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Viewing changes to vendor/Twisted-10.0.0/twisted/spread/refpath.py

  • Committer: Jesse Andrews
  • Date: 2010-05-28 06:05:26 UTC
  • Revision ID: git-v1:bf6e6e718cdc7488e2da87b21e258ccc065fe499
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vendor/Twisted-10.0.0/twisted/spread/refpath.py
 
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# Copyright (c) 2001-2009 Twisted Matrix Laboratories.
 
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# See LICENSE for details.
 
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"""
 
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Path-based references for PB, and other reference-based protocols.
 
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Maintainer: Glyph Lefkowitz
 
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"""
 
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from copy import copy
 
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import os, warnings
 
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from twisted.python import log
 
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from twisted.spread.flavors import Referenceable, Viewable
 
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warnings.warn(
 
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    "twisted.spread.refpath is deprecated since Twisted 9.0.",
 
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    category=DeprecationWarning, stacklevel=2)
 
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### "Server"-side objects
 
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class PathReferenceContext:
 
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    def __init__(self, path, root):
 
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        self.metadata = {}
 
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        self.path = path
 
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        self.root = root
 
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    def __setitem__(self, key, item):
 
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        self.metadata[key] = item
 
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    def __getitem__(self, key):
 
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        return self.metadata[key]
 
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    def getObject(self):
 
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        o = self.root
 
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        for p in self.path:
 
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            o = o.getChild(p, self)
 
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        return o
 
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class PathReference:
 
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    def __init__(self):
 
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        self.children = {}
 
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    def getChild(self, child, ctx):
 
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        return self.children[child]
 
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class PathReferenceDirectory(Referenceable):
 
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    def __init__(self, root, prefix="remote"):
 
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        self.root = root
 
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        self.prefix = prefix
 
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    def remote_callPath(self, path, name, *args, **kw):
 
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        ctx = PathReferenceContext(path, self)
 
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        obj = ctx.getObject()
 
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        return apply(getattr(obj, "%s_%s" % (self.prefix, name)), args, kw)
 
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class PathReferenceContextDirectory(Referenceable):
 
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    def __init__(self, root, prefix="remote"):
 
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        self.root = root
 
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        self.prefix = prefix
 
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    def remote_callPath(self, path, name, *args, **kw):
 
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        ctx = PathReferenceContext(path, self)
 
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        obj = ctx.getObject()
 
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        return apply(getattr(obj, "%s_%s" % (self.prefix, name)),
 
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                     (ctx,)+args, kw)
 
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class PathViewDirectory(Viewable):
 
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    def __init__(self, root, prefix="view"):
 
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        self.root = root
 
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        self.prefix = prefix
 
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    def view_callPath(self, perspective, path, name, *args, **kw):
 
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        ctx = PathReferenceContext(path, self)
 
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        obj = ctx.getObject()
 
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        return apply(getattr(obj, "%s_%s" % (self.prefix, name)),
 
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                     (perspective,)+args, kw)
 
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class PathViewContextDirectory(Viewable):
 
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    def __init__(self, root, prefix="view"):
 
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        self.root = root
 
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        self.prefix = prefix
 
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    def view_callPath(self, perspective, path, name, *args, **kw):
 
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        ctx = PathReferenceContext(path, self)
 
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        obj = ctx.getObject()
 
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        return apply(getattr(obj, "%s_%s" % (self.prefix, name)),
 
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                     (perspective,ctx)+args, kw)
 
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### "Client"-side objects
 
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class RemotePathReference:
 
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    def __init__(self, ref, path):
 
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        self.ref = ref
 
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        self.path = path
 
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    def callRemote(self, name, *args, **kw):
 
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        apply(self.ref.callRemote,
 
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              ("callPath", self.path, name)+args, kw)