/*
- * Copyright (C) 1995, Index Data I/S
+ * Copyright (C) 1995-1996, Index Data I/S
* All rights reserved.
* Sebastian Hammer, Adam Dickmeiss
*
* $Log: zserver.c,v $
- * Revision 1.2 1995-09-04 12:33:43 adam
+ * Revision 1.43 1996-11-15 15:03:58 adam
+ * Logging of execution speed by using the times(2) call.
+ *
+ * Revision 1.42 1996/11/08 11:10:36 adam
+ * Buffers used during file match got bigger.
+ * Compressed ISAM support everywhere.
+ * Bug fixes regarding masking characters in queries.
+ * Redesigned Regexp-2 queries.
+ *
+ * Revision 1.41 1996/10/29 14:09:56 adam
+ * Use of cisam system - enabled if setting isamc is 1.
+ *
+ * Revision 1.40 1996/06/04 10:19:02 adam
+ * Minor changes - removed include of ctype.h.
+ *
+ * Revision 1.39 1996/05/31 09:07:05 quinn
+ * Work on character-set handling
+ *
+ * Revision 1.38 1996/05/14 11:34:01 adam
+ * Scan support in multiple registers/databases.
+ *
+ * Revision 1.37 1996/05/14 06:16:48 adam
+ * Compact use/set bytes used in search service.
+ *
+ * Revision 1.36 1996/05/01 13:46:37 adam
+ * First work on multiple records in one file.
+ * New option, -offset, to the "unread" command in the filter module.
+ *
+ * Revision 1.35 1996/03/26 16:01:14 adam
+ * New setting lockPath: directory of various lock files.
+ *
+ * Revision 1.34 1996/03/20 09:36:46 adam
+ * Function dict_lookup_grep got extra parameter, init_pos, which marks
+ * from which position in pattern approximate pattern matching should occur.
+ * Approximate pattern matching is used in relevance=re-2.
+ *
+ * Revision 1.33 1996/01/17 14:57:56 adam
+ * Prototype changed for reader functions in extract/retrieve. File
+ * is identified by 'void *' instead of 'int.
+ *
+ * Revision 1.32 1995/12/11 09:12:58 adam
+ * The rec_get function returns NULL if record doesn't exist - will
+ * happen in the server if the result set records have been deleted since
+ * the creation of the set (i.e. the search).
+ * The server saves a result temporarily if it is 'volatile', i.e. the
+ * set is register dependent.
+ *
+ * Revision 1.31 1995/12/08 16:22:56 adam
+ * Work on update while servers are running. Three lock files introduced.
+ * The servers reload their registers when necessary, but they don't
+ * reestablish result sets yet.
+ *
+ * Revision 1.30 1995/12/07 17:38:48 adam
+ * Work locking mechanisms for concurrent updates/commit.
+ *
+ * Revision 1.29 1995/12/04 14:22:32 adam
+ * Extra arg to recType_byName.
+ * Started work on new regular expression parsed input to
+ * structured records.
+ *
+ * Revision 1.28 1995/11/28 09:09:48 adam
+ * Zebra config renamed.
+ * Use setting 'recordId' to identify record now.
+ * Bug fix in recindex.c: rec_release_blocks was invokeded even
+ * though the blocks were already released.
+ * File traversal properly deletes records when needed.
+ *
+ * Revision 1.27 1995/11/27 13:58:54 adam
+ * New option -t. storeStore data implemented in server.
+ *
+ * Revision 1.26 1995/11/25 10:24:07 adam
+ * More record fields - they are enumerated now.
+ * New options: flagStoreData flagStoreKey.
+ *
+ * Revision 1.25 1995/11/21 15:29:13 adam
+ * Config file 'base' read by default by both indexer and server.
+ *
+ * Revision 1.24 1995/11/20 16:59:47 adam
+ * New update method: the 'old' keys are saved for each records.
+ *
+ * Revision 1.23 1995/11/16 17:00:56 adam
+ * Better logging of rpn query.
