[MINOR] acl: add support for table_cnt and table_avl matches
Those trivial matches respectively return the number of entries used
in a stick-table and the number of entries still available in a table.
diff --git a/doc/configuration.txt b/doc/configuration.txt
index 3a3ddcc..3ebbb47 100644
--- a/doc/configuration.txt
+++ b/doc/configuration.txt
@@ -7402,6 +7402,17 @@
as boolean variables that can be enabled or disabled from the CLI, so that
rules depending on those ACLs can be tweaked in realtime.
+table_avl <integer>
+table_avl(table) <integer>
+ Returns the total number of available entries in the current proxy's
+ stick-table or in the designated stick-table. See also table_cnt.
+
+table_cnt <integer>
+table_cnt(table) <integer>
+ Returns the total number of entries currently in use in the current proxy's
+ stick-table or in the designated stick-table. See also src_conn_cnt and
+ table_avl for other entry counting methods.
+
7.5.2. Matching contents at Layer 4 (also called Layer 6)
---------------------------------------------------------
diff --git a/src/session.c b/src/session.c
index d673aaa..b7914d0 100644
--- a/src/session.c
+++ b/src/session.c
@@ -3166,6 +3166,37 @@
return acl_fetch_bytes_out_rate(&px->table, test, stktable_lookup_key(&px->table, key));
}
+/* set test->i to the number of used entries in the table pointed to by expr. */
+static int
+acl_fetch_table_cnt(struct proxy *px, struct session *l4, void *l7, int dir,
+ struct acl_expr *expr, struct acl_test *test)
+{
+ if (expr->arg_len)
+ px = find_stktable(expr->arg.str);
+
+ if (!px)
+ return 0; /* table not found */
+
+ test->flags = ACL_TEST_F_VOL_TEST;
+ test->i = px->table.current;
+ return 1;
+}
+
+/* set test->i to the number of free entries in the table pointed to by expr. */
+static int
+acl_fetch_table_avl(struct proxy *px, struct session *l4, void *l7, int dir,
+ struct acl_expr *expr, struct acl_test *test)
+{
+ if (expr->arg_len)
+ px = find_stktable(expr->arg.str);
+
+ if (!px)
+ return 0; /* table not found */
+
+ test->flags = ACL_TEST_F_VOL_TEST;
+ test->i = px->table.size - px->table.current;
+ return 1;
+}
/* Note: must not be declared <const> as its list will be overwritten */
static struct acl_kw_list acl_kws = {{ },{
@@ -3215,6 +3246,8 @@
{ "sc1_bytes_out_rate", acl_parse_int, acl_fetch_sc1_bytes_out_rate, acl_match_int, ACL_USE_NOTHING },
{ "sc2_bytes_out_rate", acl_parse_int, acl_fetch_sc2_bytes_out_rate, acl_match_int, ACL_USE_NOTHING },
{ "src_bytes_out_rate", acl_parse_int, acl_fetch_src_bytes_out_rate, acl_match_int, ACL_USE_TCP4_VOLATILE },
+ { "table_avl", acl_parse_int, acl_fetch_table_avl, acl_match_int, ACL_USE_NOTHING },
+ { "table_cnt", acl_parse_int, acl_fetch_table_cnt, acl_match_int, ACL_USE_NOTHING },
{ NULL, NULL, NULL, NULL },
}};