X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=servers%2Fslapd%2Foverlays%2Fpcache.c;h=450706c12751e13454798016afecc6057b54fb95;hb=2c3aaca62f060cd276cdeb6ad7da617962234aa3;hp=b81843e39d3d7b91cd134cc3298162265d737c5d;hpb=ca1aed557b1fa81b3d11de1da32f0a00c5f5cff8;p=openldap
diff --git a/servers/slapd/overlays/pcache.c b/servers/slapd/overlays/pcache.c
index b81843e39d..450706c127 100644
--- a/servers/slapd/overlays/pcache.c
+++ b/servers/slapd/overlays/pcache.c
@@ -1,7 +1,7 @@
/* $OpenLDAP$ */
/* This work is part of OpenLDAP Software .
*
- * Copyright 2003-2007 The OpenLDAP Foundation.
+ * Copyright 2003-2008 The OpenLDAP Foundation.
* Portions Copyright 2003 IBM Corporation.
* Portions Copyright 2003 Symas Corporation.
* All rights reserved.
@@ -72,12 +72,14 @@ typedef struct cached_query_s {
Qbase *qbase;
int scope;
struct berval q_uuid; /* query identifier */
+ int q_sizelimit;
struct query_template_s *qtemp; /* template of the query */
- time_t expiry_time; /* time till the query is considered valid */
+ time_t expiry_time; /* time till the query is considered valid */
struct cached_query_s *next; /* next query in the template */
struct cached_query_s *prev; /* previous query in the template */
- struct cached_query_s *lru_up; /* previous query in the LRU list */
- struct cached_query_s *lru_down; /* next query in the LRU list */
+ struct cached_query_s *lru_up; /* previous query in the LRU list */
+ struct cached_query_s *lru_down; /* next query in the LRU list */
+ ldap_pvt_thread_rdwr_t rwlock;
} CachedQuery;
/*
@@ -127,17 +129,36 @@ typedef struct query_template_s {
int no_of_queries; /* Total number of queries in the template */
time_t ttl; /* TTL for the queries of this template */
time_t negttl; /* TTL for negative results */
+ time_t limitttl; /* TTL for sizelimit exceeding results */
struct attr_set t_attrs; /* filter attrs + attr_set */
} QueryTemplate;
+typedef enum {
+ PC_IGNORE = 0,
+ PC_POSITIVE,
+ PC_NEGATIVE,
+ PC_SIZELIMIT
+} pc_caching_reason_t;
+
+static const char *pc_caching_reason_str[] = {
+ "IGNORE",
+ "POSITIVE",
+ "NEGATIVE",
+ "SIZELIMIT",
+
+ NULL
+};
+
struct query_manager_s;
/* prototypes for functions for 1) query containment
* 2) query addition, 3) cache replacement
*/
-typedef CachedQuery * (QCfunc)(Operation *op, struct query_manager_s*, Query*, QueryTemplate*);
-typedef CachedQuery * (AddQueryfunc)(Operation *op, struct query_manager_s*, Query*, QueryTemplate*, int positive);
-typedef void (CRfunc)(struct query_manager_s*, struct berval * );
+typedef CachedQuery *(QCfunc)(Operation *op, struct query_manager_s*,
+ Query*, QueryTemplate*);
+typedef CachedQuery *(AddQueryfunc)(Operation *op, struct query_manager_s*,
+ Query*, QueryTemplate*, pc_caching_reason_t, int wlock);
+typedef void (CRfunc)(struct query_manager_s*, struct berval*);
/* LDAP query cache */
typedef struct query_manager_s {
@@ -164,15 +185,16 @@ typedef struct cache_manager_s {
int numattrsets; /* number of attribute sets */
int cur_entries; /* current number of entries cached */
int max_entries; /* max number of entries cached */
- int num_entries_limit; /* max # of entries in a cacheable query */
+ int num_entries_limit; /* max # of entries in a cacheable query */
char response_cb; /* install the response callback
* at the tail of the callback list */
#define PCACHE_RESPONSE_CB_HEAD 0
#define PCACHE_RESPONSE_CB_TAIL 1
+ char defer_db_open; /* defer open for online add */
time_t cc_period; /* interval between successive consistency checks (sec) */
- int cc_paused;
+ int cc_paused;
void *cc_arg;
ldap_pvt_thread_mutex_t cache_mutex;
@@ -193,7 +215,7 @@ static struct {
} as[] = {
{ "( 1.3.6.1.4.1.4203.666.11.9.1.1 "
"NAME 'queryId' "
- "DESC 'List of queries the entry belongs to' "
+ "DESC 'ID of query the entry belongs to, formatted as a UUID' "
"EQUALITY octetStringMatch "
"SYNTAX 1.3.6.1.4.1.1466.115.121.1.40{64} "
"NO-USER-MODIFICATION "
@@ -225,7 +247,8 @@ add_query(
query_manager* qm,
Query* query,
QueryTemplate *templ,
- int positive);
+ pc_caching_reason_t why,
+ int wlock);
static int
remove_query_data(
@@ -452,7 +475,7 @@ url2query(
goto error;
}
- cq = add_query( op, qm, &query, qt, 1 );
+ cq = add_query( op, qm, &query, qt, PC_POSITIVE, 0 );
if ( cq != NULL ) {
cq->expiry_time = expiry_time;
cq->q_uuid = uuid;
@@ -1093,6 +1116,10 @@ query_containment(Operation *op, query_manager *qm,
