-/* $Id: filter_virt_db.cpp,v 1.22 2006-01-12 14:45:04 adam Exp $
+/* $Id: filter_virt_db.cpp,v 1.35 2006-02-02 11:33:46 adam Exp $
Copyright (c) 2005, Index Data.
%LICENSE%
#include <boost/thread/mutex.hpp>
#include <boost/thread/condition.hpp>
+#include <boost/shared_ptr.hpp>
#include "util.hpp"
#include "filter_virt_db.hpp"
namespace yp2 {
namespace filter {
+
struct Virt_db::Set {
- Set(yp2::Session &id, std::string setname,
- std::string vhost, std::string route,
- bool named_result_sets);
+ Set(BackendPtr b, std::string setname);
Set();
~Set();
- yp2::Session m_backend_session;
- std::string m_backend_setname;
- std::string m_vhost;
- std::string m_route;
- bool m_named_result_sets;
+ BackendPtr m_backend;
+ std::string m_setname;
};
struct Virt_db::Map {
- Map(std::string vhost, std::string route);
+ Map(std::list<std::string> targets, std::string route);
Map();
- std::string m_vhost;
+ std::list<std::string> m_targets;
+ std::string m_route;
+ };
+ struct Virt_db::Backend {
+ yp2::Session m_backend_session;
+ std::list<std::string> m_frontend_databases;
+ std::list<std::string> m_targets;
std::string m_route;
+ bool m_named_result_sets;
+ int m_number_of_sets;
};
struct Virt_db::Frontend {
- Frontend();
+ Frontend(Rep *rep);
~Frontend();
yp2::Session m_session;
bool m_is_virtual;
bool m_in_use;
+ yazpp_1::GDU m_init_gdu;
+ std::list<BackendPtr> m_backend_list;
std::map<std::string,Virt_db::Set> m_sets;
- void search(Package &package, Z_APDU *apdu,
- const std::map<std::string, Virt_db::Map> &maps);
+
+ void search(Package &package, Z_APDU *apdu);
void present(Package &package, Z_APDU *apdu);
+ void scan(Package &package, Z_APDU *apdu);
+
void close(Package &package);
typedef std::map<std::string,Virt_db::Set>::iterator Sets_it;
+
+ BackendPtr lookup_backend_from_databases(
+ std::list<std::string> databases);
+ BackendPtr create_backend_from_databases(
+ std::list<std::string> databases,
+ int &error_code,
+ std::string &failing_database);
+
+ BackendPtr init_backend(std::list<std::string> database,
+ Package &package,
+ int &error_code, std::string &addinfo);
+ Rep *m_p;
};
class Virt_db::Rep {
friend class Virt_db;
+ friend struct Frontend;
- Frontend *get_frontend(Package &package);
+ FrontendPtr get_frontend(Package &package);
void release_frontend(Package &package);
private:
boost::mutex m_sessions_mutex;
boost::mutex m_mutex;
boost::condition m_cond_session_ready;
- std::map<yp2::Session,Frontend *> m_clients;
+ std::map<yp2::Session, FrontendPtr> m_clients;
};
}
}
using namespace yp2;
-yf::Virt_db::Frontend::Frontend()
+yf::Virt_db::BackendPtr yf::Virt_db::Frontend::lookup_backend_from_databases(
+ std::list<std::string> databases)
+{
+ std::list<BackendPtr>::const_iterator map_it;
+ map_it = m_backend_list.begin();
+ for (; map_it != m_backend_list.end(); map_it++)
+ if ((*map_it)->m_frontend_databases == databases)
+ return *map_it;
+ BackendPtr null;
+ return null;
+}
+
+yf::Virt_db::BackendPtr yf::Virt_db::Frontend::create_backend_from_databases(
+ std::list<std::string> databases, int &error_code, std::string &addinfo)
+{
+ BackendPtr b(new Backend);
+ std::list<std::string>::const_iterator db_it = databases.begin();
+
+ b->m_number_of_sets = 0;
+ b->m_frontend_databases = databases;
+ b->m_named_result_sets = false;
+
+ bool first_route = true;
+
+ std::map<std::string,bool> targets_dedup;
+ for (; db_it != databases.end(); db_it++)
+ {
+ std::map<std::string, Virt_db::Map>::iterator map_it;
+ map_it = m_p->m_maps.find(*db_it);
+ if (map_it == m_p->m_maps.end()) // database not found
+ {
+ error_code = YAZ_BIB1_DATABASE_UNAVAILABLE;
+ addinfo = *db_it;
+ BackendPtr ptr;
+ return ptr;
+ }
+ std::list<std::string>::const_iterator t_it =
+ map_it->second.m_targets.begin();
+ for (; t_it != map_it->second.m_targets.end(); t_it++)
+ targets_dedup[*t_it] = true;
+
+ // see if we have a route conflict.
