1 /* This file is part of Pazpar2.
2 Copyright (C) Index Data
4 Pazpar2 is free software; you can redistribute it and/or modify it under
5 the terms of the GNU General Public License as published by the Free
6 Software Foundation; either version 2, or (at your option) any later
9 Pazpar2 is distributed in the hope that it will be useful, but WITHOUT ANY
10 WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
42 #include <yaz/marcdisp.h>
43 #include <yaz/comstack.h>
44 #include <yaz/tcpip.h>
45 #include <yaz/proto.h>
46 #include <yaz/readconf.h>
47 #include <yaz/pquery.h>
48 #include <yaz/otherinfo.h>
49 #include <yaz/yaz-util.h>
51 #include <yaz/query-charset.h>
52 #include <yaz/querytowrbuf.h>
53 #include <yaz/oid_db.h>
54 #include <yaz/diagbib1.h>
55 #include <yaz/snprintf.h>
56 #include <yaz/rpn2cql.h>
57 #include <yaz/rpn2solr.h>
58 #include <yaz/gettimeofday.h>
62 #include <yaz/timing.h>
67 #include "parameters.h"
69 #include "connection.h"
71 #include "relevance.h"
74 #define XDOC_CACHE_SIZE 100
76 static YAZ_MUTEX g_mutex = 0;
77 static int no_clients = 0;
79 static int client_use(int delta)
83 yaz_mutex_create(&g_mutex);
84 yaz_mutex_enter(g_mutex);
87 yaz_mutex_leave(g_mutex);
88 yaz_log(YLOG_DEBUG, "%s clients=%d",
89 delta == 0 ? "" : (delta > 0 ? "INC" : "DEC"), clients);
93 int clients_count(void)
98 /** \brief Represents client state for a connection to one search target */
100 struct session_database *database;
101 struct connection *connection;
102 struct session *session;
103 char *pquery; // Current search
104 char *cqlquery; // used for SRU targets only
105 char *addinfo; // diagnostic info for most resent error
109 int filtered; /* number of records ignored for local filtering */
110 int ingest_failures; /* number of records where XSLT/other failed */
111 int record_failures; /* number of records where ZOOM reported error */
117 struct suggestions *suggestions;
118 enum client_state state;
119 struct show_raw *show_raw;
120 ZOOM_resultset resultset;
124 facet_limits_t facet_limits;
140 int active; // whether this request has been sent to the server
146 void (*error_handler)(void *data, const char *addinfo);
147 void (*record_handler)(void *data, const char *buf, size_t sz);
149 struct show_raw *next;
152 static const char *client_states[] = {
158 "Client_Disconnected"
161 const char *client_get_state_str(struct client *cl)
163 return client_states[cl->state];
166 enum client_state client_get_state(struct client *cl)
171 void client_set_state_nb(struct client *cl, enum client_state st)
176 void client_set_state(struct client *cl, enum client_state st)
179 if (client_is_active(cl))
182 /* If client is going from being active to inactive and all clients
183 are now idle we fire a watch for the session . The assumption is
184 that session is not mutex locked if client is already active */
185 if (was_active && !client_is_active(cl) && cl->session)
188 int no_active = session_active_clients(cl->session);
189 yaz_log(YLOG_DEBUG, "%s: releasing watches on zero active: %d",
190 client_get_id(cl), no_active);
191 if (no_active == 0) {
192 session_alert_watch(cl->session, SESSION_WATCH_SHOW);
193 session_alert_watch(cl->session, SESSION_WATCH_BYTARGET);
194 session_alert_watch(cl->session, SESSION_WATCH_TERMLIST);
195 session_alert_watch(cl->session, SESSION_WATCH_SHOW_PREF);
200 static void client_init_xdoc(struct client *cl)
204 cl->xdoc = xmalloc(sizeof(*cl->xdoc) * XDOC_CACHE_SIZE);
205 for (i = 0; i < XDOC_CACHE_SIZE; i++)
209 static void client_destroy_xdoc(struct client *cl)
214 for (i = 0; i < XDOC_CACHE_SIZE; i++)
216 xmlFreeDoc(cl->xdoc[i]);
220 xmlDoc *client_get_xdoc(struct client *cl, int record_no)
223 if (record_no >= 0 && record_no < XDOC_CACHE_SIZE)
224 return cl->xdoc[record_no];
228 void client_store_xdoc(struct client *cl, int record_no, xmlDoc *xdoc)
231 if (record_no >= 0 && record_no < XDOC_CACHE_SIZE)
233 if (cl->xdoc[record_no])
234 xmlFreeDoc(cl->xdoc[record_no]);
235 cl->xdoc[record_no] = xdoc;
244 static void client_show_raw_error(struct client *cl, const char *addinfo);
246 struct connection *client_get_connection(struct client *cl)
248 return cl->connection;
251 struct session_database *client_get_database(struct client *cl)
256 struct session *client_get_session(struct client *cl)
261 static void client_send_raw_present(struct client *cl);
262 static int nativesyntax_to_type(const char *s, char *type, ZOOM_record rec);
264 static void client_show_immediate(
265 ZOOM_resultset resultset, struct session_database *sdb, int position,
267 void (*error_handler)(void *data, const char *addinfo),
268 void (*record_handler)(void *data, const char *buf, size_t sz),
270 const char *nativesyntax)
