2 * Copyright (C) 1995-1997, Index Data I/S
4 * Sebastian Hammer, Adam Dickmeiss
7 * Revision 1.49 1997-09-25 14:57:23 adam
10 * Revision 1.48 1997/09/17 12:19:19 adam
11 * Zebra version corresponds to YAZ version 1.4.
12 * Changed Zebra server so that it doesn't depend on global common_resource.
14 * Revision 1.47 1997/09/04 13:58:36 adam
15 * New retrieve/extract method tellf (added).
16 * Added O_BINARY for open calls.
18 * Revision 1.46 1997/07/28 08:30:47 adam
19 * Server returns diagnostic 14 when record doesn't exist.
21 * Revision 1.45 1996/12/23 15:30:45 adam
23 * Bug fix: result sets weren't deleted after server shut down.
25 * Revision 1.44 1996/12/11 12:08:01 adam
26 * Added better compression.
28 * Revision 1.43 1996/11/15 15:03:58 adam
29 * Logging of execution speed by using the times(2) call.
31 * Revision 1.42 1996/11/08 11:10:36 adam
32 * Buffers used during file match got bigger.
33 * Compressed ISAM support everywhere.
34 * Bug fixes regarding masking characters in queries.
35 * Redesigned Regexp-2 queries.
37 * Revision 1.41 1996/10/29 14:09:56 adam
38 * Use of cisam system - enabled if setting isamc is 1.
40 * Revision 1.40 1996/06/04 10:19:02 adam
41 * Minor changes - removed include of ctype.h.
43 * Revision 1.39 1996/05/31 09:07:05 quinn
44 * Work on character-set handling
46 * Revision 1.38 1996/05/14 11:34:01 adam
47 * Scan support in multiple registers/databases.
49 * Revision 1.37 1996/05/14 06:16:48 adam
50 * Compact use/set bytes used in search service.
52 * Revision 1.36 1996/05/01 13:46:37 adam
53 * First work on multiple records in one file.
54 * New option, -offset, to the "unread" command in the filter module.
56 * Revision 1.35 1996/03/26 16:01:14 adam
57 * New setting lockPath: directory of various lock files.
59 * Revision 1.34 1996/03/20 09:36:46 adam
60 * Function dict_lookup_grep got extra parameter, init_pos, which marks
61 * from which position in pattern approximate pattern matching should occur.
62 * Approximate pattern matching is used in relevance=re-2.
64 * Revision 1.33 1996/01/17 14:57:56 adam
65 * Prototype changed for reader functions in extract/retrieve. File
66 * is identified by 'void *' instead of 'int.
68 * Revision 1.32 1995/12/11 09:12:58 adam
69 * The rec_get function returns NULL if record doesn't exist - will
70 * happen in the server if the result set records have been deleted since
71 * the creation of the set (i.e. the search).
72 * The server saves a result temporarily if it is 'volatile', i.e. the
73 * set is register dependent.
75 * Revision 1.31 1995/12/08 16:22:56 adam
76 * Work on update while servers are running. Three lock files introduced.
77 * The servers reload their registers when necessary, but they don't
78 * reestablish result sets yet.
80 * Revision 1.30 1995/12/07 17:38:48 adam
81 * Work locking mechanisms for concurrent updates/commit.
83 * Revision 1.29 1995/12/04 14:22:32 adam
84 * Extra arg to recType_byName.
85 * Started work on new regular expression parsed input to
88 * Revision 1.28 1995/11/28 09:09:48 adam
89 * Zebra config renamed.
90 * Use setting 'recordId' to identify record now.
91 * Bug fix in recindex.c: rec_release_blocks was invokeded even
92 * though the blocks were already released.
93 * File traversal properly deletes records when needed.
95 * Revision 1.27 1995/11/27 13:58:54 adam
96 * New option -t. storeStore data implemented in server.
98 * Revision 1.26 1995/11/25 10:24:07 adam
99 * More record fields - they are enumerated now.
100 * New options: flagStoreData flagStoreKey.
102 * Revision 1.25 1995/11/21 15:29:13 adam
103 * Config file 'base' read by default by both indexer and server.
105 * Revision 1.24 1995/11/20 16:59:47 adam
106 * New update method: the 'old' keys are saved for each records.
