diff options
Diffstat (limited to 'servers/lloadd/monitor.c')
| -rw-r--r-- | servers/lloadd/monitor.c | 1150 |
1 files changed, 1150 insertions, 0 deletions
diff --git a/servers/lloadd/monitor.c b/servers/lloadd/monitor.c new file mode 100644 index 0000000..d791648 --- /dev/null +++ b/servers/lloadd/monitor.c @@ -0,0 +1,1150 @@ +/* init.c - initialize various things */ +/* $OpenLDAP$ */ +/* This work is part of OpenLDAP Software <http://www.openldap.org/>. + * + * Copyright 1998-2022 The OpenLDAP Foundation. + * 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 the file LICENSE in the + * top-level directory of the distribution or, alternatively, at + * <http://www.OpenLDAP.org/license.html>. + */ +/* Portions Copyright (c) 1995 Regents of the University of Michigan. + * All rights reserved. + * + * Redistribution and use in source and binary forms are permitted + * provided that this notice is preserved and that due credit is given + * to the University of Michigan at Ann Arbor. The name of the University + * may not be used to endorse or promote products derived from this + * software without specific prior written permission. This software + * is provided ``as is'' without express or implied warranty. + */ + +#include "portable.h" + +#include <stdio.h> + +#include <ac/socket.h> +#include <ac/string.h> +#include <ac/time.h> + +#include "lload.h" +#include "lber_pvt.h" + +#include "ldap_rq.h" +#include "lload-config.h" +#include "../slapd/back-monitor/back-monitor.h" + +#define LLOAD_MONITOR_BALANCER_NAME "Load Balancer" +#define LLOAD_MONITOR_BALANCER_RDN \ + SLAPD_MONITOR_AT "=" LLOAD_MONITOR_BALANCER_NAME +#define LLOAD_MONITOR_BALANCER_DN \ + LLOAD_MONITOR_BALANCER_RDN "," SLAPD_MONITOR_BACKEND_DN + +#define LLOAD_MONITOR_INCOMING_NAME "Incoming Connections" +#define LLOAD_MONITOR_INCOMING_RDN \ + SLAPD_MONITOR_AT "=" LLOAD_MONITOR_INCOMING_NAME +#define LLOAD_MONITOR_INCOMING_DN \ + LLOAD_MONITOR_INCOMING_RDN "," LLOAD_MONITOR_BALANCER_DN + +#define LLOAD_MONITOR_OPERATIONS_NAME "Operations" +#define LLOAD_MONITOR_OPERATIONS_RDN \ + SLAPD_MONITOR_AT "=" LLOAD_MONITOR_OPERATIONS_NAME +#define LLOAD_MONITOR_OPERATIONS_DN \ + LLOAD_MONITOR_OPERATIONS_RDN "," LLOAD_MONITOR_BALANCER_DN + +#define LLOAD_MONITOR_BACKENDS_NAME "Backend Servers" +#define LLOAD_MONITOR_BACKENDS_RDN \ + SLAPD_MONITOR_AT "=" LLOAD_MONITOR_BACKENDS_NAME +#define LLOAD_MONITOR_BACKENDS_DN \ + LLOAD_MONITOR_BACKENDS_RDN "," LLOAD_MONITOR_BALANCER_DN + +struct lload_monitor_ops_t { + struct berval rdn; +} lload_monitor_op[] = { + { BER_BVC("cn=Bind") }, + { BER_BVC("cn=Other") }, + + { BER_BVNULL } +}; + +static ObjectClass *oc_olmBalancer; +static ObjectClass *oc_olmBalancerServer; +static ObjectClass *oc_olmBalancerConnection; +static ObjectClass *oc_olmBalancerOperation; + +static ObjectClass *oc_monitorContainer; +static ObjectClass *oc_monitorCounterObject; + +static AttributeDescription *ad_olmServerURI; +static AttributeDescription *ad_olmReceivedOps; +static AttributeDescription *ad_olmForwardedOps; +static AttributeDescription *ad_olmRejectedOps; +static AttributeDescription *ad_olmCompletedOps; +static AttributeDescription *ad_olmFailedOps; +static AttributeDescription *ad_olmConnectionType; +static AttributeDescription *ad_olmPendingOps; +static AttributeDescription *ad_olmPendingConnections; +static AttributeDescription *ad_olmActiveConnections; +static AttributeDescription *ad_olmIncomingConnections; +static AttributeDescription *ad_olmOutgoingConnections; + +static struct { + char *name; + char *oid; +} s_oid[] = { + { "olmBalancerAttributes", "olmModuleAttributes:1" }, + { "olmBalancerObjectClasses", "olmModuleObjectClasses:1" }, + + { NULL } +}; + +static struct { + char *desc; + AttributeDescription **ad; +} s_at[] = { + { "( olmBalancerAttributes:1 " + "NAME ( 'olmServerURI' ) " + "DESC 'URI of a backend server' " + "SYNTAX 