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Merge pull request #1 from apache/master
Sync apache dubbo code
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109 changes: 109 additions & 0 deletions
109
dubbo-cluster/src/main/java/org/apache/dubbo/rpc/cluster/router/tag/TagRouter.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,109 @@ | ||
| /* | ||
| * 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.router.tag; | ||
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| import org.apache.dubbo.common.Constants; | ||
| import org.apache.dubbo.common.URL; | ||
| import org.apache.dubbo.common.logger.Logger; | ||
| import org.apache.dubbo.common.logger.LoggerFactory; | ||
| import org.apache.dubbo.common.utils.StringUtils; | ||
| import org.apache.dubbo.rpc.Invocation; | ||
| import org.apache.dubbo.rpc.Invoker; | ||
| import org.apache.dubbo.rpc.RpcContext; | ||
| import org.apache.dubbo.rpc.RpcException; | ||
| import org.apache.dubbo.rpc.cluster.Router; | ||
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| import java.util.ArrayList; | ||
| import java.util.List; | ||
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| /** | ||
| * TagRouter | ||
| */ | ||
| public class TagRouter implements Router, Comparable<Router> { | ||
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| private static final Logger logger = LoggerFactory.getLogger(TagRouter.class); | ||
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| private final int priority; | ||
| private final URL url; | ||
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| public static final URL ROUTER_URL = new URL("tag", Constants.ANYHOST_VALUE, 0, Constants.ANY_VALUE).addParameters(Constants.RUNTIME_KEY, "true"); | ||
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| public TagRouter(URL url) { | ||
| this.url = url; | ||
| this.priority = url.getParameter(Constants.PRIORITY_KEY, 0); | ||
| } | ||
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| public TagRouter() { | ||
| this.url = ROUTER_URL; | ||
| this.priority = url.getParameter(Constants.PRIORITY_KEY, 0); | ||
| } | ||
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| @Override | ||
| public URL getUrl() { | ||
| return url; | ||
| } | ||
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| @Override | ||
| public <T> List<Invoker<T>> route(List<Invoker<T>> invokers, URL url, Invocation invocation) throws RpcException { | ||
| // filter | ||
| List<Invoker<T>> result = new ArrayList<>(); | ||
| try { | ||
| // Dynamic param | ||
| String tag = RpcContext.getContext().getAttachment(Constants.REQUEST_TAG_KEY); | ||
| // Tag request | ||
| if (!StringUtils.isEmpty(tag)) { | ||
| // Select tag invokers first | ||
| for (Invoker<T> invoker : invokers) { | ||
| if (tag.equals(invoker.getUrl().getParameter(Constants.TAG_KEY))) { | ||
| result.add(invoker); | ||
| } | ||
| } | ||
| // If no invoker be selected, downgrade to normal invokers | ||
| if (result.isEmpty()) { | ||
| for (Invoker<T> invoker : invokers) { | ||
| if (StringUtils.isEmpty(invoker.getUrl().getParameter(Constants.TAG_KEY))) { | ||
| result.add(invoker); | ||
| } | ||
| } | ||
| } | ||
| // Normal request | ||
| } else { | ||
| for (Invoker<T> invoker : invokers) { | ||
| // Can't access tag invoker,only normal invoker should be selected | ||
| if (StringUtils.isEmpty(invoker.getUrl().getParameter(Constants.TAG_KEY))) { | ||
| result.add(invoker); | ||
| } | ||
| } | ||
| } | ||
| return result; | ||
| } catch (Exception e) { | ||
| logger.error("Route by tag error,return all invokers.", e); | ||
| } | ||
| // Downgrade to all invokers | ||
| return invokers; | ||
| } | ||
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| @Override | ||
| public int compareTo(Router o) { | ||
| if (o == null || o.getClass() != TagRouter.class) { | ||
| return 1; | ||
| } | ||
| TagRouter c = (TagRouter) o; | ||
| return this.priority == c.priority ? url.toFullString().compareTo(c.url.toFullString()) : (this.priority > c.priority ? 1 : -1); | ||
| } | ||
| } |
32 changes: 32 additions & 0 deletions
32
dubbo-cluster/src/main/java/org/apache/dubbo/rpc/cluster/router/tag/TagRouterFactory.java
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|---|---|---|
| @@ -0,0 +1,32 @@ | ||
| /* | ||
| * 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.router.tag; | ||
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| import org.apache.dubbo.common.URL; | ||
| import org.apache.dubbo.rpc.cluster.Router; | ||
| import org.apache.dubbo.rpc.cluster.RouterFactory; | ||
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| public class TagRouterFactory implements RouterFactory { | ||
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| public static final String NAME = "tag"; | ||
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| @Override | ||
| public Router getRouter(URL url) { | ||
| return new TagRouter(url); | ||
| } | ||
| } |
3 changes: 2 additions & 1 deletion
3
...ter/src/main/resources/META-INF/dubbo/internal/org.apache.dubbo.rpc.cluster.RouterFactory
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,3 +1,4 @@ | ||
| file=org.apache.dubbo.rpc.cluster.router.file.FileRouterFactory | ||
| script=org.apache.dubbo.rpc.cluster.router.script.ScriptRouterFactory | ||
| condition=org.apache.dubbo.rpc.cluster.router.condition.ConditionRouterFactory | ||
| condition=org.apache.dubbo.rpc.cluster.router.condition.ConditionRouterFactory | ||
| tag=org.apache.dubbo.rpc.cluster.router.tag.TagRouterFactory |
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