| /* |
| * 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.flink.streaming.connectors.akka.utils; |
| |
| import akka.actor.ActorRef; |
| import akka.actor.UntypedActor; |
| import org.apache.flink.api.java.tuple.Tuple2; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| public class FeederActor extends UntypedActor { |
| |
| public enum MessageTypes { |
| SINGLE_DATA, ITERABLE_DATA, BYTES_DATA, |
| SINGLE_DATA_WITH_TIMESTAMP |
| } |
| |
| private static final Logger LOG = LoggerFactory.getLogger(FeederActor.class); |
| |
| private final MessageTypes messageType; |
| |
| public FeederActor(MessageTypes messageType) { |
| this.messageType = messageType; |
| } |
| |
| @Override |
| public void onReceive(Object message) { |
| if (message instanceof SubscribeReceiver) { |
| ActorRef receiver = ((SubscribeReceiver) message).getReceiverActor(); |
| |
| Object data; |
| switch (messageType) { |
| case SINGLE_DATA: |
| data = createSingleDataMessage(); |
| break; |
| case ITERABLE_DATA: |
| data = createIterableOfMessages(); |
| break; |
| case BYTES_DATA: |
| data = createByteMessages(); |
| break; |
| case SINGLE_DATA_WITH_TIMESTAMP: |
| data = createTimestampMessage(); |
| break; |
| default: |
| throw new RuntimeException("Message format specified is incorrect"); |
| } |
| receiver.tell(data, getSelf()); |
| } else if (message instanceof String) { |
| Message.ACK_MESSAGE = message.toString(); |
| } else if (message instanceof UnsubscribeReceiver) { |
| LOG.info("Stop actor!"); |
| } |
| } |
| |
| private Object createSingleDataMessage() { |
| return Message.WELCOME_MESSAGE; |
| } |
| |
| private List<Object> createIterableOfMessages() { |
| List<Object> messages = new ArrayList<Object>(); |
| |
| messages.add(Message.WELCOME_MESSAGE); |
| messages.add(Message.FEEDER_MESSAGE); |
| |
| return messages; |
| } |
| |
| private byte[] createByteMessages() { |
| byte[] message = Message.WELCOME_MESSAGE.getBytes(); |
| return message; |
| } |
| |
| private Tuple2<Object, Long> createTimestampMessage() { |
| Tuple2<Object, Long> message = new Tuple2<Object, Long>(); |
| message.f0 = Message.WELCOME_MESSAGE; |
| message.f1 = System.currentTimeMillis(); |
| |
| return message; |
| } |
| } |