279 error_handler(data, "no resultset");
282 rec = ZOOM_resultset_record_immediate(resultset, position-1);
285 error_handler(data, "no record");
288 nativesyntax_to_type(nativesyntax, type, rec);
289 buf = ZOOM_record_get(rec, type, &len);
292 error_handler(data, "no record");
295 record_handler(data, buf, len);
299 int client_show_raw_begin(struct client *cl, int position,
300 const char *syntax, const char *esn,
302 void (*error_handler)(void *data, const char *addinfo),
303 void (*record_handler)(void *data, const char *buf,
306 const char *nativesyntax)
311 nativesyntax = "raw";
314 struct session_database *sdb = client_get_database(cl);
315 nativesyntax = session_setting_oneval(sdb, PZ_NATIVESYNTAX);
319 if (syntax == 0 && esn == 0)
320 client_show_immediate(cl->resultset, client_get_database(cl),
322 error_handler, record_handler,
323 binary, nativesyntax);
326 struct show_raw *rr, **rrp;
332 rr = xmalloc(sizeof(*rr));
333 rr->position = position;
336 rr->error_handler = error_handler;
337 rr->record_handler = record_handler;
340 rr->syntax = xstrdup(syntax);
344 rr->esn = xstrdup(esn);
348 assert(nativesyntax);
349 rr->nativesyntax = xstrdup(nativesyntax);
353 for (rrp = &cl->show_raw; *rrp; rrp = &(*rrp)->next)
357 if (cl->state == Client_Failed)
359 client_show_raw_error(cl, "client failed");
361 else if (cl->state == Client_Disconnected)
363 client_show_raw_error(cl, "client disconnected");
367 client_send_raw_present(cl);
373 static void client_show_raw_delete(struct show_raw *r)
377 xfree(r->nativesyntax);
381 void client_show_raw_remove(struct client *cl, void *data)
383 struct show_raw *rr = data;
384 struct show_raw **rrp = &cl->show_raw;
390 client_show_raw_delete(rr);
394 static void client_show_raw_dequeue(struct client *cl)
396 struct show_raw *rr = cl->show_raw;
398 cl->show_raw = rr->next;
399 client_show_raw_delete(rr);
402 static void client_show_raw_error(struct client *cl, const char *addinfo)
406 cl->show_raw->error_handler(cl->show_raw->data, addinfo);
407 client_show_raw_dequeue(cl);
411 static void client_send_raw_present(struct client *cl)
413 struct session_database *sdb = client_get_database(cl);
414 struct connection *co = client_get_connection(cl);
415 ZOOM_resultset set = cl->resultset;
417 int offset = cl->show_raw->position;
418 const char *syntax = 0;
419 const char *elements = 0;
421 assert(cl->show_raw);
424 yaz_log(YLOG_DEBUG, "%s: trying to present %d record(s) from %d",
425 client_get_id(cl), 1, offset);
427 if (cl->show_raw->syntax)
428 syntax = cl->show_raw->syntax;
430 syntax = session_setting_oneval(sdb, PZ_REQUESTSYNTAX);
431 ZOOM_resultset_option_set(set, "preferredRecordSyntax", syntax);
433 if (cl->show_raw->esn)
434 elements = cl->show_raw->esn;
436 elements = session_setting_oneval(sdb, PZ_ELEMENTS);
437 if (elements && *elements)
438 ZOOM_resultset_option_set(set, "elementSetName", elements);
440 ZOOM_resultset_records(set, 0, offset-1, 1);
441 cl->show_raw->active = 1;
443 connection_continue(co);
446 static int nativesyntax_to_type(const char *s, char *type,
451 if (!strncmp(s, "iso2709", 7))
453 const char *cp = strchr(s, ';');
454 yaz_snprintf(type, 80, "xml; charset=%s", cp ? cp+1 : "marc-8s");
456 else if (!strncmp(s, "txml", 4))
458 const char *cp = strchr(s, ';');
459 yaz_snprintf(type, 80, "txml; charset=%s", cp ? cp+1 : "marc-8s");
461 else /* pass verbatim to ZOOM - including "xml" */
465 else /* attempt to deduce structure */
467 const char *syntax = ZOOM_record_get(rec, "syntax", NULL);
470 if (!strcmp(syntax, "XML"))
475 else if (!strcmp(syntax, "USmarc") || !strcmp(syntax, "MARC21"))
477 strcpy(type, "xml; charset=marc8-s");
487 * TODO Consider thread safety!!!
490 static void client_report_facets(struct client *cl, ZOOM_resultset rs)
492 struct session_database *sdb = client_get_database(cl);
493 ZOOM_facet_field *facets = ZOOM_resultset_facets(rs);
497 struct session *se = client_get_session(cl);
498 int facet_num = ZOOM_resultset_facets_size(rs);
501 for (s = sdb->settings[PZ_FACETMAP]; s; s = s->next)
503 const char *p = strchr(s->name + 3, ':');
504 if (p && p[1] && s->value && s->value[0])
507 p++; /* p now holds logical facet name */
508 for (facet_idx = 0; facet_idx < facet_num; facet_idx++)
510 const char *native_name =
511 ZOOM_facet_field_name(facets[facet_idx]);
512 if (native_name && !strcmp(s->value, native_name))
516 ZOOM_facet_field_term_count(facets[facet_idx]);
517 for (term_idx = 0; term_idx < term_num; term_idx++ )
521 ZOOM_facet_field_get_term(facets[facet_idx],
524 add_facet(se, p, term, freq);
534 static void ingest_raw_record(struct client *cl, ZOOM_record rec)
540 nativesyntax_to_type(cl->show_raw->nativesyntax, type, rec);
541 buf = ZOOM_record_get(rec, type, &len);
