/* * Copyright 1999-2011 Alibaba Group. * * Licensed 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 com.alibaba.dubbo.rpc.cluster.router.file; import java.io.File; import java.io.FileReader; import java.io.IOException; import com.alibaba.dubbo.common.Constants; import com.alibaba.dubbo.common.URL; import com.alibaba.dubbo.common.utils.IOUtils; import com.alibaba.dubbo.rpc.cluster.Router; import com.alibaba.dubbo.rpc.cluster.RouterFactory; import com.alibaba.dubbo.rpc.cluster.router.script.ScriptRouterFactory; public class FileRouterFactory implements RouterFactory { public static final String NAME = "file"; private RouterFactory routerFactory; public void setRouterFactory(RouterFactory routerFactory) { this.routerFactory = routerFactory; } public Router getRouter(URL url) { try { // File URL 转换成 其它Route URL,然后Load // file:///d:/path/to/route.js?router=script ==> script:///d:/path/to/route.js?type=js&rule=<file-content> String protocol = url.getParameter(Constants.ROUTER_KEY, ScriptRouterFactory.NAME); // 将原类型转为协议 String type = null; // 使用文件后缀做为类型 String path = url.getPath(); if (path != null) { int i = path.lastIndexOf('.'); if (i > 0) { type = path.substring(i + 1); } } String rule = IOUtils.read(new FileReader(new File(url.getAbsolutePath()))); URL script = url.setProtocol(protocol).addParameter(Constants.TYPE_KEY, type).addParameterAndEncoded(Constants.RULE_KEY, rule); return routerFactory.getRouter(script); } catch (IOException e) { throw new IllegalStateException(e.getMessage(), e); } } }