[I] bug: discovery.kubernetes无法dump所有服务列表 [apisix]

[via GitHub]

liquanzhou opened a new issue, #12691:
URL: https://github.com/apache/apisix/issues/12691

   ### Current Behavior
   
   官方文档有写
   
   <img width="645" height="411" alt="Image" 
src="https://github.com/user-attachments/assets/38d4aea1-5b10-44ae-b8e5-48938265a50c";
 />
   
   但实际执行kubernetes的dump列表404
   curl http://127.0.0.1:9090/v1/discovery/kubernetes/dump
   
   请求eureka的dump列表可以成功
   curl http://127.0.0.1:9090/v1/discovery/eureka/dump
   
   
   
   解决方法: 在 apisix/discovery/kubernetes/init.lua ,增加一个函数
   
   
[kubernetes.init.lua.txt](https://github.com/user-attachments/files/23053025/kubernetes.init.lua.txt)
   
   
   
   -- 新增：控制路由 /v1/discovery/kubernetes/dump
   function _M.dump_data()
       local discovery_conf = local_conf.discovery.kubernetes
   
       local function collect_dict(dict)
           local out = {}
           if not dict then
               return out
           end
           local keys = dict:get_keys(0)
           if not keys then
               return out
           end
           for _, k in ipairs(keys) do
               if not core.string.has_suffix(k, "#version") then
                   local v = dict:get_stale(k)
                   if v then
                       local decoded = core.json.decode(v)
                       out[k] = decoded or v
                   end
               end
           end
           return out
       end
   
       local res = { config = local_conf.discovery.kubernetes }
       if #discovery_conf == 0 then
           -- 单实例模式：共享字典名称为 kubernetes 或 kubernetes-stream
           local dict = get_endpoint_dict()
           res.endpoints = collect_dict(dict)
       else
           -- 多实例模式：按 id 维度汇总 kubernetes-<id>
           local endpoints = {}
           for _, conf in ipairs(discovery_conf) do
               local id = conf.id
               endpoints[id] = collect_dict(get_endpoint_dict(id))
           end
           res.endpoints = endpoints
       end
   
       return res
   end
   
   
   
   ### Expected Behavior
   
   _No response_
   
   ### Error Logs
   
   _No response_
   
   ### Steps to Reproduce
   
   配置好k8s的服务发现
   执行dump接口,404
   curl http://127.0.0.1:9090/v1/discovery/kubernetes/dump
   
   ### Environment
   
   - APISIX version (run `apisix version`):3.9.1
   - Operating system (run `uname -a`):
   - OpenResty / Nginx version (run `openresty -V` or `nginx -V`): 
openresty/1.25.3.1
   - etcd version, if relevant (run `curl 
http://127.0.0.1:9090/v1/server_info`): 3.9.1
   - APISIX Dashboard version, if relevant:
   - Plugin runner version, for issues related to plugin runners:
   - LuaRocks version, for installation issues (run `luarocks --version`):
   


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