/*
- * Copyright (C) 1994-1995, Index Data I/S
+ * Copyright (C) 1995-1997, Index Data I/S
* All rights reserved.
* Sebastian Hammer, Adam Dickmeiss
*
* $Log: zserver.c,v $
- * Revision 1.24 1995-11-20 16:59:47 adam
+ * Revision 1.49 1997-09-25 14:57:23 adam
+ * Windows NT port.
+ *
+ * Revision 1.48 1997/09/17 12:19:19 adam
+ * Zebra version corresponds to YAZ version 1.4.
+ * Changed Zebra server so that it doesn't depend on global common_resource.
+ *
+ * Revision 1.47 1997/09/04 13:58:36 adam
+ * New retrieve/extract method tellf (added).
+ * Added O_BINARY for open calls.
+ *
+ * Revision 1.46 1997/07/28 08:30:47 adam
+ * Server returns diagnostic 14 when record doesn't exist.
+ *
+ * Revision 1.45 1996/12/23 15:30:45 adam
+ * Work on truncation.
+ * Bug fix: result sets weren't deleted after server shut down.
+ *
+ * Revision 1.44 1996/12/11 12:08:01 adam
+ * Added better compression.
+ *
+ * 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
*/
#include <stdio.h>
#include <assert.h>
+#ifdef WINDOWS
+#include <io.h>
+#include <process.h>
+#else
#include <unistd.h>
+#endif
#include <fcntl.h>
-#include <common.h>
#include <data1.h>
#include <recctrl.h>
#include <dmalloc.h>
+
+#ifdef __linux__
+#define USE_TIMES 1
+#endif
+
+#ifndef USE_TIMES
+#define USE_TIMES 0
+#endif
+
+#if USE_TIMES
+#include <sys/times.h>
+#endif
#include "zserver.h"
-ZServerInfo server_info;
-bend_initresult *bend_init (bend_initrequest *q)
-{
- static bend_initresult r;
- static char *name = "zserver";
+#if USE_TIMES
+static struct tms tms1;
+static struct tms tms2;
+#endif
- r.errcode = 0;
- r.errstring = 0;
- r.handle = name;
+static int register_lock (ZServerInfo *zi)
+{
+ time_t lastChange;
+ int state = zebraServerLockGetState(zi->res, &lastChange);
- logf (LOG_DEBUG, "bend_init");
- data1_tabpath = res_get(common_resource, "data1_tabpath");
- server_info.sets = NULL;
-#if RECORD_BASE
- server_info.records = rec_open (0);
-#else
- if (!(server_info.sys_idx_fd = open (FNAME_SYS_IDX, O_RDONLY)))
+ switch (state)
{
- logf (LOG_WARN|LOG_ERRNO, "sys_idx open fail");
- r.errcode = 1;
- r.errstring = "sys_idx open fail";
- return &r;
+ case 'c':
+ state = 1;
+ break;
+ default:
+ state = 0;
}
+ zebraServerLock (zi->res, state);
+#if USE_TIMES
+ times (&tms1);
#endif
- if (!(server_info.fileDict = dict_open (FNAME_FILE_DICT, 10, 0)))
+ if (zi->registerState == state)
{
- logf (LOG_WARN, "dict_open fail: fname dict");
- r.errcode = 1;
- r.errstring = "dict_open fail: fname dict";
- return &r;
- }
- if (!(server_info.wordDict = dict_open (FNAME_WORD_DICT, 40, 0)))
+ 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)
{
- logf (LOG_WARN, "dict_open fail: word dict");
- dict_close (server_info.fileDict);
- 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))))
+ 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 (zi->bfs, state ? res_get (zi->res, "shadow") : NULL);
+ zi->registerState = state;
+ zi->records = rec_open (zi->bfs, 0);
+ if (!(zi->dict = dict_open (zi->bfs, FNAME_DICT, 40, 0)))
+ return -1;
+ zi->isam = NULL;
+ zi->isamc = NULL;
+ if (res_get_match (zi->res, "isam", "c", NULL))
{
- logf (LOG_WARN, "is_open fail: word isam");
- dict_close (server_info.wordDict);
- dict_close (server_info.fileDict);
- r.errcode = 1;
- r.errstring = "is_open fail: word isam";
- return &r;
