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https://issues.apache.org/jira/browse/BAHIR-73?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15686037#comment-15686037
]
ASF GitHub Bot commented on BAHIR-73:
-------------------------------------
Github user rmetzger commented on a diff in the pull request:
https://github.com/apache/bahir-flink/pull/8#discussion_r89061030
--- Diff:
flink-connector-akka/src/main/java/org/apache/flink/streaming/connectors/akka/utils/ReceiverActor.java
---
@@ -0,0 +1,122 @@
+/*
+ * 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.ActorSelection;
+import akka.actor.UntypedActor;
+import org.apache.flink.api.java.tuple.Tuple2;
+import
org.apache.flink.streaming.api.functions.source.SourceFunction.SourceContext;
+
+import java.util.Iterator;
+
+/**
+ * Generalized receiver actor which receives messages
+ * from the feeder or publisher actor.
+ */
+public class ReceiverActor extends UntypedActor {
+ // --- Fields set by the constructor
+ private final SourceContext<Object> ctx;
+
+ private final String urlOfPublisher;
+
+ private final boolean autoAck;
+
+ // --- Runtime fields
+ private ActorSelection remotePublisher;
+
+ public ReceiverActor(SourceContext<Object> ctx,
+ String urlOfPublisher,
+ boolean autoAck) {
+ this.ctx = ctx;
+ this.urlOfPublisher = urlOfPublisher;
+ this.autoAck = autoAck;
+ }
+
+ @Override
+ public void preStart() throws Exception {
+ remotePublisher = getContext().actorSelection(urlOfPublisher);
+ remotePublisher.tell(new SubscribeReceiver(getSelf()), getSelf());
+ }
+
+ @SuppressWarnings("unchecked")
+ @Override
+ public void onReceive(Object message)
+ throws Exception {
+ if (message instanceof Iterable) {
+ collect((Iterable<Object>) message);
+ } else if (message instanceof byte[]) {
+ byte[] messageBytes = (byte[]) message;
+ collect(messageBytes);
+ } else if (message instanceof Tuple2) {
+ Tuple2<Object, Long> messageTuple = (Tuple2<Object, Long>) message;
+ collect(messageTuple.f0, messageTuple.f1);
+ } else {
+ collect(message);
+ }
+
+ if (autoAck) {
+ getSender().tell("ack", getSelf());
+ }
+ }
+
+ /**
+ * To handle {@link Iterable} data
+ *
+ * @param data data received from feeder actor
+ */
+ private void collect(Iterable<Object> data) {
+ Iterator<Object> iterator = data.iterator();
+ while (iterator.hasNext()) {
+ ctx.collect(iterator.next());
+ }
+ }
+
+ /**
+ * To handle byte array data
+ *
+ * @param bytes data received from feeder actor
+ */
+ private void collect(byte[] bytes) {
--- End diff --
What is the purpose of this message? There is no special treatment for byte
arrays
> [bahir-flink] flink-streaming-akka source connector
> ---------------------------------------------------
>
> Key: BAHIR-73
> URL: https://issues.apache.org/jira/browse/BAHIR-73
> Project: Bahir
> Issue Type: New Feature
> Components: Flink Streaming Connectors
> Reporter: Subhobrata Dey
> Fix For: Flink-0.1
>
>
> Hello,
> This issue is created to propose the idea of having a flink-streaming-akka
> source connector.
> The source connector can be used to receive messages from an Akka feeder or
> publisher actor & these messages can then be processed using flink streaming.
> The source connector has the following features.
> 1. It can supports several different message formats like iterable data,
> bytes array & data with timestamp.
> 2. It can send back acknowledgements to the feeder actor.
> Thanks & regards,
> Subhobrata
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