/*
- * Copyright (C) 1994-1995, Index Data I/S
+ * Copyright (C) 1995-1996, Index Data I/S
* All rights reserved.
* Sebastian Hammer, Adam Dickmeiss
*
* $Log: zserver.c,v $
- * Revision 1.28 1995-11-28 09:09:48 adam
+ * 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
ZServerInfo server_info;
+static int register_lock (ZServerInfo *zi)
+{
+ time_t lastChange;
+ int state = zebraServerLockGetState(&lastChange);
+
+ switch (state)
+ {
+ case 'c':
+ state = 1;
+ break;
+ default:
+ state = 0;
+ }
+ zebraServerLock (state);
+ 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 (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;
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"));
}
-
- data1_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 = rec_open (0);
- if (!(server_info.wordDict = dict_open (FNAME_WORD_DICT, 40, 0)))
- {
- logf (LOG_WARN, "dict_open fail: word dict");
- r.errcode = 1;
- r.errstring = "dict_open fail: word dict";
- return &r;
- }
- if (!(server_info.wordIsam = is_open (FNAME_WORD_ISAM, key_compare, 0,
- sizeof (struct it_key))))
- {
- logf (LOG_WARN, "is_open fail: word isam");
- dict_close (server_info.wordDict);
- r.errcode = 1;
- r.errstring = "is_open fail: word isam";
- return &r;
- }
+ server_info.records = NULL;
server_info.odr = odr_createmem (ODR_ENCODE);
return &r;
}
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_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);
default:
r.errcode = 107;
}
+ register_unlock (&server_info);
return &r;
}
-static int record_ext_read (int fd, char *buf, size_t count)
+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 read (fd, buf, count);
+ 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 int record_int_read (int fd, char *buf, size_t count)
+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)
Record rec;
char *fname, *file_type;
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;
+ }
file_type = rec->info[recInfo_fileType];
fname = rec->info[recInfo_filename];
- if (!(rt = recType_byName (file_type)))
+ if (!(rt = recType_byName (file_type, subType)))
{
logf (LOG_FATAL|LOG_ERRNO, "Retrieve: Cannot handle type %s",
file_type);
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;
}
else
{
- if ((retrieveCtrl.fd = open (fname, O_RDONLY)) == -1)
+ if ((fd = open (fname, O_RDONLY)) == -1)
{
- char *msg = "Record doesn't exist";
+ 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_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;
*output_format = retrieveCtrl.output_format;
*rec_bufp = retrieveCtrl.rec_buf;
*rec_lenp = retrieveCtrl.rec_len;
- close (retrieveCtrl.fd);
+ if (fd != -1)
+ close (fd);
rec_rm (&rec);
return retrieveCtrl.diagnostic;
int positions[2];
ZServerSetSysno *records;
+ register_lock (&server_info);
+
r.errstring = 0;
r.last_in_set = 0;
r.basename = "base";
{
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);
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;
}
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)
{
- dict_close (server_info.wordDict);
- is_close (server_info.wordIsam);
- rec_close (&server_info.records);
+ 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;
}
projects / idzebra-moved-to-github.git / blobdiff