1 /* This file is part of Metaproxy.
2 Copyright (C) 2005-2012 Index Data
4 Metaproxy is free software; you can redistribute it and/or modify it under
5 the terms of the GNU General Public License as published by the Free
6 Software Foundation; either version 2, or (at your option) any later
9 Metaproxy is distributed in the hope that it will be useful, but WITHOUT ANY
10 WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
23 #include <metaproxy/util.hpp>
25 #include <metaproxy/filter.hpp>
26 #include <metaproxy/package.hpp>
27 #include "thread_pool_observer.hpp"
28 #include "filter_frontend_net.hpp"
29 #include <yazpp/z-assoc.h>
30 #include <yazpp/pdu-assoc.h>
31 #include <yazpp/socket-manager.h>
32 #include <yazpp/limit-connect.h>
33 #include <yaz/timing.h>
35 #include "gduutil.hpp"
39 namespace mp = metaproxy_1;
40 namespace yf = metaproxy_1::filter;
42 namespace metaproxy_1 {
44 class FrontendNet::Port {
46 friend class FrontendNet;
50 class FrontendNet::Rep {
51 friend class FrontendNet;
54 std::vector<Port> m_ports;
55 int m_listen_duration;
56 int m_session_timeout;
58 std::string m_msg_config;
59 std::string m_stat_req;
60 yazpp_1::SocketManager mySocketManager;
62 int m_duration_freq[22];
63 double m_duration_lim[22];
68 class FrontendNet::My_Timer_Thread : public yazpp_1::ISocketObserver {
70 yazpp_1::ISocketObservable *m_obs;
74 My_Timer_Thread(yazpp_1::ISocketObservable *obs, int duration);
75 void socketNotify(int event);
78 class FrontendNet::ZAssocChild : public yazpp_1::Z_Assoc {
81 ZAssocChild(yazpp_1::IPDU_Observable *the_PDU_Observable,
82 mp::ThreadPoolSocketObserver *m_thread_pool_observer,
83 const mp::Package *package,
89 yazpp_1::IPDU_Observer* sessionNotify(
90 yazpp_1::IPDU_Observable *the_PDU_Observable,
92 void recv_GDU(Z_GDU *apdu, int len);
98 mp::ThreadPoolSocketObserver *m_thread_pool_observer;
99 mp::Session m_session;
102 const mp::Package *m_package;
105 class FrontendNet::ThreadPoolPackage : public mp::IThreadPoolMsg {
107 ThreadPoolPackage(mp::Package *package,
108 yf::FrontendNet::ZAssocChild *ses,
110 ~ThreadPoolPackage();
111 IThreadPoolMsg *handle();
112 void result(const char *t_info);
113 bool cleanup(void *info);
116 ZAssocChild *m_assoc_child;
117 mp::Package *m_package;
120 class FrontendNet::ZAssocServer : public yazpp_1::Z_Assoc {
123 ZAssocServer(yazpp_1::IPDU_Observable *PDU_Observable,
126 void set_package(const mp::Package *package);
127 void set_thread_pool(ThreadPoolSocketObserver *observer);
129 yazpp_1::IPDU_Observer* sessionNotify(
130 yazpp_1::IPDU_Observable *the_PDU_Observable,
132 void recv_GDU(Z_GDU *apdu, int len);
135 void timeoutNotify();
136 void connectNotify();
138 mp::ThreadPoolSocketObserver *m_thread_pool_observer;
139 const mp::Package *m_package;
140 yazpp_1::LimitConnect limit_connect;
147 yf::FrontendNet::ThreadPoolPackage::ThreadPoolPackage(mp::Package *package,
150 m_assoc_child(ses), m_package(package), m_p(rep)
152 timer = yaz_timing_create();
155 yf::FrontendNet::ThreadPoolPackage::~ThreadPoolPackage()
157 yaz_timing_destroy(&timer); // timer may be NULL
161 bool yf::FrontendNet::ThreadPoolPackage::cleanup(void *info)
163 mp::Session *ses = (mp::Session *) info;
165 return *ses == m_package->session();
168 void yf::FrontendNet::ThreadPoolPackage::result(const char *t_info)
170 m_assoc_child->m_no_requests--;
172 yazpp_1::GDU *gdu = &m_package->response();
177 m_assoc_child->send_GDU(gdu->get(), &len);
179 yaz_timing_stop(timer);
180 double duration = yaz_timing_get_real(timer);
183 while (m_p->m_duration_lim[ent] != 0.0 && duration > m_p->m_duration_lim[ent])
185 m_p->m_duration_freq[ent]++;
187 if (m_p->m_msg_config.length())
189 Z_GDU *z_gdu = gdu->get();
191 std::ostringstream os;
192 os << m_p->m_msg_config << " "
194 << std::fixed << std::setprecision (6) << duration << " ";
201 yaz_log(YLOG_LOG, "%s %s", os.str().c_str(), t_info);
204 else if (!m_package->session().is_closed())
206 // no response package and yet the session is still open..
