CopyMapping copies the files in the (dest-to-src) map mapping from dst to src.

OnCopy sends an OnCopyStep observation to multiple observers.

OnCopyEnd sends an OnCopyEnd observation to multiple observers.

OnCopyStart sends an OnCopyStart observation to multiple observers.

OnCopyStep sends an OnCopyStep observation to multiple observers.

RecvMapping is shorthand for CopyMapping where the source is a Local.

SendMapping is shorthand for CopyMapping where the source is a Local.

Local implements Copier through os.

Message is the type of copy observation messages.

Copier provides a mockable interface for remote copying.

Observer is an interface for types that observe an SFTP file copy.

SFTP wraps an sftp.Client to adapt it to the Copier interface.