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obsstore: also store the 'parents' field on disk

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We now store the `parents` field on disk. We use the same strategy as for
`date`: We stick it into the metadata. This is slow and dirty, but this is also
the only way we currently have.

At some point we'll have a new obsstore format to store this properly.
This commit is contained in:
Pierre-Yves David 2014-08-18 16:28:44 -07:00
parent 41733331bc
commit fd1f0f7321
1 changed files with 26 additions and 1 deletions
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27
mercurial/obsolete.py
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@ -173,9 +173,28 @@ def _readmarkers(data):
date = util.parsedate(decodemeta(metadata).pop('date', '0 0'))
except util.Abort:
date = (0., 0)
parents = None
if 'p2' in meta:
parents = (meta.pop('p1', None), meta.pop('p2', None))
elif 'p1' in meta:
parents = (meta.pop('p1', None),)
elif 'p0' in meta:
parents = ()
if parents is not None:
try:
parents = tuple(node.bin(p) for p in parents)
# if parent content is not a nodeid, drop the data
for p in parents:
if len(p) != 20:
parents = None
break
except TypeError:
# if content cannot be translated to nodeid drop the data.
parents = None
metadata = encodemeta(meta)
yield (pre, sucs, flags, metadata, date, None)
yield (pre, sucs, flags, metadata, date, parents)
def encodemeta(meta):
"""Return encoded metadata string to string mapping.
@ -371,6 +390,12 @@ def _encodeonemarker(marker):
pre, sucs, flags, metadata, date, parents = marker
metadata = decodemeta(metadata)
metadata['date'] = '%d %i' % date
if parents is not None:
if not parents:
# mark that we explicitly recorded no parents
metadata['p0'] = ''
for i, p in enumerate(parents, 1):
metadata['p%i' % i] = node.hex(p)
metadata = encodemeta(metadata)
nbsuc = len(sucs)
format = _fmfixed + (_fmnode * nbsuc)