1 /* $Id: filter_session_shared.cpp,v 1.18 2007-05-09 21:23:09 adam Exp $
2 Copyright (c) 2005-2007, Index Data.
4 This file is part of Metaproxy.
6 Metaproxy is free software; you can redistribute it and/or modify it under
7 the terms of the GNU General Public License as published by the Free
8 Software Foundation; either version 2, or (at your option) any later
11 Metaproxy is distributed in the hope that it will be useful, but WITHOUT ANY
12 WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
16 You should have received a copy of the GNU General Public License
17 along with Metaproxy; see the file LICENSE. If not, write to the
18 Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA
25 #include "package.hpp"
27 #include <boost/thread/mutex.hpp>
28 #include <boost/thread/condition.hpp>
29 #include <boost/thread/thread.hpp>
30 #include <boost/thread/xtime.hpp>
31 #include <boost/shared_ptr.hpp>
32 #include <boost/format.hpp>
35 #include "filter_session_shared.hpp"
39 #include <yaz/otherinfo.h>
40 #include <yaz/diagbib1.h>
41 #include <yazpp/z-query.h>
46 namespace mp = metaproxy_1;
47 namespace yf = metaproxy_1::filter;
49 namespace metaproxy_1 {
52 class SessionShared::InitKey {
54 bool operator < (const SessionShared::InitKey &k) const;
55 InitKey(Z_InitRequest *req);
56 InitKey(const InitKey &);
59 InitKey &operator = (const InitKey &k);
60 char *m_idAuthentication_buf;
61 int m_idAuthentication_size;
62 char *m_otherInfo_buf;
66 class SessionShared::Worker {
68 Worker(SessionShared::Rep *rep);
69 void operator() (void);
71 SessionShared::Rep *m_p;
73 class SessionShared::BackendSet {
75 std::string m_result_set_id;
76 Databases m_databases;
77 int m_result_set_size;
78 yazpp_1::Yaz_Z_Query m_query;
79 time_t m_time_last_use;
82 const std::string &result_set_id,
83 const Databases &databases,
84 const yazpp_1::Yaz_Z_Query &query);
86 Package &frontend_package,
87 const Z_APDU *apdu_req,
88 const BackendInstancePtr bp);
90 class SessionShared::BackendInstance {
92 friend class BackendClass;
93 friend class BackendSet;
95 mp::Session m_session;
96 BackendSetList m_sets;
99 int m_result_set_sequence;
100 time_t m_time_last_use;
101 mp::Package * m_close_package;
104 class SessionShared::BackendClass : boost::noncopyable {
106 friend struct Frontend;
107 bool m_named_result_sets;
108 BackendInstanceList m_backend_list;
109 BackendInstancePtr create_backend(const Package &package);
110 void remove_backend(BackendInstancePtr b);
111 BackendInstancePtr get_backend(const Package &package);
112 void use_backend(BackendInstancePtr b);
113 void release_backend(BackendInstancePtr b);
115 yazpp_1::GDU m_init_request;
116 yazpp_1::GDU m_init_response;
117 boost::mutex m_mutex_backend_class;
119 time_t m_backend_set_ttl;
120 time_t m_backend_expiry_ttl;
121 size_t m_backend_set_max;
123 BackendClass(const yazpp_1::GDU &init_request,
129 class SessionShared::FrontendSet {
130 Databases m_databases;
131 yazpp_1::Yaz_Z_Query m_query;
133 const Databases &get_databases();
134 const yazpp_1::Yaz_Z_Query &get_query();
136 const Databases &databases,
137 const yazpp_1::Yaz_Z_Query &query);
140 struct SessionShared::Frontend {
145 Z_Options m_init_options;
146 void search(Package &package, Z_APDU *apdu);
147 void present(Package &package, Z_APDU *apdu);
