Tell me how can I get the file name that trigger lambda from s3 inside lambda code in java? My task is to copy a file from s3 which goes there to my sftp server use lambda. In order for me not to copy every time all the files from the folder, I need to find out which file calling lambda.
P.S. Thank you in advance
Sample event that is sent to Lambda is here.
We can use java-events jar, will give us S3Event class with exact schema.
We need to loop on records and find s3.object.key:
package com.test;
import com.amazonaws.services.lambda.runtime.Context;
import com.amazonaws.services.lambda.runtime.RequestHandler;
import com.amazonaws.services.lambda.runtime.events.S3Event;
public class MyHandler implements RequestHandler<S3Event, String> {
@Override
public String handleRequest(S3Event request, Context context) {
request.getRecords().forEach(record -> {
System.out.println(record.getS3().getObject().getKey());
});
return "success";
}
}