src/filter_backend_test.cpp

   1 /* $Id: filter_backend_test.cpp,v 1.15 2006-01-17 13:54:36 adam Exp $
   2    Copyright (c) 2005, Index Data.
   3
   4 %LICENSE%
   5  */
   6
   7 #include "config.hpp"
   8
   9 #include "filter.hpp"
  10 #include "package.hpp"
  11 #include "util.hpp"
  12 #include "filter_backend_test.hpp"
  13
  14 #include <stdexcept>
  15 #include <list>
  16 #include <map>
  17 #include <iostream>
  18
  19 #include <boost/thread/mutex.hpp>
  20
  21 #include <yaz/zgdu.h>
  22 #include <yaz/log.h>
  23 #include <yaz/otherinfo.h>
  24 #include <yaz/diagbib1.h>
  25
  26 namespace yf = yp2::filter;
  27
  28 namespace yp2 {
  29     namespace filter {
  30         class Session_info {
  31             int dummy;
  32         };
  33         class Backend_test::Rep {
  34             friend class Backend_test;
  35
  36         private:
  37             bool m_support_named_result_sets;
  38
  39             session_map<Session_info> m_sessions;
  40         };
  41     }
  42 }
  43
  44 using namespace yp2;
  45
  46 yf::Backend_test::Backend_test() : m_p(new Backend_test::Rep) {
  47     m_p->m_support_named_result_sets = false;
  48 }
  49
  50 yf::Backend_test::~Backend_test() {
  51 }
  52
  53 void yf::Backend_test::process(Package &package) const
  54 {
  55     Z_GDU *gdu = package.request().get();
  56
  57     if (!gdu || gdu->which != Z_GDU_Z3950)
  58         package.move();
  59     else
  60     {
  61         Z_APDU *apdu_req = gdu->u.z3950;
  62         Z_APDU *apdu_res = 0;
  63         yp2::odr odr;
  64
  65         if (apdu_req->which != Z_APDU_initRequest &&
  66             !m_p->m_sessions.exist(package.session()))
  67         {
  68             apdu_res = odr.create_close(apdu_req,
  69                                         Z_Close_protocolError,
  70                                         "no init for filter_backend_test");
  71             package.session().close();
  72         }
  73         else if (apdu_req->which == Z_APDU_initRequest)
  74         {
  75             apdu_res = odr.create_initResponse(apdu_req, 0, 0);
  76             Z_InitRequest *req = apdu_req->u.initRequest;
  77             Z_InitResponse *resp = apdu_res->u.initResponse;
  78
  79             int i;
  80             static const int masks[] = {
  81                 Z_Options_search, Z_Options_present, -1
  82             };
  83             for (i = 0; masks[i] != -1; i++)
  84                 if (ODR_MASK_GET(req->options, masks[i]))
  85                     ODR_MASK_SET(resp->options, masks[i]);
  86             if (m_p->m_support_named_result_sets)
  87             {
  88                 if (ODR_MASK_GET(req->options, Z_Options_namedResultSets))
  89                     ODR_MASK_SET(resp->options, Z_Options_namedResultSets);
  90                 else
  91                     m_p->m_support_named_result_sets = false;
  92             }
  93             static const int versions[] = {
  94                 Z_ProtocolVersion_1,
  95                 Z_ProtocolVersion_2,
  96                 Z_ProtocolVersion_3,
  97                 -1
  98             };
  99             for (i = 0; versions[i] != -1; i++)
 100                 if (ODR_MASK_GET(req->protocolVersion, versions[i]))
 101                     ODR_MASK_SET(resp->protocolVersion, versions[i]);
 102                 else
 103                     break;
 104
 105             Session_info info;
 106             m_p->m_sessions.create(info, package.session());
 107         }
 108         else if (apdu_req->which == Z_APDU_searchRequest)
 109         {
 110             apdu_res = odr.create_searchResponse(apdu_req, 0, 0);
 111             Z_SearchRequest *req = apdu_req->u.searchRequest;
 112             Z_SearchResponse *resp = apdu_res->u.searchResponse;
 113
 114             if (!m_p->m_support_named_result_sets &&
 115                 strcmp(req->resultSetName, "default"))
 116             {
 117                 Z_Records *rec = (Z_Records *)
 118                     odr_malloc(odr, sizeof(Z_Records));
 119                 resp->records = rec;
 120                 rec->which = Z_Records_NSD;
 121                 rec->u.nonSurrogateDiagnostic =
 122                     zget_DefaultDiagFormat(
 123                         odr, YAZ_BIB1_RESULT_SET_NAMING_UNSUPP, 0);
 124             }
 125             else
 126                 *resp->resultCount = 42;
 127         }
 128         else if (apdu_req->which == Z_APDU_presentRequest)
 129         {
 130             apdu_res =
 131                 odr.create_presentResponse(
 132                     apdu_req,
 133                     YAZ_BIB1_TEMPORARY_SYSTEM_ERROR,
 134                     "backend_test: present not implemented");
 135         }
 136         else
 137         {
 138             apdu_res = odr.create_close(apdu_req,
 139                                         Z_Close_protocolError,
 140                                         "backend_test: unhandled APDU");
 141             package.session().close();
 142         }
 143         if (apdu_res)
 144             package.response() = apdu_res;
 145     }
 146     if (package.session().is_closed())
 147         m_p->m_sessions.release(package.session());
 148 }
 149
 150 static yp2::filter::Base* filter_creator()
 151 {
 152     return new yp2::filter::Backend_test;
 153 }
 154
 155 extern "C" {
 156     struct yp2_filter_struct yp2_filter_backend_test = {
 157         0,
 158         "backend_test",
 159         filter_creator
 160     };
 161 }
 162
 163
 164 /*
 165  * Local variables:
 166  * c-basic-offset: 4
 167  * indent-tabs-mode: nil
 168  * c-file-style: "stroustrup"
 169  * End:
 170  * vim: shiftwidth=4 tabstop=8 expandtab
 171  */