542 cl->show_raw->record_handler(cl->show_raw->data, buf, len);
543 client_show_raw_dequeue(cl);
546 void client_check_preferred_watch(struct client *cl)
548 struct session *se = cl->session;
549 yaz_log(YLOG_DEBUG, "client_check_preferred_watch: %s ", client_get_id(cl));
553 /* TODO possible threading issue. Session can have been destroyed */
554 if (session_is_preferred_clients_ready(se)) {
555 session_alert_watch(se, SESSION_WATCH_SHOW_PREF);
558 yaz_log(YLOG_DEBUG, "client_check_preferred_watch: Still locked on preferred targets.");
563 yaz_log(YLOG_WARN, "client_check_preferred_watch: %s. No session!", client_get_id(cl));
567 struct suggestions* client_suggestions_create(const char* suggestions_string);
568 static void client_suggestions_destroy(struct client *cl);
570 void client_search_response(struct client *cl)
572 struct connection *co = cl->connection;
573 ZOOM_connection link = connection_get_link(co);
574 ZOOM_resultset resultset = cl->resultset;
575 struct session *se = client_get_session(cl);
577 const char *error, *addinfo = 0;
579 if (ZOOM_connection_error(link, &error, &addinfo))
582 session_log(se, YLOG_WARN, "%s: Error %s (%s)",
583 client_get_id(cl), error, addinfo);
584 client_set_state(cl, Client_Error);
588 client_report_facets(cl, resultset);
589 cl->record_offset = cl->startrecs;
590 cl->hits = ZOOM_resultset_size(resultset);
591 session_log(se, YLOG_LOG, "%s: hits: " ODR_INT_PRINTF,
592 client_get_id(cl), cl->hits);
594 client_suggestions_destroy(cl);
596 client_suggestions_create(ZOOM_resultset_option_get(
597 resultset, "suggestions"));
601 void client_got_records(struct client *cl)
603 struct session *se = cl->session;
606 if (reclist_get_num_records(se->reclist) > 0)
609 session_alert_watch(se, SESSION_WATCH_SHOW);
610 session_alert_watch(se, SESSION_WATCH_BYTARGET);
611 session_alert_watch(se, SESSION_WATCH_TERMLIST);
612 session_alert_watch(se, SESSION_WATCH_RECORD);
618 static void client_record_ingest(struct client *cl)
620 const char *msg, *addinfo;
622 ZOOM_resultset resultset = cl->resultset;
623 struct session *se = client_get_session(cl);
625 int offset = cl->record_offset + 1; /* 0 versus 1 numbered offsets */
627 xdoc = client_get_xdoc(cl, offset);
632 NMEM nmem = nmem_create();
633 int rc = ingest_xml_record(cl, xdoc, offset, nmem, 1);
636 session_log(se, YLOG_WARN,
637 "%s: #%d: failed to ingest xdoc",
638 client_get_id(cl), offset);
639 cl->ingest_failures++;
646 else if ((rec = ZOOM_resultset_record_immediate(resultset,
649 if (cl->session == 0)
651 else if (ZOOM_record_error(rec, &msg, &addinfo, 0))
653 session_log(se, YLOG_WARN, "Record error %s (%s): %s #%d",
654 msg, addinfo, client_get_id(cl), offset);
655 cl->record_failures++;
659 struct session_database *sdb = client_get_database(cl);
660 NMEM nmem = nmem_create();
664 const char *s = session_setting_oneval(sdb, PZ_NATIVESYNTAX);
665 if (nativesyntax_to_type(s, type, rec))
666 session_log(se, YLOG_WARN, "Failed to determine record type");
667 xmlrec = ZOOM_record_get(rec, type, NULL);
670 const char *rec_syn = ZOOM_record_get(rec, "syntax", NULL);
671 session_log(se, YLOG_WARN, "%s: #%d: ZOOM_record_get failed",
672 client_get_id(cl), offset);
673 session_log(se, YLOG_LOG, "pz:nativesyntax=%s . "
674 "ZOOM record type=%s . Actual record syntax=%s",
675 s ? s : "null", type,
676 rec_syn ? rec_syn : "null");
677 cl->ingest_failures++;
681 /* OK = 0, -1 = failure, -2 = Filtered */
682 int rc = ingest_record(cl, xmlrec, offset, nmem);
685 const char *rec_syn = ZOOM_record_get(rec, "syntax", NULL);
686 session_log(se, YLOG_WARN,
687 "%s: #%d: failed to ingest record",
688 client_get_id(cl), offset);
689 session_log(se, YLOG_LOG, "pz:nativesyntax=%s . "
690 "ZOOM record type=%s . Actual record syntax=%s",
691 s ? s : "null", type,
692 rec_syn ? rec_syn : "null");
693 cl->ingest_failures++;
703 session_log(se, YLOG_WARN, "Got NULL record from %s #%d",
704 client_get_id(cl), offset);
709 void client_record_response(struct client *cl, int *got_records)
711 struct connection *co = cl->connection;
712 ZOOM_connection link = connection_get_link(co);
713 ZOOM_resultset resultset = cl->resultset;
714 const char *error, *addinfo;
716 if (ZOOM_connection_error(link, &error, &addinfo))
718 struct session *se = client_get_session(cl);
719 session_log(se, YLOG_WARN, "%s: Error %s (%s)",
720 client_get_id(cl), error, addinfo);
721 client_set_state(cl, Client_Error);
725 if (cl->show_raw && cl->show_raw->active)
728 if ((rec = ZOOM_resultset_record_immediate(
729 resultset, cl->show_raw->position-1)))
731 cl->show_raw->active = 0;
732 ingest_raw_record(cl, rec);
736 yaz_log(YLOG_WARN, "Expected record, but got NULL, offset=%d",
737 cl->show_raw->position-1);
