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nodemaker: teach nodemaker how to create MDMF mutable files

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This commit is contained in:
Kevan Carstensen 2011-08-01 18:42:58 -07:00
parent 126d1ad010
commit 4c48e2e1b6
1 changed files with 16 additions and 5 deletions
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21
src/allmydata/nodemaker.py
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@ -1,10 +1,12 @@
import weakref
from zope.interface import implements
from allmydata.interfaces import INodeMaker
from allmydata.util.assertutil import precondition
from allmydata.interfaces import INodeMaker, SDMF_VERSION
from allmydata.immutable.literal import LiteralFileNode
from allmydata.immutable.filenode import ImmutableFileNode, CiphertextFileNode
from allmydata.immutable.upload import Data
from allmydata.mutable.filenode import MutableFileNode
from allmydata.mutable.publish import MutableData
from allmydata.dirnode import DirectoryNode, pack_children
from allmydata.unknown import UnknownNode
from allmydata import uri
@ -87,17 +89,26 @@ class NodeMaker:
return self._create_dirnode(filenode)
return None
def create_mutable_file(self, contents=None, keysize=None):
def create_mutable_file(self, contents=None, keysize=None,
version=SDMF_VERSION):
n = MutableFileNode(self.storage_broker, self.secret_holder,
self.default_encoding_parameters, self.history)
d = self.key_generator.generate(keysize)
d.addCallback(n.create_with_keys, contents)
d.addCallback(n.create_with_keys, contents, version=version)
d.addCallback(lambda res: n)
return d
def create_new_mutable_directory(self, initial_children={}):
def create_new_mutable_directory(self, initial_children={},
version=SDMF_VERSION):
# initial_children must have metadata (i.e. {} instead of None)
for (name, (node, metadata)) in initial_children.iteritems():
precondition(isinstance(metadata, dict),
"create_new_mutable_directory requires metadata to be a dict, not None", metadata)
node.raise_error()
d = self.create_mutable_file(lambda n:
pack_children(initial_children, n.get_writekey()))
MutableData(pack_children(initial_children,
n.get_writekey())),
version=version)
d.addCallback(self._create_dirnode)
return d