| /** |
| * 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.datatorrent.contrib.rabbitmq; |
| |
| import com.datatorrent.api.DefaultInputPort; |
| |
| /** |
| * This is the base implementation of a single port RabbitMQ output operator. |
| * Subclasses should implement the methods which convert tuples to RabbitMQ messages. |
| * <p> |
| * Ports:<br> |
| * <b>Input</b>: Can have one input port<br> |
| * <b>Output</b>: no output port<br> |
| * <br> |
| * Properties:<br> |
| * None<br> |
| * <br> |
| * Compile time checks:<br> |
| * None<br> |
| * <br> |
| * Run time checks:<br> |
| * None<br> |
| * <br> |
| * <b>Benchmarks</b>: Blast as many tuples as possible in inline mode<br> |
| * <table border="1" cellspacing=1 cellpadding=1 summary="Benchmark table for AbstractSinglePortRabbitMQOutputOperator<K,V extends Number> operator template"> |
| * <tr><th>In-Bound</th><th>Out-bound</th><th>Comments</th></tr> |
| * <tr><td>One tuple per key per window per port</td><td><b>10 thousand K,V pairs/s</td><td>Out-bound rate is the main determinant of performance. Operator can process about 10 thousand unique (k,v immutable pairs) tuples/sec as RabbitMQ DAG. Tuples are assumed to be |
| * immutable. If you use mutable tuples and have lots of keys, the benchmarks may differ</td></tr> |
| * </table><br> |
| * </p> |
| * @displayName Abstract Single Port RabbitMQ Output |
| * @category Messaging |
| * @tags output operator |
| * |
| * @since 0.3.2 |
| */ |
| public abstract class AbstractSinglePortRabbitMQOutputOperator<T> extends AbstractRabbitMQOutputOperator |
| { |
| /** |
| * Users need to provide conversion of Tuple to message |
| * @param tuple |
| */ |
| public abstract void processTuple(T tuple); |
| |
| public final transient DefaultInputPort<T> inputPort = new DefaultInputPort<T>() |
| { |
| @Override |
| public void process(T tuple) |
| { |
| if(!skipProcessingTuple) |
| { |
| processTuple(tuple); // This is an abstract call |
| } |
| } |
| }; |
| } |