qc = find_filter( op, qbptr->scopes[tscope],
query->filter, first );
if ( qc ) {
+ if ( qc->q_sizelimit ) {
+ ldap_pvt_thread_rdwr_runlock(&templa->t_rwlock);
+ return NULL;
+ }
ldap_pvt_thread_mutex_lock(&qm->lru_mutex);
if (qm->lru_top != qc) {
remove_query(qm, qc);
@@ -1128,35 +1155,57 @@ free_query (CachedQuery* qc)
}
-/* Add query to query cache */
+/* Add query to query cache, the returned Query is locked for writing */
static CachedQuery *
add_query(
Operation *op,
query_manager* qm,
Query* query,
QueryTemplate *templ,
- int positive)
+ pc_caching_reason_t why,
+ int wlock)
{
CachedQuery* new_cached_query = (CachedQuery*) ch_malloc(sizeof(CachedQuery));
Qbase *qbase, qb;
Filter *first;
int rc;
+ time_t ttl = 0;;
new_cached_query->qtemp = templ;
BER_BVZERO( &new_cached_query->q_uuid );
- if ( positive ) {
- new_cached_query->expiry_time = slap_get_time() + templ->ttl;
- } else {
- new_cached_query->expiry_time = slap_get_time() + templ->negttl;
+ new_cached_query->q_sizelimit = 0;
+
+ switch ( why ) {
+ case PC_POSITIVE:
+ ttl = templ->ttl;
+ break;
+
+ case PC_NEGATIVE:
+ ttl = templ->negttl;
+ break;
+
+ case PC_SIZELIMIT:
+ ttl = templ->limitttl;
+ break;
+
+ default:
+ assert( 0 );
+ break;
}
+ new_cached_query->expiry_time = slap_get_time() + ttl;
new_cached_query->lru_up = NULL;
new_cached_query->lru_down = NULL;
- Debug( pcache_debug, "Added query expires at %ld\n",
- (long) new_cached_query->expiry_time, 0, 0 );
+ Debug( pcache_debug, "Added query expires at %ld (%s)\n",
+ (long) new_cached_query->expiry_time,
+ pc_caching_reason_str[ why ], 0 );
new_cached_query->scope = query->scope;
new_cached_query->filter = query->filter;
new_cached_query->first = first = filter_first( query->filter );
+
+ ldap_pvt_thread_rdwr_init(&new_cached_query->rwlock);
+ if (wlock)
+ ldap_pvt_thread_rdwr_wlock(&new_cached_query->rwlock);
qb.base = query->base;
@@ -1286,7 +1335,7 @@ cache_replacement(query_manager* qm, struct berval *result)
ldap_pvt_thread_mutex_unlock(&qm->lru_mutex);
*result = bottom->q_uuid;
- bottom->q_uuid.bv_val = NULL;
+ BER_BVZERO( &bottom->q_uuid );
Debug( pcache_debug, "Lock CR index = %p\n", (void *) temp, 0, 0 );
ldap_pvt_thread_rdwr_wlock(&temp->t_rwlock);
@@ -1319,8 +1368,7 @@ remove_func (
attr = attr_find( rs->sr_entry->e_attrs, ad_queryId );
if ( attr == NULL ) return 0;
- for ( count = 0; !BER_BVISNULL( &attr->a_vals[count] ); count++ )
- ;
+ count = attr->a_numvals;
assert( count > 0 );
qi = op->o_tmpalloc( sizeof( struct query_info ), op->o_tmpmemctx );
qi->next = op->o_callback->sc_private;
@@ -1339,11 +1387,7 @@ remove_query_data(
{
struct query_info *qi, *qnext;
char filter_str[ LDAP_LUTIL_UUIDSTR_BUFSIZE + STRLENOF( "(queryId=)" ) ];
-#ifdef LDAP_COMP_MATCH
- AttributeAssertion ava = { NULL, BER_BVNULL, NULL };
-#else
- AttributeAssertion ava = { NULL, BER_BVNULL };
-#endif
+ AttributeAssertion ava = ATTRIBUTEASSERTION_INIT;
Filter filter = {LDAP_FILTER_EQUALITY};
SlapReply sreply = {REP_RESULT};
slap_callback cb = { NULL, remove_func, NULL, NULL };
@@ -1406,6 +1450,7 @@ remove_query_data(
mod.sml_type = ad_queryId->ad_cname;
mod.sml_values = vals;
mod.sml_nvalues = NULL;
+ mod.sml_numvals = 1;
mod.sml_next = NULL;
Debug( pcache_debug,
"REMOVING TEMP ATTR : TEMPLATE=%s\n",
@@ -1438,67 +1483,91 @@ filter2template(
int* filter_got_oc )
{
AttributeDescription *ad;
+ int len, ret;
switch ( f->f_choice ) {
case LDAP_FILTER_EQUALITY:
ad = f->f_av_desc;
- sprintf( fstr->bv_val+fstr->bv_len, "(%s=)", ad->ad_cname.bv_val );
- fstr->bv_len += ad->ad_cname.bv_len + ( sizeof("(=)") - 1 );
+ len = STRLENOF( "(=)" ) + ad->ad_cname.bv_len;
+ ret = snprintf( fstr->bv_val+fstr->bv_len, len + 1, "(%s=)", ad->ad_cname.bv_val );
+ assert( ret == len );
+ fstr->bv_len += len;
break;
case LDAP_FILTER_GE:
ad = f->f_av_desc;
- sprintf( fstr->bv_val+fstr->bv_len, "(%s>=)", ad->ad_cname.bv_val);
- fstr->bv_len += ad->ad_cname.bv_len + ( sizeof("(>=)") - 1 );
+ len = STRLENOF( "(>=)" ) + ad->ad_cname.bv_len;
+ ret = snprintf( fstr->bv_val+fstr->bv_len, len + 1, "(%s>=)", ad->ad_cname.bv_val);
+ assert( ret == len );
+ fstr->bv_len += len;
break;
case LDAP_FILTER_LE:
ad = f->f_av_desc;
- sprintf( fstr->bv_val+fstr->bv_len, "(%s<=)", ad->ad_cname.bv_val);
- fstr->bv_len += ad->ad_cname.bv_len + ( sizeof("(<=)") - 1 );
+ len = STRLENOF( "(<=)" ) + ad->ad_cname.bv_len;
