moved generic util functions from mistral to mistral-lib
Change-Id: I780c270e4b1a184d7d4dcc580d23697ba75edab1 Closes-bug: #1815183
This commit is contained in:
ali
ali
parent
f6a2ec1f7e
commit
070080bd1b
@ -5,6 +5,7 @@ coverage==4.0
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debtcollector==1.2.0
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docutils==0.11
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dulwich==0.15.0
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eventlet==0.20.0
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extras==1.0.0
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fixtures==3.0.0
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flake8==2.5.5
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@ -25,6 +26,7 @@ netifaces==0.10.4
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openstackdocstheme==1.18.1
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os-client-config==1.28.0
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oslo.i18n==3.15.3
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oslo.log==3.36.0
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oslo.serialization==2.18.0
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oslo.utils==3.33.0
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oslotest==3.2.0
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@ -14,48 +14,176 @@
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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import copy
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from mistral_lib.tests import base as tests_base
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from mistral_lib import utils
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import testtools.matchers as ttm
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LEFT = {
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'key1': {
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'key11': "val11"
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},
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'key2': 'val2'
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}
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RIGHT = {
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'key1': {
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'key11': "val111111",
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'key12': "val12",
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'key13': {
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'key131': 'val131'
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}
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},
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'key2': 'val2222',
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'key3': 'val3'
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}
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class TestUtils(tests_base.TestCase):
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def test_merge_dicts(self):
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left = copy.deepcopy(LEFT)
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right = copy.deepcopy(RIGHT)
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expected = {
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'key1': {
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'key11': "val111111",
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'key12': "val12",
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'key13': {
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'key131': 'val131'
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}
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},
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'key2': 'val2222',
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'key3': 'val3'
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}
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utils.merge_dicts(left, right)
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self.assertDictEqual(left, expected)
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def test_merge_dicts_overwrite_false(self):
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left = copy.deepcopy(LEFT)
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right = copy.deepcopy(RIGHT)
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expected = {
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'key1': {
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'key11': "val11",
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'key12': "val12",
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'key13': {
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'key131': 'val131'
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}
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},
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'key2': 'val2',
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'key3': 'val3'
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}
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utils.merge_dicts(left, right, overwrite=False)
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self.assertDictEqual(left, expected)
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def test_itersubclasses(self):
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class A(object):
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pass
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class B(A):
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pass
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class C(A):
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pass
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class D(C):
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pass
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self.assertEqual([B, C, D], list(utils.iter_subclasses(A)))
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def test_get_dict_from_entries(self):
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input = ['param1', {'param2': 2}]
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input_dict = utils.get_dict_from_entries(input)
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self.assertIn('param1', input_dict)
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self.assertIn('param2', input_dict)
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self.assertEqual(2, input_dict.get('param2'))
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self.assertIs(input_dict.get('param1'), utils.NotDefined)
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def test_get_input_dict_from_string(self):
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self.assertDictEqual(
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{
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'param1': utils.NotDefined,
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'param2': 2,
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'param3': 'var3'
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},
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utils.get_dict_from_string('param1, param2=2, param3="var3"')
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)
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self.assertDictEqual({}, utils.get_dict_from_string(''))
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def test_cut_string(self):
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s = 'Hello, Mistral!'
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self.assertEqual('Hello...', utils.cut_string(s, length=5))
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self.assertEqual(s, utils.cut_string(s, length=100))
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self.assertEqual(s, utils.cut_string(s, length=-1))
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def test_cut_list(self):
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l = ['Hello, Mistral!', 'Hello, OpenStack!']
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list_ = ['Hello, Mistral!', 'Hello, OpenStack!']
