2 * Copyright (C) 1995-1996, Index Data I/S
4 * Sebastian Hammer, Adam Dickmeiss
7 * Revision 1.43 1996-11-15 15:03:58 adam
8 * Logging of execution speed by using the times(2) call.
10 * Revision 1.42 1996/11/08 11:10:36 adam
11 * Buffers used during file match got bigger.
12 * Compressed ISAM support everywhere.
13 * Bug fixes regarding masking characters in queries.
14 * Redesigned Regexp-2 queries.
16 * Revision 1.41 1996/10/29 14:09:56 adam
17 * Use of cisam system - enabled if setting isamc is 1.
19 * Revision 1.40 1996/06/04 10:19:02 adam
20 * Minor changes - removed include of ctype.h.
22 * Revision 1.39 1996/05/31 09:07:05 quinn
23 * Work on character-set handling
25 * Revision 1.38 1996/05/14 11:34:01 adam
26 * Scan support in multiple registers/databases.
28 * Revision 1.37 1996/05/14 06:16:48 adam
29 * Compact use/set bytes used in search service.
31 * Revision 1.36 1996/05/01 13:46:37 adam
32 * First work on multiple records in one file.
33 * New option, -offset, to the "unread" command in the filter module.
35 * Revision 1.35 1996/03/26 16:01:14 adam
36 * New setting lockPath: directory of various lock files.
38 * Revision 1.34 1996/03/20 09:36:46 adam
39 * Function dict_lookup_grep got extra parameter, init_pos, which marks
40 * from which position in pattern approximate pattern matching should occur.
41 * Approximate pattern matching is used in relevance=re-2.
43 * Revision 1.33 1996/01/17 14:57:56 adam
44 * Prototype changed for reader functions in extract/retrieve. File
45 * is identified by 'void *' instead of 'int.
47 * Revision 1.32 1995/12/11 09:12:58 adam
48 * The rec_get function returns NULL if record doesn't exist - will
49 * happen in the server if the result set records have been deleted since
50 * the creation of the set (i.e. the search).
51 * The server saves a result temporarily if it is 'volatile', i.e. the
52 * set is register dependent.
54 * Revision 1.31 1995/12/08 16:22:56 adam
55 * Work on update while servers are running. Three lock files introduced.
56 * The servers reload their registers when necessary, but they don't
57 * reestablish result sets yet.
59 * Revision 1.30 1995/12/07 17:38:48 adam
60 * Work locking mechanisms for concurrent updates/commit.
62 * Revision 1.29 1995/12/04 14:22:32 adam
63 * Extra arg to recType_byName.
64 * Started work on new regular expression parsed input to
67 * Revision 1.28 1995/11/28 09:09:48 adam
68 * Zebra config renamed.
69 * Use setting 'recordId' to identify record now.
70 * Bug fix in recindex.c: rec_release_blocks was invokeded even
71 * though the blocks were already released.
72 * File traversal properly deletes records when needed.
74 * Revision 1.27 1995/11/27 13:58:54 adam
75 * New option -t. storeStore data implemented in server.
77 * Revision 1.26 1995/11/25 10:24:07 adam
78 * More record fields - they are enumerated now.
79 * New options: flagStoreData flagStoreKey.
81 * Revision 1.25 1995/11/21 15:29:13 adam
82 * Config file 'base' read by default by both indexer and server.
84 * Revision 1.24 1995/11/20 16:59:47 adam
85 * New update method: the 'old' keys are saved for each records.
87 * Revision 1.23 1995/11/16 17:00:56 adam
88 * Better logging of rpn query.
90 * Revision 1.22 1995/11/16 15:34:55 adam
91 * Uses new record management system in both indexer and server.
93 * Revision 1.21 1995/11/01 16:25:52 quinn
94 * *** empty log message ***
96 * Revision 1.20 1995/10/27 14:00:12 adam
97 * Implemented detection of database availability.
99 * Revision 1.19 1995/10/17 18:02:11 adam
100 * New feature: databases. Implemented as prefix to words in dictionary.
102 * Revision 1.18 1995/10/16 14:03:09 quinn
103 * Changes to support element set names and espec1
105 * Revision 1.17 1995/10/16 09:32:40 adam
106 * More work on relational op.
108 * Revision 1.16 1995/10/13 12:26:44 adam
109 * Optimization of truncation.
111 * Revision 1.15 1995/10/12 12:40:55 adam
112 * Bug fixes in rpn_prox.
114 * Revision 1.14 1995/10/09 16:18:37 adam
115 * Function dict_lookup_grep got extra client data parameter.
117 * Revision 1.13 1995/10/06 14:38:00 adam
118 * New result set method: r_score.
119 * Local no (sysno) and score is transferred to retrieveCtrl.
121 * Revision 1.12 1995/10/06 13:52:06 adam
122 * Bug fixes. Handler may abort further scanning.
124 * Revision 1.11 1995/10/06 10:43:57 adam
125 * Scan added. 'occurrences' in scan entries not set yet.
127 * Revision 1.10 1995/10/02 16:43:32 quinn
128 * Set default resulting record type in fetch.