108 * Revision 1.23 1995/11/16 17:00:56 adam
109 * Better logging of rpn query.
111 * Revision 1.22 1995/11/16 15:34:55 adam
112 * Uses new record management system in both indexer and server.
114 * Revision 1.21 1995/11/01 16:25:52 quinn
115 * *** empty log message ***
117 * Revision 1.20 1995/10/27 14:00:12 adam
118 * Implemented detection of database availability.
120 * Revision 1.19 1995/10/17 18:02:11 adam
121 * New feature: databases. Implemented as prefix to words in dictionary.
123 * Revision 1.18 1995/10/16 14:03:09 quinn
124 * Changes to support element set names and espec1
126 * Revision 1.17 1995/10/16 09:32:40 adam
127 * More work on relational op.
129 * Revision 1.16 1995/10/13 12:26:44 adam
130 * Optimization of truncation.
132 * Revision 1.15 1995/10/12 12:40:55 adam
133 * Bug fixes in rpn_prox.
135 * Revision 1.14 1995/10/09 16:18:37 adam
136 * Function dict_lookup_grep got extra client data parameter.
138 * Revision 1.13 1995/10/06 14:38:00 adam
139 * New result set method: r_score.
140 * Local no (sysno) and score is transferred to retrieveCtrl.
142 * Revision 1.12 1995/10/06 13:52:06 adam
143 * Bug fixes. Handler may abort further scanning.
145 * Revision 1.11 1995/10/06 10:43:57 adam
146 * Scan added. 'occurrences' in scan entries not set yet.
148 * Revision 1.10 1995/10/02 16:43:32 quinn
149 * Set default resulting record type in fetch.
151 * Revision 1.9 1995/10/02 15:18:52 adam
152 * New member in recRetrieveCtrl: diagnostic.
154 * Revision 1.8 1995/09/28 09:19:47 adam
155 * xfree/xmalloc used everywhere.
156 * Extract/retrieve method seems to work for text records.
158 * Revision 1.7 1995/09/27 16:17:32 adam
159 * More work on retrieve.
161 * Revision 1.6 1995/09/08 08:53:22 adam
162 * Record buffer maintained in server_info.
164 * Revision 1.5 1995/09/06 16:11:18 adam
165 * Option: only one word key per file.
167 * Revision 1.4 1995/09/06 10:33:04 adam
168 * More work on present. Some log messages removed.
170 * Revision 1.3 1995/09/05 15:28:40 adam
171 * More work on search engine.
173 * Revision 1.2 1995/09/04 12:33:43 adam
174 * Various cleanup. YAZ util used instead.
176 * Revision 1.1 1995/09/04 09:10:41 adam
177 * More work on index add/del/update.
178 * Merge sort implemented.
179 * Initial work on z39 server.
205 #include <sys/times.h>
211 static struct tms tms1;
212 static struct tms tms2;
215 static int register_lock (ZServerInfo *zi)
218 int state = zebraServerLockGetState(zi->res, &lastChange);
228 zebraServerLock (zi->res, state);
232 if (zi->registerState == state)
234 if (zi->registerChange >= lastChange)
236 logf (LOG_LOG, "Register completely updated since last access");
238 else if (zi->registerState == -1)
239 logf (LOG_LOG, "Reading register using state %d pid=%ld", state,
242 logf (LOG_LOG, "Register has changed state from %d to %d",
243 zi->registerState, state);
244 zi->registerChange = lastChange;
247 zebTargetInfo_close (zi->zti, 0);
248 dict_close (zi->dict);
252 isc_close (zi->isamc);
253 rec_close (&zi->records);
255 bf_cache (zi->bfs, state ? res_get (zi->res, "shadow") : NULL);
256 zi->registerState = state;
257 zi->records = rec_open (zi->bfs, 0);
258 if (!(zi->dict = dict_open (zi->bfs, FNAME_DICT, 40, 0)))
262 if (res_get_match (zi->res, "isam", "c", NULL))
264 if (!(zi->isamc = isc_open (zi->bfs, FNAME_ISAMC,
265 0, key_isamc_m(zi->res))))