148 void scan(Package &package, Z_APDU *apdu);
150 void get_set(mp::Package &package,
151 const Z_APDU *apdu_req,
152 const Databases &databases,
153 yazpp_1::Yaz_Z_Query &query,
154 BackendInstancePtr &found_backend,
155 BackendSetPtr &found_set);
156 void override_set(BackendInstancePtr &found_backend,
157 std::string &result_set_id);
160 BackendClassPtr m_backend_class;
161 FrontendSets m_frontend_sets;
163 class SessionShared::Rep {
164 friend class SessionShared;
165 friend struct Frontend;
167 FrontendPtr get_frontend(Package &package);
168 void release_frontend(Package &package);
173 void init(Package &package, const Z_GDU *gdu,
174 FrontendPtr frontend);
175 boost::mutex m_mutex;
176 boost::condition m_cond_session_ready;
177 std::map<mp::Session, FrontendPtr> m_clients;
179 BackendClassMap m_backend_map;
180 boost::mutex m_mutex_backend_map;
181 boost::thread_group m_thrds;
189 yf::SessionShared::FrontendSet::FrontendSet(
190 const Databases &databases,
191 const yazpp_1::Yaz_Z_Query &query)
192 : m_databases(databases), m_query(query)
196 const yf::SessionShared::Databases &
197 yf::SessionShared::FrontendSet::get_databases()
202 const yazpp_1::Yaz_Z_Query& yf::SessionShared::FrontendSet::get_query()
207 yf::SessionShared::InitKey::InitKey(const InitKey &k)
209 m_odr = odr_createmem(ODR_ENCODE);
211 m_idAuthentication_size = k.m_idAuthentication_size;
212 m_idAuthentication_buf = (char*)odr_malloc(m_odr, m_idAuthentication_size);
213 memcpy(m_idAuthentication_buf, k.m_idAuthentication_buf,
214 m_idAuthentication_size);
216 m_otherInfo_size = k.m_otherInfo_size;
217 m_otherInfo_buf = (char*)odr_malloc(m_odr, m_otherInfo_size);
218 memcpy(m_otherInfo_buf, k.m_otherInfo_buf,
222 yf::SessionShared::InitKey::InitKey(Z_InitRequest *req)
224 m_odr = odr_createmem(ODR_ENCODE);
226 Z_IdAuthentication *t = req->idAuthentication;
227 z_IdAuthentication(m_odr, &t, 1, 0);
228 m_idAuthentication_buf =
229 odr_getbuf(m_odr, &m_idAuthentication_size, 0);
231 Z_OtherInformation *o = req->otherInfo;
232 z_OtherInformation(m_odr, &o, 1, 0);
233 m_otherInfo_buf = odr_getbuf(m_odr, &m_otherInfo_size, 0);
236 yf::SessionShared::InitKey::~InitKey()
241 bool yf::SessionShared::InitKey::operator < (const SessionShared::InitKey &k)
245 c = mp::util::memcmp2(
246 (void*) m_idAuthentication_buf, m_idAuthentication_size,
247 (void*) k.m_idAuthentication_buf, k.m_idAuthentication_size);
253 c = mp::util::memcmp2((void*) m_otherInfo_buf, m_otherInfo_size,
254 (void*) k.m_otherInfo_buf, k.m_otherInfo_size);
262 void yf::SessionShared::BackendClass::release_backend(BackendInstancePtr b)
264 boost::mutex::scoped_lock lock(m_mutex_backend_class);
269 void yf::SessionShared::BackendClass::remove_backend(BackendInstancePtr b)
271 BackendInstanceList::iterator it = m_backend_list.begin();
273 while (it != m_backend_list.end())
276 it = m_backend_list.erase(it);
284 yf::SessionShared::BackendInstancePtr
285 yf::SessionShared::BackendClass::get_backend(
286 const mp::Package &frontend_package)
289 boost::mutex::scoped_lock lock(m_mutex_backend_class);
291 BackendInstanceList::const_iterator it = m_backend_list.begin();
293 BackendInstancePtr backend1; // null
295 for (; it != m_backend_list.end(); it++)
297 if (!(*it)->m_in_use)