130 * Revision 1.9 1995/10/02 15:18:52 adam
131 * New member in recRetrieveCtrl: diagnostic.
133 * Revision 1.8 1995/09/28 09:19:47 adam
134 * xfree/xmalloc used everywhere.
135 * Extract/retrieve method seems to work for text records.
137 * Revision 1.7 1995/09/27 16:17:32 adam
138 * More work on retrieve.
140 * Revision 1.6 1995/09/08 08:53:22 adam
141 * Record buffer maintained in server_info.
143 * Revision 1.5 1995/09/06 16:11:18 adam
144 * Option: only one word key per file.
146 * Revision 1.4 1995/09/06 10:33:04 adam
147 * More work on present. Some log messages removed.
149 * Revision 1.3 1995/09/05 15:28:40 adam
150 * More work on search engine.
152 * Revision 1.2 1995/09/04 12:33:43 adam
153 * Various cleanup. YAZ util used instead.
155 * Revision 1.1 1995/09/04 09:10:41 adam
156 * More work on index add/del/update.
157 * Merge sort implemented.
158 * Initial work on z39 server.
176 #include <sys/times.h>
180 ZServerInfo server_info;
183 static struct tms tms1;
184 static struct tms tms2;
187 static int register_lock (ZServerInfo *zi)
190 int state = zebraServerLockGetState(&lastChange);
200 zebraServerLock (state);
204 if (zi->registerState == state)
206 if (zi->registerChange >= lastChange)
208 logf (LOG_LOG, "Register completely updated since last access");
210 else if (zi->registerState == -1)
211 logf (LOG_LOG, "Reading register using state %d pid=%ld", state,
214 logf (LOG_LOG, "Register has changed state from %d to %d",
215 zi->registerState, state);
216 zi->registerChange = lastChange;
219 zebTargetInfo_close (zi->zti, 0);
220 dict_close (zi->dict);
224 isc_close (zi->isamc);
225 rec_close (&zi->records);
228 zi->registerState = state;
229 zi->records = rec_open (0);
230 if (!(zi->dict = dict_open (FNAME_DICT, 40, 0)))
234 if (res_get_match (common_resource, "isam", "c", NULL))
236 if (!(zi->isamc = isc_open (FNAME_ISAMC, 0, key_isamc_m())))
242 if (!(zi->isam = is_open (FNAME_ISAM, key_compare, 0,
243 sizeof (struct it_key))))
246 zi->zti = zebTargetInfo_open (zi->records, 0);
251 static void register_unlock (ZServerInfo *zi)
253 static int waitSec = -1;
257 logf (LOG_LOG, "user/system: %ld/%ld",
258 (long) (tms2.tms_utime - tms1.tms_utime),
259 (long) (tms2.tms_stime - tms1.tms_stime));
263 char *s = res_get (common_resource, "debugRequestWait");
271 if (zi->registerState != -1)
272 zebraServerUnlock (zi->registerState);
275 bend_initresult *bend_init (bend_initrequest *q)
277 static bend_initresult r;
278 static char *name = "zserver";
284 logf (LOG_DEBUG, "bend_init");
286 if (!common_resource)
288 struct statserv_options_block *sob;
290 sob = statserv_getcontrol ();
291 logf (LOG_LOG, "Reading resources from %s", sob->configname);
292 if (!(common_resource = res_open (sob->configname)))
294 logf (LOG_FATAL, "Cannot open resource `%s'", sob->configname);
297 bf_lockDir (res_get (common_resource, "lockDir"));
298 data1_set_tabpath (res_get(common_resource, "profilePath"));
300 server_info.sets = NULL;
301 server_info.registerState = -1; /* trigger open of registers! */
302 server_info.registerChange = 0;
304 server_info.records = NULL;
305 server_info.odr = odr_createmem (ODR_ENCODE);
309 bend_searchresult *bend_search (void *handle, bend_searchrequest *q, int *fd)
311 static bend_searchresult r;
317 register_lock (&server_info);
318 odr_reset (server_info.odr);
319 server_info.errCode = 0;
320 server_info.errString = NULL;
322 logf (LOG_LOG, "ResultSet '%s'", q->setname);
323 switch (q->query->which)
325 case Z_Query_type_1: case Z_Query_type_101:
326 r.errcode = rpn_search (&server_info, q->query->u.type_1,
327 q->num_bases, q->basenames, q->setname,
329 r.errstring = server_info.errString;
334 register_unlock (&server_info);
338 static int record_offset;
340 static int record_ext_read (void *fh, char *buf, size_t count)
342 return read (*((int*) fh), buf, count);
345 static off_t record_ext_seek (void *fh, off_t offset)
347 return lseek (*((int*) fh), offset + record_offset, SEEK_SET);
350 static int record_int_pos;
351 static char *record_int_buf;
352 static int record_int_len;
354 static off_t record_int_seek (void *fh, off_t offset)
356 return (off_t) (record_int_pos = offset);
359 static int record_int_read (void *fh, char *buf, size_t count)
