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dirnode.py: stop writing 'ctime' and 'mtime' fields. Includes documentation and test changes.

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david-sarah
2010-06-18 16:01:19 -07:00
parent 72e395d878
commit 4712875193
4 changed files with 127 additions and 143 deletions
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36
src/allmydata/dirnode.py
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@ -30,13 +30,11 @@ def update_metadata(metadata, new_metadata, now):
Timestamps are set according to the time 'now'."""
if metadata is None:
metadata = {'ctime': now,
'mtime': now,
'tahoe': {
'linkcrtime': now,
'linkmotime': now,
}
}
metadata = {}
old_ctime = None
if 'ctime' in metadata:
old_ctime = metadata['ctime']
if new_metadata is not None:
# Overwrite all metadata.
@ -48,29 +46,19 @@ def update_metadata(metadata, new_metadata, now):
if 'tahoe' in metadata:
newmd['tahoe'] = metadata['tahoe']
# For backwards compatibility with Tahoe < 1.4.0:
if 'ctime' not in newmd:
if 'ctime' in metadata:
newmd['ctime'] = metadata['ctime']
else:
newmd['ctime'] = now
if 'mtime' not in newmd:
newmd['mtime'] = now
metadata = newmd
else:
# For backwards compatibility with Tahoe < 1.4.0:
if 'ctime' not in metadata:
metadata['ctime'] = now
metadata['mtime'] = now
# update timestamps
sysmd = metadata.get('tahoe', {})
if 'linkcrtime' not in sysmd:
# In Tahoe < 1.4.0 we used the word 'ctime' to mean what Tahoe >= 1.4.0
# calls 'linkcrtime'.
assert 'ctime' in metadata
sysmd['linkcrtime'] = metadata['ctime']
# calls 'linkcrtime'. This field is only used if it was in the old metadata,
# and 'tahoe:linkcrtime' was not.
if old_ctime is not None:
sysmd['linkcrtime'] = old_ctime
else:
sysmd['linkcrtime'] = now
sysmd['linkmotime'] = now
metadata['tahoe'] = sysmd