1 /* $Id: filter_z3950_client.cpp,v 1.10 2005-11-03 14:45:16 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);
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), m_connected(false),
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()
119 m_package->response() = odr.create_close(Z_Close_lackOfActivity, 0);
120 m_package->session().close();
124 void yf::Z3950Client::Assoc::recv_GDU(Z_GDU *gdu, int len)
129 m_package->response() = gdu;
132 yazpp_1::IPDU_Observer *yf::Z3950Client::Assoc::sessionNotify(
133 yazpp_1::IPDU_Observable *the_PDU_Observable,
140 yf::Z3950Client::Z3950Client() : m_p(new yf::Z3950Client::Rep)
144 yf::Z3950Client::~Z3950Client() {
147 yf::Z3950Client::Assoc *yf::Z3950Client::Rep::get_assoc(Package &package)
149 // only one thread messes with the clients list at a time
150 boost::mutex::scoped_lock lock(m_mutex);
152 std::map<yp2::Session,yf::Z3950Client::Assoc *>::iterator it;
156 it = m_clients.find(package.session());
157 if (it == m_clients.end())
160 if (!it->second->m_in_use)
162 it->second->m_in_use = true;
165 m_cond_session_ready.wait(lock);
168 // only deal with Z39.50
169 Z_GDU *gdu = package.request().get();
171 if (!gdu || gdu->which != Z_GDU_Z3950)
176 Z_APDU *apdu = gdu->u.z3950;
178 // new Z39.50 session ..
180 // check that it is init. If not, close
181 if (apdu->which != Z_APDU_initRequest)
185 package.response() = odr.create_close(Z_Close_protocolError,
186 "no init request for session");
187 package.session().close();
190 // check virtual host
192 yaz_oi_get_string_oidval(&apdu->u.initRequest->otherInfo,
197 package.response() = odr.create_initResponse(
198 YAZ_BIB1_INIT_NEGOTIATION_OPTION_REQUIRED,
199 "Virtual host not given");
201 package.session().close();
205 yazpp_1::SocketManager *sm = new yazpp_1::SocketManager;
206 yazpp_1::PDU_Assoc *pdu_as = new yazpp_1::PDU_Assoc(sm);
207 yf::Z3950Client::Assoc *as = new yf::Z3950Client::Assoc(sm, pdu_as, vhost);
208 m_clients[package.session()] = as;
212 void yf::Z3950Client::Rep::send_and_receive(Package &package,
213 yf::Z3950Client::Assoc *c)
215 Z_GDU *gdu = package.request().get();
217 if (!gdu || gdu->which != Z_GDU_Z3950)
220 c->m_package = &package;
224 c->client(c->m_host.c_str());
226 while (c->m_waiting && c->m_socket_manager->processEvent() > 0)
237 // relay the package ..
239 c->send_GDU(gdu, &len);
241 while (c->m_waiting && c->m_socket_manager->processEvent() > 0)
245 void yf::Z3950Client::Rep::release_assoc(Package &package)
247 boost::mutex::scoped_lock lock(m_mutex);
248 std::map<yp2::Session,yf::Z3950Client::Assoc *>::iterator it;
250 it = m_clients.find(package.session());
251 if (it != m_clients.end())
253 if (package.session().is_closed())
255 // the Z_Assoc and PDU_Assoc must be destroyed before
256 // the socket manager.. so pull that out.. first..
257 yazpp_1::SocketManager *s = it->second->m_socket_manager;
258 delete it->second; // destroy Z_Assoc
259 delete s; // then manager
264 it->second->m_in_use = false;
266 m_cond_session_ready.notify_all();
270 void yf::Z3950Client::process(Package &package) const
272 yf::Z3950Client::Assoc *c = m_p->get_assoc(package);
275 m_p->send_and_receive(package, c);
277 m_p->release_assoc(package);
284 * indent-tabs-mode: nil
285 * c-file-style: "stroustrup"
287 * vim: shiftwidth=4 tabstop=8 expandtab