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 ) = @_;
84 ( $args->{ERR_CODE}, $args->{ERR_STR} ) = ( $code, $msg );
86 $self->_log_error(" returning error $code: $msg");
89 sub _set_error_from_zoom {
90 my ( $self, $args, $exception ) = @_;
92 $self->_set_error( $args, ERR_TEMPORARY_ERROR, 'Cannot connect to upstream server' );
94 "Zebra upstream error: " .
95 $exception->message() . " (" .
96 $exception->code() . ") " .
97 ( $exception->addinfo() // '' ) . " " .
102 # This code originally went through C4::Search::getRecords, but had to use so many escape hatches
103 # that it was easier to directly connect to Zebra.
105 my ( $self, $args, $in_retry ) = @_;
107 my $database = $args->{DATABASES}->[0];
108 my ( $connection, $results );
111 $connection = C4::Context->Zconn(
112 # We're depending on the caller to have done some validation.
113 $database eq 'biblios' ? 'biblioserver' : 'authorityserver',
114 0 # No, no async, doesn't really help much for single-server searching
117 $results = $connection->search_pqf( $args->{QUERY} );
119 $self->_log_debug(' retry successful') if ($in_retry);
122 die $@ if ( ref($@) ne 'ZOOM::Exception' );
124 if ( $@->diagset() eq 'ZOOM' && $@->code() == 10004 && !$in_retry ) {
125 $self->_log_debug(' upstream server lost connection, retrying');
126 return $self->_start_search( $args, 1 );
129 $self->_set_error_from_zoom( $args, $@ );
133 return ( $connection, $results, $results ? $results->size() : -1 );
137 my ( $self, $resultset, $args, $offset, $num_records ) = @_;
139 if ( !defined( $resultset ) ) {
140 $self->_set_error( $args, ERR_NO_SUCH_RESULTSET, 'No such resultset' );
144 if ( $offset < 0 || $offset + $num_records > $resultset->{hits} ) {
145 $self->_set_error( $args, ERR_PRESENT_OUT_OF_RANGE, 'Present request out of range' );
153 my ( $self, $resultset, $args, $index, $num_to_prefetch ) = @_;
158 if ( !$resultset->{results}->record_immediate( $index ) ) {
159 my $start = $num_to_prefetch ? int( $index / $num_to_prefetch ) * $num_to_prefetch : $index;
161 if ( $start + $num_to_prefetch >= $resultset->{results}->size() ) {
162 $num_to_prefetch = $resultset->{results}->size() - $start;
165 $self->_log_debug(" fetch uncached, fetching $num_to_prefetch records starting at $start");
167 $resultset->{results}->records( $start, $num_to_prefetch, 0 );
170 $record = $resultset->{results}->record_immediate( $index )->raw();
173 die $@ if ( ref($@) ne 'ZOOM::Exception' );
174 $self->_set_error_from_zoom( $args, $@ );
182 # Called when search is first sent.
183 my ( $self, $args ) = @_;
185 my $database = $args->{DATABASES}->[0];
187 if ( $database !~ /^(biblios|authorities)$/ ) {
188 $self->_set_error( $args, ERR_DB_DOES_NOT_EXIST, 'No such database' );
192 my $query = $args->{QUERY};
193 $self->_log_info("received search for '$query', (RS $args->{SETNAME})");
195 my ( $connection, $results, $num_hits ) = $self->_start_search( $args );
196 return unless $connection;
198 $args->{HITS} = $num_hits;
199 my $resultset = $self->{resultsets}->{ $args->{SETNAME} } = {
200 database => $database,
201 connection => $connection,
203 query => $args->{QUERY},
204 hits => $args->{HITS},
208 sub present_handler {
209 # Called when a set of records is requested.
210 my ( $self, $args ) = @_;
212 $self->_log_debug("received present for $args->{SETNAME}, $args->{START}+$args->{NUMBER}");
214 my $resultset = $self->{resultsets}->{ $args->{SETNAME} };
215 # The offset comes across 1-indexed.