+ ret = snprintf( fstr->bv_val+fstr->bv_len, len + 1, "(%s<=)", ad->ad_cname.bv_val);
+ assert( ret == len );
+ fstr->bv_len += len;
break;
case LDAP_FILTER_APPROX:
ad = f->f_av_desc;
- sprintf( fstr->bv_val+fstr->bv_len, "(%s~=)", ad->ad_cname.bv_val);
- fstr->bv_len += ad->ad_cname.bv_len + ( sizeof("(~=)") - 1 );
+ len = STRLENOF( "(~=)" ) + ad->ad_cname.bv_len;
+ ret = snprintf( fstr->bv_val+fstr->bv_len, len + 1, "(%s~=)", ad->ad_cname.bv_val);
+ assert( ret == len );
+ fstr->bv_len += len;
break;
case LDAP_FILTER_SUBSTRINGS:
ad = f->f_sub_desc;
- sprintf( fstr->bv_val+fstr->bv_len, "(%s=)", ad->ad_cname.bv_val );
- fstr->bv_len += ad->ad_cname.bv_len + ( sizeof("(=)") - 1 );
+ len = STRLENOF( "(=)" ) + ad->ad_cname.bv_len;
+ ret = snprintf( fstr->bv_val+fstr->bv_len, len + 1, "(%s=)", ad->ad_cname.bv_val );
+ assert( ret == len );
+ fstr->bv_len += len;
break;
case LDAP_FILTER_PRESENT:
ad = f->f_desc;
- sprintf( fstr->bv_val+fstr->bv_len, "(%s=*)", ad->ad_cname.bv_val );
- fstr->bv_len += ad->ad_cname.bv_len + ( sizeof("(=*)") - 1 );
+ len = STRLENOF( "(=*)" ) + ad->ad_cname.bv_len;
+ ret = snprintf( fstr->bv_val+fstr->bv_len, len + 1, "(%s=*)", ad->ad_cname.bv_val );
+ assert( ret == len );
+ fstr->bv_len += len;
break;
case LDAP_FILTER_AND:
case LDAP_FILTER_OR:
case LDAP_FILTER_NOT: {
int rc = 0;
- sprintf( fstr->bv_val+fstr->bv_len, "(%c",
- f->f_choice == LDAP_FILTER_AND ? '&' :
- f->f_choice == LDAP_FILTER_OR ? '|' : '!' );
- fstr->bv_len += sizeof("(%") - 1;
+ fstr->bv_val[fstr->bv_len++] = '(';
+ switch ( f->f_choice ) {
+ case LDAP_FILTER_AND:
+ fstr->bv_val[fstr->bv_len] = '&';
+ break;
+ case LDAP_FILTER_OR:
+ fstr->bv_val[fstr->bv_len] = '|';
+ break;
+ case LDAP_FILTER_NOT:
+ fstr->bv_val[fstr->bv_len] = '!';
+ break;
+ }
+ fstr->bv_len++;
for ( f = f->f_list; f != NULL; f = f->f_next ) {
rc = filter2template( op, f, fstr, filter_attrs, filter_cnt,
filter_got_oc );
if ( rc ) break;
}
- sprintf( fstr->bv_val+fstr->bv_len, ")" );
- fstr->bv_len += sizeof(")") - 1;
+ fstr->bv_val[fstr->bv_len++] = ')';
+ fstr->bv_val[fstr->bv_len] = '\0';
return rc;
}
default:
- strcpy( fstr->bv_val, "(?=?)" );
- fstr->bv_len += sizeof("(?=?)")-1;
+ /* a filter should at least have room for "()",
+ * an "=" and for a 1-char attr */
+ strcpy( fstr->bv_val, "(?=)" );
+ fstr->bv_len += STRLENOF("(?=)");
return -1;
}
@@ -1527,6 +1596,9 @@ struct search_info {
int max;
int over;
int count;
+ int slimit;
+ int slimit_exceeded;
+ pc_caching_reason_t caching_reason;
Entry *head, *tail;
};
@@ -1613,7 +1685,7 @@ int
pcache_remove_entries_from_cache(
Operation *op,
cache_manager *cm,
- BerVarray UUIDs )
+ BerVarray entryUUIDs )
{
Connection conn = { 0 };
OperationBuffer opbuf;
@@ -1622,11 +1694,7 @@ pcache_remove_entries_from_cache(
SlapReply rs = { REP_RESULT };
Filter f = { 0 };
char filtbuf[ LDAP_LUTIL_UUIDSTR_BUFSIZE + STRLENOF( "(entryUUID=)" ) ];
-#ifdef LDAP_COMP_MATCH
- AttributeAssertion ava = { NULL, BER_BVNULL, NULL };
-#else
- AttributeAssertion ava = { NULL, BER_BVNULL };
-#endif
+ AttributeAssertion ava = ATTRIBUTEASSERTION_INIT;
AttributeName attrs[ 2 ] = { 0 };
int s, rc;
@@ -1667,13 +1735,13 @@ pcache_remove_entries_from_cache(
sc.sc_response = fetch_queryId_cb;
op->o_callback = ≻
- for ( s = 0; !BER_BVISNULL( &UUIDs[ s ] ); s++ ) {
+ for ( s = 0; !BER_BVISNULL( &entryUUIDs[ s ] ); s++ ) {
BerVarray vals = NULL;
op->ors_filterstr.bv_len = snprintf( filtbuf, sizeof( filtbuf ),
- "(entryUUID=%s)", UUIDs[ s ].bv_val );
+ "(entryUUID=%s)", entryUUIDs[ s ].bv_val );
op->ors_filterstr.bv_val = filtbuf;
- ava.aa_value = UUIDs[ s ];
+ ava.aa_value = entryUUIDs[ s ];
rc = op->o_bd->be_search( op, &rs );
if ( rc != LDAP_SUCCESS ) {
@@ -1703,14 +1771,36 @@ pcache_remove_entries_from_cache(
}
/*
- * Call that allows to remove a set of queries from the cache
+ * Call that allows to remove a query from the cache.
+ */
+int
+pcache_remove_query_from_cache(
+ Operation *op,
+ cache_manager *cm,
+ struct berval *queryid )
+{
+ Operation op2 = *op;
+ SlapReply rs2 = { 0 };
+
+ op2.o_bd = &cm->db;
+
+ /* remove the selected query */
+ remove_query_and_data( &op2, &rs2, cm, queryid );
+
+ return LDAP_SUCCESS;
+}
+
+/*
+ * Call that allows to remove a set of queries related to an entry
+ * from the cache; if queryid is not null, the entry must belong to
+ * the query indicated by queryid.