+ *
+ * Revision 1.22 1995/11/16 15:34:55 adam
+ * Uses new record management system in both indexer and server.
+ *
+ * Revision 1.21 1995/11/01 16:25:52 quinn
+ * *** empty log message ***
+ *
+ * Revision 1.20 1995/10/27 14:00:12 adam
+ * Implemented detection of database availability.
+ *
+ * Revision 1.19 1995/10/17 18:02:11 adam
+ * New feature: databases. Implemented as prefix to words in dictionary.
+ *
+ * Revision 1.18 1995/10/16 14:03:09 quinn
+ * Changes to support element set names and espec1
+ *
+ * Revision 1.17 1995/10/16 09:32:40 adam
+ * More work on relational op.
+ *
+ * Revision 1.16 1995/10/13 12:26:44 adam
+ * Optimization of truncation.
+ *
+ * Revision 1.15 1995/10/12 12:40:55 adam
+ * Bug fixes in rpn_prox.
+ *
+ * Revision 1.14 1995/10/09 16:18:37 adam
+ * Function dict_lookup_grep got extra client data parameter.
+ *
+ * Revision 1.13 1995/10/06 14:38:00 adam
+ * New result set method: r_score.
+ * Local no (sysno) and score is transferred to retrieveCtrl.
+ *
+ * Revision 1.12 1995/10/06 13:52:06 adam
+ * Bug fixes. Handler may abort further scanning.
+ *
+ * Revision 1.11 1995/10/06 10:43:57 adam
+ * Scan added. 'occurrences' in scan entries not set yet.
+ *
+ * Revision 1.10 1995/10/02 16:43:32 quinn
+ * Set default resulting record type in fetch.
+ *
+ * Revision 1.9 1995/10/02 15:18:52 adam
+ * New member in recRetrieveCtrl: diagnostic.
+ *
+ * Revision 1.8 1995/09/28 09:19:47 adam
+ * xfree/xmalloc used everywhere.
+ * Extract/retrieve method seems to work for text records.
+ *
+ * Revision 1.7 1995/09/27 16:17:32 adam
+ * More work on retrieve.
+ *
+ * Revision 1.6 1995/09/08 08:53:22 adam
+ * Record buffer maintained in server_info.
+ *
+ * Revision 1.5 1995/09/06 16:11:18 adam
+ * Option: only one word key per file.
+ *
+ * Revision 1.4 1995/09/06 10:33:04 adam
+ * More work on present. Some log messages removed.
+ *
+ * Revision 1.3 1995/09/05 15:28:40 adam
+ * More work on search engine.
+ *
+ * Revision 1.2 1995/09/04 12:33:43 adam
* Various cleanup. YAZ util used instead.
*
* Revision 1.1 1995/09/04 09:10:41 adam
#include <stdio.h>
#include <assert.h>
#include <unistd.h>
+#include <fcntl.h>
-#include <alexutil.h>
-#include "index.h"
+#include <common.h>
+#include <data1.h>
+#include <recctrl.h>
+#include <dmalloc.h>
-char *prog;
+#ifdef __LINUX__
+#define USE_TIMES 1
+#endif
-int main (int argc, char **argv)
+#if USE_TIMES
+#include <sys/times.h>
+#endif
+#include "zserver.h"
+
+ZServerInfo server_info;
+
+#if USE_TIMES
+static struct tms tms1;
+static struct tms tms2;
+#endif
+
+static int register_lock (ZServerInfo *zi)
{
- int ret;
- char *arg;
- char *base_name = NULL;
+ time_t lastChange;
+ int state = zebraServerLockGetState(&lastChange);
- prog = *argv;
- while ((ret = options ("v:", argv, argc, &arg)) != -2)
+ switch (state)
{
- if (ret == 0)
- {
- if (!base_name)
- {
- base_name = arg;
-
- common_resource = res_open (base_name);
- if (!common_resource)
- {