300 || (*it)->m_sequence_this < backend1->m_sequence_this)
306 use_backend(backend1);
310 return create_backend(frontend_package);
313 void yf::SessionShared::BackendClass::use_backend(BackendInstancePtr backend)
315 backend->m_in_use = true;
316 time(&backend->m_time_last_use);
317 backend->m_sequence_this = m_sequence_top++;
320 yf::SessionShared::BackendInstance::~BackendInstance()
322 delete m_close_package;
325 yf::SessionShared::BackendInstancePtr yf::SessionShared::BackendClass::create_backend(
326 const mp::Package &frontend_package)
328 BackendInstancePtr bp(new BackendInstance);
329 BackendInstancePtr null;
331 bp->m_close_package =
332 new mp::Package(bp->m_session, frontend_package.origin());
333 bp->m_close_package->copy_filter(frontend_package);
335 Package init_package(bp->m_session, frontend_package.origin());
337 init_package.copy_filter(frontend_package);
339 yazpp_1::GDU actual_init_request = m_init_request;
340 Z_GDU *init_pdu = actual_init_request.get();
342 assert(init_pdu->which == Z_GDU_Z3950);
343 assert(init_pdu->u.z3950->which == Z_APDU_initRequest);
345 Z_InitRequest *req = init_pdu->u.z3950->u.initRequest;
346 ODR_MASK_ZERO(req->options);
348 ODR_MASK_SET(req->options, Z_Options_search);
349 ODR_MASK_SET(req->options, Z_Options_present);
350 ODR_MASK_SET(req->options, Z_Options_namedResultSets);
351 ODR_MASK_SET(req->options, Z_Options_scan);
353 ODR_MASK_SET(req->protocolVersion, Z_ProtocolVersion_1);
354 ODR_MASK_SET(req->protocolVersion, Z_ProtocolVersion_2);
355 ODR_MASK_SET(req->protocolVersion, Z_ProtocolVersion_3);
357 init_package.request() = init_pdu;
361 boost::mutex::scoped_lock lock(m_mutex_backend_class);
363 m_named_result_sets = false;
364 Z_GDU *gdu = init_package.response().get();
365 if (!init_package.session().is_closed()
366 && gdu && gdu->which == Z_GDU_Z3950
367 && gdu->u.z3950->which == Z_APDU_initResponse)
369 Z_InitResponse *res = gdu->u.z3950->u.initResponse;
372 m_init_response = gdu->u.z3950;
373 if (ODR_MASK_GET(res->options, Z_Options_namedResultSets))
375 m_named_result_sets = true;
380 // did not receive an init response or closed
384 time(&bp->m_time_last_use);
385 bp->m_sequence_this = 0;
386 bp->m_result_set_sequence = 0;
387 m_backend_list.push_back(bp);
393 yf::SessionShared::BackendClass::BackendClass(const yazpp_1::GDU &init_request,
397 : m_named_result_sets(false), m_init_request(init_request),
398 m_sequence_top(0), m_backend_set_ttl(resultset_ttl),
399 m_backend_expiry_ttl(session_ttl), m_backend_set_max(resultset_max)
402 yf::SessionShared::BackendClass::~BackendClass()
405 void yf::SessionShared::Rep::init(mp::Package &package, const Z_GDU *gdu,
406 FrontendPtr frontend)
408 Z_InitRequest *req = gdu->u.z3950->u.initRequest;
410 frontend->m_is_virtual = true;
411 frontend->m_init_options = *req->options;
414 boost::mutex::scoped_lock lock(m_mutex_backend_map);
415 BackendClassMap::const_iterator it;
416 it = m_backend_map.find(k);
417 if (it == m_backend_map.end())
419 BackendClassPtr b(new BackendClass(gdu->u.z3950,
423 m_backend_map[k] = b;
424 frontend->m_backend_class = b;
425 std::cout << "SessionShared::Rep::init new session "
426 << frontend->m_backend_class << "\n";
430 frontend->m_backend_class = it->second;
431 std::cout << "SessionShared::Rep::init existing session "