+ if (!(zi->isamc = isc_open (zi->bfs, FNAME_ISAMC,
+ 0, key_isamc_m(zi->res))))
+ return -1;
+
}
- server_info.odr = odr_createmem (ODR_ENCODE);
- return &r;
+ else
+ {
+ if (!(zi->isam = is_open (zi->bfs, FNAME_ISAM, key_compare, 0,
+ sizeof (struct it_key), zi->res)))
+ return -1;
+ }
+ zi->zti = zebTargetInfo_open (zi->records, 0);
+ init_charmap (zi->res);
+ return 0;
}
-bend_searchresult *bend_search (void *handle, bend_searchrequest *q, int *fd)
+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 (zi->res, "debugRequestWait");
+ if (s)
+ waitSec = atoi (s);
+ else
+ waitSec = 0;
+ }
+#ifdef WINDOWS
+#else
+ if (waitSec > 0)
+ sleep (waitSec);
+#endif
+ if (zi->registerState != -1)
+ zebraServerUnlock (zi->registerState);
+}
+
+bend_initresult *bend_init (bend_initrequest *q)
{
- static bend_searchresult r;
+ bend_initresult *r = odr_malloc (q->stream, sizeof(*r));
+ ZServerInfo *zi = xmalloc (sizeof(*zi));
+ struct statserv_options_block *sob;
+
+ r->errcode = 0;
+ r->errstring = 0;
+ r->handle = zi;
+
+ logf (LOG_DEBUG, "bend_init");
- r.errcode = 0;
- r.errstring = 0;
- r.hits = 0;
+ sob = statserv_getcontrol ();
+ logf (LOG_LOG, "Reading resources from %s", sob->configname);
+ if (!(zi->res = res_open (sob->configname)))
+ {
+ logf (LOG_FATAL, "Cannot open resource `%s'", sob->configname);
+ exit (1);
+ }
+ zi->dh = data1_create ();
+ zi->bfs = bfs_create (res_get (zi->res, "register"));
+ bf_lockDir (zi->bfs, res_get (zi->res, "lockDir"));
+ data1_set_tabpath (zi->dh, res_get(zi->res, "profilePath"));
+ zi->sets = NULL;
+ zi->registerState = -1; /* trigger open of registers! */
+ zi->registerChange = 0;
+
+ zi->records = NULL;
+ zi->odr = odr_createmem (ODR_ENCODE);
+ zi->registered_sets = NULL;
+ return r;
+}
+
+bend_searchresult *bend_search (void *handle, bend_searchrequest *q, int *fd)
+{
+ ZServerInfo *zi = handle;
+ bend_searchresult *r = odr_malloc (q->stream, sizeof(*r));
+ r->errcode = 0;
+ r->errstring = 0;
+ r->hits = 0;
- odr_reset (server_info.odr);
- server_info.errCode = 0;
- server_info.errString = NULL;
+ register_lock (zi);
+ odr_reset (zi->odr);
+ zi->errCode = 0;
+ zi->errString = NULL;
logf (LOG_LOG, "ResultSet '%s'", q->setname);
switch (q->query->which)
{
- case Z_Query_type_1:
- r.errcode = rpn_search (&server_info, q->query->u.type_1,
+ case Z_Query_type_1: case Z_Query_type_101:
+ r->errcode = rpn_search (zi, q->query->u.type_1,
q->num_bases, q->basenames, q->setname,
- &r.hits);
- r.errstring = server_info.errString;
+ &r->hits);
+ r->errstring = zi->errString;
break;
default:
- r.errcode = 107;
+ r->errcode = 107;
}
- return &r;
+ register_unlock (zi);
+ return r;
+}
+
+struct fetch_control {
+ int record_offset;
+ int record_int_pos;
+ char *record_int_buf;
+ int record_int_len;
+ int fd;
+};
+
+static int record_ext_read (void *fh, char *buf, size_t count)
+{
+ struct fetch_control *fc = fh;
+ return read (fc->fd, buf, count);
+}
+
+static off_t record_ext_seek (void *fh, off_t offset)
+{
+ struct fetch_control *fc = fh;
+ return lseek (fc->fd, offset + fc->record_offset, SEEK_SET);
+}
+
+static off_t record_ext_tell (void *fh)
+{
+ struct fetch_control *fc = fh;
+ return lseek (fc->fd, 0, SEEK_CUR) - fc->record_offset;
+}
+
+static off_t record_int_seek (void *fh, off_t offset)
+{
+ struct fetch_control *fc = fh;
+ return (off_t) (fc->record_int_pos = offset);
