolPackage(mp::Package *package, mp::ZAssocChild *ses) :
70 m_session(ses), m_package(package) { };
72 IThreadPoolMsg *handle();
76 mp::ZAssocChild *m_session;
77 mp::Package *m_package;
80 class ZAssocServer : public yazpp_1::Z_Assoc {
83 ZAssocServer(yazpp_1::IPDU_Observable *PDU_Observable,
84 mp::ThreadPoolSocketObserver *m_thread_pool_observer,
85 const mp::Package *package,
88 yazpp_1::IPDU_Observer* sessionNotify(
89 yazpp_1::IPDU_Observable *the_PDU_Observable,
91 void recv_GDU(Z_GDU *apdu, int len);
97 mp::ThreadPoolSocketObserver *m_thread_pool_observer;
98 const mp::Package *m_package;
99 int m_session_timeout;
103 mp::ThreadPoolPackage::~ThreadPoolPackage()
108 void mp::ThreadPoolPackage::result()
110 m_session->m_no_requests--;
112 yazpp_1::GDU *gdu = &m_package->response();
117 m_session->send_GDU(gdu->get(), &len);
119 else if (!m_package->session().is_closed())
121 // no response package and yet the session is still open..
122 // means that request is unhandled..
123 yazpp_1::GDU *gdu_req = &m_package->request();
124 Z_GDU *z_gdu = gdu_req->get();
125 if (z_gdu && z_gdu->which == Z_GDU_Z3950)
127 // For Z39.50, response with a Close and shutdown
130 Z_APDU *apdu_response = odr.create_close(
131 z_gdu->u.z3950, Z_Close_systemProblem,
132 "unhandled Z39.50 request");
134 m_session->send_Z_PDU(apdu_response, &len);
135 m_package->session().close();
139 if (m_session->m_no_requests == 0 && m_package->session().is_closed())
144 mp::IThreadPoolMsg *mp::ThreadPoolPackage::handle()
151 mp::ZAssocChild::ZAssocChild(yazpp_1::IPDU_Observable *PDU_Observable,
152 mp::ThreadPoolSocketObserver *my_thread_pool,
153 const mp::Package *package)
154 : Z_Assoc(PDU_Observable)
156 m_thread_pool_observer = my_thread_pool;
158 m_delete_flag = false;
160 const char *peername = PDU_Observable->getpeername();
162 peername = "unknown";
163 m_origin.set_tcpip_address(std::string(peername), m_session.id());
167 yazpp_1::IPDU_Observer *mp::ZAssocChild::sessionNotify(yazpp_1::IPDU_Observable
168 *the_PDU_Observable, int fd)
173 mp::ZAssocChild::~ZAssocChild()
177 void mp::ZAssocChild::recv_GDU(Z_GDU *z_pdu, int len)
181 mp::Package *p = new mp::Package(m_session, m_origin);
183 mp::ThreadPoolPackage *tp = new mp::ThreadPoolPackage(p, this);
184 p->copy_filter(*m_package);
185 p->request() = yazpp_1::GDU(z_pdu);
186 m_thread_pool_observer->put(tp);
189 void mp::ZAssocChild::failNotify()
191 // TODO: send Package to signal "close"
192 if (m_session.is_closed())
198 mp::Package *p = new mp::Package(m_session, m_origin);
200 mp::ThreadPoolPackage *tp = new mp::ThreadPoolPackage(p, this);
201 p->copy_filter(*m_package);
202 m_thread_pool_observer->put(tp);
205 void mp::ZAssocChild::timeoutNotify()
210 void mp::ZAssocChild::connectNotify()
215 mp::ZAssocServer::ZAssocServer(yazpp_1::IPDU_Observable *PDU_Observable,
216 mp::ThreadPoolSocketObserver *thread_pool_observer,
217 const mp::Package *package,
219 : Z_Assoc(PDU_Observable), m_session_timeout(timeout)
221 m_thread_pool_observer = thread_pool_observer;
226 yazpp_1::IPDU_Observer *mp::ZAssocServer::sessionNotify(yazpp_1::IPDU_Observable
227 *the_PDU_Observable, int fd)
229 mp::ZAssocChild *my =
230 new mp::ZAssocChild(the_PDU_Observable, m_thread_pool_observer,
