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dirnode: add 'tahoe'/'linkcrtime' and 'tahoe'/'linkmotime' to take the place of what 'mtime'/'ctime' originally did, and make the 'tahoe' subdict be unwritable through the set_children API

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Also add extensive documentation in docs/frontends/webapi.txt about the behaviors of these values.  See ticket #628.
This commit is contained in:
Zooko O'Whielacronx
2009-04-11 15:52:05 -07:00
parent 664b69dd8d
commit 9729753692
8 changed files with 245 additions and 86 deletions
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38
src/allmydata/dirnode.py
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@ -83,15 +83,41 @@ class Adder:
metadata = children[name][1].copy()
else:
metadata = {"ctime": now,
"mtime": now}
if new_metadata is None:
# update timestamps
"mtime": now,
"tahoe": {
"linkcrtime": now,
"linkmotime": now,
}
}
if new_metadata is not None:
# Overwrite all metadata.
newmd = new_metadata.copy()
# Except 'tahoe'.
if newmd.has_key('tahoe'):
del newmd['tahoe']
if metadata.has_key('tahoe'):
newmd['tahoe'] = metadata['tahoe']
metadata = newmd
else:
# For backwards compatibility with Tahoe < 1.4.0:
if "ctime" not in metadata:
metadata["ctime"] = now
metadata["mtime"] = now
else:
# just replace it
metadata = new_metadata.copy()
# update timestamps
sysmd = metadata.get('tahoe', {})
if not 'linkcrtime' in sysmd:
if "ctime" in metadata:
# In Tahoe < 1.4.0 we used the word "ctime" to mean what Tahoe >= 1.4.0
# calls "linkcrtime".
sysmd["linkcrtime"] = metadata["ctime"]
else:
sysmd["linkcrtime"] = now
sysmd["linkmotime"] = now
children[name] = (child, metadata)
new_contents = self.node._pack_contents(children)
return new_contents