/*
* 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.corona;
import java.util.EnumMap;
import java.util.Map;
/**
* Helps to count the resource type requests
*/
public class ResourceTypeCounter {
/** Internal map of types to counts */
private final Map<ResourceType, Integer> typeToCountMap =
new EnumMap<ResourceType, Integer>(ResourceType.class);
/**
* Increment the count for a given resource type
* @param resourceType Resource type to increment the count of
*/
public void incr(ResourceType resourceType) {
Integer current = typeToCountMap.get(resourceType);
if (current == null) {
typeToCountMap.put(resourceType, new Integer(1));
} else {
typeToCountMap.put(resourceType, current + 1);
}
}
/**
* Return the count of the ResourceType
* @param resourceType
* @return Count of the resource type
*/
public Integer getCount(ResourceType resourceType) {
Integer count = typeToCountMap.get(resourceType);
if (count == null) {
return 0;
} else {
return count;
}
}
}