+ if (!first_route && b->m_route != map_it->second.m_route)
+ {
+ // we have a conflict..
+ error_code = YAZ_BIB1_COMBI_OF_SPECIFIED_DATABASES_UNSUPP;
+ BackendPtr ptr;
+ return ptr;
+ }
+ b->m_route = map_it->second.m_route;
+ first_route = false;
+ }
+ std::map<std::string,bool>::const_iterator tm_it = targets_dedup.begin();
+ for (; tm_it != targets_dedup.end(); tm_it++)
+ b->m_targets.push_back(tm_it->first);
+
+ return b;
+}
+
+yf::Virt_db::BackendPtr yf::Virt_db::Frontend::init_backend(
+ std::list<std::string> databases, Package &package,
+ int &error_code, std::string &addinfo)
+{
+ BackendPtr b = create_backend_from_databases(databases, error_code,
+ addinfo);
+ if (!b)
+ return b;
+ Package init_package(b->m_backend_session, package.origin());
+ init_package.copy_filter(package);
+
+ yp2::odr odr;
+
+ Z_APDU *init_apdu = zget_APDU(odr, Z_APDU_initRequest);
+
+ yp2::util::set_vhost_otherinfo(&init_apdu->u.initRequest->otherInfo, odr,
+ b->m_targets);
+ Z_InitRequest *req = init_apdu->u.initRequest;
+
+ // copy stuff from Frontend Init Request
+ Z_GDU *org_gdu = m_init_gdu.get();
+ Z_InitRequest *org_init = org_gdu->u.z3950->u.initRequest;
+
+ req->idAuthentication = org_init->idAuthentication;
+ req->implementationId = org_init->implementationId;
+ req->implementationName = org_init->implementationName;
+ req->implementationVersion = org_init->implementationVersion;
+
+ ODR_MASK_SET(req->options, Z_Options_search);
+ ODR_MASK_SET(req->options, Z_Options_present);
+ ODR_MASK_SET(req->options, Z_Options_namedResultSets);
+ ODR_MASK_SET(req->options, Z_Options_scan);
+
+ ODR_MASK_SET(req->protocolVersion, Z_ProtocolVersion_1);
+ ODR_MASK_SET(req->protocolVersion, Z_ProtocolVersion_2);
+ ODR_MASK_SET(req->protocolVersion, Z_ProtocolVersion_3);
+
+ init_package.request() = init_apdu;
+
+ init_package.move(b->m_route); // sending init
+
+ Z_GDU *gdu = init_package.response().get();
+ // we hope to get an init response
+ if (gdu && gdu->which == Z_GDU_Z3950 && gdu->u.z3950->which ==
+ Z_APDU_initResponse)
+ {
+ Z_InitResponse *res = gdu->u.z3950->u.initResponse;
+ if (ODR_MASK_GET(res->options, Z_Options_namedResultSets))
+ {
+ b->m_named_result_sets = true;
+ }
+ if (!*res->result)
+ {
+ yp2::util::get_init_diagnostics(res, error_code, addinfo);
+ BackendPtr null;
+ return null;
+ }
+ }
+ else
+ {
+ error_code = YAZ_BIB1_DATABASE_UNAVAILABLE;
+ // addinfo = database;
+ BackendPtr null;
+ return null;
+ }
+ if (init_package.session().is_closed())
+ {
+ error_code = YAZ_BIB1_DATABASE_UNAVAILABLE;
+ // addinfo = database;
+ BackendPtr null;
+ return null;
+ }
+
+ m_backend_list.push_back(b);
+ return b;
+}
+
+void yf::Virt_db::Frontend::search(Package &package, Z_APDU *apdu_req)
+{
+ Z_SearchRequest *req = apdu_req->u.searchRequest;
+ std::string vhost;
+ std::string resultSetId = req->resultSetName;
+ yp2::odr odr;
+
+ std::list<std::string> databases;
+ int i;
+ for (i = 0; i<req->num_databaseNames; i++)
+ databases.push_back(req->databaseNames[i]);
+
+ BackendPtr b; // null for now
+ Sets_it sets_it = m_sets.find(req->resultSetName);
+ if (sets_it != m_sets.end())
+ {
+ // result set already exist
+ // if replace indicator is off: we return diagnostic if
+ // result set already exist.
