/* readw.c - deal with read waiters subsystem */
-/*
- * Copyright 1998-2003 The OpenLDAP Foundation, All Rights Reserved.
- * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 2001-2007 The OpenLDAP Foundation.
+ * Portions Copyright 2001-2003 Pierangelo Masarati.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
*/
-/*
- * Copyright 2001, Pierangelo Masarati, All rights reserved. <ando@sys-net.it>
- *
- * This work has beed deveolped for the OpenLDAP Foundation
- * in the hope that it may be useful to the Open Source community,
- * but WITHOUT ANY WARRANTY.
- *
- * Permission is granted to anyone to use this software for any purpose
- * on any computer system, and to alter it and redistribute it, subject
- * to the following restrictions:
- *
- * 1. The author and SysNet s.n.c. are not responsible for the consequences
- * of use of this software, no matter how awful, even if they arise from
- * flaws in it.
- *
- * 2. The origin of this software must not be misrepresented, either by
- * explicit claim or by omission. Since few users ever read sources,
- * credits should appear in the documentation.
- *
- * 3. Altered versions must be plainly marked as such, and must not be
- * misrepresented as being the original software. Since few users
- * ever read sources, credits should appear in the documentation.
- * SysNet s.n.c. cannot be responsible for the consequences of the
- * alterations.
- *
- * 4. This notice may not be removed or altered.
+/* ACKNOWLEDGEMENTS:
+ * This work was initially developed by Pierangelo Masarati for inclusion
+ * in OpenLDAP Software.
*/
#include "portable.h"
#include <stdio.h>
+#include <ac/string.h>
#include "slap.h"
+#include "lutil.h"
#include "back-monitor.h"
-static int monitor_subsys_readw_update_internal( struct monitorinfo *mi, Entry *e, int rw );
+static int
+monitor_subsys_rww_destroy(
+ BackendDB *be,
+ monitor_subsys_t *ms );
-int
-monitor_subsys_readw_update(
- struct monitorinfo *mi,
- Entry *e
-)
+static int
+monitor_subsys_rww_update(
+ Operation *op,
+ SlapReply *rs,
+ Entry *e );
+
+enum {
+ MONITOR_RWW_READ = 0,
+ MONITOR_RWW_WRITE,
+
+ MONITOR_RWW_LAST
+};
+
+static struct monitor_rww_t {
+ struct berval rdn;
+ struct berval nrdn;
+} monitor_rww[] = {
+ { BER_BVC("cn=Read"), BER_BVNULL },
+ { BER_BVC("cn=Write"), BER_BVNULL },
+ { BER_BVNULL, BER_BVNULL }
+};
+
+int
+monitor_subsys_rww_init(
+ BackendDB *be,
+ monitor_subsys_t *ms )
{
- return monitor_subsys_readw_update_internal( mi, e, 0 );
+ monitor_info_t *mi;
+
+ Entry **ep, *e_conn;
+ monitor_entry_t *mp;
+ int i;
+
+ assert( be != NULL );
+
+ ms->mss_destroy = monitor_subsys_rww_destroy;
+ ms->mss_update = monitor_subsys_rww_update;
+
+ mi = ( monitor_info_t * )be->be_private;
+
+ if ( monitor_cache_get( mi, &ms->mss_ndn, &e_conn ) ) {
+ Debug( LDAP_DEBUG_ANY,
+ "monitor_subsys_rww_init: "
+ "unable to get entry \"%s\"\n",
+ ms->mss_ndn.bv_val, 0, 0 );
+ return( -1 );
+ }
+
+ mp = ( monitor_entry_t * )e_conn->e_private;
+ mp->mp_children = NULL;
+ ep = &mp->mp_children;
+
+ for ( i = 0; i < MONITOR_RWW_LAST; i++ ) {
+ struct berval nrdn, bv;
+ Entry *e;
+
+ e = monitor_entry_stub( &ms->mss_dn, &ms->mss_ndn, &monitor_rww[i].rdn,
+ mi->mi_oc_monitorCounterObject, mi, NULL, NULL );
+ if ( e == NULL ) {
+ Debug( LDAP_DEBUG_ANY,
+ "monitor_subsys_rww_init: "
+ "unable to create entry \"cn=Read,%s\"\n",
+ ms->mss_ndn.bv_val, 0, 0 );
+ return( -1 );
+ }
+
+ /* steal normalized RDN */
+ dnRdn( &e->e_nname, &nrdn );
+ ber_dupbv( &monitor_rww[ i ].nrdn, &nrdn );
