1 /* $Id: filter_virt_db.cpp,v 1.21 2006-01-12 14:09:08 adam Exp $
2 Copyright (c) 2005, Index Data.
10 #include "package.hpp"
12 #include <boost/thread/mutex.hpp>
13 #include <boost/thread/condition.hpp>
16 #include "filter_virt_db.hpp"
19 #include <yaz/otherinfo.h>
20 #include <yaz/diagbib1.h>
25 namespace yf = yp2::filter;
30 Virt_db_set(yp2::Session &id, std::string setname,
31 std::string vhost, std::string route,
32 bool named_result_sets);
33 Virt_db_set(); ~Virt_db_set();
35 yp2::Session m_backend_session;
36 std::string m_backend_setname;
39 bool m_named_result_sets;
41 struct Virt_db_session {
42 Virt_db_session(yp2::Session &id, bool use_vhost);
44 yp2::Session m_session;
46 std::map<std::string,Virt_db_set> m_sets;
49 Virt_db_map(std::string vhost, std::string route);
57 yp2::Session m_session;
60 std::map<std::string,Virt_db_set> m_sets;
61 void search(Package &package, Z_APDU *apdu,
62 const std::map<std::string, Virt_db_map> &maps);
63 void present(Package &package, Z_APDU *apdu);
64 void close(Package &package);
65 typedef std::map<std::string,Virt_db_set>::iterator Sets_it;
70 void release_session(Package &package);
71 void init(Package &package, Z_APDU *apdu, bool &move_later);
72 void search(Package &package, Z_APDU *apdu, bool &move_later);
73 void present(Package &package, Z_APDU *apdu, bool &move_later);
75 Frontend *get_frontend(Package &package);
76 void release_frontend(Package &package);
78 boost::mutex m_sessions_mutex;
79 std::map<yp2::Session,Virt_db_session>m_sessions;
80 std::map<std::string, Virt_db_map>m_maps;
82 typedef std::map<yp2::Session,Virt_db_session>::iterator Ses_it;
83 typedef std::map<std::string,Virt_db_set>::iterator Sets_it;
86 boost::condition m_cond_session_ready;
87 std::map<yp2::Session,Frontend *> m_clients;
94 yf::Frontend::Frontend()
99 void yf::Frontend::close(Package &package)
101 Sets_it sit = m_sets.begin();
102 for (; sit != m_sets.end(); sit++)
104 sit->second.m_backend_session.close();
105 Package close_package(sit->second.m_backend_session, package.origin());
106 close_package.copy_filter(package);
108 close_package.move(sit->second.m_route);
112 yf::Frontend::~Frontend()
116 yf::Frontend *yf::Virt_db::Rep::get_frontend(Package &package)
118 boost::mutex::scoped_lock lock(m_mutex);
120 std::map<yp2::Session,yf::Frontend *>::iterator it;
124 it = m_clients.find(package.session());
125 if (it == m_clients.end())
128 if (!it->second->m_in_use)
130 it->second->m_in_use = true;
133 m_cond_session_ready.wait(lock);
135 Frontend *f = new Frontend;
136 m_clients[package.session()] = f;
142 void yf::Virt_db::Rep::release_frontend(Package &package)
144 boost::mutex::scoped_lock lock(m_mutex);
145 std::map<yp2::Session,yf::Frontend *>::iterator it;
147 it = m_clients.find(package.session());
148 if (it != m_clients.end())
150 if (package.session().is_closed())
152 it->second->close(package);
158 it->second->m_in_use = false;
160 m_cond_session_ready.notify_all();
164 yf::Virt_db_set::Virt_db_set(yp2::Session &id, std::string setname,
165 std::string vhost, std::string route,
166 bool named_result_sets)
167 : m_backend_session(id), m_backend_setname(setname), m_vhost(vhost),
168 m_route(route), m_named_result_sets(named_result_sets)
173 yf::Virt_db_set::Virt_db_set()
178 yf::Virt_db_set::~Virt_db_set()
182 yf::Virt_db_map::Virt_db_map(std::string vhost, std::string route)
183 : m_vhost(vhost), m_route(route)
187 yf::Virt_db_map::Virt_db_map()
191 yf::Virt_db_session::Virt_db_session()
197 yf::Virt_db_session::Virt_db_session(yp2::Session &id,
199 m_session(id) , m_use_vhost(use_vhost)
204 yf::Virt_db::Virt_db() : m_p(new Virt_db::Rep)
208 yf::Virt_db::~Virt_db() {
211 void yf::Virt_db::Rep::release_session(Package &package)
213 boost::mutex::scoped_lock lock(m_sessions_mutex);
215 Ses_it it = m_sessions.find(package.session());
217 if (it != m_sessions.end())
219 Sets_it sit = it->second.m_sets.begin();
220 for (; sit != it->second.m_sets.end(); sit++)
222 sit->second.m_backend_session.close();
223 Package close_package(sit->second.m_backend_session, package.origin());
224 close_package.copy_filter(package);
226 close_package.move(sit->second.m_route);
229 m_sessions.erase(package.session());
232 void yf::Virt_db::Rep::present(Package &package, Z_APDU *apdu, bool &move_later){
234 Z_PresentRequest *req = apdu->u.presentRequest;
235 std::string resultSetId = req->resultSetId;
238 boost::mutex::scoped_lock lock(m_sessions_mutex);
240 Ses_it it = m_sessions.find(package.session());
241 if (it == m_sessions.end())
243 package.response() = odr.create_close(
244 Z_Close_protocolError,
245 "no session for present request");
246 package.session().close();
249 if (it->second.m_use_vhost)
254 Sets_it sets_it = it->second.m_sets.find(resultSetId);
255 if (sets_it == it->second.m_sets.end())
257 Z_APDU *apdu = zget_APDU(odr, Z_APDU_presentResponse);
259 Z_Records *rec = (Z_Records *) odr_malloc(odr, sizeof(Z_Records));
260 apdu->u.presentResponse->records = rec;
261 rec->which = Z_Records_NSD;
262 rec->u.nonSurrogateDiagnostic =
263 zget_DefaultDiagFormat(
265 YAZ_BIB1_SPECIFIED_RESULT_SET_DOES_NOT_EXIST,
266 resultSetId.c_str());
267 package.response() = apdu;
271 id = new yp2::Session(sets_it->second.m_backend_session);
274 // sending present to backend
275 Package present_package(*id, package.origin());
276 present_package.copy_filter(package);
278 req->resultSetId = odr_strdup(odr, "default");
279 present_package.request() = yazpp_1::GDU(apdu);
281 present_package.move();
283 if (present_package.session().is_closed())
285 Z_APDU *apdu = zget_APDU(odr, Z_APDU_presentResponse);
287 Z_Records *rec = (Z_Records *) odr_malloc(odr, sizeof(Z_Records));
288 apdu->u.presentResponse->records = rec;
289 rec->which = Z_Records_NSD;
290 rec->u.nonSurrogateDiagnostic =
291 zget_DefaultDiagFormat(
293 YAZ_BIB1_RESULT_SET_NO_LONGER_EXISTS_UNILATERALLY_DELETED_BY_,
294 resultSetId.c_str());
295 package.response() = apdu;
297 boost::mutex::scoped_lock lock(m_sessions_mutex);
298 Ses_it it = m_sessions.find(package.session());
299 if (it != m_sessions.end())
300 it->second.m_sets.erase(resultSetId);
304 package.response() = present_package.response();
309 void yf::Frontend::present(Package &package, Z_APDU *apdu)
312 Z_PresentRequest *req = apdu->u.presentRequest;
313 std::string resultSetId = req->resultSetId;
316 Sets_it sets_it = m_sets.find(resultSetId);
317 if (sets_it == m_sets.end())
319 Z_APDU *apdu = zget_APDU(odr, Z_APDU_presentResponse);
321 Z_Records *rec = (Z_Records *) odr_malloc(odr, sizeof(Z_Records));
322 apdu->u.presentResponse->records = rec;
323 rec->which = Z_Records_NSD;
324 rec->u.nonSurrogateDiagnostic =
325 zget_DefaultDiagFormat(
327 YAZ_BIB1_SPECIFIED_RESULT_SET_DOES_NOT_EXIST,
328 resultSetId.c_str());
329 package.response() = apdu;
333 id = new yp2::Session(sets_it->second.m_backend_session);
335 // sending present to backend
336 Package present_package(*id, package.origin());
337 present_package.copy_filter(package);
339 req->resultSetId = odr_strdup(odr, "default");
340 present_package.request() = yazpp_1::GDU(apdu);
342 present_package.move();
344 if (present_package.session().is_closed())
