Scripts to download files from google storage based on sha1 sums

third_party/gsutil/gslib/test_wildcard_iterator.py

Index: third_party/gsutil/gslib/test_wildcard_iterator.py
diff --git a/third_party/gsutil/gslib/test_wildcard_iterator.py b/third_party/gsutil/gslib/test_wildcard_iterator.py
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+++ b/third_party/gsutil/gslib/test_wildcard_iterator.py
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+#!/usr/bin/env python
+#
+# Copyright 2010 Google Inc.
+#
+# Permission is hereby granted, free of charge, to any person obtaining a
+# copy of this software and associated documentation files (the
+# "Software"), to deal in the Software without restriction, including
+# without limitation the rights to use, copy, modify, merge, publish, dis-
+# tribute, sublicense, and/or sell copies of the Software, and to permit
+# persons to whom the Software is furnished to do so, subject to the fol-
+# lowing conditions:
+#
+# The above copyright notice and this permission notice shall be included
+# in all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+# OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABIL-
+# ITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
+# SHALL THE AUTHOR BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+# WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+# IN THE SOFTWARE.
+
+"""Unit tests for gslib wildcard_iterator"""
+
+import os
+import shutil
+import sys
+import tempfile
+import time
+import unittest
+
+# Put local libs at front of path so tests will run latest lib code rather
+# than whatever code is found on user's PYTHONPATH.
+sys.path.insert(0, '.')
+sys.path.insert(0, 'boto')
+from boto import InvalidUriError
+from gslib import test_util
+from gslib import wildcard_iterator
+from gslib.project_id import ProjectIdHandler
+from tests.integration.s3 import mock_storage_service
+from wildcard_iterator import ContainsWildcard
+
+
+class CloudWildcardIteratorTests(unittest.TestCase):
+  """CloudWildcardIterator test suite"""
+
+  def GetSuiteDescription(self):
+    return 'CloudWildcardIterator test suite'
+
+  @classmethod
+  def SetUpClass(cls):
+    """Creates 2 mock buckets, each containing 4 objects, including 1 nested."""
+    cls.immed_child_obj_names = ['abcd', 'abdd', 'ade$']
+    cls.all_obj_names = ['abcd', 'abdd', 'ade$', 'nested1/nested2/xyz1',
+                         'nested1/nested2/xyz2', 'nested1/nfile_abc']
+    cls.base_uri_str = 'gs://gslib_test_%d' % int(time.time())
+    cls.test_bucket0_uri, cls.test_bucket0_obj_uri_strs = (
+        cls.__SetUpOneMockBucket(0)
+    )
+    cls.test_bucket1_uri, cls.test_bucket1_obj_uri_strs = (
+        cls.__SetUpOneMockBucket(1)
+    )
+    cls.created_test_data = True
+
+  @classmethod
+  def __SetUpOneMockBucket(cls, bucket_num):
+    """Creates a mock bucket containing 4 objects, including 1 nested.
+    Args:
+      bucket_num: Number for building bucket name.
+
+    Returns:
+      tuple: (bucket name, set of object URI strings).