271 if (!(zi->isam = is_open (zi->bfs, FNAME_ISAM, key_compare, 0,
272 sizeof (struct it_key), zi->res)))
275 zi->zti = zebTargetInfo_open (zi->records, 0);
276 init_charmap (zi->res);
280 static void register_unlock (ZServerInfo *zi)
282 static int waitSec = -1;
286 logf (LOG_LOG, "user/system: %ld/%ld",
287 (long) (tms2.tms_utime - tms1.tms_utime),
288 (long) (tms2.tms_stime - tms1.tms_stime));
292 char *s = res_get (zi->res, "debugRequestWait");
303 if (zi->registerState != -1)
304 zebraServerUnlock (zi->registerState);
307 bend_initresult *bend_init (bend_initrequest *q)
309 bend_initresult *r = odr_malloc (q->stream, sizeof(*r));
310 ZServerInfo *zi = xmalloc (sizeof(*zi));
311 struct statserv_options_block *sob;
317 logf (LOG_DEBUG, "bend_init");
319 sob = statserv_getcontrol ();
320 logf (LOG_LOG, "Reading resources from %s", sob->configname);
321 if (!(zi->res = res_open (sob->configname)))
323 logf (LOG_FATAL, "Cannot open resource `%s'", sob->configname);
326 zi->dh = data1_create ();
327 zi->bfs = bfs_create (res_get (zi->res, "register"));
328 bf_lockDir (zi->bfs, res_get (zi->res, "lockDir"));
329 data1_set_tabpath (zi->dh, res_get(zi->res, "profilePath"));
331 zi->registerState = -1; /* trigger open of registers! */
332 zi->registerChange = 0;
335 zi->odr = odr_createmem (ODR_ENCODE);
336 zi->registered_sets = NULL;
340 bend_searchresult *bend_search (void *handle, bend_searchrequest *q, int *fd)
342 ZServerInfo *zi = handle;
343 bend_searchresult *r = odr_malloc (q->stream, sizeof(*r));
352 zi->errString = NULL;
354 logf (LOG_LOG, "ResultSet '%s'", q->setname);
355 switch (q->query->which)
357 case Z_Query_type_1: case Z_Query_type_101:
358 r->errcode = rpn_search (zi, q->query->u.type_1,
359 q->num_bases, q->basenames, q->setname,
361 r->errstring = zi->errString;
366 register_unlock (zi);
370 struct fetch_control {
373 char *record_int_buf;
378 static int record_ext_read (void *fh, char *buf, size_t count)
380 struct fetch_control *fc = fh;
381 return read (fc->fd, buf, count);
384 static off_t record_ext_seek (void *fh, off_t offset)
386 struct fetch_control *fc = fh;
387 return lseek (fc->fd, offset + fc->record_offset, SEEK_SET);
390 static off_t record_ext_tell (void *fh)
392 struct fetch_control *fc = fh;
393 return lseek (fc->fd, 0, SEEK_CUR) - fc->record_offset;
396 static off_t record_int_seek (void *fh, off_t offset)
398 struct fetch_control *fc = fh;
399 return (off_t) (fc->record_int_pos = offset);
402 static off_t record_int_tell (void *fh)
404 struct fetch_control *fc = fh;
405 return (off_t) fc->record_int_pos;
408 static int record_int_read (void *fh, char *buf, size_t count)
410 struct fetch_control *fc = fh;
411 int l = fc->record_int_len - fc->record_int_pos;
414 l = (l < count) ? l : count;
415 memcpy (buf, fc->record_int_buf + fc->record_int_pos, l);
416 fc->record_int_pos += l;
420 static int record_fetch (ZServerInfo *zi, int sysno, int score, ODR stream,
421 oid_value input_format, Z_RecordComposition *comp,
422 oid_value *output_format, char **rec_bufp,
423 int *rec_lenp, char **basenamep)
426 char *fname, *file_type, *basename;
428 struct recRetrieveCtrl retrieveCtrl;
430 struct fetch_control fc;
432 rec = rec_get (zi->records, sysno);
435 logf (LOG_DEBUG, "rec_get fail on sysno=%d", sysno);
438 file_type = rec->info[recInfo_fileType];
439 fname = rec->info[recInfo_filename];