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self.assertEqual("['Hello, M...", utils.cut_list(l, 11))
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self.assertEqual("['Hello, Mistr...", utils.cut_list(l, 15))
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self.assertEqual("['Hello, Mistral!', 'He...", utils.cut_list(l, 24))
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self.assertEqual("['Hello, M...", utils.cut_list(list_, 13))
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self.assertEqual("['Hello, Mistr...", utils.cut_list(list_, 17))
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self.assertEqual(
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"['Hello, Mistral!', 'He...",
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utils.cut_list(list_, 26))
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self.assertEqual(
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"['Hello, Mistral!', 'Hello, OpenStack!']",
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utils.cut_list(l, 100)
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utils.cut_list(list_, 100)
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)
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self.assertEqual("[1, 2...", utils.cut_list([1, 2, 3, 4, 5], 4))
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self.assertEqual("[1, 2...", utils.cut_list([1, 2, 3, 4, 5], 5))
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self.assertEqual("[1, 2, 3...", utils.cut_list([1, 2, 3, 4, 5], 6))
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self.assertEqual(
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"['Hello, Mistral!', 'Hello, OpenStack!']",
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utils.cut_list(list_, -1)
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)
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self.assertEqual("[1, 2...", utils.cut_list([1, 2, 3, 4, 5], 8))
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self.assertEqual("[1, 2,...", utils.cut_list([1, 2, 3, 4, 5], 9))
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self.assertEqual("[1, 2, 3...", utils.cut_list([1, 2, 3, 4, 5], 11))
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self.assertRaises(ValueError, utils.cut_list, (1, 2))
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def test_cut_list_with_large_dict_of_str(self):
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d = [str(i) for i in range(65535)]
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s = utils.cut(d, 65535)
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self.assertThat(len(s), ttm.Not(ttm.GreaterThan(65535)))
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def test_cut_list_with_large_dict_of_int(self):
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d = [i for i in range(65535)]
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s = utils.cut(d, 65535)
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self.assertThat(len(s), ttm.Not(ttm.GreaterThan(65535)))
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def test_cut_list_with_large_dict_of_dict(self):
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d = [{'value': str(i)} for i in range(65535)]
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s = utils.cut(d, 65535)
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self.assertThat(len(s), ttm.Not(ttm.GreaterThan(65535)))
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def test_cut_list_for_state_info(self):
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d = [{'value': 'This is a string that exceeds 35 characters'}
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for i in range(2000)]
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s = utils.cut(d, 65500)
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self.assertThat(len(s), ttm.Not(ttm.GreaterThan(65500)))
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def test_cut_dict_with_strings(self):
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d = {'key1': 'value1', 'key2': 'value2'}
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s = utils.cut_dict(d, 9)
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s = utils.cut_dict(d, 13)
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self.assertIn(s, ["{'key1': '...", "{'key2': '..."])
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s = utils.cut_dict(d, 13)
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s = utils.cut_dict(d, 15)
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self.assertIn(s, ["{'key1': 'va...", "{'key2': 'va..."])
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s = utils.cut_dict(d, 19)
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s = utils.cut_dict(d, 22)
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self.assertIn(
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s,
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@ -70,17 +198,55 @@ class TestUtils(tests_base.TestCase):
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]
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)
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self.assertIn(
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utils.cut_dict(d, -1),
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[
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"{'key1': 'value1', 'key2': 'value2'}",
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"{'key2': 'value2', 'key1': 'value1'}"
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]
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)
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self.assertRaises(ValueError, utils.cut_dict, (1, 2))
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def test_cut_dict_with_digits(self):
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d = {1: 2, 3: 4}
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s = utils.cut_dict(d, 6)
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s = utils.cut_dict(d, 10)
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self.assertIn(s, ["{1: 2, ...", "{3: 4, ..."])
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s = utils.cut_dict(d, 8)
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s = utils.cut_dict(d, 11)
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self.assertIn(s, ["{1: 2, 3...", "{3: 4, 1..."])
