1 /* $Id: filter_frontend_net.cpp,v 1.19 2006-06-10 14:29:12 adam Exp $
2 Copyright (c) 2005-2006, 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;
33 class My_Timer_Thread : public yazpp_1::ISocketObserver {
35 yazpp_1::ISocketObservable *m_obs;
39 My_Timer_Thread(yazpp_1::ISocketObservable *obs, int duration);
40 void socketNotify(int event);
43 class ZAssocChild : public yazpp_1::Z_Assoc {
46 ZAssocChild(yazpp_1::IPDU_Observable *the_PDU_Observable,
47 mp::ThreadPoolSocketObserver *m_thread_pool_observer,
48 const mp::Package *package);
51 yazpp_1::IPDU_Observer* sessionNotify(
52 yazpp_1::IPDU_Observable *the_PDU_Observable,
54 void recv_GDU(Z_GDU *apdu, int len);
60 mp::ThreadPoolSocketObserver *m_thread_pool_observer;
61 mp::Session m_session;
64 const mp::Package *m_package;
66 class ThreadPoolPackage : public mp::IThreadPoolMsg {
68 ThreadPoolPackage(mp::Package *package, mp::ZAssocChild *ses) :
69 m_session(ses), m_package(package) { };
71 IThreadPoolMsg *handle();
75 mp::ZAssocChild *m_session;
76 mp::Package *m_package;
79 class ZAssocServer : public yazpp_1::Z_Assoc {
82 ZAssocServer(yazpp_1::IPDU_Observable *PDU_Observable,
83 mp::ThreadPoolSocketObserver *m_thread_pool_observer,
84 const mp::Package *package);
86 yazpp_1::IPDU_Observer* sessionNotify(
87 yazpp_1::IPDU_Observable *the_PDU_Observable,
89 void recv_GDU(Z_GDU *apdu, int len);
95 mp::ThreadPoolSocketObserver *m_thread_pool_observer;
96 const mp::Package *m_package;
100 mp::ThreadPoolPackage::~ThreadPoolPackage()
105 void mp::ThreadPoolPackage::result()
107 m_session->m_no_requests--;
109 yazpp_1::GDU *gdu = &m_package->response();
114 m_session->send_GDU(gdu->get(), &len);
116 else if (!m_package->session().is_closed())
118 // no response package and yet the session is still open..
119 // means that request is unhandled..
120 yazpp_1::GDU *gdu_req = &m_package->request();
121 Z_GDU *z_gdu = gdu_req->get();
122 if (z_gdu && z_gdu->which == Z_GDU_Z3950)
124 // For Z39.50, response with a Close and shutdown
127 Z_APDU *apdu_response = odr.create_close(
128 z_gdu->u.z3950, Z_Close_systemProblem,
129 "unhandled Z39.50 request");
131 m_session->send_Z_PDU(apdu_response, &len);
132 m_package->session().close();
136 if (m_session->m_no_requests == 0 && m_package->session().is_closed())
141 mp::IThreadPoolMsg *mp::ThreadPoolPackage::handle()
148 mp::ZAssocChild::ZAssocChild(yazpp_1::IPDU_Observable *PDU_Observable,
149 mp::ThreadPoolSocketObserver *my_thread_pool,
150 const mp::Package *package)
151 : Z_Assoc(PDU_Observable)
153 m_thread_pool_observer = my_thread_pool;
155 m_delete_flag = false;
160 yazpp_1::IPDU_Observer *mp::ZAssocChild::sessionNotify(yazpp_1::IPDU_Observable
161 *the_PDU_Observable, int fd)
166 mp::ZAssocChild::~ZAssocChild()
170 void mp::ZAssocChild::recv_GDU(Z_GDU *z_pdu, int len)
174 mp::Package *p = new mp::Package(m_session, m_origin);
176 mp::ThreadPoolPackage *tp = new mp::ThreadPoolPackage(p, this);
177 p->copy_filter(*m_package);
178 p->request() = yazpp_1::GDU(z_pdu);
179 m_thread_pool_observer->put(tp);
182 void mp::ZAssocChild::failNotify()
184 // TODO: send Package to signal "close"
185 if (m_session.is_closed())
191 mp::Package *p = new mp::Package(m_session, m_origin);
193 mp::ThreadPoolPackage *tp = new mp::ThreadPoolPackage(p, this);
194 p->copy_filter(*m_package);
195 m_thread_pool_observer->put(tp);
198 void mp::ZAssocChild::timeoutNotify()
