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immutable: define a new interface IImmutableFileURI and declare that CHKFileURI and LiteralFileURI provide it

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This commit is contained in:
Zooko O'Whielacronx 2009-01-07 12:24:51 -07:00
parent c01cfc0035
commit 2e762f39f6
2 changed files with 7 additions and 4 deletions
src/allmydata
interfaces.pyuri.py

3
src/allmydata/interfaces.py

@ -392,6 +392,9 @@ class IFileURI(Interface):
def get_size(): def get_size():
"""Return the length (in bytes) of the file that I represent.""" """Return the length (in bytes) of the file that I represent."""
class IImmutableFileURI(IFileURI):
pass
class IMutableFileURI(Interface): class IMutableFileURI(Interface):
"""I am a URI which represents a mutable filenode.""" """I am a URI which represents a mutable filenode."""
class INewDirectoryURI(Interface): class INewDirectoryURI(Interface):

8
src/allmydata/uri.py

@ -4,8 +4,8 @@ from zope.interface import implements
from twisted.python.components import registerAdapter from twisted.python.components import registerAdapter
from allmydata import storage from allmydata import storage
from allmydata.util import base32, hashutil from allmydata.util import base32, hashutil
from allmydata.interfaces import IURI, IDirnodeURI, IFileURI, IVerifierURI, \ from allmydata.interfaces import IURI, IDirnodeURI, IFileURI, IImmutableFileURI, \
IMutableFileURI, INewDirectoryURI, IReadonlyNewDirectoryURI IVerifierURI, IMutableFileURI, INewDirectoryURI, IReadonlyNewDirectoryURI
# the URI shall be an ascii representation of the file. It shall contain # the URI shall be an ascii representation of the file. It shall contain
# enough information to retrieve and validate the contents. It shall be # enough information to retrieve and validate the contents. It shall be
@ -43,7 +43,7 @@ class _BaseURI:
return self.storage_index return self.storage_index
class CHKFileURI(_BaseURI): class CHKFileURI(_BaseURI):
implements(IURI, IFileURI) implements(IURI, IImmutableFileURI)
STRING_RE=re.compile('^URI:CHK:'+BASE32STR_128bits+':'+ STRING_RE=re.compile('^URI:CHK:'+BASE32STR_128bits+':'+
BASE32STR_256bits+':'+NUMBER+':'+NUMBER+':'+NUMBER+ BASE32STR_256bits+':'+NUMBER+':'+NUMBER+':'+NUMBER+
@ -153,7 +153,7 @@ class CHKFileVerifierURI(_BaseURI):
class LiteralFileURI(_BaseURI): class LiteralFileURI(_BaseURI):
implements(IURI, IFileURI) implements(IURI, IImmutableFileURI)
STRING_RE=re.compile('^URI:LIT:'+base32.BASE32STR_anybytes+'$') STRING_RE=re.compile('^URI:LIT:'+base32.BASE32STR_anybytes+'$')
HUMAN_RE=re.compile('^'+OPTIONALHTTPLEAD+'URI'+SEP+'LIT'+SEP+base32.BASE32STR_anybytes+'$') HUMAN_RE=re.compile('^'+OPTIONALHTTPLEAD+'URI'+SEP+'LIT'+SEP+base32.BASE32STR_anybytes+'$')