feat(apisix): add Cloudron package

- Implements Apache APISIX packaging for Cloudron platform.
- Includes Dockerfile, CloudronManifest.json, and start.sh.
- Configured to use Cloudron's etcd addon.

🤖 Generated with Gemini CLI
Co-Authored-By: Gemini <noreply@google.com>

CloudronPackages/APISIX/apisix-source/apisix/plugins/node-status.lua

@@ -0,0 +1,98 @@
+--
+-- Licensed to the Apache Software Foundation (ASF) under one or more
+-- contributor license agreements.  See the NOTICE file distributed with
+-- this work for additional information regarding copyright ownership.
+-- The ASF licenses this file to You under the Apache License, Version 2.0
+-- (the "License"); you may not use this file except in compliance with
+-- the License.  You may obtain a copy of the License at
+--
+--     http://www.apache.org/licenses/LICENSE-2.0
+--
+-- Unless required by applicable law or agreed to in writing, software
+-- distributed under the License is distributed on an "AS IS" BASIS,
+-- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+-- See the License for the specific language governing permissions and
+-- limitations under the License.
+--
+local core = require("apisix.core")
+local ngx = ngx
+local re_gmatch = ngx.re.gmatch
+local ngx_capture = ngx.location.capture
+local plugin_name = "node-status"
+local apisix_id = core.id.get()
+local ipairs = ipairs
+
+
+local schema = {
+    type = "object",
+}
+
+
+local _M = {
+    version = 0.1,
+    priority = 1000,
+    name = plugin_name,
+    schema = schema,
+    scope = "global",
+}
+
+
+local ngx_status = {}
+local ngx_status_items = {
+    "active", "accepted", "handled", "total",
+    "reading", "writing", "waiting"
+}
+
+
+local function collect()
+    local res = ngx_capture("/apisix/nginx_status")
+    if res.status ~= 200 then
+        return res.status
+    end
+
+    -- Active connections: 2
+    -- server accepts handled requests
+    --   26 26 84
+    -- Reading: 0 Writing: 1 Waiting: 1
+
+    local iterator, err = re_gmatch(res.body, [[(\d+)]], "jmo")
+    if not iterator then
+        return 500, "failed to re.gmatch Nginx status: " .. err
+    end
+
+    core.table.clear(ngx_status)
+    for _, name in ipairs(ngx_status_items) do
+        local val = iterator()
+        if not val then
+            break
+        end
+
+        ngx_status[name] = val[0]
+    end
+
+    return 200, core.json.encode({id = apisix_id, status = ngx_status})
+end
+
+
+function _M.check_schema(conf)
+    local ok, err = core.schema.check(schema, conf)
+    if not ok then
+        return false, err
+    end
+
+    return true
+end
+
+
+function _M.api()
+    return {
+        {
+            methods = {"GET"},
+            uri = "/apisix/status",
+            handler = collect,
+        }
+    }
+end
+
+
+return _M