From c65e6cc0bd11b1e85c23352944eb7c8743027b16 Mon Sep 17 00:00:00 2001
From: jinhua luo <home_king@163.com>
Date: Thu, 20 Oct 2022 17:09:56 +0800
Subject: [PATCH] fix(ai): use # to concat route cache key parts (#8128)

better performance and much clearer
---
 apisix/plugins/ai.lua | 7 +++----
 t/plugin/ai.t         | 6 +++---
 2 files changed, 6 insertions(+), 7 deletions(-)

diff --git a/apisix/plugins/ai.lua b/apisix/plugins/ai.lua
index 6b60aac29c1f..cb69f59a7c68 100644
--- a/apisix/plugins/ai.lua
+++ b/apisix/plugins/ai.lua
@@ -21,7 +21,6 @@ local event           = require("apisix.core.event")
 local ipairs          = ipairs
 local pcall           = pcall
 local loadstring      = loadstring
-local encode_base64   = ngx.encode_base64
 
 local get_cache_key_func
 local get_cache_key_func_def_render
@@ -31,10 +30,10 @@ return function(ctx)
     local var = ctx.var
     return var.uri
         {% if route_flags["methods"] then %}
-        .. "\0" .. var.method
+        .. "#" .. var.method
         {% end %}
         {% if route_flags["host"] then %}
-        .. "\0" .. var.host
+        .. "#" .. var.host
         {% end %}
 end
 ]]
@@ -68,7 +67,7 @@ end
 
 local function ai_match(ctx)
     local key = get_cache_key_func(ctx)
-    core.log.info("route cache key: ", core.log.delay_exec(encode_base64, key))
+    core.log.info("route cache key: ", key)
     local ver = router.router_http.user_routes.conf_version
     local route_cache = route_lrucache(key, ver,
                                        match_route, ctx)
diff --git a/t/plugin/ai.t b/t/plugin/ai.t
index 3c0cd62d97e0..9415771ab629 100644
--- a/t/plugin/ai.t
+++ b/t/plugin/ai.t
@@ -520,7 +520,7 @@ use ai plane to match route
 --- response_body
 done
 --- error_log
-route cache key: L2hlbGxv
+route cache key: /hello
 
 
 
@@ -569,7 +569,7 @@ route cache key: L2hlbGxv
 --- response_body
 done
 --- error_log
-route cache key: L2hlbGxvAEdFVA==
+route cache key: /hello#GET
 
 
 
@@ -619,4 +619,4 @@ route cache key: L2hlbGxvAEdFVA==
 --- response_body
 done
 --- error_log
-route cache key: L2hlbGxvAEdFVAAxMjcuMC4wLjE=
+route cache key: /hello#GET#127.0.0.1