org.apache.hadoop.yarn.security.ContainerTokenSelector Maven / Gradle / Ivy
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* 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 org.apache.hadoop.shaded.com.liance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org.apache.hadoop.shaded.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.shaded.org.apache.hadoop.yarn.security;
import java.util.Collection;
import org.apache.hadoop.shaded.org.slf4j.Logger;
import org.apache.hadoop.shaded.org.slf4j.LoggerFactory;
import org.apache.hadoop.shaded.org.apache.hadoop.classification.InterfaceAudience.Public;
import org.apache.hadoop.shaded.org.apache.hadoop.classification.InterfaceStability.Stable;
import org.apache.hadoop.shaded.org.apache.hadoop.org.apache.hadoop.shaded.io.Text;
import org.apache.hadoop.shaded.org.apache.hadoop.security.token.Token;
import org.apache.hadoop.shaded.org.apache.hadoop.security.token.TokenIdentifier;
import org.apache.hadoop.shaded.org.apache.hadoop.security.token.TokenSelector;
@Public
@Stable
public class ContainerTokenSelector implements
TokenSelector {
private static final Logger LOG = LoggerFactory
.getLogger(ContainerTokenSelector.class);
@SuppressWarnings("unchecked")
@Override
public Token selectToken(Text service,
Collection> tokens) {
if (service == null) {
return null;
}
for (Token extends TokenIdentifier> token : tokens) {
LOG.debug("Looking for service: {}. Current token is {}", service,
token);
if (ContainerTokenIdentifier.KIND.equals(token.getKind()) &&
service.equals(token.getService())) {
return (Token) token;
}
}
return null;
}
}
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