-/* $Id: filter_virt_db.cpp,v 1.1 2005-10-24 14:33:30 adam Exp $
+/* $Id: filter_virt_db.cpp,v 1.6 2005-10-25 21:32:01 adam Exp $
Copyright (c) 2005, Index Data.
%LICENSE%
#include <yaz/diagbib1.h>
#include <list>
+#include <map>
#include <iostream>
namespace yf = yp2::filter;
namespace yp2 {
namespace filter {
+ struct Virt_db_set {
+ Virt_db_set(yp2::Session &id, std::string setname,
+ std::string vhost);
+ Virt_db_set();
+ ~Virt_db_set();
+
+ yp2::Session m_session;
+ std::string m_setname;
+ std::string m_vhost;
+ };
struct Virt_db_session {
Virt_db_session(yp2::Session &id, bool use_vhost);
+ Virt_db_session();
yp2::Session m_session;
bool m_use_vhost;
+ std::map<std::string,Virt_db_set> m_sets;
};
struct Virt_db_map {
- Virt_db_map(std::string database, std::string vhost);
- std::string m_database;
+ Virt_db_map(std::string vhost);
+ Virt_db_map();
std::string m_vhost;
};
class Virt_db::Rep {
friend class Virt_db;
void release_session(Package &package);
- void init(Package &package, Z_APDU *apdu);
- void search(Package &package, Z_APDU *apdu);
+ void init(Package &package, Z_APDU *apdu, bool &move_later);
+ void search(Package &package, Z_APDU *apdu, bool &move_later);
+ void present(Package &package, Z_APDU *apdu, bool &move_later);
private:
- std::list<Virt_db_session>m_sessions;
- std::list<Virt_db_map>m_maps;
+ boost::mutex m_sessions_mutex;
+ std::map<yp2::Session,Virt_db_session>m_sessions;
+ std::map<std::string, Virt_db_map>m_maps;
+
+ typedef std::map<yp2::Session,Virt_db_session>::iterator Ses_it;
+ typedef std::map<std::string,Virt_db_set>::iterator Sets_it;
};
}
}
-yf::Virt_db_map::Virt_db_map(std::string database, std::string vhost)
- : m_database(database), m_vhost(vhost)
+yf::Virt_db_set::Virt_db_set(yp2::Session &id, std::string setname,
+ std::string vhost)
+ : m_session(id), m_setname(setname), m_vhost(vhost)
+{
+}
+
+
+yf::Virt_db_set::Virt_db_set()
+{
+}
+
+
+yf::Virt_db_set::~Virt_db_set()
+{
+}
+
+yf::Virt_db_map::Virt_db_map(std::string vhost)
+ : m_vhost(vhost)
{
}
+yf::Virt_db_map::Virt_db_map()
+{
+}
+
+yf::Virt_db_session::Virt_db_session()
+ : m_use_vhost(false)
+{
+
+}
+
yf::Virt_db_session::Virt_db_session(yp2::Session &id,
bool use_vhost) :
m_session(id) , m_use_vhost(use_vhost)
void yf::Virt_db::Rep::release_session(Package &package)
{
+ boost::mutex::scoped_lock lock(m_sessions_mutex);
+ m_sessions.erase(package.session());
}
-void yf::Virt_db::Rep::search(Package &package, Z_APDU *apdu)
-{
- Z_SearchRequest *req = apdu->u.searchRequest;
-
- std::list<Virt_db_session>::iterator it;
- for (it = m_sessions.begin(); it != m_sessions.end(); it++)
+void yf::Virt_db::Rep::present(Package &package, Z_APDU *apdu, bool &move_later){
+ Session *id = 0;
+ Z_PresentRequest *req = apdu->u.presentRequest;
{
- if (package.session() == (*it).m_session)
- break;
+ boost::mutex::scoped_lock lock(m_sessions_mutex);
+
+ Ses_it it = m_sessions.find(package.session());
+ if (it == m_sessions.end())
+ {
+ ODR odr = odr_createmem(ODR_ENCODE);
+
+ Z_APDU *apdu = zget_APDU(odr, Z_APDU_close);
+
+ *apdu->u.close->closeReason = Z_Close_protocolError;
+ apdu->u.close->diagnosticInformation =