1.3.6.1.4.1.1466.115.121.1.15 " + "EQUALITY caseIgnoreMatch " + "NO-USER-MODIFICATION " + "USAGE dSAOperation )", + &ad_olmServerURI }, + { "( olmBalancerAttributes:2 " + "NAME ( 'olmReceivedOps' ) " + "DESC 'monitor received operations' " + "SUP monitorCounter " + "NO-USER-MODIFICATION " + "USAGE dSAOperation )", + &ad_olmReceivedOps }, + { "( olmBalancerAttributes:3 " + "NAME ( 'olmForwardedOps' ) " + "DESC 'monitor forwarded operations' " + "SUP monitorCounter " + "NO-USER-MODIFICATION " + "USAGE dSAOperation )", + &ad_olmForwardedOps }, + { "( olmBalancerAttributes:4 " + "NAME ( 'olmRejectedOps' ) " + "DESC 'monitor rejected operations' " + "SUP monitorCounter " + "NO-USER-MODIFICATION " + "USAGE dSAOperation )", + &ad_olmRejectedOps }, + { "( olmBalancerAttributes:5 " + "NAME ( 'olmCompletedOps' ) " + "DESC 'monitor completed operations' " + "SUP monitorCounter " + "NO-USER-MODIFICATION " + "USAGE dSAOperation )", + &ad_olmCompletedOps }, + { "( olmBalancerAttributes:6 " + "NAME ( 'olmFailedOps' ) " + "DESC 'monitor failed operations' " + "SUP monitorCounter " + "NO-USER-MODIFICATION " + "USAGE dSAOperation )", + &ad_olmFailedOps }, + { "( olmBalancerAttributes:7 " + "NAME ( 'olmPendingOps' ) " + "DESC 'monitor number of pending operations' " + "EQUALITY integerMatch " + "SYNTAX 1.3.6.1.4.1.1466.115.121.1.27 " + "NO-USER-MODIFICATION " + "USAGE dSAOperation )", + &ad_olmPendingOps }, + { "( olmBalancerAttributes:8 " + "NAME ( 'olmPendingConnections' ) " + "DESC 'monitor number of pending connections' " + "EQUALITY integerMatch " + "SYNTAX 1.3.6.1.4.1.1466.115.121.1.27 " + "NO-USER-MODIFICATION " + "USAGE dSAOperation )", + &ad_olmPendingConnections }, + { "( olmBalancerAttributes:9 " + "NAME ( 'olmActiveConnections' ) " + "DESC 'monitor number of active connections' " + "EQUALITY integerMatch " + "SYNTAX 1.3.6.1.4.1.1466.115.121.1.27 " + "NO-USER-MODIFICATION " + "USAGE dSAOperation )", + &ad_olmActiveConnections }, + { "( olmBalancerAttributes:10 " + "NAME ( 'olmConnectionType' ) " + "DESC 'Connection type' " + "EQUALITY caseIgnoreMatch " + "SYNTAX 1.3.6.1.4.1.1466.115.121.1.15 " + "NO-USER-MODIFICATION " + "USAGE dSAOperation )", + &ad_olmConnectionType }, + { "( olmBalancerAttributes:11 " + "NAME ( 'olmIncomingConnections' ) " + "DESC 'monitor number of incoming connections' " + "EQUALITY integerMatch " + "SYNTAX 1.3.6.1.4.1.1466.115.121.1.27 " + "NO-USER-MODIFICATION " + "USAGE dSAOperation )", + &ad_olmIncomingConnections }, + { "( olmBalancerAttributes:12 " + "NAME ( 'olmOutgoingConnections' ) " + "DESC 'monitor number of active connections' " + "EQUALITY integerMatch " + "SYNTAX 1.3.6.1.4.1.1466.115.121.1.27 " + "NO-USER-MODIFICATION " + "USAGE dSAOperation )", + &ad_olmOutgoingConnections }, + + { NULL } +}; + +static struct { + char *name; + ObjectClass **oc; +} s_moc[] = { + { "monitorContainer", &oc_monitorContainer }, + { "monitorCounterObject", &oc_monitorCounterObject }, + + { NULL } +}; + +static struct { + char *desc; + ObjectClass **oc; +} s_oc[] = { + { "( olmBalancerObjectClasses:1 " + "NAME ( 'olmBalancer' ) " + "SUP top STRUCTURAL " + "MAY ( " + "olmIncomingConnections " + "$ olmOutgoingConnections " + ") )", + &oc_olmBalancer }, + { "( olmBalancerObjectClasses:2 " + "NAME ( 'olmBalancerServer' ) " + "SUP top STRUCTURAL " + "MAY ( " + "olmServerURI " + "$ olmActiveConnections " + "$ olmPendingConnections " + "$ olmPendingOps" + "$ olmReceivedOps " + "$ olmCompletedOps " + "$ olmFailedOps " + ") )", + &oc_olmBalancerServer }, + + { "( olmBalancerObjectClasses:3 " + "NAME ( 'olmBalancerOperation' ) " + "SUP top STRUCTURAL " + "MAY ( " + "olmReceivedOps " + "$ olmForwardedOps " + "$ olmRejectedOps " + "$ olmCompletedOps " + "$ olmFailedOps " + ") )", + &oc_olmBalancerOperation }, + { "( olmBalancerObjectClasses:4 " + "NAME ( 'olmBalancerConnection' ) " + "SUP top STRUCTURAL " + "MAY ( " + "olmConnectionType " + "$ olmPendingOps " + "$ olmReceivedOps " + "$ olmCompletedOps " + "$ olmFailedOps " + ") )", + &oc_olmBalancerConnection }, + { NULL } +}; + +static int +lload_monitor_subsystem_destroy( BackendDB *be, monitor_subsys_t *ms ) +{ + return LDAP_SUCCESS; +} + +static int +lload_monitor_backend_destroy( BackendDB *be, monitor_subsys_t *ms ) +{ + LloadBackend *b = ms->mss_private; + monitor_extra_t *mbe; + int rc = LDAP_SUCCESS; + + mbe = (monitor_extra_t *)be->bd_info->bi_extra; + if ( b->b_monitor ) { + ms->mss_destroy = lload_monitor_subsystem_destroy; + + assert( b->b_monitor == ms ); + b->b_monitor = NULL; + + rc = mbe->unregister_entry( &ms->mss_ndn ); + ber_memfree( ms->mss_dn.bv_val ); + ber_memfree( ms->mss_ndn.bv_val ); + } + + return rc; +} + +static void +lload_monitor_balancer_dispose( void **priv ) +{ + return; +} + +static int +lload_monitor_balancer_free( Entry *e, void **priv ) +{ + return LDAP_SUCCESS; +} + +static int +lload_monitor_balancer_update( + Operation *op, + SlapReply *rs, + Entry *e, + void *priv ) +{ + Attribute *a; + + a = attr_find( e->e_attrs, ad_olmIncomingConnections ); + assert( a != NULL ); + + UI2BV( &a->a_vals[0], lload_stats.global_incoming ); + + a = attr_find( e->e_attrs, ad_olmOutgoingConnections ); + assert( a != NULL ); + + UI2BV( &a->a_vals[0], lload_stats.global_outgoing ); + return SLAP_CB_CONTINUE; +} + +static int +lload_monitor_ops_update( Operation *op, SlapReply *rs, Entry *e, void *priv ) +{ + Attribute *a; + lload_counters_t *counters = (lload_counters_t *)priv; + + a = attr_find( e->e_attrs, ad_olmReceivedOps ); + assert( a != NULL ); + UI2BV( &a->a_vals[0], counters->lc_ops_received ); + + a = attr_find( e->e_attrs, ad_olmForwardedOps ); + assert( a != NULL ); + UI2BV( &a->a_vals[0], counters->lc_ops_forwarded ); + + a = attr_find( e->e_attrs, ad_olmRejectedOps ); + assert( a != NULL ); + UI2BV( &a->a_vals[0], counters->lc_ops_rejected ); + + a = attr_find( e->e_attrs, ad_olmCompletedOps ); + assert( a != NULL ); + UI2BV( &a->a_vals[0], counters->lc_ops_completed ); + + a = attr_find( e->e_attrs, ad_olmFailedOps ); + assert( a != NULL ); + UI2BV( &a->a_vals[0], counters->lc_ops_failed ); + + return SLAP_CB_CONTINUE; +} + +static void +lload_monitor_ops_dispose( void **priv ) +{ + return; +} + +static int +lload_monitor_ops_free( Entry *e, void **priv ) +{ + return LDAP_SUCCESS; +} + +static int +lload_monitor_balancer_init( BackendDB *be, monitor_subsys_t *ms ) +{ + monitor_extra_t *mbe; + Entry *e; + int rc; + monitor_callback_t *cb; + struct berval value = BER_BVC("0"); + + assert( be != NULL ); + + mbe = (monitor_extra_t *)be->bd_info->bi_extra; + + dnNormalize( 0, NULL, NULL, &ms->mss_dn, &ms->mss_ndn, NULL ); + + e = mbe->entry_stub( &ms->mss_dn, &ms->mss_ndn, &ms->mss_rdn, + oc_olmBalancer, NULL, NULL ); + if ( e == NULL ) { + Debug( LDAP_DEBUG_ANY, "lload_monitor_balancer_init: " + "unable to create entry \"%s,%s\"\n", + ms->mss_rdn.bv_val, ms->mss_ndn.bv_val ); + return -1; + } + + ch_free( ms->mss_ndn.bv_val ); + ber_dupbv( &ms->mss_dn, &e->e_name ); + ber_dupbv( &ms->mss_ndn, &e->e_nname ); + + cb = ch_calloc( sizeof(monitor_callback_t), 1 ); + cb->mc_update = lload_monitor_balancer_update; + cb->mc_free = lload_monitor_balancer_free; + cb->mc_dispose = lload_monitor_balancer_dispose; + cb->mc_private = NULL; + + attr_merge_normalize_one( e, ad_olmIncomingConnections, &value, NULL ); + attr_merge_normalize_one( e, ad_olmOutgoingConnections, &value, NULL ); + + rc = mbe->register_entry( e, cb, ms, 0 ); + if ( rc != LDAP_SUCCESS ) { + Debug( LDAP_DEBUG_ANY, "lload_monitor_balancer_init: " + "unable to register entry \"%s\" for monitoring\n", + e->e_name.bv_val ); + goto done; + } + +done: + entry_free( e ); + + return rc; +} + +static int +lload_monitor_ops_init( BackendDB *be, monitor_subsys_t *ms ) +{ + monitor_extra_t *mbe; + Entry *e, *parent; + int rc; + int i; + struct berval