432 << frontend->m_backend_class << "\n";
435 BackendClassPtr bc = frontend->m_backend_class;
436 BackendInstancePtr backend = bc->get_backend(package);
441 Z_APDU *apdu = odr.create_initResponse(gdu->u.z3950, 0, 0);
442 *apdu->u.initResponse->result = 0;
443 package.response() = apdu;
444 package.session().close();
448 boost::mutex::scoped_lock lock(bc->m_mutex_backend_class);
449 yazpp_1::GDU init_response = bc->m_init_response;
450 Z_GDU *response_gdu = init_response.get();
451 mp::util::transfer_referenceId(odr, gdu->u.z3950,
452 response_gdu->u.z3950);
454 Z_Options *server_options =
455 response_gdu->u.z3950->u.initResponse->options;
456 Z_Options *client_options = &frontend->m_init_options;
459 for (i = 0; i<30; i++)
460 if (!ODR_MASK_GET(client_options, i))
461 ODR_MASK_CLEAR(server_options, i);
462 package.response() = init_response;
465 bc->release_backend(backend);
468 void yf::SessionShared::BackendSet::timestamp()
470 time(&m_time_last_use);
473 yf::SessionShared::BackendSet::BackendSet(
474 const std::string &result_set_id,
475 const Databases &databases,
476 const yazpp_1::Yaz_Z_Query &query) :
477 m_result_set_id(result_set_id),
478 m_databases(databases), m_result_set_size(0), m_query(query)
483 bool yf::SessionShared::BackendSet::search(
484 mp::Package &frontend_package,
485 const Z_APDU *frontend_apdu,
486 const BackendInstancePtr bp)
488 Package search_package(bp->m_session, frontend_package.origin());
490 search_package.copy_filter(frontend_package);
493 Z_APDU *apdu_req = zget_APDU(odr, Z_APDU_searchRequest);
494 Z_SearchRequest *req = apdu_req->u.searchRequest;
496 req->resultSetName = odr_strdup(odr, m_result_set_id.c_str());
497 req->query = m_query.get_Z_Query();
499 req->num_databaseNames = m_databases.size();
500 req->databaseNames = (char**)
501 odr_malloc(odr, req->num_databaseNames * sizeof(char *));
502 Databases::const_iterator it = m_databases.begin();
504 for (; it != m_databases.end(); it++)
505 req->databaseNames[i++] = odr_strdup(odr, it->c_str());
507 search_package.request() = apdu_req;
509 search_package.move();
511 Z_Records *z_records_diag = 0;
512 Z_GDU *gdu = search_package.response().get();
513 if (!search_package.session().is_closed()
514 && gdu && gdu->which == Z_GDU_Z3950
515 && gdu->u.z3950->which == Z_APDU_searchResponse)
517 Z_SearchResponse *b_resp = gdu->u.z3950->u.searchResponse;
520 if (b_resp->records->which == Z_Records_NSD
521 || b_resp->records->which == Z_Records_multipleNSD)
522 z_records_diag = b_resp->records;
526 if (frontend_apdu->which == Z_APDU_searchRequest)
528 Z_APDU *f_apdu = odr.create_searchResponse(frontend_apdu,
530 Z_SearchResponse *f_resp = f_apdu->u.searchResponse;
531 f_resp->records = z_records_diag;
532 frontend_package.response() = f_apdu;
535 if (frontend_apdu->which == Z_APDU_presentRequest)
537 Z_APDU *f_apdu = odr.create_presentResponse(frontend_apdu,
539 Z_PresentResponse *f_resp = f_apdu->u.presentResponse;
540 f_resp->records = z_records_diag;
541 frontend_package.response() = f_apdu;
545 m_result_set_size = *b_resp->resultCount;
549 if (frontend_apdu->which == Z_APDU_searchRequest)
550 f_apdu = odr.create_searchResponse(
551 frontend_apdu, YAZ_BIB1_TEMPORARY_SYSTEM_ERROR, 0);
552 else if (frontend_apdu->which == Z_APDU_presentRequest)
