ExceptionHandler.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 com.hmsonline.storm.cassandra.exceptions;


import storm.trident.operation.TridentCollector;

import java.io.Serializable;

public interface ExceptionHandler extends Serializable {

    /**
     * Called by CassandraState when an exception is encountered.
     *
     * The TridentCollection parameter is provided for reporting
     * errors and optionally emitting tuples.
     *
     * Note that the <code>Collector</code> parameter may be null if
     * an exception occurs outside of a context where a TridentCollector
     * is available.
     *
     * @param ex
     * @param collector
     */
    void onException(Exception ex, TridentCollector collector);
}