207 // means that request is unhandled..
208 yazpp_1::GDU *gdu_req = &m_package->request();
209 Z_GDU *z_gdu = gdu_req->get();
210 if (z_gdu && z_gdu->which == Z_GDU_Z3950)
212 // For Z39.50, response with a Close and shutdown
215 Z_APDU *apdu_response = odr.create_close(
216 z_gdu->u.z3950, Z_Close_systemProblem,
217 "unhandled Z39.50 request");
219 m_assoc_child->send_Z_PDU(apdu_response, &len);
221 else if (z_gdu && z_gdu->which == Z_GDU_HTTP_Request)
223 // For HTTP, respond with Server Error
227 = odr.create_HTTP_Response(m_package->session(),
228 z_gdu->u.HTTP_Request, 500);
229 m_assoc_child->send_GDU(zgdu_res, &len);
231 m_package->session().close();
234 if (m_assoc_child->m_no_requests == 0 && m_package->session().is_closed())
236 m_assoc_child->close();
243 mp::IThreadPoolMsg *yf::FrontendNet::ThreadPoolPackage::handle()
245 m_package->move(m_assoc_child->m_route);
249 yf::FrontendNet::ZAssocChild::ZAssocChild(
250 yazpp_1::IPDU_Observable *PDU_Observable,
251 mp::ThreadPoolSocketObserver *my_thread_pool,
252 const mp::Package *package,
253 std::string route, Rep *rep)
254 : Z_Assoc(PDU_Observable), m_p(rep)
256 m_thread_pool_observer = my_thread_pool;
258 m_delete_flag = false;
261 const char *peername = PDU_Observable->getpeername();
263 peername = "unknown";
264 m_origin.set_tcpip_address(std::string(peername), m_session.id());
265 timeout(m_p->m_session_timeout);
268 yazpp_1::IPDU_Observer *yf::FrontendNet::ZAssocChild::sessionNotify(
269 yazpp_1::IPDU_Observable *the_PDU_Observable, int fd)
274 yf::FrontendNet::ZAssocChild::~ZAssocChild()
278 void yf::FrontendNet::ZAssocChild::recv_GDU(Z_GDU *z_pdu, int len)
282 mp::Package *p = new mp::Package(m_session, m_origin);
284 if (z_pdu && z_pdu->which == Z_GDU_HTTP_Request)
286 Z_HTTP_Request *hreq = z_pdu->u.HTTP_Request;
288 if (m_p->m_stat_req.length()
289 && !strcmp(hreq->path, m_p->m_stat_req.c_str()))
293 Z_GDU *gdu_res = o.create_HTTP_Response(m_session, hreq, 200);
295 Z_HTTP_Response *hres = gdu_res->u.HTTP_Response;
299 int number_total = 0;
301 for (i = 0; m_p->m_duration_lim[i] != 0.0; i++)
302 number_total += m_p->m_duration_freq[i];
303 number_total += m_p->m_duration_freq[i];
305 wrbuf_puts(w, "<?xml version=\"1.0\">\n");
306 wrbuf_puts(w, "<frontend_net>\n");
307 wrbuf_printf(w, " <responses frequency=\"%d\">\n", number_total);
308 for (i = 0; m_p->m_duration_lim[i] != 0.0; i++)
310 if (m_p->m_duration_freq[i] > 0)
312 w, " <response mintime=\"%f\" "
313 "maxtime=\"%f\" frequency=\"%d\"/>\n",
314 i > 0 ? m_p->m_duration_lim[i - 1] : 0.0,
315 m_p->m_duration_lim[i], m_p->m_duration_freq[i]);
318 if (m_p->m_duration_freq[i] > 0)
320 w, " <response mintime=\"%f\" frequency=\"%d\"/>\n",
321 m_p->m_duration_lim[i - 1], m_p->m_duration_freq[i]);
322 wrbuf_puts(w, " </responses>\n");
323 wrbuf_puts(w, "</frontend_net>\n");
325 hres->content_len = w.len();
326 hres->content_buf = (char *) w.buf();
329 send_GDU(gdu_res, &len);
334 ThreadPoolPackage *tp = new ThreadPoolPackage(p, this, m_p);
335 p->copy_route(*m_package);
336 p->request() = yazpp_1::GDU(z_pdu);
338 if (m_p->m_msg_config.length())
342 std::ostringstream os;
343 os << m_p->m_msg_config << " "
347 yaz_log(YLOG_LOG, "%s", os.str().c_str());