346 Z_APDU *apdu = zget_APDU(odr, Z_APDU_presentResponse);
348 Z_Records *rec = (Z_Records *) odr_malloc(odr, sizeof(Z_Records));
349 apdu->u.presentResponse->records = rec;
350 rec->which = Z_Records_NSD;
351 rec->u.nonSurrogateDiagnostic =
352 zget_DefaultDiagFormat(
354 YAZ_BIB1_RESULT_SET_NO_LONGER_EXISTS_UNILATERALLY_DELETED_BY_,
355 resultSetId.c_str());
356 package.response() = apdu;
358 m_sets.erase(resultSetId);
362 package.response() = present_package.response();
367 void yf::Virt_db::Rep::search(Package &package, Z_APDU *apdu, bool &move_later)
369 Z_SearchRequest *req = apdu->u.searchRequest;
371 std::string database;
372 std::string resultSetId = req->resultSetName;
374 bool support_named_result_sets = false; // whether backend supports it
377 boost::mutex::scoped_lock lock(m_sessions_mutex);
379 Ses_it it = m_sessions.find(package.session());
380 if (it == m_sessions.end())
382 package.response() = odr.create_close(
383 Z_Close_protocolError,
384 "no session for search request");
385 package.session().close();
389 if (it->second.m_use_vhost)
394 if (req->num_databaseNames != 1)
395 { // exactly one database must be specified
396 Z_APDU *apdu = zget_APDU(odr, Z_APDU_searchResponse);
398 Z_Records *rec = (Z_Records *) odr_malloc(odr, sizeof(Z_Records));
399 apdu->u.searchResponse->records = rec;
400 rec->which = Z_Records_NSD;
401 rec->u.nonSurrogateDiagnostic =
402 zget_DefaultDiagFormat(
403 odr, YAZ_BIB1_TOO_MANY_DATABASES_SPECIFIED, 0);
404 package.response() = apdu;
408 database = req->databaseNames[0];
409 std::map<std::string, Virt_db_map>::iterator map_it;
410 map_it = m_maps.find(database);
411 if (map_it == m_maps.end())
412 { // no map for database: return diagnostic
413 Z_APDU *apdu = zget_APDU(odr, Z_APDU_searchResponse);
415 Z_Records *rec = (Z_Records *) odr_malloc(odr, sizeof(Z_Records));
416 apdu->u.searchResponse->records = rec;
417 rec->which = Z_Records_NSD;
418 rec->u.nonSurrogateDiagnostic =
419 zget_DefaultDiagFormat(
420 odr, YAZ_BIB1_DATABASE_DOES_NOT_EXIST, database.c_str());
421 package.response() = apdu;
425 if (*req->replaceIndicator == 0)
427 Sets_it sets_it = it->second.m_sets.find(req->resultSetName);
428 if (sets_it != it->second.m_sets.end())
430 Z_APDU *apdu = zget_APDU(odr, Z_APDU_searchResponse);
432 Z_Records *rec = (Z_Records *) odr_malloc(odr, sizeof(Z_Records));
433 apdu->u.searchResponse->records = rec;
434 rec->which = Z_Records_NSD;
435 rec->u.nonSurrogateDiagnostic =
436 zget_DefaultDiagFormat(
438 YAZ_BIB1_RESULT_SET_EXISTS_AND_REPLACE_INDICATOR_OFF,
440 package.response() = apdu;
445 it->second.m_sets.erase(req->resultSetName);
446 vhost = map_it->second.m_vhost;
447 route = map_it->second.m_route;
449 // we might look for an existing session with same vhost
451 const char *vhost_cstr = vhost.c_str();
453 { // sending init to backend
454 Package init_package(id, package.origin());
455 init_package.copy_filter(package);
457 Z_APDU *init_apdu = zget_APDU(odr, Z_APDU_initRequest);
459 yaz_oi_set_string_oidval(&init_apdu->u.initRequest->otherInfo, odr,
460 VAL_PROXY, 1, vhost_cstr);
462 init_package.request() = init_apdu;
464 init_package.move(route); // sending init
466 if (init_package.session().is_closed())
468 Z_APDU *apdu = zget_APDU(odr, Z_APDU_searchResponse);
470 Z_Records *rec = (Z_Records *) odr_malloc(odr, sizeof(Z_Records));
471 apdu->u.searchResponse->records = rec;
472 rec->which = Z_Records_NSD;
473 rec->u.nonSurrogateDiagnostic =
474 zget_DefaultDiagFormat(
475 odr, YAZ_BIB1_DATABASE_UNAVAILABLE, database.c_str());
476 package.response() = apdu;
478 Z_GDU *gdu = init_package.response().get();
