1 /* $Id: filter_z3950_client.cpp,v 1.8 2005-10-30 17:13:36 adam Exp $
2 Copyright (c) 2005, Index Data.
12 #include "package.hpp"
14 #include <boost/thread/mutex.hpp>
15 #include <boost/thread/condition.hpp>
18 #include "filter_z3950_client.hpp"
22 #include <yaz/otherinfo.h>
23 #include <yaz/diagbib1.h>
25 #include <yaz++/socket-manager.h>
26 #include <yaz++/pdu-assoc.h>
27 #include <yaz++/z-assoc.h>
31 namespace yf = yp2::filter;
35 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 // yp2::Session m_session_id;
51 yazpp_1::SocketManager *m_socket_manager;
52 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);
74 yf::Z3950Client::Assoc::Assoc(yazpp_1::SocketManager *socket_manager,
75 yazpp_1::IPDU_Observable *PDU_Observable,
77 : Z_Assoc(PDU_Observable),
78 m_socket_manager(socket_manager), m_PDU_Observable(PDU_Observable),
79 m_package(0), m_in_use(true), m_waiting(false), m_connected(false),
82 // std::cout << "create assoc " << this << "\n";
85 yf::Z3950Client::Assoc::~Assoc()
87 // std::cout << "destroy assoc " << this << "\n";
90 void yf::Z3950Client::Assoc::connectNotify()
97 void yf::Z3950Client::Assoc::failNotify()
103 Z_APDU *apdu = zget_APDU(odr, Z_APDU_close);
105 *apdu->u.close->closeReason = Z_Close_peerAbort;
109 m_package->response() = apdu;
110 m_package->session().close();
114 void yf::Z3950Client::Assoc::timeoutNotify()
120 Z_APDU *apdu = zget_APDU(odr, Z_APDU_close);
122 *apdu->u.close->closeReason = Z_Close_lackOfActivity;
126 m_package->response() = apdu;
127 m_package->session().close();
131 void yf::Z3950Client::Assoc::recv_GDU(Z_GDU *gdu, int len)
136 m_package->response() = gdu;
139 yazpp_1::IPDU_Observer *yf::Z3950Client::Assoc::sessionNotify(
140 yazpp_1::IPDU_Observable *the_PDU_Observable,
147 yf::Z3950Client::Z3950Client() : m_p(new yf::Z3950Client::Rep)
151 yf::Z3950Client::~Z3950Client() {
154 yf::Z3950Client::Assoc *yf::Z3950Client::Rep::get_assoc(Package &package)
156 // only one thread messes with the clients list at a time
157 boost::mutex::scoped_lock lock(m_mutex);
159 std::map<yp2::Session,yf::Z3950Client::Assoc *>::iterator it;
163 it = m_clients.find(package.session());
164 if (it == m_clients.end())
167 if (!it->second->m_in_use)
169 it->second->m_in_use = true;
172 m_cond_session_ready.wait(lock);
175 // only deal with Z39.50
176 Z_GDU *gdu = package.request().get();
178 if (!gdu || gdu->which != Z_GDU_Z3950)
183 Z_APDU *apdu = gdu->u.z3950;
185 // new Z39.50 session ..
187 // check that it is init. If not, close
188 if (apdu->which != Z_APDU_initRequest)
191 Z_APDU *apdu = zget_APDU(odr, Z_APDU_close);
193 *apdu->u.close->closeReason = Z_Close_protocolError;
194 apdu->u.close->diagnosticInformation =
195 odr_strdup(odr, "no init request for session");
197 package.response() = apdu;
199 package.session().close();
202 // check virtual host
204 yaz_oi_get_string_oidval(&apdu->u.initRequest->otherInfo,
209 Z_APDU *apdu = zget_APDU(odr, Z_APDU_initResponse);
211 apdu->u.initResponse->userInformationField =
212 zget_init_diagnostics(odr,
213 YAZ_BIB1_INIT_NEGOTIATION_OPTION_REQUIRED,
214 "Virtual host not given");
215 package.response() = apdu;
217 package.session().close();
221 yazpp_1::SocketManager *sm = new yazpp_1::SocketManager;
222 yazpp_1::PDU_Assoc *pdu_as = new yazpp_1::PDU_Assoc(sm);
223 yf::Z3950Client::Assoc *as = new yf::Z3950Client::Assoc(sm, pdu_as, vhost);
224 m_clients[package.session()] = as;
228 void yf::Z3950Client::Rep::send_and_receive(Package &package,
229 yf::Z3950Client::Assoc *c)
231 Z_GDU *gdu = package.request().get();
233 if (!gdu || gdu->which != Z_GDU_Z3950)
236 c->m_package = &package;
240 c->client(c->m_host.c_str());
242 while (c->m_waiting && c->m_socket_manager->processEvent() > 0)
253 // relay the package ..
255 c->send_GDU(gdu, &len);
257 while (c->m_waiting && c->m_socket_manager->processEvent() > 0)
261 void yf::Z3950Client::Rep::release_assoc(Package &package)
263 boost::mutex::scoped_lock lock(m_mutex);
264 std::map<yp2::Session,yf::Z3950Client::Assoc *>::iterator it;
266 it = m_clients.find(package.session());
267 if (it != m_clients.end())
269 if (package.session().is_closed())
271 // the Z_Assoc and PDU_Assoc must be destroyed before
272 // the socket manager.. so pull that out.. first..
273 yazpp_1::SocketManager *s = it->second->m_socket_manager;
274 delete it->second; // destroy Z_Assoc
275 delete s; // then manager
280 it->second->m_in_use = false;
282 m_cond_session_ready.notify_all();
286 void yf::Z3950Client::process(Package &package) const
288 yf::Z3950Client::Assoc *c = m_p->get_assoc(package);
291 m_p->send_and_receive(package, c);
293 m_p->release_assoc(package);
300 * indent-tabs-mode: nil
301 * c-file-style: "stroustrup"
303 * vim: shiftwidth=4 tabstop=8 expandtab