+ if (*req->replaceIndicator == 0)
+ {
+ Z_APDU *apdu =
+ odr.create_searchResponse(
+ apdu_req,
+ YAZ_BIB1_RESULT_SET_EXISTS_AND_REPLACE_INDICATOR_OFF,
+ 0);
+ package.response() = apdu;
+
+ return;
+ }
+ sets_it->second.m_backend->m_number_of_sets--;
+
+ // pick up any existing backend with a database match
+ std::list<BackendPtr>::const_iterator map_it;
+ map_it = m_backend_list.begin();
+ for (; map_it != m_backend_list.end(); map_it++)
+ {
+ BackendPtr tmp = *map_it;
+ if (tmp->m_frontend_databases == databases)
+ break;
+ }
+ if (map_it != m_backend_list.end())
+ b = *map_it;
+ }
+ else
+ {
+ // new result set.
+
+ // pick up any existing database with named result sets ..
+ // or one which has no result sets.. yet.
+ std::list<BackendPtr>::const_iterator map_it;
+ map_it = m_backend_list.begin();
+ for (; map_it != m_backend_list.end(); map_it++)
+ {
+ BackendPtr tmp = *map_it;
+ if (tmp->m_frontend_databases == databases &&
+ (tmp->m_named_result_sets ||
+ tmp->m_number_of_sets == 0))
+ break;
+ }
+ if (map_it != m_backend_list.end())
+ b = *map_it;
+ }
+ if (!b) // no backend yet. Must create a new one
+ {
+ int error_code;
+ std::string addinfo;
+ b = init_backend(databases, package, error_code, addinfo);
+ if (!b)
+ {
+ // did not get a backend (unavailable somehow?)
+
+ Z_APDU *apdu =
+ odr.create_searchResponse(
+ apdu_req, error_code, addinfo.c_str());
+ package.response() = apdu;
+ return;
+ }
+ }
+ m_sets.erase(req->resultSetName);
+ // sending search to backend
+ Package search_package(b->m_backend_session, package.origin());
+
+ search_package.copy_filter(package);
+
+ std::string backend_setname;
+ if (b->m_named_result_sets)
+ {
+ backend_setname = std::string(req->resultSetName);
+ }
+ else
+ {
+ backend_setname = "default";
+ req->resultSetName = odr_strdup(odr, backend_setname.c_str());
+ }
+
+ // pick first targets spec and move the databases from it ..