+    """
+    bucket_uri = test_util.test_storage_uri(
+        '%s_%s' % (cls.base_uri_str, bucket_num))
+    bucket_uri.create_bucket()
+    obj_uri_strs = set()
+    for obj_name in cls.all_obj_names:
+      obj_uri = test_util.test_storage_uri('%s%s' % (bucket_uri, obj_name))
+      key = obj_uri.new_key()
+      key.set_contents_from_string('')
+      obj_uri_strs.add(str(obj_uri))
+    return (bucket_uri, obj_uri_strs)
+
+  @classmethod
+  def TearDownClass(cls):
+    """Cleans up bucket and objects created by SetUpClass"""
+    if hasattr(cls, 'created_test_data'):
+      for test_obj_uri_str in cls.test_bucket0_obj_uri_strs:
+        test_util.test_storage_uri(test_obj_uri_str).delete_key()
+      for test_obj_uri_str in cls.test_bucket1_obj_uri_strs:
+        test_util.test_storage_uri(test_obj_uri_str).delete_key()
+      cls.test_bucket0_uri.delete_bucket()
+      cls.test_bucket1_uri.delete_bucket()
+
+  def TestNoOpObjectIterator(self):
+    """Tests that bucket-only URI iterates just that one URI"""
+    results = list(
+        test_util.test_wildcard_iterator(self.test_bucket0_uri).IterUris())
+    self.assertEqual(1, len(results))
+    self.assertEqual(str(self.test_bucket0_uri), str(results[0]))
+
+  def TestMatchingAllObjects(self):
+    """Tests matching all objects, based on wildcard"""
+    actual_obj_uri_strs = set(
+        str(u) for u in test_util.test_wildcard_iterator(
+            self.test_bucket0_uri.clone_replace_name('**')).IterUris())
+    self.assertEqual(self.test_bucket0_obj_uri_strs, actual_obj_uri_strs)
+
+  def TestMatchingObjectSubset(self):
+    """Tests matching a subset of objects, based on wildcard"""
+    exp_obj_uri_strs = set(
+        [str(self.test_bucket0_uri.clone_replace_name('abcd')),
+         str(self.test_bucket0_uri.clone_replace_name('abdd'))])
+    actual_obj_uri_strs = set(
+        str(u) for u in test_util.test_wildcard_iterator(
+            self.test_bucket0_uri.clone_replace_name('ab??')).IterUris())
+    self.assertEqual(exp_obj_uri_strs, actual_obj_uri_strs)
+
+  def TestMatchingNonWildcardedUri(self):
+    """Tests matching a single named object"""
+    exp_obj_uri_strs = set([str(self.test_bucket0_uri.clone_replace_name('abcd')
+                               )])
+    actual_obj_uri_strs = set(
+        str(u) for u in test_util.test_wildcard_iterator(
+            self.test_bucket0_uri.clone_replace_name('abcd')).IterUris())
+    self.assertEqual(exp_obj_uri_strs, actual_obj_uri_strs)
+
+  def TestWildcardedObjectUriWithVsWithoutPrefix(self):
+    """Tests that wildcarding w/ and w/o server prefix get same result"""
+    # (It's just more efficient to query w/o a prefix; wildcard
+    # iterator will filter the matches either way.)
+    with_prefix_uri_strs = set(
+        str(u) for u in test_util.test_wildcard_iterator(
+            self.test_bucket0_uri.clone_replace_name('abcd')).IterUris())
+    # By including a wildcard at the start of the string no prefix can be
+    # used in server request.
+    no_prefix_uri_strs = set(
+        str(u) for u in test_util.test_wildcard_iterator(
+            self.test_bucket0_uri.clone_replace_name('?bcd')).IterUris())
+    self.assertEqual(with_prefix_uri_strs, no_prefix_uri_strs)
+
+  def TestWildcardedObjectUriNestedSubdirMatch(self):
+    """Tests wildcarding with a nested subdir"""
+    uri_strs = set()
+    prefixes = set()
+    for blr in test_util.test_wildcard_iterator(
+        self.test_bucket0_uri.clone_replace_name('*')):
+      if blr.HasPrefix():
+        prefixes.add(blr.GetPrefix().name)
+      else:
+        uri_strs.add(blr.GetUri().uri)
+    exp_obj_uri_strs = set(['%s_0/%s' % (self.base_uri_str, x)
+        for x in self.immed_child_obj_names])
+    self.assertEqual(exp_obj_uri_strs, uri_strs)
+    self.assertEqual(1, len(prefixes))
+    self.assertTrue('nested1/' in prefixes)
+
+  def TestWildcardedObjectUriNestedSubSubdirMatch(self):
+    """Tests wildcarding with a nested sub-subdir"""
+    for final_char in ('', '/'):
+      uri_strs = set()
+      prefixes = set()
+      for blr in test_util.test_wildcard_iterator(
+          self.test_bucket0_uri.clone_replace_name('nested1/*%s' % final_char)):
+        if blr.HasPrefix():
+          prefixes.add(blr.GetPrefix().name)
+        else:
+          uri_strs.add(blr.GetUri().uri)
+      self.assertEqual(1, len(uri_strs))
+      self.assertEqual(1, len(prefixes))
+      self.assertTrue('nested1/nested2/' in prefixes)
+
+  def TestWildcardPlusSubdirMatch(self):
+    """Tests gs://bucket/*/subdir matching"""
+    actual_uri_strs = set()
