membphis commented on a change in pull request #4880:
URL: https://github.com/apache/apisix/pull/4880#discussion_r801646329



##########
File path: apisix/discovery/kubernetes/init.lua
##########
@@ -29,7 +29,10 @@ local core = require("apisix.core")
 local util = require("apisix.cli.util")
 local local_conf = require("apisix.core.config_local").local_conf()
 local informer_factory = 
require("apisix.discovery.kubernetes.informer_factory")
-local endpoint_dict = ngx.shared.discovery
+local endpoint_dict = ngx.shared["discovery"]
+if not endpoint_dict then
+    error("failed to get ngx.shared.dict discovery when load kubernetes 
discovery plugin ")

Review comment:
       not clear

##########
File path: apisix/discovery/kubernetes/informer_factory.lua
##########
@@ -152,48 +152,47 @@ local function split_event (body, dispatch_event)
         remainder_body = string.sub(body, captured_size + 1)
     end
 
-    return remainder_body, "Success", nil
+    return remainder_body, "Success"

Review comment:
       I think "Success" is meaningless. let us remove it

##########
File path: apisix/discovery/kubernetes/informer_factory.lua
##########
@@ -240,24 +239,24 @@ local function watch(httpc, apiserver, informer)
                 body = remainder_body .. body
             end
 
-            remainder_body, reason, err = split_event(body, dispatch_event)
+            remainder_body, reason, err = split_event(body, dispatch_event, 
informer)
             if reason ~= "Success" then
                 if reason == "ResourceGone" then
-                    return true, "Success", nil
+                    return true
                 end
                 return false, reason, err
             end
         end
     end
-    return true, "Success", nil
+    return true
 end
 
-local function list_watch(self, apiserver)
+local function list_watch(informer, apiserver)

Review comment:
       nice change




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