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s = utils.cut_dict(d, 100)
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self.assertIn(s, ["{1: 2, 3: 4}", "{3: 4, 1: 2}"])
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def test_cut_dict_with_large_dict_of_str(self):
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d = {}
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for i in range(65535):
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d[str(i)] = str(i)
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s = utils.cut(d, 65535)
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self.assertThat(len(s), ttm.Not(ttm.GreaterThan(65535)))
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def test_cut_dict_with_large_dict_of_int(self):
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d = {}
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for i in range(65535):
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d[i] = i
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s = utils.cut(d, 65535)
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self.assertThat(len(s), ttm.Not(ttm.GreaterThan(65535)))
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def test_cut_dict_with_large_dict_of_dict(self):
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d = {}
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for i in range(65535):
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d[i] = {'value': str(i)}
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s = utils.cut(d, 65535)
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self.assertThat(len(s), ttm.Not(ttm.GreaterThan(65535)))
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def test_cut_dict_for_state_info(self):
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d = {}
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for i in range(2000):
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d[i] = {'value': 'This is a string that exceeds 35 characters'}
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s = utils.cut(d, 65500)
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self.assertThat(len(s), ttm.Not(ttm.GreaterThan(65500)))
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@ -10,18 +10,196 @@
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import datetime
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import functools
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import json
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import os
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from os import path
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import socket
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import string
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import sys
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import threading
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import eventlet
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from eventlet import corolocal
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from oslo_log import log as logging
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from oslo_utils import timeutils
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from oslo_utils import uuidutils
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import pkg_resources as pkg
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import random
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# Thread local storage.
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_th_loc_storage = threading.local()
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# TODO(rakhmerov): these two constants are misplaced. Utility methods
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# should not be Mistral specific. They should be generic enough so to
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# be moved to any other project w/o changes.
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ACTION_TASK_TYPE = 'ACTION'
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WORKFLOW_TASK_TYPE = 'WORKFLOW'
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def generate_unicode_uuid():
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return uuidutils.generate_uuid()
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def is_valid_uuid(uuid_string):
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return uuidutils.is_uuid_like(uuid_string)
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def _get_greenlet_local_storage():
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greenlet_id = corolocal.get_ident()
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greenlet_locals = getattr(_th_loc_storage, "greenlet_locals", None)
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if not greenlet_locals:
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greenlet_locals = {}
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_th_loc_storage.greenlet_locals = greenlet_locals
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if greenlet_id in greenlet_locals:
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return greenlet_locals[greenlet_id]
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else:
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return None
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def has_thread_local(var_name):
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gl_storage = _get_greenlet_local_storage()
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return gl_storage and var_name in gl_storage
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def get_thread_local(var_name):
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if not has_thread_local(var_name):
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return None
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return _get_greenlet_local_storage()[var_name]
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def set_thread_local(var_name, val):
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if val is None and has_thread_local(var_name):
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gl_storage = _get_greenlet_local_storage()
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# Delete variable from greenlet local storage.
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if gl_storage:
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del gl_storage[var_name]
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# Delete the entire greenlet local storage from thread local storage.
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if gl_storage and len(gl_storage) == 0:
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del _th_loc_storage.greenlet_locals[corolocal.get_ident()]
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if val is not None:
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gl_storage = _get_greenlet_local_storage()
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if not gl_storage:
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gl_storage = _th_loc_storage.greenlet_locals[
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corolocal.get_ident()] = {}
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gl_storage[var_name] = val
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def log_exec(logger, level=logging.DEBUG):
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"""Decorator for logging function execution.
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By default, target function execution is logged with DEBUG level.
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"""
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def _decorator(func):
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@functools.wraps(func)
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def _logged(*args, **kw):
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params_repr = ("[args=%s, kw=%s]" % (str(args), str(kw))
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if args or kw else "")
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func_repr = ("Called method [name=%s, doc='%s', params=%s]" %
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(func.__name__, func.__doc__, params_repr))
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logger.log(level, func_repr)
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return func(*args, **kw)
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_logged.__doc__ = func.__doc__
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return _logged
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return _decorator
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def merge_dicts(left, right, overwrite=True):
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"""Merges two dictionaries.
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Values of right dictionary recursively get merged into left dictionary.
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:param left: Left dictionary.
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:param right: Right dictionary.
