com.espertech.esperio.kafka.EsperIOKafkaInputProcessorDefault Maven / Gradle / Ivy
/*
***************************************************************************************
* Copyright (C) 2006 EsperTech, Inc. All rights reserved. *
* http://www.espertech.com/esper *
* http://www.espertech.com *
* ---------------------------------------------------------------------------------- *
* The software in this package is published under the terms of the GPL license *
* a copy of which has been included with this distribution in the license.txt file. *
***************************************************************************************
*/
package com.espertech.esperio.kafka;
import com.espertech.esper.client.EPServiceProvider;
import com.espertech.esper.client.time.CurrentTimeSpanEvent;
import com.espertech.esper.util.JavaClassHelper;
import org.apache.kafka.clients.consumer.ConsumerRecord;
import org.apache.kafka.clients.consumer.ConsumerRecords;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class EsperIOKafkaInputProcessorDefault implements EsperIOKafkaInputProcessor {
private final static Logger log = LoggerFactory.getLogger(EsperIOKafkaInputProcessorDefault.class);
private EPServiceProvider engine;
private EsperIOKafkaInputTimestampExtractor timestampExtractor;
public void init(EsperIOKafkaInputProcessorContext context) {
this.engine = context.getEngine();
String timestampExtractorClassName = context.getProperties().getProperty(EsperIOKafkaConfig.INPUT_TIMESTAMPEXTRACTOR_CONFIG);
if (timestampExtractorClassName != null) {
timestampExtractor = (EsperIOKafkaInputTimestampExtractor) JavaClassHelper.instantiate(EsperIOKafkaInputTimestampExtractor.class, timestampExtractorClassName, context.getEngine().getEngineImportService().getClassForNameProvider());
}
}
public void process(ConsumerRecords records) {
for (ConsumerRecord record : records) {
if (timestampExtractor != null) {
long timestamp = timestampExtractor.extract(record);
if (log.isDebugEnabled()) {
log.debug("Sending time span {}", timestamp);
}
engine.getEPRuntime().sendEvent(new CurrentTimeSpanEvent(timestamp));
}
if (record.value() != null) {
if (log.isDebugEnabled()) {
log.debug("Sending event {}", record.value().toString());
}
engine.getEPRuntime().sendEvent(record.value());
}
}
}
public void close() {
}
}