+/* ctxcsn.c -- back-bdb Context CSN Management Routines */
/* $OpenLDAP$ */
-/*
- * back-bdb Context CSN Management Routines
- */
-/* Copyright (c) 2003 by International Business Machines, Inc.
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 2003-2004 The OpenLDAP Foundation.
+ * Portions Copyright 2003 IBM Corporation.
+ * All rights reserved.
*
- * International Business Machines, Inc. (hereinafter called IBM) grants
- * permission under its copyrights to use, copy, modify, and distribute this
- * Software with or without fee, provided that the above copyright notice and
- * all paragraphs of this notice appear in all copies, and that the name of IBM
- * not be used in connection with the marketing of any product incorporating
- * the Software or modifications thereof, without specific, written prior
- * permission.
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
*
- * THE SOFTWARE IS PROVIDED "AS IS", AND IBM DISCLAIMS ALL WARRANTIES,
- * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
- * PARTICULAR PURPOSE. IN NO EVENT SHALL IBM BE LIABLE FOR ANY SPECIAL,
- * DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER ARISING
- * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE, EVEN
- * IF IBM IS APPRISED OF THE POSSIBILITY OF SUCH DAMAGES.
+ * A copy of this license is available in the file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
*/
#include "portable.h"
#include <ac/string.h>
#include <ac/time.h>
+#include "lutil.h"
#include "back-bdb.h"
#include "external.h"
)
{
struct bdb_info *bdb = (struct bdb_info *) op->o_bd->be_private;
- struct berval ctxcsn_rdn = { 0, NULL };
- struct berval ctxcsn_ndn = { 0, NULL };
+ struct berval ctxcsn_ndn = BER_BVNULL;
EntryInfo *ctxcsn_ei = NULL;
DB_LOCK ctxcsn_lock;
- struct berval *max_committed_csn = NULL;
+ struct berval max_committed_csn;
DB_LOCK suffix_lock;
int rc, ret;
ID ctxcsn_id;
Entry *e;
+ char textbuf[SLAP_TEXT_BUFLEN];
+ size_t textlen = sizeof textbuf;
+ EntryInfo *eip = NULL;
if ( ei ) {
e = ei->bei_e;
}
- ber_str2bv( "cn=ldapsync", strlen("cn=ldapsync"), 0, &ctxcsn_rdn );
- build_new_dn( &ctxcsn_ndn, &op->o_bd->be_nsuffix[0], &ctxcsn_rdn );
+ build_new_dn( &ctxcsn_ndn, &op->o_bd->be_nsuffix[0],
+ (struct berval *)&slap_ldapsync_cn_bv, op->o_tmpmemctx );
- rc = bdb_dn2entry( op, tid, &ctxcsn_ndn, &ctxcsn_ei,
- 0, locker, &ctxcsn_lock );
+ rc = bdb_dn2entry( op, tid, &ctxcsn_ndn, &ctxcsn_ei,
+ 1, locker, &ctxcsn_lock );
+
+ *ctxcsn_e = ctxcsn_ei->bei_e;
- if ( ctxcsn_ei ) {
- *ctxcsn_e = ctxcsn_ei->bei_e;
- bdb_cache_entry_db_relock( bdb->bi_dbenv, locker, ctxcsn_ei, 1, 0, &ctxcsn_lock );
- }
+ op->o_tmpfree( ctxcsn_ndn.bv_val, op->o_tmpmemctx );
- max_committed_csn = slap_get_commit_csn( op );
+ slap_get_commit_csn( op, &max_committed_csn );
- if ( max_committed_csn == NULL )
+ if ( max_committed_csn.bv_val == NULL ) {
return BDB_CSN_COMMIT;
+ }
*ctxcsn_added = 0;
if ( !*ctxcsn_e ) {
rs->sr_err = LDAP_OTHER;
rs->sr_text = "context csn not present";
- ber_bvfree( max_committed_csn );
+ ch_free( max_committed_csn.bv_val );
return BDB_CSN_ABORT;
} else {
- attr_delete( &(*ctxcsn_e)->e_attrs, slap_schema.si_ad_contextCSN );
- attr_merge_normalize_one( *ctxcsn_e, slap_schema.si_ad_contextCSN,
- max_committed_csn, NULL );
- ret = bdb_id2entry_update( op->o_bd, tid, *ctxcsn_e );
+ Modifications mod;
+ struct berval modvals[2];
+ Entry dummy;
+
+ modvals[0] = max_committed_csn;
+ modvals[1].bv_val = NULL;
+ modvals[1].bv_len = 0;
+
+ mod.sml_op = LDAP_MOD_REPLACE;
+ mod.sml_values = modvals;
+ mod.sml_nvalues = NULL;
+ mod.sml_desc = slap_schema.si_ad_contextCSN;
+ mod.sml_type = mod.sml_desc->ad_cname;
+ mod.sml_next = NULL;
+
+ dummy = **ctxcsn_e;
+ ret = bdb_modify_internal( op, tid, &mod, &dummy,
+ &rs->sr_text, textbuf, textlen );
+ ch_free( max_committed_csn.bv_val );
+ if ( ret != LDAP_SUCCESS ) {
+#ifdef NEW_LOGGING
+ LDAP_LOG ( OPERATION, ERR,
+ "bdb_csn_commit: modify failed (%d)\n", rs->sr_err, 0, 0 );
+#else
+ Debug( LDAP_DEBUG_TRACE,
+ "bdb_csn_commit: modify failed (%d)\n", rs->sr_err, 0, 0 );
+#endif
+ switch( ret ) {
+ case DB_LOCK_DEADLOCK:
+ case DB_LOCK_NOTGRANTED:
+ goto rewind;
+ default:
+ return BDB_CSN_ABORT;
+ }
+ }
+
+ ret = bdb_id2entry_update( op->o_bd, tid, &dummy );
switch ( ret ) {
case 0 :
break;
rs->sr_text = "context csn update failed";
return BDB_CSN_ABORT;
}
- ret = bdb_index_entry_add( op, tid, *ctxcsn_e );
- switch ( ret ) {
- case 0 :
- break;
- case DB_LOCK_DEADLOCK :
- case DB_LOCK_NOTGRANTED :
- goto rewind;
- default :
- rs->sr_err = LDAP_OTHER;
- rs->sr_text = "context csn indexing failed";
- return BDB_CSN_ABORT;
- }
+ bdb_cache_modify( *ctxcsn_e, dummy.e_attrs, bdb->bi_dbenv, locker, &ctxcsn_lock );
}
break;
case DB_NOTFOUND:
- if ( op->o_tag == LDAP_REQ_ADD && !be_issuffix( op->o_bd, &op->oq_add.rs_e->e_nname )) {
- rc = bdb_dn2entry( op, tid, &op->o_bd->be_nsuffix[0], suffix_ei,
- 0, locker, &suffix_lock );
- } else if ( op->o_tag != LDAP_REQ_ADD && !be_issuffix( op->o_bd, &e->e_nname )) {
- rc = bdb_dn2entry( op, tid, &op->o_bd->be_nsuffix[0], suffix_ei,
- 0, locker, &suffix_lock );
+ if ( op->o_tag == LDAP_REQ_ADD &&
+ be_issuffix( op->o_bd, &op->oq_add.rs_e->e_nname )) {
+ *suffix_ei = NULL;
+ eip = (EntryInfo *) ch_calloc( 1, sizeof( EntryInfo ));
+ eip->bei_id = op->oq_add.rs_e->e_id;
} else {
- *suffix_ei = ei;
+ eip = *suffix_ei = ctxcsn_ei;
}
/* This serializes add. But this case is very rare : only once. */
return BDB_CSN_ABORT;
}
- *ctxcsn_e = slap_create_context_csn_entry( op->o_bd, max_committed_csn );
- ber_bvfree( max_committed_csn );
+ *ctxcsn_e = slap_create_context_csn_entry( op->o_bd, &max_committed_csn );
+ ch_free( max_committed_csn.bv_val );
(*ctxcsn_e)->e_id = ctxcsn_id;
*ctxcsn_added = 1;
- ret = bdb_dn2id_add( op, tid, *suffix_ei, *ctxcsn_e );
+
+ ret = bdb_dn2id_add( op, tid, eip, *ctxcsn_e );
switch ( ret ) {
case 0 :
break;
goto rewind;
