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"""Implementation of Transport that adapts another transport to be readonly."""
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from bzrlib.errors import TransportNotPossible
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from bzrlib.transport import get_transport, Transport, Server
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class ReadonlyTransportDecorator(Transport):
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from bzrlib.transport.decorator import TransportDecorator, DecoratorServer
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class ReadonlyTransportDecorator(TransportDecorator):
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"""A decorator that can convert any transport to be readonly.
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This does not use __getattr__ hacks as we need to ensure that
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new writable methods are overridden correctly.
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This is requested via the 'readonly+' prefix to get_transport().
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def __init__(self, url, _decorated=None):
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"""Set the 'base' path where files will be stored.
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_decorated is a private parameter for cloning."""
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assert url.startswith('readonly+')
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decorated_url = url[len('readonly+'):]
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if _decorated is None:
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self._decorated = get_transport(decorated_url)
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self._decorated = _decorated
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super(ReadonlyTransportDecorator, self).__init__(
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"readonly+" + self._decorated.base)
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def clone(self, offset=None):
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"""See Transport.clone()."""
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decorated_clone = self._decorated.clone(offset)
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return ReadonlyTransportDecorator("readonly+" + decorated_clone.base,
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def abspath(self, relpath):
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"""See Transport.abspath()."""
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return "readonly+" + self._decorated.abspath(relpath)
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def append(self, relpath, f):
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"""See Transport.append()."""
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raise TransportNotPossible('readonly transport')
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def has(self, relpath):
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"""See Transport.has()."""
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return self._decorated.has(relpath)
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def _get_url_prefix(self):
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"""Readonly transport decorators are invoked via 'readonly+'"""
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def delete(self, relpath):
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"""See Transport.delete()."""
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"""See Transport.delete_tree()."""
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raise TransportNotPossible('readonly transport')
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def get(self, relpath):
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"""See Transport.get()."""
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return self._decorated.get(relpath)
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def put(self, relpath, f, mode=None):
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"""See Transport.put()."""
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raise TransportNotPossible('readonly transport')
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"""See Transport.is_readonly."""
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"""See Transport.listable."""
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return self._decorated.listable()
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def iter_files_recursive(self):
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"""See Transport.iter_files_recursive()."""
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return self._decorated.iter_files_recursive()
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def list_dir(self, relpath):
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"""See Transport.list_dir()."""
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return self._decorated.list_dir(relpath)
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def rmdir(self, relpath):
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"""See Transport.rmdir."""
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raise TransportNotPossible('readonly transport')
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def should_cache(self):
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"""See Transport.should_cache()."""
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return self._decorated.should_cache()
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def stat(self, relpath):
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"""See Transport.stat()."""
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return self._decorated.stat(relpath)
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def lock_read(self, relpath):
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"""See Transport.lock_read."""
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return self._decorated.lock_read(relpath)
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def lock_write(self, relpath):
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"""See Transport.lock_write."""
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raise TransportNotPossible('readonly transport')
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class ReadonlyServer(Server):
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class ReadonlyServer(DecoratorServer):
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"""Server for the ReadonlyTransportDecorator for testing with."""
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def setUp(self, server=None):
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"""See bzrlib.transport.Server.setUp.
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:server: decorate the urls given by server. If not provided a
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LocalServer is created.
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if server is not None:
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self._made_server = False
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self._server = server
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from bzrlib.transport.local import LocalRelpathServer
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self._made_server = True
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self._server = LocalRelpathServer()
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"""See bzrlib.transport.Server.tearDown."""
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if self._made_server:
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self._server.tearDown()
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def get_bogus_url(self):
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"""See bzrlib.transport.Server.get_bogus_url."""
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return "readonly+" + self._server.get_bogus_url()
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"""See bzrlib.transport.Server.get_url."""
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return "readonly+" + self._server.get_url()
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def get_decorator_class(self):
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return ReadonlyTransportDecorator
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def get_test_permutations():
added
removed
bzrlib/transport/readonly.py
