3 package Koha::Z3950Responder::Session;
5 # Copyright ByWater Solutions 2016
7 # This file is part of Koha.
9 # Koha is free software; you can redistribute it and/or modify it under the
10 # terms of the GNU General Public License as published by the Free Software
11 # Foundation; either version 3 of the License, or (at your option) any later
14 # Koha is distributed in the hope that it will be useful, but WITHOUT ANY
15 # WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
16 # A PARTICULAR PURPOSE. See the GNU General Public License for more details.
18 # You should have received a copy of the GNU General Public License along
19 # with Koha; if not, write to the Free Software Foundation, Inc.,
20 # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
24 use C4::Circulation qw( GetTransfers );
26 use C4::Items qw( GetItem );
27 use C4::Reserves qw( GetReserveStatus );
34 UNIMARC_OID => '1.2.840.10003.5.1',
35 USMARC_OID => '1.2.840.10003.5.10',
36 MARCXML_OID => '1.2.840.10003.5.109.10'
40 ERR_TEMPORARY_ERROR => 2,
41 ERR_PRESENT_OUT_OF_RANGE => 13,
42 ERR_RECORD_TOO_LARGE => 16,
43 ERR_NO_SUCH_RESULTSET => 30,
44 ERR_SYNTAX_UNSUPPORTED => 230,
45 ERR_DB_DOES_NOT_EXIST => 235,
49 my ( $class, $args ) = @_;
53 logger => Koha::Logger->get({ interface => 'z3950' }),
57 if ( $self->{server}->{debug} ) {
58 $self->{logger}->debug_to_screen();
61 $self->_log_info("connected");
67 my ( $self, $msg ) = @_;
68 $self->{logger}->debug("[$self->{peer}] $msg");
72 my ( $self, $msg ) = @_;
73 $self->{logger}->info("[$self->{peer}] $msg");
77 my ( $self, $msg ) = @_;
78 $self->{logger}->error("[$self->{peer}] $msg");
82 my ( $self, $args, $code, $msg ) = @_;
83 ( $args->{ERR_CODE}, $args->{ERR_STR} ) = ( $code, $msg );
85 $self->_log_error(" returning error $code: $msg");
88 sub _set_error_from_zoom {
89 my ( $self, $args, $exception ) = @_;
91 $self->_set_error( $args, ERR_TEMPORARY_ERROR, 'Cannot connect to upstream server' );
93 "Zebra upstream error: " .
94 $exception->message() . " (" .
95 $exception->code() . ") " .
96 ( $exception->addinfo() // '' ) . " " .
101 # This code originally went through C4::Search::getRecords, but had to use so many escape hatches
102 # that it was easier to directly connect to Zebra.
104 my ( $self, $args, $in_retry ) = @_;
106 my $database = $args->{DATABASES}->[0];
107 my ( $connection, $results );
110 $connection = C4::Context->Zconn(
111 # We're depending on the caller to have done some validation.
112 $database eq 'biblios' ? 'biblioserver' : 'authorityserver',
113 0 # No, no async, doesn't really help much for single-server searching
116 $results = $connection->search_pqf( $args->{QUERY} );
118 $self->_log_debug(' retry successful') if ($in_retry);
121 die $@ if ( ref($@) ne 'ZOOM::Exception' );
123 if ( $@->diagset() eq 'ZOOM' && $@->code() == 10004 && !$in_retry ) {
124 $self->_log_debug(' upstream server lost connection, retrying');
125 return $self->_start_search( $args, 1 );
128 _set_error_from_zoom( $args, $@ );
132 return ( $connection, $results, $results ? $results->size() : -1 );
136 my ( $self, $resultset, $args, $offset, $num_records ) = @_;
138 if ( !defined( $resultset ) ) {
139 $self->_set_error( $args, ERR_NO_SUCH_RESULTSET, 'No such resultset' );
143 if ( $offset + $num_records > $resultset->{hits} ) {
144 $self->_set_error( $args, ERR_PRESENT_OUT_OF_RANGE, 'Fetch request out of range' );
152 my ( $self, $resultset, $args, $index, $num_to_prefetch ) = @_;
157 if ( !$resultset->{results}->record_immediate( $index ) ) {
158 my $start = int( $index / $num_to_prefetch ) * $num_to_prefetch;
160 if ( $start + $num_to_prefetch >= $resultset->{results}->size() ) {
161 $num_to_prefetch = $resultset->{results}->size() - $start;
164 $self->_log_debug(" fetch uncached, fetching $num_to_prefetch records starting at $start");
166 $resultset->{results}->records( $start, $num_to_prefetch, 0 );
169 $record = $resultset->{results}->record_immediate( $index )->raw();
172 die $@ if ( ref($@) ne 'ZOOM::Exception' );
173 $self->_set_error_from_zoom( $args, $@ );
181 # Called when search is first sent.
