在Lambda函数中使用Kinesis消费者应用程序去处理所有的Kinesis流。以下是一个示例代码:
import com.amazonaws.services.lambda.runtime.Context;
import com.amazonaws.services.lambda.runtime.RequestHandler;
import com.amazonaws.services.lambda.runtime.events.KinesisEvent;
import com.amazonaws.services.lambda.runtime.events.KinesisEvent.KinesisEventRecord;
import com.amazonaws.services.kinesis.clientlibrary.interfaces.IRecordProcessor;
import com.amazonaws.services.kinesis.clientlibrary.interfaces.IRecordProcessorFactory;
import com.amazonaws.services.kinesis.clientlibrary.lib.worker.KinesisClientLibConfiguration;
import com.amazonaws.services.kinesis.clientlibrary.lib.worker.KinesisClientLibShutdownHelper;
import com.amazonaws.services.kinesis.clientlibrary.lib.worker.Worker;
public class MyLambdaFunction implements RequestHandler {
static String streamName = "my-stream-name";
static String appName = "my-kinesis-app";
static String regionName = "us-west-2";
static String workerId = "worker-001";
public Void handleRequest(KinesisEvent event, Context context) {
KinesisClientLibConfiguration config = new KinesisClientLibConfiguration(appName, streamName,
null, workerId);
config.withRegionName(regionName);
IRecordProcessorFactory recordProcessorFactory = new MyRecordProcessorFactory();
Worker worker = new Worker.Builder()
.recordProcessorFactory(recordProcessorFactory)
.config(config)
.build();
worker.run();
// Shutdown the worker when the Lambda function is terminated
KinesisClientLibShutdownHelper.shutdown(worker, config.getWorkerIdentifier());
return null;
}
private class MyRecordProcessorFactory implements IRecordProcessorFactory {
public IRecordProcessor createProcessor() {
return new MyRecordProcessor();
}
}
private class MyRecordProcessor implements IRecordProcessor {
public void initialize(String shardId) {}
public void processRecords(List records, IRecordProcessorCheckpointer checkpointer) {
for (KinesisEventRecord rec : records) {
String data = new String(rec.getKinesis().getData().array());
System.out.println("Received data: " + data);
}
checkpointer.checkpoint();
}
public void shutdown(IRecordProcessorCheckpointer checkpointer, ShutdownReason reason) {
if (reason == ShutdownReason.TERMINATE) {
checkpointer.checkpoint();
}
}
}
}
这个Lambda函数使用Kinesis消费者应用程序去处理所有的Kinesis流。在处理程序中,每次接收到Kinesis事件时,数据都会被打印到控制台。可以根据需要修改初始化日志输出的方式。