Source Map Variables

Key	Description
originalFilename	The name of the file that was read in.
fileDirectory	The absolute path of the directory in which the file resides.
fileSize	The size of the file in bytes.
fileLastModified	The last modified date of the file, as an epoch time in milliseconds.
pollId	A unique nanosecond timestamp that uniquely identifies the current polling window. If your File Reader polls 5 files, the messages for each file will have the same pollId.
pollSequenceId	An integer that starts at 1 and increments for every subsequent file in the current polling window. If your File Reader polls 5 files, the message(s) for the first file will have a pollSequenceId of 1, the message(s) for the second file will have a pollSequenceId of 2, and so on.
pollComplete	This is only present for the last file in the current polling window. The value of this entry is always equal to true. Use this to determine programmatically whether you are currently working with the last file in a poll. Note that if you have Batch Processing enabled, you will want to look at both the pollComplete and batchComplete variables to determine whether the current message is truly the "last" one. If both are true, then you know that you are on the last file in the polling window, and also on the last message in that file.

Variables only applicable to the Amazon S3 mode

Key	Description
s3BucketName	The name of the S3 bucket that the file belongs to.
s3ETag	The hex encoded 128-bit MD5 hash of the file contents as computed by Amazon S3.
s3Key	The key under which the file is stored in S3.
s3Owner	The owner of the S3 object, if present.
s3StorageClass	The storage class used for this file in S3 (e.g. STANDARD, STANDARD_IA).
s3Metadata	A MessageHeaders object representing the map of metadata/headers for the S3 object.