553 f_apdu = odr.create_presentResponse(
554 frontend_apdu, YAZ_BIB1_TEMPORARY_SYSTEM_ERROR, 0);
556 f_apdu = odr.create_close(
557 frontend_apdu, YAZ_BIB1_TEMPORARY_SYSTEM_ERROR, 0);
558 frontend_package.response() = f_apdu;
562 void yf::SessionShared::Frontend::override_set(
563 BackendInstancePtr &found_backend,
564 std::string &result_set_id)
566 BackendClassPtr bc = m_backend_class;
567 BackendInstanceList::const_iterator it = bc->m_backend_list.begin();
571 for (; it != bc->m_backend_list.end(); it++)
573 if (!(*it)->m_in_use)
575 BackendSetList::iterator set_it = (*it)->m_sets.begin();
576 for (; set_it != (*it)->m_sets.end(); set_it++)
578 if (now >= (*set_it)->m_time_last_use &&
579 now - (*set_it)->m_time_last_use > bc->m_backend_set_ttl)
582 result_set_id = (*set_it)->m_result_set_id;
583 found_backend->m_sets.erase(set_it);
584 std::cout << "REUSE TTL SET: " << result_set_id << "\n";
590 size_t max_sets = bc->m_named_result_sets ? bc->m_backend_set_max : 1;
591 for (it = bc->m_backend_list.begin(); it != bc->m_backend_list.end(); it++)
593 if (!(*it)->m_in_use && (*it)->m_sets.size() < max_sets)
596 if (bc->m_named_result_sets)
598 result_set_id = boost::io::str(
599 boost::format("%1%") %
600 found_backend->m_result_set_sequence);
601 found_backend->m_result_set_sequence++;
604 result_set_id = "default";
605 std::cout << "AVAILABLE SET: " << result_set_id << "\n";
611 void yf::SessionShared::Frontend::get_set(mp::Package &package,
612 const Z_APDU *apdu_req,
613 const Databases &databases,
614 yazpp_1::Yaz_Z_Query &query,
615 BackendInstancePtr &found_backend,
616 BackendSetPtr &found_set)
618 std::string result_set_id;
619 BackendClassPtr bc = m_backend_class;
621 boost::mutex::scoped_lock lock(bc->m_mutex_backend_class);
623 // look at each backend and see if we have a similar search
624 BackendInstanceList::const_iterator it = bc->m_backend_list.begin();
626 for (; it != bc->m_backend_list.end(); it++)
628 if (!(*it)->m_in_use)
630 BackendSetList::const_iterator set_it = (*it)->m_sets.begin();
631 for (; set_it != (*it)->m_sets.end(); set_it++)
633 if ((*set_it)->m_databases == databases
634 && query.match(&(*set_it)->m_query))
638 bc->use_backend(found_backend);
639 found_set->timestamp();
640 std::cout << "MATCH SET: " <<
641 found_set->m_result_set_id << "\n";
642 // found matching set. No need to search again
648 override_set(found_backend, result_set_id);
650 bc->use_backend(found_backend);
654 // create a new backend set (and new set)
655 found_backend = bc->create_backend(package);
661 if (apdu_req->which == Z_APDU_searchRequest)
663 f_apdu = odr.create_searchResponse(
664 apdu_req, YAZ_BIB1_TEMPORARY_SYSTEM_ERROR, 0);
666 else if (apdu_req->which == Z_APDU_presentRequest)
668 f_apdu = odr.create_presentResponse(
669 apdu_req, YAZ_BIB1_TEMPORARY_SYSTEM_ERROR, 0);
673 f_apdu = odr.create_close(
674 apdu_req, YAZ_BIB1_TEMPORARY_SYSTEM_ERROR, 0);
676 package.response() = f_apdu;
679 std::cout << "NEW " << found_backend << "\n";
681 if (bc->m_named_result_sets)
683 result_set_id = boost::io::str(
684 boost::format("%1%") % found_backend->m_result_set_sequence);
685 found_backend->m_result_set_sequence++;
688 result_set_id = "default";
689 std::cout << "NEW SET: " << result_set_id << "\n";
691 // we must search ...