*/
int
pcache_remove_entry_queries_from_cache(
Operation *op,
cache_manager *cm,
struct berval *ndn,
- struct berval *uuid )
+ struct berval *queryid )
{
Connection conn = { 0 };
OperationBuffer opbuf;
@@ -1719,11 +1809,7 @@ pcache_remove_entry_queries_from_cache(
SlapReply rs = { REP_RESULT };
Filter f = { 0 };
char filter_str[ LDAP_LUTIL_UUIDSTR_BUFSIZE + STRLENOF( "(queryId=)" ) ];
-#ifdef LDAP_COMP_MATCH
- AttributeAssertion ava = { NULL, BER_BVNULL, NULL };
-#else
- AttributeAssertion ava = { NULL, BER_BVNULL };
-#endif
+ AttributeAssertion ava = ATTRIBUTEASSERTION_INIT;
AttributeName attrs[ 2 ] = { 0 };
int rc;
@@ -1743,7 +1829,7 @@ pcache_remove_entry_queries_from_cache(
memset( &op->oq_search, 0, sizeof( op->oq_search ) );
op->ors_scope = LDAP_SCOPE_BASE;
op->ors_deref = LDAP_DEREF_NEVER;
- if ( uuid == NULL || BER_BVISNULL( uuid ) ) {
+ if ( queryid == NULL || BER_BVISNULL( queryid ) ) {
BER_BVSTR( &op->ors_filterstr, "(objectClass=*)" );
f.f_choice = LDAP_FILTER_PRESENT;
f.f_desc = slap_schema.si_ad_objectClass;
@@ -1751,11 +1837,11 @@ pcache_remove_entry_queries_from_cache(
} else {
op->ors_filterstr.bv_len = snprintf( filter_str,
sizeof( filter_str ), "(%s=%s)",
- ad_queryId->ad_cname.bv_val, uuid->bv_val );
+ ad_queryId->ad_cname.bv_val, queryid->bv_val );
f.f_choice = LDAP_FILTER_EQUALITY;
f.f_ava = &ava;
f.f_av_desc = ad_queryId;
- f.f_av_value = *uuid;
+ f.f_av_value = *queryid;
}
op->ors_filter = &f;
op->ors_slimit = 1;
@@ -1815,14 +1901,19 @@ cache_entries(
Entry *e;
struct berval crp_uuid;
char uuidbuf[ LDAP_LUTIL_UUIDSTR_BUFSIZE ];
- Operation op_tmp = *op;
+ Operation *op_tmp;
+ Connection conn = {0};
+ OperationBuffer opbuf;
+ void *thrctx = ldap_pvt_thread_pool_context();
query_uuid->bv_len = lutil_uuidstr(uuidbuf, sizeof(uuidbuf));
ber_str2bv(uuidbuf, query_uuid->bv_len, 1, query_uuid);
- op_tmp.o_bd = &cm->db;
- op_tmp.o_dn = cm->db.be_rootdn;
- op_tmp.o_ndn = cm->db.be_rootndn;
+ connection_fake_init2( &conn, &opbuf, thrctx, 0 );
+ op_tmp = &opbuf.ob_op;
+ op_tmp->o_bd = &cm->db;
+ op_tmp->o_dn = cm->db.be_rootdn;
+ op_tmp->o_ndn = cm->db.be_rootndn;
Debug( pcache_debug, "UUID for query being added = %s\n",
uuidbuf, 0, 0 );
@@ -1832,10 +1923,10 @@ cache_entries(
e->e_private = NULL;
while ( cm->cur_entries > (cm->max_entries) ) {
BER_BVZERO( &crp_uuid );
- remove_query_and_data( &op_tmp, rs, cm, &crp_uuid );
+ remove_query_and_data( op_tmp, rs, cm, &crp_uuid );
}
- return_val = merge_entry(&op_tmp, e, query_uuid);
+ return_val = merge_entry(op_tmp, e, query_uuid);
ldap_pvt_thread_mutex_lock(&cm->cache_mutex);
cm->cur_entries += return_val;
Debug( pcache_debug,
@@ -1852,32 +1943,18 @@ static int
pcache_op_cleanup( Operation *op, SlapReply *rs ) {
slap_callback *cb = op->o_callback;
struct search_info *si = cb->sc_private;
- if ( si->save_attrs != NULL ) {
- rs->sr_attrs = si->save_attrs;
- op->ors_attrs = si->save_attrs;
- }
- op->o_callback = op->o_callback->sc_next;
- op->o_tmpfree( cb, op->o_tmpmemctx );
- return SLAP_CB_CONTINUE;
-}
-
-static int
-pcache_response(
- Operation *op,
- SlapReply *rs )
-{
- struct search_info *si = op->o_callback->sc_private;
slap_overinst *on = si->on;
cache_manager *cm = on->on_bi.bi_private;
query_manager* qm = cm->qm;
- if ( si->save_attrs != NULL ) {
- rs->sr_attrs = si->save_attrs;
- op->ors_attrs = si->save_attrs;
- }
-
if ( rs->sr_type == REP_SEARCH ) {
Entry *e;
+
+ /* don't return more entries than requested by the client */
+ if ( si->slimit && rs->sr_nentries >= si->slimit ) {
+ si->slimit_exceeded = 1;
+ }
+
/* If we haven't exceeded the limit for this query,
* build a chain of answers to store. If we hit the
* limit, empty the chain and ignore the rest.
