Package com.amazonaws.serverless.proxy

Interface ExceptionHandler<ResponseType>

Type Parameters:
ResponseType - The type for the Lambda return value. Implementing sub-classes are required to return a valid instance of the response type.
All Known Implementing Classes:
AwsProxyExceptionHandler
public interface ExceptionHandler<ResponseType>
Implementing sub-classes of this interface are used by container objects to handle exceptions. Normally, exceptions are handled by the client applications directly within the container and a valid HTTP response is expected. This handler is used for exceptions thrown by the library while marshalling and unmarshalling requests and responses. The interface declares two methods. A typed handle method for requests that are being proxied using a request and response type LambdaContainerHandler, and a stream-based handle method for Lambda's RequestStreamHandler.
See Also:

  • Method Summary

    Modifier and Type
    Method
    Description
    ResponseType
    handle(Throwable ex)
    The handle method is called by the container object whenever an exception occurs in the proxy method for typed calls
    void
    handle(Throwable ex, OutputStream stream)
    This handle implementation is called whenever an exception occurs in the stream-based proxy method.

  • Method Details

    • handle

      ResponseType handle(Throwable ex)
      The handle method is called by the container object whenever an exception occurs in the proxy method for typed calls
      Parameters:
      ex - The exception thrown by the application
      Returns:
      A valid response object

    • handle

      void handle(Throwable ex, OutputStream stream) throws IOException
      This handle implementation is called whenever an exception occurs in the stream-based proxy method.
      Parameters:
      ex - The exception thrown by the application
      stream - The OutputStream where the exception will be written
      Throws:
      IOException - When the exception handler fails to write to the OutputStream