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/t/discovery/reset-healthchecker.t

@@ -0,0 +1,169 @@
+#
+# 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.
+#
+
+use t::APISIX 'no_plan';
+
+repeat_each(1);
+log_level('info');
+no_root_location();
+no_shuffle();
+workers(1);
+
+
+
+
+add_block_preprocessor(sub {
+    my ($block) = @_;
+    if (!$block->request) {
+        $block->set_value("request", "GET /t");
+    }
+    if ($block->apisix_yaml) {
+        my $upstream = <<_EOC_;
+upstreams:
+    - service_name: mock
+      discovery_type: mock
+      type: roundrobin
+      checks:
+        active:
+          http_path: /
+          timeout: 1
+          unhealthy:
+            tcp_failures: 30
+            interval: 1
+          healthy:
+            interval: 1
+      id: 1
+#END
+_EOC_
+
+        $block->set_value("apisix_yaml", $block->apisix_yaml . $upstream);
+    }
+});
+
+run_tests();
+
+__DATA__
+
+=== TEST 1: Validate healthchecker recreation on node count reduces to 1
+--- http_config
+server {
+    listen 3000 ;
+    location / {
+      return 200 'ok';
+    }
+}
+--- apisix_yaml
+routes:
+  -
+    uris:
+        - /
+    upstream_id: 1
+--- config
+    location /t {
+        content_by_lua_block {
+            local t = require("lib.test_admin").test
+            local discovery = require("apisix.discovery.init").discovery
+            discovery.mock = {
+                nodes = function()
+                    return {
+                        {host = "127.0.0.1", port = 3000, weight = 50},
+                        {host = "127.0.0.1", port = 8000, weight = 50},
+                    }
+                end
+            }
+            local http = require "resty.http"
+            local uri = "http://127.0.0.1:" .. ngx.var.server_port .. "/"
+            local httpc = http.new()
+            local res, err = httpc:request_uri(uri, {method = "GET", keepalive = false})
+            ngx.sleep(5)
+            discovery.mock = {
+                nodes = function()
+                    return {
+                        {host = "127.0.0.1", port = 3000, weight = 1}
+                    }
+                end
+            }
+            local http = require "resty.http"
+            local uri = "http://127.0.0.1:" .. ngx.var.server_port .. "/"
+            local httpc = http.new()
+            local res, err = httpc:request_uri(uri, {method = "GET", keepalive = false})
+            ngx.say(res.body)
+            ngx.sleep(5)
+        }
+    }
+--- request
+GET /t
+--- response_body
+ok
+--- timeout: 22
+--- no_error_log
+unhealthy TCP increment (10/30)
+
+
+
+=== TEST 2: Validate healthchecker deletion on node count reduces to 0
+--- http_config
+server {
+    listen 3000 ;
+    location / {
+      return 200 'ok';
+    }
+}
+--- apisix_yaml
+routes:
+  -
+    uris:
+        - /
+    upstream_id: 1
+--- config
+    location /t {
+        content_by_lua_block {
+            local t = require("lib.test_admin").test
+            local discovery = require("apisix.discovery.init").discovery
+            discovery.mock = {
+                nodes = function()
+                    return {
+                        {host = "127.0.0.1", port = 3000, weight = 50},
+                        {host = "127.0.0.1", port = 8000, weight = 50},
+                    }
+                end
+            }
+            local http = require "resty.http"
+            local uri = "http://127.0.0.1:" .. ngx.var.server_port .. "/"
+            local httpc = http.new()
+            local res, err = httpc:request_uri(uri, {method = "GET", keepalive = false})
+            ngx.sleep(5)
+            discovery.mock = {
+                nodes = function()
+                    return {
+                    }
+                end
+            }
+            local http = require "resty.http"
+            local uri = "http://127.0.0.1:" .. ngx.var.server_port .. "/"
+            local httpc = http.new()
+            local res, err = httpc:request_uri(uri, {method = "GET", keepalive = false})
+            ngx.status = res.status
+            ngx.sleep(5)
+        }
+    }
+--- request
+GET /t
+--- timeout: 22
+--- no_error_log
+unhealthy TCP increment (10/30)
+--- error_code: 503