value = BER_BVC("0"); + + assert( be != NULL ); + + mbe = (monitor_extra_t *)be->bd_info->bi_extra; + + dnNormalize( 0, NULL, NULL, &ms->mss_dn, &ms->mss_ndn, NULL ); + ms->mss_destroy = lload_monitor_subsystem_destroy; + + parent = mbe->entry_stub( &ms->mss_dn, &ms->mss_ndn, &ms->mss_rdn, + oc_monitorContainer, NULL, NULL ); + if ( parent == NULL ) { + Debug( LDAP_DEBUG_ANY, "lload_monitor_ops_init: " + "unable to create entry \"%s,%s\"\n", + ms->mss_rdn.bv_val, ms->mss_ndn.bv_val ); + return -1; + } + ch_free( ms->mss_ndn.bv_val ); + ber_dupbv( &ms->mss_dn, &parent->e_name ); + ber_dupbv( &ms->mss_ndn, &parent->e_nname ); + + rc = mbe->register_entry( parent, NULL, ms, MONITOR_F_PERSISTENT_CH ); + if ( rc != LDAP_SUCCESS ) { + Debug( LDAP_DEBUG_ANY, "lload_monitor_ops_init: " + "unable to register entry \"%s\" for monitoring\n", + parent->e_name.bv_val ); + goto done; + } + + for ( i = 0; lload_monitor_op[i].rdn.bv_val != NULL; i++ ) { + monitor_callback_t *cb; + e = mbe->entry_stub( &parent->e_name, &parent->e_nname, + &lload_monitor_op[i].rdn, oc_olmBalancerOperation, NULL, NULL ); + if ( e == NULL ) { + Debug( LDAP_DEBUG_ANY, "lload_monitor_ops_init: " + "unable to create entry \"%s,%s\"\n", + lload_monitor_op[i].rdn.bv_val, parent->e_nname.bv_val ); + return -1; + } + + /* attr_merge_normalize_one( e, ad_olmDbOperations, &value, NULL ); */ + + /* + * We cannot share a single callback between entries. + * + * monitor_cache_destroy() tries to free all callbacks and it's called + * before mss_destroy() so we have no chance of handling it ourselves + */ + cb = ch_calloc( sizeof(monitor_callback_t), 1 ); + cb->mc_update = lload_monitor_ops_update; + cb->mc_free = lload_monitor_ops_free; + cb->mc_dispose = lload_monitor_ops_dispose; + cb->mc_private = &lload_stats.counters[i]; + + attr_merge_normalize_one( e, ad_olmReceivedOps, &value, NULL ); + attr_merge_normalize_one( e, ad_olmForwardedOps, &value, NULL ); + attr_merge_normalize_one( e, ad_olmRejectedOps, &value, NULL ); + attr_merge_normalize_one( e, ad_olmCompletedOps, &value, NULL ); + attr_merge_normalize_one( e, ad_olmFailedOps, &value, NULL ); + + rc = mbe->register_entry( e, cb, ms, 0 ); + + entry_free( e ); + + if ( rc != LDAP_SUCCESS ) { + Debug( LDAP_DEBUG_ANY, "lload_monitor_ops_init: " + "unable to register entry \"%s\" for monitoring\n", + e->e_name.bv_val ); + ch_free( cb ); + break; + } + } + +done: + entry_free( parent ); + return rc; +} + +static int +lload_monitor_in_conn_entry( LloadConnection *conn, void *argv ) +{ + Entry *e; + monitor_entry_t *mp; + struct lload_monitor_conn_arg *arg = argv; + monitor_extra_t *mbe = arg->op->o_bd->bd_info->bi_extra; + char buf[SLAP_TEXT_BUFLEN]; + struct berval bv; + + bv.bv_val = buf; + bv.bv_len = snprintf( + bv.bv_val, SLAP_TEXT_BUFLEN, "cn=Connection %lu", conn->c_connid ); + + e = mbe->entry_stub( &arg->ms->mss_dn, &arg->ms->mss_ndn, &bv, + oc_olmBalancerConnection, NULL, NULL ); + + mp = mbe->entrypriv_create(); + e->e_private = mp; + mp->mp_info = arg->ms; + mp->mp_flags = MONITOR_F_SUB | MONITOR_F_VOLATILE; + + *arg->ep = e; + arg->ep = &mp->mp_next; + + return 0; +} + +static int +lload_monitor_in_conn_create( + Operation *op, + SlapReply *rs, + struct berval *ndn, + Entry *e_parent, + Entry **ep ) +{ + monitor_entry_t *mp_parent; + struct lload_monitor_conn_arg arg = { + .op = op, + .ep = ep, + }; + + assert( e_parent->e_private != NULL ); + + mp_parent = e_parent->e_private; + arg.ms = (monitor_subsys_t *)mp_parent->mp_info; + + checked_lock( &clients_mutex ); + connections_walk( + &clients_mutex, &clients, lload_monitor_in_conn_entry, &arg ); + checked_unlock( &clients_mutex ); + + return 0; +} + +static int +lload_monitor_up_conn_entry( LloadConnection *c, void *argv ) +{ + Entry *e; + monitor_entry_t *mp; + struct lload_monitor_conn_arg *arg = argv; + monitor_extra_t *mbe = arg->op->o_bd->bd_info->bi_extra; + char