+    actual_prefixes = set()
+    for blr in test_util.test_wildcard_iterator(
+        self.test_bucket0_uri.clone_replace_name('*/nested1')):
+      if blr.HasPrefix():
+        actual_prefixes.add(blr.GetPrefix().name)
+      else:
+        actual_uri_strs.add(blr.GetUri().uri)
+    expected_uri_strs = set()
+    expected_prefixes = set(['nested1/'])
+    self.assertEqual(expected_prefixes, actual_prefixes)
+    self.assertEqual(expected_uri_strs, actual_uri_strs)
+
+  def TestWildcardPlusSubdirSubdirMatch(self):
+    """Tests gs://bucket/*/subdir/* matching"""
+    actual_uri_strs = set()
+    actual_prefixes = set()
+    for blr in test_util.test_wildcard_iterator(
+        self.test_bucket0_uri.clone_replace_name('*/nested2/*')):
+      if blr.HasPrefix():
+        actual_prefixes.add(blr.GetPrefix().name)
+      else:
+        actual_uri_strs.add(blr.GetUri().uri)
+    expected_uri_strs = set([
+      self.test_bucket0_uri.clone_replace_name('nested1/nested2/xyz1').uri,
+      self.test_bucket0_uri.clone_replace_name('nested1/nested2/xyz2').uri])
+    expected_prefixes = set()
+    self.assertEqual(expected_prefixes, actual_prefixes)
+    self.assertEqual(expected_uri_strs, actual_uri_strs)
+
+  def TestNoMatchingWildcardedObjectUri(self):
+    """Tests that get back an empty iterator for non-matching wildcarded URI"""
+    res = list(test_util.test_wildcard_iterator(
+        self.test_bucket0_uri.clone_replace_name('*x0')).IterUris())
+    self.assertEqual(0, len(res))
+
+  def TestWildcardedInvalidObjectUri(self):
+    """Tests that we raise an exception for wildcarded invalid URI"""
+    try:
+      for unused_ in test_util.test_wildcard_iterator(
+          'badscheme://asdf').IterUris():
+        self.assertFalse('Expected InvalidUriError not raised.')
+    except InvalidUriError, e:
+      # Expected behavior.
+      self.assertTrue(e.message.find('Unrecognized scheme') != -1)
+
+  def TestSingleMatchWildcardedBucketUri(self):
+    """Tests matching a single bucket based on a wildcarded bucket URI"""
+    exp_obj_uri_strs = set(['%s_1/' % self.base_uri_str])
+    actual_obj_uri_strs = set(
+        str(u) for u in test_util.test_wildcard_iterator(
+            '%s*1' % self.base_uri_str).IterUris())
+    self.assertEqual(exp_obj_uri_strs, actual_obj_uri_strs)
+
+  def TestMultiMatchWildcardedBucketUri(self):
+    """Tests matching a multiple buckets based on a wildcarded bucket URI"""
+    exp_obj_uri_strs = set(['%s_%s/' %
+                            (self.base_uri_str, i) for i in range(2)])
+    actual_obj_uri_strs = set(
+        str(u) for u in test_util.test_wildcard_iterator(
+            '%s*' % self.base_uri_str).IterUris())
+    self.assertEqual(exp_obj_uri_strs, actual_obj_uri_strs)
+
+  def TestWildcardBucketAndObjectUri(self):
+    """Tests matching with both bucket and object wildcards"""
+    exp_obj_uri_strs = set([str(self.test_bucket0_uri.clone_replace_name(
+        'abcd'))])
+    actual_obj_uri_strs = set(
+        str(u) for u in test_util.test_wildcard_iterator(
+            '%s_0*/abc*' % self.base_uri_str).IterUris())
+    self.assertEqual(exp_obj_uri_strs, actual_obj_uri_strs)
+
+  def TestWildcardUpToFinalCharSubdirPlusObjectName(self):
+    """Tests wildcard subd*r/obj name"""
+    exp_obj_uri_strs = set([str(self.test_bucket0_uri.clone_replace_name(
+        'nested1/nested2/xyz1'))])
+    actual_obj_uri_strs = set(
+        str(u) for u in test_util.test_wildcard_iterator(
+            '%snested1/nest*2/xyz1' % self.test_bucket0_uri.uri).IterUris())
+    self.assertEqual(exp_obj_uri_strs, actual_obj_uri_strs)
+
+  def TestPostRecursiveWildcard(self):
+    """Tests that wildcard containing ** followed by an additional wildcard works"""
+    exp_obj_uri_strs = set([str(self.test_bucket0_uri.clone_replace_name(
+        'nested1/nested2/xyz2'))])
+    actual_obj_uri_strs = set(
+        str(u) for u in test_util.test_wildcard_iterator(
+            '%s**/*y*2' % self.test_bucket0_uri.uri).IterUris())
+    self.assertEqual(exp_obj_uri_strs, actual_obj_uri_strs)
+
+  def TestCallingGetKeyOnProviderOnlyWildcardIteration(self):
+    """Tests that attempting iterating provider-only wildcard raises"""
+    try:
+      from gslib.bucket_listing_ref import BucketListingRefException
+      for iter_result in wildcard_iterator.wildcard_iterator(
+          'gs://', ProjectIdHandler(),
+          bucket_storage_uri_class=mock_storage_service.MockBucketStorageUri):
+        iter_result.GetKey()
+        self.fail('Expected BucketListingRefException not raised.')
