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/admin/utils.lua

@@ -0,0 +1,113 @@
+--
+-- 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_time = ngx.time
+local tonumber = tonumber
+local ipairs = ipairs
+local pairs = pairs
+
+
+local _M = {}
+
+
+local function inject_timestamp(conf, prev_conf, patch_conf)
+    if not conf.create_time then
+        if prev_conf and (prev_conf.node or prev_conf.list).value.create_time then
+            conf.create_time = (prev_conf.node or prev_conf.list).value.create_time
+        else
+            -- As we don't know existent data's create_time, we have to pretend
+            -- they are created now.
+            conf.create_time = ngx_time()
+        end
+    end
+
+    if not conf.update_time or
+        -- For PATCH request, the modification is passed as 'patch_conf'
+        -- If the sub path is used, the 'patch_conf' will be a placeholder `true`
+        (patch_conf and (patch_conf == true or patch_conf.update_time == nil))
+    then
+        -- reset the update_time if:
+        -- 1. PATCH request, with sub path
+        -- 2. PATCH request, update_time not given
+        -- 3. Other request, update_time not given
+        conf.update_time = ngx_time()
+    end
+end
+_M.inject_timestamp = inject_timestamp
+
+
+function _M.inject_conf_with_prev_conf(kind, key, conf)
+    local res, err = core.etcd.get(key)
+    if not res or (res.status ~= 200 and res.status ~= 404) then
+        core.log.error("failed to get " .. kind .. "[", key, "] from etcd: ", err or res.status)
+        return nil, err
+    end
+
+    if res.status == 404 then
+        inject_timestamp(conf)
+    else
+        inject_timestamp(conf, res.body)
+    end
+
+    return true
+end
+
+
+-- fix_count makes the "count" field returned by etcd reasonable
+function _M.fix_count(body, id)
+    if body.count then
+        if not id then
+            -- remove the count of placeholder (init_dir)
+            body.count = tonumber(body.count) - 1
+        else
+            body.count = tonumber(body.count)
+        end
+    end
+end
+
+
+function _M.decrypt_params(decrypt_func, body, schema_type)
+    -- list
+    if body.list then
+        for _, route in ipairs(body.list) do
+            if route.value and route.value.plugins then
+                for name, conf in pairs(route.value.plugins) do
+                    decrypt_func(name, conf, schema_type)
+                end
+            end
+        end
+        return
+    end
+
+    -- node
+    local plugins = body.node and body.node.value
+                    and body.node.value.plugins
+
+    if plugins then
+        for name, conf in pairs(plugins) do
+            decrypt_func(name, conf, schema_type)
+        end
+    end
+
+    -- metadata
+    if schema_type == core.schema.TYPE_METADATA then
+        local conf = body.node and body.node.value
+        decrypt_func(conf.name, conf, schema_type)
+    end
+end
+
+return _M