1 /* $NetBSD: nextid.c,v 1.2 2021/08/14 16:15:02 christos Exp $ */
2
3 /* OpenLDAP WiredTiger backend */
4 /* $OpenLDAP$ */
5 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
6 *
7 * Copyright 2002-2021 The OpenLDAP Foundation.
8 * All rights reserved.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted only as authorized by the OpenLDAP
12 * Public License.
13 *
14 * A copy of this license is available in the file LICENSE in the
15 * top-level directory of the distribution or, alternatively, at
16 * <http://www.OpenLDAP.org/license.html>.
17 */
18 /* ACKNOWLEDGEMENTS:
19 * This work was developed by HAMANO Tsukasa <hamano@osstech.co.jp>
20 * based on back-bdb for inclusion in OpenLDAP Software.
21 * WiredTiger is a product of MongoDB Inc.
22 */
23
24 #include <sys/cdefs.h>
25 __RCSID("$NetBSD: nextid.c,v 1.2 2021/08/14 16:15:02 christos Exp $");
26
27 #include "portable.h"
28
29 #include <stdio.h>
30 #include <ac/string.h>
31 #include "back-wt.h"
32 #include "slap-config.h"
33
wt_next_id(BackendDB * be,ID * out)34 int wt_next_id(BackendDB *be, ID *out){
35 struct wt_info *wi = (struct wt_info *) be->be_private;
36 *out = __sync_add_and_fetch(&wi->wi_lastid, 1);
37 return 0;
38 }
39
wt_last_id(BackendDB * be,WT_SESSION * session,ID * out)40 int wt_last_id( BackendDB *be, WT_SESSION *session, ID *out )
41 {
42 WT_CURSOR *cursor;
43 int rc;
44 uint64_t id;
45
46 rc = session->open_cursor(session, WT_TABLE_ID2ENTRY, NULL, NULL, &cursor);
47 if(rc){
48 Debug( LDAP_DEBUG_ANY,
49 LDAP_XSTRING(wt_last_id)
50 ": open_cursor failed: %s (%d)\n",
51 wiredtiger_strerror(rc), rc );
52 return rc;
53 }
54
55 rc = cursor->prev(cursor);
56 switch(rc) {
57 case 0:
58 rc = cursor->get_key(cursor, &id);
59 if ( rc ) {
60 Debug( LDAP_DEBUG_ANY,
61 LDAP_XSTRING(wt_last_id)
62 ": get_key failed: %s (%d)\n",
63 wiredtiger_strerror(rc), rc );
64 return rc;
65 }
66 *out = id;
67 break;
68 case WT_NOTFOUND:
69 /* no entry */
70 *out = 0;
71 break;
72 default:
73 Debug( LDAP_DEBUG_ANY,
74 LDAP_XSTRING(wt_last_id)
75 ": prev failed: %s (%d)\n",
76 wiredtiger_strerror(rc), rc );
77 }
78
79 rc = cursor->close(cursor);
80 if ( rc ) {
81 Debug( LDAP_DEBUG_ANY,
82 LDAP_XSTRING(wt_last_id)
83 ": close failed: %s (%d)\n",
84 wiredtiger_strerror(rc), rc );
85 return rc;
86 }
87
88 return 0;
89 }
90
91 /*
92 * Local variables:
93 * indent-tabs-mode: t
94 * tab-width: 4
95 * c-basic-offset: 4
96 * End:
97 */
98