+ odr_strdup(odr, "no session for present request");
+
+ package.response() = apdu;
+ package.session().close();
+ odr_destroy(odr);
+ assert(false);
+ return;
+ }
+ if (it->second.m_use_vhost)
+ {
+ move_later = true;
+ return;
+ }
+ Sets_it sets_it = it->second.m_sets.find(req->resultSetId);
+ if (sets_it == it->second.m_sets.end())
+ {
+ ODR odr = odr_createmem(ODR_ENCODE);
+ 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_SPECIFIED_RESULT_SET_DOES_NOT_EXIST,
+ req->resultSetId);
+ package.response() = apdu;
+ odr_destroy(odr);
+ return;
+ }
+ id = new yp2::Session(sets_it->second.m_session);
}
- if (it == m_sessions.end())
- return;
- if ((*it).m_use_vhost)
- package.move();
- else
+ ODR odr = odr_createmem(ODR_ENCODE);
+
+ // sending present to backend
+ Package present_package(*id, package.origin());
+ present_package.copy_filter(package);
+
+ req->resultSetId = odr_strdup(odr, "default");
+ present_package.request() = yazpp_1::GDU(apdu);
+
+ odr_destroy(odr);
+
+ present_package.move();
+
+ package.response() = present_package.response();
+ // must check for a closed present session..
+ delete id;
+}
+
+void yf::Virt_db::Rep::search(Package &package, Z_APDU *apdu, bool &move_later)
+{
+ Z_SearchRequest *req = apdu->u.searchRequest;
+ std::string vhost;
+ std::string database;
+ Session *id = 0;
{
- if (req->num_databaseNames != 1)
+ boost::mutex::scoped_lock lock(m_sessions_mutex);
+
+ Ses_it it = m_sessions.find(package.session());
+ if (it == m_sessions.end())
{
ODR odr = odr_createmem(ODR_ENCODE);
+
+ Z_APDU *apdu = zget_APDU(odr, Z_APDU_close);
+
+ *apdu->u.close->closeReason = Z_Close_protocolError;
+ apdu->u.close->diagnosticInformation =
+ odr_strdup(odr, "no session for search request");
+
+ package.response() = apdu;
+ package.session().close();
+ odr_destroy(odr);
+ return;
+ }
+ if (it->second.m_use_vhost)
+ {
+ move_later = true;
+ return;
+ }
+ if (req->num_databaseNames != 1)
+ { // exactly one database must be specified
+ ODR odr = odr_createmem(ODR_ENCODE);
Z_APDU *apdu = zget_APDU(odr, Z_APDU_searchResponse);
Z_Records *rec = (Z_Records *) odr_malloc(odr, sizeof(Z_Records));
package.response() = apdu;
odr_destroy(odr);
+ return;
+ }
+ database = req->databaseNames[0];
+ std::map<std::string, Virt_db_map>::iterator map_it;
+ map_it = m_maps.find(database);
+ if (map_it == m_maps.end())
+ { // no map for database: return diagnostic
+ ODR odr = odr_createmem(ODR_ENCODE);
+ 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;
+
+ odr_destroy(odr);
+ return;
+ }
+ if (*req->replaceIndicator == 0)
+ {
+ Sets_it sets_it = it->second.m_sets.find(req->resultSetName);
+ if (sets_it != it->second.m_sets.end())
+ {
+ ODR odr = odr_createmem(ODR_ENCODE);
+ 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);
+ package.response() = apdu;
+
+ odr_destroy(odr);
+ return;
+ }
}
- const char *database = req->databaseNames[0];
+ vhost = map_it->second.m_vhost;
+ id = new Session;
+
+ it->second.m_sets[req->resultSetName] =
+ Virt_db_set(*id, req->resultSetName, vhost);
}
-}
+ const char *vhost_cstr = vhost.c_str();
+ if (true)
+ { // sending init to backend