- logf (LOG_FATAL, "Cannot open resource `%s'", base_name);
- exit (1);
- }
- }
- }
- else if (ret == 'v')
- {
- log_init (log_mask_str(arg), prog, NULL);
- }
+ case 'c':
+ state = 1;
+ break;
+ default:
+ state = 0;
+ }
+ zebraServerLock (state);
+#if USE_TIMES
+ times (&tms1);
+#endif
+ if (zi->registerState == state)
+ {
+ if (zi->registerChange >= lastChange)
+ return 0;
+ logf (LOG_LOG, "Register completely updated since last access");
+ }
+ else if (zi->registerState == -1)
+ logf (LOG_LOG, "Reading register using state %d pid=%ld", state,
+ (long) getpid());
+ else
+ logf (LOG_LOG, "Register has changed state from %d to %d",
+ zi->registerState, state);
+ zi->registerChange = lastChange;
+ if (zi->records)
+ {
+ zebTargetInfo_close (zi->zti, 0);
+ dict_close (zi->dict);
+ if (zi->isam)
+ is_close (zi->isam);
+ if (zi->isamc)
+ isc_close (zi->isamc);
+ rec_close (&zi->records);
+ }
+ bf_cache (state);
+ zi->registerState = state;
+ zi->records = rec_open (0);
+ if (!(zi->dict = dict_open (FNAME_DICT, 40, 0)))
+ return -1;
+ zi->isam = NULL;
+ zi->isamc = NULL;
+ if (res_get_match (common_resource, "isam", "c", NULL))
+ {
+ if (!(zi->isamc = isc_open (FNAME_ISAMC, 0, key_isamc_m())))
+ return -1;
+
+ }
+ else
+ {
+ if (!(zi->isam = is_open (FNAME_ISAM, key_compare, 0,
+ sizeof (struct it_key))))
+ return -1;
+ }
+ zi->zti = zebTargetInfo_open (zi->records, 0);
+ init_charmap ();
+ return 0;
+}
+
+static void register_unlock (ZServerInfo *zi)
+{
+ static int waitSec = -1;
+
+#if USE_TIMES
+ times (&tms2);
+ logf (LOG_LOG, "user/system: %ld/%ld",
+ (long) (tms2.tms_utime - tms1.tms_utime),
+ (long) (tms2.tms_stime - tms1.tms_stime));
+#endif
+ if (waitSec == -1)
+ {
+ char *s = res_get (common_resource, "debugRequestWait");
+ if (s)
+ waitSec = atoi (s);
else
+ waitSec = 0;
+ }
+ if (waitSec > 0)
+ sleep (waitSec);
+ if (zi->registerState != -1)
+ zebraServerUnlock (zi->registerState);
+}
+
+bend_initresult *bend_init (bend_initrequest *q)
+{
+ static bend_initresult r;
+ static char *name = "zserver";
+
+ r.errcode = 0;
+ r.errstring = 0;
+ r.handle = name;
+
+ logf (LOG_DEBUG, "bend_init");
+
+ if (!common_resource)
+ {
+ struct statserv_options_block *sob;
+
+ sob = statserv_getcontrol ();
+ logf (LOG_LOG, "Reading resources from %s", sob->configname);
+ if (!(common_resource = res_open (sob->configname)))
{
- logf (LOG_FATAL, "Unknown option '-%s'", arg);
+ logf (LOG_FATAL, "Cannot open resource `%s'", sob->configname);
exit (1);
}
+ bf_lockDir (res_get (common_resource, "lockDir"));
+ data1_set_tabpath (res_get(common_resource, "profilePath"));
+ }
+ server_info.sets = NULL;
+ server_info.registerState = -1; /* trigger open of registers! */
+ server_info.registerChange = 0;
+
+ server_info.records = NULL;
+ server_info.odr = odr_createmem (ODR_ENCODE);
+ return &r;
+}
+
+bend_searchresult *bend_search (void *handle, bend_searchrequest *q, int *fd)
+{
+ static bend_searchresult r;
+
+ r.errcode = 0;
+ r.errstring = 0;
+ r.hits = 0;
+
