/* syncprov.c - syncrepl provider */
/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
*
- * Copyright 2004-2008 The OpenLDAP Foundation.
+ * Copyright 2004-2011 The OpenLDAP Foundation.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
#include "config.h"
#include "ldap_rq.h"
+#ifdef LDAP_DEVEL
+#define CHECK_CSN 1
+#endif
+
/* A modify request on a particular entry */
typedef struct modinst {
struct modinst *mi_next;
/* A queued result of a persistent search */
typedef struct syncres {
struct syncres *s_next;
+ Entry *s_e;
struct berval s_dn;
struct berval s_ndn;
struct berval s_uuid;
#define PS_WROTE_BASE 0x04
#define PS_FIND_BASE 0x08
#define PS_FIX_FILTER 0x10
+#define PS_TASK_QUEUED 0x20
int s_inuse; /* reference count */
struct syncres *s_res;
struct syncres *s_restail;
- struct re_s *s_qtask; /* task for playing psearch responses */
-#define RUNQ_INTERVAL 36000 /* a long time */
ldap_pvt_thread_mutex_t s_mutex;
} syncops;
} slog_entry;
typedef struct sessionlog {
- struct berval sl_mincsn;
+ BerVarray sl_mincsn;
+ int *sl_sids;
+ int sl_numcsns;
int sl_num;
int sl_size;
slog_entry *sl_head;
/* The main state for this overlay */
typedef struct syncprov_info_t {
syncops *si_ops;
+ struct berval si_contextdn;
BerVarray si_ctxcsn; /* ldapsync context */
int *si_sids;
int si_numcsns;
int si_numops; /* number of ops since last checkpoint */
int si_nopres; /* Skip present phase */
int si_usehint; /* use reload hint */
+ int si_active; /* True if there are active mods */
+ int si_dirty; /* True if the context is dirty, i.e changes
+ * have been made without updating the csn. */
time_t si_chklast; /* time of last checkpoint */
Avlnode *si_mods; /* entries being modified */
sessionlog *si_logs;
ldap_pvt_thread_rdwr_t si_csn_rwlock;
ldap_pvt_thread_mutex_t si_ops_mutex;
ldap_pvt_thread_mutex_t si_mods_mutex;
+ ldap_pvt_thread_mutex_t si_resp_mutex;
} syncprov_info_t;
typedef struct opcookie {
slap_overinst *son;
syncmatches *smatches;
+ modtarget *smt;
+ Entry *se;
struct berval sdn; /* DN of entry, for deletes */
struct berval sndn;
struct berval suuid; /* UUID of entry */
struct berval sctxcsn;
- int sreference; /* Is the entry a reference? */
+ short osid; /* sid of op csn */
+ short rsid; /* sid of relay */
+ short sreference; /* Is the entry a reference? */
} opcookie;
+typedef struct mutexint {
+ ldap_pvt_thread_mutex_t mi_mutex;
+ int mi_int;
+} mutexint;
+
typedef struct fbase_cookie {
struct berval *fdn; /* DN of a modified entry, for scope testing */
syncops *fss; /* persistent search we're testing against */
if ( ret < 0 ) {
Debug( LDAP_DEBUG_TRACE,
- "slap_build_sync_ctrl: ber_flatten2 failed\n",
- 0, 0, 0 );
+ "slap_build_sync_ctrl: ber_flatten2 failed (%d)\n",
+ ret, 0, 0 );
send_ldap_error( op, rs, LDAP_OTHER, "internal error" );
- return ret;
+ return LDAP_OTHER;
}
return LDAP_SUCCESS;
if ( ret < 0 ) {
Debug( LDAP_DEBUG_TRACE,
- "syncprov_done_ctrl: ber_flatten2 failed\n",
- 0, 0, 0 );
+ "syncprov_done_ctrl: ber_flatten2 failed (%d)\n",
+ ret, 0, 0 );
send_ldap_error( op, rs, LDAP_OTHER, "internal error" );
- return ret;
+ return LDAP_OTHER;
}
return LDAP_SUCCESS;
if ( ret < 0 ) {
Debug( LDAP_DEBUG_TRACE,
- "syncprov_sendinfo: ber_flatten2 failed\n",
- 0, 0, 0 );
+ "syncprov_sendinfo: ber_flatten2 failed (%d)\n",
+ ret, 0, 0 );
send_ldap_error( op, rs, LDAP_OTHER, "internal error" );
- return ret;
+ return LDAP_OTHER;
}
rs->sr_rspoid = LDAP_SYNC_INFO;
}
static int
-syncprov_findcsn( Operation *op, find_csn_t mode )
+syncprov_findcsn( Operation *op, find_csn_t mode, struct berval *csn )
{
slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
syncprov_info_t *si = on->on_bi.bi_private;
slap_callback cb = {0};
Operation fop;
SlapReply frs = { REP_RESULT };
- char buf[LDAP_LUTIL_CSNSTR_BUFSIZE + STRLENOF("(entryCSN<=)")];
- char cbuf[LDAP_LUTIL_CSNSTR_BUFSIZE];
+ char buf[LDAP_PVT_CSNSTR_BUFSIZE + STRLENOF("(entryCSN<=)")];
+ char cbuf[LDAP_PVT_CSNSTR_BUFSIZE];
struct berval maxcsn;
Filter cf;
AttributeAssertion eq = ATTRIBUTEASSERTION_INIT;
cf.f_av_value = si->si_ctxcsn[maxid];
fop.ors_filterstr.bv_len = snprintf( buf, sizeof( buf ),
"(entryCSN>=%s)", cf.f_av_value.bv_val );
- if ( fop.ors_filterstr.bv_len < 0 || fop.ors_filterstr.bv_len >= sizeof( buf ) ) {
+ if ( fop.ors_filterstr.bv_len >= sizeof( buf ) ) {
return LDAP_OTHER;
}
fop.ors_attrsonly = 0;
break;
case FIND_CSN:
if ( BER_BVISEMPTY( &cf.f_av_value )) {
- cf.f_av_value = srs->sr_state.ctxcsn[0];
- /* If there are multiple CSNs, use the smallest */
- for ( i=1; i<srs->sr_state.numcsns; i++ ) {
- if ( ber_bvcmp( &cf.f_av_value, &srs->sr_state.ctxcsn[i] )
- > 0 ) {
- cf.f_av_value = srs->sr_state.ctxcsn[i];
- }
- }
+ cf.f_av_value = *csn;
}
+ fop.o_dn = op->o_bd->be_rootdn;
+ fop.o_ndn = op->o_bd->be_rootndn;
+ fop.o_req_dn = op->o_bd->be_suffix[0];
+ fop.o_req_ndn = op->o_bd->be_nsuffix[0];
/* Look for exact match the first time */
if ( findcsn_retry ) {
cf.f_choice = LDAP_FILTER_EQUALITY;
fop.ors_filterstr.bv_len = snprintf( buf, sizeof( buf ),
"(entryCSN<=%s)", cf.f_av_value.bv_val );
}
- if ( fop.ors_filterstr.bv_len < 0 || fop.ors_filterstr.bv_len >= sizeof( buf ) ) {
+ if ( fop.ors_filterstr.bv_len >= sizeof( buf ) ) {
return LDAP_OTHER;
}
fop.ors_attrsonly = 1;
switch( mode ) {
case FIND_MAXCSN:
if ( ber_bvcmp( &si->si_ctxcsn[maxid], &maxcsn )) {
+#ifdef CHECK_CSN
+ Syntax *syn = slap_schema.si_ad_contextCSN->ad_type->sat_syntax;
+ assert( !syn->ssyn_validate( syn, &maxcsn ));
+#endif
ber_bvreplace( &si->si_ctxcsn[maxid], &maxcsn );
si->si_numops++; /* ensure a checkpoint */
}
/* If we didn't find an exact match, then try for <= */
if ( findcsn_retry ) {
findcsn_retry = 0;
+ rs_reinit( &frs, REP_RESULT );
goto again;
}
rc = LDAP_NO_SUCH_OBJECT;
return rc;
}
+/* Should find a place to cache these */
+static mutexint *get_mutexint()
+{
+ mutexint *mi = ch_malloc( sizeof( mutexint ));
+ ldap_pvt_thread_mutex_init( &mi->mi_mutex );
+ mi->mi_int = 1;
+ return mi;
+}
+
+static void inc_mutexint( mutexint *mi )
+{
+ ldap_pvt_thread_mutex_lock( &mi->mi_mutex );
+ mi->mi_int++;
+ ldap_pvt_thread_mutex_unlock( &mi->mi_mutex );
+}
+
+/* return resulting counter */
+static int dec_mutexint( mutexint *mi )
+{
+ int i;
+ ldap_pvt_thread_mutex_lock( &mi->mi_mutex );
+ i = --mi->mi_int;
+ ldap_pvt_thread_mutex_unlock( &mi->mi_mutex );
+ if ( !i ) {
