offloaded: move interfaces to interfaces.py, start implementing backend

src/allmydata/interfaces.py

@@ -1256,3 +1256,51 @@ class RIControlClient(RemoteInterface):
         """
 
         return DictOf(Nodeid, float)
+
+UploadResults = DictOf(str, str)
+
+class RIEncryptedUploadable(RemoteInterface):
+    __remote_name__ = "RIEncryptedUploadable.tahoe.allmydata.com"
+
+    def get_size():
+        return int
+
+    def set_segment_size(segment_size=long):
+        return None
+
+    def read_encrypted(offset=long, length=long):
+        return str
+
+    def get_plaintext_hashtree_leaves(first=int, last=int):
+        return ListOf(Hash)
+
+    def get_plaintext_hash():
+        return Hash
+
+
+class RIUploadHelper(RemoteInterface):
+    __remote_name__ = "RIUploadHelper.tahoe.allmydata.com"
+
+    def upload(reader=RIEncryptedUploadable):
+        return UploadResults
+
+
+class RIHelper(RemoteInterface):
+    __remote_name__ = "RIHelper.tahoe.allmydata.com"
+
+    def upload(si=StorageIndex):
+        """See if a file with a given storage index needs uploading. The
+        helper will ask the appropriate storage servers to see if the file
+        has already been uploaded. If so, the helper will return a set of
+        'upload results' that includes whatever hashes are needed to build
+        the read-cap, and perhaps a truncated sharemap.
+
+        If the file has not yet been uploaded (or if it was only partially
+        uploaded), the helper will return an empty upload-results dictionary
+        and also an RIUploadHelper object that will take care of the upload
+        process. The client should call upload() on this object and pass it a
+        reference to an RIEncryptedUploadable object that will provide
+        ciphertext. When the upload is finished, the upload() method will
+        finish and return the upload results.
+        """
+        return (UploadResults, ChoiceOf(RIUploadHelper, None))

src/allmydata/offloaded.py

@@ -1,66 +1,19 @@
 
 from zope.interface import implements
 from twisted.application import service
-from foolscap import RemoteInterface, Referenceable
-from foolscap.schema import DictOf, ChoiceOf, ListOf
-from allmydata.interfaces import StorageIndex, Hash
+from twisted.internet import defer
+from foolscap import Referenceable
 from allmydata.util import hashutil
-
-UploadResults = DictOf(str, str)
-
-class RIEncryptedUploadable(RemoteInterface):
-    __remote_name__ = "RIEncryptedUploadable.tahoe.allmydata.com"
-
-    def get_size():
-        return int
-
-    def set_segment_size(segment_size=long):
-        return None
-
-    def read_encrypted(offset=long, length=long):
-        return str
-
-    def get_plaintext_hashtree_leaves(first=int, last=int):
-        return ListOf(Hash)
-
-    def get_plaintext_hash():
-        return Hash
+from allmydata import upload, interfaces
 
 
-class RIUploadHelper(RemoteInterface):
-    __remote_name__ = "RIUploadHelper.tahoe.allmydata.com"
 
-    def upload(reader=RIEncryptedUploadable):
-        return UploadResults
-
-
-class RIHelper(RemoteInterface):
-    __remote_name__ = "RIHelper.tahoe.allmydata.com"
-
-    def upload(si=StorageIndex):
-        """See if a file with a given storage index needs uploading. The
-        helper will ask the appropriate storage servers to see if the file
-        has already been uploaded. If so, the helper will return a set of
-        'upload results' that includes whatever hashes are needed to build
-        the read-cap, and perhaps a truncated sharemap.
-
-        If the file has not yet been uploaded (or if it was only partially
-        uploaded), the helper will return an empty upload-results dictionary
-        and also an RIUploadHelper object that will take care of the upload
-        process. The client should call upload() on this object and pass it a
-        reference to an RIEncryptedUploadable object that will provide
-        ciphertext. When the upload is finished, the upload() method will
-        finish and return the upload results.
-        """
-        return (UploadResults, ChoiceOf(RIUploadHelper, None))
-
-
-class CHKUploadHelper(Referenceable):
+class CHKUploadHelper(Referenceable, upload.CHKUploader):
     """I am the helper-server -side counterpart to AssistedUploader. I handle
     peer selection, encoding, and share pushing. I read ciphertext from the
     remote AssistedUploader.
     """
-    implements(RIUploadHelper)
+    implements(interfaces.RIUploadHelper)
 
     def __init__(self, storage_index, helper):
         self._finished = False
@@ -68,10 +21,11 @@ class CHKUploadHelper(Referenceable):
         self._helper = helper
         self._log_number = self._helper.log("CHKUploadHelper starting")
 