361 int l = record_int_len - record_int_pos;
364 l = (l < count) ? l : count;
365 memcpy (buf, record_int_buf + record_int_pos, l);
370 static int record_fetch (ZServerInfo *zi, int sysno, int score, ODR stream,
371 oid_value input_format, Z_RecordComposition *comp,
372 oid_value *output_format, char **rec_bufp,
373 int *rec_lenp, char **basenamep)
376 char *fname, *file_type, *basename;
379 struct recRetrieveCtrl retrieveCtrl;
382 rec = rec_get (zi->records, sysno);
385 char *msg = "Record is deleted\n";
386 *output_format = VAL_SUTRS;
388 *rec_lenp = strlen (msg);
389 logf (LOG_DEBUG, "rec_get fail on sysno=%d", sysno);
392 file_type = rec->info[recInfo_fileType];
393 fname = rec->info[recInfo_filename];
394 basename = rec->info[recInfo_databaseName];
395 *basenamep = odr_malloc (stream, strlen(basename)+1);
396 strcpy (*basenamep, basename);
398 if (!(rt = recType_byName (file_type, subType)))
400 logf (LOG_FATAL|LOG_ERRNO, "Retrieve: Cannot handle type %s",
404 logf (LOG_DEBUG, "retrieve localno=%d score=%d", sysno, score);
405 if (rec->size[recInfo_storeData] > 0)
407 retrieveCtrl.readf = record_int_read;
408 retrieveCtrl.seekf = record_int_seek;
409 record_int_len = rec->size[recInfo_storeData];
410 record_int_buf = rec->info[recInfo_storeData];
412 logf (LOG_DEBUG, "Internal retrieve. %d bytes", record_int_len);
416 if ((fd = open (fname, O_RDONLY)) == -1)
418 char *msg = "Record doesn't exist\n";
419 logf (LOG_WARN|LOG_ERRNO, "Retrieve: Open record file %s", fname);
420 *output_format = VAL_SUTRS;
422 *rec_lenp = strlen (msg);
424 return 0; /* or 14: System error in presenting records */
427 memcpy (&record_offset, rec->info[recInfo_offset],
428 sizeof(record_offset));
430 retrieveCtrl.fh = &fd;
431 retrieveCtrl.readf = record_ext_read;
432 retrieveCtrl.seekf = record_ext_seek;
434 record_ext_seek (retrieveCtrl.fh, 0);
436 retrieveCtrl.subType = subType;
437 retrieveCtrl.localno = sysno;
438 retrieveCtrl.score = score;
439 retrieveCtrl.odr = stream;
440 retrieveCtrl.input_format = retrieveCtrl.output_format = input_format;
441 retrieveCtrl.comp = comp;
442 retrieveCtrl.diagnostic = 0;
443 (*rt->retrieve)(&retrieveCtrl);
444 *output_format = retrieveCtrl.output_format;
445 *rec_bufp = retrieveCtrl.rec_buf;
446 *rec_lenp = retrieveCtrl.rec_len;
451 return retrieveCtrl.diagnostic;
454 bend_fetchresult *bend_fetch (void *handle, bend_fetchrequest *q, int *num)
456 static bend_fetchresult r;
458 ZServerSetSysno *records;
460 register_lock (&server_info);
466 odr_reset (server_info.odr);
467 server_info.errCode = 0;
469 positions[0] = q->number;
470 records = resultSetSysnoGet (&server_info, q->setname, 1, positions);
473 logf (LOG_DEBUG, "resultSetRecordGet, error");
475 register_unlock (&server_info);
478 if (!records[0].sysno)
481 logf (LOG_DEBUG, "Out of range. pos=%d", q->number);
482 register_unlock (&server_info);
485 r.errcode = record_fetch (&server_info, records[0].sysno,
486 records[0].score, q->stream, q->format,
487 q->comp, &r.format, &r.record, &r.len,
489 resultSetSysnoDel (&server_info, records, 1);
490 register_unlock (&server_info);
494 bend_deleteresult *bend_delete (void *handle, bend_deleterequest *q, int *num)
496 register_lock (&server_info);
497 register_unlock (&server_info);
501 bend_scanresult *bend_scan (void *handle, bend_scanrequest *q, int *num)
503 static bend_scanresult r;
506 register_lock (&server_info);
507 odr_reset (server_info.odr);
508 server_info.errCode = 0;
509 server_info.errString = 0;
511 r.term_position = q->term_position;
512 r.num_entries = q->num_entries;
513 r.errcode = rpn_scan (&server_info, q->term,
515 q->num_bases, q->basenames,
517 &r.num_entries, &r.entries, &status);
518 r.errstring = server_info.errString;
520 register_unlock (&server_info);
524 void bend_close (void *handle)
526 if (server_info.records)
528 dict_close (server_info.dict);
529 if (server_info.isam)
530 is_close (server_info.isam);
531 if (server_info.isamc)
532 isc_close (server_info.isamc);
533 rec_close (&server_info.records);
534 register_unlock (&server_info);
539 int main (int argc, char **argv)
541 struct statserv_options_block *sob;
543 sob = statserv_getcontrol ();
544 strcpy (sob->configname, FNAME_CONFIG);
545 statserv_setcontrol (sob);
547 return statserv_main (argc, argv);