692 BackendSetPtr new_set(new BackendSet(result_set_id,
694 if (!new_set->search(package, apdu_req, found_backend))
696 std::cout << "search error\n";
697 bc->remove_backend(found_backend);
698 return; // search error
701 found_set->timestamp();
702 found_backend->m_sets.push_back(found_set);
705 void yf::SessionShared::Frontend::search(mp::Package &package,
708 Z_SearchRequest *req = apdu_req->u.searchRequest;
709 FrontendSets::iterator fset_it =
710 m_frontend_sets.find(req->resultSetName);
711 if (fset_it != m_frontend_sets.end())
713 // result set already exist
714 // if replace indicator is off: we return diagnostic if
715 // result set already exist.
716 if (*req->replaceIndicator == 0)
720 odr.create_searchResponse(
722 YAZ_BIB1_RESULT_SET_EXISTS_AND_REPLACE_INDICATOR_OFF,
724 package.response() = apdu;
728 m_frontend_sets.erase(fset_it);
731 yazpp_1::Yaz_Z_Query query;
732 query.set_Z_Query(req->query);
735 for (i = 0; i<req->num_databaseNames; i++)
736 databases.push_back(req->databaseNames[i]);
738 BackendSetPtr found_set; // null
739 BackendInstancePtr found_backend; // null
741 get_set(package, apdu_req, databases, query, found_backend, found_set);
746 Z_APDU *f_apdu = odr.create_searchResponse(apdu_req, 0, 0);
747 Z_SearchResponse *f_resp = f_apdu->u.searchResponse;
748 *f_resp->resultCount = found_set->m_result_set_size;
749 package.response() = f_apdu;
751 FrontendSetPtr fset(new FrontendSet(databases, query));
752 m_frontend_sets[req->resultSetName] = fset;
754 m_backend_class->release_backend(found_backend);
757 void yf::SessionShared::Frontend::present(mp::Package &package,
761 Z_PresentRequest *req = apdu_req->u.presentRequest;
763 FrontendSets::iterator fset_it =
764 m_frontend_sets.find(req->resultSetId);
766 if (fset_it == m_frontend_sets.end())
769 odr.create_presentResponse(
771 YAZ_BIB1_SPECIFIED_RESULT_SET_DOES_NOT_EXIST,
773 package.response() = apdu;
776 FrontendSetPtr fset = fset_it->second;
778 Databases databases = fset->get_databases();
779 yazpp_1::Yaz_Z_Query query = fset->get_query();
781 BackendClassPtr bc = m_backend_class;
782 BackendSetPtr found_set; // null
783 BackendInstancePtr found_backend;
785 get_set(package, apdu_req, databases, query, found_backend, found_set);
789 Z_APDU *p_apdu = zget_APDU(odr, Z_APDU_presentRequest);
790 Z_PresentRequest *p_req = p_apdu->u.presentRequest;
791 p_req->preferredRecordSyntax = req->preferredRecordSyntax;
792 p_req->resultSetId = odr_strdup(odr, found_set->m_result_set_id.c_str());
793 *p_req->resultSetStartPoint = *req->resultSetStartPoint;
794 *p_req->numberOfRecordsRequested = *req->numberOfRecordsRequested;
795 p_req->preferredRecordSyntax = req->preferredRecordSyntax;
796 p_req->recordComposition = req->recordComposition;
798 Package present_package(found_backend->m_session, package.origin());
799 present_package.copy_filter(package);
801 present_package.request() = p_apdu;
803 present_package.move();
805 Z_GDU *gdu = present_package.response().get();
806 if (!present_package.session().is_closed()
807 && gdu && gdu->which == Z_GDU_Z3950
808 && gdu->u.z3950->which == Z_APDU_presentResponse)