@@ -1889,6 +1966,7 @@ pcache_response(
if ( !si->head ) si->head = e;
if ( si->tail ) si->tail->e_private = e;
si->tail = e;
+
} else {
si->over = 1;
si->count = 0;
@@ -1901,16 +1979,47 @@ pcache_response(
}
}
- } else if ( rs->sr_type == REP_RESULT ) {
- if ( si->count ||
- ( si->qtemp->negttl && !si->count && !si->over &&
- rs->sr_err == LDAP_SUCCESS )) {
- CachedQuery *qc = qm->addfunc(op, qm, &si->query, si->qtemp,
- si->count);
+ }
+
+ if ( rs->sr_type == REP_RESULT ||
+ op->o_abandon || rs->sr_err == SLAPD_ABANDON )
+ {
+ if ( si->save_attrs != NULL ) {
+ rs->sr_attrs = si->save_attrs;
+ op->ors_attrs = si->save_attrs;
+ }
+ if ( (op->o_abandon || rs->sr_err == SLAPD_ABANDON) &&
+ si->caching_reason == PC_IGNORE ) {
+ filter_free( si->query.filter );
+ if ( si->count ) {
+ /* duplicate query, free it */
+ Entry *e;
+ for (;si->head; si->head=e) {
+ e = si->head->e_private;
+ si->head->e_private = NULL;
+ entry_free(si->head);
+ }
+ }
+ op->o_callback = op->o_callback->sc_next;
+ op->o_tmpfree( cb, op->o_tmpmemctx );
+ } else if ( si->caching_reason != PC_IGNORE ) {
+ CachedQuery *qc = qm->addfunc(op, qm, &si->query,
+ si->qtemp, si->caching_reason, 1 );
if ( qc != NULL ) {
- if ( si->count )
+ switch ( si->caching_reason ) {
+ case PC_POSITIVE:
cache_entries( op, rs, &qc->q_uuid );
+ break;
+
+ case PC_SIZELIMIT:
+ qc->q_sizelimit = rs->sr_nentries;
+ break;
+ default:
+ assert( 0 );
+ break;
+ }
+ ldap_pvt_thread_rdwr_wunlock(&qc->rwlock);
ldap_pvt_thread_mutex_lock(&cm->cache_mutex);
cm->num_cached_queries++;
Debug( pcache_debug, "STORED QUERIES = %lu\n",
@@ -1928,6 +2037,7 @@ pcache_response(
}
ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
}
+
} else if ( si->count ) {
/* duplicate query, free it */
Entry *e;
@@ -1937,12 +2047,57 @@ pcache_response(
entry_free(si->head);
}
}
+
} else {
filter_free( si->query.filter );
}
+ }
+
+ return SLAP_CB_CONTINUE;
+}
- op->o_callback->sc_cleanup = pcache_op_cleanup;
+static int
+pcache_response(
+ Operation *op,
+ SlapReply *rs )
+{
+ struct search_info *si = op->o_callback->sc_private;
+
+ if ( si->save_attrs != NULL ) {
+ rs->sr_attrs = si->save_attrs;
+ op->ors_attrs = si->save_attrs;
}
+
+ if ( rs->sr_type == REP_SEARCH ) {
+ /* don't return more entries than requested by the client */
+ if ( si->slimit_exceeded ) {
+ return 0;
+ }
+
+ } else if ( rs->sr_type == REP_RESULT ) {
+
+ if ( si->count ) {
+ if ( rs->sr_err == LDAP_SUCCESS ) {
+ si->caching_reason = PC_POSITIVE;
+
+ } else if ( rs->sr_err == LDAP_SIZELIMIT_EXCEEDED
+ && si->qtemp->limitttl )
+ {
+ si->caching_reason = PC_SIZELIMIT;
+ }
+
+ } else if ( si->qtemp->negttl && !si->count && !si->over &&
+ rs->sr_err == LDAP_SUCCESS )
+ {
+ si->caching_reason = PC_NEGATIVE;
+ }
+
+
+ if ( si->slimit_exceeded ) {
+ rs->sr_err = LDAP_SIZELIMIT_EXCEEDED;
+ }
+ }
+
return SLAP_CB_CONTINUE;
}
@@ -2060,6 +2215,13 @@ pcache_op_privdb(
return SLAP_CB_CONTINUE;
}
+ /* The cache DB isn't open yet */
+ if ( cm->defer_db_open ) {
+ send_ldap_error( op, rs, LDAP_UNAVAILABLE,
+ "pcachePrivDB: cacheDB not available" );
+ return rs->sr_err;
+ }
+
/* FIXME: might be a little bit exaggerated... */
if ( !be_isroot( op ) ) {
save_cb = op->o_callback;
@@ -2075,6 +2237,7 @@ pcache_op_privdb(
type = slap_req2op( op->o_tag );
if ( type != SLAP_OP_LAST ) {
BI_op_func **func;
+ int rc;
/* execute, if possible */
func = &cm->db.be_bind;
@@ -2083,7 +2246,10 @@ pcache_op_privdb(
op2.o_bd = &cm->db;
- return func[ type ]( &op2, rs );
+ rc = func[ type ]( &op2, rs );
+ if ( type == SLAP_OP_BIND && rc == LDAP_SUCCESS ) {
+ op->o_conn->c_authz_cookie = cm->db.be_private;
+ }
}
}
@@ -2128,6 +2294,13 @@ pcache_op_search(
}
#endif /* PCACHE_CONTROL_PRIVDB */
+ /* The cache DB isn't open yet */
+ if ( cm->defer_db_open ) {
+ send_ldap_error( op, rs, LDAP_UNAVAILABLE,
+ "pcachePrivDB: cacheDB not available" );
+ return rs->sr_err;
+ }
+
tempstr.bv_val = op->o_tmpalloc( op->ors_filterstr.bv_len+1, op->o_tmpmemctx );
tempstr.bv_len = 0;
if ( filter2template( op, op->ors_filter, &tempstr, &filter_attrs,
@@ -2176,6 +2349,7 @@ pcache_op_search(
Debug( pcache_debug, "QUERY ANSWERABLE\n", 0, 0, 0 );
op->o_tmpfree( filter_attrs, op->o_tmpmemctx );
+ ldap_pvt_thread_rdwr_rlock(&answerable->rwlock);
if ( BER_BVISNULL( &answerable->q_uuid )) {