+ std::list<std::string>::const_iterator t_it = b->m_targets.begin();
+ if (t_it != b->m_targets.end())
+ {
+ yp2::util::set_databases_from_zurl(odr, *t_it,
+ &req->num_databaseNames,
+ &req->databaseNames);
+ }
+
+ *req->replaceIndicator = 1;
+
+ search_package.request() = yazpp_1::GDU(apdu_req);
+
+ search_package.move(b->m_route);
+
+ if (search_package.session().is_closed())
+ {
+ package.response() = search_package.response();
+ package.session().close();
+ return;
+ }
+ package.response() = search_package.response();
+
+ b->m_number_of_sets++;
+
+ m_sets[resultSetId] = Virt_db::Set(b, backend_setname);
+}
+
+yf::Virt_db::Frontend::Frontend(Rep *rep)
{
+ m_p = rep;
m_is_virtual = false;
}
void yf::Virt_db::Frontend::close(Package &package)
{
- Sets_it sit = m_sets.begin();
- for (; sit != m_sets.end(); sit++)
+ std::list<BackendPtr>::const_iterator b_it;
+
+ for (b_it = m_backend_list.begin(); b_it != m_backend_list.end(); b_it++)
{
- sit->second.m_backend_session.close();
- Package close_package(sit->second.m_backend_session, package.origin());
+ (*b_it)->m_backend_session.close();
+ Package close_package((*b_it)->m_backend_session, package.origin());
close_package.copy_filter(package);
- close_package.move(sit->second.m_route);
+ close_package.move((*b_it)->m_route);
}
- m_sets.clear();
+ m_backend_list.clear();
}
yf::Virt_db::Frontend::~Frontend()
{
}
-yf::Virt_db::Frontend *yf::Virt_db::Rep::get_frontend(Package &package)
+yf::Virt_db::FrontendPtr yf::Virt_db::Rep::get_frontend(Package &package)
{
boost::mutex::scoped_lock lock(m_mutex);
- std::map<yp2::Session,yf::Virt_db::Frontend *>::iterator it;
+ std::map<yp2::Session,yf::Virt_db::FrontendPtr>::iterator it;
while(true)
{
}
m_cond_session_ready.wait(lock);
}
- Frontend *f = new Frontend;
+ FrontendPtr f(new Frontend(this));
m_clients[package.session()] = f;
f->m_in_use = true;
return f;
}
-
void yf::Virt_db::Rep::release_frontend(Package &package)
{
boost::mutex::scoped_lock lock(m_mutex);
- std::map<yp2::Session,yf::Virt_db::Frontend *>::iterator it;
+ std::map<yp2::Session,yf::Virt_db::FrontendPtr>::iterator it;
it = m_clients.find(package.session());
if (it != m_clients.end())
if (package.session().is_closed())
{
it->second->close(package);
- delete it->second;
m_clients.erase(it);
}
else
}
}
-yf::Virt_db::Set::Set(yp2::Session &id, std::string setname,
- std::string vhost, std::string route,
- bool named_result_sets)
- : m_backend_session(id), m_backend_setname(setname), m_vhost(vhost),
- m_route(route), m_named_result_sets(named_result_sets)
+yf::Virt_db::Set::Set(BackendPtr b, std::string setname)
+ : m_backend(b), m_setname(setname)
{
}
{
}
-yf::Virt_db::Map::Map(std::string vhost, std::string route)
- : m_vhost(vhost), m_route(route)
+yf::Virt_db::Map::Map(std::list<std::string> targets, std::string route)
+ : m_targets(targets), m_route(route)
{
}
yf::Virt_db::~Virt_db() {
}
-void yf::Virt_db::Frontend::present(Package &package, Z_APDU *apdu)
+void yf::Virt_db::Frontend::present(Package &package, Z_APDU *apdu_req)
{
- Session *id = 0;
- Z_PresentRequest *req = apdu->u.presentRequest;
+ Z_PresentRequest *req = apdu_req->u.presentRequest;
std::string resultSetId = req->resultSetId;
yp2::odr odr;
Sets_it sets_it = m_sets.find(resultSetId);
if (sets_it == m_sets.end())
{
- Z_APDU *apdu = zget_APDU(odr, Z_APDU_presentResponse);
-
- Z_Records *rec = (Z_Records *) odr_malloc(odr, sizeof(Z_Records));
- apdu->u.presentResponse->records = rec;
- rec->which = Z_Records_NSD;
- rec->u.nonSurrogateDiagnostic =
- zget_DefaultDiagFormat(
- odr,
+ Z_APDU *apdu =
+ odr.create_presentResponse(
+ apdu_req,
YAZ_BIB1_SPECIFIED_RESULT_SET_DOES_NOT_EXIST,
resultSetId.c_str());
package.response() = apdu;
-
return;
}