+    except BucketListingRefException, e:
+      self.assertTrue(str(e).find(
+          'Attempt to call GetKey() on Key-less BucketListingRef') != -1)
+
+
+class FileIteratorTests(unittest.TestCase):
+  """FileWildcardIterator test suite"""
+
+  def GetSuiteDescription(self):
+    return 'FileWildcardIterator test suite'
+
+  @classmethod
+  def SetUpClass(cls):
+    """
+    Creates a test dir containing 3 files and one nested subdirectory + file.
+    """
+
+    # Create the test directories.
+    cls.test_dir = tempfile.mkdtemp()
+    nested_subdir = '%s%sdir1%sdir2' % (cls.test_dir, os.sep, os.sep)
+    os.makedirs(nested_subdir)
+
+    # Create the test files.
+    immed_child_filenames = ['abcd', 'abdd', 'ade$', 'dir1']
+    immed_child_filepaths = ['%s%s%s' % (cls.test_dir, os.sep, f)
+                             for f in immed_child_filenames]
+    filenames = ['abcd', 'abdd', 'ade$', 'dir1%sdir2%szzz' % (os.sep, os.sep)]
+    filepaths = ['%s%s%s' % (cls.test_dir, os.sep, f) for f in filenames]
+    for filepath in filepaths:
+      open(filepath, 'w')
+
+    # Set up global test variables.
+    cls.immed_child_uri_strs = set(
+        os.path.join('file://%s' % f) for f in immed_child_filepaths
+    )
+
+    cls.all_file_uri_strs = set(
+        [('file://%s' % o) for o in filepaths]
+    )
+
+    cls.all_uri_strs = set(
+        ['file://%s' % nested_subdir]
+    ).union(cls.all_file_uri_strs)
+
+  @classmethod
+  def TearDownClass(cls):
+    """Cleans up test dir and file created by SetUpClass"""
+    if hasattr(cls, 'test_dir'):
+      shutil.rmtree(cls.test_dir)
+
+  def TestContainsWildcard(self):
+    """Tests ContainsWildcard call"""
+    self.assertTrue(ContainsWildcard('a*.txt'))
+    self.assertTrue(ContainsWildcard('a[0-9].txt'))
+    self.assertFalse(ContainsWildcard('0-9.txt'))
+    self.assertTrue(ContainsWildcard('?.txt'))
+
+  def TestNoOpDirectoryIterator(self):
+    """Tests that directory-only URI iterates just that one URI"""
+    results = list(test_util.test_wildcard_iterator('file:///tmp/').IterUris())
+    self.assertEqual(1, len(results))
+    self.assertEqual('file:///tmp/', str(results[0]))
+
+  def TestMatchingAllFiles(self):
+    """Tests matching all files, based on wildcard"""
+    uri = test_util.test_storage_uri('file://%s/*' % self.test_dir)
+    actual_uri_strs = set(str(u) for u in
+                          test_util.test_wildcard_iterator(uri).IterUris()
+                         )
+    self.assertEqual(self.immed_child_uri_strs, actual_uri_strs)
+
+  def TestMatchingFileSubset(self):
+    """Tests matching a subset of files, based on wildcard"""
+    exp_uri_strs = set(
+        ['file://%s/abcd' % self.test_dir, 'file://%s/abdd' % self.test_dir]
+    )
+    uri = test_util.test_storage_uri('file://%s/ab??' % self.test_dir)
+    actual_uri_strs = set(str(u) for u in
+                          test_util.test_wildcard_iterator(uri).IterUris()
+                         )
+    self.assertEqual(exp_uri_strs, actual_uri_strs)
+
+  def TestMatchingNonWildcardedUri(self):
+    """Tests matching a single named file"""
+    exp_uri_strs = set(['file://%s/abcd' % self.test_dir])
+    uri = test_util.test_storage_uri('file://%s/abcd' % self.test_dir)
+    actual_uri_strs = set(
+        str(u) for u in test_util.test_wildcard_iterator(uri).IterUris())
