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/*
* Copyright 2013 the original author or authors.
*
* Licensed 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.springframework.yarn.support.compat;
import java.lang.reflect.Method;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.yarn.api.records.Resource;
import org.springframework.util.ReflectionUtils;
/**
* Compat class for {@link Resource}.
*
* @author Janne Valkealahti
*
*/
public class ResourceCompat {
private final static Log log = LogFactory.getLog(ResourceCompat.class);
/** Method for {@link Resource#setVirtualCores(int)}*/
private static Method setVirtualCores;
/**
* Invokes {@link Resource#setVirtualCores(int)}.
*
* @param resource the target object
* @param vCores the vCores
*/
public static void setVirtualCores(Resource resource, int vCores) {
if (setVirtualCores == null) {
setVirtualCores = ReflectionUtils.findMethod(Resource.class, "setVirtualCores", int.class);
}
if (setVirtualCores != null) {
ReflectionUtils.invokeMethod(setVirtualCores, resource, vCores);
} else {
log.warn("Method setVirtualCores(int) is not implemented");
}
}
}