}
-static int record_read (int fd, char *buf, size_t count)
+static off_t record_int_tell (void *fh)
{
- return read (fd, buf, count);
+ struct fetch_control *fc = fh;
+ return (off_t) fc->record_int_pos;
+}
+
+static int record_int_read (void *fh, char *buf, size_t count)
+{
+ struct fetch_control *fc = fh;
+ int l = fc->record_int_len - fc->record_int_pos;
+ if (l <= 0)
+ return 0;
+ l = (l < count) ? l : count;
+ memcpy (buf, fc->record_int_buf + fc->record_int_pos, l);
+ fc->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)
+ int *rec_lenp, char **basenamep)
{
-#if RECORD_BASE
Record rec;
-#else
- char record_info[SYS_IDX_ENTRY_LEN];
-#endif
- char *fname, *file_type;
+ char *fname, *file_type, *basename;
RecType rt;
struct recRetrieveCtrl retrieveCtrl;
+ char subType[128];
+ struct fetch_control fc;
-#if RECORD_BASE
rec = rec_get (zi->records, sysno);
- file_type = rec->info[0];
- fname = rec->info[1];
-#else
- if (lseek (zi->sys_idx_fd, sysno * SYS_IDX_ENTRY_LEN,
- SEEK_SET) == -1)
- {
- logf (LOG_FATAL|LOG_ERRNO, "Retrieve: lseek of sys_idx");
- exit (1);
- }
- if (read (zi->sys_idx_fd, record_info, SYS_IDX_ENTRY_LEN) == -1)
+ if (!rec)
{
- logf (LOG_FATAL|LOG_ERRNO, "Retrieve: read of sys_idx");
- exit (1);
+ logf (LOG_DEBUG, "rec_get fail on sysno=%d", sysno);
+ return 14;
}
- file_type = record_info;
- fname = record_info + strlen(record_info) + 1;
-#endif
+ 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)))
+ if (!(rt = recType_byName (file_type, subType)))
{
logf (LOG_FATAL|LOG_ERRNO, "Retrieve: Cannot handle type %s",
file_type);
exit (1);
}
logf (LOG_DEBUG, "retrieve localno=%d score=%d", sysno, score);
- if ((retrieveCtrl.fd = open (fname, O_RDONLY)) == -1)
+ retrieveCtrl.fh = &fc;
+ fc.fd = -1;
+ if (rec->size[recInfo_storeData] > 0)
{
- char *msg = "Record doesn't exist";
- logf (LOG_WARN|LOG_ERRNO, "Retrieve: Open record file %s", fname);
- *output_format = VAL_SUTRS;
- *rec_bufp = msg;
- *rec_lenp = strlen (msg);
-#if RECORD_BASE
- rec_rm (&rec);
-#endif
- return 0; /* or 14: System error in presenting records */
+ retrieveCtrl.readf = record_int_read;
+ retrieveCtrl.seekf = record_int_seek;
+ retrieveCtrl.tellf = record_int_tell;
+ fc.record_int_len = rec->size[recInfo_storeData];
+ fc.record_int_buf = rec->info[recInfo_storeData];
+ fc.record_int_pos = 0;
+ logf (LOG_DEBUG, "Internal retrieve. %d bytes", fc.record_int_len);
}
+ else
+ {
+ if ((fc.fd = open (fname, O_BINARY|O_RDONLY)) == -1)
+ {
+ logf (LOG_WARN|LOG_ERRNO, "Retrieve fail; missing file: %s",
+ fname);
+ rec_rm (&rec);
+ return 14;
+ }
+ memcpy (&fc.record_offset, rec->info[recInfo_offset],
+ sizeof(fc.record_offset));
+
+ retrieveCtrl.readf = record_ext_read;
+ retrieveCtrl.seekf = record_ext_seek;
+ retrieveCtrl.tellf = record_ext_tell;
+
+ record_ext_seek (retrieveCtrl.fh, 0);
+ }
+ retrieveCtrl.subType = subType;
retrieveCtrl.localno = sysno;
retrieveCtrl.score = score;
retrieveCtrl.odr = stream;
- retrieveCtrl.readf = record_read;
retrieveCtrl.input_format = retrieveCtrl.output_format = input_format;
retrieveCtrl.comp = comp;
retrieveCtrl.diagnostic = 0;
+ retrieveCtrl.dh = zi->dh;
(*rt->retrieve)(&retrieveCtrl);
*output_format = retrieveCtrl.output_format;
*rec_bufp = retrieveCtrl.rec_buf;
*rec_lenp = retrieveCtrl.rec_len;
- close (retrieveCtrl.fd);
-#if RECORD_BASE
+ if (fc.fd != -1)