810 Z_PresentResponse *b_resp = gdu->u.z3950->u.presentResponse;
811 Z_APDU *f_apdu_res = odr.create_presentResponse(apdu_req, 0, 0);
812 Z_PresentResponse *f_resp = f_apdu_res->u.presentResponse;
814 f_resp->numberOfRecordsReturned = b_resp->numberOfRecordsReturned;
815 f_resp->nextResultSetPosition = b_resp->nextResultSetPosition;
816 f_resp->presentStatus= b_resp->presentStatus;
817 f_resp->records = b_resp->records;
818 f_resp->otherInfo = b_resp->otherInfo;
819 package.response() = f_apdu_res;
820 bc->release_backend(found_backend);
824 bc->remove_backend(found_backend);
826 odr.create_presentResponse(
827 apdu_req, YAZ_BIB1_TEMPORARY_SYSTEM_ERROR, 0);
828 package.response() = f_apdu_res;
832 void yf::SessionShared::Frontend::scan(mp::Package &frontend_package,
835 BackendClassPtr bc = m_backend_class;
836 BackendInstancePtr backend = bc->get_backend(frontend_package);
840 Z_APDU *apdu = odr.create_scanResponse(
841 apdu_req, YAZ_BIB1_TEMPORARY_SYSTEM_ERROR, 0);
842 frontend_package.response() = apdu;
846 Package scan_package(backend->m_session, frontend_package.origin());
847 scan_package.copy_filter(frontend_package);
848 scan_package.request() = apdu_req;
850 frontend_package.response() = scan_package.response();
851 if (scan_package.session().is_closed())
853 frontend_package.session().close();
854 bc->remove_backend(backend);
857 bc->release_backend(backend);
861 yf::SessionShared::Worker::Worker(SessionShared::Rep *rep) : m_p(rep)
865 void yf::SessionShared::Worker::operator() (void)
870 void yf::SessionShared::BackendClass::expire()
874 boost::mutex::scoped_lock lock(m_mutex_backend_class);
875 BackendInstanceList::iterator bit = m_backend_list.begin();
876 while (bit != m_backend_list.end())
878 std::cout << "expiry ";
879 time_t last_use = (*bit)->m_time_last_use;
881 if ((*bit)->m_in_use)
883 std::cout << "inuse";
886 else if ((now >= last_use && now - last_use > m_backend_expiry_ttl)
890 (*bit)->m_close_package->response() = odr.create_close(
891 0, Z_Close_lackOfActivity, 0);
892 (*bit)->m_close_package->session().close();
893 (*bit)->m_close_package->move();
895 bit = m_backend_list.erase(bit);
896 std::cout << "erase";
903 std::cout << std::endl;
907 void yf::SessionShared::Rep::expire()
912 boost::xtime_get(&xt, boost::TIME_UTC);
914 boost::thread::sleep(xt);
915 //std::cout << "." << std::endl;
917 BackendClassMap::const_iterator b_it = m_backend_map.begin();
918 for (; b_it != m_backend_map.end(); b_it++)
919 b_it->second->expire();
923 yf::SessionShared::Rep::Rep()
925 m_resultset_ttl = 30;
926 m_resultset_max = 10;
928 yf::SessionShared::Worker w(this);
929 m_thrds.add_thread(new boost::thread(w));
932 yf::SessionShared::SessionShared() : m_p(new SessionShared::Rep)
936 yf::SessionShared::~SessionShared() {
940 yf::SessionShared::Frontend::Frontend(Rep *rep) : m_is_virtual(false), m_p(rep)
944 yf::SessionShared::Frontend::~Frontend()
948 yf::SessionShared::FrontendPtr yf::SessionShared::Rep::get_frontend(mp::Package &package)
950 boost::mutex::scoped_lock lock(m_mutex);
952 std::map<mp::Session,yf::SessionShared::FrontendPtr>::iterator it;
956 it = m_clients.find(package.session());
