org.apache.pulsar.functions.api.examples.window.PublishWindowFunction Maven / Gradle / Ivy
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* to you under the Apache License, Version 2.0 (the
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*
* http://www.apache.org/licenses/LICENSE-2.0
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package org.apache.pulsar.functions.api.examples.window;
import java.util.Collection;
import org.apache.pulsar.functions.api.Record;
import org.apache.pulsar.functions.api.WindowContext;
import org.apache.pulsar.functions.api.WindowFunction;
/**
* Example function that uses the built in publish function in the context
* to publish to a desired topic based on config.
*/
public class PublishWindowFunction implements WindowFunction {
@Override
public Void process(Collection> input, WindowContext context) throws Exception {
String publishTopic = (String) context.getUserConfigValueOrDefault("publish-topic", "publishtopic");
String output = String.format("%s!", input);
context.publish(publishTopic, output);
return null;
}
}