479 // we hope to get an init response
480 if (gdu && gdu->which == Z_GDU_Z3950 && gdu->u.z3950->which ==
483 if (ODR_MASK_GET(gdu->u.z3950->u.initResponse->options,
484 Z_Options_namedResultSets))
485 support_named_result_sets = true;
489 Z_APDU *apdu = zget_APDU(odr, Z_APDU_searchResponse);
491 Z_Records *rec = (Z_Records *) odr_malloc(odr, sizeof(Z_Records));
492 apdu->u.searchResponse->records = rec;
493 rec->which = Z_Records_NSD;
494 rec->u.nonSurrogateDiagnostic =
495 zget_DefaultDiagFormat(
496 odr, YAZ_BIB1_DATABASE_UNAVAILABLE, database.c_str());
497 package.response() = apdu;
502 // sending search to backend
503 Package search_package(id, package.origin());
505 search_package.copy_filter(package);
506 const char *sep = strchr(vhost_cstr, '/');
508 req->databaseNames[0] = odr_strdup(odr, sep+1);
510 *req->replaceIndicator = 1;
512 std::string backend_resultSetId = "default";
513 req->resultSetName = odr_strdup(odr, backend_resultSetId.c_str());
514 search_package.request() = yazpp_1::GDU(apdu);
516 search_package.move(route);
518 if (search_package.session().is_closed())
520 Z_APDU *apdu = zget_APDU(odr, Z_APDU_searchResponse);
522 Z_Records *rec = (Z_Records *) odr_malloc(odr, sizeof(Z_Records));
523 apdu->u.searchResponse->records = rec;
524 rec->which = Z_Records_NSD;
525 rec->u.nonSurrogateDiagnostic =
526 zget_DefaultDiagFormat(
527 odr, YAZ_BIB1_DATABASE_UNAVAILABLE, database.c_str());
528 package.response() = apdu;
532 package.response() = search_package.response();
534 boost::mutex::scoped_lock lock(m_sessions_mutex);
535 Ses_it it = m_sessions.find(package.session());
536 if (it != m_sessions.end())
537 it->second.m_sets[resultSetId] =
538 Virt_db_set(id, backend_resultSetId, vhost, route,
539 support_named_result_sets);
542 void yf::Frontend::search(Package &package, Z_APDU *apdu,
543 const std::map<std::string, Virt_db_map> &maps)
545 Z_SearchRequest *req = apdu->u.searchRequest;
547 std::string database;
548 std::string resultSetId = req->resultSetName;
549 bool support_named_result_sets = false; // whether backend supports it
552 if (req->num_databaseNames != 1)
553 { // exactly one database must be specified
554 Z_APDU *apdu = zget_APDU(odr, Z_APDU_searchResponse);
556 Z_Records *rec = (Z_Records *) odr_malloc(odr, sizeof(Z_Records));
557 apdu->u.searchResponse->records = rec;
558 rec->which = Z_Records_NSD;
559 rec->u.nonSurrogateDiagnostic =
560 zget_DefaultDiagFormat(
561 odr, YAZ_BIB1_TOO_MANY_DATABASES_SPECIFIED, 0);
562 package.response() = apdu;
566 database = req->databaseNames[0];
567 std::map<std::string, Virt_db_map>::const_iterator map_it;
568 map_it = maps.find(database);
569 if (map_it == maps.end())
570 { // no map for database: return diagnostic
571 Z_APDU *apdu = zget_APDU(odr, Z_APDU_searchResponse);
573 Z_Records *rec = (Z_Records *) odr_malloc(odr, sizeof(Z_Records));
574 apdu->u.searchResponse->records = rec;
575 rec->which = Z_Records_NSD;
576 rec->u.nonSurrogateDiagnostic =
577 zget_DefaultDiagFormat(
578 odr, YAZ_BIB1_DATABASE_DOES_NOT_EXIST, database.c_str());
579 package.response() = apdu;
583 if (*req->replaceIndicator == 0)
585 Sets_it sets_it = m_sets.find(req->resultSetName);
586 if (sets_it != m_sets.end())
588 Z_APDU *apdu = zget_APDU(odr, Z_APDU_searchResponse);
590 Z_Records *rec = (Z_Records *) odr_malloc(odr, sizeof(Z_Records));
591 apdu->u.searchResponse->records = rec;
592 rec->which = Z_Records_NSD;
593 rec->u.nonSurrogateDiagnostic =
594 zget_DefaultDiagFormat(
596 YAZ_BIB1_RESULT_SET_EXISTS_AND_REPLACE_INDICATOR_OFF,
598 package.response() = apdu;
