hadoop DefaultPage 源码
haddop DefaultPage 代码
文件路径：/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/main/java/org/apache/hadoop/yarn/webapp/view/DefaultPage.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.webapp.view;
import org.apache.hadoop.thirdparty.com.google.common.base.Joiner;
import java.util.Enumeration;
import java.util.Map;
import org.apache.hadoop.classification.InterfaceAudience;
@InterfaceAudience.LimitedPrivate({"YARN", "MapReduce"})
public class DefaultPage extends TextPage {
static final Joiner valJoiner = Joiner.on(", ");
@Override
public void render() {
puts("Request URI: ", request().getRequestURI());
puts("Query parameters:");
@SuppressWarnings("unchecked")
Map<String, String[]> params = request().getParameterMap();
for (Map.Entry<String, String[]> e : params.entrySet()) {
puts(" ", e.getKey(), "=", valJoiner.join(e.getValue()));
}
puts("More parameters:");
for (Map.Entry<String, String> e : moreParams().entrySet()) {
puts(" ", e.getKey(), "=", e.getValue());
}
puts("Path info: ", request().getPathInfo());
puts("Path translated: ", request().getPathTranslated());
puts("Auth type: ", request().getAuthType());
puts("Remote address: "+ request().getRemoteAddr());
puts("Remote user: ", request().getRemoteUser());
puts("Servlet attributes:");
@SuppressWarnings("unchecked")
Enumeration<String> attrNames = request().getAttributeNames();
while (attrNames.hasMoreElements()) {
String key = attrNames.nextElement();
puts(" ", key, "=", request().getAttribute(key));
}
puts("Headers:");
@SuppressWarnings("unchecked")
Enumeration<String> headerNames = request().getHeaderNames();
while (headerNames.hasMoreElements()) {
String key = headerNames.nextElement();
puts(" ", key, "=", request().getHeader(key));
}
}
}
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