742 client_record_ingest(cl);
748 int client_reingest(struct client *cl)
750 int i = cl->startrecs;
751 int to = cl->record_offset;
752 cl->record_failures = cl->ingest_failures = cl->filtered = 0;
754 cl->record_offset = i;
756 client_record_ingest(cl);
760 static void client_set_facets_request(struct client *cl, ZOOM_connection link)
762 struct session_database *sdb = client_get_database(cl);
764 WRBUF w = wrbuf_alloc();
768 for (s = sdb->settings[PZ_FACETMAP]; s; s = s->next)
770 const char *p = strchr(s->name + 3, ':');
773 yaz_log(YLOG_WARN, "Malformed facetmap name: %s", s->name);
775 else if (s->value && s->value[0])
777 wrbuf_puts(w, "@attr 1=");
778 yaz_encode_pqf_term(w, s->value, strlen(s->value));
783 yaz_log(YLOG_DEBUG, "using facets str: %s", wrbuf_cstr(w));
784 ZOOM_connection_option_set(link, "facets",
785 wrbuf_len(w) ? wrbuf_cstr(w) : 0);
789 int client_has_facet(struct client *cl, const char *name)
791 struct session_database *sdb = client_get_database(cl);
794 for (s = sdb->settings[PZ_FACETMAP]; s; s = s->next)
796 const char *p = strchr(s->name + 3, ':');
797 if (p && !strcmp(name, p + 1))
803 static const char *get_strategy_plus_sort(struct client *l, const char *field)
805 struct session_database *sdb = client_get_database(l);
808 const char *strategy_plus_sort = 0;
810 for (s = sdb->settings[PZ_SORTMAP]; s; s = s->next)
812 char *p = strchr(s->name + 3, ':');
815 yaz_log(YLOG_WARN, "Malformed sortmap name: %s", s->name);
819 if (!strcmp(p, field))
821 strategy_plus_sort = s->value;
825 return strategy_plus_sort;
828 void client_update_show_stat(struct client *cl, int cmd)
831 cl->show_stat_no = 0;
836 int client_fetch_more(struct client *cl)
838 struct session_database *sdb = client_get_database(cl);
841 int number = cl->hits - cl->record_offset;
843 str = session_setting_oneval(sdb, PZ_EXTENDRECS);
847 extend_recs = atoi(str);
849 yaz_log(YLOG_LOG, "cl=%s show_stat_no=%d got=%d",
850 client_get_id(cl), cl->show_stat_no, cl->record_offset);
851 if (cl->show_stat_no < cl->record_offset)
853 yaz_log(YLOG_LOG, "cl=%s Trying to fetch more", client_get_id(cl));
855 if (number > extend_recs)
856 number = extend_recs;
859 ZOOM_resultset set = cl->resultset;
860 struct connection *co = client_get_connection(cl);
862 str = session_setting_oneval(sdb, PZ_REQUESTSYNTAX);
863 ZOOM_resultset_option_set(set, "preferredRecordSyntax", str);
864 str = session_setting_oneval(sdb, PZ_ELEMENTS);
866 ZOOM_resultset_option_set(set, "elementSetName", str);
868 ZOOM_resultset_records(set, 0, cl->record_offset, number);
869 client_set_state(cl, Client_Working);
870 connection_continue(co);
875 yaz_log(YLOG_LOG, "cl=%s. OK no more in total set", client_get_id(cl));
880 int client_parse_init(struct client *cl, int same_search)
882 cl->same_search = same_search;
887 * TODO consider how to extend the range
889 int client_parse_range(struct client *cl, const char *startrecs,
892 if (maxrecs && atoi(maxrecs) != cl->maxrecs)
895 cl->maxrecs = atoi(maxrecs);
898 if (startrecs && atoi(startrecs) != cl->startrecs)
901 cl->startrecs = atoi(startrecs);
907 int client_start_search(struct client *cl)
909 struct session_database *sdb = client_get_database(cl);
910 struct connection *co = 0;
911 ZOOM_connection link = 0;
912 struct session *se = client_get_session(cl);
914 const char *opt_piggyback = session_setting_oneval(sdb, PZ_PIGGYBACK);
915 const char *opt_queryenc = session_setting_oneval(sdb, PZ_QUERYENCODING);
916 const char *opt_elements = session_setting_oneval(sdb, PZ_ELEMENTS);
917 const char *opt_requestsyn = session_setting_oneval(sdb, PZ_REQUESTSYNTAX);
918 const char *opt_maxrecs = session_setting_oneval(sdb, PZ_MAXRECS);
919 const char *opt_sru = session_setting_oneval(sdb, PZ_SRU);
920 const char *opt_sort = session_setting_oneval(sdb, PZ_SORT);
921 const char *opt_preferred = session_setting_oneval(sdb, PZ_PREFERRED);
922 const char *extra_args = session_setting_oneval(sdb, PZ_EXTRA_ARGS);
923 const char *opt_present_chunk = session_setting_oneval(sdb, PZ_PRESENT_CHUNK);
925 char maxrecs_str[24], startrecs_str[24], present_chunk_str[24];
927 int present_chunk = 20; // Default chunk size
928 int rc_prep_connection;
931 cl->record_failures = cl->ingest_failures = cl->filtered = 0;
933 yaz_gettimeofday(&tval);
936 if (opt_present_chunk && strcmp(opt_present_chunk,"")) {
937 present_chunk = atoi(opt_present_chunk);
938 yaz_log(YLOG_DEBUG, "Present chunk set to %d", present_chunk);
941 client_prep_connection(cl, se->service->z3950_operation_timeout,
942 se->service->z3950_session_timeout,
943 se->service->server->iochan_man,
945 /* Nothing has changed and we already have a result */
946 if (cl->same_search == 1 && rc_prep_connection == 2)
