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dirnode: add ctime/mtime to metadata, update metadata-modifying APIs. Needs more testing and sanity checking.

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This commit is contained in:
Brian Warner
2008-02-08 18:43:47 -07:00
parent 18817c00a3
commit 622c477e31
3 changed files with 110 additions and 24 deletions
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39
src/allmydata/dirnode.py
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@ -1,5 +1,5 @@
import os
import os, time
from zope.interface import implements
from twisted.internet import defer
@ -190,6 +190,19 @@ class NewDirectoryNode:
d.addCallback(lambda children: children[name][1])
return d
def set_metadata_for(self, name, metadata):
if self.is_readonly():
return defer.fail(NotMutableError())
assert isinstance(metadata, dict)
d = self._read()
def _update(children):
children[name] = (children[name][0], metadata)
new_contents = self._pack_contents(children)
return self._node.replace(new_contents)
d.addCallback(_update)
d.addCallback(lambda res: self)
return d
def get_child_at_path(self, path):
"""Transform a child path into an IDirectoryNode or IFileNode.
@ -214,7 +227,7 @@ class NewDirectoryNode:
d.addCallback(_got)
return d
def set_uri(self, name, child_uri, metadata={}):
def set_uri(self, name, child_uri, metadata=None):
"""I add a child (by URI) at the specific name. I return a Deferred
that fires with the child node when the operation finishes. I will
replace any existing child of the same name.
@ -231,14 +244,14 @@ class NewDirectoryNode:
for e in entries:
if len(e) == 2:
name, child_uri = e
metadata = {}
metadata = None
else:
assert len(e) == 3
name, child_uri, metadata = e
node_entries.append( (name,self._create_node(child_uri),metadata) )
return self.set_nodes(node_entries)
def set_node(self, name, child, metadata={}):
def set_node(self, name, child, metadata=None):
"""I add a child at the specific name. I return a Deferred that fires
when the operation finishes. This Deferred will fire with the child
node that was just added. I will replace any existing child of the
@ -256,13 +269,27 @@ class NewDirectoryNode:
return defer.fail(NotMutableError())
d = self._read()
def _add(children):
now = time.time()
for e in entries:
if len(e) == 2:
name, child = e
metadata = {}
new_metadata = None
else:
assert len(e) == 3
name, child, metadata = e
name, child, new_metadata = e
if name in children:
metadata = children[name][1].copy()
else:
metadata = {"ctime": now,
"mtime": now}
if new_metadata is None:
# update timestamps
if "ctime" not in metadata:
metadata["ctime"] = now
metadata["mtime"] = now
else:
# just replace it
metadata = new_metadata.copy()
children[name] = (child, metadata)
new_contents = self._pack_contents(children)
return self._node.replace(new_contents)