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| <h1 id="flink-akka-connector">Flink Akka Connector</h1> |
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| <p>This connector provides a sink to <a href="http://akka.io/">Akka</a> source actors in an ActorSystem. |
| To use this connector, add the following dependency to your project:</p> |
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| <div class="language-plaintext highlighter-rouge"><div class="highlight"><pre class="highlight"><code><dependency> |
| <groupId>org.apache.bahir</groupId> |
| <artifactId>flink-connector-akka_2.11</artifactId> |
| <version>1.0</version> |
| </dependency> |
| </code></pre></div></div> |
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| <p><em>Version Compatibility</em>: This module is compatible with Akka 2.0+.</p> |
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| <p>Note that the streaming connectors are not part of the binary distribution of Flink. You need to link them into your job jar for cluster execution. |
| See how to link with them for cluster execution <a href="https://ci.apache.org/projects/flink/flink-docs-release-1.2/dev/linking.html">here</a>.</p> |
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| <h2 id="configuration">Configuration</h2> |
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| <p>The configurations for the Receiver Actor System in Flink Akka connector can be created using the standard typesafe <code class="language-plaintext highlighter-rouge">Config (com.typesafe.config.Config)</code> object.</p> |
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| <p>To enable acknowledgements, the custom configuration <code class="language-plaintext highlighter-rouge">akka.remote.auto-ack</code> can be used.</p> |
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| <p>The user can set any of the default configurations allowed by Akka as well as custom configurations allowed by the connector.</p> |
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| <p>A sample configuration can be defined as follows:</p> |
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| <div class="language-plaintext highlighter-rouge"><div class="highlight"><pre class="highlight"><code>String configFile = getClass().getClassLoader() |
| .getResource("feeder_actor.conf").getFile(); |
| Config config = ConfigFactory.parseFile(new File(configFile)); |
| </code></pre></div></div> |
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| <h2 id="message-types">Message Types</h2> |
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| <p>There are 3 different kind of message types which the receiver Actor in Flink Akka connector can receive.</p> |
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| <ul> |
| <li> |
| <p>message containing <code class="language-plaintext highlighter-rouge">Iterable<Object></code> data</p> |
| </li> |
| <li> |
| <p>message containing generic <code class="language-plaintext highlighter-rouge">Object</code> data</p> |
| </li> |
| <li> |
| <p>message containing generic <code class="language-plaintext highlighter-rouge">Object</code> data and a <code class="language-plaintext highlighter-rouge">Timestamp</code> value passed as <code class="language-plaintext highlighter-rouge">Tuple2<Object, Long></code>.</p> |
| </li> |
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