+ ldap_pvt_thread_mutex_destroy( &mi->mi_mutex );
+ ch_free( mi );
+ }
+ return i;
+}
+
static void
syncprov_free_syncop( syncops *so )
{
GroupAssertion *ga, *gnext;
ldap_pvt_thread_mutex_lock( &so->s_mutex );
- if ( --so->s_inuse > 0 ) {
+ /* already being freed, or still in use */
+ if ( !so->s_inuse || --so->s_inuse > 0 ) {
ldap_pvt_thread_mutex_unlock( &so->s_mutex );
return;
}
- if ( so->s_qtask ) {
- ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
- if ( ldap_pvt_runqueue_isrunning( &slapd_rq, so->s_qtask ) )
- ldap_pvt_runqueue_stoptask( &slapd_rq, so->s_qtask );
- ldap_pvt_runqueue_remove( &slapd_rq, so->s_qtask );
- ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
- }
ldap_pvt_thread_mutex_unlock( &so->s_mutex );
if ( so->s_flags & PS_IS_DETACHED ) {
filter_free( so->s_op->ors_filter );
ch_free( so->s_base.bv_val );
for ( sr=so->s_res; sr; sr=srnext ) {
srnext = sr->s_next;
+ if ( sr->s_e ) {
+ if ( !dec_mutexint( sr->s_e->e_private )) {
+ sr->s_e->e_private = NULL;
+ entry_free( sr->s_e );
+ }
+ }
ch_free( sr );
}
ldap_pvt_thread_mutex_destroy( &so->s_mutex );
/* Send a persistent search response */
static int
-syncprov_sendresp( Operation *op, opcookie *opc, syncops *so,
- Entry **e, int mode )
+syncprov_sendresp( Operation *op, opcookie *opc, syncops *so, int mode )
{
- slap_overinst *on = opc->son;
-
SlapReply rs = { REP_SEARCH };
LDAPControl *ctrls[2];
- struct berval cookie, csns[2];
+ struct berval cookie = BER_BVNULL, csns[2];
Entry e_uuid = {0};
Attribute a_uuid = {0};
return SLAPD_ABANDON;
ctrls[1] = NULL;
- csns[0] = opc->sctxcsn;
- BER_BVZERO( &csns[1] );
- slap_compose_sync_cookie( op, &cookie, csns, so->s_rid, so->s_sid );
+ if ( !BER_BVISNULL( &opc->sctxcsn )) {
+ csns[0] = opc->sctxcsn;
+ BER_BVZERO( &csns[1] );
+ slap_compose_sync_cookie( op, &cookie, csns, so->s_rid, slap_serverID ? slap_serverID : -1 );
+ }
- Debug( LDAP_DEBUG_SYNC, "syncprov_sendresp: cookie=%s\n", cookie.bv_val, 0, 0 );
+#ifdef LDAP_DEBUG
+ if ( so->s_sid > 0 ) {
+ Debug( LDAP_DEBUG_SYNC, "syncprov_sendresp: to=%03x, cookie=%s\n",
+ so->s_sid, cookie.bv_val ? cookie.bv_val : "", 0 );
+ } else {
+ Debug( LDAP_DEBUG_SYNC, "syncprov_sendresp: cookie=%s\n",
+ cookie.bv_val ? cookie.bv_val : "", 0, 0 );
+ }
+#endif
e_uuid.e_attrs = &a_uuid;
a_uuid.a_desc = slap_schema.si_ad_entryUUID;
a_uuid.a_nvals = &opc->suuid;
rs.sr_err = syncprov_state_ctrl( op, &rs, &e_uuid,
mode, ctrls, 0, 1, &cookie );
- op->o_tmpfree( cookie.bv_val, op->o_tmpmemctx );
+ if ( !BER_BVISNULL( &cookie )) {
+ op->o_tmpfree( cookie.bv_val, op->o_tmpmemctx );
+ }
rs.sr_ctrls = ctrls;
- op->o_bd->bd_info = (BackendInfo *)on->on_info;
+ rs.sr_entry = &e_uuid;
+ if ( mode == LDAP_SYNC_ADD || mode == LDAP_SYNC_MODIFY ) {
+ e_uuid = *opc->se;
+ e_uuid.e_private = NULL;
+ }
+
switch( mode ) {
case LDAP_SYNC_ADD:
- rs.sr_entry = *e;
- if ( rs.sr_entry->e_private )
- rs.sr_flags = REP_ENTRY_MUSTRELEASE;
- if ( opc->sreference ) {
+ if ( opc->sreference && so->s_op->o_managedsait <= SLAP_CONTROL_IGNORED ) {
rs.sr_ref = get_entry_referrals( op, rs.sr_entry );
rs.sr_err = send_search_reference( op, &rs );
ber_bvarray_free( rs.sr_ref );
- if ( !rs.sr_entry )
- *e = NULL;
break;
}
/* fallthru */
case LDAP_SYNC_MODIFY:
- rs.sr_entry = *e;
- if ( rs.sr_entry->e_private )
- rs.sr_flags = REP_ENTRY_MUSTRELEASE;
rs.sr_attrs = op->ors_attrs;
rs.sr_err = send_search_entry( op, &rs );
- if ( !rs.sr_entry )
- *e = NULL;
break;
case LDAP_SYNC_DELETE:
e_uuid.e_attrs = NULL;
e_uuid.e_name = opc->sdn;
e_uuid.e_nname = opc->sndn;
- rs.sr_entry = &e_uuid;
- if ( opc->sreference ) {
+ if ( opc->sreference && so->s_op->o_managedsait <= SLAP_CONTROL_IGNORED ) {
struct berval bv = BER_BVNULL;
rs.sr_ref = &bv;
rs.sr_err = send_search_reference( op, &rs );
}
/* In case someone else freed it already? */
if ( rs.sr_ctrls ) {
- op->o_tmpfree( rs.sr_ctrls[0], op->o_tmpmemctx );
+ int i;
+ for ( i=0; rs.sr_ctrls[i]; i++ ) {
+ if ( rs.sr_ctrls[i] == ctrls[0] ) {
+ op->o_tmpfree( ctrls[0]->ldctl_value.bv_val, op->o_tmpmemctx );
+ ctrls[0]->ldctl_value.bv_val = NULL;
+ break;
+ }
+ }
rs.sr_ctrls = NULL;
}
return rs.sr_err;
}
+static void
+syncprov_qstart( syncops *so );
+
/* Play back queued responses */
static int
-syncprov_qplay( Operation *op, struct re_s *rtask )
+syncprov_qplay( Operation *op, syncops *so )
{
- syncops *so = rtask->arg;
slap_overinst *on = LDAP_SLIST_FIRST(&so->s_op->o_extra)->oe_key;
syncres *sr;
- Entry *e;
opcookie opc;
int rc = 0;
opc.son = on;
- for (;;) {
+ do {
ldap_pvt_thread_mutex_lock( &so->s_mutex );
sr = so->s_res;
if ( sr )
break;
ldap_pvt_thread_mutex_unlock( &so->s_mutex );
- opc.sdn = sr->s_dn;
- opc.sndn = sr->s_ndn;
- opc.suuid = sr->s_uuid;
- opc.sctxcsn = sr->s_csn;
- opc.sreference = sr->s_isreference;
- e = NULL;
-
- if ( sr->s_mode != LDAP_SYNC_DELETE ) {
- rc = overlay_entry_get_ov( op, &opc.sndn, NULL, NULL, 0, &e, on );
- if ( rc ) {
- Debug( LDAP_DEBUG_SYNC, "syncprov_qplay: failed to get %s, "
- "error (%d), ignoring...\n", opc.sndn.bv_val, rc, 0 );
- ch_free( sr );
- rc = 0;
- continue;
- }
- }
- rc = syncprov_sendresp( op, &opc, so, &e, sr->s_mode );
+ if ( sr->s_mode == LDAP_SYNC_NEW_COOKIE ) {
+ SlapReply rs = { REP_INTERMEDIATE };
- if ( e ) {
- overlay_entry_release_ov( op, e, 0, on );
+ rc = syncprov_sendinfo( op, &rs, LDAP_TAG_SYNC_NEW_COOKIE,
+ &sr->s_csn, 0, NULL, 0 );
+ } else {
+ opc.sdn = sr->s_dn;
+ opc.sndn = sr->s_ndn;
+ opc.suuid = sr->s_uuid;
+ opc.sctxcsn = sr->s_csn;
+ opc.sreference = sr->s_isreference;
+ opc.se = sr->s_e;
+
+ rc = syncprov_sendresp( op, &opc, so, sr->s_mode );
+
+ }
+ if ( sr->s_e ) {
+ if ( !dec_mutexint( sr->s_e->e_private )) {
+ sr->s_e->e_private = NULL;
+ entry_free ( sr->s_e );
+ }
}
ch_free( sr );
- if ( rc ) {
- /* Exit loop with mutex held */
- ldap_pvt_thread_mutex_lock( &so->s_mutex );
- break;
- }
- }
+ /* Exit loop with mutex held */
+ ldap_pvt_thread_mutex_lock( &so->s_mutex );
- /* wait until we get explicitly scheduled again */
- ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
- ldap_pvt_runqueue_stoptask( &slapd_rq, rtask );
- if ( rc == 0 ) {
- ldap_pvt_runqueue_resched( &slapd_rq, rtask, 1 );
+ } while (0);
+
+ /* We now only send one change at a time, to prevent one
+ * psearch from hogging all the CPU. Resubmit this task if
+ * there are more responses queued and no errors occurred.