buf[SLAP_TEXT_BUFLEN]; + struct berval bv_rdn, + bv_type = BER_BVNULL, + bv_pending = BER_BVNULL, + bv_received = BER_BVNULL, + bv_completed = BER_BVNULL, + bv_failed = BER_BVNULL; + + bv_rdn.bv_val = buf; + bv_rdn.bv_len = snprintf( + bv_rdn.bv_val, SLAP_TEXT_BUFLEN, "cn=Connection %lu", c->c_connid ); + + e = mbe->entry_stub( &arg->ms->mss_dn, &arg->ms->mss_ndn, &bv_rdn, + oc_olmBalancerConnection, NULL, NULL ); + + switch ( c->c_type ) { + case LLOAD_C_OPEN: { + struct berval bv = BER_BVC("regular"); + bv_type = bv; + } break; + case LLOAD_C_PREPARING: { + struct berval bv = BER_BVC("preparing"); + bv_type = bv; + } break; + case LLOAD_C_BIND: { + struct berval bv = BER_BVC("bind"); + bv_type = bv; + } break; + case LLOAD_C_PRIVILEGED: { + struct berval bv = BER_BVC("privileged"); + bv_type = bv; + } break; + default: { + struct berval bv = BER_BVC("unknown"); + bv_type = bv; + } break; + } + + UI2BV( &bv_pending, (long long unsigned int)c->c_n_ops_executing ); + UI2BV( &bv_received, c->c_counters.lc_ops_received ); + UI2BV( &bv_completed, c->c_counters.lc_ops_completed ); + UI2BV( &bv_failed, c->c_counters.lc_ops_failed ); + + attr_merge_normalize_one( e, ad_olmConnectionType, &bv_type, NULL ); + attr_merge_normalize_one( e, ad_olmPendingOps, &bv_pending, NULL ); + attr_merge_normalize_one( e, ad_olmReceivedOps, &bv_received, NULL ); + attr_merge_normalize_one( e, ad_olmCompletedOps, &bv_completed, NULL ); + attr_merge_normalize_one( e, ad_olmFailedOps, &bv_failed, NULL ); + + ch_free( bv_pending.bv_val ); + ch_free( bv_received.bv_val ); + ch_free( bv_completed.bv_val ); + ch_free( bv_failed.bv_val ); + mp = mbe->entrypriv_create(); + e->e_private = mp; + mp->mp_info = arg->ms; + mp->mp_flags = MONITOR_F_SUB | MONITOR_F_VOLATILE; + + *arg->ep = e; + arg->ep = &mp->mp_next; + + return 0; +} + +static int +lload_monitor_up_conn_create( + Operation *op, + SlapReply *rs, + struct berval *ndn, + Entry *e_parent, + Entry **ep ) +{ + monitor_entry_t *mp_parent; + monitor_subsys_t *ms; + LloadBackend *b; + struct lload_monitor_conn_arg arg = { + .op = op, + .ep = ep, + }; + + assert( e_parent->e_private != NULL ); + + mp_parent = e_parent->e_private; + ms = (monitor_subsys_t *)mp_parent->mp_info; + b = ms->mss_private; + + if ( !b ) { + return -1; + } + + arg.ms = ms; + + checked_lock( &b->b_mutex ); + connections_walk_last( &b->b_mutex, &b->b_conns, b->b_last_conn, + lload_monitor_up_conn_entry, &arg ); + + connections_walk_last( &b->b_mutex, &b->b_bindconns, b->b_last_bindconn, + lload_monitor_up_conn_entry, &arg ); + checked_unlock( &b->b_mutex ); + + return 0; +} + +int +lload_monitor_incoming_conn_init( BackendDB *be, monitor_subsys_t *ms ) +{ + monitor_extra_t *mbe; + Entry *e; + int rc; + + assert( be != NULL ); + mbe = (monitor_extra_t *)be->bd_info->bi_extra; + + ms->mss_create = lload_monitor_in_conn_create; + ms->mss_destroy = lload_monitor_subsystem_destroy; + + dnNormalize( 0, NULL, NULL, &ms->mss_dn, &ms->mss_ndn, NULL ); + + e = mbe->entry_stub( &ms->mss_dn, &ms->mss_ndn, &ms->mss_rdn, + oc_monitorContainer, NULL, NULL ); + if ( e == NULL ) { + Debug( LDAP_DEBUG_ANY, "lload_monitor_incoming_conn_init: " + "unable to create entry \"%s,%s\"\n", + ms->mss_rdn.bv_val, ms->mss_ndn.bv_val ); + return -1; + } + ch_free( ms->mss_ndn.bv_val ); + ber_dupbv( &ms->mss_dn, &e->e_name ); + ber_dupbv( &ms->mss_ndn, &e->e_nname ); + + rc = mbe->register_entry( e, NULL, ms, MONITOR_F_VOLATILE_CH ); + + if ( rc != LDAP_SUCCESS ) { + Debug( LDAP_DEBUG_ANY, "lload_monitor_incoming_conn_init: " + "unable to register entry \"%s\" for monitoring\n", + e->e_name.bv_val ); + goto done; + } +done: + entry_free( e ); + + return rc; +} + +static int +lload_monitor_server_update( + Operation *op, + SlapReply *rs, + Entry *e, + void *priv ) +{ + Attribute *a; + LloadBackend *b = priv; + LloadConnection *c; + LloadPendingConnection *pc; + ldap_pvt_mp_t