--- servers/slapd/overlays/syncprov.c 2009/11/10 19:40:20 1.147.2.61
+++ servers/slapd/overlays/syncprov.c 2011/01/04 18:25:20 1.147.2.82
@@ -2,7 +2,7 @@
/* syncprov.c - syncrepl provider */
/* This work is part of OpenLDAP Software .
*
- * Copyright 2004-2009 The OpenLDAP Foundation.
+ * Copyright 2004-2010 The OpenLDAP Foundation.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
@@ -48,6 +48,7 @@ typedef struct modtarget {
/* 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;
@@ -112,7 +113,6 @@ typedef struct slog_entry {
} slog_entry;
typedef struct sessionlog {
- struct berval sl_mincsn;
int sl_num;
int sl_size;
slog_entry *sl_head;
@@ -124,6 +124,7 @@ typedef struct sessionlog {
typedef struct syncprov_info_t {
syncops *si_ops;
BerVarray si_ctxcsn; /* ldapsync context */
+ struct berval si_contextdn;
int *si_sids;
int si_numcsns;
int si_chkops; /* checkpointing info */
@@ -131,6 +132,9 @@ typedef struct syncprov_info_t {
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;
@@ -144,6 +148,7 @@ 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 */
@@ -153,6 +158,11 @@ typedef struct opcookie {
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 */
@@ -583,8 +593,8 @@ syncprov_findcsn( Operation *op, find_cs
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;
@@ -738,6 +748,36 @@ again:
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 )
{
@@ -761,6 +801,12 @@ syncprov_free_syncop( syncops *so )
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 );
@@ -769,8 +815,7 @@ syncprov_free_syncop( syncops *so )
/* 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;
@@ -791,15 +836,13 @@ syncprov_sendresp( Operation *op, opcook
}
#ifdef LDAP_DEBUG
- if ( !BER_BVISNULL( &cookie )) {
- if ( so->s_sid > 0 ) {
- Debug( LDAP_DEBUG_SYNC, "syncprov_sendresp: to=%03x, cookie=%s\n",
- so->s_sid, cookie.bv_val , 0 );
- } else {
- Debug( LDAP_DEBUG_SYNC, "syncprov_sendresp: cookie=%s\n",
- cookie.bv_val, 0, 0 );
- }
- }
+ 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;
@@ -812,35 +855,29 @@ syncprov_sendresp( Operation *op, opcook
}
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 && 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 && so->s_op->o_managedsait <= SLAP_CONTROL_IGNORED ) {
struct berval bv = BER_BVNULL;
rs.sr_ref = &bv;
@@ -854,7 +891,14 @@ syncprov_sendresp( Operation *op, opcook
}
/* 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;
}
@@ -889,9 +933,9 @@ syncprov_qplay( Operation *op, syncops *
ldap_pvt_thread_mutex_unlock( &so->s_mutex );
if ( sr->s_mode == LDAP_SYNC_NEW_COOKIE ) {
- SlapReply rs = { REP_INTERMEDIATE };
+ SlapReply rs = { REP_INTERMEDIATE };
- rc = syncprov_sendinfo( op, &rs, LDAP_TAG_SYNC_NEW_COOKIE,
+ rc = syncprov_sendinfo( op, &rs, LDAP_TAG_SYNC_NEW_COOKIE,
&sr->s_csn, 0, NULL, 0 );
} else {
opc.sdn = sr->s_dn;
@@ -899,22 +943,15 @@ syncprov_qplay( Operation *op, syncops *
opc.suuid = sr->s_uuid;
opc.sctxcsn = sr->s_csn;
opc.sreference = sr->s_isreference;
- e = NULL;
+ opc.se = sr->s_e;
- 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 );
+ rc = syncprov_sendresp( op, &opc, so, sr->s_mode );
- if ( e ) {
- overlay_entry_release_ov( op, e, 0, on );
+ }
+ if ( sr->s_e ) {
+ if ( !dec_mutexint( sr->s_e->e_private )) {
+ sr->s_e->e_private = NULL;
+ entry_free ( sr->s_e );
}
}
@@ -1008,6 +1045,10 @@ syncprov_qresp( opcookie *opc, syncops *
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;
@@ -1151,9 +1192,12 @@ syncprov_matchops( Operation *op, opcook
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;
@@ -1161,6 +1205,13 @@ syncprov_matchops( Operation *op, opcook
}
} 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 ) {
@@ -1190,22 +1241,18 @@ syncprov_matchops( Operation *op, opcook
if ( ss->s_op->o_abandon )
continue;
- /* First time thru, check for possible skips */
- if ( saveit || op->o_tag == LDAP_REQ_ADD ) {