948 session_log(se, YLOG_LOG, "%s: reuse result", client_get_id(cl));
949 client_report_facets(cl, cl->resultset);
950 return client_reingest(cl);
952 else if (!rc_prep_connection)
954 session_log(se, YLOG_LOG, "%s: postponing search: No connection",
956 client_set_state_nb(cl, Client_Working);
959 co = client_get_connection(cl);
961 link = connection_get_link(co);
964 session_log(se, YLOG_LOG, "%s: new search", client_get_id(cl));
966 client_destroy_xdoc(cl);
967 client_init_xdoc(cl);
969 if (extra_args && *extra_args)
970 ZOOM_connection_option_set(link, "extraArgs", extra_args);
973 cl->preferred = atoi(opt_preferred);
975 yaz_log(YLOG_LOG, "Target %s has preferred status: %d",
976 client_get_id(cl), cl->preferred);
980 ZOOM_connection_option_set(link, "piggyback", opt_piggyback);
982 ZOOM_connection_option_set(link, "piggyback", "1");
984 ZOOM_connection_option_set(link, "rpnCharset", opt_queryenc);
985 if (*opt_sru && *opt_elements)
986 ZOOM_connection_option_set(link, "schema", opt_elements);
987 else if (*opt_elements)
988 ZOOM_connection_option_set(link, "elementSetName", opt_elements);
990 ZOOM_connection_option_set(link, "preferredRecordSyntax", opt_requestsyn);
992 if (opt_maxrecs && *opt_maxrecs)
994 cl->maxrecs = atoi(opt_maxrecs);
997 /* convert back to string representation used in ZOOM API */
998 sprintf(maxrecs_str, "%d", cl->maxrecs);
999 ZOOM_connection_option_set(link, "count", maxrecs_str);
1001 /* A present_chunk less than 1 will disable chunking. */
1002 if (present_chunk > 0 && cl->maxrecs > present_chunk) {
1003 sprintf(present_chunk_str, "%d", present_chunk);
1004 ZOOM_connection_option_set(link, "presentChunk", present_chunk_str);
1005 yaz_log(YLOG_DEBUG, "Present chunk set to %s", present_chunk_str);
1008 ZOOM_connection_option_set(link, "presentChunk", maxrecs_str);
1009 yaz_log(YLOG_DEBUG, "Present chunk set to %s (maxrecs)", maxrecs_str);
1011 sprintf(startrecs_str, "%d", cl->startrecs);
1012 ZOOM_connection_option_set(link, "start", startrecs_str);
1014 /* TODO Verify does it break something for CQL targets(non-SOLR) ? */
1015 /* facets definition is in PQF */
1016 client_set_facets_request(cl, link);
1018 query = ZOOM_query_create();
1021 session_log(se, YLOG_LOG, "%s: Search CQL: %s", client_get_id(cl),
1023 ZOOM_query_cql(query, cl->cqlquery);
1025 ZOOM_query_sortby(query, opt_sort);
1029 session_log(se, YLOG_LOG, "%s: Search PQF: %s", client_get_id(cl),
1031 ZOOM_query_prefix(query, cl->pquery);
1033 if (cl->sort_strategy && cl->sort_criteria) {
1034 yaz_log(YLOG_LOG, "Client %s: "
1035 "Set ZOOM sort strategy and criteria: %s %s",
1036 client_get_id(cl), cl->sort_strategy, cl->sort_criteria);
1037 ZOOM_query_sortby2(query, cl->sort_strategy, cl->sort_criteria);
1040 yaz_log(YLOG_DEBUG,"Client %s: Starting search", client_get_id(cl));
1041 client_set_state(cl, Client_Working);
1043 cl->record_offset = 0;
1044 rs = ZOOM_connection_search(link, query);
1045 ZOOM_query_destroy(query);
1046 ZOOM_resultset_destroy(cl->resultset);
1048 connection_continue(co);
1052 struct client *client_create(const char *id)
1054 struct client *cl = xmalloc(sizeof(*cl));
1065 cl->record_offset = 0;
1068 cl->state = Client_Disconnected;
1071 cl->suggestions = 0;
1073 pazpar2_mutex_create(&cl->mutex, "client");
1076 cl->facet_limits = 0;
1077 cl->sort_strategy = 0;
1078 cl->sort_criteria = 0;
1080 cl->id = xstrdup(id);
1081 client_init_xdoc(cl);
1084 yaz_log(YLOG_DEBUG, "client_create c=%p %s", cl, id);
1088 void client_lock(struct client *c)
1090 yaz_mutex_enter(c->mutex);
1093 void client_unlock(struct client *c)
1095 yaz_mutex_leave(c->mutex);
1098 void client_incref(struct client *c)
1100 pazpar2_incref(&c->ref_count, c->mutex);
1101 yaz_log(YLOG_DEBUG, "client_incref c=%p %s cnt=%d",
1102 c, client_get_id(c), c->ref_count);
1105 int client_destroy(struct client *c)
1109 yaz_log(YLOG_DEBUG, "client_destroy c=%p %s cnt=%d",
1110 c, client_get_id(c), c->ref_count);
1111 if (!pazpar2_decref(&c->ref_count, c->mutex))
1122 xfree(c->sort_strategy);
1123 xfree(c->sort_criteria);
1124 assert(!c->connection);
1125 facet_limits_destroy(c->facet_limits);
1127 client_destroy_xdoc(c);
1130 ZOOM_resultset_destroy(c->resultset);
1132 yaz_mutex_destroy(&c->mutex);
1141 void client_set_connection(struct client *cl, struct connection *con)
1144 ZOOM_resultset_release(cl->resultset);
1147 assert(cl->connection == 0);
1148 cl->connection = con;
1154 cl->connection = con;
1160 void client_disconnect(struct client *cl)
1162 if (cl->state != Client_Idle)
1163 client_set_state(cl, Client_Disconnected);
1164 client_set_connection(cl, 0);
1167 void client_mark_dead(struct client *cl)
1170 connection_mark_dead(cl->connection);
