Remove unused returned value object_path from yield_hashes()

Some public functions in the diskfile manager expect or return full
file paths. It implies a filesystem diskfile implementation.
To make it easier to plug alternate diskfile implementations, patch
functions to take more generic arguments.

This commit changes DiskFileManager yield_hashes() returned values
from:
        - object_path, object_hash, timestamps
to:
        - object_hash, timestamps

object_path was not used by any caller.

Change-Id: I914fb1ec8ce7c9c26d22e1d07f03bd03f4504176

swift/obj/diskfile.py

@@ -1351,7 +1351,7 @@ class BaseDiskFileManager(object):
     def yield_hashes(self, device, partition, policy,
                      suffixes=None, **kwargs):
         """
-        Yields tuples of (full_path, hash_only, timestamps) for object
+        Yields tuples of (hash_only, timestamps) for object
         information stored for the given device, partition, and
         (optionally) suffixes. If suffixes is None, all stored
         suffixes will be searched for object hashes. Note that if
@@ -1407,7 +1407,7 @@ class BaseDiskFileManager(object):
                         # file cannot be opened and therefore cannot
                         # be ssync'd
                         continue
-                    yield (object_path, object_hash, timestamps)
+                    yield (object_hash, timestamps)
                 except AssertionError as err:
                     self.logger.debug('Invalid file set in %s (%s)' % (
                         object_path, err))

swift/obj/ssync_sender.py

@@ -271,10 +271,10 @@ class Sender(object):
             frag_index=self.job.get('frag_index'))
         if self.remote_check_objs is not None:
             hash_gen = six.moves.filter(
-                lambda path_objhash_timestamps:
+                lambda objhash_timestamps:
-                path_objhash_timestamps[1] in
+                objhash_timestamps[0] in
                 self.remote_check_objs, hash_gen)
-        for path, object_hash, timestamps in hash_gen:
+        for object_hash, timestamps in hash_gen:
             self.available_map[object_hash] = timestamps
             with exceptions.MessageTimeout(
                     self.daemon.node_timeout,

test/unit/obj/test_diskfile.py

@@ -1183,7 +1183,7 @@ class DiskFileManagerMixin(BaseDiskFileTestMixin):
                         return files
             self.fail('Unexpected listdir of %r' % path)
         expected_items = [
-            (os.path.join(part_path, hash_[-3:], hash_), hash_, timestamps)
+            (hash_, timestamps)
             for hash_, timestamps in expected.items()]
         with mock.patch('os.listdir', _listdir), \
                 mock.patch('os.unlink'):

test/unit/obj/test_reconstructor.py

@@ -909,7 +909,7 @@ class TestGlobalSetupObjectReconstructor(unittest.TestCase):
                     self.job['policy'], self.suffixes,
                     frag_index=self.job.get('frag_index'))
                 self.available_map = {}
-                for path, hash_, timestamps in hash_gen:
+                for hash_, timestamps in hash_gen:
                     self.available_map[hash_] = timestamps
                 context['available_map'] = self.available_map
                 ssync_calls.append(context)

