hadoop CrossOriginFilterInitializer 源码

2022-10-20
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haddop CrossOriginFilterInitializer 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/timeline/webapp/CrossOriginFilterInitializer.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.timeline.webapp;

import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.http.FilterContainer;
import org.apache.hadoop.security.HttpCrossOriginFilterInitializer;
import org.apache.hadoop.security.http.CrossOriginFilter;

import java.util.Map;

public class CrossOriginFilterInitializer extends HttpCrossOriginFilterInitializer {

  public static final String PREFIX =
      "yarn.timeline-service.http-cross-origin.";

  @Override
  protected String getPrefix() {
    return PREFIX;
  }

  @Override
  public void initFilter(FilterContainer container, Configuration conf) {

    // setup the filter
    // use the keys with "yarn.timeline-service.http-cross-origin" prefix to
    // override the ones with the "hadoop.http.cross-origin" prefix.

    Map<String, String> filterParameters =
        getFilterParameters(conf, HttpCrossOriginFilterInitializer.PREFIX);
    filterParameters.putAll(getFilterParameters(conf, getPrefix()));

    container.addGlobalFilter("Cross Origin Filter",
          CrossOriginFilter.class.getName(), filterParameters);
  }
}

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