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:param overwrite: If False, left value will not be overwritten if exists.
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"""
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if left is None:
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return right
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if right is None:
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return left
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for k, v in right.items():
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if k not in left:
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left[k] = v
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else:
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left_v = left[k]
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if isinstance(left_v, dict) and isinstance(v, dict):
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merge_dicts(left_v, v, overwrite=overwrite)
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elif overwrite:
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left[k] = v
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return left
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def update_dict(left, right):
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"""Updates left dict with content from right dict
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:param left: Left dict.
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:param right: Right dict.
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:return: the updated left dictionary.
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"""
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if left is None:
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return right
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if right is None:
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return left
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left.update(right)
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return left
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def get_file_list(directory):
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base_path = pkg.resource_filename("mistral", directory)
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return [path.join(base_path, f) for f in os.listdir(base_path)
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if path.isfile(path.join(base_path, f))]
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def cut_dict(d, length=100):
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"""Truncates string representation of a dictionary for a given length.
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"""Removes dictionary entries according to the given length.
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:param d: dictionary to truncate
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:param length: amount of characters to truncate to
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:return: string containing given length of characters from the dictionary
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This method removes a number of entries, if needed, so that a
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string representation would fit into the given length.
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The intention of this method is to optimize truncation of string
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representation for dictionaries where the exact precision is not
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critically important. Otherwise, we'd always have to convert a dict
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into a string first and then shrink it to a needed size which will
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increase memory footprint and reduce performance in case of large
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dictionaries (i.e. tens of thousands entries).
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Note that the method, due to complexity of the algorithm, has some
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non-zero precision which depends on exact keys and values placed into
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the dict. So for some dicts their reduced string representations will
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be only approximately equal to the given value (up to around several
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chars difference).
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:param d: A dictionary.
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:param length: A length limiting the dictionary string representation.
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:return: A dictionary which is a subset of the given dictionary.
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"""
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if not isinstance(d, dict):
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raise ValueError("A dictionary is expected, got: %s" % type(d))
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@ -35,44 +213,42 @@ def cut_dict(d, length=100):
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v = str(value)
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# Processing key.
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new_len = len(res) + len(k)
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new_len = len(k)
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is_str = isinstance(key, str)
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if is_str:
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new_len += 2
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if new_len >= length:
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res += "'%s..." % k[:length - new_len] if is_str else "%s..." % k
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new_len += 2 # Account for the quotation marks
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if 0 <= length <= new_len + len(res):
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res += "'%s" % k if is_str else k
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break
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else:
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res += "'%s'" % k if is_str else k
|
||||
|
||||
res += ": "
|
||||
|
||||
# Processing value.
|
||||
new_len = len(res) + len(v)
|
||||
new_len = len(v)
|
||||
|
||||
is_str = isinstance(value, str)
|
||||
|
||||
if is_str:
|
||||
new_len += 2
|
||||
|
||||
if new_len >= length:
|
||||
res += "'%s..." % v[:length - new_len] if is_str else "%s..." % v
|
||||
|
||||
if 0 <= length <= new_len + len(res):
|
||||
res += "'%s" % v if is_str else v
|
||||
break
|
||||
else:
|
||||
res += "'%s'" % v if is_str else v
|
||||
|
||||
res += ', ' if idx < len(d) - 1 else '}'
|
||||
|
||||
if len(res) >= length:
|
||||
res += '...'
|
||||
|
||||
break
|
||||
|
||||
idx += 1
|
||||
|
||||
if 0 <= length <= len(res) and res[length - 1] is not '}':
|
||||
res = res[:length - 3] + '...'
|
||||
|
||||
return res
|
||||
|
||||
|
||||
@ -98,14 +274,16 @@ def cut_list(l, length=100):
|
||||
if is_str:
|
||||
new_len += 2
|
||||
|
||||
if new_len >= length:
|
||||
res += "'%s..." % s[:length - new_len] if is_str else "%s..." % s
|
||||
|
||||
if 0 <= length <= new_len:
|
||||
res += "'%s" % s if is_str else s
|
||||
break
|
||||
else:
|
||||
res += "'%s'" % s if is_str else s
|
||||
res += ', ' if idx < len(l) - 1 else ']'
|
||||
|
||||
if 0 <= length <= len(res) and res[length - 1] is not ']':
|
||||
res = res[:length - 3] + '...'
|
||||
|
||||
return res
|
||||
|
||||
|
||||
@ -116,7 +294,7 @@ def cut_string(s, length=100):
|
||||
:param length: amount of characters to truncate to
|
||||
:return: string containing given length of characters
|
||||
"""
|
||||
if len(s) > length:
|
||||
if 0 <= length < len(s):
|
||||
return "%s..." % s[:length]
|
||||
|
||||
return s
|
||||
@ -139,3 +317,170 @@ def cut(data, length=100):
|
||||
return cut_dict(data, length=length)
|
||||
|
||||
return cut_string(str(data), length=length)
|
||||
|
||||
|
||||
def cut_by_kb(data, kilobytes):
|
||||
length = get_number_of_chars_from_kilobytes(kilobytes)
|
||||
return cut(data, length)
|
||||
|
||||
|
||||
def cut_by_char(data, length):
|
||||
return cut(data, length)
|
||||
|
||||
|
||||
def iter_subclasses(cls, _seen=None):
|
||||
"""Generator over all subclasses of a given class in depth first order."""
|
||||
|
||||
if not isinstance(cls, type):
|
||||
raise TypeError('iter_subclasses must be called with new-style class'
|
||||
', not %.100r' % cls)
|
||||
_seen = _seen or set()
|
||||
|
||||
try:
|
||||
subs = cls.__subclasses__()
|
||||
except TypeError: # fails only when cls is type
|
||||
subs = cls.__subclasses__(cls)
|
||||
|
||||
for sub in subs:
|
||||
if sub not in _seen:
|
||||
_seen.add(sub)
|
||||
yield sub
|
||||
for _sub in iter_subclasses(sub, _seen):
|
||||
yield _sub
|
||||
|
||||
|
||||
def random_sleep(limit=1):
|
||||
"""Sleeps for a random period of time not exceeding the given limit.
|
||||
|
||||
Mostly intended to be used by tests to emulate race conditions.
|
||||
|
||||
:param limit: Float number of seconds that a sleep period must not exceed.
|
||||
"""
|
||||
|
||||
seconds = random.Random().randint(0, limit * 1000) * 0.001
|
||||
|
||||
print("Sleep: %s sec..." % seconds)
|
||||
|
||||
eventlet.sleep(seconds)
|
||||
|
||||
|
||||
class NotDefined(object):
|
||||
"""Marker of an empty value.
|
||||
|
||||
In a number of cases None can't be used to express the semantics of
|
||||
a not defined value because None is just a normal value rather than
|
||||
a value set to denote that it's not defined. This class can be used
|
||||
in such cases instead of None.
|
||||
"""
|
||||
|
||||
pass
|
||||
|
||||
|
||||
def get_number_of_chars_from_kilobytes(kilobytes):
|
||||
bytes_per_char = sys.getsizeof('s') - sys.getsizeof('')
|
||||
total_number_of_chars = int(kilobytes * 1024 / bytes_per_char)
|
||||
return total_number_of_chars
|
||||
|
||||
|
||||
def get_dict_from_string(string, delimiter=','):
|
||||
if not string:
|
||||
return {}
|
||||
|
||||
kv_dicts = []
|
||||
|
||||
for kv_pair_str in string.split(delimiter):
|
||||
kv_str = kv_pair_str.strip()
|
||||
kv_list = kv_str.split('=')
|
||||
|
||||
if len(kv_list) > 1:
|
||||
try:
|
||||
value = json.loads(kv_list[1])
|
||||
except ValueError:
|
||||
value = kv_list[1]
|
||||
|
||||
kv_dicts += [{kv_list[0]: value}]
|
||||
else:
|
||||
kv_dicts += [kv_list[0]]
|
||||
|
||||
return get_dict_from_entries(kv_dicts)
|
||||
|
||||
|
||||
def get_dict_from_entries(entries):
|
||||
"""Transforms a list of entries into dictionary.
|
||||
|
||||
:param entries: A list of entries.
|
||||
If an entry is a dictionary the method simply updates the result
|
||||
dictionary with its content.
|
||||
If an entry is not a dict adds {entry, NotDefined} into the result.
|
||||
"""
|
||||
|
||||
result = {}
|
||||
|
||||
for e in entries:
|
||||
if isinstance(e, dict):
|
||||
result.update(e)
|
||||
else:
|
||||
# NOTE(kong): we put NotDefined here as the value of
|
||||
# param without value specified, to distinguish from
|
||||
# the valid values such as None, ''(empty string), etc.
|
||||
result[e] = NotDefined
|
||||
|
||||
return result
|
||||
|
||||
|
||||
def get_process_identifier():
|
||||
"""Gets current running process identifier."""
|
||||
|
||||
return "%s_%s" % (socket.gethostname(), os.getpid())
|
||||
|
||||
|
||||
def utc_now_sec():
|
||||
"""Returns current time and drops microseconds."""
|
||||
|
||||
return drop_microseconds(timeutils.utcnow())
|
||||
|
||||
|
||||
def drop_microseconds(date):
|
||||
"""Drops microseconds and returns date."""
|
||||
return date.replace(microsecond=0)
|
||||
|
||||
|
||||
def datetime_to_str(val, sep=' '):
|
||||
"""Converts datetime value to string.
|
||||
|
||||
If the given value is not an instance of datetime then the method
|
||||
returns the same value.
|
||||
|
||||
:param val: datetime value.
|
||||
:param sep: Separator between date and time.
|
||||
:return: Datetime as a string.
|
||||
"""
|
||||
if isinstance(val, datetime.datetime):
|
||||
return val.isoformat(sep)
|
||||
|
||||
return val
|
||||
|
||||
|
||||
def datetime_to_str_in_dict(d, key, sep=' '):
|
||||
"""Converts datetime value in te given dict to string.
|
||||
|
||||
:param d: A dictionary.
|
||||
:param key: The key for which we need to convert the value.
|
||||
:param sep: Separator between date and time.
|
||||
"""
|
||||
val = d.get(key)
|
||||
|
||||
if val is not None:
|
||||
d[key] = datetime_to_str(d[key], sep=sep)
|
||||
|
||||
|
||||
def generate_string(length):
|
||||
"""Returns random string.
|
||||
|
||||
:param length: the length of returned string
|
||||
"""
|
||||
|
||||
return ''.join(random.choice(
|
||||
string.ascii_uppercase + string.digits)
|
||||
for _ in range(length)
|
||||
)
|
||||
|
||||
@ -2,5 +2,7 @@
|
||||
# of appearance. Changing the order has an impact on the overall integration
|
||||
# process, which may cause wedges in the gate later.
|
||||
|
||||
eventlet!=0.20.1,>=0.20.0 # MIT
|
||||
oslo.log>=3.36.0 # Apache-2.0
|
||||
pbr!=2.1.0,>=2.0.0 # Apache-2.0
|
||||
oslo.serialization!=2.19.1,>=2.18.0 # Apache-2.0
|
||||
|
||||
@ -9,6 +9,6 @@ sphinx!=1.6.6,!=1.6.7,>=1.6.2;python_version>='3.4' # BSD
|
||||
openstackdocstheme>=1.18.1 # Apache-2.0
|
||||
oslotest>=3.2.0 # Apache-2.0
|
||||
stestr>=2.0.0 # Apache-2.0
|
||||
|
||||
testtools>=2.2.0 # MIT
|
||||
# releasenotes
|
||||
reno>=2.5.0 # Apache-2.0
|
||||
|
||||
Loading…
Reference in New Issue
Block a user