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synced 2024-12-21 03:10:25 +08:00
ITS#3671 free all locks before calling send_search_*, queue entries if
the connection is busy. Probably need to set a queue limit here and abandon the psearch if the limit is reached.
This commit is contained in:
Howard Chu
parent
b92387bb1c
commit
895b74cb1d
@ -131,6 +131,7 @@ typedef struct opcookie {
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struct berval sndn;
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struct berval suuid; /* UUID of entry */
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struct berval sctxcsn;
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syncops *shead; /* head of si_ops when we started */
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int sreference; /* Is the entry a reference? */
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} opcookie;
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@ -660,7 +661,7 @@ syncprov_findcsn( Operation *op, int mode )
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return rc;
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}
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/* Queue a persistent search response if still in Refresh stage */
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/* Queue a persistent search response */
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static int
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syncprov_qresp( opcookie *opc, syncops *so, int mode )
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{
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@ -670,13 +671,18 @@ syncprov_qresp( opcookie *opc, syncops *so, int mode )
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opc->sdn.bv_len + 1 + opc->sndn.bv_len + 1 + opc->sctxcsn.bv_len + 1 );
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sr->s_next = NULL;
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sr->s_dn.bv_val = (char *)(sr + 1);
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sr->s_dn.bv_len = opc->sdn.bv_len;
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sr->s_mode = mode;
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sr->s_isreference = opc->sreference;
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sr->s_ndn.bv_val = lutil_strcopy( sr->s_dn.bv_val, opc->sdn.bv_val );
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sr->s_ndn.bv_len = opc->sndn.bv_len;
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*(sr->s_ndn.bv_val++) = '\0';
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sr->s_uuid.bv_val = lutil_strcopy( sr->s_ndn.bv_val, opc->sndn.bv_val );
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sr->s_uuid.bv_len = opc->suuid.bv_len;
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*(sr->s_uuid.bv_val++) = '\0';
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sr->s_csn.bv_val = lutil_strcopy( sr->s_uuid.bv_val, opc->suuid.bv_val );
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sr->s_csn.bv_len = opc->sctxcsn.bv_len;
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strcpy( sr->s_csn.bv_val, opc->sctxcsn.bv_val );
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if ( !so->s_res ) {
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so->s_res = sr;
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@ -688,9 +694,58 @@ syncprov_qresp( opcookie *opc, syncops *so, int mode )
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return LDAP_SUCCESS;
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}
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/* Play back queued responses */
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static int
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syncprov_sendresp( Operation *op, opcookie *opc, syncops *so, Entry **e, int mode, int queue );
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static int
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syncprov_qplay( Operation *op, slap_overinst *on, syncops *so )
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{
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syncres *sr, *srnext;
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Entry *e;
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opcookie opc;
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int rc;
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opc.son = on;
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op->o_bd->bd_info = (BackendInfo *)on->on_info;
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for (sr = so->s_res; sr; sr=srnext) {
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int rc;
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srnext = sr->s_next;
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opc.sdn = sr->s_dn;
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opc.sndn = sr->s_ndn;
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opc.suuid = sr->s_uuid;
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opc.sctxcsn = sr->s_csn;
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opc.sreference = sr->s_isreference;
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e = NULL;
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if ( sr->s_mode != LDAP_SYNC_DELETE ) {
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rc = be_entry_get_rw( op, &opc.sndn, NULL, NULL, 0, &e );
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if ( rc ) {
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ch_free( sr );
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so->s_res = srnext;
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continue;
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}
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}
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rc = syncprov_sendresp( op, &opc, so, &e, sr->s_mode, 0 );
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if ( e ) {
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be_entry_release_rw( op, e, 0 );
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}
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if ( rc )
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break;
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ch_free( sr );
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so->s_res = srnext;
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}
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op->o_bd->bd_info = (BackendInfo *)on;
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if ( !so->s_res )
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so->s_restail = NULL;
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return rc;
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}
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/* Send a persistent search response */
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static int
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syncprov_sendresp( Operation *op, opcookie *opc, syncops *so, Entry *e, int mode, int queue )
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syncprov_sendresp( Operation *op, opcookie *opc, syncops *so, Entry **e, int mode, int queue )
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{
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slap_overinst *on = opc->son;
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syncprov_info_t *si = on->on_bi.bi_private;
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@ -708,12 +763,30 @@ syncprov_sendresp( Operation *op, opcookie *opc, syncops *so, Entry *e, int mode
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sop.o_tmpmemctx = op->o_tmpmemctx;
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sop.o_bd = op->o_bd;
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sop.o_controls = op->o_controls;
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sop.o_private = op->o_private;
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if ( queue && (so->s_flags & PS_IS_REFRESHING) ) {
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/* If queueing is allowed */
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if ( queue ) {
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ldap_pvt_thread_mutex_lock( &so->s_mutex );
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if ( so->s_flags & PS_IS_REFRESHING )
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/* If we're still in refresh mode, must queue */
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if (so->s_flags & PS_IS_REFRESHING) {
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return syncprov_qresp( opc, so, mode );
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}
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/* If connection is free but queue is non-empty,
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* try to flush the queue.