- id = new yp2::Session(sets_it->second.m_backend_session);
+ Session *id =
+ new yp2::Session(sets_it->second.m_backend->m_backend_session);
// sending present to backend
Package present_package(*id, package.origin());
present_package.copy_filter(package);
+
+ req->resultSetId = odr_strdup(odr, sets_it->second.m_setname.c_str());
- req->resultSetId = odr_strdup(odr, "default");
- present_package.request() = yazpp_1::GDU(apdu);
+ present_package.request() = yazpp_1::GDU(apdu_req);
- present_package.move();
+ present_package.move(sets_it->second.m_backend->m_route);
if (present_package.session().is_closed())
{
- Z_APDU *apdu = zget_APDU(odr, Z_APDU_presentResponse);
-
- Z_Records *rec = (Z_Records *) odr_malloc(odr, sizeof(Z_Records));
- apdu->u.presentResponse->records = rec;
- rec->which = Z_Records_NSD;
- rec->u.nonSurrogateDiagnostic =
- zget_DefaultDiagFormat(
- odr,
- YAZ_BIB1_RESULT_SET_NO_LONGER_EXISTS_UNILATERALLY_DELETED_BY_,
- resultSetId.c_str());
- package.response() = apdu;
-
- m_sets.erase(resultSetId);
+ package.response() = present_package.response();
+ package.session().close();
+ return;
}
else
{
delete id;
}
-void yf::Virt_db::Frontend::search(Package &package, Z_APDU *apdu,
- const std::map<std::string, Virt_db::Map> &maps)
+void yf::Virt_db::Frontend::scan(Package &package, Z_APDU *apdu_req)
{
- Z_SearchRequest *req = apdu->u.searchRequest;
+ Z_ScanRequest *req = apdu_req->u.scanRequest;
std::string vhost;
- std::string database;
- std::string resultSetId = req->resultSetName;
- bool support_named_result_sets = false; // whether backend supports it
yp2::odr odr;
-
- if (req->num_databaseNames != 1)
- { // exactly one database must be specified
- Z_APDU *apdu = zget_APDU(odr, Z_APDU_searchResponse);
-
- Z_Records *rec = (Z_Records *) odr_malloc(odr, sizeof(Z_Records));
- apdu->u.searchResponse->records = rec;
- rec->which = Z_Records_NSD;
- rec->u.nonSurrogateDiagnostic =
- zget_DefaultDiagFormat(
- odr, YAZ_BIB1_TOO_MANY_DATABASES_SPECIFIED, 0);
- package.response() = apdu;
-
- return;
- }
- database = req->databaseNames[0];
- std::map<std::string, Virt_db::Map>::const_iterator map_it;
- map_it = maps.find(database);
- if (map_it == maps.end())
- { // no map for database: return diagnostic
- Z_APDU *apdu = zget_APDU(odr, Z_APDU_searchResponse);
-
- Z_Records *rec = (Z_Records *) odr_malloc(odr, sizeof(Z_Records));
- apdu->u.searchResponse->records = rec;
- rec->which = Z_Records_NSD;
- rec->u.nonSurrogateDiagnostic =
- zget_DefaultDiagFormat(
- odr, YAZ_BIB1_DATABASE_DOES_NOT_EXIST, database.c_str());
- package.response() = apdu;
-
- return;
+
+ std::list<std::string> databases;
+ int i;
+ for (i = 0; i<req->num_databaseNames; i++)
+ databases.push_back(req->databaseNames[i]);
+
+ BackendPtr b;
+ // pick up any existing backend with a database match
+ std::list<BackendPtr>::const_iterator map_it;
+ map_it = m_backend_list.begin();
+ for (; map_it != m_backend_list.end(); map_it++)
+ {
+ BackendPtr tmp = *map_it;
+ if (tmp->m_frontend_databases == databases)
+ break;
}
- if (*req->replaceIndicator == 0)
+ if (map_it != m_backend_list.end())
+ b = *map_it;
+ if (!b) // no backend yet. Must create a new one
{
- Sets_it sets_it = m_sets.find(req->resultSetName);
- if (sets_it != m_sets.end())
+ int error_code;
+ std::string addinfo;
+ b = init_backend(databases, package, error_code, addinfo);
+ if (!b)
{
- Z_APDU *apdu = zget_APDU(odr, Z_APDU_searchResponse);
-
- Z_Records *rec = (Z_Records *) odr_malloc(odr, sizeof(Z_Records));
- apdu->u.searchResponse->records = rec;
- rec->which = Z_Records_NSD;
- rec->u.nonSurrogateDiagnostic =
- zget_DefaultDiagFormat(
- odr,
- YAZ_BIB1_RESULT_SET_EXISTS_AND_REPLACE_INDICATOR_OFF,
- 0);
+ // did not get a backend (unavailable somehow?)