1173 void client_stop(struct client *cl)
1176 if (cl->state == Client_Working || cl->state == Client_Connecting)
1178 yaz_log(YLOG_LOG, "client_stop: %s release", client_get_id(cl));
1181 connection_release2(cl->connection);
1182 assert(cl->ref_count > 1);
1186 cl->state = Client_Disconnected;
1189 yaz_log(YLOG_LOG, "client_stop: %s ignore", client_get_id(cl));
1193 // Initialize CCL map for a target
1194 static CCL_bibset prepare_cclmap(struct client *cl, CCL_bibset base_bibset)
1196 struct session_database *sdb = client_get_database(cl);
1203 res = ccl_qual_dup(base_bibset);
1205 res = ccl_qual_mk();
1206 for (s = sdb->settings[PZ_CCLMAP]; s; s = s->next)
1208 const char *addinfo = 0;
1209 char *p = strchr(s->name + 3, ':');
1212 WRBUF w = wrbuf_alloc();
1213 wrbuf_printf(w, "Malformed cclmap. name=%s", s->name);
1214 yaz_log(YLOG_WARN, "%s: %s", client_get_id(cl), wrbuf_cstr(w));
1215 client_set_diagnostic(cl, ZOOM_ERROR_CCL_CONFIG,
1216 ZOOM_diag_str(ZOOM_ERROR_CCL_CONFIG),
1218 client_set_state_nb(cl, Client_Error);
1224 if (ccl_qual_fitem2(res, s->value, p, &addinfo))
1226 WRBUF w = wrbuf_alloc();
1228 wrbuf_printf(w, "Malformed cclmap. name=%s: value=%s (%s)",
1229 s->name, p, addinfo);
1230 yaz_log(YLOG_WARN, "%s: %s", client_get_id(cl), wrbuf_cstr(w));
1231 client_set_diagnostic(cl, ZOOM_ERROR_CCL_CONFIG,
1232 ZOOM_diag_str(ZOOM_ERROR_CCL_CONFIG),
1234 client_set_state_nb(cl, Client_Error);
1243 // returns a xmalloced CQL query corresponding to the pquery in client
1244 static char *make_cqlquery(struct client *cl, Z_RPNQuery *zquery)
1246 cql_transform_t cqlt = cql_transform_create();
1248 WRBUF wrb = wrbuf_alloc();
1251 if ((status = cql_transform_rpn2cql_wrbuf(cqlt, wrb, zquery)))
1253 yaz_log(YLOG_WARN, "Failed to generate CQL query, code=%d", status);
1257 r = xstrdup(wrbuf_cstr(wrb));
1260 cql_transform_close(cqlt);
1264 // returns a xmalloced SOLR query corresponding to the pquery in client
1265 // TODO Could prob. be merge with the similar make_cqlquery
1266 static char *make_solrquery(struct client *cl, Z_RPNQuery *zquery)
1268 solr_transform_t sqlt = solr_transform_create();
1270 WRBUF wrb = wrbuf_alloc();
1273 if ((status = solr_transform_rpn2solr_wrbuf(sqlt, wrb, zquery)))
1275 yaz_log(YLOG_WARN, "Failed to generate SOLR query, code=%d", status);
1279 r = xstrdup(wrbuf_cstr(wrb));
1282 solr_transform_close(sqlt);
1286 const char *client_get_facet_limit_local(struct client *cl,
1287 struct session_database *sdb,
1289 NMEM nmem, int *num, char ***values)
1291 const char *name = 0;
1292 const char *value = 0;
1293 for (; (name = facet_limits_get(cl->facet_limits, *l, &value)); (*l)++)
1295 struct setting *s = 0;
1297 for (s = sdb->settings[PZ_LIMITMAP]; s; s = s->next)
1299 const char *p = strchr(s->name + 3, ':');
1300 if (p && !strcmp(p + 1, name) && s->value)
1304 nmem_strsplit_escape2(nmem, ",", s->value, &cvalues,
1306 for (j = 0; j < cnum; j++)
1308 const char *cvalue = cvalues[j];
1309 while (*cvalue == ' ')
1311 if (!strncmp(cvalue, "local:", 6))
1313 const char *cp = cvalue + 6;
1316 nmem_strsplit_escape2(nmem, "|", value, values,
1319 return *cp ? cp : name;
1328 static int apply_limit(struct session_database *sdb,
1329 facet_limits_t facet_limits,
1330 WRBUF w_pqf, CCL_bibset ccl_map,
1331 struct conf_service *service)
1338 NMEM nmem_tmp = nmem_create();
1339 for (i = 0; (name = facet_limits_get(facet_limits, i, &value)); i++)
1341 struct setting *s = 0;
1342 nmem_reset(nmem_tmp);
1343 /* name="pz:limitmap:author" value="rpn:@attr 1=4|local:other" */
1344 for (s = sdb->settings[PZ_LIMITMAP]; s; s = s->next)
1346 const char *p = strchr(s->name + 3, ':');
1347 if (p && !strcmp(p + 1, name) && s->value)
1353 nmem_strsplit_escape2(nmem_tmp, "|", value, &values,
1356 nmem_strsplit_escape2(nmem_tmp, ",", s->value, &cvalues,
1359 for (j = 0; ret == 0 && j < cnum; j++)
1361 const char *cvalue = cvalues[j];
1362 while (*cvalue == ' ')
1364 if (!strncmp(cvalue, "rpn:", 4))
1366 const char *pqf = cvalue + 4;
1367 wrbuf_puts(w_pqf, "@and ");
1368 wrbuf_puts(w_pqf, pqf);
1369 wrbuf_puts(w_pqf, " ");
1370 for (i = 0; i < num; i++)
1373 wrbuf_puts(w_pqf, "@or ");
1374 yaz_encode_pqf_term(w_pqf, values[i],
1378 else if (!strncmp(cvalue, "ccl:", 4))
1380 const char *ccl = cvalue + 4;
1381 WRBUF ccl_w = wrbuf_alloc();
1382 for (i = 0; i < num; i++)
1385 struct ccl_rpn_node *cn;
1386 wrbuf_rewind(ccl_w);
1387 wrbuf_puts(ccl_w, ccl);
1388 wrbuf_puts(ccl_w, "=\"");
1389 wrbuf_puts(ccl_w, values[i]);
1390 wrbuf_puts(ccl_w, "\"");
1392 cn = ccl_find_str(ccl_map, wrbuf_cstr(ccl_w),
1397 wrbuf_printf(w_pqf, "@and ");
1399 /* or multiple values.. could be bad if last
1400 CCL parse fails, but this is unlikely to
1403 wrbuf_printf(w_pqf, "@or ");