216 my $offset = $args->{START} - 1;
218 return unless $self->_check_fetch( $resultset, $args, $offset, $args->{NUMBER} );
223 # Called when a given record is requested.
224 my ( $self, $args ) = @_;
225 my $session = $args->{HANDLE};
226 my $server = $self->{server};
228 $self->_log_debug("received fetch for $args->{SETNAME}, record $args->{OFFSET}");
229 my $form_oid = $args->{REQ_FORM} // '';
230 my $composition = $args->{COMP} // '';
231 $self->_log_debug(" form OID $form_oid, composition $composition");
233 my $resultset = $session->{resultsets}->{ $args->{SETNAME} };
234 # The offset comes across 1-indexed.
235 my $offset = $args->{OFFSET} - 1;
237 return unless $self->_check_fetch( $resultset, $args, $offset, 1 );
239 $args->{LAST} = 1 if ( $offset == $resultset->{hits} - 1 );
241 my $record = $self->_fetch_record( $resultset, $args, $offset, $server->{num_to_prefetch} );
242 return unless $record;
244 $record = C4::Search::new_record_from_zebra(
245 $resultset->{database} eq 'biblios' ? 'biblioserver' : 'authorityserver',
249 if ( $server->{add_item_status_subfield} ) {
250 my $tag = $server->{item_tag};
252 foreach my $field ( $record->field($tag) ) {
253 $self->add_item_status( $field );
257 if ( $form_oid eq MARCXML_OID && $composition eq 'marcxml' ) {
258 $args->{RECORD} = $record->as_xml_record();
259 } elsif ( ( $form_oid eq USMARC_OID || $form_oid eq UNIMARC_OID ) && ( !$composition || $composition eq 'F' ) ) {
260 $args->{RECORD} = $record->as_usmarc();
262 $self->_set_error( $args, ERR_SYNTAX_UNSUPPORTED, "Unsupported syntax/composition $form_oid/$composition" );
267 sub add_item_status {
268 my ( $self, $field ) = @_;
270 my $server = $self->{server};
272 my $itemnumber_subfield = $server->{itemnumber_subfield};
273 my $add_subfield = $server->{add_item_status_subfield};
274 my $status_strings = $server->{status_strings};
276 my $itemnumber = $field->subfield($itemnumber_subfield);
277 next unless $itemnumber;
279 my $item = GetItem( $itemnumber );
284 if ( $item->{onloan} ) {
285 push @statuses, $status_strings->{CHECKED_OUT};
288 if ( $item->{itemlost} ) {
289 push @statuses, $status_strings->{LOST};
292 if ( $item->{notforloan} ) {
293 push @statuses, $status_strings->{NOT_FOR_LOAN};
296 if ( $item->{damaged} ) {
297 push @statuses, $status_strings->{DAMAGED};
300 if ( $item->{withdrawn} ) {
301 push @statuses, $status_strings->{WITHDRAWN};
304 if ( scalar( GetTransfers( $itemnumber ) ) ) {
305 push @statuses, $status_strings->{IN_TRANSIT};
308 if ( GetReserveStatus( $itemnumber ) ne '' ) {
309 push @statuses, $status_strings->{ON_HOLD};
312 $field->delete_subfield( code => $itemnumber_subfield );
314 if ( $server->{add_status_multi_subfield} ) {
315 $field->add_subfields( map { ( $add_subfield, $_ ) } ( @statuses ? @statuses : $status_strings->{AVAILABLE} ) );
317 $field->add_subfields( $add_subfield, @statuses ? join( ', ', @statuses ) : $status_strings->{AVAILABLE} );
322 my ( $self, $args ) = @_;
324 foreach my $resultset ( values %{ $self->{resultsets} } ) {
325 $resultset->{results}->destroy();