storm-client/src/jvm/org/apache/storm/metric/api/rpc/CountShellMetric.java

/**
 * 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.storm.metric.api.rpc;

import org.apache.storm.metric.api.CountMetric;

public class CountShellMetric extends CountMetric implements IShellMetric {
    /**
     * Update metric from RPC.
     *
     * @param value should be null or long
     *     if value is null, it will call incr()
     *     if value is long, it will call incrBy((long)params)
     */
    @Override
    @SuppressWarnings("checkstyle:AbbreviationAsWordInName")
    public void updateMetricFromRPC(Object value) {
        if (value == null) {
            incr();
        } else if (value instanceof Long) {
            incrBy((Long) value);
        } else {
            throw new RuntimeException("CountShellMetric updateMetricFromRPC params should be null or Long");
        }
    }
}