-
- /* 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 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;
- }
+ /* 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 */
@@ -1225,7 +1272,6 @@ syncprov_matchops( Operation *op, opcook
continue;
}
-
/* If we're sending results now, look for this op in old matches */
if ( !saveit ) {
syncmatches *old;
@@ -1249,6 +1295,7 @@ syncprov_matchops( Operation *op, opcook
}
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;
@@ -1257,7 +1304,14 @@ syncprov_matchops( Operation *op, opcook
op2.o_hdr = &oh;
op2.o_extra = op->o_extra;
op2.o_callback = NULL;
- rc = test_filter( &op2, e, ss->s_op->ors_filter );
+ 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",
@@ -1297,9 +1351,17 @@ syncprov_matchops( Operation *op, opcook
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 );
}
@@ -1316,6 +1378,11 @@ syncprov_op_cleanup( Operation *op, Slap
syncmatches *sm, *snext;
modtarget *mt, mtdummy;
+ 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;
syncprov_free_syncop( sm->sm_op );
@@ -1361,6 +1428,8 @@ syncprov_checkpoint( Operation *op, Slap
SlapReply rsm = { 0 };
slap_callback cb = {0};
BackendDB be;
+ BackendInfo *bi;
+
#ifdef CHECK_CSN
Syntax *syn = slap_schema.si_ad_contextCSN->ad_type->sat_syntax;
@@ -1387,12 +1456,28 @@ syncprov_checkpoint( Operation *op, Slap
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 );
+ 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 );
}
@@ -1414,6 +1499,23 @@ syncprov_add_slog( Operation *op )
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 );
@@ -1432,17 +1534,29 @@ syncprov_add_slog( Operation *op )
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;
}
- sl->sl_tail = se;
sl->sl_num++;
while ( sl->sl_num > sl->sl_size ) {
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;
ch_free( se );
sl->sl_num--;
}
@@ -1468,7 +1582,7 @@ syncprov_playlog( Operation *op, SlapRep
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];
@@ -1643,7 +1757,7 @@ syncprov_op_response( Operation *op, Sla
if ( rs->sr_err == LDAP_SUCCESS )
{
struct berval maxcsn;
- char cbuf[LDAP_LUTIL_CSNSTR_BUFSIZE];
+ 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 );
@@ -1654,56 +1768,6 @@ syncprov_op_response( Operation *op, Sla
maxcsn.bv_len = sizeof(cbuf);
ldap_pvt_thread_rdwr_wlock( &si->si_csn_rwlock );
- if ( op->o_dont_replicate && 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;
- int i, j, sid;
-
- for ( i=0; isml_numvals; i++ ) {
- sid = slap_parse_csn_sid( &mod->sml_values[i] );
-
- for ( j=0; jsi_numcsns; j++ ) {
- 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 ) {
- value_add_one( &si->si_ctxcsn, &mod->sml_values[i] );
- si->si_numcsns++;
- si->si_sids = ch_realloc( si->si_sids, si->si_numcsns *
- sizeof(int));
- si->si_sids[j] = sid;
- csn_changed = 1;
- }
- }
- ldap_pvt_thread_rdwr_wunlock( &si->si_csn_rwlock );
-
- if ( csn_changed ) {
- ldap_pvt_thread_mutex_lock( &si->si_ops_mutex );
- have_psearches = ( si->si_ops != NULL );
- ldap_pvt_thread_mutex_unlock( &si->si_ops_mutex );
-
- if ( have_psearches ) {
- for ( sm = opc->smatches; sm; sm=sm->sm_next ) {
- if ( sm->sm_op->s_op->o_abandon )
- continue;
- syncprov_qresp( opc, sm->sm_op, LDAP_SYNC_NEW_COOKIE );
- }
- }
- }
- goto leave;
- }
-
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
@@ -1743,17 +1807,64 @@ syncprov_op_response( Operation *op, Sla
sizeof(int));
si->si_sids[i] = sid;
}
-#if 0
- } else if ( !foundit ) {
- /* internal ops that aren't meant to be replicated */
- ldap_pvt_thread_rdwr_wunlock( &si->si_csn_rwlock );
- return SLAP_CB_CONTINUE;
-#endif
}
/* Don't do any processing for consumer contextCSN updates */
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;
+ int i, j, sid;
+
+ for ( i=0; isml_numvals; i++ ) {
+ sid = slap_parse_csn_sid( &mod->sml_values[i] );
+ for ( j=0; jsi_numcsns; j++ ) {
