MEDIUM: stick-tables: Add srvkey option to stick-table
This allows using the address of the server rather than the name of the
server for keeping track of servers in a backend for stickiness.
The peers code was also extended to support feeding the dictionary using
this key instead of the name.
Fixes #814
diff --git a/src/dict.c b/src/dict.c
index 903f073..9b3536d 100644
--- a/src/dict.c
+++ b/src/dict.c
@@ -87,8 +87,10 @@
HA_RWLOCK_RDLOCK(DICT_LOCK, &d->rwlock);
de = __dict_lookup(d, s);
HA_RWLOCK_RDUNLOCK(DICT_LOCK, &d->rwlock);
- if (de)
+ if (de) {
+ HA_ATOMIC_ADD(&de->refcount, 1);
return de;
+ }
de = new_dict_entry(s);
if (!de)
@@ -105,3 +107,23 @@
return de;
}
+
+/*
+ * Unreference a dict entry previously acquired with <dict_insert>.
+ * If this is the last live reference to the entry, it is
+ * removed from the dictionary.
+ */
+void dict_entry_unref(struct dict *d, struct dict_entry *de)
+{
+ if (!de)
+ return;
+
+ if (HA_ATOMIC_SUB(&de->refcount, 1) != 0)
+ return;
+
+ HA_RWLOCK_WRLOCK(DICT_LOCK, &d->rwlock);
+ ebpt_delete(&de->value);
+ HA_RWLOCK_WRUNLOCK(DICT_LOCK, &d->rwlock);
+
+ free_dict_entry(de);
+}