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/**
 * Copyright 2014 Netflix, Inc.
 *
 * 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 com.netflix.servo.jmx;

import javax.management.ObjectName;

import com.netflix.servo.monitor.Monitor;

/**
 * Allows for different implementations when mapping a
 * monitor to a JMX {@link ObjectName}. The mapper can be
 * can be specified when using the {@link JmxMonitorRegistry}.
 * This interface also has a reference to the default mapping implementation.
 * Note that an {@link ObjectName}'s properties are meant to be unordered,
 * however, some tools such as VisualVM use the order to build a hierarchy
 * view where the default implementation may not be desirable.
 */
public interface ObjectNameMapper {

    /**
     * The default mapping implementation. This implementation simply
     * appends the monitor's name followed by all the tags as properties
     * of the {@link ObjectName}. The mapper remaps any characters that are
     * not alphanumeric, a period, or hypen to an underscore.
     */
    ObjectNameMapper DEFAULT = new DefaultObjectNameMapper();

    /**
     * Given the domain and monitor generates an {@link ObjectName} to use.
     * @param domain  the JMX domain
     * @param monitor the monitor
     * @return The created ObjectName
     */
    ObjectName createObjectName(String domain, Monitor monitor);

}