| /* |
| * 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 org.apache.dubbo.rpc.cluster.directory; |
| |
| import org.apache.dubbo.common.URL; |
| import org.apache.dubbo.common.logger.ErrorTypeAwareLogger; |
| import org.apache.dubbo.common.logger.LoggerFactory; |
| import org.apache.dubbo.common.utils.CollectionUtils; |
| import org.apache.dubbo.rpc.Invocation; |
| import org.apache.dubbo.rpc.Invoker; |
| import org.apache.dubbo.rpc.RpcException; |
| import org.apache.dubbo.rpc.cluster.RouterChain; |
| import org.apache.dubbo.rpc.cluster.router.state.BitList; |
| |
| import java.util.List; |
| |
| import static org.apache.dubbo.common.constants.LoggerCodeConstants.CLUSTER_FAILED_SITE_SELECTION; |
| |
| /** |
| * StaticDirectory |
| */ |
| public class StaticDirectory<T> extends AbstractDirectory<T> { |
| private static final ErrorTypeAwareLogger logger = LoggerFactory.getErrorTypeAwareLogger(StaticDirectory.class); |
| |
| public StaticDirectory(List<Invoker<T>> invokers) { |
| this(null, invokers, null); |
| } |
| |
| public StaticDirectory(List<Invoker<T>> invokers, RouterChain<T> routerChain) { |
| this(null, invokers, routerChain); |
| } |
| |
| public StaticDirectory(URL url, List<Invoker<T>> invokers) { |
| this(url, invokers, null); |
| } |
| |
| public StaticDirectory(URL url, List<Invoker<T>> invokers, RouterChain<T> routerChain) { |
| super(url == null && CollectionUtils.isNotEmpty(invokers) ? invokers.get(0).getUrl() : url, routerChain, false); |
| if (CollectionUtils.isEmpty(invokers)) { |
| throw new IllegalArgumentException("invokers == null"); |
| } |
| this.setInvokers(new BitList<>(invokers)); |
| } |
| |
| @Override |
| public Class<T> getInterface() { |
| return getInvokers().get(0).getInterface(); |
| } |
| |
| @Override |
| public List<Invoker<T>> getAllInvokers() { |
| return getInvokers(); |
| } |
| |
| @Override |
| public boolean isAvailable() { |
| if (isDestroyed()) { |
| return false; |
| } |
| for (Invoker<T> invoker : getValidInvokers()) { |
| if (invoker.isAvailable()) { |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| @Override |
| public void destroy() { |
| if (isDestroyed()) { |
| return; |
| } |
| for (Invoker<T> invoker : getInvokers()) { |
| invoker.destroy(); |
| } |
| super.destroy(); |
| } |
| |
| public void buildRouterChain() { |
| RouterChain<T> routerChain = RouterChain.buildChain(getInterface(), getUrl()); |
| routerChain.setInvokers(getInvokers()); |
| this.setRouterChain(routerChain); |
| } |
| |
| public void notify(List<Invoker<T>> invokers) { |
| this.setInvokers(new BitList<>(invokers)); |
| if (routerChain != null) { |
| routerChain.setInvokers(this.getInvokers()); |
| } |
| } |
| |
| @Override |
| protected List<Invoker<T>> doList(BitList<Invoker<T>> invokers, Invocation invocation) throws RpcException { |
| if (routerChain != null) { |
| try { |
| List<Invoker<T>> finalInvokers = routerChain.route(getConsumerUrl(), invokers, invocation); |
| return finalInvokers == null ? BitList.emptyList() : finalInvokers; |
| } catch (Throwable t) { |
| logger.error(CLUSTER_FAILED_SITE_SELECTION,"Failed to execute router","","Failed to execute router: " + getUrl() + ", cause: " + t.getMessage(),t); |
| return BitList.emptyList(); |
| } |
| } |
| return invokers; |
| } |
| |
| } |