try to reset log-level after setting it (#10800)

dvc/cli/__init__.py

@@ -157,6 +157,8 @@ def main(argv=None):  # noqa: C901, PLR0912, PLR0915
     Returns:
         int: command's return code.
     """
+    from contextlib import ExitStack
+
     from dvc._debug import debugtools
     from dvc.config import ConfigError
     from dvc.exceptions import DvcException, NotDvcRepoError
@@ -173,12 +175,11 @@ def main(argv=None):  # noqa: C901, PLR0912, PLR0915
         logging.disable(logging.INFO)
 
     args = None
-
-    outer_log_level = logger.level
-    level = None
+    stack = ExitStack()
     try:
         args = parse_args(argv)
 
+        level = None
         if args.quiet:
             level = logging.CRITICAL
         elif args.verbose == 1:
@@ -187,7 +188,7 @@ def main(argv=None):  # noqa: C901, PLR0912, PLR0915
             level = logging.TRACE  # type: ignore[attr-defined]
 
         if level is not None:
-            set_loggers_level(level)
+            stack.enter_context(set_loggers_level(level))
 
         if level and level <= logging.DEBUG:
             from platform import platform, python_implementation, python_version
@@ -247,7 +248,7 @@ def main(argv=None):  # noqa: C901, PLR0912, PLR0915
 
         return ret
     finally:
-        logger.setLevel(outer_log_level)
+        stack.close()
 
         from dvc.repo.open_repo import clean_repos
 

dvc/logger.py

@@ -5,6 +5,8 @@ import logging.config
 import logging.handlers
 import os
 import sys
+from collections.abc import Iterator
+from contextlib import contextmanager
 from typing import ClassVar
 
 import colorama
@@ -174,9 +176,19 @@ def _iter_causes(exc):
         exc = exc.__cause__
 
 
-def set_loggers_level(level: int = logging.INFO) -> None:
+@contextmanager
+def set_loggers_level(level: int = logging.INFO) -> Iterator[None]:
+    ret: dict[logging.Logger, int] = {}
     for name in ["dvc", "dvc_objects", "dvc_data"]:
-        logging.getLogger(name).setLevel(level)
+        _logger = logging.getLogger(name)
+        ret[_logger] = _logger.getEffectiveLevel()
+        _logger.setLevel(level)
+
+    try:
+        yield
+    finally:
+        for _logger, old_lvl in ret.items():
+            _logger.setLevel(old_lvl)
 
 
 def setup(level: int = logging.INFO, log_colors: bool = True) -> None:

dvc/repo/experiments/executor/base.py

@@ -1,20 +1,21 @@
-import logging
 import os
 import pickle
 import shutil
 from abc import ABC, abstractmethod
 from collections.abc import Iterable, Iterator
-from contextlib import contextmanager
+from contextlib import AbstractContextManager, contextmanager
 from dataclasses import asdict, dataclass
 from enum import IntEnum
 from itertools import chain
 from typing import TYPE_CHECKING, Any, Callable, NamedTuple, Optional, Union
 
+from funcy import nullcontext
 from scmrepo.exceptions import SCMError
 
 from dvc.env import DVC_EXP_AUTO_PUSH, DVC_EXP_GIT_REMOTE
 from dvc.exceptions import DvcException
 from dvc.log import logger
+from dvc.logger import set_loggers_level
 from dvc.repo.experiments.exceptions import ExperimentExistsError
 from dvc.repo.experiments.refs import EXEC_BASELINE, EXEC_BRANCH, ExpRefInfo
 from dvc.repo.experiments.utils import to_studio_params
@@ -466,8 +467,8 @@ class BaseExecutor(ABC):
 
         if queue is not None:
             queue.put((rev, os.getpid()))
-        if log_errors and log_level is not None:
-            cls._set_log_level(log_level)
+
+        log_ctx = cls._set_log_level(log_level) if log_errors else nullcontext()
 
         exp_hash: Optional[str] = None
         exp_ref: Optional[ExpRefInfo] = None
@@ -476,14 +477,17 @@ class BaseExecutor(ABC):
         if info.name:
             ui.write(f"Reproducing experiment '{info.name}'")
 
-        with cls._repro_dvc(
+        with (
+            log_ctx,
+            cls._repro_dvc(
                 info,
                 infofile,
                 log_errors=log_errors,
                 copy_paths=copy_paths,
                 message=message,
                 **kwargs,
-        ) as dvc:
+            ) as dvc,
+        ):
             args, kwargs = cls._repro_args(dvc)
             if args:
                 targets: Optional[Union[list, str]] = args[0]
@@ -786,13 +790,10 @@ class BaseExecutor(ABC):
         return orig_rev
 