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*/
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if ( so->s_res ) {
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rs.sr_err = syncprov_qplay( &sop, on, so );
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}
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/* If the connection is busy, must queue */
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if ( sop.o_conn->c_writewaiter || rs.sr_err == LDAP_BUSY ) {
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return syncprov_qresp( opc, so, mode );
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}
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ldap_pvt_thread_mutex_unlock( &so->s_mutex );
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} else {
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/* Queueing not allowed and conn is busy, give up */
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if ( sop.o_conn->c_writewaiter )
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return LDAP_BUSY;
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}
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ctrls[1] = NULL;
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@ -725,20 +798,30 @@ syncprov_sendresp( Operation *op, opcookie *opc, syncops *so, Entry *e, int mode
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rs.sr_err = syncprov_state_ctrl( &sop, &rs, &e_uuid,
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mode, ctrls, 0, 1, &cookie );
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rs.sr_entry = e;
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rs.sr_ctrls = ctrls;
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op->o_bd->bd_info = (BackendInfo *)on->on_info;
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switch( mode ) {
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case LDAP_SYNC_ADD:
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rs.sr_entry = *e;
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if ( rs.sr_entry->e_private )
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rs.sr_flags = REP_ENTRY_MUSTRELEASE;
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if ( opc->sreference ) {
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rs.sr_ref = get_entry_referrals( &sop, e );
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rs.sr_ref = get_entry_referrals( &sop, rs.sr_entry );
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send_search_reference( &sop, &rs );
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ber_bvarray_free( rs.sr_ref );
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if ( !rs.sr_entry )
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*e = NULL;
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break;
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}
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/* fallthru */
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case LDAP_SYNC_MODIFY:
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rs.sr_entry = *e;
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if ( rs.sr_entry->e_private )
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rs.sr_flags = REP_ENTRY_MUSTRELEASE;
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rs.sr_attrs = sop.ors_attrs;
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send_search_entry( &sop, &rs );
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if ( !rs.sr_entry )
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*e = NULL;
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break;
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case LDAP_SYNC_DELETE:
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e_uuid.e_attrs = NULL;
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@ -757,6 +840,7 @@ syncprov_sendresp( Operation *op, opcookie *opc, syncops *so, Entry *e, int mode
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assert(0);
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}
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op->o_tmpfree( rs.sr_ctrls[0], op->o_tmpmemctx );
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op->o_private = sop.o_private;
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rs.sr_ctrls = NULL;
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return rs.sr_err;
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}
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@ -902,8 +986,11 @@ syncprov_matchops( Operation *op, opcookie *opc, int saveit )
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ber_dupbv_x( &opc->suuid, &a->a_nvals[0], op->o_tmpmemctx );
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}
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if (saveit) {
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ldap_pvt_thread_mutex_lock( &si->si_ops_mutex );
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for (ss = si->si_ops, sprev = (syncops *)&si->si_ops; ss;
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opc->shead = si->si_ops;
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}
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for (ss = opc->shead, sprev = (syncops *)&si->si_ops; ss;
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sprev = ss, ss=snext)
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{
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syncmatches *sm;
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@ -951,7 +1038,7 @@ syncprov_matchops( Operation *op, opcookie *opc, int saveit )
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opc->smatches = sm;
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} else {
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/* if found send UPDATE else send ADD */
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syncprov_sendresp( op, opc, ss, e,
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syncprov_sendresp( op, opc, ss, &e,
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found ? LDAP_SYNC_MODIFY : LDAP_SYNC_ADD, 1 );