+ close (fc.fd);
rec_rm (&rec);
-#endif
+
return retrieveCtrl.diagnostic;
}
bend_fetchresult *bend_fetch (void *handle, bend_fetchrequest *q, int *num)
{
- static bend_fetchresult r;
+ ZServerInfo *zi = handle;
+ bend_fetchresult *r = odr_malloc (q->stream, sizeof(*r));
int positions[2];
ZServerSetSysno *records;
- r.errstring = 0;
- r.last_in_set = 0;
- r.basename = "base";
+ register_lock (zi);
- odr_reset (server_info.odr);
- server_info.errCode = 0;
+ r->errstring = 0;
+ r->last_in_set = 0;
+ r->basename = "base";
+
+ odr_reset (zi->odr);
+ zi->errCode = 0;
positions[0] = q->number;
- records = resultSetSysnoGet (&server_info, q->setname, 1, positions);
+ records = resultSetSysnoGet (zi, q->setname, 1, positions);
if (!records)
{
logf (LOG_DEBUG, "resultSetRecordGet, error");
- r.errcode = 13;
- return &r;
+ r->errcode = 13;
+ register_unlock (zi);
+ return r;
}
if (!records[0].sysno)
{
- r.errcode = 13;
+ r->errcode = 13;
logf (LOG_DEBUG, "Out of range. pos=%d", q->number);
- return &r;
+ register_unlock (zi);
+ return r;
}
- r.errcode = record_fetch (&server_info, records[0].sysno,
+ r->errcode = record_fetch (zi, records[0].sysno,
records[0].score, q->stream, q->format,
- q->comp, &r.format, &r.record, &r.len);
- resultSetSysnoDel (&server_info, records, 1);
- return &r;
+ q->comp, &r->format, &r->record, &r->len,
+ &r->basename);
+ resultSetSysnoDel (zi, records, 1);
+ register_unlock (zi);
+ return r;
}
bend_deleteresult *bend_delete (void *handle, bend_deleterequest *q, int *num)
{
+ ZServerInfo *zi = handle;
+ register_lock (zi);
+ register_unlock (zi);
return 0;
}
bend_scanresult *bend_scan (void *handle, bend_scanrequest *q, int *num)
{
- static bend_scanresult r;
+ ZServerInfo *zi = handle;
+ bend_scanresult *r = odr_malloc (q->stream, sizeof(*r));
int status;
- odr_reset (server_info.odr);
- server_info.errCode = 0;
- server_info.errString = 0;
+ register_lock (zi);
+ odr_reset (zi->odr);
+ zi->errCode = 0;
+ zi->errString = 0;
- r.term_position = q->term_position;
- r.num_entries = q->num_entries;
- r.errcode = rpn_scan (&server_info, q->term,
+ r->term_position = q->term_position;
+ r->num_entries = q->num_entries;
+ r->errcode = rpn_scan (zi, 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;
- return &r;
+ &r->term_position,
+ &r->num_entries, &r->entries, &status);
+ r->errstring = zi->errString;
+ r->status = status;
+ register_unlock (zi);
+ return r;
}
void bend_close (void *handle)
{
- dict_close (server_info.fileDict);
- dict_close (server_info.wordDict);
- is_close (server_info.wordIsam);
-#if RECORD_BASE
- rec_close (&server_info.records);
-#else
- close (server_info.sys_idx_fd);
-#endif
+ ZServerInfo *zi = handle;
+ if (zi->records)
+ {
+ resultSetDestroy (zi);
+ dict_close (zi->dict);
+ if (zi->isam)
+ is_close (zi->isam);
+ if (zi->isamc)
+ isc_close (zi->isamc);
+ rec_close (&zi->records);
+ register_unlock (zi);
+ }
+ bfs_destroy (zi->bfs);
+ data1_destroy (zi->dh);
return;
}
int main (int argc, char **argv)
{
- char *base_name = "base";
+ struct statserv_options_block *sob;
+
+ sob = statserv_getcontrol ();
+ strcpy (sob->configname, FNAME_CONFIG);
+ statserv_setcontrol (sob);
- if (!(common_resource = res_open (base_name)))
- {
- logf (LOG_FATAL, "Cannot open resource `%s'", base_name);
- exit (1);
- }
return statserv_main (argc, argv);
}