hadoop JAXBContextResolver 源码

  • 2022-10-20
  • 浏览 (16)

haddop JAXBContextResolver 代码

文件路径:/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-applicationhistoryservice/src/main/java/org/apache/hadoop/yarn/server/applicationhistoryservice/webapp/JAXBContextResolver.java

/**
 * 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.hadoop.yarn.server.applicationhistoryservice.webapp;

import java.util.Arrays;
import java.util.HashSet;
import java.util.Set;

import javax.ws.rs.ext.ContextResolver;
import javax.ws.rs.ext.Provider;
import javax.xml.bind.JAXBContext;

import org.apache.hadoop.yarn.server.webapp.dao.AppAttemptInfo;
import org.apache.hadoop.yarn.server.webapp.dao.AppAttemptsInfo;
import org.apache.hadoop.yarn.server.webapp.dao.AppInfo;
import org.apache.hadoop.yarn.server.webapp.dao.AppsInfo;
import org.apache.hadoop.yarn.server.webapp.dao.ContainerInfo;
import org.apache.hadoop.yarn.server.webapp.dao.ContainersInfo;

import com.google.inject.Singleton;
import com.sun.jersey.api.json.JSONConfiguration;
import com.sun.jersey.api.json.JSONJAXBContext;

@Singleton
@Provider
@SuppressWarnings("rawtypes")
public class JAXBContextResolver implements ContextResolver<JAXBContext> {

  private JAXBContext context;
  private final Set<Class> types;

  // you have to specify all the dao classes here
  private final Class[] cTypes = { AppInfo.class, AppsInfo.class,
      AppAttemptInfo.class, AppAttemptsInfo.class, ContainerInfo.class,
      ContainersInfo.class };

  public JAXBContextResolver() throws Exception {
    this.types = new HashSet<Class>(Arrays.asList(cTypes));
    this.context =
        new JSONJAXBContext(JSONConfiguration.natural().rootUnwrapping(false)
          .build(), cTypes);
  }

  @Override
  public JAXBContext getContext(Class<?> objectType) {
    return (types.contains(objectType)) ? context : null;
  }
}

相关信息

hadoop 源码目录

相关文章

hadoop AHSController 源码

hadoop AHSErrorsAndWarningsPage 源码

hadoop AHSLogsPage 源码

hadoop AHSView 源码

hadoop AHSWebApp 源码

hadoop AHSWebServices 源码

hadoop AboutBlock 源码

hadoop AboutPage 源码

hadoop AppAttemptPage 源码

hadoop AppPage 源码

0  赞