603 m_sets.erase(req->resultSetName);
604 vhost = map_it->second.m_vhost;
605 std::string route = map_it->second.m_route;
606 // we might look for an existing session with same vhost
608 const char *vhost_cstr = vhost.c_str();
610 { // sending init to backend
611 Package init_package(id, package.origin());
612 init_package.copy_filter(package);
614 Z_APDU *init_apdu = zget_APDU(odr, Z_APDU_initRequest);
616 yaz_oi_set_string_oidval(&init_apdu->u.initRequest->otherInfo, odr,
617 VAL_PROXY, 1, vhost_cstr);
619 init_package.request() = init_apdu;
621 init_package.move(route); // sending init
623 if (init_package.session().is_closed())
625 Z_APDU *apdu = zget_APDU(odr, Z_APDU_searchResponse);
627 Z_Records *rec = (Z_Records *) odr_malloc(odr, sizeof(Z_Records));
628 apdu->u.searchResponse->records = rec;
629 rec->which = Z_Records_NSD;
630 rec->u.nonSurrogateDiagnostic =
631 zget_DefaultDiagFormat(
632 odr, YAZ_BIB1_DATABASE_UNAVAILABLE, database.c_str());
633 package.response() = apdu;
635 Z_GDU *gdu = init_package.response().get();
636 // we hope to get an init response
637 if (gdu && gdu->which == Z_GDU_Z3950 && gdu->u.z3950->which ==
640 if (ODR_MASK_GET(gdu->u.z3950->u.initResponse->options,
641 Z_Options_namedResultSets))
642 support_named_result_sets = true;
646 Z_APDU *apdu = zget_APDU(odr, Z_APDU_searchResponse);
648 Z_Records *rec = (Z_Records *) odr_malloc(odr, sizeof(Z_Records));
649 apdu->u.searchResponse->records = rec;
650 rec->which = Z_Records_NSD;
651 rec->u.nonSurrogateDiagnostic =
652 zget_DefaultDiagFormat(
653 odr, YAZ_BIB1_DATABASE_UNAVAILABLE, database.c_str());
654 package.response() = apdu;
659 // sending search to backend
660 Package search_package(id, package.origin());
662 search_package.copy_filter(package);
663 const char *sep = strchr(vhost_cstr, '/');
665 req->databaseNames[0] = odr_strdup(odr, sep+1);
667 *req->replaceIndicator = 1;
669 std::string backend_resultSetId = "default";
670 req->resultSetName = odr_strdup(odr, backend_resultSetId.c_str());
671 search_package.request() = yazpp_1::GDU(apdu);
673 search_package.move(route);
675 if (search_package.session().is_closed())
677 Z_APDU *apdu = zget_APDU(odr, Z_APDU_searchResponse);
679 Z_Records *rec = (Z_Records *) odr_malloc(odr, sizeof(Z_Records));
680 apdu->u.searchResponse->records = rec;
681 rec->which = Z_Records_NSD;
682 rec->u.nonSurrogateDiagnostic =
683 zget_DefaultDiagFormat(
684 odr, YAZ_BIB1_DATABASE_UNAVAILABLE, database.c_str());
685 package.response() = apdu;
689 package.response() = search_package.response();
691 m_sets[resultSetId] =
692 Virt_db_set(id, backend_resultSetId, vhost, route,
693 support_named_result_sets);
696 void yf::Virt_db::Rep::init(Package &package, Z_APDU *apdu, bool &move_later)
698 release_session(package);
699 boost::mutex::scoped_lock lock(m_sessions_mutex);
701 Z_InitRequest *req = apdu->u.initRequest;
704 yaz_oi_get_string_oidval(&req->otherInfo, VAL_PROXY, 1, 0);
708 Z_APDU *apdu = zget_APDU(odr, Z_APDU_initResponse);
709 Z_InitResponse *resp = apdu->u.initResponse;
712 static const int masks[] = {
713 Z_Options_search, Z_Options_present, Z_Options_namedResultSets, -1
715 for (i = 0; masks[i] != -1; i++)
716 if (ODR_MASK_GET(req->options, masks[i]))
717 ODR_MASK_SET(resp->options, masks[i]);
719 static const int versions[] = {
725 for (i = 0; versions[i] != -1; i++)
726 if (ODR_MASK_GET(req->protocolVersion, versions[i]))
727 ODR_MASK_SET(resp->protocolVersion, versions[i]);
731 package.response() = apdu;
733 m_sessions[package.session()] = Virt_db_session(package.session(), false);