+    self.assertEqual(exp_uri_strs, actual_uri_strs)
+
+  def TestMatchingFilesIgnoringOtherRegexChars(self):
+    """Tests ignoring non-wildcard regex chars (e.g., ^ and $)"""
+
+    exp_uri_strs = set(['file://%s/ade$' % self.test_dir])
+    uri = test_util.test_storage_uri('file://%s/ad*$' % self.test_dir)
+    actual_uri_strs = set(
+        str(u) for u in test_util.test_wildcard_iterator(uri).IterUris())
+    self.assertEqual(exp_uri_strs, actual_uri_strs)
+
+  def TestRecursiveDirectoryOnlyWildcarding(self):
+    """Tests recusive expansion of directory-only '**' wildcard"""
+    uri = test_util.test_storage_uri('file://%s/**' % self.test_dir)
+    actual_uri_strs = set(
+        str(u) for u in test_util.test_wildcard_iterator(uri).IterUris())
+    self.assertEqual(self.all_file_uri_strs, actual_uri_strs)
+
+  def TestRecursiveDirectoryPlusFileWildcarding(self):
+    """Tests recusive expansion of '**' directory plus '*' wildcard"""
+    uri = test_util.test_storage_uri('file://%s/**/*' % self.test_dir)
+    actual_uri_strs = set(
+        str(u) for u in test_util.test_wildcard_iterator(uri).IterUris())
+    self.assertEqual(self.all_file_uri_strs, actual_uri_strs)
+
+  def TestInvalidRecursiveDirectoryWildcard(self):
+    """Tests that wildcard containing '***' raises exception"""
+    try:
+      uri = test_util.test_storage_uri('file://%s/***/abcd' % self.test_dir)
+      for unused_ in test_util.test_wildcard_iterator(uri).IterUris():
+        self.fail('Expected WildcardException not raised.')
+    except wildcard_iterator.WildcardException, e:
+      # Expected behavior.
+      self.assertTrue(str(e).find('more than 2 consecutive') != -1)
+
+  def TestMissingDir(self):
+    """Tests that wildcard gets empty iterator when directory doesn't exist"""
+    res = list(
+        test_util.test_wildcard_iterator('file://no_such_dir/*').IterUris())
+    self.assertEqual(0, len(res))
+
+  def TestExistingDirNoFileMatch(self):
+    """Tests that wildcard returns empty iterator when there's no match"""
+    uri = test_util.test_storage_uri(
+        'file://%s/non_existent*' % self.test_dir)
+    res = list(test_util.test_wildcard_iterator(uri).IterUris())
+    self.assertEqual(0, len(res))
+
+
+if __name__ == '__main__':
+  if sys.version_info[:3] < (2, 5, 1):
+    sys.exit('These tests must be run on at least Python 2.5.1\n')
+  test_loader = unittest.TestLoader()
+  test_loader.testMethodPrefix = 'Test'
+  for suite in (test_loader.loadTestsFromTestCase(CloudWildcardIteratorTests),
+                test_loader.loadTestsFromTestCase(FileIteratorTests)):
+    # Seems like there should be a cleaner way to find the test_class.
+    test_class = suite.__getattribute__('_tests')[0]
+    # We call SetUpClass() and TearDownClass() ourselves because we
+    # don't assume the user has Python 2.7 (which supports classmethods
+    # that do it, with camelCase versions of these names).
+    try:
+      print 'Setting up %s...' % test_class.GetSuiteDescription()
+      test_class.SetUpClass()
+      print 'Running %s...' % test_class.GetSuiteDescription()
+      unittest.TextTestRunner(verbosity=2).run(suite)
+    finally:
+      print 'Cleaning up after %s...' % test_class.GetSuiteDescription()
+      test_class.TearDownClass()
+      print ''