case DB_KEYEXIST :
rs->sr_err = LDAP_OTHER;
- rs->sr_text = "context csn exists before contex prefix does";
+ rs->sr_text = "context csn exists before context prefix does";
return BDB_CSN_ABORT;
default :
rs->sr_err = LDAP_OTHER;
rs->sr_text = "context csn store failed";
return BDB_CSN_ABORT;
}
+
+ if ( *suffix_ei == NULL ) {
+ ch_free( eip );
+ }
+
ret = bdb_id2entry_add( op->o_bd, tid, *ctxcsn_e );
switch ( ret ) {
case 0 :
break;
case DB_LOCK_DEADLOCK:
case DB_LOCK_NOTGRANTED:
+#ifdef NEW_LOGGING
+ LDAP_LOG( OPERATION, ERR,
+ "bdb_csn_commit : bdb_dn2entry retry\n", 0, 0, 0 );
+#else
+ Debug( LDAP_DEBUG_TRACE,
+ "bdb_csn_commit : bdb_dn2entry retry\n", 0, 0, 0 );
+#endif
goto rewind;
case LDAP_BUSY:
rs->sr_err = rc;
slap_rewind_commit_csn( op );
return BDB_CSN_RETRY;
}
+
+int
+bdb_get_commit_csn(
+ Operation *op,
+ SlapReply *rs,
+ struct berval **search_context_csn,
+ u_int32_t locker,
+ DB_LOCK *ctxcsn_lock
+)
+{
+ struct bdb_info *bdb = (struct bdb_info *) op->o_bd->be_private;
+ struct berval ctxcsn_ndn = BER_BVNULL;
+ struct berval csn = BER_BVNULL;
+ EntryInfo *ctxcsn_ei = NULL;
+ EntryInfo *suffix_ei = NULL;
+ Entry *ctxcsn_e = NULL;
+ DB_TXN *ltid = NULL;
+ Attribute *csn_a;
+ char gid[DB_XIDDATASIZE];
+ char csnbuf[ LDAP_LUTIL_CSNSTR_BUFSIZE ];
+ int num_retries = 0;
+ int ctxcsn_added = 0;
+ int rc;
+ struct sync_cookie syncCookie = { NULL, -1, NULL};
+ syncinfo_t *si;
+
+ if ( op->o_sync_mode != SLAP_SYNC_NONE &&
+ !LDAP_STAILQ_EMPTY( &op->o_bd->be_syncinfo )) {
+ char substr[67];
+ struct berval bv;
+
+ LDAP_STAILQ_FOREACH( si, &op->o_bd->be_syncinfo, si_next ) {
+ sprintf( substr, "cn=syncrepl%ld", si->si_rid );
+ ber_str2bv( substr, 0, 0, &bv );
+ build_new_dn( &ctxcsn_ndn, &op->o_bd->be_nsuffix[0], &bv, NULL );
+
+consumer_ctxcsn_retry :
+ rs->sr_err = bdb_dn2entry( op, NULL, &ctxcsn_ndn, &ctxcsn_ei,
+ 0, locker, ctxcsn_lock );
+ switch(rs->sr_err) {
+ case 0:
+ ch_free( ctxcsn_ndn.bv_val );
+ ctxcsn_ndn.bv_val = NULL;
+ if ( ctxcsn_ei ) {
+ ctxcsn_e = ctxcsn_ei->bei_e;
+ }
+ break;
+ case LDAP_BUSY:
+ ch_free( ctxcsn_ndn.bv_val );
+ LOCK_ID_FREE (bdb->bi_dbenv, locker );
+ return LDAP_BUSY;
+ case DB_LOCK_DEADLOCK:
+ case DB_LOCK_NOTGRANTED:
+ goto consumer_ctxcsn_retry;
+ case DB_NOTFOUND:
+ ch_free( ctxcsn_ndn.bv_val );
+ LOCK_ID_FREE( bdb->bi_dbenv, locker );
+ return LDAP_OTHER;
+ default:
+ ch_free( ctxcsn_ndn.bv_val );
+ ctxcsn_ndn.bv_val = NULL;
+ LOCK_ID_FREE (bdb->bi_dbenv, locker );
+ return LDAP_OTHER;
+ }
+
+ if ( ctxcsn_e ) {
+ csn_a = attr_find( ctxcsn_e->e_attrs,
+ slap_schema.si_ad_syncreplCookie );
+ if ( csn_a ) {
+ struct berval cookie;
+ const char *text;
+ int match = -1;
+ ber_dupbv( &cookie, &csn_a->a_vals[0] );
+ ber_bvarray_add( &syncCookie.octet_str, &cookie );
+ slap_parse_sync_cookie( &syncCookie );
+ if ( *search_context_csn &&
+ (*search_context_csn)->bv_val != NULL )
+ {
+ value_match( &match, slap_schema.si_ad_entryCSN,
