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/wasm/fault-injection/main.go

@@ -0,0 +1,108 @@
+/*
+ * 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.
+ */
+
+package main
+
+import (
+	"math/rand"
+
+	"github.com/tetratelabs/proxy-wasm-go-sdk/proxywasm"
+	"github.com/tetratelabs/proxy-wasm-go-sdk/proxywasm/types"
+
+	// tinygo doesn't support encoding/json, see https://github.com/tinygo-org/tinygo/issues/447
+	"github.com/valyala/fastjson"
+)
+
+func main() {
+	proxywasm.SetVMContext(&vmContext{})
+}
+
+type vmContext struct {
+	types.DefaultVMContext
+}
+
+func (*vmContext) NewPluginContext(contextID uint32) types.PluginContext {
+	return &pluginContext{}
+}
+
+type pluginContext struct {
+	types.DefaultPluginContext
+	Body       []byte
+	HttpStatus uint32
+	Percentage int
+}
+
+func (ctx *pluginContext) OnPluginStart(pluginConfigurationSize int) types.OnPluginStartStatus {
+	data, err := proxywasm.GetPluginConfiguration()
+	if err != nil {
+		proxywasm.LogErrorf("error reading plugin configuration: %v", err)
+		return types.OnPluginStartStatusFailed
+	}
+
+	var p fastjson.Parser
+	v, err := p.ParseBytes(data)
+	if err != nil {
+		proxywasm.LogErrorf("error decoding plugin configuration: %v", err)
+		return types.OnPluginStartStatusFailed
+	}
+	ctx.Body = v.GetStringBytes("body")
+	ctx.HttpStatus = uint32(v.GetUint("http_status"))
+	if v.Exists("percentage") {
+		ctx.Percentage = v.GetInt("percentage")
+	} else {
+		ctx.Percentage = 100
+	}
+
+	// schema check
+	if ctx.HttpStatus < 200 {
+		proxywasm.LogError("bad http_status")
+		return types.OnPluginStartStatusFailed
+	}
+	if ctx.Percentage < 0 || ctx.Percentage > 100 {
+		proxywasm.LogError("bad percentage")
+		return types.OnPluginStartStatusFailed
+	}
+
+	return types.OnPluginStartStatusOK
+}
+
+func (ctx *pluginContext) NewHttpContext(contextID uint32) types.HttpContext {
+	return &httpLifecycle{parent: ctx}
+}
+
+type httpLifecycle struct {
+	types.DefaultHttpContext
+	parent *pluginContext
+}
+
+func sampleHit(percentage int) bool {
+	return rand.Intn(100) < percentage
+}
+
+func (ctx *httpLifecycle) OnHttpRequestHeaders(numHeaders int, endOfStream bool) types.Action {
+	plugin := ctx.parent
+	if !sampleHit(plugin.Percentage) {
+		return types.ActionContinue
+	}
+
+	err := proxywasm.SendHttpResponse(plugin.HttpStatus, nil, plugin.Body, -1)
+	if err != nil {
+		proxywasm.LogErrorf("failed to send local response: %v", err)
+		return types.ActionContinue
+	}
+	return types.ActionPause
+}