350 m_thread_pool_observer->put(tp);
353 void yf::FrontendNet::ZAssocChild::failNotify()
355 // TODO: send Package to signal "close"
356 if (m_session.is_closed())
358 if (m_no_requests == 0)
366 mp::Package *p = new mp::Package(m_session, m_origin);
368 ThreadPoolPackage *tp = new ThreadPoolPackage(p, this, m_p);
369 p->copy_route(*m_package);
370 m_thread_pool_observer->cleanup(tp, &m_session);
371 m_thread_pool_observer->put(tp);
374 void yf::FrontendNet::ZAssocChild::timeoutNotify()
379 void yf::FrontendNet::ZAssocChild::connectNotify()
384 yf::FrontendNet::ZAssocServer::ZAssocServer(
385 yazpp_1::IPDU_Observable *PDU_Observable,
389 Z_Assoc(PDU_Observable), m_route(route), m_p(rep)
395 void yf::FrontendNet::ZAssocServer::set_package(const mp::Package *package)
400 void yf::FrontendNet::ZAssocServer::set_thread_pool(
401 ThreadPoolSocketObserver *observer)
403 m_thread_pool_observer = observer;
406 yazpp_1::IPDU_Observer *yf::FrontendNet::ZAssocServer::sessionNotify(
407 yazpp_1::IPDU_Observable *the_PDU_Observable, int fd)
410 const char *peername = the_PDU_Observable->getpeername();
413 limit_connect.add_connect(peername);
414 limit_connect.cleanup(false);
415 int con_sz = limit_connect.get_total(peername);
416 if (m_p->m_connect_max && con_sz > m_p->m_connect_max)
419 ZAssocChild *my = new ZAssocChild(the_PDU_Observable,
420 m_thread_pool_observer,
421 m_package, m_route, m_p);
425 yf::FrontendNet::ZAssocServer::~ZAssocServer()
429 void yf::FrontendNet::ZAssocServer::recv_GDU(Z_GDU *apdu, int len)
433 void yf::FrontendNet::ZAssocServer::failNotify()
437 void yf::FrontendNet::ZAssocServer::timeoutNotify()
441 void yf::FrontendNet::ZAssocServer::connectNotify()
445 yf::FrontendNet::FrontendNet() : m_p(new Rep)
449 yf::FrontendNet::Rep::Rep()
452 m_listen_duration = 0;
453 m_session_timeout = 300; // 5 minutes
457 for (i = 0; i < 22; i++)
458 m_duration_freq[i] = 0;
459 m_duration_lim[0] = 0.000001;
460 m_duration_lim[1] = 0.00001;
461 m_duration_lim[2] = 0.0001;
462 m_duration_lim[3] = 0.001;
463 m_duration_lim[4] = 0.01;
464 m_duration_lim[5] = 0.1;
465 m_duration_lim[6] = 0.2;
466 m_duration_lim[7] = 0.3;
467 m_duration_lim[8] = 0.5;
468 m_duration_lim[9] = 1.0;
469 m_duration_lim[10] = 1.5;
470 m_duration_lim[11] = 2.0;
471 m_duration_lim[12] = 3.0;
472 m_duration_lim[13] = 4.0;
473 m_duration_lim[14] = 5.0;
474 m_duration_lim[15] = 6.0;
475 m_duration_lim[16] = 8.0;
476 m_duration_lim[17] = 10.0;
477 m_duration_lim[18] = 15.0;
478 m_duration_lim[19] = 20.0;
479 m_duration_lim[20] = 30.0;
480 m_duration_lim[21] = 0;
484 yf::FrontendNet::Rep::~Rep()
489 for (i = 0; i < m_ports.size(); i++)
496 yf::FrontendNet::~FrontendNet()
500 void yf::FrontendNet::stop() const
505 for (i = 0; i < m_p->m_ports.size(); i++)
506 m_p->az[i]->server("");
510 bool yf::FrontendNet::My_Timer_Thread::timeout()
515 yf::FrontendNet::My_Timer_Thread::My_Timer_Thread(
516 yazpp_1::ISocketObservable *obs,
518 m_obs(obs), m_pipe(9123), m_timeout(false)
520 obs->addObserver(m_pipe.read_fd(), this);
521 obs->maskObserver(this, yazpp_1::SOCKET_OBSERVE_READ);
522 obs->timeoutObserver(this, duration);
525 void yf::FrontendNet::My_Timer_Thread::socketNotify(int event)
528 m_obs->deleteObserver(this);
