org.apache.hadoop.yarn.conf.ConfigurationProviderFactory Maven / Gradle / Ivy
/**
* 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.conf;
import org.apache.hadoop.classification.InterfaceAudience.Private;
import org.apache.hadoop.classification.InterfaceStability.Unstable;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.util.ReflectionUtils;
import org.apache.hadoop.yarn.exceptions.YarnRuntimeException;
@Private
@Unstable
/**
* Factory for {@link ConfigurationProvider} implementations.
*/
public class ConfigurationProviderFactory {
/**
* Creates an instance of {@link ConfigurationProvider} using given
* configuration.
* @param bootstrapConf
* @return configurationProvider
*/
@SuppressWarnings("unchecked")
public static ConfigurationProvider
getConfigurationProvider(Configuration bootstrapConf) {
Class defaultProviderClass;
try {
defaultProviderClass = (Class)
Class.forName(
YarnConfiguration.DEFAULT_RM_CONFIGURATION_PROVIDER_CLASS);
} catch (Exception e) {
throw new YarnRuntimeException(
"Invalid default configuration provider class"
+ YarnConfiguration.DEFAULT_RM_CONFIGURATION_PROVIDER_CLASS, e);
}
ConfigurationProvider configurationProvider =
ReflectionUtils.newInstance(bootstrapConf.getClass(
YarnConfiguration.RM_CONFIGURATION_PROVIDER_CLASS,
defaultProviderClass, ConfigurationProvider.class),
bootstrapConf);
return configurationProvider;
}
}