/**
 * 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
 * <p>
 * http://www.apache.org/licenses/LICENSE-2.0
 * <p>
 * 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.emc.pravega.common.metrics;

/**
 * A simple interface that only exposes simple type metrics: Counter/Gauge.
 */
public interface DynamicLogger {

    /**
     * Increase Counter with value <i>delta</i> .
     *
     * @param name  the name of Counter
     * @param delta the delta to be added
     */
    void incCounterValue(String name, long delta);

    /**
     * Report gauge value.
     *
     * @param <T>   the type of value
     * @param name  the name of gauge
     * @param value the value to be reported
     */
    <T extends Number> void reportGaugeValue(String name, T value);


    /**
     * Record the occurrence of a given number of events in Meter.
     *
     * @param name   the name of Meter
     * @param number the number of events occurrence
     */
    void recordMeterEvents(String name, long number);
}
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