1 /* $Id: filter_frontend_net.cpp,v 1.21 2006-08-30 10:48:52 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;
157 const char *peername = PDU_Observable->getpeername();
159 peername = "unknown";
160 m_origin.set_tcpip_address(std::string(peername), m_session.id());
164 yazpp_1::IPDU_Observer *mp::ZAssocChild::sessionNotify(yazpp_1::IPDU_Observable
165 *the_PDU_Observable, int fd)
170 mp::ZAssocChild::~ZAssocChild()
174 void mp::ZAssocChild::recv_GDU(Z_GDU *z_pdu, int len)
178 mp::Package *p = new mp::Package(m_session, m_origin);
180 mp::ThreadPoolPackage *tp = new mp::ThreadPoolPackage(p, this);
181 p->copy_filter(*m_package);
182 p->request() = yazpp_1::GDU(z_pdu);
183 m_thread_pool_observer->put(tp);
186 void mp::ZAssocChild::failNotify()
188 // TODO: send Package to signal "close"
189 if (m_session.is_closed())
195 mp::Package *p = new mp::Package(m_session, m_origin);
197 mp::ThreadPoolPackage *tp = new mp::ThreadPoolPackage(p, this);
198 p->copy_filter(*m_package);
199 m_thread_pool_observer->put(tp);
202 void mp::ZAssocChild::timeoutNotify()
207 void mp::ZAssocChild::connectNotify()
212 mp::ZAssocServer::ZAssocServer(yazpp_1::IPDU_Observable *PDU_Observable,
213 mp::ThreadPoolSocketObserver *thread_pool_observer,
214 const mp::Package *package)
215 : Z_Assoc(PDU_Observable)
217 m_thread_pool_observer = thread_pool_observer;
222 yazpp_1::IPDU_Observer *mp::ZAssocServer::sessionNotify(yazpp_1::IPDU_Observable
223 *the_PDU_Observable, int fd)
225 mp::ZAssocChild *my =
226 new mp::ZAssocChild(the_PDU_Observable, m_thread_pool_observer,
231 mp::ZAssocServer::~ZAssocServer()
235 void mp::ZAssocServer::recv_GDU(Z_GDU *apdu, int len)
239 void mp::ZAssocServer::failNotify()
243 void mp::ZAssocServer::timeoutNotify()
247 void mp::ZAssocServer::connectNotify()
251 mp::filter::FrontendNet::FrontendNet() : m_p(new Rep)
253 m_p->m_no_threads = 5;
254 m_p->m_listen_duration = 0;
257 mp::filter::FrontendNet::~FrontendNet()
261 bool mp::My_Timer_Thread::timeout()
266 mp::My_Timer_Thread::My_Timer_Thread(yazpp_1::ISocketObservable *obs,
268 m_obs(obs), m_pipe(9123), m_timeout(false)
270 obs->addObserver(m_pipe.read_fd(), this);
271 obs->maskObserver(this, yazpp_1::SOCKET_OBSERVE_READ);
272 obs->timeoutObserver(this, duration);
275 void mp::My_Timer_Thread::socketNotify(int event)
278 m_obs->deleteObserver(this);
281 void mp::filter::FrontendNet::process(Package &package) const
283 if (m_p->m_ports.size() == 0)
286 yazpp_1::SocketManager mySocketManager;
288 My_Timer_Thread *tt = 0;
289 if (m_p->m_listen_duration)
290 tt = new My_Timer_Thread(&mySocketManager, m_p->m_listen_duration);
292 ThreadPoolSocketObserver threadPool(&mySocketManager, m_p->m_no_threads);
294 mp::ZAssocServer **az = new mp::ZAssocServer *[m_p->m_ports.size()];
296 // Create mp::ZAssocServer for each port
298 for (i = 0; i<m_p->m_ports.size(); i++)
300 // create a PDU assoc object (one per mp::ZAssocServer)
301 yazpp_1::PDU_Assoc *as = new yazpp_1::PDU_Assoc(&mySocketManager);
303 // create ZAssoc with PDU Assoc
304 az[i] = new mp::ZAssocServer(as, &threadPool, &package);
305 az[i]->server(m_p->m_ports[i].c_str());
307 while (mySocketManager.processEvent() > 0)
309 if (tt && tt->timeout())
312 for (i = 0; i<m_p->m_ports.size(); i++)
319 void mp::filter::FrontendNet::configure(const xmlNode * ptr)
321 if (!ptr || !ptr->children)
323 throw mp::filter::FilterException("No ports for Frontend");
325 std::vector<std::string> ports;
326 for (ptr = ptr->children; ptr; ptr = ptr->next)
328 if (ptr->type != XML_ELEMENT_NODE)
330 if (!strcmp((const char *) ptr->name, "port"))
332 std::string port = mp::xml::get_text(ptr);
333 ports.push_back(port);
336 else if (!strcmp((const char *) ptr->name, "threads"))
338 std::string threads_str = mp::xml::get_text(ptr);
339 int threads = atoi(threads_str.c_str());
341 throw mp::filter::FilterException("Bad value for threads: "
343 m_p->m_no_threads = threads;
347 throw mp::filter::FilterException("Bad element "
348 + std::string((const char *)
352 m_p->m_ports = ports;
355 std::vector<std::string> &mp::filter::FrontendNet::ports()
360 int &mp::filter::FrontendNet::listen_duration()
362 return m_p->m_listen_duration;
365 static mp::filter::Base* filter_creator()
367 return new mp::filter::FrontendNet;
371 struct metaproxy_1_filter_struct metaproxy_1_filter_frontend_net = {
381 * indent-tabs-mode: nil
382 * c-file-style: "stroustrup"
384 * vim: shiftwidth=4 tabstop=8 expandtab