+ 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 ) {
+ value_add_one( &si->si_ctxcsn, &mod->sml_values[i] );
+ si->si_numcsns++;
+ si->si_sids = ch_realloc( si->si_sids, si->si_numcsns *
+ sizeof(int));
+ si->si_sids[j] = sid;
+ csn_changed = 1;
+ }
+ }
+ if ( csn_changed )
+ si->si_dirty = 0;
+ ldap_pvt_thread_rdwr_wunlock( &si->si_csn_rwlock );
+
+ 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;
}
@@ -1763,7 +1874,7 @@ syncprov_op_response( Operation *op, Sla
* it will deadlock
*/
if ( op->o_tag != LDAP_REQ_ADD ||
- !dn_match( &op->o_req_ndn, &op->o_bd->be_nsuffix[0] )) {
+ !dn_match( &op->o_req_ndn, &si->si_contextdn )) {
if ( si->si_chkops && si->si_numops >= si->si_chkops ) {
do_check = 1;
si->si_numops = 0;
@@ -1779,6 +1890,7 @@ syncprov_op_response( Operation *op, Sla
}
}
}
+ si->si_dirty = !csn_changed;
ldap_pvt_thread_rdwr_wunlock( &si->si_csn_rwlock );
if ( do_check ) {
@@ -1837,14 +1949,14 @@ syncprov_op_compare( Operation *op, Slap
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;
@@ -1906,6 +2018,7 @@ syncprov_op_mod( Operation *op, SlapRepl
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) +
@@ -2296,6 +2409,7 @@ syncprov_op_search( Operation *op, SlapR
BerVarray ctxcsn;
int i, *sids, numcsns;
struct berval mincsn;
+ int dirty = 0;
if ( !(op->o_sync_mode & SLAP_SYNC_REFRESH) ) return SLAP_CB_CONTINUE;
@@ -2340,6 +2454,20 @@ syncprov_op_search( Operation *op, SlapR
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 );
@@ -2357,6 +2485,7 @@ syncprov_op_search( Operation *op, SlapR
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 */
@@ -2413,7 +2542,10 @@ syncprov_op_search( Operation *op, SlapR
if ( newer < 0 )
changed = SS_CHANGED;
else if ( newer > 0 ) {
- /* our state is older, tell consumer nothing */
+ /* 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;
@@ -2424,7 +2556,6 @@ syncprov_op_search( Operation *op, SlapR
ldap_pvt_thread_mutex_unlock( &si->si_ops_mutex );
ch_free( sop );
}
- rs->sr_err = LDAP_SUCCESS;
rs->sr_ctrls = NULL;
send_ldap_result( op, rs );
return rs->sr_err;
@@ -2434,7 +2565,7 @@ syncprov_op_search( Operation *op, SlapR
if ( changed )
break;
}
- if ( !changed ) {
+ if ( !changed && !dirty ) {
do_present = 0;
no_change: if ( !(op->o_sync_mode & SLAP_SYNC_PERSIST) ) {
LDAPControl *ctrls[2];
@@ -2462,7 +2593,7 @@ no_change: if ( !(op->o_sync_mode & SLA
/* 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 && ber_bvcmp( &mincsn, &sl->sl_head->se_csn ) >= 0 ) {
do_present = 0;
/* mutex is unlocked in playlog */
syncprov_playlog( op, rs, sl, srs, ctxcsn, numcsns, sids );
@@ -2479,8 +2610,9 @@ no_change: if ( !(op->o_sync_mode & SLA
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 );
@@ -2500,8 +2632,7 @@ no_change: if ( !(op->o_sync_mode & SLA
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 {
@@ -2518,7 +2649,7 @@ shortcut:
}
/* 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 );
@@ -2534,10 +2665,14 @@ shortcut:
#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 */
@@ -2559,7 +2694,7 @@ shortcut:
* 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 );
@@ -2583,7 +2718,7 @@ syncprov_operational(
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 )) {
@@ -2800,9 +2935,7 @@ sp_cf_gen(ConfigArgs *c)
}
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_num = 0;
sl->sl_head = sl->sl_tail = NULL;
ldap_pvt_thread_mutex_init( &sl->sl_mutex );
@@ -2870,13 +3003,19 @@ syncprov_db_open(
}
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 ) {
@@ -2900,7 +3039,7 @@ syncprov_db_open(
/* 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 )) {
@@ -2949,7 +3088,7 @@ syncprov_db_close(
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;
@@ -3013,6 +3152,7 @@ syncprov_db_destroy(
se = se_next;
}
+ ldap_pvt_thread_mutex_destroy(&si->si_logs->sl_mutex);
ch_free( si->si_logs );
}
if ( si->si_ctxcsn )