proxy: mcp.attach(CMD, r, "tag")

allows using tagged listeners (ex; `-l tag[test]:127.0.0.1:11212`) to
select a top level route for a function.

expects there to not be dozens of listeners, but for a handful will be
faster than a hash table lookup.

1 files changed, 7 insertions, 1 deletions

diff --git a/proxy.h b/proxy.h
index 1c5da3d..015c093 100644
--- a/proxy.h
+++ b/proxy.h
@@ -218,9 +218,15 @@ typedef struct {
     pthread_mutex_t stats_lock; // used for rare global counters
 } proxy_ctx_t;
 
+struct proxy_hook_tagged {
+    uint64_t tag;
+    int lua_ref;
+};
+
 struct proxy_hook {
     int lua_ref;
-    bool is_lua; // pull the lua reference and call it as a lua function.
+    int tagcount;
+    struct proxy_hook_tagged *tagged; // array of possible tagged hooks.
 };
 
 // TODO (v2): some hash functions (crc?) might require initializers. If we run into