203 void mp::ZAssocChild::connectNotify()
208 mp::ZAssocServer::ZAssocServer(yazpp_1::IPDU_Observable *PDU_Observable,
209 mp::ThreadPoolSocketObserver *thread_pool_observer,
210 const mp::Package *package)
211 : Z_Assoc(PDU_Observable)
213 m_thread_pool_observer = thread_pool_observer;
218 yazpp_1::IPDU_Observer *mp::ZAssocServer::sessionNotify(yazpp_1::IPDU_Observable
219 *the_PDU_Observable, int fd)
221 mp::ZAssocChild *my =
222 new mp::ZAssocChild(the_PDU_Observable, m_thread_pool_observer,
227 mp::ZAssocServer::~ZAssocServer()
231 void mp::ZAssocServer::recv_GDU(Z_GDU *apdu, int len)
235 void mp::ZAssocServer::failNotify()
239 void mp::ZAssocServer::timeoutNotify()
243 void mp::ZAssocServer::connectNotify()
247 mp::filter::FrontendNet::FrontendNet() : m_p(new Rep)
249 m_p->m_no_threads = 5;
250 m_p->m_listen_duration = 0;
253 mp::filter::FrontendNet::~FrontendNet()
257 bool mp::My_Timer_Thread::timeout()
262 mp::My_Timer_Thread::My_Timer_Thread(yazpp_1::ISocketObservable *obs,
264 m_obs(obs), m_pipe(9123), m_timeout(false)
266 obs->addObserver(m_pipe.read_fd(), this);
267 obs->maskObserver(this, yazpp_1::SOCKET_OBSERVE_READ);
268 obs->timeoutObserver(this, duration);
271 void mp::My_Timer_Thread::socketNotify(int event)
274 m_obs->deleteObserver(this);
277 void mp::filter::FrontendNet::process(Package &package) const
279 if (m_p->m_ports.size() == 0)
282 yazpp_1::SocketManager mySocketManager;
284 My_Timer_Thread *tt = 0;
285 if (m_p->m_listen_duration)
286 tt = new My_Timer_Thread(&mySocketManager, m_p->m_listen_duration);
288 ThreadPoolSocketObserver threadPool(&mySocketManager, m_p->m_no_threads);
290 mp::ZAssocServer **az = new mp::ZAssocServer *[m_p->m_ports.size()];
292 // Create mp::ZAssocServer for each port
294 for (i = 0; i<m_p->m_ports.size(); i++)
296 // create a PDU assoc object (one per mp::ZAssocServer)
297 yazpp_1::PDU_Assoc *as = new yazpp_1::PDU_Assoc(&mySocketManager);
299 // create ZAssoc with PDU Assoc
300 az[i] = new mp::ZAssocServer(as, &threadPool, &package);
301 az[i]->server(m_p->m_ports[i].c_str());
303 while (mySocketManager.processEvent() > 0)
305 if (tt && tt->timeout())
308 for (i = 0; i<m_p->m_ports.size(); i++)
315 void mp::filter::FrontendNet::configure(const xmlNode * ptr)
317 if (!ptr || !ptr->children)
319 throw mp::filter::FilterException("No ports for Frontend");
321 std::vector<std::string> ports;
322 for (ptr = ptr->children; ptr; ptr = ptr->next)
324 if (ptr->type != XML_ELEMENT_NODE)
326 if (!strcmp((const char *) ptr->name, "port"))
328 std::string port = mp::xml::get_text(ptr);
329 ports.push_back(port);
332 else if (!strcmp((const char *) ptr->name, "threads"))
334 std::string threads_str = mp::xml::get_text(ptr);
335 int threads = atoi(threads_str.c_str());
337 throw mp::filter::FilterException("Bad value for threads: "
339 m_p->m_no_threads = threads;
343 throw mp::filter::FilterException("Bad element "
344 + std::string((const char *)
348 m_p->m_ports = ports;
351 std::vector<std::string> &mp::filter::FrontendNet::ports()
356 int &mp::filter::FrontendNet::listen_duration()
358 return m_p->m_listen_duration;
361 static mp::filter::Base* filter_creator()
363 return new mp::filter::FrontendNet;
367 struct metaproxy_1_filter_struct metaproxy_1_filter_frontend_net = {
377 * indent-tabs-mode: nil
378 * c-file-style: "stroustrup"
380 * vim: shiftwidth=4 tabstop=8 expandtab