1 /* $Id: filter_z3950_client.cpp,v 1.7 2005-10-30 16:39:18 adam Exp $
2 Copyright (c) 2005, Index Data.
12 #include "package.hpp"
14 #include <boost/thread/mutex.hpp>
15 #include <boost/thread/condition.hpp>
17 #include "filter_z3950_client.hpp"
21 #include <yaz/otherinfo.h>
22 #include <yaz/diagbib1.h>
24 #include <yaz++/socket-manager.h>
25 #include <yaz++/pdu-assoc.h>
26 #include <yaz++/z-assoc.h>
30 namespace yf = yp2::filter;
34 class Z3950Client::Assoc : public yazpp_1::Z_Assoc{
37 Assoc(yazpp_1::SocketManager *socket_manager,
38 yazpp_1::IPDU_Observable *PDU_Observable,
44 void recv_GDU(Z_GDU *gdu, int len);
45 yazpp_1::IPDU_Observer* sessionNotify(
46 yazpp_1::IPDU_Observable *the_PDU_Observable,
49 // yp2::Session m_session_id;
50 yazpp_1::SocketManager *m_socket_manager;
51 yazpp_1::IPDU_Observable *m_PDU_Observable;
59 class Z3950Client::Rep {
62 boost::condition m_cond_session_ready;
63 std::map<yp2::Session,Z3950Client::Assoc *> m_clients;
64 Z3950Client::Assoc *get_assoc(Package &package);
65 void send_and_receive(Package &package,
66 yf::Z3950Client::Assoc *c);
67 void release_assoc(Package &package);
73 yf::Z3950Client::Assoc::Assoc(yazpp_1::SocketManager *socket_manager,
74 yazpp_1::IPDU_Observable *PDU_Observable,
76 : Z_Assoc(PDU_Observable),
77 m_socket_manager(socket_manager), m_PDU_Observable(PDU_Observable),
78 m_package(0), m_in_use(true), m_waiting(false), m_connected(false),
81 // std::cout << "create assoc " << this << "\n";
84 yf::Z3950Client::Assoc::~Assoc()
86 // std::cout << "destroy assoc " << this << "\n";
89 void yf::Z3950Client::Assoc::connectNotify()
96 void yf::Z3950Client::Assoc::failNotify()
100 ODR odr = odr_createmem(ODR_ENCODE);
102 Z_APDU *apdu = zget_APDU(odr, Z_APDU_close);
104 *apdu->u.close->closeReason = Z_Close_peerAbort;
108 m_package->response() = apdu;
109 m_package->session().close();
115 void yf::Z3950Client::Assoc::timeoutNotify()
119 ODR odr = odr_createmem(ODR_ENCODE);
121 Z_APDU *apdu = zget_APDU(odr, Z_APDU_close);
123 *apdu->u.close->closeReason = Z_Close_lackOfActivity;
127 m_package->response() = apdu;
128 m_package->session().close();
133 void yf::Z3950Client::Assoc::recv_GDU(Z_GDU *gdu, int len)
138 m_package->response() = gdu;
141 yazpp_1::IPDU_Observer *yf::Z3950Client::Assoc::sessionNotify(
142 yazpp_1::IPDU_Observable *the_PDU_Observable,
149 yf::Z3950Client::Z3950Client() : m_p(new yf::Z3950Client::Rep)
153 yf::Z3950Client::~Z3950Client() {
156 yf::Z3950Client::Assoc *yf::Z3950Client::Rep::get_assoc(Package &package)
158 // only one thread messes with the clients list at a time
159 boost::mutex::scoped_lock lock(m_mutex);
161 std::map<yp2::Session,yf::Z3950Client::Assoc *>::iterator it;
165 it = m_clients.find(package.session());
166 if (it == m_clients.end())
169 if (!it->second->m_in_use)
171 it->second->m_in_use = true;
174 m_cond_session_ready.wait(lock);
177 // only deal with Z39.50
178 Z_GDU *gdu = package.request().get();
180 if (!gdu || gdu->which != Z_GDU_Z3950)
185 Z_APDU *apdu = gdu->u.z3950;
187 // new Z39.50 session ..
189 // check that it is init. If not, close
190 if (apdu->which != Z_APDU_initRequest)
192 ODR odr = odr_createmem(ODR_ENCODE);
193 Z_APDU *apdu = zget_APDU(odr, Z_APDU_close);
195 *apdu->u.close->closeReason = Z_Close_protocolError;
196 apdu->u.close->diagnosticInformation =
197 odr_strdup(odr, "no init request for session");
199 package.response() = apdu;
201 package.session().close();
205 // check virtual host
207 yaz_oi_get_string_oidval(&apdu->u.initRequest->otherInfo,
211 ODR odr = odr_createmem(ODR_ENCODE);
212 Z_APDU *apdu = zget_APDU(odr, Z_APDU_initResponse);
214 apdu->u.initResponse->userInformationField =
215 zget_init_diagnostics(odr,
216 YAZ_BIB1_INIT_NEGOTIATION_OPTION_REQUIRED,
217 "Virtual host not given");
218 package.response() = apdu;
220 package.session().close();
225 yazpp_1::SocketManager *sm = new yazpp_1::SocketManager;
226 yazpp_1::PDU_Assoc *pdu_as = new yazpp_1::PDU_Assoc(sm);
227 yf::Z3950Client::Assoc *as = new yf::Z3950Client::Assoc(sm, pdu_as, vhost);
228 m_clients[package.session()] = as;
232 void yf::Z3950Client::Rep::send_and_receive(Package &package,
233 yf::Z3950Client::Assoc *c)
235 Z_GDU *gdu = package.request().get();
237 if (!gdu || gdu->which != Z_GDU_Z3950)
240 c->m_package = &package;
244 c->client(c->m_host.c_str());
246 while (c->m_waiting && c->m_socket_manager->processEvent() > 0)
257 // relay the package ..
259 c->send_GDU(gdu, &len);
261 while (c->m_waiting && c->m_socket_manager->processEvent() > 0)
265 void yf::Z3950Client::Rep::release_assoc(Package &package)
267 boost::mutex::scoped_lock lock(m_mutex);
268 std::map<yp2::Session,yf::Z3950Client::Assoc *>::iterator it;
270 it = m_clients.find(package.session());
271 if (it != m_clients.end())
273 if (package.session().is_closed())
275 // the Z_Assoc and PDU_Assoc must be destroyed before
276 // the socket manager.. so pull that out.. first..
277 yazpp_1::SocketManager *s = it->second->m_socket_manager;
278 delete it->second; // destroy Z_Assoc
279 delete s; // then manager
284 it->second->m_in_use = false;
286 m_cond_session_ready.notify_all();
290 void yf::Z3950Client::process(Package &package) const
292 yf::Z3950Client::Assoc *c = m_p->get_assoc(package);
295 m_p->send_and_receive(package, c);
297 m_p->release_assoc(package);
304 * indent-tabs-mode: nil
305 * c-file-style: "stroustrup"
307 * vim: shiftwidth=4 tabstop=8 expandtab