+ Z_APDU *apdu =
+ odr.create_scanResponse(
+ apdu_req, error_code, addinfo.c_str());
package.response() = apdu;
return;
}
}
- m_sets.erase(req->resultSetName);
- vhost = map_it->second.m_vhost;
- std::string route = map_it->second.m_route;
- // we might look for an existing session with same vhost
- Session id;
- const char *vhost_cstr = vhost.c_str();
- if (true)
- { // sending init to backend
- Package init_package(id, package.origin());
- init_package.copy_filter(package);
-
- Z_APDU *init_apdu = zget_APDU(odr, Z_APDU_initRequest);
-
- yaz_oi_set_string_oidval(&init_apdu->u.initRequest->otherInfo, odr,
- VAL_PROXY, 1, vhost_cstr);
-
- init_package.request() = init_apdu;
+ // sending scan to backend
+ Package scan_package(b->m_backend_session, package.origin());
- init_package.move(route); // sending init
+ scan_package.copy_filter(package);
- if (init_package.session().is_closed())
- {
- Z_APDU *apdu = zget_APDU(odr, Z_APDU_searchResponse);
-
- Z_Records *rec = (Z_Records *) odr_malloc(odr, sizeof(Z_Records));
- apdu->u.searchResponse->records = rec;
- rec->which = Z_Records_NSD;
- rec->u.nonSurrogateDiagnostic =
- zget_DefaultDiagFormat(
- odr, YAZ_BIB1_DATABASE_UNAVAILABLE, database.c_str());
- package.response() = apdu;
- }
- Z_GDU *gdu = init_package.response().get();
- // we hope to get an init response
- if (gdu && gdu->which == Z_GDU_Z3950 && gdu->u.z3950->which ==
- Z_APDU_initResponse)
- {
- if (ODR_MASK_GET(gdu->u.z3950->u.initResponse->options,
- Z_Options_namedResultSets))
- support_named_result_sets = true;
- }
- else
- {
- Z_APDU *apdu = zget_APDU(odr, Z_APDU_searchResponse);
-
- Z_Records *rec = (Z_Records *) odr_malloc(odr, sizeof(Z_Records));
- apdu->u.searchResponse->records = rec;
- rec->which = Z_Records_NSD;
- rec->u.nonSurrogateDiagnostic =
- zget_DefaultDiagFormat(
- odr, YAZ_BIB1_DATABASE_UNAVAILABLE, database.c_str());
- package.response() = apdu;
-
- return;
- }
+ // pick first targets spec and move the databases from it ..