     @staticmethod
-    def _set_log_level(level):
-        # When executor.reproduce is run in a multiprocessing child process,
-        # dvc.cli.main will not be called for that child process so we need to
-        # setup logging ourselves
-        dvc_logger = logging.getLogger("dvc")
+    def _set_log_level(level: Optional[int]) -> AbstractContextManager[None]:
         if level is not None:
-            dvc_logger.setLevel(level)
+            return set_loggers_level(level)
+        return nullcontext()
 
     @staticmethod
     def _copy_path(src, dst):

pyproject.toml

@@ -175,7 +175,6 @@ filterwarnings = [
     "ignore:unclosed database.*sqlite3.Connection:ResourceWarning",
     "ignore:unclosed.*<socket.socket:ResourceWarning",
 ]
-log_level = "debug"
 markers = [
     "needs_internet: Might need network access for the tests",
     "studio: Tests verifying contract between DVC and Studio",

tests/conftest.py

@@ -1,7 +1,7 @@
 import json
 import os
 import sys
-from contextlib import suppress
+from contextlib import ExitStack, suppress
 
 import pytest
 
@@ -46,10 +46,10 @@ def reset_loglevel(request, caplog):
         ini_opt = request.config.getini("log_level")
 
     level = request.config.getoption("--log-level") or ini_opt
+    with ExitStack() as stack:
         if level:
-        with caplog.at_level(level.upper(), logger="dvc"):
-            yield
-    else:
+            for name in ["dvc", "dvc_data", "dvc_objects"]:
+                stack.enter_context(caplog.at_level(level.upper(), logger=name))
         yield
 
 

tests/func/artifacts/test_artifacts.py

@@ -4,6 +4,7 @@ from copy import deepcopy
 
 import pytest
 
+from dvc import env
 from dvc.annotations import Artifact
 from dvc.exceptions import ArtifactNotFoundError, InvalidArgumentError
 from dvc.repo.artifacts import Artifacts, check_name_format
@@ -283,7 +284,13 @@ def test_artifacts_download_subrepo(tmp_dir, scm, sub):
         assert Artifacts.get(".", name, force=True) == result
 
 
-def test_artifacts_download_studio(tmp_dir, dvc, mocker):
+def test_artifacts_download_studio(monkeypatch, tmp_dir, dvc, mocker, tmp_path_factory):
+    global_config_dir = tmp_path_factory.mktemp("global_config")
+    monkeypatch.setenv(env.DVC_GLOBAL_CONFIG_DIR, str(global_config_dir))
+    # reset config to ensure it picks up the new global config
+    dvc.__dict__.pop("config")
+    assert dvc.config.files["global"] == os.fspath(global_config_dir / "config")
+
     with dvc.config.edit("global") as conf:
         conf["studio"]["token"] = "mytoken"
 

tests/func/test_run_cache.py

@@ -238,9 +238,9 @@ def test_push_pull_unsupported(tmp_dir, dvc, mocker, run_copy, local_remote, cap
     mocker.patch.object(
         dvc.cloud, "get_remote_odb", side_effect=RunCacheNotSupported("foo")
     )
-    with caplog.at_level(logging.DEBUG):
+    with caplog.at_level(logging.DEBUG, logger="dvc"):
         dvc.push(run_cache=True)
         assert "failed to push run cache" in caplog.text
-    with caplog.at_level(logging.DEBUG):
+    with caplog.at_level(logging.DEBUG, logger="dvc"):
         dvc.pull(run_cache=True)
         assert "failed to pull run cache" in caplog.text

tests/integration/test_studio_live_experiments.py

@@ -29,7 +29,7 @@ def test_post_to_studio(
     monkeypatch.setenv(DVC_STUDIO_REPO_URL, "STUDIO_REPO_URL")
     monkeypatch.setenv(DVC_STUDIO_TOKEN, "STUDIO_TOKEN")
     monkeypatch.setenv(DVC_STUDIO_URL, "https://0.0.0.0")
-    monkeypatch.setenv(DVC_STUDIO_OFFLINE, offline)
+    monkeypatch.setenv(DVC_STUDIO_OFFLINE, str(offline))
     if dvc_exp_git_remote:
         monkeypatch.setenv(DVC_EXP_GIT_REMOTE, dvc_exp_git_remote)