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/opa/helper.lua

@@ -0,0 +1,117 @@
+--
+-- 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 get_service = require("apisix.http.service").get
+local ngx_time    = ngx.time
+
+local _M = {}
+
+
+-- build a table of Nginx variables with some generality
+-- between http subsystem and stream subsystem
+local function build_var(conf, ctx)
+    return {
+        server_addr = ctx.var.server_addr,
+        server_port = ctx.var.server_port,
+        remote_addr = ctx.var.remote_addr,
+        remote_port = ctx.var.remote_port,
+        timestamp   = ngx_time(),
+    }
+end
+
+
+local function build_http_request(conf, ctx)
+    return {
+        scheme  = core.request.get_scheme(ctx),
+        method  = core.request.get_method(),
+        host    = core.request.get_host(ctx),
+        port    = core.request.get_port(ctx),
+        path    = ctx.var.uri,
+        headers = core.request.headers(ctx),
+        query   = core.request.get_uri_args(ctx),
+    }
+end
+
+
+local function build_http_route(conf, ctx, remove_upstream)
+    local route = core.table.deepcopy(ctx.matched_route).value
+
+    if remove_upstream and route and route.upstream then
+        -- unimportant to send upstream info to OPA
+        route.upstream = nil
+    end
+
+    return route
+end
+
+
+local function build_http_service(conf, ctx)
+    local service_id = ctx.service_id
+
+    -- possible that there is no service bound to the route
+    if service_id then
+        local service = core.table.clone(get_service(service_id)).value
+
+        if service then
+            if service.upstream then
+                service.upstream = nil
+            end
+            return service
+        end
+    end
+
+    return nil
+end
+
+
+local function build_http_consumer(conf, ctx)
+    -- possible that there is no consumer bound to the route
+    if ctx.consumer then
+        return core.table.clone(ctx.consumer)
+    end
+
+    return nil
+end
+
+
+function _M.build_opa_input(conf, ctx, subsystem)
+    local data = {
+        type    = subsystem,
+        request = build_http_request(conf, ctx),
+        var     = build_var(conf, ctx)
+    }
+
+    if conf.with_route then
+        data.route = build_http_route(conf, ctx, true)
+    end
+
+    if conf.with_consumer then
+        data.consumer = build_http_consumer(conf, ctx)
+    end
+
+    if conf.with_service then
+        data.service = build_http_service(conf, ctx)
+    end
+
+    return {
+        input = data,
+    }
+end
+
+
+return _M