531 void yf::FrontendNet::process(Package &package) const
536 My_Timer_Thread *tt = 0;
538 if (m_p->m_listen_duration)
539 tt = new My_Timer_Thread(&m_p->mySocketManager,
540 m_p->m_listen_duration);
542 ThreadPoolSocketObserver tp(&m_p->mySocketManager, m_p->m_no_threads);
544 for (i = 0; i<m_p->m_ports.size(); i++)
546 m_p->az[i]->set_package(&package);
547 m_p->az[i]->set_thread_pool(&tp);
549 while (m_p->mySocketManager.processEvent() > 0)
551 int no = m_p->mySocketManager.getNumberOfObservers();
554 if (tt && tt->timeout())
560 void yf::FrontendNet::configure(const xmlNode * ptr, bool test_only,
563 if (!ptr || !ptr->children)
565 throw yf::FilterException("No ports for Frontend");
567 std::vector<Port> ports;
568 for (ptr = ptr->children; ptr; ptr = ptr->next)
570 if (ptr->type != XML_ELEMENT_NODE)
572 if (!strcmp((const char *) ptr->name, "port"))
575 const struct _xmlAttr *attr;
576 for (attr = ptr->properties; attr; attr = attr->next)
578 if (!strcmp((const char *) attr->name, "route"))
579 port.route = mp::xml::get_text(attr);
581 port.port = mp::xml::get_text(ptr);
582 ports.push_back(port);
585 else if (!strcmp((const char *) ptr->name, "threads"))
587 std::string threads_str = mp::xml::get_text(ptr);
588 int threads = atoi(threads_str.c_str());
590 throw yf::FilterException("Bad value for threads: "
592 m_p->m_no_threads = threads;
594 else if (!strcmp((const char *) ptr->name, "timeout"))
596 std::string timeout_str = mp::xml::get_text(ptr);
597 int timeout = atoi(timeout_str.c_str());
599 throw yf::FilterException("Bad value for timeout: "
601 m_p->m_session_timeout = timeout;
603 else if (!strcmp((const char *) ptr->name, "connect-max"))
605 m_p->m_connect_max = mp::xml::get_int(ptr, 0);
607 else if (!strcmp((const char *) ptr->name, "message"))
609 m_p->m_msg_config = mp::xml::get_text(ptr);
611 else if (!strcmp((const char *) ptr->name, "stat-req"))
613 m_p->m_stat_req = mp::xml::get_text(ptr);
617 throw yf::FilterException("Bad element "
618 + std::string((const char *)
627 void yf::FrontendNet::set_ports(std::vector<std::string> &ports)
629 std::vector<Port> nports;
632 for (i = 0; i < ports.size(); i++)
636 nport.port = ports[i];
638 nports.push_back(nport);
644 void yf::FrontendNet::set_ports(std::vector<Port> &ports)
646 m_p->m_ports = ports;
648 m_p->az = new yf::FrontendNet::ZAssocServer *[m_p->m_ports.size()];
650 // Create yf::FrontendNet::ZAssocServer for each port
652 for (i = 0; i<m_p->m_ports.size(); i++)
654 // create a PDU assoc object (one per yf::FrontendNet::ZAssocServer)
655 yazpp_1::PDU_Assoc *as = new yazpp_1::PDU_Assoc(&m_p->mySocketManager);
657 // create ZAssoc with PDU Assoc
658 m_p->az[i] = new yf::FrontendNet::ZAssocServer(
659 as, m_p->m_ports[i].route, m_p.get());
660 if (m_p->az[i]->server(m_p->m_ports[i].port.c_str()))
662 throw yf::FilterException("Unable to bind to address "
663 + std::string(m_p->m_ports[i].port));
668 void yf::FrontendNet::set_listen_duration(int d)
670 m_p->m_listen_duration = d;
673 static yf::Base* filter_creator()
675 return new yf::FrontendNet;
679 struct metaproxy_1_filter_struct metaproxy_1_filter_frontend_net = {
689 * c-file-style: "Stroustrup"
690 * indent-tabs-mode: nil
692 * vim: shiftwidth=4 tabstop=8 expandtab