+ */
+
+ if ( rc == 0 && so->s_res ) {
+ syncprov_qstart( so );
} else {
- /* bail out on any error */
- ldap_pvt_runqueue_remove( &slapd_rq, rtask );
+ so->s_flags ^= PS_TASK_QUEUED;
}
- ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
+
ldap_pvt_thread_mutex_unlock( &so->s_mutex );
return rc;
}
-/* runqueue task for playing back queued responses */
+/* task for playing back queued responses */
static void *
syncprov_qtask( void *ctx, void *arg )
{
- struct re_s *rtask = arg;
- syncops *so = rtask->arg;
+ syncops *so = arg;
OperationBuffer opbuf;
Operation *op;
BackendDB be;
LDAP_SLIST_FIRST(&op->o_extra) = NULL;
op->o_callback = NULL;
- rc = syncprov_qplay( op, rtask );
+ rc = syncprov_qplay( op, so );
/* decrement use count... */
syncprov_free_syncop( so );
-#if 0 /* FIXME: connection_close isn't exported from slapd.
- * should it be?
- */
- if ( rc ) {
- ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
- if ( connection_state_closing( op->o_conn )) {
- connection_close( op->o_conn );
- }
- ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
- }
-#endif
return NULL;
}
static void
syncprov_qstart( syncops *so )
{
- int wake=0;
- ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
- if ( !so->s_qtask ) {
- so->s_qtask = ldap_pvt_runqueue_insert( &slapd_rq, RUNQ_INTERVAL,
- syncprov_qtask, so, "syncprov_qtask",
- so->s_op->o_conn->c_peer_name.bv_val );
- ++so->s_inuse;
- wake = 1;
- } else {
- if (!ldap_pvt_runqueue_isrunning( &slapd_rq, so->s_qtask ) &&
- !so->s_qtask->next_sched.tv_sec ) {
- so->s_qtask->interval.tv_sec = 0;
- ldap_pvt_runqueue_resched( &slapd_rq, so->s_qtask, 0 );
- so->s_qtask->interval.tv_sec = RUNQ_INTERVAL;
- ++so->s_inuse;
- wake = 1;
- }
- }
- ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
- if ( wake )
- slap_wake_listener();
+ so->s_flags |= PS_TASK_QUEUED;
+ so->s_inuse++;
+ ldap_pvt_thread_pool_submit( &connection_pool,
+ syncprov_qtask, so );
}
/* Queue a persistent search response */
syncprov_qresp( opcookie *opc, syncops *so, int mode )
{
syncres *sr;
- int sid, srsize;
+ int srsize;
+ struct berval cookie = opc->sctxcsn;
- /* Don't send changes back to their originator */
- sid = slap_parse_csn_sid( &opc->sctxcsn );
- if ( sid >= 0 && sid == so->s_sid )
- return LDAP_SUCCESS;
+ if ( mode == LDAP_SYNC_NEW_COOKIE ) {
+ syncprov_info_t *si = opc->son->on_bi.bi_private;
+
+ slap_compose_sync_cookie( NULL, &cookie, si->si_ctxcsn,
+ so->s_rid, slap_serverID ? slap_serverID : -1);
+ }
srsize = sizeof(syncres) + opc->suuid.bv_len + 1 +
opc->sdn.bv_len + 1 + opc->sndn.bv_len + 1;
- if ( opc->sctxcsn.bv_len )
- srsize += opc->sctxcsn.bv_len + 1;
+ if ( cookie.bv_len )
+ srsize += cookie.bv_len + 1;
sr = ch_malloc( srsize );
sr->s_next = NULL;
+ sr->s_e = opc->se;
+ /* bump refcount on this entry */
+ if ( opc->se )
+ inc_mutexint( opc->se->e_private );
sr->s_dn.bv_val = (char *)(sr + 1);
sr->s_dn.bv_len = opc->sdn.bv_len;
sr->s_mode = mode;
opc->sndn.bv_val ) + 1;
sr->s_uuid.bv_len = opc->suuid.bv_len;
AC_MEMCPY( sr->s_uuid.bv_val, opc->suuid.bv_val, opc->suuid.bv_len );
- if ( opc->sctxcsn.bv_len ) {
+ if ( cookie.bv_len ) {
sr->s_csn.bv_val = sr->s_uuid.bv_val + sr->s_uuid.bv_len + 1;
- strcpy( sr->s_csn.bv_val, opc->sctxcsn.bv_val );
+ strcpy( sr->s_csn.bv_val, cookie.bv_val );
} else {
sr->s_csn.bv_val = NULL;
}
- sr->s_csn.bv_len = opc->sctxcsn.bv_len;
+ sr->s_csn.bv_len = cookie.bv_len;
+
+ if ( mode == LDAP_SYNC_NEW_COOKIE && cookie.bv_val ) {
+ ch_free( cookie.bv_val );
+ }
ldap_pvt_thread_mutex_lock( &so->s_mutex );
if ( !so->s_res ) {
so->s_flags ^= PS_WROTE_BASE;
so->s_flags |= PS_FIND_BASE;
}
- if ( so->s_flags & PS_IS_DETACHED ) {
+ if (( so->s_flags & (PS_IS_DETACHED|PS_TASK_QUEUED)) == PS_IS_DETACHED ) {
syncprov_qstart( so );
}
ldap_pvt_thread_mutex_unlock( &so->s_mutex );
rc = overlay_entry_get_ov( op, fc.fdn, NULL, NULL, 0, &e, on );
/* If we're sending responses now, make a copy and unlock the DB */
if ( e && !saveit ) {
- Entry *e2 = entry_dup( e );
+ if ( !opc->se ) {
+ opc->se = entry_dup( e );
+ opc->se->e_private = get_mutexint();
+ }
overlay_entry_release_ov( op, e, 0, on );
- e = e2;
+ e = opc->se;
}
if ( rc ) {
op->o_bd = b0;
}
} else {
e = op->ora_e;
+ if ( !saveit ) {
+ if ( !opc->se ) {
+ opc->se = entry_dup( e );
+ opc->se->e_private = get_mutexint();
+ }
+ e = opc->se;
+ }
}
if ( saveit || op->o_tag == LDAP_REQ_ADD ) {
if ( ss->s_op->o_abandon )
continue;
+ /* Don't send ops back to the originator */
+ if ( opc->osid > 0 && opc->osid == ss->s_sid ) {
+ Debug( LDAP_DEBUG_SYNC, "syncprov_matchops: skipping original sid %03x\n",
+ opc->osid, 0, 0 );
+ continue;
+ }
+
+ /* Don't send ops back to the messenger */
+ if ( opc->rsid > 0 && opc->rsid == ss->s_sid ) {
+ Debug( LDAP_DEBUG_SYNC, "syncprov_matchops: skipping relayed sid %03x\n",
+ opc->rsid, 0, 0 );
+ continue;
+ }
+
/* validate base */
fc.fss = ss;
fc.fbase = 0;
continue;
}
-
/* If we're sending results now, look for this op in old matches */
if ( !saveit ) {
syncmatches *old;
}
if ( fc.fscope ) {
+ ldap_pvt_thread_mutex_lock( &ss->s_mutex );
op2 = *ss->s_op;
oh = *op->o_hdr;
oh.oh_conn = ss->s_op->o_conn;
oh.oh_connid = ss->s_op->o_connid;
+ op2.o_bd = op->o_bd->bd_self;
op2.o_hdr = &oh;
op2.o_extra = op->o_extra;
+ op2.o_callback = NULL;
+ if (ss->s_flags & PS_FIX_FILTER) {
+ /* Skip the AND/GE clause that we stuck on in front. We
+ would lose deletes/mods that happen during the refresh
+ phase otherwise (ITS#6555) */
+ op2.ors_filter = ss->s_op->ors_filter->f_and->f_next;
+ }
+ ldap_pvt_thread_mutex_unlock( &ss->s_mutex );
+ rc = test_filter( &op2, e, op2.ors_filter );
}
+ Debug( LDAP_DEBUG_TRACE, "syncprov_matchops: sid %03x fscope %d rc %d\n",
+ ss->s_sid, fc.fscope, rc );
+
/* check if current o_req_dn is in scope and matches filter */
- if ( fc.fscope && test_filter( &op2, e, ss->s_op->ors_filter ) ==
- LDAP_COMPARE_TRUE ) {
+ if ( fc.fscope && rc == LDAP_COMPARE_TRUE ) {
if ( saveit ) {
sm = op->o_tmpalloc( sizeof(syncmatches), op->o_tmpmemctx );
sm->sm_next = opc->smatches;
} else if ( !saveit && found ) {
/* send DELETE */
syncprov_qresp( opc, ss, LDAP_SYNC_DELETE );
+ } else if ( !saveit ) {
+ syncprov_qresp( opc, ss, LDAP_SYNC_NEW_COOKIE );
+ }
+ if ( !saveit && found ) {
+ /* Decrement s_inuse, was incremented when called
+ * with saveit == TRUE
+ */
+ syncprov_free_syncop( ss );
}
}
ldap_pvt_thread_mutex_unlock( &si->si_ops_mutex );
if ( !SLAP_ISOVERLAY( op->o_bd )) {
op->o_bd = &db;
}
- overlay_entry_release_ov( op, e, 0, on );
+ if ( saveit )
+ overlay_entry_release_ov( op, e, 0, on );
op->o_bd = b0;
}
+ if ( opc->se && !saveit ) {
+ if ( !dec_mutexint( opc->se->e_private )) {
+ opc->se->e_private = NULL;
+ entry_free( opc->se );
+ opc->se = NULL;
+ }
+ }
if ( freefdn ) {
op->o_tmpfree( fc.fdn->bv_val, op->o_tmpmemctx );
}
slap_overinst *on = opc->son;
syncprov_info_t *si = on->on_bi.bi_private;
syncmatches *sm, *snext;
- modtarget *mt, mtdummy;
+ modtarget *mt;
+
