org.apache.flink.runtime.security.modules.HadoopModuleFactory Maven / Gradle / Ivy
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* Licensed to the Apache Software Foundation (ASF) under one
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* 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
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*/
package org.apache.flink.runtime.security.modules;
import org.apache.flink.runtime.hadoop.HadoopDependency;
import org.apache.flink.runtime.security.SecurityConfiguration;
import org.apache.flink.runtime.util.HadoopUtils;
import org.apache.hadoop.conf.Configuration;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* A {@link SecurityModuleFactory} for {@link HadoopModule}. This checks if Hadoop dependencies are
* available before creating a {@link HadoopModule}.
*/
public class HadoopModuleFactory implements SecurityModuleFactory {
private static final Logger LOG = LoggerFactory.getLogger(HadoopModuleFactory.class);
@Override
public SecurityModule createModule(SecurityConfiguration securityConfig) {
// First check if we have Hadoop in the ClassPath. If not, we simply don't do anything.
if (!HadoopDependency.isHadoopCommonOnClasspath(HadoopModule.class.getClassLoader())) {
LOG.info(
"Cannot create Hadoop Security Module because Hadoop cannot be found in the Classpath.");
return null;
}
try {
Configuration hadoopConfiguration =
HadoopUtils.getHadoopConfiguration(securityConfig.getFlinkConfig());
return new HadoopModule(securityConfig, hadoopConfiguration);
} catch (LinkageError e) {
LOG.warn(
"Cannot create Hadoop Security Module due to an error that happened while instantiating the module. No security module will be loaded.",
e);
return null;
}
}
}