org.apache.pulsar.functions.api.examples.window.UserMetricWindowFunction Maven / Gradle / Ivy
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* to you under the Apache License, Version 2.0 (the
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* with the License. You may obtain a copy of the License at
*
* 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 wants to keep track of
* the event time of each message sent.
*/
public class UserMetricWindowFunction implements WindowFunction {
@Override
public Void process(Collection> inputs, WindowContext context) throws Exception {
for (Record record : inputs) {
if (record.getEventTime().isPresent()) {
context.recordMetric("MessageEventTime", record.getEventTime().get().doubleValue());
}
}
return null;
}
}