+ slap_schema.si_ad_entryCSN->ad_type->sat_ordering,
+ SLAP_MR_VALUE_OF_ATTRIBUTE_SYNTAX,
+ syncCookie.ctxcsn, *search_context_csn, &text );
+ }
+ if ( match < 0 ) {
+ /* set search_context_csn to the
+ smallest syncrepl cookie value */
+ if ( *search_context_csn ) {
+ ch_free( (*search_context_csn)->bv_val );
+ ch_free( *search_context_csn );
+ }
+ *search_context_csn = ber_dupbv( NULL,
+ syncCookie.ctxcsn );
+ }
+ slap_sync_cookie_free( &syncCookie, 0 );
+ } else {
+ *search_context_csn = NULL;
+ }
+ } else {
+ *search_context_csn = NULL;
+ }
+ }
+ } else if ( op->o_sync_mode != SLAP_SYNC_NONE &&
+ LDAP_STAILQ_EMPTY( &op->o_bd->be_syncinfo )) {
+ build_new_dn( &ctxcsn_ndn, &op->o_bd->be_nsuffix[0],
+ (struct berval *)&slap_ldapsync_cn_bv, NULL );
+
+provider_ctxcsn_retry :
+ rs->sr_err = bdb_dn2entry( op, NULL, &ctxcsn_ndn, &ctxcsn_ei,
+ 0, locker, ctxcsn_lock );
+ switch(rs->sr_err) {
+ case 0:
+ ch_free( ctxcsn_ndn.bv_val );
+ if ( ctxcsn_ei ) {
+ ctxcsn_e = ctxcsn_ei->bei_e;
+ }
+ break;
+ case LDAP_BUSY:
+ ch_free( ctxcsn_ndn.bv_val );
+ LOCK_ID_FREE (bdb->bi_dbenv, locker );
+ return LDAP_BUSY;
+ case DB_LOCK_DEADLOCK:
+ case DB_LOCK_NOTGRANTED:
+ goto provider_ctxcsn_retry;
+ case DB_NOTFOUND:
+ snprintf( gid, sizeof( gid ), "%s-%08lx-%08lx",
+ bdb_uuid.bv_val, (long) op->o_connid, (long) op->o_opid );
+
+ slap_get_csn( op, csnbuf, sizeof(csnbuf), &csn, 1 );
+
+ if ( 0 ) {
+txn_retry:
+ rs->sr_err = TXN_ABORT( ltid );
+ if ( rs->sr_err != 0 ) {
+ rs->sr_err = LDAP_OTHER;
+ return rs->sr_err;
+ }
+ ldap_pvt_thread_yield();
+ bdb_trans_backoff( ++num_retries );
+ }
+ rs->sr_err = TXN_BEGIN( bdb->bi_dbenv, NULL,
+ <id, bdb->bi_db_opflags );
+ if ( rs->sr_err != 0 ) {
+ rs->sr_err = LDAP_OTHER;
+ return rs->sr_err;
+ }
+
+ rs->sr_err = bdb_csn_commit( op, rs, ltid, NULL, &suffix_ei,
+ &ctxcsn_e, &ctxcsn_added, locker );
+ switch( rs->sr_err ) {
+ case BDB_CSN_ABORT:
+ LOCK_ID_FREE( bdb->bi_dbenv, locker );
+ return LDAP_OTHER;
+ case BDB_CSN_RETRY:
+ goto txn_retry;
+ }
+
+ rs->sr_err = TXN_PREPARE( ltid, gid );
+ if ( rs->sr_err != 0 ) {
+ rs->sr_err = LDAP_OTHER;
+ return rs->sr_err;
+ }
+
+ bdb_cache_add( bdb, suffix_ei, ctxcsn_e,
+ (struct berval *)&slap_ldapsync_cn_bv, locker );
+
+ rs->sr_err = TXN_COMMIT( ltid, 0 );
+ if ( rs->sr_err != 0 ) {
+ rs->sr_err = LDAP_OTHER;
+ return rs->sr_err;
+ }
+
+ rs->sr_err = bdb_dn2entry( op, NULL, &ctxcsn_ndn, &ctxcsn_ei,
+ 0, locker, ctxcsn_lock );
+ ch_free( ctxcsn_ndn.bv_val );
+
+ if ( ctxcsn_ei ) {
+ ctxcsn_e = ctxcsn_ei->bei_e;
+ }
+ break;
+
+ default:
+ ch_free( ctxcsn_ndn.bv_val );
+ LOCK_ID_FREE (bdb->bi_dbenv, locker );
+ return LDAP_OTHER;
+ }
+
+ if ( ctxcsn_e ) {
+ csn_a = attr_find( ctxcsn_e->e_attrs,
+ slap_schema.si_ad_contextCSN );
+ if ( csn_a ) {
+ *search_context_csn = ber_dupbv( NULL, &csn_a->a_vals[0] );
+ } else {
+ *search_context_csn = NULL;
+ }
+ } else {
+ *search_context_csn = NULL;
+ }
+ }
+
+ return LDAP_SUCCESS;
+}
projects / openldap / blobdiff