X-Git-Url: http://git.indexdata.com/?a=blobdiff_plain;f=index%2Fzserver.c;h=7bc66ae48be77ad9e6fb35e1dccebd14890726fa;hb=45554249f7785e31125a062dc410a93ef693f574;hp=2bfe9c88b09eda4f5373369ae7b2b9f2974b64e2;hpb=162fa86044b5aa303c03fa26f1ecf140b34060d5;p=idzebra-moved-to-github.git diff --git a/index/zserver.c b/index/zserver.c index 2bfe9c8..7bc66ae 100644 --- a/index/zserver.c +++ b/index/zserver.c @@ -1,10 +1,61 @@ /* - * 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 @@ -111,6 +162,85 @@ 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; @@ -133,28 +263,14 @@ bend_initresult *bend_init (bend_initrequest *q) 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; } @@ -167,7 +283,7 @@ bend_searchresult *bend_search (void *handle, bend_searchrequest *q, int *fd) r.errstring = 0; r.hits = 0; - + register_lock (&server_info); odr_reset (server_info.odr); server_info.errCode = 0; server_info.errString = NULL; @@ -175,7 +291,7 @@ bend_searchresult *bend_search (void *handle, bend_searchrequest *q, int *fd) 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); @@ -184,19 +300,32 @@ bend_searchresult *bend_search (void *handle, bend_searchrequest *q, int *fd) 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) @@ -215,13 +344,24 @@ static int record_fetch (ZServerInfo *zi, int sysno, int score, ODR stream, 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); @@ -231,6 +371,7 @@ static int record_fetch (ZServerInfo *zi, int sysno, int score, ODR stream, 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; @@ -238,9 +379,9 @@ static int record_fetch (ZServerInfo *zi, int sysno, int score, ODR stream, } 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; @@ -248,8 +389,17 @@ static int record_fetch (ZServerInfo *zi, int sysno, int score, ODR stream, 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; @@ -260,7 +410,8 @@ static int record_fetch (ZServerInfo *zi, int sysno, int score, 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; @@ -272,6 +423,8 @@ bend_fetchresult *bend_fetch (void *handle, bend_fetchrequest *q, int *num) int positions[2]; ZServerSetSysno *records; + register_lock (&server_info); + r.errstring = 0; r.last_in_set = 0; r.basename = "base"; @@ -285,23 +438,28 @@ bend_fetchresult *bend_fetch (void *handle, bend_fetchrequest *q, int *num) { 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; } @@ -310,6 +468,7 @@ 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; @@ -317,19 +476,28 @@ bend_scanresult *bend_scan (void *handle, bend_scanrequest *q, int *num) 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; }