active = 0, pending = 0, received = 0, completed = 0, + failed = 0; + int i; + + checked_lock( &b->b_mutex ); + active = b->b_active + b->b_bindavail; + + LDAP_CIRCLEQ_FOREACH ( c, &b->b_preparing, c_next ) { + pending++; + } + + LDAP_LIST_FOREACH( pc, &b->b_connecting, next ) { + pending++; + } + + for ( i = 0; i < LLOAD_STATS_OPS_LAST; i++ ) { + received += b->b_counters[i].lc_ops_received; + completed += b->b_counters[i].lc_ops_completed; + failed += b->b_counters[i].lc_ops_failed; + } + + a = attr_find( e->e_attrs, ad_olmPendingOps ); + assert( a != NULL ); + UI2BV( &a->a_vals[0], (long long unsigned int)b->b_n_ops_executing ); + + checked_unlock( &b->b_mutex ); + + /* Right now, there is no way to retrieve the entry from monitor's + * cache to replace URI at the moment it is modified */ + a = attr_find( e->e_attrs, ad_olmServerURI ); + assert( a != NULL ); + ber_bvreplace( &a->a_vals[0], &b->b_uri ); + + a = attr_find( e->e_attrs, ad_olmActiveConnections ); + assert( a != NULL ); + UI2BV( &a->a_vals[0], active ); + + a = attr_find( e->e_attrs, ad_olmPendingConnections ); + assert( a != NULL ); + UI2BV( &a->a_vals[0], pending ); + + a = attr_find( e->e_attrs, ad_olmReceivedOps ); + assert( a != NULL ); + UI2BV( &a->a_vals[0], received ); + + a = attr_find( e->e_attrs, ad_olmCompletedOps ); + assert( a != NULL ); + UI2BV( &a->a_vals[0], completed ); + + a = attr_find( e->e_attrs, ad_olmFailedOps ); + assert( a != NULL ); + UI2BV( &a->a_vals[0], failed ); + + return SLAP_CB_CONTINUE; +} + +static int +lload_monitor_backend_open( BackendDB *be, monitor_subsys_t *ms ) +{ + Entry *e; + struct berval value = BER_BVC("0"); + monitor_extra_t *mbe; + monitor_callback_t *cb; + LloadBackend *b = ms->mss_private; + int rc; + + assert( be != NULL ); + mbe = (monitor_extra_t *)be->bd_info->bi_extra; + + dnNormalize( 0, NULL, NULL, &ms->mss_dn, &ms->mss_ndn, NULL ); + e = mbe->entry_stub( &ms->mss_dn, &ms->mss_ndn, &ms->mss_rdn, + oc_olmBalancerServer, NULL, NULL ); + if ( e == NULL ) { + Debug( LDAP_DEBUG_ANY, "lload_monitor_backend_open: " + "unable to create entry \"%s,%s\"\n", + ms->mss_rdn.bv_val, ms->mss_ndn.bv_val ); + return -1; + } + + ch_free( ms->mss_ndn.bv_val ); + ber_dupbv( &ms->mss_dn, &e->e_name ); + ber_dupbv( &ms->mss_ndn, &e->e_nname ); + + cb = ch_calloc( sizeof(monitor_callback_t), 1 ); + cb->mc_update = lload_monitor_server_update; + cb->mc_free = NULL; + cb->mc_dispose = NULL; + cb->mc_private = b; + + attr_merge_normalize_one( e, ad_olmServerURI, &b->b_uri, NULL ); + attr_merge_normalize_one( e, ad_olmActiveConnections, &value, NULL ); + attr_merge_normalize_one( e, ad_olmPendingConnections, &value, NULL ); + attr_merge_normalize_one( e, ad_olmPendingOps, &value, NULL ); + attr_merge_normalize_one( e, ad_olmReceivedOps, &value, NULL ); + attr_merge_normalize_one( e, ad_olmCompletedOps, &value, NULL ); + attr_merge_normalize_one( e, ad_olmFailedOps, &value, NULL ); + + rc = mbe->register_entry( e, cb, ms, MONITOR_F_VOLATILE_CH ); + + if ( rc != LDAP_SUCCESS ) { + Debug( LDAP_DEBUG_ANY, "lload_monitor_backend_open: " + "unable to register entry \"%s\" for monitoring\n", + e->e_name.bv_val ); + goto done; + } + + b->b_monitor = ms; + ms->mss_destroy = lload_monitor_backend_destroy; + +done: + entry_free( e ); + return rc; +} + +int +lload_monitor_backend_init( BackendInfo *bi, LloadBackend *b ) +{ + monitor_extra_t *mbe; + monitor_subsys_t *bk_mss; + + mbe = (monitor_extra_t *)bi->bi_extra; + + /* FIXME: With back-monitor as it works now, there is no way to know when + * this can be safely freed so we leak it on shutdown */ + bk_mss = ch_calloc( 1, sizeof(monitor_subsys_t) ); + bk_mss->mss_rdn.bv_len = sizeof("cn=") + b->b_name.bv_len; + bk_mss->mss_rdn.bv_val = ch_malloc( bk_mss->mss_rdn.bv_len ); + bk_mss->mss_rdn.bv_len = snprintf( bk_mss->mss_rdn.bv_val, + bk_mss->mss_rdn.bv_len, "cn=%s", b->b_name.bv_val ); + + ber_str2bv( LLOAD_MONITOR_BACKENDS_DN, 0, 0, &bk_mss->mss_dn ); + bk_mss->mss_name = b->b_name.bv_val; + bk_mss->mss_flags = MONITOR_F_VOLATILE_CH; + bk_mss->mss_open = lload_monitor_backend_open; + bk_mss->mss_create = lload_monitor_up_conn_create; + bk_mss->mss_destroy = lload_monitor_subsystem_destroy; + bk_mss->mss_update = NULL; + bk_mss->mss_private = b; + + if ( mbe->register_subsys_late( bk_mss ) ) { + Debug( LDAP_DEBUG_ANY, "lload_monitor_backend_init: " + "failed to register backend %s\n", + bk_mss->mss_name ); + return -1; + } + return LDAP_SUCCESS; +} + +int +lload_monitor_backends_init( BackendDB *be, monitor_subsys_t *ms ) +{ + monitor_extra_t *mbe; + Entry *e; + int rc; + LloadBackend *b; + + assert( be != NULL ); + mbe = (monitor_extra_t *)be->bd_info->bi_extra; + + dnNormalize( 0, NULL, NULL, &ms->mss_dn, &ms->mss_ndn, NULL ); + + e = mbe->entry_stub( &ms->mss_dn, &ms->mss_ndn, &ms->mss_rdn, + oc_monitorContainer, NULL, NULL ); + if ( e == NULL ) { + Debug( LDAP_DEBUG_ANY, "lload_monitor_incoming_conn_init: " + "unable to create entry \"%s,%s\"\n", + ms->mss_rdn.bv_val, ms->mss_ndn.bv_val ); + return -1; + } + ch_free( ms->mss_ndn.bv_val ); + ber_dupbv( &ms->mss_dn, &e->e_name ); + ber_dupbv( &ms->mss_ndn, &e->e_nname ); + + rc = mbe->register_entry( e, NULL, ms, MONITOR_F_PERSISTENT_CH ); + + if ( rc != LDAP_SUCCESS ) { + Debug( LDAP_DEBUG_ANY, "lload_monitor_backends_init: " + "unable to register entry \"%s\" for monitoring\n", + e->e_name.bv_val ); + goto done; + } + + LDAP_CIRCLEQ_FOREACH ( b, &backend, b_next ) { + if ( (rc = lload_monitor_backend_init( be->bd_info, b )) ) { + break; + } + } +done: + entry_free( e ); + + return rc; +} + +static int +lload_monitor_incoming_count( LloadConnection *conn, void *argv ) +{ + lload_global_stats_t *tmp_stats = argv; + tmp_stats->global_incoming++; + return 0; +} + +/* + * Update all global statistics other than rejected and received, + * which are updated in real time + */ +void * +lload_monitor_update_global_stats( void *ctx, void *arg ) +{ + struct re_s *rtask = arg; + lload_global_stats_t tmp_stats = {}; + LloadBackend *b; + int i; + + Debug( LDAP_DEBUG_TRACE, "lload_monitor_update_global_stats: " + "updating stats\n" ); + + /* count incoming connections */ + checked_lock( &clients_mutex ); + connections_walk( &clients_mutex, &clients, lload_monitor_incoming_count, + &tmp_stats ); + checked_unlock( &clients_mutex ); + + LDAP_CIRCLEQ_FOREACH ( b, &backend, b_next ) { + checked_lock( &b->b_mutex ); + tmp_stats.global_outgoing += b->b_active + b->b_bindavail; + + /* merge completed and failed stats */ + for ( i = 0; i < LLOAD_STATS_OPS_LAST; i++ ) { + tmp_stats.counters[i].lc_ops_completed += + b->b_counters[i].lc_ops_completed; + tmp_stats.counters[i].lc_ops_failed += + b->b_counters[i].lc_ops_failed; + } + checked_unlock( &b->b_mutex ); + } + + /* update lload_stats */ + lload_stats.global_outgoing = tmp_stats.global_outgoing; + lload_stats.global_incoming = tmp_stats.global_incoming; + for ( i = 0; i < LLOAD_STATS_OPS_LAST; i++ ) { + lload_stats.counters[i].lc_ops_completed = + tmp_stats.counters[i].lc_ops_completed; + lload_stats.counters[i].lc_ops_failed = + tmp_stats.counters[i].lc_ops_failed; + } + + /* reschedule */ + checked_lock( &slapd_rq.rq_mutex ); + ldap_pvt_runqueue_stoptask( &slapd_rq, rtask ); + checked_unlock( &slapd_rq.rq_mutex ); + return NULL; +} + +static char *lload_subsys_rdn[] = { + LLOAD_MONITOR_BALANCER_RDN, + LLOAD_MONITOR_INCOMING_RDN, + LLOAD_MONITOR_OPERATIONS_RDN, + LLOAD_MONITOR_BACKENDS_RDN, + NULL +}; + +static struct monitor_subsys_t balancer_subsys[] = { + { + LLOAD_MONITOR_BALANCER_NAME, + BER_BVNULL, + BER_BVC(SLAPD_MONITOR_BACKEND_DN), + BER_BVNULL, + { BER_BVC("Load Balancer information"), + BER_BVNULL }, + MONITOR_F_PERSISTENT_CH, + lload_monitor_balancer_init, + lload_monitor_subsystem_destroy, /* destroy */ + NULL, /* update */ + NULL, /* create */ + NULL /* modify */ + }, + { + LLOAD_MONITOR_INCOMING_NAME, + BER_BVNULL, + BER_BVC(LLOAD_MONITOR_BALANCER_DN), + BER_BVNULL, + { BER_BVC("Load Balancer incoming connections"), + BER_BVNULL }, + MONITOR_F_VOLATILE_CH, + lload_monitor_incoming_conn_init, + lload_monitor_subsystem_destroy, /* destroy */ + NULL, /* update */ + NULL, /* create */ + NULL /* modify */ + }, + { + LLOAD_MONITOR_OPERATIONS_NAME, + BER_BVNULL, + BER_BVC(LLOAD_MONITOR_BALANCER_DN), + BER_BVNULL, + { BER_BVC("Load Balancer global operation statistics"), + BER_BVNULL }, + MONITOR_F_PERSISTENT_CH, + lload_monitor_ops_init, + lload_monitor_subsystem_destroy, /* destroy */ + NULL, /* update */ + NULL, /* create */ + NULL /* modify */ + }, + { + LLOAD_MONITOR_BACKENDS_NAME, + BER_BVNULL, + BER_BVC(LLOAD_MONITOR_BALANCER_DN), + BER_BVNULL, + { BER_BVC("Load Balancer Backends information"), + BER_BVNULL }, + MONITOR_F_PERSISTENT_CH, + lload_monitor_backends_init, + lload_monitor_subsystem_destroy, /* destroy */ + NULL, /* update */ + NULL, /* create */ + NULL /* modify */ + }, + { NULL } +}; + +int +lload_monitor_open( void ) +{ + static int lload_monitor_initialized_failure = 1; + static int lload_monitor_initialized = 0; + BackendInfo *mi; + monitor_extra_t *mbe; + monitor_subsys_t *mss; + ConfigArgs c; + char *argv[3], **rdn; + int i, rc; + + /* check if monitor is configured and usable */ + mi = backend_info( "monitor" ); + if ( !mi || !mi->bi_extra ) { + Debug( LDAP_DEBUG_CONFIG, "lload_monitor_open: " + "monitor backend not available, monitoring disabled\n" ); + return 0; + } + mbe = mi->bi_extra; + + /* don't bother if monitor is not configured */ + if ( !mbe->is_configured() ) { + static int warning = 0; + + if ( warning++ == 0 ) { + Debug( LDAP_DEBUG_CONFIG, "lload_monitor_open: " + "monitoring disabled; " + "configure monitor database to enable\n" ); + } + + return 0; + } + + if ( lload_monitor_initialized++ ) { + return lload_monitor_initialized_failure; + } + + argv[0] = "lload monitor"; + c.argv = argv; + c.argc = 3; + c.fname = argv[0]; + for ( i = 0; s_oid[i].name; i++ ) { + argv[1] = s_oid[i].name; + argv[2] = s_oid[i].oid; + + if ( parse_oidm( &c, 0, NULL ) != 0 ) { + Debug( LDAP_DEBUG_ANY, "lload_monitor_open: " + "unable to add objectIdentifier \"%s=%s\"\n", + s_oid[i].name, s_oid[i].oid ); + return 2; + } + } + + for ( i = 0; s_at[i].desc != NULL; i++ ) { + rc = register_at( s_at[i].desc, s_at[i].ad, 1 ); + if ( rc != LDAP_SUCCESS ) { + Debug( LDAP_DEBUG_ANY, "lload_monitor_open: " + "register_at failed for attributeType (%s)\n", + s_at[i].desc ); + return 3; + + } else { + (*s_at[i].ad)->ad_type->sat_flags |= SLAP_AT_HIDE; + } + } + + for ( i = 0; s_oc[i].desc != NULL; i++ ) { + rc = register_oc( s_oc[i].desc, s_oc[i].oc, 1 ); + if ( rc != LDAP_SUCCESS ) { + Debug( LDAP_DEBUG_ANY, "lload_monitor_open: " + "register_oc failed for objectClass (%s)\n", + s_oc[i].desc ); + return 4; + + } else { + (*s_oc[i].oc)->soc_flags |= SLAP_OC_HIDE; + } + } + + for ( i = 0; s_moc[i].name != NULL; i++ ) { + *s_moc[i].oc = oc_find( s_moc[i].name ); + if ( !*s_moc[i].oc ) { + Debug( LDAP_DEBUG_ANY, "lload_monitor_open: " + "failed to find objectClass (%s)\n", + s_moc[i].name ); + return 5; + } + } + + /* register the subsystems - Servers are registered in backends_init */ + for ( mss = balancer_subsys, rdn = lload_subsys_rdn; mss->mss_name; + mss++, rdn++ ) { + ber_str2bv( *rdn, 0, 1, &mss->mss_rdn ); + if ( mbe->register_subsys_late( mss ) ) { + Debug( LDAP_DEBUG_ANY, "lload_monitor_open: " + "failed to register %s subsystem\n", + mss->mss_name ); + return -1; + } + } + + checked_lock( &slapd_rq.rq_mutex ); + ldap_pvt_runqueue_insert( &slapd_rq, 1, lload_monitor_update_global_stats, + NULL, "lload_monitor_update_global_stats", "lloadd" ); + checked_unlock( &slapd_rq.rq_mutex ); + + return (lload_monitor_initialized_failure = LDAP_SUCCESS); +} |