/* No entries cached, just an empty result set */
i = rs->sr_err = 0;
@@ -2185,6 +2359,7 @@ pcache_op_search(
op->o_callback = NULL;
i = cm->db.bd_info->bi_op_search( op, rs );
}
+ ldap_pvt_thread_rdwr_runlock(&answerable->rwlock);
ldap_pvt_thread_rdwr_runlock(&qtemp->t_rwlock);
op->o_bd = save_bd;
op->o_callback = save_cb;
@@ -2219,7 +2394,7 @@ pcache_op_search(
cb = op->o_tmpalloc( sizeof(*cb) + sizeof(*si), op->o_tmpmemctx );
cb->sc_response = pcache_response;
- cb->sc_cleanup = NULL;
+ cb->sc_cleanup = pcache_op_cleanup;
cb->sc_private = (cb+1);
si = cb->sc_private;
si->on = on;
@@ -2228,6 +2403,13 @@ pcache_op_search(
si->max = cm->num_entries_limit ;
si->over = 0;
si->count = 0;
+ si->slimit = 0;
+ si->slimit_exceeded = 0;
+ si->caching_reason = PC_IGNORE;
+ if ( op->ors_slimit && op->ors_slimit < cm->num_entries_limit ) {
+ si->slimit = op->ors_slimit;
+ op->ors_slimit = cm->num_entries_limit;
+ }
si->head = NULL;
si->tail = NULL;
si->save_attrs = op->ors_attrs;
@@ -2341,7 +2523,7 @@ consistency_check(
op->o_dn = cm->db.be_rootdn;
op->o_ndn = cm->db.be_rootndn;
- cm->cc_arg = arg;
+ cm->cc_arg = arg;
for (templ = qm->templates; templ; templ=templ->qmnext) {
query = templ->query_last;
@@ -2428,9 +2610,10 @@ static ConfigTable pccfg[] = {
"DESC 'A set of attributes to cache' "
"SYNTAX OMsDirectoryString )", NULL, NULL },
{ "proxytemplate", "filter> ca_private;
+ return pcache_db_open2( on, &c->reply );
+}
+
static int
pc_ldadd( CfEntryInfo *p, Entry *e, ConfigArgs *ca )
{
@@ -2479,6 +2680,12 @@ pc_ldadd( CfEntryInfo *p, Entry *e, ConfigArgs *ca )
on = (slap_overinst *)p->ce_bi;
cm = on->on_bi.bi_private;
ca->be = &cm->db;
+ /* Defer open if this is an LDAPadd */
+ if ( CONFIG_ONLINE_ADD( ca ))
+ ca->cleanup = pc_ldadd_cleanup;
+ else
+ cm->defer_db_open = 0;
+ ca->ca_private = on;
return LDAP_SUCCESS;
}
@@ -2491,9 +2698,14 @@ pc_cfadd( Operation *op, SlapReply *rs, Entry *p, ConfigArgs *ca )
struct berval bv;
/* FIXME: should not hardcode "olcDatabase" here */
- bv.bv_len = sprintf( ca->cr_msg, "olcDatabase=%s", cm->db.bd_info->bi_type );
+ bv.bv_len = snprintf( ca->cr_msg, sizeof( ca->cr_msg ),
+ "olcDatabase=%s", cm->db.bd_info->bi_type );
+ if ( bv.bv_len < 0 || bv.bv_len >= sizeof( ca->cr_msg ) ) {
+ return -1;
+ }
bv.bv_val = ca->cr_msg;
ca->be = &cm->db;
+ cm->defer_db_open = 0;
/* We can only create this entry if the database is table-driven
*/
@@ -2553,17 +2765,14 @@ pc_cf_gen( ConfigArgs *c )
break;
case PC_TEMP:
for (temp=qm->templates; temp; temp=temp->qmnext) {
- if ( temp->negttl ) {
- bv.bv_len = snprintf( c->cr_msg, sizeof( c->cr_msg ),
- " %d %ld %ld",
- temp->attr_set_index,
- temp->ttl,
- temp->negttl );
- } else {
- bv.bv_len = snprintf( c->cr_msg, sizeof( c->cr_msg ), " %d %ld",
- temp->attr_set_index,
- temp->ttl );
- }
+ /* HEADS-UP: always print all;
+ * if optional == 0, ignore */
+ bv.bv_len = snprintf( c->cr_msg, sizeof( c->cr_msg ),
+ " %d %ld %ld %ld",
+ temp->attr_set_index,
+ temp->ttl,
+ temp->negttl,
+ temp->limitttl );
bv.bv_len += temp->querystr.bv_len + 2;
bv.bv_val = ch_malloc( bv.bv_len+1 );
ptr = bv.bv_val;
@@ -2666,6 +2875,7 @@ pc_cf_gen( ConfigArgs *c )
Debug( LDAP_DEBUG_CONFIG, "%s: %s.\n", c->log, c->cr_msg, 0 );
return( 1 );
}
+
cm->cc_period = (time_t)t;
Debug( pcache_debug,
"Total # of attribute sets to be cached = %d.\n",
@@ -2812,23 +3022,37 @@ pc_cf_gen( ConfigArgs *c )
ldap_pvt_thread_rdwr_init( &temp->t_rwlock );
temp->query = temp->query_last = NULL;
if ( lutil_parse_time( c->argv[3], &t ) != 0 ) {
- snprintf( c->cr_msg, sizeof( c->cr_msg ), "unable to parse template ttl=\"%s\"",
+ snprintf( c->cr_msg, sizeof( c->cr_msg ),
+ "unable to parse template ttl=\"%s\"",
c->argv[3] );
Debug( LDAP_DEBUG_CONFIG, "%s: %s.\n", c->log, c->cr_msg, 0 );
return( 1 );
}
temp->ttl = (time_t)t;
- if ( c->argc == 5 ) {
+ temp->negttl = (time_t)0;
+ temp->limitttl = (time_t)0;
+ switch ( c->argc ) {
+ case 6:
+ if ( lutil_parse_time( c->argv[5], &t ) != 0 ) {
+ snprintf( c->cr_msg, sizeof( c->cr_msg ),
+ "unable to parse template sizelimit ttl=\"%s\"",
+ c->argv[5] );
+ Debug( LDAP_DEBUG_CONFIG, "%s: %s.\n", c->log, c->cr_msg, 0 );
+ return( 1 );
+ }
+ temp->limitttl = (time_t)t;
+ /* fallthru */
+
+ case 5:
if ( lutil_parse_time( c->argv[4], &t ) != 0 ) {