+ std::list<std::string>::const_iterator t_it = b->m_targets.begin();
+ if (t_it != b->m_targets.end())
+ {
+ yp2::util::set_databases_from_zurl(odr, *t_it,
+ &req->num_databaseNames,
+ &req->databaseNames);
}
- // sending search to backend
- Package search_package(id, package.origin());
-
- search_package.copy_filter(package);
- const char *sep = strchr(vhost_cstr, '/');
- if (sep)
- req->databaseNames[0] = odr_strdup(odr, sep+1);
-
- *req->replaceIndicator = 1;
-
- std::string backend_resultSetId = "default";
- req->resultSetName = odr_strdup(odr, backend_resultSetId.c_str());
- search_package.request() = yazpp_1::GDU(apdu);
+ scan_package.request() = yazpp_1::GDU(apdu_req);
- search_package.move(route);
+ scan_package.move(b->m_route);
- if (search_package.session().is_closed())
+ if (scan_package.session().is_closed())
{
- Z_APDU *apdu = zget_APDU(odr, Z_APDU_searchResponse);
-
- Z_Records *rec = (Z_Records *) odr_malloc(odr, sizeof(Z_Records));
- apdu->u.searchResponse->records = rec;
- rec->which = Z_Records_NSD;
- rec->u.nonSurrogateDiagnostic =
- zget_DefaultDiagFormat(
- odr, YAZ_BIB1_DATABASE_UNAVAILABLE, database.c_str());
- package.response() = apdu;
-
+ package.response() = scan_package.response();
+ package.session().close();
return;
}
- package.response() = search_package.response();
-
- m_sets[resultSetId] =
- Virt_db::Set(id, backend_resultSetId, vhost, route,
- support_named_result_sets);
+ package.response() = scan_package.response();
+}
+
+
+void yf::Virt_db::add_map_db2targets(std::string db,
+ std::list<std::string> targets,
+ std::string route)
+{
+ m_p->m_maps[db] = Virt_db::Map(targets, route);
}
-void yf::Virt_db::add_map_db2vhost(std::string db, std::string vhost,
- std::string route)
+
+void yf::Virt_db::add_map_db2target(std::string db,
+ std::string target,
+ std::string route)
{
- m_p->m_maps[db] = Virt_db::Map(vhost, route);
+ std::list<std::string> targets;
+ targets.push_back(target);
+
+ m_p->m_maps[db] = Virt_db::Map(targets, route);
}
void yf::Virt_db::process(Package &package) const
{
- yf::Virt_db::Frontend *f = m_p->get_frontend(package);
- if (f)
+ FrontendPtr f = m_p->get_frontend(package);
+
+ Z_GDU *gdu = package.request().get();
+
+ if (gdu && gdu->which == Z_GDU_Z3950 && gdu->u.z3950->which ==
+ Z_APDU_initRequest && !f->m_is_virtual)
{
- Z_GDU *gdu = package.request().get();
+ Z_InitRequest *req = gdu->u.z3950->u.initRequest;
- if (gdu && gdu->which == Z_GDU_Z3950 && gdu->u.z3950->which ==
- Z_APDU_initRequest && !f->m_is_virtual)
+ std::list<std::string> vhosts;
+ yp2::util::get_vhost_otherinfo(&req->otherInfo, false, vhosts);
+ if (vhosts.size() == 0)
{
- Z_InitRequest *req = gdu->u.z3950->u.initRequest;
-
- const char *vhost =
- yaz_oi_get_string_oidval(&req->otherInfo, VAL_PROXY, 1, 0);
- if (!vhost)
- {
- yp2::odr odr;
- Z_APDU *apdu = zget_APDU(odr, Z_APDU_initResponse);
- Z_InitResponse *resp = apdu->u.initResponse;
-
- int i;
- static const int masks[] = {
- Z_Options_search,
- Z_Options_present,
- Z_Options_namedResultSets,
- -1
- };
- for (i = 0; masks[i] != -1; i++)
- if (ODR_MASK_GET(req->options, masks[i]))
- ODR_MASK_SET(resp->options, masks[i]);
-
- static const int versions[] = {
- Z_ProtocolVersion_1,