1404 ccl_pquery(w_pqf, cn);
1408 wrbuf_destroy(ccl_w);
1410 else if (!strncmp(cvalue, "local:", 6)) {
1415 yaz_log(YLOG_WARN, "Target %s: Bad limitmap '%s'",
1416 sdb->database->id, cvalue);
1417 ret = -1; /* bad limitmap */
1426 for (i = 0; i < service->num_metadata; i++)
1428 struct conf_metadata *md = service->metadata + i;
1429 if (!strcmp(md->name, name) && md->limitcluster)
1431 yaz_log(YLOG_LOG, "limitcluster in use for %s",
1436 if (i == service->num_metadata)
1438 yaz_log(YLOG_WARN, "Target %s: limit %s used, but no limitmap defined",
1439 (sdb->database ? sdb->database->id : "<no id>"), name);
1443 nmem_destroy(nmem_tmp);
1447 // Parse the query given the settings specific to this client
1448 // client variable same_search is set as below as well as returned:
1449 // 0 if query is OK but different from before
1450 // 1 if query is OK but same as before
1451 // return -1 on query error
1452 // return -2 on limit error
1453 int client_parse_query(struct client *cl, const char *query,
1454 facet_limits_t facet_limits, const char **error_msg)
1456 struct session *se = client_get_session(cl);
1457 struct conf_service *service = se->service;
1458 struct session_database *sdb = client_get_database(cl);
1459 struct ccl_rpn_node *cn;
1462 CCL_bibset ccl_map = prepare_cclmap(cl, service->ccl_bibset);
1463 const char *sru = session_setting_oneval(sdb, PZ_SRU);
1464 const char *pqf_prefix = session_setting_oneval(sdb, PZ_PQF_PREFIX);
1465 const char *pqf_strftime = session_setting_oneval(sdb, PZ_PQF_STRFTIME);
1466 const char *query_syntax = session_setting_oneval(sdb, PZ_QUERY_SYNTAX);
1474 w_ccl = wrbuf_alloc();
1475 wrbuf_puts(w_ccl, query);
1477 w_pqf = wrbuf_alloc();
1480 wrbuf_puts(w_pqf, pqf_prefix);
1481 wrbuf_puts(w_pqf, " ");
1484 if (apply_limit(sdb, facet_limits, w_pqf, ccl_map, service))
1486 ccl_qual_rm(&ccl_map);
1490 facet_limits_destroy(cl->facet_limits);
1491 cl->facet_limits = facet_limits_dup(facet_limits);
1493 yaz_log(YLOG_LOG, "Client %s: CCL query: %s limit: %s",
1494 client_get_id(cl), wrbuf_cstr(w_ccl), wrbuf_cstr(w_pqf));
1495 cn = ccl_find_str(ccl_map, wrbuf_cstr(w_ccl), &cerror, &cpos);
1496 ccl_qual_rm(&ccl_map);
1500 *error_msg = ccl_err_msg(cerror);
1501 client_set_state(cl, Client_Error);
1502 session_log(se, YLOG_WARN, "Client %s: Failed to parse CCL query '%s'",
1505 wrbuf_destroy(w_ccl);
1506 wrbuf_destroy(w_pqf);
1509 wrbuf_destroy(w_ccl);
1511 if (!pqf_strftime || !*pqf_strftime)
1512 ccl_pquery(w_pqf, cn);
1515 time_t cur_time = time(0);
1516 struct tm *tm = localtime(&cur_time);
1518 const char *cp = tmp_str;
1520 /* see man strftime(3) for things .. In particular %% gets converted
1521 to %.. And That's our original query .. */
1522 strftime(tmp_str, sizeof(tmp_str)-1, pqf_strftime, tm);
1526 ccl_pquery(w_pqf, cn);
1528 wrbuf_putc(w_pqf, cp[0]);
1532 /* Compares query and limit with old one. If different we need to research */
1533 if (!cl->pquery || strcmp(cl->pquery, wrbuf_cstr(w_pqf)))
1536 session_log(se, YLOG_LOG, "Client %s: "
1537 "Re-search due query/limit change: %s to %s",
1538 client_get_id(cl), cl->pquery, wrbuf_cstr(w_pqf));
1540 cl->pquery = xstrdup(wrbuf_cstr(w_pqf));
1541 // return value is no longer used.
1543 // Need to (re)search
1546 wrbuf_destroy(w_pqf);
1548 xfree(cl->cqlquery);
1551 odr_out = odr_createmem(ODR_ENCODE);
1552 zquery = p_query_rpn(odr_out, cl->pquery);
1556 session_log(se, YLOG_WARN, "Invalid PQF query for Client %s: %s",
1557 client_get_id(cl), cl->pquery);
1559 *error_msg = "Invalid PQF after CCL to PQF conversion";
1563 session_log(se, YLOG_LOG, "PQF for Client %s: %s",
1564 client_get_id(cl), cl->pquery);
1566 /* Support for PQF on SRU targets. */
1567 if (strcmp(query_syntax, "pqf") != 0 && *sru)
1569 if (!strcmp(sru, "solr"))
1570 cl->cqlquery = make_solrquery(cl, zquery);
1572 cl->cqlquery = make_cqlquery(cl, zquery);
1575 *error_msg = "Cannot convert PQF to Solr/CQL";
1579 session_log(se, YLOG_LOG, "Client %s native query: %s (%s)",
1580 client_get_id(cl), cl->cqlquery, sru);
1583 odr_destroy(odr_out);
1585 /* TODO FIX Not thread safe */
1588 // Initialize relevance structure with query terms
1589 se->relevance = relevance_create_ccl(se->service->charsets, cn,
1590 se->service->rank_cluster,
1591 se->service->rank_follow,
1592 se->service->rank_lead,
1593 se->service->rank_length);
1599 int client_parse_sort(struct client *cl, struct reclist_sortparms *sp)
1603 const char *sort_strategy_and_spec =
1604 get_strategy_plus_sort(cl, sp->name);
1605 int increasing = sp->increasing;
1606 if (!strcmp(sp->name, "relevance"))
1608 if (sort_strategy_and_spec && strlen(sort_strategy_and_spec) < 40)
1610 char strategy[50], *p;
1611 strcpy(strategy, sort_strategy_and_spec);