+ ldap_pvt_thread_mutex_lock( &si->si_ops_mutex );
+ if ( si->si_active )
+ si->si_active--;
+ ldap_pvt_thread_mutex_unlock( &si->si_ops_mutex );
for (sm = opc->smatches; sm; sm=snext) {
snext = sm->sm_next;
}
/* Remove op from lock table */
- mtdummy.mt_op = op;
- ldap_pvt_thread_mutex_lock( &si->si_mods_mutex );
- mt = avl_find( si->si_mods, &mtdummy, sp_avl_cmp );
+ mt = opc->smt;
if ( mt ) {
- modinst *mi = mt->mt_mods;
-
- /* If there are more, promote the next one */
ldap_pvt_thread_mutex_lock( &mt->mt_mutex );
- if ( mi->mi_next ) {
- mt->mt_mods = mi->mi_next;
+ mt->mt_mods = mt->mt_mods->mi_next;
+ /* If there are more, promote the next one */
+ if ( mt->mt_mods ) {
mt->mt_op = mt->mt_mods->mi_op;
ldap_pvt_thread_mutex_unlock( &mt->mt_mutex );
} else {
- avl_delete( &si->si_mods, mt, sp_avl_cmp );
ldap_pvt_thread_mutex_unlock( &mt->mt_mutex );
+ ldap_pvt_thread_mutex_lock( &si->si_mods_mutex );
+ avl_delete( &si->si_mods, mt, sp_avl_cmp );
+ ldap_pvt_thread_mutex_unlock( &si->si_mods_mutex );
ldap_pvt_thread_mutex_destroy( &mt->mt_mutex );
ch_free( mt );
}
}
- ldap_pvt_thread_mutex_unlock( &si->si_mods_mutex );
if ( !BER_BVISNULL( &opc->suuid ))
op->o_tmpfree( opc->suuid.bv_val, op->o_tmpmemctx );
if ( !BER_BVISNULL( &opc->sndn ))
}
static void
-syncprov_checkpoint( Operation *op, SlapReply *rs, slap_overinst *on )
+syncprov_checkpoint( Operation *op, slap_overinst *on )
{
syncprov_info_t *si = (syncprov_info_t *)on->on_bi.bi_private;
Modifications mod;
Operation opm;
- SlapReply rsm = { 0 };
+ SlapReply rsm = {REP_RESULT};
slap_callback cb = {0};
BackendDB be;
+ BackendInfo *bi;
+
+#ifdef CHECK_CSN
+ Syntax *syn = slap_schema.si_ad_contextCSN->ad_type->sat_syntax;
+ int i;
+ for ( i=0; i<si->si_numcsns; i++ ) {
+ assert( !syn->ssyn_validate( syn, si->si_ctxcsn+i ));
+ }
+#endif
mod.sml_numvals = si->si_numcsns;
mod.sml_values = si->si_ctxcsn;
mod.sml_nvalues = NULL;
be = *on->on_info->oi_origdb;
opm.o_bd = &be;
}
- opm.o_req_dn = opm.o_bd->be_suffix[0];
- opm.o_req_ndn = opm.o_bd->be_nsuffix[0];
+ opm.o_req_dn = si->si_contextdn;
+ opm.o_req_ndn = si->si_contextdn;
+ bi = opm.o_bd->bd_info;
opm.o_bd->bd_info = on->on_info->oi_orig;
opm.o_managedsait = SLAP_CONTROL_NONCRITICAL;
opm.o_no_schema_check = 1;
opm.o_bd->be_modify( &opm, &rsm );
+
+ if ( rsm.sr_err == LDAP_NO_SUCH_OBJECT &&
+ SLAP_SYNC_SUBENTRY( opm.o_bd )) {
+ const char *text;
+ char txtbuf[SLAP_TEXT_BUFLEN];
+ size_t textlen = sizeof txtbuf;
+ Entry *e = slap_create_context_csn_entry( opm.o_bd, NULL );
+ rs_reinit( &rsm, REP_RESULT );
+ slap_mods2entry( &mod, &e, 0, 1, &text, txtbuf, textlen);
+ opm.ora_e = e;
+ opm.o_bd->be_add( &opm, &rsm );
+ if ( e == opm.ora_e )
+ be_entry_release_w( &opm, opm.ora_e );
+ }
+ opm.o_bd->bd_info = bi;
+
if ( mod.sml_next != NULL ) {
slap_mods_free( mod.sml_next, 1 );
}
+#ifdef CHECK_CSN
+ for ( i=0; i<si->si_numcsns; i++ ) {
+ assert( !syn->ssyn_validate( syn, si->si_ctxcsn+i ));
+ }
+#endif
}
static void
sl = si->si_logs;
{
+ if ( BER_BVISEMPTY( &op->o_csn ) ) {
+ /* During the syncrepl refresh phase we can receive operations
+ * without a csn. We cannot reliably determine the consumers
+ * state with respect to such operations, so we ignore them and
+ * wipe out anything in the log if we see them.
+ */
+ ldap_pvt_thread_mutex_lock( &sl->sl_mutex );
+ while ( se = sl->sl_head ) {
+ sl->sl_head = se->se_next;
+ ch_free( se );
+ }
+ sl->sl_tail = NULL;
+ sl->sl_num = 0;
+ ldap_pvt_thread_mutex_unlock( &sl->sl_mutex );
+ return;
+ }
+
/* Allocate a record. UUIDs are not NUL-terminated. */
se = ch_malloc( sizeof( slog_entry ) + opc->suuid.bv_len +
op->o_csn.bv_len + 1 );
ldap_pvt_thread_mutex_lock( &sl->sl_mutex );
if ( sl->sl_head ) {
- sl->sl_tail->se_next = se;
+ /* Keep the list in csn order. */
+ if ( ber_bvcmp( &sl->sl_tail->se_csn, &se->se_csn ) <= 0 ) {
+ sl->sl_tail->se_next = se;
+ sl->sl_tail = se;
+ } else {
+ slog_entry **sep;
+
+ for ( sep = &sl->sl_head; *sep; sep = &(*sep)->se_next ) {
+ if ( ber_bvcmp( &se->se_csn, &(*sep)->se_csn ) < 0 ) {
+ se->se_next = *sep;
+ *sep = se;
+ break;
+ }
+ }
+ }
} else {
sl->sl_head = se;
+ sl->sl_tail = se;
+ if ( !sl->sl_mincsn ) {
+ sl->sl_numcsns = 1;
+ sl->sl_mincsn = ch_malloc( 2*sizeof( struct berval ));
+ sl->sl_sids = ch_malloc( sizeof( int ));
+ sl->sl_sids[0] = se->se_sid;
+ ber_dupbv( sl->sl_mincsn, &se->se_csn );
+ BER_BVZERO( &sl->sl_mincsn[1] );
+ }
}
- sl->sl_tail = se;
sl->sl_num++;
while ( sl->sl_num > sl->sl_size ) {
+ int i, j;
se = sl->sl_head;
sl->sl_head = se->se_next;
- strcpy( sl->sl_mincsn.bv_val, se->se_csn.bv_val );
- sl->sl_mincsn.bv_len = se->se_csn.bv_len;
+ for ( i=0; i<sl->sl_numcsns; i++ )
+ if ( sl->sl_sids[i] >= se->se_sid )
+ break;
+ if ( i == sl->sl_numcsns || sl->sl_sids[i] != se->se_sid ) {
+ slap_insert_csn_sids( (struct sync_cookie *)sl,
+ i, se->se_sid, &se->se_csn );
+ } else {
+ ber_bvreplace( &sl->sl_mincsn[i], &se->se_csn );
+ }
ch_free( se );
sl->sl_num--;
}
slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
slog_entry *se;
int i, j, ndel, num, nmods, mmods;
- char cbuf[LDAP_LUTIL_CSNSTR_BUFSIZE];
+ char cbuf[LDAP_PVT_CSNSTR_BUFSIZE];
BerVarray uuids;
struct berval delcsn[2];
delcsn[0].bv_len = se->se_csn.bv_len;
delcsn[0].bv_val[delcsn[0].bv_len] = '\0';
} else {
+ if ( se->se_tag == LDAP_REQ_ADD )
+ continue;
nmods++;
j = num - nmods;
}
if ( mmods ) {
Operation fop;
- SlapReply frs = { REP_RESULT };
int rc;
Filter mf, af;
AttributeAssertion eq = ATTRIBUTEASSERTION_INIT;
fop.o_bd->bd_info = (BackendInfo *)on->on_info;
for ( i=ndel; i<num; i++ ) {
- if ( uuids[i].bv_len == 0 ) continue;
+ if ( uuids[i].bv_len != 0 ) {
+ SlapReply frs = { REP_RESULT };
mf.f_av_value = uuids[i];
cb.sc_private = NULL;
fop.ors_slimit = 1;
- frs.sr_nentries = 0;
rc = fop.o_bd->be_search( &fop, &frs );
/* If entry was not found, add to delete list */
if ( !cb.sc_private ) {
uuids[ndel++] = uuids[i];
}
+ }
}
fop.o_bd->bd_info = (BackendInfo *)on;
}
if ( delcsn[0].bv_len ) {
slap_compose_sync_cookie( op, &cookie, delcsn, srs->sr_state.rid,
- srs->sr_state.sid );
+ slap_serverID ? slap_serverID : -1 );
Debug( LDAP_DEBUG_SYNC, "syncprov_playlog: cookie=%s\n", cookie.bv_val, 0, 0 );
}
if ( rs->sr_err == LDAP_SUCCESS )
{
- struct berval maxcsn = BER_BVNULL;
- char cbuf[LDAP_LUTIL_CSNSTR_BUFSIZE];
- int do_check = 0, have_psearches;
+ struct berval maxcsn;
+ char cbuf[LDAP_PVT_CSNSTR_BUFSIZE];
+ int do_check = 0, have_psearches, foundit, csn_changed = 0;
+
+ ldap_pvt_thread_mutex_lock( &si->si_resp_mutex );
/* Update our context CSN */
cbuf[0] = '\0';
+ maxcsn.bv_val = cbuf;
+ maxcsn.bv_len = sizeof(cbuf);
ldap_pvt_thread_rdwr_wlock( &si->si_csn_rwlock );
- slap_get_commit_csn( op, &maxcsn );
- if ( BER_BVISNULL( &maxcsn ) && SLAP_GLUE_SUBORDINATE( op->o_bd )) {
+
+ slap_get_commit_csn( op, &maxcsn, &foundit );
+ if ( BER_BVISEMPTY( &maxcsn ) && SLAP_GLUE_SUBORDINATE( op->o_bd )) {
/* syncrepl queues the CSN values in the db where
* it is configured , not where the changes are made.