+ Package init_package(*id, package.origin());
+ init_package.copy_filter(package);
+
+ ODR odr = odr_createmem(ODR_ENCODE);
+ 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;
+ odr_destroy(odr);
-void yf::Virt_db::Rep::init(Package &package, Z_APDU *apdu)
-{
- std::list<Virt_db_session>::iterator it;
+ init_package.move(); // sending init
- for (it = m_sessions.begin(); it != m_sessions.end(); it++)
- {
- if (package.session() == (*it).m_session)
- break;
+ if (init_package.session().is_closed())
+ {
+ ODR odr = odr_createmem(ODR_ENCODE);
+ 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;
+
+ odr_destroy(odr);
+ return;
+ }
}
- if (it != m_sessions.end())
- m_sessions.erase(it);
+ // sending search to backend
+ Package search_package(*id, package.origin());
+
+ search_package.copy_filter(package);
+ const char *sep = strchr(vhost_cstr, '/');
+ ODR odr = odr_createmem(ODR_ENCODE);
+ if (sep)
+ req->databaseNames[0] = odr_strdup(odr, sep+1);
+
+ *req->replaceIndicator = 1;
+ req->resultSetName = odr_strdup(odr, "default");
+ search_package.request() = yazpp_1::GDU(apdu);
+
+ odr_destroy(odr);
+
+ search_package.move();
+
+ package.response() = search_package.response();
+ // must check for a closed search session..
+ delete id;
+}
+
+void yf::Virt_db::Rep::init(Package &package, Z_APDU *apdu, bool &move_later)
+{
+ release_session(package);
+ boost::mutex::scoped_lock lock(m_sessions_mutex);
Z_InitRequest *req = apdu->u.initRequest;
int i;
static const int masks[] = {
- Z_Options_search, Z_Options_present, 0
+ Z_Options_search, Z_Options_present, Z_Options_namedResultSets, -1
};
- for (i = 0; masks[i]; i++)
+ 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;
odr_destroy(odr);
- m_sessions.push_back(Virt_db_session(package.session(), false));
+ m_sessions[package.session()] = Virt_db_session(package.session(), false);
}
else
{
- m_sessions.push_back(Virt_db_session(package.session(), true));
- package.move();
+ m_sessions[package.session()] = Virt_db_session(package.session(), true);
+ move_later = true;
}
}
void yf::Virt_db::add_map_db2vhost(std::string db, std::string vhost)
{
- m_p->m_maps.push_back(Virt_db_map(db, vhost));
+ m_p->m_maps[db] = Virt_db_map(vhost);
}
void yf::Virt_db::process(Package &package) const
package.move();
else
{
+ bool move_later = false;
Z_APDU *apdu = gdu->u.z3950;
if (apdu->which == Z_APDU_initRequest)
{
- m_p->init(package, apdu);
+ m_p->init(package, apdu, move_later);
}
else if (apdu->which == Z_APDU_searchRequest)
{
- m_p->search(package, apdu);
+ m_p->search(package, apdu, move_later);
+ }
+ else if (apdu->which == Z_APDU_presentRequest)
+ {
+ m_p->present(package, apdu, move_later);
}
else
{
Z_APDU *apdu = zget_APDU(odr, Z_APDU_close);
*apdu->u.close->closeReason = Z_Close_protocolError;
+
+ apdu->u.close->diagnosticInformation =
+ odr_strdup(odr, "unsupported APDU in filter_virt_db");
package.response() = apdu;
package.session().close();
odr_destroy(odr);
}
+ if (move_later)
+ package.move();
}
- m_p->release_session(package);
+ if (package.session().is_closed())
+ m_p->release_session(package);
}
projects / metaproxy-moved-to-github.git / blobdiff