440 basename = rec->info[recInfo_databaseName];
441 *basenamep = odr_malloc (stream, strlen(basename)+1);
442 strcpy (*basenamep, basename);
444 if (!(rt = recType_byName (file_type, subType)))
446 logf (LOG_FATAL|LOG_ERRNO, "Retrieve: Cannot handle type %s",
450 logf (LOG_DEBUG, "retrieve localno=%d score=%d", sysno, score);
451 retrieveCtrl.fh = &fc;
453 if (rec->size[recInfo_storeData] > 0)
455 retrieveCtrl.readf = record_int_read;
456 retrieveCtrl.seekf = record_int_seek;
457 retrieveCtrl.tellf = record_int_tell;
458 fc.record_int_len = rec->size[recInfo_storeData];
459 fc.record_int_buf = rec->info[recInfo_storeData];
460 fc.record_int_pos = 0;
461 logf (LOG_DEBUG, "Internal retrieve. %d bytes", fc.record_int_len);
465 if ((fc.fd = open (fname, O_BINARY|O_RDONLY)) == -1)
467 logf (LOG_WARN|LOG_ERRNO, "Retrieve fail; missing file: %s",
472 memcpy (&fc.record_offset, rec->info[recInfo_offset],
473 sizeof(fc.record_offset));
475 retrieveCtrl.readf = record_ext_read;
476 retrieveCtrl.seekf = record_ext_seek;
477 retrieveCtrl.tellf = record_ext_tell;
479 record_ext_seek (retrieveCtrl.fh, 0);
481 retrieveCtrl.subType = subType;
482 retrieveCtrl.localno = sysno;
483 retrieveCtrl.score = score;
484 retrieveCtrl.odr = stream;
485 retrieveCtrl.input_format = retrieveCtrl.output_format = input_format;
486 retrieveCtrl.comp = comp;
487 retrieveCtrl.diagnostic = 0;
488 retrieveCtrl.dh = zi->dh;
489 (*rt->retrieve)(&retrieveCtrl);
490 *output_format = retrieveCtrl.output_format;
491 *rec_bufp = retrieveCtrl.rec_buf;
492 *rec_lenp = retrieveCtrl.rec_len;
497 return retrieveCtrl.diagnostic;
500 bend_fetchresult *bend_fetch (void *handle, bend_fetchrequest *q, int *num)
502 ZServerInfo *zi = handle;
503 bend_fetchresult *r = odr_malloc (q->stream, sizeof(*r));
505 ZServerSetSysno *records;
511 r->basename = "base";
516 positions[0] = q->number;
517 records = resultSetSysnoGet (zi, q->setname, 1, positions);
520 logf (LOG_DEBUG, "resultSetRecordGet, error");
522 register_unlock (zi);
525 if (!records[0].sysno)
528 logf (LOG_DEBUG, "Out of range. pos=%d", q->number);
529 register_unlock (zi);
532 r->errcode = record_fetch (zi, records[0].sysno,
533 records[0].score, q->stream, q->format,
534 q->comp, &r->format, &r->record, &r->len,
536 resultSetSysnoDel (zi, records, 1);
537 register_unlock (zi);
541 bend_deleteresult *bend_delete (void *handle, bend_deleterequest *q, int *num)
543 ZServerInfo *zi = handle;
545 register_unlock (zi);
549 bend_scanresult *bend_scan (void *handle, bend_scanrequest *q, int *num)
551 ZServerInfo *zi = handle;
552 bend_scanresult *r = odr_malloc (q->stream, sizeof(*r));
560 r->term_position = q->term_position;
561 r->num_entries = q->num_entries;
562 r->errcode = rpn_scan (zi, q->term,
564 q->num_bases, q->basenames,
566 &r->num_entries, &r->entries, &status);
567 r->errstring = zi->errString;
569 register_unlock (zi);
573 void bend_close (void *handle)
575 ZServerInfo *zi = handle;
578 resultSetDestroy (zi);
579 dict_close (zi->dict);
583 isc_close (zi->isamc);
584 rec_close (&zi->records);
585 register_unlock (zi);
587 bfs_destroy (zi->bfs);
588 data1_destroy (zi->dh);
592 int main (int argc, char **argv)
594 struct statserv_options_block *sob;
596 sob = statserv_getcontrol ();
597 strcpy (sob->configname, FNAME_CONFIG);
598 statserv_setcontrol (sob);
600 return statserv_main (argc, argv);