957 if (it == m_clients.end())
960 if (!it->second->m_in_use)
962 it->second->m_in_use = true;
965 m_cond_session_ready.wait(lock);
967 FrontendPtr f(new Frontend(this));
968 m_clients[package.session()] = f;
973 void yf::SessionShared::Rep::release_frontend(mp::Package &package)
975 boost::mutex::scoped_lock lock(m_mutex);
976 std::map<mp::Session,yf::SessionShared::FrontendPtr>::iterator it;
978 it = m_clients.find(package.session());
979 if (it != m_clients.end())
981 if (package.session().is_closed())
987 it->second->m_in_use = false;
989 m_cond_session_ready.notify_all();
994 void yf::SessionShared::process(mp::Package &package) const
996 FrontendPtr f = m_p->get_frontend(package);
998 Z_GDU *gdu = package.request().get();
1000 if (gdu && gdu->which == Z_GDU_Z3950 && gdu->u.z3950->which ==
1001 Z_APDU_initRequest && !f->m_is_virtual)
1003 m_p->init(package, gdu, f);
1005 else if (!f->m_is_virtual)
1007 else if (gdu && gdu->which == Z_GDU_Z3950)
1009 Z_APDU *apdu = gdu->u.z3950;
1010 if (apdu->which == Z_APDU_initRequest)
1014 package.response() = odr.create_close(
1016 Z_Close_protocolError,
1019 package.session().close();
1021 else if (apdu->which == Z_APDU_close)
1025 package.response() = odr.create_close(
1027 Z_Close_peerAbort, "received close from client");
1028 package.session().close();
1030 else if (apdu->which == Z_APDU_searchRequest)
1032 f->search(package, apdu);
1034 else if (apdu->which == Z_APDU_presentRequest)
1036 f->present(package, apdu);
1038 else if (apdu->which == Z_APDU_scanRequest)
1040 f->scan(package, apdu);
1046 package.response() = odr.create_close(
1047 apdu, Z_Close_protocolError,
1048 "unsupported APDU in filter_session_shared");
1050 package.session().close();
1053 m_p->release_frontend(package);
1056 void yf::SessionShared::configure(const xmlNode *ptr)
1058 for (ptr = ptr->children; ptr; ptr = ptr->next)
1060 if (ptr->type != XML_ELEMENT_NODE)
1062 if (!strcmp((const char *) ptr->name, "resultset"))
1064 const struct _xmlAttr *attr;
1065 for (attr = ptr->properties; attr; attr = attr->next)
1067 if (!strcmp((const char *) attr->name, "ttl"))
1068 m_p->m_resultset_ttl =
1069 mp::xml::get_int(attr->children, 30);
1070 else if (!strcmp((const char *) attr->name, "max"))
1072 m_p->m_resultset_max =
1073 mp::xml::get_int(attr->children, 10);
1076 throw mp::filter::FilterException(
1077 "Bad attribute " + std::string((const char *)
1081 else if (!strcmp((const char *) ptr->name, "session"))
1083 const struct _xmlAttr *attr;
1084 for (attr = ptr->properties; attr; attr = attr->next)
1086 if (!strcmp((const char *) attr->name, "ttl"))
1087 m_p->m_session_ttl =
1088 mp::xml::get_int(attr->children, 120);
1090 throw mp::filter::FilterException(
1091 "Bad attribute " + std::string((const char *)
1097 throw mp::filter::FilterException("Bad element "
1098 + std::string((const char *)
1104 static mp::filter::Base* filter_creator()
1106 return new mp::filter::SessionShared;
1110 struct metaproxy_1_filter_struct metaproxy_1_filter_session_shared = {
1120 * indent-tabs-mode: nil
1121 * c-file-style: "stroustrup"
1123 * vim: shiftwidth=4 tabstop=8 expandtab