* So look for a value in the glue db if we didn't
*/
BackendDB *be = op->o_bd;
op->o_bd = select_backend( &be->be_nsuffix[0], 1);
- slap_get_commit_csn( op, &maxcsn );
+ maxcsn.bv_val = cbuf;
+ maxcsn.bv_len = sizeof(cbuf);
+ slap_get_commit_csn( op, &maxcsn, &foundit );
op->o_bd = be;
}
- if ( !BER_BVISNULL( &maxcsn ) ) {
+ if ( !BER_BVISEMPTY( &maxcsn ) ) {
int i, sid;
- strcpy( cbuf, maxcsn.bv_val );
+#ifdef CHECK_CSN
+ Syntax *syn = slap_schema.si_ad_contextCSN->ad_type->sat_syntax;
+ assert( !syn->ssyn_validate( syn, &maxcsn ));
+#endif
sid = slap_parse_csn_sid( &maxcsn );
for ( i=0; i<si->si_numcsns; i++ ) {
+ if ( sid < si->si_sids[i] )
+ break;
if ( sid == si->si_sids[i] ) {
if ( ber_bvcmp( &maxcsn, &si->si_ctxcsn[i] ) > 0 ) {
ber_bvreplace( &si->si_ctxcsn[i], &maxcsn );
+ csn_changed = 1;
}
break;
}
}
/* It's a new SID for us */
- if ( i == si->si_numcsns ) {
- value_add_one( &si->si_ctxcsn, &maxcsn );
- si->si_numcsns++;
- si->si_sids = ch_realloc( si->si_sids, si->si_numcsns *
- sizeof(int));
- si->si_sids[i] = sid;
+ if ( i == si->si_numcsns || sid != si->si_sids[i] ) {
+ slap_insert_csn_sids((struct sync_cookie *)&(si->si_ctxcsn),
+ i, sid, &maxcsn );
+ csn_changed = 1;
}
- } else {
- /* internal ops that aren't meant to be replicated */
- ldap_pvt_thread_rdwr_wunlock( &si->si_csn_rwlock );
- return SLAP_CB_CONTINUE;
}
/* Don't do any processing for consumer contextCSN updates */
- if ( SLAP_SYNC_SHADOW( op->o_bd ) &&
- op->o_msgid == SLAP_SYNC_UPDATE_MSGID ) {
+ if ( op->o_dont_replicate ) {
+ if ( op->o_tag == LDAP_REQ_MODIFY &&
+ op->orm_modlist->sml_op == LDAP_MOD_REPLACE &&
+ op->orm_modlist->sml_desc == slap_schema.si_ad_contextCSN ) {
+ /* Catch contextCSN updates from syncrepl. We have to look at
+ * all the attribute values, as there may be more than one csn
+ * that changed, and only one can be passed in the csn queue.
+ */
+ Modifications *mod = op->orm_modlist;
+ unsigned i;
+ int j, sid;
+
+ for ( i=0; i<mod->sml_numvals; i++ ) {
+ sid = slap_parse_csn_sid( &mod->sml_values[i] );
+ for ( j=0; j<si->si_numcsns; j++ ) {
+ if ( sid < si->si_sids[j] )
+ break;
+ if ( sid == si->si_sids[j] ) {
+ if ( ber_bvcmp( &mod->sml_values[i], &si->si_ctxcsn[j] ) > 0 ) {
+ ber_bvreplace( &si->si_ctxcsn[j], &mod->sml_values[i] );
+ csn_changed = 1;
+ }
+ break;
+ }
+ }
+
+ if ( j == si->si_numcsns || sid != si->si_sids[j] ) {
+ slap_insert_csn_sids( (struct sync_cookie *)&si->si_ctxcsn,
+ j, sid, &mod->sml_values[i] );
+ csn_changed = 1;
+ }
+ }
+ if ( csn_changed )
+ si->si_dirty = 0;
ldap_pvt_thread_rdwr_wunlock( &si->si_csn_rwlock );
- return SLAP_CB_CONTINUE;
+
+ if ( csn_changed ) {
+ syncops *ss;
+ ldap_pvt_thread_mutex_lock( &si->si_ops_mutex );
+ for ( ss = si->si_ops; ss; ss = ss->s_next ) {
+ if ( ss->s_op->o_abandon )
+ continue;
+ /* Send the updated csn to all syncrepl consumers,
+ * including the server from which it originated.
+ * The syncrepl consumer and syncprov provider on
+ * the originating server may be configured to store
+ * their csn values in different entries.
+ */
+ syncprov_qresp( opc, ss, LDAP_SYNC_NEW_COOKIE );
+ }
+ ldap_pvt_thread_mutex_unlock( &si->si_ops_mutex );
+ }
+ } else {
+ ldap_pvt_thread_rdwr_wunlock( &si->si_csn_rwlock );
+ }
+ goto leave;
}
si->si_numops++;
if ( si->si_chkops || si->si_chktime ) {
- if ( si->si_chkops && si->si_numops >= si->si_chkops ) {
- do_check = 1;
- si->si_numops = 0;
- }
- if ( si->si_chktime &&
- (op->o_time - si->si_chklast >= si->si_chktime )) {
- if ( si->si_chklast ) {
+ /* Never checkpoint adding the context entry,
+ * it will deadlock
+ */
+ if ( op->o_tag != LDAP_REQ_ADD ||
+ !dn_match( &op->o_req_ndn, &si->si_contextdn )) {
+ if ( si->si_chkops && si->si_numops >= si->si_chkops ) {
do_check = 1;
- si->si_chklast = op->o_time;
- } else {
- si->si_chklast = 1;
+ si->si_numops = 0;
+ }
+ if ( si->si_chktime &&
+ (op->o_time - si->si_chklast >= si->si_chktime )) {
+ if ( si->si_chklast ) {
+ do_check = 1;
+ si->si_chklast = op->o_time;
+ } else {
+ si->si_chklast = 1;
+ }
}
}
}
+ si->si_dirty = !csn_changed;
ldap_pvt_thread_rdwr_wunlock( &si->si_csn_rwlock );
if ( do_check ) {
ldap_pvt_thread_rdwr_rlock( &si->si_csn_rwlock );
- syncprov_checkpoint( op, rs, on );
+ syncprov_checkpoint( op, on );
ldap_pvt_thread_rdwr_runlock( &si->si_csn_rwlock );
}
- opc->sctxcsn.bv_len = maxcsn.bv_len;
- opc->sctxcsn.bv_val = cbuf;
+ /* only update consumer ctx if this is a newer csn */
+ if ( csn_changed ) {
+ opc->sctxcsn = maxcsn;
+ }
/* Handle any persistent searches */
ldap_pvt_thread_mutex_lock( &si->si_ops_mutex );
}
/* Add any log records */
- if ( si->si_logs && op->o_tag != LDAP_REQ_ADD ) {
+ if ( si->si_logs ) {
syncprov_add_slog( op );
}
-
+leave: ldap_pvt_thread_mutex_unlock( &si->si_resp_mutex );
}
return SLAP_CB_CONTINUE;
}
syncprov_info_t *si = on->on_bi.bi_private;
int rc = SLAP_CB_CONTINUE;
- if ( dn_match( &op->o_req_ndn, op->o_bd->be_nsuffix ) &&
+ if ( dn_match( &op->o_req_ndn, &si->si_contextdn ) &&
op->oq_compare.rs_ava->aa_desc == slap_schema.si_ad_contextCSN )
{
Entry e = {0};
Attribute a = {0};
- e.e_name = op->o_bd->be_suffix[0];
- e.e_nname = op->o_bd->be_nsuffix[0];
+ e.e_name = si->si_contextdn;
+ e.e_nname = si->si_contextdn;
e.e_attrs = &a;
a.a_desc = slap_schema.si_ad_contextCSN;
a.a_vals = si->si_ctxcsn;
a.a_nvals = a.a_vals;
+ a.a_numvals = si->si_numcsns;
rs->sr_err = access_allowed( op, &e, op->oq_compare.rs_ava->aa_desc,
&op->oq_compare.rs_ava->aa_value, ACL_COMPARE, NULL );
ldap_pvt_thread_mutex_lock( &si->si_ops_mutex );
have_psearches = ( si->si_ops != NULL );
+ si->si_active++;
ldap_pvt_thread_mutex_unlock( &si->si_ops_mutex );
cbsize = sizeof(slap_callback) + sizeof(opcookie) +
cb->sc_next = op->o_callback;
op->o_callback = cb;
+ opc->osid = -1;
+ opc->rsid = -1;
+ if ( op->o_csn.bv_val ) {
+ opc->osid = slap_parse_csn_sid( &op->o_csn );
+ }
+ if ( op->o_controls ) {
+ struct sync_cookie *scook =
+ op->o_controls[slap_cids.sc_LDAPsync];
+ if ( scook )
+ opc->rsid = scook->sid;
+ }
+
+ if ( op->o_dont_replicate )
+ return SLAP_CB_CONTINUE;
+
/* If there are active persistent searches, lock this operation.