snprintf( c->cr_msg, sizeof( c->cr_msg ),
- "unable to parse template negttl=\"%s\"",
+ "unable to parse template negative ttl=\"%s\"",
c->argv[4] );
Debug( LDAP_DEBUG_CONFIG, "%s: %s.\n", c->log, c->cr_msg, 0 );
return( 1 );
}
temp->negttl = (time_t)t;
- } else {
- temp->negttl = 0;
+ break;
}
temp->no_of_queries = 0;
@@ -2919,8 +3143,10 @@ pcache_db_init(
cm->max_queries = 10000;
cm->save_queries = 0;
cm->response_cb = PCACHE_RESPONSE_CB_TAIL;
+ cm->defer_db_open = 1;
cm->cc_period = 1000;
cm->cc_paused = 0;
+ cm->cc_arg = NULL;
qm->attr_sets = NULL;
qm->templates = NULL;
@@ -2961,64 +3187,39 @@ pcache_cachedquery_open_cb( Operation *op, SlapReply *rs )
}
static int
-pcache_db_open(
- BackendDB *be,
- ConfigReply *cr )
+pcache_cachedquery_count_cb( Operation *op, SlapReply *rs )
{
- slap_overinst *on = (slap_overinst *)be->bd_info;
- cache_manager *cm = on->on_bi.bi_private;
- query_manager* qm = cm->qm;
- int i, ncf = 0, rf = 0, nrf = 0, rc = 0;
-
- /* check attr sets */
- for ( i = 0; i < cm->numattrsets; i++) {
- if ( !( qm->attr_sets[i].flags & PC_CONFIGURED ) ) {
- if ( qm->attr_sets[i].flags & PC_REFERENCED ) {
- Debug( LDAP_DEBUG_CONFIG, "pcache: attr set #%d not configured but referenced.\n", i, 0, 0 );
- rf++;
-
- } else {
- Debug( LDAP_DEBUG_CONFIG, "pcache: warning, attr set #%d not configured.\n", i, 0, 0 );
- }
- ncf++;
-
- } else if ( !( qm->attr_sets[i].flags & PC_REFERENCED ) ) {
- Debug( LDAP_DEBUG_CONFIG, "pcache: attr set #%d configured but not referenced.\n", i, 0, 0 );
- nrf++;
- }
- }
+ assert( op->o_tag == LDAP_REQ_SEARCH );
- if ( ncf || rf || nrf ) {
- Debug( LDAP_DEBUG_CONFIG, "pcache: warning, %d attr sets configured but not referenced.\n", nrf, 0, 0 );
- Debug( LDAP_DEBUG_CONFIG, "pcache: warning, %d attr sets not configured.\n", ncf, 0, 0 );
- Debug( LDAP_DEBUG_CONFIG, "pcache: %d attr sets not configured but referenced.\n", rf, 0, 0 );
+ if ( rs->sr_type == REP_SEARCH ) {
+ int *countp = (int *)op->o_callback->sc_private;
- if ( rf > 0 ) {
- return 1;
- }
+ (*countp)++;
}
- /* need to inherit something from the original database... */
- cm->db.be_def_limit = be->be_def_limit;
- cm->db.be_limits = be->be_limits;
- cm->db.be_acl = be->be_acl;
- cm->db.be_dfltaccess = be->be_dfltaccess;
-
- if ( SLAP_DBMONITORING( be ) ) {
- SLAP_DBFLAGS( &cm->db ) |= SLAP_DBFLAG_MONITORING;
+ return 0;
+}
- } else {
- SLAP_DBFLAGS( &cm->db ) &= ~SLAP_DBFLAG_MONITORING;
- }
+static int
+pcache_db_open2(
+ slap_overinst *on,
+ ConfigReply *cr )
+{
+ cache_manager *cm = on->on_bi.bi_private;
+ query_manager* qm = cm->qm;
+ int rc;
rc = backend_startup_one( &cm->db, NULL );
+ if ( rc == 0 ) {
+ cm->defer_db_open = 0;
+ }
/* There is no runqueue in TOOL mode */
- if ( slapMode & SLAP_SERVER_MODE ) {
+ if (( slapMode & SLAP_SERVER_MODE ) && rc == 0 ) {
ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
ldap_pvt_runqueue_insert( &slapd_rq, cm->cc_period,
consistency_check, on,
- "pcache_consistency", be->be_suffix[0].bv_val );
+ "pcache_consistency", cm->db.be_suffix[0].bv_val );
ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
/* Cached database must have the rootdn */
@@ -3042,7 +3243,8 @@ pcache_db_open(
slap_callback cb = { 0 };
SlapReply rs = { 0 };
BerVarray vals = NULL;
- Filter f = { 0 };
+ Filter f = { 0 }, f2 = { 0 };
+ AttributeAssertion ava = ATTRIBUTEASSERTION_INIT;
AttributeName attrs[ 2 ] = { 0 };
connection_fake_init( &conn, &opbuf, thrctx );
@@ -3090,10 +3292,87 @@ pcache_db_open(
ber_bvarray_free_x( vals, op->o_tmpmemctx );
}
+ /* count cached entries */
+ f.f_choice = LDAP_FILTER_NOT;
+ f.f_not = &f2;
+ f2.f_choice = LDAP_FILTER_EQUALITY;
+ f2.f_ava = &ava;
+ f2.f_av_desc = slap_schema.si_ad_objectClass;
+ BER_BVSTR( &f2.f_av_value, "glue" );
+ ber_str2bv( "(!(objectClass=glue))", 0, 0, &op->ors_filterstr );
+
+ op->ors_slimit = SLAP_NO_LIMIT;
+ op->ors_scope = LDAP_SCOPE_SUBTREE;
+ op->ors_attrs = slap_anlist_no_attrs;
+
+ op->o_callback->sc_response = pcache_cachedquery_count_cb;
+ rs.sr_nentries = 0;
+ op->o_callback->sc_private = &rs.sr_nentries;
+
+ rc = op->o_bd->be_search( op, &rs );
+
+ cm->cur_entries = rs.sr_nentries;
+
/* ignore errors */
rc = 0;
}
}
+ return rc;
+}
+
+static int
+pcache_db_open(
+ BackendDB *be,
+ ConfigReply *cr )
