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  • # Copyright 2019 PrivateStorage.io, LLC
    #
    # Licensed under the Apache License, Version 2.0 (the "License");
    # you may not use this file except in compliance with the License.
    # You may obtain a copy of the License at
    #
    #     http://www.apache.org/licenses/LICENSE-2.0
    #
    # Unless required by applicable law or agreed to in writing, software
    # distributed under the License is distributed on an "AS IS" BASIS,
    # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    # See the License for the specific language governing permissions and
    # limitations under the License.
    
    """
    A Tahoe-LAFS ``IStorageServer`` implementation which presents tokens
    per-call to prove authorization for writes and lease updates.
    
    This is the client part of a storage access protocol.  The server part is
    implemented in ``_storage_server.py``.
    """
    
    import attr
    
    from zope.interface import (
        implementer,
    )
    
    from allmydata.interfaces import (
        IStorageServer,
    )
    
    @implementer(IStorageServer)
    @attr.s
    class SecureAccessTokenAuthorizerStorageClient(object):
        """
        XXX
        """
        _get_rref = attr.ib()
        _get_tokens = attr.ib()
    
        @property
        def _rref(self):
            return self._get_rref()
    
        def get_version(self):
            return self._rref.callRemote(
                "get_version",
            )
    
        def allocate_buckets(
                self,
                storage_index,
                renew_secret,
                cancel_secret,
                sharenums,
                allocated_size,
                canary,
        ):
            return self._rref.callRemote(
                "allocate_buckets",
                self._get_tokens(),
                storage_index,
                renew_secret,
                cancel_secret,
                sharenums,
                allocated_size,
                canary,
            )