* See seqmod.c for the locking logic on its own.
*/
mt = avl_find( si->si_mods, &mtdummy, sp_avl_cmp );
if ( mt ) {
ldap_pvt_thread_mutex_lock( &mt->mt_mutex );
+ if ( mt->mt_mods == NULL ) {
+ /* Cannot reuse this mt, as another thread is about
+ * to release it in syncprov_op_cleanup.
+ */
+ ldap_pvt_thread_mutex_unlock( &mt->mt_mutex );
+ mt = NULL;
+ }
+ }
+ if ( mt ) {
ldap_pvt_thread_mutex_unlock( &si->si_mods_mutex );
mt->mt_tail->mi_next = mi;
mt->mt_tail = mi;
* Currently it's not an issue because there are
* no dynamic config deletes...
*/
+ if ( slapd_shutdown )
+ return SLAPD_ABANDON;
+
if ( !ldap_pvt_thread_pool_pausecheck( &connection_pool ))
ldap_pvt_thread_yield();
ldap_pvt_thread_mutex_lock( &mt->mt_mutex );
avl_insert( &si->si_mods, mt, sp_avl_cmp, avl_dup_error );
ldap_pvt_thread_mutex_unlock( &si->si_mods_mutex );
}
+ opc->smt = mt;
}
if (( have_psearches || si->si_logs ) && op->o_tag != LDAP_REQ_ADD )
op2->o_time = op->o_time;
op2->o_bd = on->on_info->oi_origdb;
op2->o_request = op->o_request;
+ op2->o_managedsait = op->o_managedsait;
LDAP_SLIST_FIRST(&op2->o_extra)->oe_key = on;
LDAP_SLIST_NEXT(LDAP_SLIST_FIRST(&op2->o_extra), oe_next) = NULL;
rs->sr_ctrls = op->o_tmpalloc( sizeof(LDAPControl *)*2,
op->o_tmpmemctx );
rs->sr_ctrls[1] = NULL;
+ rs->sr_flags |= REP_CTRLS_MUSTBEFREED;
/* If we're in delta-sync mode, always send a cookie */
if ( si->si_nopres && si->si_usehint && a ) {
struct berval cookie;
- slap_compose_sync_cookie( op, &cookie, a->a_nvals, srs->sr_state.rid, srs->sr_state.sid );
+ slap_compose_sync_cookie( op, &cookie, a->a_nvals, srs->sr_state.rid, slap_serverID ? slap_serverID : -1 );
rs->sr_err = syncprov_state_ctrl( op, rs, rs->sr_entry,
LDAP_SYNC_ADD, rs->sr_ctrls, 0, 1, &cookie );
} else {
LDAP_SYNC_ADD, rs->sr_ctrls, 0, 0, NULL );
}
} else if ( rs->sr_type == REP_RESULT && rs->sr_err == LDAP_SUCCESS ) {
- struct berval cookie;
+ struct berval cookie = BER_BVNULL;
- if ( ss->ss_flags & SS_CHANGED ) {
+ if ( ( ss->ss_flags & SS_CHANGED ) &&
+ ss->ss_ctxcsn && !BER_BVISNULL( &ss->ss_ctxcsn[0] )) {
slap_compose_sync_cookie( op, &cookie, ss->ss_ctxcsn,
- srs->sr_state.rid, srs->sr_state.sid );
+ srs->sr_state.rid, slap_serverID ? slap_serverID : -1 );
Debug( LDAP_DEBUG_SYNC, "syncprov_search_response: cookie=%s\n", cookie.bv_val, 0, 0 );
}
LDAP_TAG_SYNC_REFRESH_PRESENT : LDAP_TAG_SYNC_REFRESH_DELETE,
( ss->ss_flags & SS_CHANGED ) ? &cookie : NULL,
1, NULL, 0 );
- if ( ss->ss_flags & SS_CHANGED )
+ if ( !BER_BVISNULL( &cookie ))
op->o_tmpfree( cookie.bv_val, op->o_tmpmemctx );
/* Detach this Op from frontend control */
- ldap_pvt_thread_mutex_lock( &ss->ss_so->s_mutex );
ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
/* But not if this connection was closed along the way */
if ( op->o_abandon ) {
ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
- ldap_pvt_thread_mutex_unlock( &ss->ss_so->s_mutex );
/* syncprov_ab_cleanup will free this syncop */
return SLAPD_ABANDON;
} else {
+ ldap_pvt_thread_mutex_lock( &ss->ss_so->s_mutex );
/* Turn off the refreshing flag */
ss->ss_so->s_flags ^= PS_IS_REFRESHING;
/* If there are queued responses, fire them off */
if ( ss->ss_so->s_res )
syncprov_qstart( ss->ss_so );
+ ldap_pvt_thread_mutex_unlock( &ss->ss_so->s_mutex );
}
- ldap_pvt_thread_mutex_unlock( &ss->ss_so->s_mutex );
return LDAP_SUCCESS;
}
sync_control *srs;
BerVarray ctxcsn;
int i, *sids, numcsns;
- struct berval mincsn;
+ struct berval mincsn, maxcsn;
+ int minsid, maxsid;
+ int dirty = 0;
if ( !(op->o_sync_mode & SLAP_SYNC_REFRESH) ) return SLAP_CB_CONTINUE;
}
srs = op->o_controls[slap_cids.sc_LDAPsync];
- op->o_managedsait = SLAP_CONTROL_NONCRITICAL;
/* If this is a persistent search, set it up right away */
if ( op->o_sync_mode & SLAP_SYNC_PERSIST ) {
sop->s_inuse = 1;
ldap_pvt_thread_mutex_lock( &si->si_ops_mutex );
+ while ( si->si_active ) {
+ /* Wait for active mods to finish before proceeding, as they
+ * may already have inspected the si_ops list looking for
+ * consumers to replicate the change to. Using the log
+ * doesn't help, as we may finish playing it before the
+ * active mods gets added to it.