232 my->timeout(m_session_timeout);
236 mp::ZAssocServer::~ZAssocServer()
240 void mp::ZAssocServer::recv_GDU(Z_GDU *apdu, int len)
244 void mp::ZAssocServer::failNotify()
248 void mp::ZAssocServer::timeoutNotify()
252 void mp::ZAssocServer::connectNotify()
256 mp::filter::FrontendNet::FrontendNet() : m_p(new Rep)
258 m_p->m_no_threads = 5;
259 m_p->m_listen_duration = 0;
260 m_p->m_session_timeout = 300; // 5 minutes
263 mp::filter::FrontendNet::~FrontendNet()
267 bool mp::My_Timer_Thread::timeout()
272 mp::My_Timer_Thread::My_Timer_Thread(yazpp_1::ISocketObservable *obs,
274 m_obs(obs), m_pipe(9123), m_timeout(false)
276 obs->addObserver(m_pipe.read_fd(), this);
277 obs->maskObserver(this, yazpp_1::SOCKET_OBSERVE_READ);
278 obs->timeoutObserver(this, duration);
281 void mp::My_Timer_Thread::socketNotify(int event)
284 m_obs->deleteObserver(this);
287 void mp::filter::FrontendNet::process(Package &package) const
289 if (m_p->m_ports.size() == 0)
292 yazpp_1::SocketManager mySocketManager;
294 My_Timer_Thread *tt = 0;
295 if (m_p->m_listen_duration)
296 tt = new My_Timer_Thread(&mySocketManager, m_p->m_listen_duration);
298 ThreadPoolSocketObserver threadPool(&mySocketManager, m_p->m_no_threads);
300 mp::ZAssocServer **az = new mp::ZAssocServer *[m_p->m_ports.size()];
302 // Create mp::ZAssocServer for each port
304 for (i = 0; i<m_p->m_ports.size(); i++)
306 // create a PDU assoc object (one per mp::ZAssocServer)
307 yazpp_1::PDU_Assoc *as = new yazpp_1::PDU_Assoc(&mySocketManager);
309 // create ZAssoc with PDU Assoc
310 az[i] = new mp::ZAssocServer(as, &threadPool, &package,
311 m_p->m_session_timeout);
312 az[i]->server(m_p->m_ports[i].c_str());
314 while (mySocketManager.processEvent() > 0)
316 if (tt && tt->timeout())
319 for (i = 0; i<m_p->m_ports.size(); i++)
326 void mp::filter::FrontendNet::configure(const xmlNode * ptr)
328 if (!ptr || !ptr->children)
330 throw mp::filter::FilterException("No ports for Frontend");
332 std::vector<std::string> ports;
333 for (ptr = ptr->children; ptr; ptr = ptr->next)
335 if (ptr->type != XML_ELEMENT_NODE)
337 if (!strcmp((const char *) ptr->name, "port"))
339 std::string port = mp::xml::get_text(ptr);
340 ports.push_back(port);
343 else if (!strcmp((const char *) ptr->name, "threads"))
345 std::string threads_str = mp::xml::get_text(ptr);
346 int threads = atoi(threads_str.c_str());
348 throw mp::filter::FilterException("Bad value for threads: "
350 m_p->m_no_threads = threads;
352 else if (!strcmp((const char *) ptr->name, "timeout"))
354 std::string timeout_str = mp::xml::get_text(ptr);
355 int timeout = atoi(timeout_str.c_str());
357 throw mp::filter::FilterException("Bad value for timeout: "
359 m_p->m_session_timeout = timeout;
363 throw mp::filter::FilterException("Bad element "
364 + std::string((const char *)
368 m_p->m_ports = ports;
371 std::vector<std::string> &mp::filter::FrontendNet::ports()
376 int &mp::filter::FrontendNet::listen_duration()
378 return m_p->m_listen_duration;
381 static mp::filter::Base* filter_creator()
383 return new mp::filter::FrontendNet;
387 struct metaproxy_1_filter_struct metaproxy_1_filter_frontend_net = {
397 * indent-tabs-mode: nil
398 * c-file-style: "stroustrup"
400 * vim: shiftwidth=4 tabstop=8 expandtab