- Z_ProtocolVersion_2,
- Z_ProtocolVersion_3,
- -1
- };
- for (i = 0; versions[i] != -1; i++)
- if (ODR_MASK_GET(req->protocolVersion, versions[i]))
- ODR_MASK_SET(resp->protocolVersion, versions[i]);
- else
- break;
-
- package.response() = apdu;
- f->m_is_virtual = true;
- }
- else
- package.move();
+ f->m_init_gdu = gdu;
+
+ yp2::odr odr;
+ Z_APDU *apdu = odr.create_initResponse(gdu->u.z3950, 0, 0);
+ Z_InitResponse *resp = apdu->u.initResponse;
+
+ int i;
+ static const int masks[] = {
+ Z_Options_search,
+ Z_Options_present,
+ Z_Options_namedResultSets,
+ Z_Options_scan,
+ -1
+ };
+ for (i = 0; masks[i] != -1; i++)
+ if (ODR_MASK_GET(req->options, masks[i]))
+ ODR_MASK_SET(resp->options, masks[i]);
+
+ static const int versions[] = {
+ Z_ProtocolVersion_1,
+ Z_ProtocolVersion_2,
+ Z_ProtocolVersion_3,
+ -1
+ };
+ for (i = 0; versions[i] != -1; i++)
+ if (ODR_MASK_GET(req->protocolVersion, versions[i]))
+ ODR_MASK_SET(resp->protocolVersion, versions[i]);
+ else
+ break;
+
+ package.response() = apdu;
+ f->m_is_virtual = true;
}
- else if (!f->m_is_virtual)
+ else
package.move();
- else if (gdu && gdu->which == Z_GDU_Z3950)
+ }
+ else if (!f->m_is_virtual)
+ package.move();
+ else if (gdu && gdu->which == Z_GDU_Z3950)
+ {
+ Z_APDU *apdu = gdu->u.z3950;
+ if (apdu->which == Z_APDU_initRequest)
{
- Z_APDU *apdu = gdu->u.z3950;
- if (apdu->which == Z_APDU_initRequest)
- {
- yp2::odr odr;
-
- package.response() = odr.create_close(
- Z_Close_protocolError,
- "double init");
-
- package.session().close();
- }
- else if (apdu->which == Z_APDU_searchRequest)
- {
- f->search(package, apdu, m_p->m_maps);
- }
- else if (apdu->which == Z_APDU_presentRequest)
- {
- f->present(package, apdu);
- }
- else
- {
- yp2::odr odr;
-
- package.response() = odr.create_close(
- Z_Close_protocolError,
- "unsupported APDU in filter_virt_db");
-
- package.session().close();
- }
+ yp2::odr odr;
+
+ package.response() = odr.create_close(
+ apdu,
+ Z_Close_protocolError,
+ "double init");
+
+ package.session().close();
+ }
+ else if (apdu->which == Z_APDU_searchRequest)
+ {
+ f->search(package, apdu);
+ }
+ else if (apdu->which == Z_APDU_presentRequest)
+ {
+ f->present(package, apdu);
+ }
+ else if (apdu->which == Z_APDU_scanRequest)
+ {
+ f->scan(package, apdu);
+ }
+ else
+ {
+ yp2::odr odr;
+
+ package.response() = odr.create_close(
+ apdu, Z_Close_protocolError,
+ "unsupported APDU in filter_virt_db");
+
+ package.session().close();
}
}
m_p->release_frontend(package);
if (!strcmp((const char *) ptr->name, "virtual"))
{
std::string database;
- std::string target;
+ std::list<std::string> targets;
xmlNode *v_node = ptr->children;
for (; v_node; v_node = v_node->next)
{
if (yp2::xml::is_element_yp2(v_node, "database"))
database = yp2::xml::get_text(v_node);
else if (yp2::xml::is_element_yp2(v_node, "target"))
- target = yp2::xml::get_text(v_node);
+ targets.push_back(yp2::xml::get_text(v_node));
else
throw yp2::filter::FilterException
("Bad element "
);
}
std::string route = yp2::xml::get_route(ptr);
- add_map_db2vhost(database, target, route);
- std::cout << "Add " << database << "->" << target
- << "," << route << "\n";
+ add_map_db2targets(database, targets, route);
}
else
{