py3: fix up some NameErrors

reduce, cmp, basestring, unicode, long -- none of those exist under py3.

Change-Id: I860abbae3fa4e8353a090df1470aa706d5906e2f

swift/common/middleware/crypto/crypto_utils.py

@@ -78,7 +78,7 @@ class Crypto(object):
             # The CTR mode offset is incremented for every AES block and taken
             # modulo 2^128.
             offset_blocks, offset_in_block = divmod(offset, self.iv_length)
-            ivl = long(binascii.hexlify(iv), 16) + offset_blocks
+            ivl = int(binascii.hexlify(iv), 16) + offset_blocks
             ivl %= 1 << algorithms.AES.block_size
             iv = str(bytearray.fromhex(format(
                 ivl, '0%dx' % (2 * self.iv_length))))

swift/common/middleware/s3api/controllers/obj.py

@@ -37,7 +37,7 @@ class ObjectController(Controller):
         conditions which are described in the following document.
         - http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.35
         """
-        length = long(resp.headers.get('Content-Length'))
+        length = int(resp.headers.get('Content-Length'))
 
         try:
             content_range = Range(req_range)

swift/common/middleware/s3api/etree.py

@@ -17,6 +17,7 @@ import lxml.etree
 from urllib import quote
 from copy import deepcopy
 from pkg_resources import resource_stream  # pylint: disable-msg=E0611
+import six
 import sys
 
 from swift.common.utils import get_logger
@@ -42,7 +43,7 @@ def cleanup_namespaces(elem):
             tag = tag[len('{%s}' % ns):]
         return tag
 
-    if not isinstance(elem.tag, basestring):
+    if not isinstance(elem.tag, six.string_types):
         # elem is a comment element.
         return
 
@@ -104,7 +105,7 @@ def tostring(tree, encoding_type=None, use_s3ns=True):
             # encoding_type=url.
             blacklist = ['LastModified', 'ID', 'DisplayName', 'Initiated']
             if e.tag not in blacklist:
-                if isinstance(e.text, basestring):
+                if isinstance(e.text, six.string_types):
                     e.text = quote(e.text)
 
     return lxml.etree.tostring(tree, xml_declaration=True, encoding='UTF-8')

swift/common/middleware/s3api/utils.py

@@ -55,13 +55,13 @@ def unique_id():
 
 
 def utf8encode(s):
-    if isinstance(s, unicode):
+    if s is None or isinstance(s, bytes):
-        s = s.encode('utf8')
+        return s
-    return s
+    return s.encode('utf8')
 
 
 def utf8decode(s):
-    if isinstance(s, str):
+    if isinstance(s, bytes):
         s = s.decode('utf8')
     return s
 

swift/container/reconciler.py

@@ -54,6 +54,14 @@ def cmp_policy_info(info, remote_info):
         return (info['delete_timestamp'] > info['put_timestamp'] and
                 info.get('count', info.get('object_count', 0)) == 0)
 
+    def cmp(a, b):
+        if a < b:
+            return -1
+        elif b < a:
+            return 1
+        else:
+            return 0
+
     deleted = is_deleted(info)
     remote_deleted = is_deleted(remote_info)
     if any([deleted, remote_deleted]):

swift/obj/reconstructor.py

@@ -1016,9 +1016,10 @@ class ObjectReconstructor(Daemon):
     def get_local_devices(self):
         """Returns a set of all local devices in all EC policies."""
         policy2devices = self.get_policy2devices()
-        return reduce(set.union, (
+        local_devices = set()
-            set(d['device'] for d in devices)
+        for devices in policy2devices.values():
-            for devices in policy2devices.values()), set())
+            local_devices.update(d['device'] for d in devices)
+        return local_devices
 
     def collect_parts(self, override_devices=None, override_partitions=None):
         """