Add proper per-file copyright notices/licenses and top-level license.

[bluesky.git] / cleaner / azure.py

diff --git a/cleaner/azure.py b/cleaner/azure.py
index 9f0ac51..57c4d05 100644 (file)
--- a/cleaner/azure.py
+++ b/cleaner/azure.py
@@ -1,3 +1,32 @@
+# Blue Sky: File Systems in the Cloud
+#
+# Copyright (C) 2011  The Regents of the University of California
+# Written by Michael Vrable <mvrable@cs.ucsd.edu>
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in the
+#    documentation and/or other materials provided with the distribution.
+# 3. Neither the name of the University nor the names of its contributors
+#    may be used to endorse or promote products derived from this software
+#    without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+# ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+# SUCH DAMAGE.
+
 """A simple Python library for accessing the Windows Azure blob service."""
 
 import base64, hashlib, hmac, httplib, os, time, urllib
@@ -148,16 +177,39 @@ class AzureConnection:
         path = "/%s/%s" % (container, key)
         r = self._make_request(path, method='DELETE')
 
+def parallel_delete(container, keys):
+    import Queue
+    from threading import Lock, Thread
+
+    keys = list(iter(keys))
+
+    q = Queue.Queue(16384)
+    l = Lock()
+
+    def deletion_task():
+        conn = AzureConnection()
+        while True:
+            k = q.get()
+            l.acquire()
+            print k
+            l.release()
+            conn.delete(container, k)
+            q.task_done()
+
+    for i in range(128):
+        t = Thread(target=deletion_task)
+        t.setDaemon(True)
+        t.start()
+
+    for k in keys:
+        q.put(k)
+    q.join()
+
 if __name__ == '__main__':
     container = 'bluesky'
     conn = AzureConnection()
 
-    print "Container contents:"
-    for k in conn.list(container):
-        print k
-
     conn.put(container, "testkey", "A" * 40)
     print "Fetch result:", conn.get(container, "testkey")
 
-    for k in list(iter(conn.list(container))):
-        conn.delete(container, k)
+    parallel_delete(container, conn.list(container))