Question

I’ve been struggling with this for way to long –

def aws_file_exists? filename
 begin
   @s3_interface.get('bucket', filename)
   return true
 catch Aws::AwsError, Aws::AwsError2, NoSuchKey, RuntimeError, AmazonError, AWSError
   return false
 end
end

Only, it doesn’t catch the !(@^%@&$*%# error, which reports as:

Aws::AwsError: NoSuchKey: The specified key does not exist.

What am I doing wrong / what is the error type that I need to be catching?

Answer 1

Does this help?

begin
  # blah blah
rescue Aws::AwsError => ex
  return false
end

More importantly, it should be begin ... rescue ... end. You’re probably confusing it with try ... catch.