+ */
+ ldap_pvt_thread_mutex_unlock( &si->si_ops_mutex );
+ if ( slapd_shutdown )
+ return SLAPD_ABANDON;
+ if ( !ldap_pvt_thread_pool_pausecheck( &connection_pool ))
+ ldap_pvt_thread_yield();
+ ldap_pvt_thread_mutex_lock( &si->si_ops_mutex );
+ }
sop->s_next = si->si_ops;
si->si_ops = sop;
ldap_pvt_thread_mutex_unlock( &si->si_ops_mutex );
ctxcsn = NULL;
sids = NULL;
}
+ dirty = si->si_dirty;
ldap_pvt_thread_rdwr_runlock( &si->si_csn_rwlock );
/* If we have a cookie, handle the PRESENT lookups */
/* If there are SIDs we don't recognize in the cookie, drop them */
for (i=0; i<srs->sr_state.numcsns; ) {
- for (j=0; j<numcsns; j++) {
- if ( srs->sr_state.sids[i] == sids[j] ) {
+ for (j=i; j<numcsns; j++) {
+ if ( srs->sr_state.sids[i] <= sids[j] ) {
break;
}
}
/* not found */
- if ( j == numcsns ) {
- struct berval tmp = srs->sr_state.ctxcsn[i];
- j = srs->sr_state.numcsns - 1;
- srs->sr_state.ctxcsn[i] = srs->sr_state.ctxcsn[j];
- tmp.bv_len = 0;
- srs->sr_state.ctxcsn[j] = tmp;
- srs->sr_state.numcsns = j;
- srs->sr_state.sids[i] = srs->sr_state.sids[j];
+ if ( j == numcsns || srs->sr_state.sids[i] != sids[j] ) {
+ char *tmp = srs->sr_state.ctxcsn[i].bv_val;
+ srs->sr_state.numcsns--;
+ for ( j=i; j<srs->sr_state.numcsns; j++ ) {
+ srs->sr_state.ctxcsn[j] = srs->sr_state.ctxcsn[j+1];
+ srs->sr_state.sids[j] = srs->sr_state.sids[j+1];
+ }
+ srs->sr_state.ctxcsn[j].bv_val = tmp;
+ srs->sr_state.ctxcsn[j].bv_len = 0;
continue;
}
i++;
}
- /* Find the smallest CSN */
- mincsn = srs->sr_state.ctxcsn[0];
- for ( i=1; i<srs->sr_state.numcsns; i++ ) {
- if ( ber_bvcmp( &mincsn, &srs->sr_state.ctxcsn[i] ) > 0 )
- mincsn = srs->sr_state.ctxcsn[i];
+ if (srs->sr_state.numcsns != numcsns) {
+ /* consumer doesn't have the right number of CSNs */
+ changed = SS_CHANGED;
+ if ( srs->sr_state.ctxcsn ) {
+ ber_bvarray_free_x( srs->sr_state.ctxcsn, op->o_tmpmemctx );
+ srs->sr_state.ctxcsn = NULL;
+ }
+ if ( srs->sr_state.sids ) {
+ slap_sl_free( srs->sr_state.sids, op->o_tmpmemctx );
+ srs->sr_state.sids = NULL;
+ }
+ srs->sr_state.numcsns = 0;
+ goto shortcut;
+ }
+
+ /* Find the smallest CSN which differs from contextCSN */
+ mincsn.bv_len = 0;
+ maxcsn.bv_len = 0;
+ for ( i=0,j=0; i<srs->sr_state.numcsns; i++ ) {
+ int newer;
+ while ( srs->sr_state.sids[i] != sids[j] ) j++;
+ if ( BER_BVISEMPTY( &maxcsn ) || ber_bvcmp( &maxcsn,
+ &srs->sr_state.ctxcsn[i] ) < 0 ) {
+ maxcsn = srs->sr_state.ctxcsn[i];
+ maxsid = sids[j];
+ }
+ newer = ber_bvcmp( &srs->sr_state.ctxcsn[i], &ctxcsn[j] );
+ /* If our state is newer, tell consumer about changes */
+ if ( newer < 0) {
+ changed = SS_CHANGED;
+ if ( BER_BVISEMPTY( &mincsn ) || ber_bvcmp( &mincsn,
+ &srs->sr_state.ctxcsn[i] ) > 0 ) {
+ mincsn = srs->sr_state.ctxcsn[i];
+ minsid = sids[j];
+ }
+ } else if ( newer > 0 ) {
+ /* our state is older, complain to consumer */
+ rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
+ rs->sr_text = "consumer state is newer than provider!";
+bailout:
+ if ( sop ) {
+ syncops **sp = &si->si_ops;
+
+ ldap_pvt_thread_mutex_lock( &si->si_ops_mutex );
+ while ( *sp != sop )
+ sp = &(*sp)->s_next;
+ *sp = sop->s_next;
+ ldap_pvt_thread_mutex_unlock( &si->si_ops_mutex );
+ ch_free( sop );
+ }
+ rs->sr_ctrls = NULL;
+ send_ldap_result( op, rs );
+ return rs->sr_err;
+ }
+ }
+ if ( BER_BVISEMPTY( &mincsn )) {
+ mincsn = maxcsn;
+ minsid = maxsid;
}
/* If nothing has changed, shortcut it */
- if ( srs->sr_state.numcsns == numcsns ) {
- int i, j;
- for ( i=0; i<srs->sr_state.numcsns; i++ ) {
- for ( j=0; j<numcsns; j++ ) {
- if ( srs->sr_state.sids[i] != sids[j] )
- continue;
- if ( !bvmatch( &srs->sr_state.ctxcsn[i], &ctxcsn[j] ))
- changed = SS_CHANGED;
- break;
- }
- if ( changed )
- break;
- }
- if ( !changed ) {
- do_present = 0;
+ if ( !changed && !dirty ) {
+ do_present = 0;
no_change: if ( !(op->o_sync_mode & SLAP_SYNC_PERSIST) ) {
- LDAPControl *ctrls[2];
-
- ctrls[0] = NULL;
- ctrls[1] = NULL;
- syncprov_done_ctrl( op, rs, ctrls, 0, 0,
- NULL, LDAP_SYNC_REFRESH_DELETES );
- rs->sr_ctrls = ctrls;
- rs->sr_err = LDAP_SUCCESS;
- send_ldap_result( op, rs );
- rs->sr_ctrls = NULL;
- return rs->sr_err;
- }
- goto shortcut;
+ LDAPControl *ctrls[2];
+
+ ctrls[0] = NULL;
+ ctrls[1] = NULL;
+ syncprov_done_ctrl( op, rs, ctrls, 0, 0,
+ NULL, LDAP_SYNC_REFRESH_DELETES );
+ rs->sr_ctrls = ctrls;
+ rs->sr_err = LDAP_SUCCESS;
+ send_ldap_result( op, rs );
+ rs->sr_ctrls = NULL;
+ return rs->sr_err;
}
- } else {
- /* consumer doesn't have the right number of CSNs */
- changed = SS_CHANGED;
+ goto shortcut;
}
+
/* Do we have a sessionlog for this search? */
sl=si->si_logs;
if ( sl ) {
+ int do_play = 0;
ldap_pvt_thread_mutex_lock( &sl->sl_mutex );
/* Are there any log entries, and is the consumer state
* present in the session log?
*/
- if ( sl->sl_num > 0 && ber_bvcmp( &mincsn, &sl->sl_mincsn ) >= 0 ) {
+ if ( sl->sl_num > 0 ) {
+ int i;
+ for ( i=0; i<sl->sl_numcsns; i++ ) {
+ /* SID not present == new enough */
+ if ( minsid < sl->sl_sids[i] ) {
+ do_play = 1;
+ break;
+ }
+ /* SID present and new enough */
+ if ( minsid == sl->sl_sids[i]
+ && ber_bvcmp( &mincsn, &sl->sl_mincsn[i] ) >= 0 ) {
+ do_play = 1;
+ break;
+ }
+ }
+ /* SID not present == new enough */
+ if ( i == sl->sl_numcsns )
+ do_play = 1;
+ }
+ if ( do_play ) {
do_present = 0;
/* mutex is unlocked in playlog */
syncprov_playlog( op, rs, sl, srs, ctxcsn, numcsns, sids );
}
}
/* Is the CSN still present in the database? */
- if ( syncprov_findcsn( op, FIND_CSN ) != LDAP_SUCCESS ) {
+ if ( syncprov_findcsn( op, FIND_CSN, &mincsn ) != LDAP_SUCCESS ) {
/* No, so a reload is required */
/* the 2.2 consumer doesn't send this hint */
if ( si->si_usehint && srs->sr_rhint == 0 ) {
ber_bvarray_free_x( ctxcsn, op->o_tmpmemctx );
if ( sids )
op->o_tmpfree( sids, op->o_tmpmemctx );
- send_ldap_error( op, rs, LDAP_SYNC_REFRESH_REQUIRED, "sync cookie is stale" );
- return rs->sr_err;
+ rs->sr_err = LDAP_SYNC_REFRESH_REQUIRED;
+ rs->sr_text = "sync cookie is stale";
+ goto bailout;
}
if ( srs->sr_state.ctxcsn ) {
ber_bvarray_free_x( srs->sr_state.ctxcsn, op->o_tmpmemctx );
} else {
gotstate = 1;
/* If changed and doing Present lookup, send Present UUIDs */
- if ( do_present && syncprov_findcsn( op, FIND_PRESENT ) !=
+ if ( do_present && syncprov_findcsn( op, FIND_PRESENT, 0 ) !=
LDAP_SUCCESS ) {
if ( ctxcsn )
ber_bvarray_free_x( ctxcsn, op->o_tmpmemctx );
if ( sids )
op->o_tmpfree( sids, op->o_tmpmemctx );
- send_ldap_result( op, rs );
- return rs->sr_err;
+ goto bailout;
}
}
} else {
}
/* If something changed, find the changes */
- if ( gotstate && changed ) {