+ register_lock (&server_info);
+ odr_reset (server_info.odr);
+ server_info.errCode = 0;
+ server_info.errString = NULL;
+
+ logf (LOG_LOG, "ResultSet '%s'", q->setname);
+ switch (q->query->which)
+ {
+ case Z_Query_type_1: case Z_Query_type_101:
+ r.errcode = rpn_search (&server_info, q->query->u.type_1,
+ q->num_bases, q->basenames, q->setname,
+ &r.hits);
+ r.errstring = server_info.errString;
+ break;
+ default:
+ r.errcode = 107;
+ }
+ register_unlock (&server_info);
+ return &r;
+}
+
+static int record_offset;
+
+static int record_ext_read (void *fh, char *buf, size_t count)
+{
+ return read (*((int*) fh), buf, count);
+}
+
+static off_t record_ext_seek (void *fh, off_t offset)
+{
+ return lseek (*((int*) fh), offset + record_offset, SEEK_SET);
+}
+
+static int record_int_pos;
+static char *record_int_buf;
+static int record_int_len;
+
+static off_t record_int_seek (void *fh, off_t offset)
+{
+ return (off_t) (record_int_pos = offset);
+}
+
+static int record_int_read (void *fh, char *buf, size_t count)
+{
+ int l = record_int_len - record_int_pos;
+ if (l <= 0)
+ return 0;
+ l = (l < count) ? l : count;
+ memcpy (buf, record_int_buf + record_int_pos, l);
+ record_int_pos += l;
+ return l;
+}
+
+static int record_fetch (ZServerInfo *zi, int sysno, int score, ODR stream,
+ oid_value input_format, Z_RecordComposition *comp,
+ oid_value *output_format, char **rec_bufp,
+ int *rec_lenp, char **basenamep)
+{
+ Record rec;
+ char *fname, *file_type, *basename;
+ RecType rt;
+ int fd = -1;
+ struct recRetrieveCtrl retrieveCtrl;
+ char subType[128];
+
+ rec = rec_get (zi->records, sysno);
+ if (!rec)
+ {
+ char *msg = "Record is deleted\n";
+ *output_format = VAL_SUTRS;
+ *rec_bufp = msg;
+ *rec_lenp = strlen (msg);
+ logf (LOG_DEBUG, "rec_get fail on sysno=%d", sysno);
+ return 0;
}
- if (!base_name)
+ file_type = rec->info[recInfo_fileType];
+ fname = rec->info[recInfo_filename];
+ basename = rec->info[recInfo_databaseName];
+ *basenamep = odr_malloc (stream, strlen(basename)+1);
+ strcpy (*basenamep, basename);
+
+ if (!(rt = recType_byName (file_type, subType)))
{
- fprintf (stderr, "zserver [-v log] base ...\n");
+ logf (LOG_FATAL|LOG_ERRNO, "Retrieve: Cannot handle type %s",
+ file_type);
exit (1);
}
- exit (0);
+ logf (LOG_DEBUG, "retrieve localno=%d score=%d", sysno, score);
+ if (rec->size[recInfo_storeData] > 0)
+ {
+ retrieveCtrl.readf = record_int_read;
+ retrieveCtrl.seekf = record_int_seek;
+ record_int_len = rec->size[recInfo_storeData];
+ record_int_buf = rec->info[recInfo_storeData];
+ record_int_pos = 0;
+ logf (LOG_DEBUG, "Internal retrieve. %d bytes", record_int_len);
+ }
+ else
+ {
+ if ((fd = open (fname, O_RDONLY)) == -1)
+ {
+ char *msg = "Record doesn't exist\n";
+ logf (LOG_WARN|LOG_ERRNO, "Retrieve: Open record file %s", fname);
+ *output_format = VAL_SUTRS;
+ *rec_bufp = msg;
+ *rec_lenp = strlen (msg);
+ rec_rm (&rec);
+ return 0; /* or 14: System error in presenting records */
+ }
+
+ memcpy (&record_offset, rec->info[recInfo_offset],