182 my ( $self, $args ) = @_;
184 my $database = $args->{DATABASES}->[0];
186 if ( $database !~ /^(biblios|authorities)$/ ) {
187 $self->_set_error( ERR_DB_DOES_NOT_EXIST, 'No such database' );
191 my $query = $args->{QUERY};
192 $self->_log_info("received search for '$query', (RS $args->{SETNAME})");
194 my ( $connection, $results, $num_hits ) = $self->_start_search( $args );
195 return unless $connection;
197 $args->{HITS} = $num_hits;
198 my $resultset = $self->{resultsets}->{ $args->{SETNAME} } = {
199 database => $database,
200 connection => $connection,
202 query => $args->{QUERY},
203 hits => $args->{HITS},
207 sub present_handler {
208 # Called when a set of records is requested.
209 my ( $self, $args ) = @_;
211 $self->_log_debug("received present for $args->{SETNAME}, $args->{START}+$args->{NUMBER}");
213 my $resultset = $self->{resultsets}->{ $args->{SETNAME} };
214 # The offset comes across 1-indexed.
215 my $offset = $args->{START} - 1;
217 return unless $self->_check_fetch( $resultset, $args, $offset, $args->{NUMBER} );
222 # Called when a given record is requested.
223 my ( $self, $args ) = @_;
224 my $session = $args->{HANDLE};
225 my $server = $self->{server};
227 $self->_log_debug("received fetch for $args->{SETNAME}, record $args->{OFFSET}");
228 my $form_oid = $args->{REQ_FORM} // '';
229 my $composition = $args->{COMP} // '';
230 $self->_log_debug(" form OID $form_oid, composition $composition");
232 my $resultset = $session->{resultsets}->{ $args->{SETNAME} };
233 # The offset comes across 1-indexed.
234 my $offset = $args->{OFFSET} - 1;
236 return unless $self->_check_fetch( $resultset, $args, $offset, 1 );
238 $args->{LAST} = 1 if ( $offset == $resultset->{hits} - 1 );
240 my $record = $self->_fetch_record( $resultset, $args, $offset, $server->{num_to_prefetch} );
241 return unless $record;
243 $record = C4::Search::new_record_from_zebra(
244 $resultset->{database} eq 'biblios' ? 'biblioserver' : 'authorityserver',
248 if ( $server->{add_item_status_subfield} ) {
249 my $tag = $server->{item_tag};
251 foreach my $field ( $record->field($tag) ) {
252 $self->add_item_status( $field );
256 if ( $form_oid eq MARCXML_OID && $composition eq 'marcxml' ) {
257 $args->{RECORD} = $record->as_xml_record();
258 } elsif ( ( $form_oid eq USMARC_OID || $form_oid eq UNIMARC_OID ) && ( !$composition || $composition eq 'F' ) ) {
259 $args->{RECORD} = $record->as_usmarc();
261 $self->_set_error( $args, ERR_SYNTAX_UNSUPPORTED, "Unsupported syntax/composition $form_oid/$composition" );
266 sub add_item_status {
267 my ( $self, $field ) = @_;
269 my $server = $self->{server};
271 my $itemnumber_subfield = $server->{itemnumber_subfield};
272 my $add_subfield = $server->{add_item_status_subfield};
273 my $status_strings = $server->{status_strings};
275 my $itemnumber = $field->subfield($itemnumber_subfield);
276 next unless $itemnumber;
278 my $item = GetItem( $itemnumber );
283 if ( $item->{onloan} ) {
284 push @statuses, $status_strings->{CHECKED_OUT};
287 if ( $item->{itemlost} ) {
288 push @statuses, $status_strings->{LOST};
291 if ( $item->{notforloan} ) {
292 push @statuses, $status_strings->{NOT_FOR_LOAN};
295 if ( $item->{damaged} ) {
296 push @statuses, $status_strings->{DAMAGED};
299 if ( $item->{withdrawn} ) {
300 push @statuses, $status_strings->{WITHDRAWN};
303 if ( scalar( GetTransfers( $itemnumber ) ) ) {
304 push @statuses, $status_strings->{IN_TRANSIT};
307 if ( GetReserveStatus( $itemnumber ) ne '' ) {
308 push @statuses, $status_strings->{ON_HOLD};
311 $field->delete_subfield( code => $itemnumber_subfield );
313 if ( $server->{add_status_multi_subfield} ) {
314 $field->add_subfields( map { ( $add_subfield, $_ ) } ( @statuses ? @statuses : $status_strings->{AVAILABLE} ) );
316 $field->add_subfields( $add_subfield, @statuses ? join( ', ', @statuses ) : $status_strings->{AVAILABLE} );
321 my ( $self, $args ) = @_;
323 foreach my $resultset ( values %{ $self->{resultsets} } ) {
324 $resultset->{results}->destroy();