From: Brian Warner <warner@lothar.com>
Date: Tue, 12 Jun 2012 01:16:02 +0000 (-0700)
Subject: offloaded.py: don't drop the Deferred
X-Git-Url: https://git.rkrishnan.org/pf/content/en/service/nxhtml.html?a=commitdiff_plain;h=a809e4cababc385bf2807c973c7b66214326a7ae;p=tahoe-lafs%2Ftahoe-lafs.git

offloaded.py: don't drop the Deferred

There was one corner case (where the client disconnects at just the
wrong time) that could have dropped a Deferred, leading to an Unhandled
Error. Clean up the control flow to avoid this case.
---

diff --git a/src/allmydata/immutable/offloaded.py b/src/allmydata/immutable/offloaded.py
index 20a4fd7c..5365bad4 100644
--- a/src/allmydata/immutable/offloaded.py
+++ b/src/allmydata/immutable/offloaded.py
@@ -325,14 +325,12 @@ class CHKCiphertextFetcher(AskUntilSuccessMixin):
             # else.
             have = os.stat(self._encoding_file)[stat.ST_SIZE]
             d = self.call("read_encrypted", have-1, 1)
-            d.addCallback(self._done2, started)
-            return
-
-        # first, find out how large the file is going to be
-        d = self.call("get_size")
-        d.addCallback(self._got_size)
-        d.addCallback(self._start_reading)
-        d.addCallback(self._done)
+        else:
+            # first, find out how large the file is going to be
+            d = self.call("get_size")
+            d.addCallback(self._got_size)
+            d.addCallback(self._start_reading)
+            d.addCallback(self._done)
         d.addCallback(self._done2, started)
         d.addErrback(self._failed)