From: Brian Warner <warner@allmydata.com>
Date: Tue, 17 Apr 2007 02:29:57 +0000 (-0700)
Subject: encode: make MAX_SEGMENT_SIZE controllable, to support tests which force the use... 
X-Git-Tag: tahoe_v0.1.0-0-UNSTABLE~88
X-Git-Url: https://git.rkrishnan.org/components/com_hotproperty/flags/reliability?a=commitdiff_plain;h=ff8cb4d32e38d3de77d54f4d3130e997211baffc;p=tahoe-lafs%2Ftahoe-lafs.git

encode: make MAX_SEGMENT_SIZE controllable, to support tests which force the use of multiple segments. Also, remove not-very-useful upload-side debug messages
---

diff --git a/src/allmydata/encode.py b/src/allmydata/encode.py
index 50c3c389..cc3c4f39 100644
--- a/src/allmydata/encode.py
+++ b/src/allmydata/encode.py
@@ -79,6 +79,12 @@ class Encoder(object):
     implements(IEncoder)
     NEEDED_SHARES = 25
     TOTAL_SHARES = 100
+    MAX_SEGMENT_SIZE = 2*MiB
+
+    def __init__(self, options={}):
+        object.__init__(self)
+        self.MAX_SEGMENT_SIZE = options.get("max_segment_size",
+                                            self.MAX_SEGMENT_SIZE)
 
     def setup(self, infile):
         self.infile = infile
@@ -89,7 +95,7 @@ class Encoder(object):
         self.num_shares = self.TOTAL_SHARES
         self.required_shares = self.NEEDED_SHARES
 
-        self.segment_size = min(2*MiB, self.file_size)
+        self.segment_size = min(self.MAX_SEGMENT_SIZE, self.file_size)
         # this must be a multiple of self.required_shares
         self.segment_size = mathutil.next_multiple(self.segment_size,
                                                    self.required_shares)
diff --git a/src/allmydata/test/test_encode.py b/src/allmydata/test/test_encode.py
index 08200e36..59419cf5 100644
--- a/src/allmydata/test/test_encode.py
+++ b/src/allmydata/test/test_encode.py
@@ -147,12 +147,12 @@ class Roundtrip(unittest.TestCase):
                          bucket_modes={}):
         if AVAILABLE_SHARES is None:
             AVAILABLE_SHARES = NUM_SHARES
-        e = encode.Encoder()
+        options = {"max_segment_size": 25} # force use of multiple segments
+        e = encode.Encoder(options)
         data = "happy happy joy joy" * 4
         e.setup(StringIO(data))
 
         assert e.num_shares == NUM_SHARES # else we'll be completely confused
-        e.segment_size = 25 # force use of multiple segments
         e.setup_codec() # need to rebuild the codec for that change
 
         assert (NUM_SEGMENTS-1)*e.segment_size < len(data) <= NUM_SEGMENTS*e.segment_size
diff --git a/src/allmydata/upload.py b/src/allmydata/upload.py
index fac636ac..8a65fc43 100644
--- a/src/allmydata/upload.py
+++ b/src/allmydata/upload.py
@@ -56,10 +56,10 @@ class PeerTracker:
         return (alreadygot, set(buckets.keys()))
 
 class FileUploader:
-    debug = False
 
-    def __init__(self, client):
+    def __init__(self, client, options={}):
         self._client = client
+        self._options = options
 
     def set_params(self, needed_shares, shares_of_happiness, total_shares):
         self.needed_shares = needed_shares
@@ -87,12 +87,10 @@ class FileUploader:
         string)."""
 
         log.msg("starting upload [%s]" % (idlib.b2a(self._verifierid),))
-        if self.debug:
-            print "starting upload"
         assert self.needed_shares
 
         # create the encoder, so we can know how large the shares will be
-        self._encoder = encode.Encoder()
+        self._encoder = encode.Encoder(self._options)
         self._encoder.setup(self._filehandle)
         share_size = self._encoder.get_share_size()
         block_size = self._encoder.get_block_size()
@@ -279,7 +277,6 @@ class Uploader(service.MultiService):
     implements(IUploader)
     name = "uploader"
     uploader_class = FileUploader
-    debug = False
 
     needed_shares = 25 # Number of shares required to reconstruct a file.
     desired_shares = 75 # We will abort an upload unless we can allocate space for at least this many.
@@ -294,18 +291,14 @@ class Uploader(service.MultiService):
         # note: this is only of the plaintext data, no encryption yet
         return hasher.digest()
 
-    def upload(self, f):
+    def upload(self, f, options={}):
         # this returns the URI
         assert self.parent
         assert self.running
         f = IUploadable(f)
         fh = f.get_filehandle()
-        u = self.uploader_class(self.parent)
-        if self.debug:
-            u.debug = True
+        u = self.uploader_class(self.parent, options)
         u.set_filehandle(fh)
-        # push two shares, require that we get two back. TODO: this is
-        # temporary, of course.
         u.set_params(self.needed_shares, self.desired_shares, self.total_shares)
         u.set_verifierid(self._compute_verifierid(fh))
         d = u.start()