org.apache.tajo.util.metrics.TajoJMXObjectNameFactory.java Source code

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Here is the source code for org.apache.tajo.util.metrics.TajoJMXObjectNameFactory.java

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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.tajo.util.metrics;

import com.codahale.metrics.ObjectNameFactory;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import javax.management.MalformedObjectNameException;
import javax.management.ObjectName;

public class TajoJMXObjectNameFactory implements ObjectNameFactory {
    private static final Log LOG = LogFactory.getLog(TajoMetrics.class);
    private static String[] jmxHierarchies = new String[] { "type", "context" };
    private static String SEPARATOR_RGX = "\\.";

    @Override
    public ObjectName createName(String type, String domain, String name) {
        try {
            StringBuilder sb = new StringBuilder();
            sb.append(domain).append(":");

            String[] nameSplit = name.split(SEPARATOR_RGX, 3);
            ObjectName objectName = null;
            if (nameSplit.length == 1) {
                objectName = new ObjectName(domain, "name", name);
            } else {
                for (int i = 0; i < nameSplit.length - 1 && i < jmxHierarchies.length; i++) {
                    sb.append(jmxHierarchies[i]).append("=").append(nameSplit[i]).append(",");
                }
                sb.append("name=").append(nameSplit[nameSplit.length - 1]);
                objectName = new ObjectName(sb.toString());
            }

            if (objectName.isPattern()) {
                objectName = new ObjectName(domain, "name", ObjectName.quote(name));
            }
            return objectName;
        } catch (MalformedObjectNameException e) {
            try {
                return new ObjectName(domain, "name", ObjectName.quote(name));
            } catch (MalformedObjectNameException e1) {
                if (LOG.isDebugEnabled()) {
                    LOG.warn("Unable to register for " + type + " " + name + " " + e1.getMessage(), e1);
                } else {
                    LOG.warn("Unable to register for " + type + " " + name + " " + e1.getMessage());
                }
                throw new RuntimeException(e1);
            }
        }
    }
}