737 m_sessions[package.session()] = Virt_db_session(package.session(), true);
742 void yf::Virt_db::add_map_db2vhost(std::string db, std::string vhost,
745 m_p->m_maps[db] = Virt_db_map(vhost, route);
749 void yf::Virt_db::process(Package &package) const
751 yf::Frontend *f = m_p->get_frontend(package);
754 Z_GDU *gdu = package.request().get();
756 if (gdu && gdu->which == Z_GDU_Z3950 && gdu->u.z3950->which ==
759 Z_InitRequest *req = gdu->u.z3950->u.initRequest;
762 yaz_oi_get_string_oidval(&req->otherInfo, VAL_PROXY, 1, 0);
766 Z_APDU *apdu = zget_APDU(odr, Z_APDU_initResponse);
767 Z_InitResponse *resp = apdu->u.initResponse;
770 static const int masks[] = {
773 Z_Options_namedResultSets,
776 for (i = 0; masks[i] != -1; i++)
777 if (ODR_MASK_GET(req->options, masks[i]))
778 ODR_MASK_SET(resp->options, masks[i]);
780 static const int versions[] = {
786 for (i = 0; versions[i] != -1; i++)
787 if (ODR_MASK_GET(req->protocolVersion, versions[i]))
788 ODR_MASK_SET(resp->protocolVersion, versions[i]);
792 package.response() = apdu;
793 f->m_is_virtual = true;
798 else if (!f->m_is_virtual)
800 else if (gdu && gdu->which == Z_GDU_Z3950)
802 Z_APDU *apdu = gdu->u.z3950;
803 if (apdu->which == Z_APDU_initRequest)
806 else if (apdu->which == Z_APDU_searchRequest)
808 f->search(package, apdu, m_p->m_maps);
810 else if (apdu->which == Z_APDU_presentRequest)
812 f->present(package, apdu);
818 package.response() = odr.create_close(
819 Z_Close_protocolError,
820 "unsupported APDU in filter_virt_db");
822 package.session().close();
826 m_p->release_frontend(package);
830 void yf::Virt_db::process(Package &package) const
832 Z_GDU *gdu = package.request().get();
834 if (package.session().is_closed())
835 m_p->release_session(package);
836 else if (!gdu || gdu->which != Z_GDU_Z3950)
840 bool move_later = false;
841 Z_APDU *apdu = gdu->u.z3950;
842 if (apdu->which == Z_APDU_initRequest)
844 m_p->init(package, apdu, move_later);
846 else if (apdu->which == Z_APDU_searchRequest)
848 m_p->search(package, apdu, move_later);
850 else if (apdu->which == Z_APDU_presentRequest)
852 m_p->present(package, apdu, move_later);
854 else if (apdu->which == Z_APDU_close)
856 package.session().close();
857 m_p->release_session(package);
863 package.response() = odr.create_close(
864 Z_Close_protocolError,
865 "unsupported APDU in filter_virt_db");
867 package.session().close();
868 m_p->release_session(package);
876 void yp2::filter::Virt_db::configure(const xmlNode * ptr)
878 for (ptr = ptr->children; ptr; ptr = ptr->next)
880 if (ptr->type != XML_ELEMENT_NODE)
882 if (!strcmp((const char *) ptr->name, "virtual"))
884 std::string database;
886 xmlNode *v_node = ptr->children;
887 for (; v_node; v_node = v_node->next)
889 if (v_node->type != XML_ELEMENT_NODE)
892 if (yp2::xml::is_element_yp2(v_node, "database"))
893 database = yp2::xml::get_text(v_node);
894 else if (yp2::xml::is_element_yp2(v_node, "target"))
895 target = yp2::xml::get_text(v_node);
897 throw yp2::filter::FilterException
899 + std::string((const char *) v_node->name)
900 + " in virtual section"
903 std::string route = yp2::xml::get_route(ptr);
904 add_map_db2vhost(database, target, route);
905 std::cout << "Add " << database << "->" << target
906 << "," << route << "\n";
910 throw yp2::filter::FilterException
912 + std::string((const char *) ptr->name)
913 + " in virt_db filter");
918 static yp2::filter::Base* filter_creator()
920 return new yp2::filter::Virt_db;
924 struct yp2_filter_struct yp2_filter_virt_db = {
935 * indent-tabs-mode: nil
936 * c-file-style: "stroustrup"
938 * vim: shiftwidth=4 tabstop=8 expandtab