def init_stats():
'''Initialise a StatsCollector for the application to use.'''
stattr = [
# rsync-style 'savings' measurement.
'bytes_total',
'bytes_transferred',
'metadata_bytes_transferred',
# fetch_contents()
'content_fetches',
'metadata_fetches',
# Fetch stats.
'file_contents_differed',
'file_metadata_differed',
'directory_metadata_differed',
'link_contents_differed',
'link_metadata_differed',
]
return StatsCollector.init('AppStats', stattr)
