hadoop HttpCrossOriginFilterInitializer 源码
haddop HttpCrossOriginFilterInitializer 代码
文件路径:/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/security/HttpCrossOriginFilterInitializer.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.security;
import java.util.HashMap;
import java.util.Map;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.http.FilterContainer;
import org.apache.hadoop.http.FilterInitializer;
import org.apache.hadoop.security.http.CrossOriginFilter;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class HttpCrossOriginFilterInitializer extends FilterInitializer {
public static final String PREFIX = "hadoop.http.cross-origin.";
public static final String ENABLED_SUFFIX = "enabled";
private static final Logger LOG =
LoggerFactory.getLogger(HttpCrossOriginFilterInitializer.class);
@Override
public void initFilter(FilterContainer container, Configuration conf) {
String key = getEnabledConfigKey();
boolean enabled = conf.getBoolean(key, false);
if (enabled) {
container.addGlobalFilter("Cross Origin Filter",
CrossOriginFilter.class.getName(),
getFilterParameters(conf, getPrefix()));
} else {
LOG.info("CORS filter not enabled. Please set " + key
+ " to 'true' to enable it");
}
}
protected static Map<String, String> getFilterParameters(Configuration conf,
String prefix) {
Map<String, String> filterParams = new HashMap<String, String>();
for (Map.Entry<String, String> entry : conf.getValByRegex(prefix)
.entrySet()) {
String name = entry.getKey();
String value = entry.getValue();
name = name.substring(prefix.length());
filterParams.put(name, value);
}
return filterParams;
}
protected String getPrefix() {
return HttpCrossOriginFilterInitializer.PREFIX;
}
protected String getEnabledConfigKey() {
return getPrefix() + HttpCrossOriginFilterInitializer.ENABLED_SUFFIX;
}
}
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