-    def log(self, msg, parent=None):
-        if parent is None:
-            parent = self._log_number
-        return self._client.log(msg, parent=parent)
+        self._client = helper.parent
+        self._wait_for_numpeers = None
+        self._options = {}
+
+        self.set_params( (3,7,10) ) # GACK
 
     def start(self):
         # determine if we need to upload the file. If so, return ({},self) .
@@ -81,15 +35,48 @@ class CHKUploadHelper(Referenceable):
     def remote_upload(self, reader):
         # reader is an RIEncryptedUploadable. I am specified to return an
         # UploadResults dictionary.
-        return {'uri_extension_hash': hashutil.uri_extension_hash("")}
+
+        eu = CiphertextReader(reader, self._storage_index)
+        d = self.start_encrypted(eu)
+        def _done(res):
+            (uri_extension_hash, needed_shares, total_shares, size) = res
+            return {'uri_extension_hash': uri_extension_hash}
+        d.addCallback(_done)
+        return d
 
     def finished(self, res):
         self._finished = True
         self._helper.upload_finished(self._storage_index)
 
+class CiphertextReader:
+    implements(interfaces.IEncryptedUploadable)
+
+    def __init__(self, remote_reader, storage_index):
+        self.rr = remote_reader
+        self.storage_index = storage_index
+
+    def get_size(self):
+        return self.rr.callRemote("get_size")
+    def get_storage_index(self):
+        return defer.succeed(self.storage_index)
+    def set_segment_size(self, segment_size):
+        return self.rr.callRemote("set_segment_size", segment_size)
+    def set_serialized_encoding_parameters(self, params):
+        pass # ??
+    def read_encrypted(self, length):
+        return self.rr.callRemote("read_encrypted", length)
+    def get_plaintext_hashtree_leaves(self, first, last, num_segments):
+        return self.rr.callRemote("get_plaintext_hashtree_leaves",
+                                  first, last, num_segments)
+    def get_plaintext_hash(self):
+        return self.rr.callRemote("get_plaintext_hash")
+    def close(self):
+        # ??
+        return self.rr.callRemote("close")
+
 
 class Helper(Referenceable, service.MultiService):
-    implements(RIHelper)
+    implements(interfaces.RIHelper)
     # this is the non-distributed version. When we need to have multiple
     # helpers, this object will query the farm to see if anyone has the
     # storage_index of interest, and send the request off to them.
@@ -111,7 +98,7 @@ class Helper(Referenceable, service.MultiService):
         if storage_index in self._active_uploads:
             uh = self._active_uploads[storage_index]
         else:
-            uh = CHKUploadHelper(storage_index, self)
+            uh = self.chk_upload_helper_class(storage_index, self)
             self._active_uploads[storage_index] = uh
         return uh.start()
 

src/allmydata/test/test_helper.py

@@ -6,9 +6,11 @@ from foolscap import Tub, eventual
 from foolscap.logging import log
 
 from allmydata import upload, offloaded
+from allmydata.util import hashutil
 
 class FakeCHKUploadHelper(offloaded.CHKUploadHelper):
-    pass
+    def remote_upload(self, reader):
+        return {'uri_extension_hash': hashutil.uri_extension_hash("")}
 
 class FakeHelper(offloaded.Helper):
     chk_upload_helper_class = FakeCHKUploadHelper

src/allmydata/upload.py

@@ -14,8 +14,8 @@ from allmydata.util.hashutil import file_renewal_secret_hash, \
 from allmydata import encode, storage, hashtree, uri
 from allmydata.util import idlib, mathutil
 from allmydata.util.assertutil import precondition
-from allmydata.interfaces import IUploadable, IUploader, IEncryptedUploadable
-from allmydata.offloaded import RIEncryptedUploadable
+from allmydata.interfaces import IUploadable, IUploader, \
+     IEncryptedUploadable, RIEncryptedUploadable
 from pycryptopp.cipher.aes import AES
 
 from cStringIO import StringIO
@@ -429,10 +429,10 @@ class CHKUploader:
     def set_params(self, encoding_parameters):
         self._encoding_parameters = encoding_parameters
 
-    def log(self, msg, parent=None):
+    def log(self, msg, parent=None, **kwargs):
         if parent is None:
             parent = self._log_number
-        return self._client.log(msg, parent=parent)
+        return self._client.log(msg, parent=parent, **kwargs)
 
     def start(self, uploadable):
         """Start uploading the file.