+{
+ slap_overinst *on = (slap_overinst *)be->bd_info;
+ cache_manager *cm = on->on_bi.bi_private;
+ query_manager* qm = cm->qm;
+ int i, ncf = 0, rf = 0, nrf = 0, rc = 0;
+
+ /* check attr sets */
+ for ( i = 0; i < cm->numattrsets; i++) {
+ if ( !( qm->attr_sets[i].flags & PC_CONFIGURED ) ) {
+ if ( qm->attr_sets[i].flags & PC_REFERENCED ) {
+ Debug( LDAP_DEBUG_CONFIG, "pcache: attr set #%d not configured but referenced.\n", i, 0, 0 );
+ rf++;
+
+ } else {
+ Debug( LDAP_DEBUG_CONFIG, "pcache: warning, attr set #%d not configured.\n", i, 0, 0 );
+ }
+ ncf++;
+
+ } else if ( !( qm->attr_sets[i].flags & PC_REFERENCED ) ) {
+ Debug( LDAP_DEBUG_CONFIG, "pcache: attr set #%d configured but not referenced.\n", i, 0, 0 );
+ nrf++;
+ }
+ }
+
+ if ( ncf || rf || nrf ) {
+ Debug( LDAP_DEBUG_CONFIG, "pcache: warning, %d attr sets configured but not referenced.\n", nrf, 0, 0 );
+ Debug( LDAP_DEBUG_CONFIG, "pcache: warning, %d attr sets not configured.\n", ncf, 0, 0 );
+ Debug( LDAP_DEBUG_CONFIG, "pcache: %d attr sets not configured but referenced.\n", rf, 0, 0 );
+
+ if ( rf > 0 ) {
+ return 1;
+ }
+ }
+
+ /* need to inherit something from the original database... */
+ cm->db.be_def_limit = be->be_def_limit;
+ cm->db.be_limits = be->be_limits;
+ cm->db.be_acl = be->be_acl;
+ cm->db.be_dfltaccess = be->be_dfltaccess;
+
+ if ( SLAP_DBMONITORING( be ) ) {
+ SLAP_DBFLAGS( &cm->db ) |= SLAP_DBFLAG_MONITORING;
+
+ } else {
+ SLAP_DBFLAGS( &cm->db ) &= ~SLAP_DBFLAG_MONITORING;
+ }
+
+ if ( !cm->defer_db_open )
+ rc = pcache_db_open2( on, cr );
return rc;
}
@@ -3172,6 +3451,7 @@ pcache_db_close(
mod.sml_type = ad_cachedQueryURL->ad_cname;
mod.sml_values = vals;
mod.sml_nvalues = NULL;
+ mod.sml_numvals = 1;
mod.sml_next = NULL;
Debug( pcache_debug,
"%sSETTING CACHED QUERY URLS\n",
@@ -3502,37 +3782,35 @@ pcache_exop_query_delete(
{
BackendDB *bd = op->o_bd;
- struct berval uuid = BER_BVNULL;
+ struct berval uuid = BER_BVNULL,
+ *uuidp = NULL;
char buf[ SLAP_TEXT_BUFLEN ] = { '\0' };
int len = 0;
ber_tag_t tag = LBER_DEFAULT;
+ if ( LogTest( LDAP_DEBUG_STATS ) ) {
+ uuidp = &uuid;
+ }
+
rs->sr_err = pcache_parse_query_delete( op->ore_reqdata,
- &tag, &op->o_req_ndn, &uuid,
+ &tag, &op->o_req_ndn, uuidp,
&rs->sr_text, op->o_tmpmemctx );
if ( rs->sr_err != LDAP_SUCCESS ) {
return rs->sr_err;
}
if ( LogTest( LDAP_DEBUG_STATS ) ) {
- if ( !BER_BVISNULL( &op->o_req_ndn ) ) {
- len = snprintf( buf, sizeof( buf ), " dn=\"%s\"", op->o_req_ndn.bv_val );
- }
+ assert( !BER_BVISNULL( &op->o_req_ndn ) );
+ len = snprintf( buf, sizeof( buf ), " dn=\"%s\"", op->o_req_ndn.bv_val );
if ( !BER_BVISNULL( &uuid ) ) {
- char uuidbuf[ LDAP_LUTIL_UUIDSTR_BUFSIZE ];
-
- lutil_uuidstr_from_normalized(
- uuid.bv_val, uuid.bv_len,
- uuidbuf, sizeof( uuidbuf ) );
-
- snprintf( &buf[ len ], sizeof( buf ) - len, " UUID=\"%s\"", uuidbuf );
+ snprintf( &buf[ len ], sizeof( buf ) - len, " queryId=\"%s\"", uuid.bv_val );
}
Debug( LDAP_DEBUG_STATS, "%s QUERY DELETE%s\n",
op->o_log_prefix, buf, 0 );
- op->o_req_dn = op->o_req_ndn;
}
+ op->o_req_dn = op->o_req_ndn;
op->o_bd = select_backend( &op->o_req_ndn, 0 );
rs->sr_err = backend_check_restrictions( op, rs,
@@ -3593,9 +3871,8 @@ pcache_op_extended( Operation *op, SlapReply *rs )
} else if ( tag == LDAP_TAG_EXOP_QUERY_DELETE_BASE ) {
if ( !BER_BVISNULL( &uuid ) ) {
/* remove the selected query */
- remove_query_and_data( op, rs, cm, &uuid );
- op->o_tmpfree( uuid.bv_val, op->o_tmpmemctx );
- rs->sr_err = LDAP_SUCCESS;
+ rs->sr_err = pcache_remove_query_from_cache( op,
+ cm, &uuid );
} else {
/* TODO: remove all queries */
@@ -3603,6 +3880,8 @@ pcache_op_extended( Operation *op, SlapReply *rs )
rs->sr_text = "deletion of all queries not implemented";
}
}
+
+ op->o_tmpfree( uuid.bv_val, op->o_tmpmemctx );
}
return rs->sr_err;
@@ -3661,6 +3940,7 @@ pcache_initialize()
"pcache_initialize: register_at #%d failed\n", i, 0, 0 );
return code;
}
+ (*as[i].adp)->ad_type->sat_flags |= SLAP_AT_HIDE;
}
pcache.on_bi.bi_type = "pcache";
@@ -3693,6 +3973,11 @@ pcache_initialize()
code = config_register_schema( pccfg, pcocs );
if ( code ) return code;
+ {
+ const char *text;
+ code = slap_str2ad( "olcDatabase", &pcdummy[0].ad, &text );
+ if ( code ) return code;
+ }
return overlay_register( &pcache );
}