/**
 * Copyright (c) 2010 Yahoo! Inc. All rights reserved.
 * 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. See accompanying LICENSE file.
 */
package org.apache.oozie.util;

import org.apache.oozie.command.XCommand;

/**
 * Instrument utilities.
 */
public class InstrumentUtils {

    private static final String INSTRUMENTATION_JOB_GROUP = "jobs";

    /**
     * Convenience method to increment counters.
     *
     * @param group the group name.
     * @param name the counter name.
     * @param count increment count.
     * @param instrumentation the {@link Instrumentation} instance
     */
    public static void incrCounter(String group, String name, int count, Instrumentation instrumentation) {
        if (instrumentation != null) {
            instrumentation.incr(group, name, count);
        }
    }

    /**
     * Used to increment command counters.
     *
     * @param name the name
     * @param count the increment count
     * @param instrumentation the {@link Instrumentation} instance
     */
    public static void incrCommandCounter(String name, int count, Instrumentation instrumentation) {
        incrCounter(XCommand.INSTRUMENTATION_GROUP, name, count, instrumentation);
    }

    /**
     * Used to increment job counters. The counter name s the same as the command name.
     *
     * @param name the name
     * @param count the increment count
     * @param instrumentation the {@link Instrumentation} instance
     */
    public static void incrJobCounter(String name, int count, Instrumentation instrumentation) {
        incrCounter(INSTRUMENTATION_JOB_GROUP, name, count, instrumentation);
    }
}