+
+ BER_BVSTR( &bv, "0" );
+ attr_merge_normalize_one( e, mi->mi_ad_monitorCounter, &bv, NULL );
+
+ mp = monitor_entrypriv_create();
+ if ( mp == NULL ) {
+ return -1;
+ }
+ e->e_private = ( void * )mp;
+ mp->mp_info = ms;
+ mp->mp_flags = ms->mss_flags \
+ | MONITOR_F_SUB | MONITOR_F_PERSISTENT;
+
+ if ( monitor_cache_add( mi, e ) ) {
+ Debug( LDAP_DEBUG_ANY,
+ "monitor_subsys_rww_init: "
+ "unable to add entry \"%s,%s\"\n",
+ monitor_rww[ i ].rdn.bv_val,
+ ms->mss_ndn.bv_val, 0 );
+ return( -1 );
+ }
+
+ *ep = e;
+ ep = &mp->mp_next;
+ }
+
+ monitor_cache_release( mi, e_conn );
+
+ return( 0 );
}
-int
-monitor_subsys_writew_update(
- struct monitorinfo *mi,
- Entry *e
-)
+static int
+monitor_subsys_rww_destroy(
+ BackendDB *be,
+ monitor_subsys_t *ms )
{
- return monitor_subsys_readw_update_internal( mi, e, 1 );
+ int i;
+
+ for ( i = 0; i < MONITOR_RWW_LAST; i++ ) {
+ ber_memfree_x( monitor_rww[ i ].nrdn.bv_val, NULL );
+ }
+
+ return 0;
}
-static int
-monitor_subsys_readw_update_internal(
- struct monitorinfo *mi,
- Entry *e,
- int rw
-)
+static int
+monitor_subsys_rww_update(
+ Operation *op,
+ SlapReply *rs,
+ Entry *e )
{
- Connection *c;
- int connindex;
- int nconns, nwritewaiters, nreadwaiters;
-
- Attribute *a;
- struct berval bv[2], *b = NULL;
- char buf[1024];
-
- char *str = NULL;
- int num = 0;
+ monitor_info_t *mi = (monitor_info_t *)op->o_bd->be_private;
+ Connection *c;
+ int connindex;
+ long nconns, nwritewaiters, nreadwaiters;
+
+ int i;
+ struct berval nrdn;
+
+ Attribute *a;
+ char buf[] = "+9223372036854775807L";
+ long num = 0;
+ ber_len_t len;
assert( mi != NULL );
assert( e != NULL );
-
- bv[1].bv_val = NULL;
-
+
+ dnRdn( &e->e_nname, &nrdn );
+
+ for ( i = 0; !BER_BVISNULL( &monitor_rww[ i ].nrdn ); i++ ) {
+ if ( dn_match( &nrdn, &monitor_rww[ i ].nrdn ) ) {
+ break;
+ }
+ }
+
+ if ( i == MONITOR_RWW_LAST ) {
+ return SLAP_CB_CONTINUE;
+ }
+
nconns = nwritewaiters = nreadwaiters = 0;
for ( c = connection_first( &connindex );
c != NULL;
- c = connection_next( c, &connindex ), nconns++ ) {
+ c = connection_next( c, &connindex ), nconns++ )
+ {
if ( c->c_writewaiter ) {
nwritewaiters++;
}
+
+ /* FIXME: ?!? */
if ( c->c_currentber != NULL ) {
nreadwaiters++;
}
}
connection_done(c);
- switch ( rw ) {
- case 0:
- str = "read waiters";
+ switch ( i ) {
+ case MONITOR_RWW_READ:
num = nreadwaiters;
break;
- case 1:
- str = "write waiters";
+
+ case MONITOR_RWW_WRITE:
num = nwritewaiters;
break;
+
+ default:
+ assert( 0 );
}
- snprintf( buf, sizeof( buf ), "%s=%d", str, num );
-
- if ( ( a = attr_find( e->e_attrs, monitor_ad_desc ) ) != NULL ) {
- for ( b = a->a_vals; b[0].bv_val != NULL; b++ ) {
- if ( strncmp( b[0].bv_val, str, strlen( str ) ) == 0 ) {
- free( b[0].bv_val );
- ber_str2bv( buf, 0, 1, b );
- break;
- }
+
+ snprintf( buf, sizeof( buf ), "%ld", num );
+
+ a = attr_find( e->e_attrs, mi->mi_ad_monitorCounter );
+ assert( a != NULL );
+ len = strlen( buf );
+ if ( len > a->a_vals[ 0 ].bv_len ) {
+ a->a_vals[ 0 ].bv_val = ber_memrealloc( a->a_vals[ 0 ].bv_val, len + 1 );
+ if ( BER_BVISNULL( &a->a_vals[ 0 ] ) ) {
+ BER_BVZERO( &a->a_vals[ 0 ] );
+ return SLAP_CB_CONTINUE;
}
}
+ AC_MEMCPY( a->a_vals[ 0 ].bv_val, buf, len + 1 );
+ a->a_vals[ 0 ].bv_len = len;
- if ( b == NULL || b[0].bv_val == NULL ) {
- bv[0].bv_val = buf;
- bv[0].bv_len = strlen( buf );
- attr_mergeit( e, monitor_ad_desc, bv );
- }
+ /* FIXME: touch modifyTimestamp? */
- return( 0 );
+ return SLAP_CB_CONTINUE;
}
projects / openldap / blobdiff