1 /* $Id: filter_z3950_client.cpp,v 1.11 2005-11-10 23:10:42 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;
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);
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()
105 m_package->response() = odr.create_close(Z_Close_peerAbort, 0);
106 m_package->session().close();
110 void yf::Z3950Client::Assoc::timeoutNotify()
118 m_package->response() = odr.create_close(Z_Close_lackOfActivity, 0);
119 m_package->session().close();
123 void yf::Z3950Client::Assoc::recv_GDU(Z_GDU *gdu, int len)
128 m_package->response() = gdu;
131 yazpp_1::IPDU_Observer *yf::Z3950Client::Assoc::sessionNotify(
132 yazpp_1::IPDU_Observable *the_PDU_Observable,
139 yf::Z3950Client::Z3950Client() : m_p(new yf::Z3950Client::Rep)
143 yf::Z3950Client::~Z3950Client() {
146 yf::Z3950Client::Assoc *yf::Z3950Client::Rep::get_assoc(Package &package)
148 // only one thread messes with the clients list at a time
149 boost::mutex::scoped_lock lock(m_mutex);
151 std::map<yp2::Session,yf::Z3950Client::Assoc *>::iterator it;
155 it = m_clients.find(package.session());
156 if (it == m_clients.end())
159 if (!it->second->m_in_use)
161 it->second->m_in_use = true;
164 m_cond_session_ready.wait(lock);
167 // only deal with Z39.50
168 Z_GDU *gdu = package.request().get();
170 if (!gdu || gdu->which != Z_GDU_Z3950)
175 Z_APDU *apdu = gdu->u.z3950;
177 // new Z39.50 session ..
179 // check that it is init. If not, close
180 if (apdu->which != Z_APDU_initRequest)
184 package.response() = odr.create_close(Z_Close_protocolError,
185 "no init request for session");
186 package.session().close();
189 // check virtual host
191 yaz_oi_get_string_oidval(&apdu->u.initRequest->otherInfo,
196 package.response() = odr.create_initResponse(
197 YAZ_BIB1_INIT_NEGOTIATION_OPTION_REQUIRED,
198 "Virtual host not given");
200 package.session().close();
204 yazpp_1::SocketManager *sm = new yazpp_1::SocketManager;
205 yazpp_1::PDU_Assoc *pdu_as = new yazpp_1::PDU_Assoc(sm);
206 yf::Z3950Client::Assoc *as = new yf::Z3950Client::Assoc(sm, pdu_as, vhost);
207 m_clients[package.session()] = as;
211 void yf::Z3950Client::Rep::send_and_receive(Package &package,
212 yf::Z3950Client::Assoc *c)
214 Z_GDU *gdu = package.request().get();
216 if (!gdu || gdu->which != Z_GDU_Z3950)
219 c->m_package = &package;
223 c->client(c->m_host.c_str());
225 while (c->m_waiting && c->m_socket_manager->processEvent() > 0)
236 // relay the package ..
238 c->send_GDU(gdu, &len);
240 while (c->m_waiting && c->m_socket_manager->processEvent() > 0)
244 void yf::Z3950Client::Rep::release_assoc(Package &package)
246 boost::mutex::scoped_lock lock(m_mutex);
247 std::map<yp2::Session,yf::Z3950Client::Assoc *>::iterator it;
249 it = m_clients.find(package.session());
250 if (it != m_clients.end())
252 if (package.session().is_closed())
254 // the Z_Assoc and PDU_Assoc must be destroyed before
255 // the socket manager.. so pull that out.. first..
256 yazpp_1::SocketManager *s = it->second->m_socket_manager;
257 delete it->second; // destroy Z_Assoc
258 delete s; // then manager
263 it->second->m_in_use = false;
265 m_cond_session_ready.notify_all();
269 void yf::Z3950Client::process(Package &package) const
271 yf::Z3950Client::Assoc *c = m_p->get_assoc(package);
274 m_p->send_and_receive(package, c);
276 m_p->release_assoc(package);
283 * indent-tabs-mode: nil
284 * c-file-style: "stroustrup"
286 * vim: shiftwidth=4 tabstop=8 expandtab