+ if ( gotstate && ( changed || dirty ) ) {
Filter *fand, *fava;
fand = op->o_tmpalloc( sizeof(Filter), op->o_tmpmemctx );
#endif
ber_dupbv_x( &fava->f_ava->aa_value, &mincsn, op->o_tmpmemctx );
fava->f_next = op->ors_filter;
+ if ( sop )
+ ldap_pvt_thread_mutex_lock( &sop->s_mutex );
op->ors_filter = fand;
filter2bv_x( op, op->ors_filter, &op->ors_filterstr );
- if ( sop )
+ if ( sop ) {
sop->s_flags |= PS_FIX_FILTER;
+ ldap_pvt_thread_mutex_unlock( &sop->s_mutex );
+ }
}
/* Let our callback add needed info to returned entries */
* the refresh phase, just invoke the response callback to transition
* us into persist phase
*/
- if ( !changed ) {
+ if ( !changed && !dirty ) {
rs->sr_err = LDAP_SUCCESS;
rs->sr_nentries = 0;
send_ldap_result( op, rs );
return SLAP_CB_CONTINUE;
if ( rs->sr_entry &&
- dn_match( &rs->sr_entry->e_nname, op->o_bd->be_nsuffix )) {
+ dn_match( &rs->sr_entry->e_nname, &si->si_contextdn )) {
if ( SLAP_OPATTRS( rs->sr_attr_flags ) ||
ad_inlist( slap_schema.si_ad_contextCSN, rs->sr_attrs )) {
}
if ( !ap ) {
- if ( !(rs->sr_flags & REP_ENTRY_MODIFIABLE) ) {
- Entry *e = entry_dup( rs->sr_entry );
- if ( rs->sr_flags & REP_ENTRY_MUSTRELEASE ) {
- overlay_entry_release_ov( op, rs->sr_entry, 0, on );
- rs->sr_flags ^= REP_ENTRY_MUSTRELEASE;
- } else if ( rs->sr_flags & REP_ENTRY_MUSTBEFREED ) {
- entry_free( rs->sr_entry );
- }
- rs->sr_entry = e;
- rs->sr_flags |=
- REP_ENTRY_MODIFIABLE|REP_ENTRY_MUSTBEFREED;
+ if ( rs_entry2modifiable( op, rs, on )) {
a = attr_find( rs->sr_entry->e_attrs,
slap_schema.si_ad_contextCSN );
}
case SP_CHKPT:
if ( si->si_chkops || si->si_chktime ) {
struct berval bv;
+ /* we assume si_chktime is a multiple of 60
+ * because the parsed value was originally
+ * multiplied by 60 */
bv.bv_len = snprintf( c->cr_msg, sizeof( c->cr_msg ),
- "%d %d", si->si_chkops, si->si_chktime );
- if ( bv.bv_len < 0 || bv.bv_len >= sizeof( c->cr_msg ) ) {
+ "%d %d", si->si_chkops, si->si_chktime/60 );
+ if ( bv.bv_len >= sizeof( c->cr_msg ) ) {
rc = 1;
} else {
bv.bv_val = c->cr_msg;
}
sl = si->si_logs;
if ( !sl ) {
- sl = ch_malloc( sizeof( sessionlog ) + LDAP_LUTIL_CSNSTR_BUFSIZE );
- sl->sl_mincsn.bv_val = (char *)(sl+1);
- sl->sl_mincsn.bv_len = 0;
+ sl = ch_malloc( sizeof( sessionlog ));
+ sl->sl_mincsn = NULL;
+ sl->sl_sids = NULL;
sl->sl_num = 0;
+ sl->sl_numcsns = 0;
sl->sl_head = sl->sl_tail = NULL;
ldap_pvt_thread_mutex_init( &sl->sl_mutex );
si->si_logs = sl;
void *ptr
)
{
- syncprov_findcsn( ptr, FIND_MAXCSN );
+ syncprov_findcsn( ptr, FIND_MAXCSN, 0 );
return NULL;
}
+
/* Read any existing contextCSN from the underlying db.
* Then search for any entries newer than that. If no value exists,
* just generate it. Cache whatever result.
}
thrctx = ldap_pvt_thread_pool_context();
- connection_fake_init( &conn, &opbuf, thrctx );
+ connection_fake_init2( &conn, &opbuf, thrctx, 0 );
op = &opbuf.ob_op;
op->o_bd = be;
op->o_dn = be->be_rootdn;
op->o_ndn = be->be_rootndn;
- rc = overlay_entry_get_ov( op, be->be_nsuffix, NULL,
+ if ( SLAP_SYNC_SUBENTRY( be )) {
+ build_new_dn( &si->si_contextdn, be->be_nsuffix,
+ (struct berval *)&slap_ldapsync_cn_bv, NULL );
+ } else {
+ si->si_contextdn = be->be_nsuffix[0];
+ }
+ rc = overlay_entry_get_ov( op, &si->si_contextdn, NULL,
slap_schema.si_ad_contextCSN, 0, &e, on );
if ( e ) {
ber_bvarray_dup_x( &si->si_ctxcsn, a->a_vals, NULL );
si->si_numcsns = a->a_numvals;
si->si_sids = slap_parse_csn_sids( si->si_ctxcsn, a->a_numvals, NULL );
+ slap_sort_csn_sids( si->si_ctxcsn, si->si_sids, si->si_numcsns, NULL );
}
overlay_entry_release_ov( op, e, 0, on );
- if ( si->si_ctxcsn ) {
+ if ( si->si_ctxcsn && !SLAP_DBCLEAN( be )) {
op->o_req_dn = be->be_suffix[0];
op->o_req_ndn = be->be_nsuffix[0];
op->ors_scope = LDAP_SCOPE_SUBTREE;
/* Didn't find a contextCSN, should we generate one? */
if ( !si->si_ctxcsn ) {
- char csnbuf[ LDAP_LUTIL_CSNSTR_BUFSIZE ];
+ char csnbuf[ LDAP_PVT_CSNSTR_BUFSIZE ];
struct berval csn;
if ( SLAP_SYNC_SHADOW( op->o_bd )) {
si->si_numops++;
}
+ /* Initialize the sessionlog mincsn */
+ if ( si->si_logs && si->si_numcsns ) {
+ sessionlog *sl = si->si_logs;
+ int i;
+ ber_bvarray_dup_x( &sl->sl_mincsn, si->si_ctxcsn, NULL );
+ sl->sl_numcsns = si->si_numcsns;
+ sl->sl_sids = ch_malloc( si->si_numcsns * sizeof(int) );
+ for ( i=0; i < si->si_numcsns; i++ )
+ sl->sl_sids[i] = si->si_sids[i];
+ }
+
out:
op->o_bd->bd_info = (BackendInfo *)on;
return 0;
{
slap_overinst *on = (slap_overinst *) be->bd_info;
syncprov_info_t *si = (syncprov_info_t *)on->on_bi.bi_private;
+#ifdef SLAP_CONFIG_DELETE
+ syncops *so, *sonext;
+#endif /* SLAP_CONFIG_DELETE */
if ( slapMode & SLAP_TOOL_MODE ) {
return 0;
Connection conn = {0};
OperationBuffer opbuf;
Operation *op;
- SlapReply rs = {REP_RESULT};
void *thrctx;
thrctx = ldap_pvt_thread_pool_context();
- connection_fake_init( &conn, &opbuf, thrctx );
+ connection_fake_init2( &conn, &opbuf, thrctx, 0 );
op = &opbuf.ob_op;
op->o_bd = be;
op->o_dn = be->be_rootdn;
op->o_ndn = be->be_rootndn;
- syncprov_checkpoint( op, &rs, on );
+ syncprov_checkpoint( op, on );
}
+#ifdef SLAP_CONFIG_DELETE
+ ldap_pvt_thread_mutex_lock( &si->si_ops_mutex );
+ for ( so=si->si_ops, sonext=so; so; so=sonext ) {
+ SlapReply rs = {REP_RESULT};
+ rs.sr_err = LDAP_UNAVAILABLE;
+ send_ldap_result( so->s_op, &rs );
+ sonext=so->s_next;
+ syncprov_drop_psearch( so, 0);
+ }
+ si->si_ops=NULL;
+ ldap_pvt_thread_mutex_unlock( &si->si_ops_mutex );
+ overlay_unregister_control( be, LDAP_CONTROL_SYNC );
+#endif /* SLAP_CONFIG_DELETE */
+
return 0;
}
ldap_pvt_thread_rdwr_init( &si->si_csn_rwlock );
ldap_pvt_thread_mutex_init( &si->si_ops_mutex );
ldap_pvt_thread_mutex_init( &si->si_mods_mutex );
+ ldap_pvt_thread_mutex_init( &si->si_resp_mutex );
csn_anlist[0].an_desc = slap_schema.si_ad_entryCSN;
csn_anlist[0].an_name = slap_schema.si_ad_entryCSN->ad_cname;
if ( si ) {
if ( si->si_logs ) {
- slog_entry *se = si->si_logs->sl_head;
+ sessionlog *sl = si->si_logs;
+ slog_entry *se = sl->sl_head;
while ( se ) {
slog_entry *se_next = se->se_next;
ch_free( se );
se = se_next;
}
-
+ if ( sl->sl_mincsn )
+ ber_bvarray_free( sl->sl_mincsn );
+ if ( sl->sl_sids )
+ ch_free( sl->sl_sids );
+
+ ldap_pvt_thread_mutex_destroy(&si->si_logs->sl_mutex);
ch_free( si->si_logs );
}
if ( si->si_ctxcsn )
ber_bvarray_free( si->si_ctxcsn );
if ( si->si_sids )
ch_free( si->si_sids );
+ ldap_pvt_thread_mutex_destroy( &si->si_resp_mutex );
ldap_pvt_thread_mutex_destroy( &si->si_mods_mutex );
ldap_pvt_thread_mutex_destroy( &si->si_ops_mutex );
ldap_pvt_thread_rdwr_destroy( &si->si_csn_rwlock );
projects / openldap / blobdiff