+ sizeof(record_offset));
+
+ retrieveCtrl.fh = &fd;
+ retrieveCtrl.readf = record_ext_read;
+ retrieveCtrl.seekf = record_ext_seek;
+
+ record_ext_seek (retrieveCtrl.fh, 0);
+ }
+ retrieveCtrl.subType = subType;
+ retrieveCtrl.localno = sysno;
+ retrieveCtrl.score = score;
+ retrieveCtrl.odr = stream;
+ retrieveCtrl.input_format = retrieveCtrl.output_format = input_format;
+ retrieveCtrl.comp = comp;
+ retrieveCtrl.diagnostic = 0;
+ (*rt->retrieve)(&retrieveCtrl);
+ *output_format = retrieveCtrl.output_format;
+ *rec_bufp = retrieveCtrl.rec_buf;
+ *rec_lenp = retrieveCtrl.rec_len;
+ if (fd != -1)
+ close (fd);
+ rec_rm (&rec);
+
+ return retrieveCtrl.diagnostic;
+}
+
+bend_fetchresult *bend_fetch (void *handle, bend_fetchrequest *q, int *num)
+{
+ static bend_fetchresult r;
+ int positions[2];
+ ZServerSetSysno *records;
+
+ register_lock (&server_info);
+
+ r.errstring = 0;
+ r.last_in_set = 0;
+ r.basename = "base";
+
+ odr_reset (server_info.odr);
+ server_info.errCode = 0;
+
+ positions[0] = q->number;
+ records = resultSetSysnoGet (&server_info, q->setname, 1, positions);
+ if (!records)
+ {
+ logf (LOG_DEBUG, "resultSetRecordGet, error");
+ r.errcode = 13;
+ register_unlock (&server_info);
+ return &r;
+ }
+ if (!records[0].sysno)
+ {
+ r.errcode = 13;
+ logf (LOG_DEBUG, "Out of range. pos=%d", q->number);
+ register_unlock (&server_info);
+ return &r;
+ }
+ r.errcode = record_fetch (&server_info, records[0].sysno,
+ records[0].score, q->stream, q->format,
+ q->comp, &r.format, &r.record, &r.len,
+ &r.basename);
+ resultSetSysnoDel (&server_info, records, 1);
+ register_unlock (&server_info);
+ return &r;
+}
+
+bend_deleteresult *bend_delete (void *handle, bend_deleterequest *q, int *num)
+{
+ register_lock (&server_info);
+ register_unlock (&server_info);
+ return 0;
+}
+
+bend_scanresult *bend_scan (void *handle, bend_scanrequest *q, int *num)
+{
+ static bend_scanresult r;
+ int status;
+
+ register_lock (&server_info);
+ odr_reset (server_info.odr);
+ server_info.errCode = 0;
+ server_info.errString = 0;
+
+ r.term_position = q->term_position;
+ r.num_entries = q->num_entries;
+ r.errcode = rpn_scan (&server_info, q->term,
+ q->attributeset,
+ q->num_bases, q->basenames,
+ &r.term_position,
+ &r.num_entries, &r.entries, &status);
+ r.errstring = server_info.errString;
+ r.status = status;
+ register_unlock (&server_info);
+ return &r;
+}
+
+void bend_close (void *handle)
+{
+ if (server_info.records)
+ {
+ dict_close (server_info.dict);
+ if (server_info.isam)
+ is_close (server_info.isam);
+ if (server_info.isamc)
+ isc_close (server_info.isamc);
+ rec_close (&server_info.records);
+ register_unlock (&server_info);
+ }
+ return;
+}
+
+int main (int argc, char **argv)
+{
+ struct statserv_options_block *sob;
+
+ sob = statserv_getcontrol ();
+ strcpy (sob->configname, FNAME_CONFIG);
+ statserv_setcontrol (sob);
+
+ return statserv_main (argc, argv);
}
projects / idzebra-moved-to-github.git / blobdiff