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}
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} else if ( !saveit && found ) {
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@ -959,9 +1046,10 @@ syncprov_matchops( Operation *op, opcookie *opc, int saveit )
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syncprov_sendresp( op, opc, ss, NULL, LDAP_SYNC_DELETE, 1 );
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}
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}
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if (saveit)
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ldap_pvt_thread_mutex_unlock( &si->si_ops_mutex );
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done:
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if ( op->o_tag != LDAP_REQ_ADD ) {
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if ( op->o_tag != LDAP_REQ_ADD && e ) {
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op->o_bd->bd_info = (BackendInfo *)on->on_info;
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be_entry_release_rw( op, e, 0 );
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op->o_bd->bd_info = (BackendInfo *)on;
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@ -1308,14 +1396,12 @@ syncprov_op_response( Operation *op, SlapReply *rs )
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/* for each match in opc->smatches:
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* send DELETE msg
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*/
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ldap_pvt_thread_mutex_lock( &si->si_ops_mutex );
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for ( sm = opc->smatches; sm; sm=sm->sm_next ) {
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if ( sm->sm_op->s_op->o_abandon )
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continue;
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syncprov_sendresp( op, opc, sm->sm_op, NULL,
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LDAP_SYNC_DELETE, 1 );
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}
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ldap_pvt_thread_mutex_unlock( &si->si_ops_mutex );
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break;
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}
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}
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@ -1470,7 +1556,6 @@ syncprov_op_mod( Operation *op, SlapReply *rs )
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if (( si->si_ops || si->si_logs ) && op->o_tag != LDAP_REQ_ADD )
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syncprov_matchops( op, opc, 1 );
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return SLAP_CB_CONTINUE;
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}
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@ -1633,41 +1718,9 @@ syncprov_search_response( Operation *op, SlapReply *rs )
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&cookie, 1, NULL, 0 );
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/* Flush any queued persist messages */
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if ( ss->ss_so->s_res ) {
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syncres *sr, *srnext;
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Entry *e;
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opcookie opc;
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opc.son = on;
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ldap_pvt_thread_mutex_lock( &ss->ss_so->s_mutex );
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locked = 1;
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for (sr = ss->ss_so->s_res; sr; sr=srnext) {
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int rc = LDAP_SUCCESS;
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srnext = sr->s_next;
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opc.sdn = sr->s_dn;
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opc.sndn = sr->s_ndn;
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opc.suuid = sr->s_uuid;
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opc.sctxcsn = sr->s_csn;
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opc.sreference = sr->s_isreference;
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e = NULL;
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if ( sr->s_mode != LDAP_SYNC_DELETE ) {
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op->o_bd->bd_info = (BackendInfo *)on->on_info;
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rc = be_entry_get_rw( op, &opc.sndn, NULL, NULL, 0, &e );
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op->o_bd->bd_info = (BackendInfo *)on;
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}
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if ( rc == LDAP_SUCCESS )
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syncprov_sendresp( op, &opc, ss->ss_so, e,
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sr->s_mode, 0 );
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if ( e ) {
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op->o_bd->bd_info = (BackendInfo *)on->on_info;
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be_entry_release_rw( op, e, 0 );
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op->o_bd->bd_info = (BackendInfo *)on;
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}
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ch_free( sr );
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}
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ss->ss_so->s_res = NULL;
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ss->ss_so->s_restail = NULL;
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syncprov_qplay( op, on, ss->ss_so );
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}
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/* Turn off the refreshing flag */
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