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The Apache Cassandra Project develops a highly scalable second-generation distributed database, bringing together Dynamo's fully distributed design and Bigtable's ColumnFamily-based data model.

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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 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.cassandra.metrics;

import java.util.concurrent.Callable;

import com.yammer.metrics.Metrics;
import com.yammer.metrics.core.Gauge;

public class ClientMetrics
{
    private static final MetricNameFactory factory = new DefaultNameFactory("Client");
    
    public static final ClientMetrics instance = new ClientMetrics();
    
    private ClientMetrics()
    {
    }

    public void addCounter(String name, final Callable provider)
    {
        Metrics.newGauge(factory.createMetricName(name), new Gauge()
        {
            public Integer value()
            {
                try
                {
                    return provider.call();
                }
                catch (Exception e)
                {
                    throw new RuntimeException(e);
                }
            }
        });
    }
}