1612 p = strchr(strategy, ':');
1615 // Split the string in two
1623 yaz_log(YLOG_LOG, "Client %s: "
1624 "applying sorting %s %s", client_get_id(cl),
1626 if (!cl->sort_strategy || strcmp(cl->sort_strategy, strategy))
1627 cl->same_search = 0;
1628 if (!cl->sort_criteria || strcmp(cl->sort_criteria, p))
1629 cl->same_search = 0;
1630 if (cl->same_search == 0) {
1631 xfree(cl->sort_strategy);
1632 cl->sort_strategy = xstrdup(strategy);
1633 xfree(cl->sort_criteria);
1634 cl->sort_criteria = xstrdup(p);
1638 yaz_log(YLOG_LOG, "Client %s: "
1639 "Invalid sort strategy and spec found %s",
1640 client_get_id(cl), sort_strategy_and_spec);
1641 xfree(cl->sort_strategy);
1642 cl->sort_strategy = 0;
1643 xfree(cl->sort_criteria);
1644 cl->sort_criteria = 0;
1649 yaz_log(YLOG_DEBUG, "Client %s: "
1650 "No sort strategy and spec found.", client_get_id(cl));
1651 xfree(cl->sort_strategy);
1652 cl->sort_strategy = 0;
1653 xfree(cl->sort_criteria);
1654 cl->sort_criteria = 0;
1658 return !cl->same_search;
1661 void client_set_session(struct client *cl, struct session *se)
1666 int client_is_active(struct client *cl)
1668 if (cl->connection && (cl->state == Client_Connecting ||
1669 cl->state == Client_Working))
1674 int client_is_active_preferred(struct client *cl)
1676 /* only count if this is a preferred target. */
1679 /* TODO No sure this the condition that Seb wants */
1680 if (cl->connection && (cl->state == Client_Connecting ||
1681 cl->state == Client_Working))
1686 Odr_int client_get_hits(struct client *cl)
1691 Odr_int client_get_approximation(struct client *cl)
1693 if (cl->record_offset > 0)
1695 Odr_int approx = ((10 * cl->hits * (cl->record_offset - cl->filtered))
1696 / cl->record_offset + 5) /10;
1697 yaz_log(YLOG_DEBUG, "%s: Approx: %lld * %d / %d = %lld ",
1698 client_get_id(cl), cl->hits,
1699 cl->record_offset - cl->filtered, cl->record_offset, approx);
1705 int client_get_num_records(struct client *cl, int *filtered, int *ingest,
1709 *filtered = cl->filtered;
1711 *ingest = cl->ingest_failures;
1713 *failed = cl->record_failures;
1714 return cl->record_offset;
1717 void client_set_diagnostic(struct client *cl, int diagnostic,
1718 const char *message, const char *addinfo)
1720 cl->diagnostic = diagnostic;
1722 cl->message = xstrdup(message);
1726 cl->addinfo = xstrdup(addinfo);
1729 int client_get_diagnostic(struct client *cl, const char **message,
1730 const char **addinfo)
1733 *message = cl->message;
1735 *addinfo = cl->addinfo;
1736 return cl->diagnostic;
1739 const char * client_get_suggestions_xml(struct client *cl, WRBUF wrbuf)
1742 struct suggestions *suggestions = cl->suggestions;
1746 if (suggestions->passthrough)
1748 yaz_log(YLOG_DEBUG, "Passthrough Suggestions: \n%s\n",
1749 suggestions->passthrough);
1750 return suggestions->passthrough;
1752 if (suggestions->num == 0)
1755 for (idx = 0; idx < suggestions->num; idx++) {
1756 wrbuf_printf(wrbuf, "<suggest term=\"%s\"", suggestions->suggest[idx]);
1757 if (suggestions->misspelled[idx] && suggestions->misspelled[idx]) {
1758 wrbuf_puts(wrbuf, suggestions->misspelled[idx]);
1759 wrbuf_puts(wrbuf, "</suggest>\n");
1762 wrbuf_puts(wrbuf, "/>\n");
1765 return wrbuf_cstr(wrbuf);
1769 void client_set_database(struct client *cl, struct session_database *db)
1774 const char *client_get_id(struct client *cl)
1779 int client_get_maxrecs(struct client *cl)
1784 void client_set_preferred(struct client *cl, int v)
1790 struct suggestions* client_suggestions_create(const char* suggestions_string)
1794 struct suggestions *suggestions;
1795 if (suggestions_string == 0 || suggestions_string[0] == 0 )
1797 nmem = nmem_create();
1798 suggestions = nmem_malloc(nmem, sizeof(*suggestions));
1799 yaz_log(YLOG_DEBUG, "client target suggestions: %s.", suggestions_string);
1801 suggestions->nmem = nmem;
1802 suggestions->num = 0;
1803 suggestions->misspelled = 0;
1804 suggestions->suggest = 0;
1805 suggestions->passthrough = nmem_strdup_null(nmem, suggestions_string);
1807 if (suggestions_string)
1808 nmem_strsplit_escape2(suggestions->nmem, "\n", suggestions_string, &suggestions->suggest,
1809 &suggestions->num, 1, '\\', 0);
1810 /* Set up misspelled array */
1811 suggestions->misspelled = (char **)
1812 nmem_malloc(nmem, suggestions->num * sizeof(*suggestions->misspelled));
1813 /* replace = with \0 .. for each item */
1814 for (i = 0; i < suggestions->num; i++)
1816 char *cp = strchr(suggestions->suggest[i], '=');
1819 suggestions->misspelled[i] = cp+1;
1825 static void client_suggestions_destroy(struct client *cl)
1827 NMEM nmem = cl->suggestions->nmem;
1828 cl->suggestions = 0;
1835 * c-file-style: "Stroustrup"
1836 * indent-tabs-mode: nil
1838 * vim: shiftwidth=4 tabstop=8 expandtab