Package io.aws.lambda.events.s3

Class S3ObjectLambdaEvent

  • public class S3ObjectLambdaEvent
extends java.lang.Object
    Event to allow transformations to occur before an S3 object is returned to the calling service. Documentation Writing and debugging Lambda functions for S3 Object Lambda Access Points Example: 
     import com.amazonaws.services.lambda.runtime.Context;
 import com.amazonaws.services.lambda.runtime.events.S3ObjectLambdaEvent;
 import org.apache.http.client.fluent.Request;
 import software.amazon.awssdk.services.s3.S3Client;
 import software.amazon.awssdk.services.s3.model.WriteGetObjectResponseRequest;

 import java.io.IOException;

 import static software.amazon.awssdk.core.sync.RequestBody.fromString;

 public class S3ObjectRequestHandler {

      private static final S3Client s3Client = S3Client.create();

      public void handleRequest(S3ObjectLambdaEvent event, Context context) throws IOException {
          String s3Body = Request.Get(event.inputS3Url()).execute().returnContent().asString();

          String responseBody = s3Body.toUpperCase();

          WriteGetObjectResponseRequest request = WriteGetObjectResponseRequest.builder()
              .requestRoute(event.outputRoute())
              .requestToken(event.outputToken())
              .build();
          s3Client.writeGetObjectResponse(request, fromString(responseBody));
      }
 }

    • Constructor Detail

      • S3ObjectLambdaEvent

        public S3ObjectLambdaEvent()

    • Method Detail

      • inputS3Url

        public java.lang.String inputS3Url()
        A pre-signed URL that can be used to fetch the original object from Amazon S3. The URL is signed using the original caller's identity, and their permissions will apply when the URL is used. If there are signed headers in the URL, the Lambda function must include these in the call to Amazon S3, except for the Host.
        Returns:
        A pre-signed URL that can be used to fetch the original object from Amazon S3.

      • outputRoute

        public java.lang.String outputRoute()
        A routing token that is added to the S3 Object Lambda URL when the Lambda function calls the S3 API WriteGetObjectResponse.
        Returns:
        the outputRoute

      • outputToken

        public java.lang.String outputToken()
        An opaque token used by S3 Object Lambda to match the WriteGetObjectResponse call with the original caller.
        Returns:
        the outputToken