1 /* $Id: filter_z3950_client.cpp,v 1.12 2006-01-02 14:33:42 adam Exp $
2 Copyright (c) 2005, Index Data.
11 #include "package.hpp"
13 #include "filter_z3950_client.hpp"
20 #include <boost/thread/mutex.hpp>
21 #include <boost/thread/condition.hpp>
25 #include <yaz/otherinfo.h>
26 #include <yaz/diagbib1.h>
28 #include <yaz++/socket-manager.h>
29 #include <yaz++/pdu-assoc.h>
30 #include <yaz++/z-assoc.h>
32 namespace yf = yp2::filter;
36 class Z3950Client::Assoc : public yazpp_1::Z_Assoc{
38 Assoc(yazpp_1::SocketManager *socket_manager,
39 yazpp_1::IPDU_Observable *PDU_Observable,
45 void recv_GDU(Z_GDU *gdu, int len);
46 yazpp_1::IPDU_Observer* sessionNotify(
47 yazpp_1::IPDU_Observable *the_PDU_Observable,
50 yazpp_1::SocketManager *m_socket_manager;
51 yazpp_1::IPDU_Observable *m_PDU_Observable;
60 class Z3950Client::Rep {
63 boost::condition m_cond_session_ready;
64 std::map<yp2::Session,Z3950Client::Assoc *> m_clients;
65 Z3950Client::Assoc *get_assoc(Package &package);
66 void send_and_receive(Package &package,
67 yf::Z3950Client::Assoc *c);
68 void release_assoc(Package &package);
75 yf::Z3950Client::Assoc::Assoc(yazpp_1::SocketManager *socket_manager,
76 yazpp_1::IPDU_Observable *PDU_Observable,
78 : Z_Assoc(PDU_Observable),
79 m_socket_manager(socket_manager), m_PDU_Observable(PDU_Observable),
80 m_package(0), m_in_use(true), m_waiting(false),
81 m_destroyed(false), m_connected(false), m_host(host)
83 // std::cout << "create assoc " << this << "\n";
86 yf::Z3950Client::Assoc::~Assoc()
88 // std::cout << "destroy assoc " << this << "\n";
91 void yf::Z3950Client::Assoc::connectNotify()
98 void yf::Z3950Client::Assoc::failNotify()
106 m_package->response() = odr.create_close(Z_Close_peerAbort, 0);
107 m_package->session().close();
111 void yf::Z3950Client::Assoc::timeoutNotify()
120 m_package->response() = odr.create_close(Z_Close_lackOfActivity, 0);
121 m_package->session().close();
126 void yf::Z3950Client::Assoc::recv_GDU(Z_GDU *gdu, int len)
131 m_package->response() = gdu;
134 yazpp_1::IPDU_Observer *yf::Z3950Client::Assoc::sessionNotify(
135 yazpp_1::IPDU_Observable *the_PDU_Observable,
142 yf::Z3950Client::Z3950Client() : m_p(new yf::Z3950Client::Rep)
146 yf::Z3950Client::~Z3950Client() {
149 yf::Z3950Client::Assoc *yf::Z3950Client::Rep::get_assoc(Package &package)
151 // only one thread messes with the clients list at a time
152 boost::mutex::scoped_lock lock(m_mutex);
154 std::map<yp2::Session,yf::Z3950Client::Assoc *>::iterator it;
156 Z_GDU *gdu = package.request().get();
157 // only deal with Z39.50
158 if (!gdu || gdu->which != Z_GDU_Z3950)
163 Z_APDU *apdu = gdu->u.z3950;
166 it = m_clients.find(package.session());
167 if (it == m_clients.end())
169 if (gdu && gdu->which == Z_GDU_Z3950 &&
170 gdu->u.z3950->which == Z_APDU_initRequest)
172 yazpp_1::SocketManager *s = it->second->m_socket_manager;
173 delete it->second; // destroy Z_Assoc
174 delete s; // then manager
178 if (!it->second->m_in_use)
180 it->second->m_in_use = true;
183 m_cond_session_ready.wait(lock);
185 // new Z39.50 session ..
187 // check that it is init. If not, close
188 if (apdu->which != Z_APDU_initRequest)
192 package.response() = odr.create_close(Z_Close_protocolError,
193 "First PDU was not an "
194 "Initialize Request");
195 package.session().close();
198 // check virtual host
200 yaz_oi_get_string_oidval(&apdu->u.initRequest->otherInfo,
205 package.response() = odr.create_initResponse(
206 YAZ_BIB1_INIT_NEGOTIATION_OPTION_REQUIRED,
207 "Virtual host not given");
209 package.session().close();
213 yazpp_1::SocketManager *sm = new yazpp_1::SocketManager;
214 yazpp_1::PDU_Assoc *pdu_as = new yazpp_1::PDU_Assoc(sm);
215 yf::Z3950Client::Assoc *as = new yf::Z3950Client::Assoc(sm, pdu_as, vhost);
216 m_clients[package.session()] = as;
221 void yf::Z3950Client::Rep::send_and_receive(Package &package,
222 yf::Z3950Client::Assoc *c)
224 Z_GDU *gdu = package.request().get();
226 if (!gdu || gdu->which != Z_GDU_Z3950)
229 c->m_package = &package;
233 c->client(c->m_host.c_str());
235 while (!c->m_destroyed && c->m_waiting
236 && c->m_socket_manager->processEvent() > 0)
247 // relay the package ..
249 c->send_GDU(gdu, &len);
251 switch(gdu->u.z3950->which)
253 case Z_APDU_triggerResourceControlRequest:
257 // for the rest: wait for a response PDU
258 std::cout << "WAITING...\n";
259 while (!c->m_destroyed && c->m_waiting
260 && c->m_socket_manager->processEvent() > 0)
262 std::cout << "END OF WAITING...\n";
268 void yf::Z3950Client::Rep::release_assoc(Package &package)
270 boost::mutex::scoped_lock lock(m_mutex);
271 std::map<yp2::Session,yf::Z3950Client::Assoc *>::iterator it;
273 it = m_clients.find(package.session());
274 if (it != m_clients.end())
276 if (package.session().is_closed())
277 it->second->m_destroyed = true;
279 if (it->second->m_destroyed && !it->second->m_in_use)
281 // the Z_Assoc and PDU_Assoc must be destroyed before
282 // the socket manager.. so pull that out.. first..
283 yazpp_1::SocketManager *s = it->second->m_socket_manager;
284 delete it->second; // destroy Z_Assoc
285 delete s; // then manager
287 std::cout << "DESTROY " << package.session().id() << "\n";
291 it->second->m_in_use = false;
293 m_cond_session_ready.notify_all();
297 void yf::Z3950Client::process(Package &package) const
299 yf::Z3950Client::Assoc *c = m_p->get_assoc(package);
302 m_p->send_and_receive(package, c);
304 m_p->release_assoc(package);
311 * indent-tabs-mode: nil
312 * c-file-style: "stroustrup"
314 * vim: shiftwidth=4 tabstop=8 expandtab