test/unit/obj/test_ssync_sender.py

@@ -433,8 +433,6 @@ class TestSender(BaseTest):
             if device == 'dev' and partition == '9' and suffixes == ['abc'] \
                     and policy == POLICIES.legacy:
                 yield (
-                    '/srv/node/dev/objects/9/abc/'
-                    '9d41d8cd98f00b204e9800998ecf0abc',
                     '9d41d8cd98f00b204e9800998ecf0abc',
                     {'ts_data': Timestamp(1380144470.00000),
                      'ts_meta': Timestamp(1380155570.00005)})
@@ -483,8 +481,6 @@ class TestSender(BaseTest):
             if device == 'dev' and partition == '9' and suffixes == ['abc'] \
                     and policy == POLICIES.legacy:
                 yield (
-                    '/srv/node/dev/objects/9/abc/'
-                    '9d41d8cd98f00b204e9800998ecf0abc',
                     '9d41d8cd98f00b204e9800998ecf0abc',
                     {'ts_data': Timestamp(1380144470.00000)})
             else:
@@ -521,8 +517,6 @@ class TestSender(BaseTest):
             if device == 'dev' and partition == '9' and suffixes == ['abc'] \
                     and policy == POLICIES.legacy:
                 yield (
-                    '/srv/node/dev/objects/9/abc/'
-                    '9d41d8cd98f00b204e9800998ecf0abc',
                     '9d41d8cd98f00b204e9800998ecf0abc',
                     {'ts_data': Timestamp(1380144470.00000)})
             else:
@@ -557,8 +551,6 @@ class TestSender(BaseTest):
             if device == 'dev' and partition == '9' and suffixes == ['abc'] \
                     and policy == POLICIES.legacy:
                 yield (
-                    '/srv/node/dev/objects/9/abc/'
-                    '9d41d8cd98f00b204e9800998ecf0abc',
                     '9d41d8cd98f00b204e9800998ecf0abc',
                     {'ts_data': Timestamp(1380144470.00000)})
             else:
@@ -758,19 +750,13 @@ class TestSender(BaseTest):
                     policy == POLICIES.legacy and
                     suffixes == ['abc', 'def']):
                 yield (
-                    '/srv/node/dev/objects/9/abc/'
-                    '9d41d8cd98f00b204e9800998ecf0abc',
                     '9d41d8cd98f00b204e9800998ecf0abc',
                     {'ts_data': Timestamp(1380144470.00000)})
                 yield (
-                    '/srv/node/dev/objects/9/def/'
-                    '9d41d8cd98f00b204e9800998ecf0def',
                     '9d41d8cd98f00b204e9800998ecf0def',
                     {'ts_data': Timestamp(1380144472.22222),
                      'ts_meta': Timestamp(1380144473.22222)})
                 yield (
-                    '/srv/node/dev/objects/9/def/'
-                    '9d41d8cd98f00b204e9800998ecf1def',
                     '9d41d8cd98f00b204e9800998ecf1def',
                     {'ts_data': Timestamp(1380144474.44444),
                      'ts_ctype': Timestamp(1380144474.44448),
@@ -820,8 +806,6 @@ class TestSender(BaseTest):
                     policy == POLICIES.legacy and
                     suffixes == ['abc']):
                 yield (
-                    '/srv/node/dev/objects/9/abc/'
-                    '9d41d8cd98f00b204e9800998ecf0abc',
                     '9d41d8cd98f00b204e9800998ecf0abc',
                     {'ts_data': Timestamp(1380144470.00000)})
             else:
@@ -859,8 +843,6 @@ class TestSender(BaseTest):
                     policy == POLICIES.legacy and
                     suffixes == ['abc']):
                 yield (
-                    '/srv/node/dev/objects/9/abc/'
-                    '9d41d8cd98f00b204e9800998ecf0abc',
                     '9d41d8cd98f00b204e9800998ecf0abc',
                     {'ts_data': Timestamp(1380144470.00000)})
             else:
@@ -899,8 +881,6 @@ class TestSender(BaseTest):
                     policy == POLICIES.legacy and
                     suffixes == ['abc']):
                 yield (
-                    '/srv/node/dev/objects/9/abc/'
-                    '9d41d8cd98f00b204e9800998ecf0abc',
                     '9d41d8cd98f00b204e9800998ecf0abc',
                     {'ts_data': Timestamp(1380144470.00000)})
             else:
@@ -938,8 +918,6 @@ class TestSender(BaseTest):
                     policy == POLICIES.legacy and
                     suffixes == ['abc']):
                 yield (
-                    '/srv/node/dev/objects/9/abc/'
-                    '9d41d8cd98f00b204e9800998ecf0abc',
                     '9d41d8cd98f00b204e9800998ecf0abc',
                     {'ts_data': Timestamp(1380144470.00000)})
             else:
@@ -980,8 +958,6 @@ class TestSender(BaseTest):
                     policy == POLICIES.legacy and
                     suffixes == ['abc']):
                 yield (
-                    '/srv/node/dev/objects/9/abc/'
-                    '9d41d8cd98f00b204e9800998ecf0abc',
                     '9d41d8cd98f00b204e9800998ecf0abc',
                     {'ts_data': Timestamp(1380144470.00000)})
             else: