DM-41750: Fix some problems with global state in tests

.github/workflows/build.yaml

@@ -13,7 +13,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ["3.10", "3.11"]
+        python-version: ["3.11", "3.12"]
 
     steps:
       - uses: actions/checkout@v3
@@ -110,7 +110,7 @@ jobs:
       - name: Set up Python
         uses: actions/setup-python@v4
         with:
-          python-version: "3.10"
+          python-version: "3.11"
 
       - name: Install dependencies
         run: |

pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "lsst-daf-butler"
-requires-python = ">=3.10.0"
+requires-python = ">=3.11.0"
 description = "An abstraction layer for reading and writing astronomical data to datastores."
 license = {text = "BSD 3-Clause License"}
 readme = "README.md"
@@ -16,7 +16,7 @@ classifiers = [
     "License :: OSI Approved :: BSD License",
     "Operating System :: OS Independent",
     "Programming Language :: Python :: 3",
-    "Programming Language :: Python :: 3.10",
+    "Programming Language :: Python :: 3.12",
     "Programming Language :: Python :: 3.11",
     "Topic :: Scientific/Engineering :: Astronomy",
 ]

python/lsst/daf/butler/_storage_class.py

@@ -724,11 +724,11 @@
         # components or parents before their classes are defined
         # we have a helper function that we can call recursively
         # to extract definitions from the configuration.
-        def processStorageClass(name: str, sconfig: StorageClassConfig, msg: str = "") -> None:
+        def processStorageClass(name: str, _sconfig: StorageClassConfig, msg: str = "") -> None:
             # Maybe we've already processed this through recursion
-            if name not in sconfig:
+            if name not in _sconfig:
                 return
-            info = sconfig.pop(name)
+            info = _sconfig.pop(name)
 
             # Always create the storage class so we can ensure that
             # we are not trying to overwrite with a different definition
@@ -757,9 +757,31 @@
             baseClass = None
             if "inheritsFrom" in info:
                 baseName = info["inheritsFrom"]
-                if baseName not in self:
+
+                # The inheritsFrom feature requires that the storage class
+                # being inherited from is itself a subclass of StorageClass
+                # that was created with makeNewStorageClass. If it was made
+                # and registered with a simple StorageClass constructor it
+                # cannot be used here and we try to recreate it.
+                if baseName in self:
+                    baseClass = type(self.getStorageClass(baseName))
+                    if baseClass is StorageClass:
+                        log.warning(
+                            "Storage class %s is requested to inherit from %s but that storage class "
+                            "has not been defined to be a subclass of StorageClass and so can not "
+                            "be used. Attempting to recreate parent class from current configuration.",
+                            name,
+                            baseName,
+                        )
+                        processStorageClass(baseName, sconfig, msg)
+                else:
                     processStorageClass(baseName, sconfig, msg)
                 baseClass = type(self.getStorageClass(baseName))
+                if baseClass is StorageClass:
+                    raise TypeError(
+                        f"Configuration for storage class {name} requests to inherit from "
+                        f" storage class {baseName} but that class is not defined correctly."
+                    )
 
             newStorageClassType = self.makeNewStorageClass(name, baseClass, **storageClassKwargs)
             newStorageClass = newStorageClassType()
@@ -942,6 +964,9 @@
                     f"New definition for StorageClass {storageClass.name} ({storageClass!r}) "
                     f"differs from current definition ({existing!r}){errmsg}"
                 )
+            if type(existing) is StorageClass and type(storageClass) is not StorageClass:
+                # Replace generic with specialist subclass equivalent.
+                self._storageClasses[storageClass.name] = storageClass
         else:
             self._storageClasses[storageClass.name] = storageClass
 

python/lsst/daf/butler/cli/cliLog.py

@@ -56,7 +56,7 @@ class PrecisionLogFormatter(logging.Formatter):
 
     def formatTime(self, record: logging.LogRecord, datefmt: str | None = None) -> str:
         """Format the time as an aware datetime."""
-        ct: datetime.datetime = self.converter(record.created, tz=datetime.timezone.utc)  # type: ignore
+        ct: datetime.datetime = self.converter(record.created, tz=datetime.UTC)  # type: ignore
         if self.use_local:
             ct = ct.astimezone()
         if datefmt:

python/lsst/daf/butler/datastore/cache_manager.py

@@ -167,7 +167,7 @@ def from_file(cls, file: ResourcePath, root: ResourcePath) -> CacheEntry:
             size=stat.st_size,
             ref=id_,
             component=component,
-            ctime=datetime.datetime.utcfromtimestamp(stat.st_ctime),
+            ctime=datetime.datetime.fromtimestamp(stat.st_ctime, datetime.UTC),
         )
 
 
@@ -239,7 +239,7 @@ def items(self) -> ItemsView[str, CacheEntry]:
         name="marker",
         size=0,
         ref=uuid.UUID("{00000000-0000-0000-0000-000000000000}"),
-        ctime=datetime.datetime.utcfromtimestamp(0),
+        ctime=datetime.datetime.fromtimestamp(0, datetime.UTC),
     )
 
     def pop(self, key: str, default: CacheEntry | None = __marker) -> CacheEntry | None:
@@ -967,7 +967,7 @@ def _expire_cache(self) -> None:
             return
 
         if self._expiration_mode == "age":
-            now = datetime.datetime.utcnow()
+            now = datetime.datetime.now(datetime.UTC)
             for key in self._sort_cache():
                 delta = now - self._cache_entries[key].ctime
                 if delta.seconds > self._expiration_threshold:

python/lsst/daf/butler/datastore/file_templates.py

@@ -201,7 +201,7 @@ def validateTemplates(
                     log.critical("Template failure with key '%s': %s", matchKey, e)
 
         if logFailures and unmatchedKeys:
-            log.warning("Unchecked keys: %s", ", ".join([str(k) for k in unmatchedKeys]))
+            log.warning("Unchecked keys: '%s'", ", ".join([str(k) for k in unmatchedKeys]))
 
         if failed:
             if len(failed) == 1:

python/lsst/daf/butler/datastores/chainedDatastore.py

@@ -461,7 +461,7 @@ def put_new(self, inMemoryDataset: Any, ref: DatasetRef) -> Mapping[str, Dataset
         npermanent = 0
         nephemeral = 0
         stored_refs: dict[str, DatasetRef] = {}
-        for datastore, constraints in zip(self.datastores, self.datastoreConstraints):
+        for datastore, constraints in zip(self.datastores, self.datastoreConstraints, strict=True):
             if (
                 constraints is not None and not constraints.isAcceptable(ref)
             ) or not datastore.constraints.isAcceptable(ref):

python/lsst/daf/butler/logging.py

@@ -111,6 +111,11 @@ def MDCRemove(cls, key: str) -> None:
         """
         cls._MDC.pop(key, None)
 
+    @classmethod
+    def clear_mdc(cls) -> None:
+        """Clear all MDC entries."""
+        cls._MDC.clear()
+
     @classmethod
     @contextmanager
     def set_mdc(cls, mdc: dict[str, str]) -> Generator[None, None, None]:
@@ -231,7 +236,7 @@ def from_record(cls, record: LogRecord) -> "ButlerLogRecord":
         # Always use UTC because in distributed systems we can't be sure
         # what timezone localtime is and it's easier to compare logs if
         # every system is using the same time.
-        record_dict["asctime"] = datetime.datetime.fromtimestamp(record.created, tz=datetime.timezone.utc)
+        record_dict["asctime"] = datetime.datetime.fromtimestamp(record.created, tz=datetime.UTC)
 
         # Sometimes exception information is included so must be
         # extracted.

python/lsst/daf/butler/registry/datasets/byDimensions/_storage.py

@@ -32,8 +32,8 @@
 
 __all__ = ("ByDimensionsDatasetRecordStorage",)
 
+import datetime
 from collections.abc import Callable, Iterable, Iterator, Sequence, Set
-from datetime import datetime
 from typing import TYPE_CHECKING
 
 import astropy.time
@@ -586,13 +586,13 @@ def insert(
         # Current timestamp, type depends on schema version. Use microsecond
         # precision for astropy time to keep things consistent with
         # TIMESTAMP(6) SQL type.
-        timestamp: datetime | astropy.time.Time
+        timestamp: datetime.datetime | astropy.time.Time
         if self._use_astropy:
-            # Astropy `now()` precision should be the same as `utcnow()` which
+            # Astropy `now()` precision should be the same as `now()` which
             # should mean microsecond.
             timestamp = astropy.time.Time.now()
         else:
-            timestamp = datetime.utcnow()
+            timestamp = datetime.datetime.now(datetime.UTC)
 
         # Iterate over data IDs, transforming a possibly-single-pass iterable
         # into a list.
@@ -647,11 +647,11 @@ def import_(
 
         # Current timestamp, type depends on schema version.
         if self._use_astropy:
-            # Astropy `now()` precision should be the same as `utcnow()` which
+            # Astropy `now()` precision should be the same as `now()` which
             # should mean microsecond.
             timestamp = sqlalchemy.sql.literal(astropy.time.Time.now(), type_=ddl.AstropyTimeNsecTai)
         else:
-            timestamp = sqlalchemy.sql.literal(datetime.utcnow())
+            timestamp = sqlalchemy.sql.literal(datetime.datetime.now(datetime.UTC))
 
         # Iterate over data IDs, transforming a possibly-single-pass iterable
         # into a list.

python/lsst/daf/butler/registry/queries/expressions/parser/parserYacc.py

@@ -78,7 +78,7 @@
     (?P<value>
         (?P<number>-?(\d+(\.\d*)|(\.\d+)))   # floating point number
         |
-        (?P<iso>\d+-\d+-\d+([ T]\d+:\d+(:\d+([.]\d*)?)?)?)   # iso(t)
+        (?P<iso>\d+-\d+-\d+([ T]\d+:\d+(:\d+([.]\d*)?)?)?)   # iso(t) [no timezone]
         |
         (?P<fits>[+]\d+-\d+-\d+(T\d+:\d+:\d+([.]\d*)?)?)   # fits
         |
@@ -108,6 +108,11 @@ def _parseTimeString(time_str):
     ValueError
         Raised if input string has unexpected format
     """
+    # Check for time zone. Python datetime objects can be timezone-aware
+    # and if one has been stringified then there will be a +00:00 on the end.
+    # Special case UTC. Fail for other timezones.
+    time_str = time_str.replace("+00:00", "")
+
     match = _re_time_str.match(time_str)
     if not match:
         raise ValueError(f'Time string "{time_str}" does not match known formats')

python/lsst/daf/butler/registry/tests/_registry.py

@@ -30,6 +30,7 @@
 
 __all__ = ["RegistryTests"]
 
+import datetime
 import itertools
 import logging
 import os
@@ -39,7 +40,7 @@
 from abc import ABC, abstractmethod
 from collections import defaultdict, namedtuple
 from collections.abc import Iterator
-from datetime import datetime, timedelta
+from datetime import timedelta
 from typing import TYPE_CHECKING
 
 import astropy.time
@@ -2481,9 +2482,9 @@ def testSkipCalibs(self):
     def testIngestTimeQuery(self):
         registry = self.makeRegistry()
         self.loadData(registry, "base.yaml")
-        dt0 = datetime.utcnow()
+        dt0 = datetime.datetime.now(datetime.UTC)
         self.loadData(registry, "datasets.yaml")
-        dt1 = datetime.utcnow()
+        dt1 = datetime.datetime.now(datetime.UTC)
 
         datasets = list(registry.queryDatasets(..., collections=...))
         len0 = len(datasets)

python/lsst/daf/butler/tests/_examplePythonTypes.py

@@ -77,6 +77,9 @@ def registerMetricsExample(butler: Butler) -> None:
         can be retrieved as dataset components.
     ``StructuredDataNoComponents``
         A monolithic write of a `MetricsExample`.
+
+    These definitions must match the equivalent definitions in the test YAML
+    files.
     """
     yamlDict = _addFullStorageClass(
         butler,
@@ -101,6 +104,7 @@ def registerMetricsExample(butler: Butler) -> None:
         pytype=MetricsExample,
         parameters={"slice"},
         delegate="lsst.daf.butler.tests.MetricsDelegate",
+        converters={"dict": "lsst.daf.butler.tests.MetricsExample.makeFromDict"},
     )
 
     _addFullStorageClass(
@@ -117,9 +121,7 @@ def registerMetricsExample(butler: Butler) -> None:
     )
 
 
-def _addFullStorageClass(
-    butler: Butler, name: str, formatter: str, *args: Any, **kwargs: Any
-) -> StorageClass:
+def _addFullStorageClass(butler: Butler, name: str, formatter: str, **kwargs: Any) -> StorageClass:
     """Create a storage class-formatter pair in a repository if it does not
     already exist.
 
@@ -132,7 +134,6 @@ def _addFullStorageClass(
     formatter : `str`
         The formatter to use with the storage class. Ignored if ``butler``
         does not use formatters.
-    *args
     **kwargs
         Arguments, other than ``name``, to the `~lsst.daf.butler.StorageClass`
         constructor.
@@ -145,7 +146,11 @@ class : `lsst.daf.butler.StorageClass`
     """
     storageRegistry = butler._datastore.storageClassFactory
 
-    storage = StorageClass(name, *args, **kwargs)
+    # Use the special constructor to allow a subclass of storage class
+    # to be created. This allows other test storage classes to inherit from
+    # this one.
+    storage_type = storageRegistry.makeNewStorageClass(name, None, **kwargs)
+    storage = storage_type()
     try:
         storageRegistry.registerStorageClass(storage)
     except ValueError: