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test_filesink_rotation.py
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import pytest
import datetime
import importlib
import os
import re
import sys
import time
import tempfile
import pathlib
import platform
import builtins
from collections import namedtuple
from unittest.mock import MagicMock
import loguru
from loguru import logger
@pytest.fixture
def tmpdir_local(reset_logger):
# Pytest 'tmpdir' creates directories in /tmp, but /tmp does not support xattr, tests would fail
with tempfile.TemporaryDirectory(dir=".") as tempdir:
yield pathlib.Path(tempdir)
logger.remove() # Deleting file not possible if still in use by Loguru
@pytest.fixture
def monkeypatch_filesystem(monkeypatch):
def monkeypatch_filesystem(raising=None, crtime=None, patch_xattr=False, patch_win32=False):
filesystem = {}
__open__ = open
__stat_result__ = os.stat_result
__stat__ = os.stat
class StatWrapper:
def __init__(self, wrapped, timestamp=None):
self._wrapped = wrapped
self._timestamp = timestamp
def __getattr__(self, name):
if name == raising:
raise AttributeError
if name == crtime:
return self._timestamp
return getattr(self._wrapped, name)
def patched_stat(filepath):
stat = __stat__(filepath)
wrapped = StatWrapper(stat, filesystem.get(os.path.abspath(filepath)))
return wrapped
def patched_open(filepath, *args, **kwargs):
if not os.path.exists(filepath):
filesystem[os.path.abspath(filepath)] = loguru._datetime.datetime.now().timestamp()
return __open__(filepath, *args, **kwargs)
def patched_setxattr(filepath, attr, val, *arg, **kwargs):
filesystem[(os.path.abspath(filepath), attr)] = val
def patched_getxattr(filepath, attr, *args, **kwargs):
try:
return filesystem[(os.path.abspath(filepath), attr)]
except KeyError:
raise OSError
def patched_setctime(filepath, timestamp):
filesystem[os.path.abspath(filepath)] = timestamp
monkeypatch.setattr(os, "stat_result", StatWrapper(__stat_result__))
monkeypatch.setattr(os, "stat", patched_stat)
monkeypatch.setattr(builtins, "open", patched_open)
if patch_xattr:
monkeypatch.setattr(os, "setxattr", patched_setxattr, raising=False)
monkeypatch.setattr(os, "getxattr", patched_getxattr, raising=False)
if patch_win32:
win32_setctime = MagicMock(SUPPORTED=True, setctime=patched_setctime)
monkeypatch.setitem(sys.modules, "win32_setctime", win32_setctime)
ctime_functions = importlib.reload(loguru._ctime_functions)
monkeypatch.setattr(loguru._file_sink, "get_ctime", ctime_functions.get_ctime)
monkeypatch.setattr(loguru._file_sink, "set_ctime", ctime_functions.set_ctime)
return monkeypatch_filesystem
@pytest.fixture
def windows_filesystem(monkeypatch, monkeypatch_filesystem):
monkeypatch.setattr(os, "name", "nt")
monkeypatch_filesystem(raising="st_birthtime", crtime="st_ctime", patch_win32=True)
@pytest.fixture
def darwin_filesystem(monkeypatch, monkeypatch_filesystem):
monkeypatch.setattr(os, "name", "posix")
monkeypatch.delattr(os, "setxattr", raising=False)
monkeypatch.delattr(os, "getxattr", raising=False)
monkeypatch_filesystem(crtime="st_birthtime")
@pytest.fixture
def linux_filesystem(monkeypatch, monkeypatch_filesystem):
monkeypatch.setattr(os, "name", "posix")
monkeypatch_filesystem(raising="st_birthtime", crtime="st_mtime", patch_xattr=True)
@pytest.fixture
def linux_no_xattr_filesystem(monkeypatch, monkeypatch_filesystem):
def raising(*args, **kwargs):
raise OSError
monkeypatch.setattr(os, "name", "posix")
monkeypatch_filesystem(raising="st_birthtime", crtime="st_mtime")
monkeypatch.setattr(os, "setxattr", raising, raising=False)
monkeypatch.setattr(os, "getxattr", raising, raising=False)
def test_renaming(tmpdir):
i = logger.add(str(tmpdir.join("file.log")), rotation=0, format="{message}")
time.sleep(0.1)
logger.debug("a")
files = sorted(tmpdir.listdir())
assert len(files) == 2
assert re.match(r"file\.[0-9-_]+\.log", files[0].basename)
assert files[1].basename == "file.log"
assert files[0].read() == ""
assert files[1].read() == "a\n"
time.sleep(0.1)
logger.debug("b")
files = sorted(tmpdir.listdir())
assert len(files) == 3
assert all(re.match(r"file\.[0-9-_]+\.log", f.basename) for f in files[:2])
assert files[2].basename == "file.log"
assert files[0].read() == ""
assert files[1].read() == "a\n"
assert files[2].read() == "b\n"
def test_no_renaming(monkeypatch_date, tmpdir):
monkeypatch_date(2018, 1, 1, 0, 0, 0, 0)
i = logger.add(str(tmpdir.join("file_{time}.log")), rotation=0, format="{message}")
monkeypatch_date(2019, 1, 1, 0, 0, 0, 0)
logger.debug("a")
assert tmpdir.join("file_2018-01-01_00-00-00_000000.log").read() == ""
assert tmpdir.join("file_2019-01-01_00-00-00_000000.log").read() == "a\n"
monkeypatch_date(2020, 1, 1, 0, 0, 0, 0)
logger.debug("b")
assert tmpdir.join("file_2018-01-01_00-00-00_000000.log").read() == ""
assert tmpdir.join("file_2019-01-01_00-00-00_000000.log").read() == "a\n"
assert tmpdir.join("file_2020-01-01_00-00-00_000000.log").read() == "b\n"
@pytest.mark.parametrize("size", [8, 8.0, 7.99, "8 B", "8e-6MB", "0.008 kiB", "64b"])
def test_size_rotation(monkeypatch_date, tmpdir, size):
monkeypatch_date(2018, 1, 1, 0, 0, 0, 0)
file = tmpdir.join("test_{time}.log")
i = logger.add(str(file), format="{message}", rotation=size, mode="w")
monkeypatch_date(2018, 1, 1, 0, 0, 1, 0)
logger.debug("abcde")
monkeypatch_date(2018, 1, 1, 0, 0, 2, 0)
logger.debug("fghij")
monkeypatch_date(2018, 1, 1, 0, 0, 3, 0)
logger.debug("klmno")
monkeypatch_date(2018, 1, 1, 0, 0, 4, 0)
logger.remove(i)
assert len(tmpdir.listdir()) == 3
assert tmpdir.join("test_2018-01-01_00-00-00_000000.log").read() == "abcde\n"
assert tmpdir.join("test_2018-01-01_00-00-02_000000.log").read() == "fghij\n"
assert tmpdir.join("test_2018-01-01_00-00-03_000000.log").read() == "klmno\n"
@pytest.mark.parametrize(
"when, hours",
[
# hours = [Should not trigger, should trigger, should not trigger, should trigger, should trigger]
("13", [0, 1, 20, 4, 24]),
("13:00", [0.2, 0.9, 23, 1, 48]),
("13:00:00", [0.5, 1.5, 10, 15, 72]),
("13:00:00.123456", [0.9, 2, 10, 15, 256]),
("11:00", [22.9, 0.2, 23, 1, 24]),
("w0", [11, 1, 24 * 7 - 1, 1, 24 * 7]),
("W0 at 00:00", [10, 24 * 7 - 5, 0.1, 24 * 30, 24 * 14]),
("W6", [24, 24 * 28, 24 * 5, 24, 364 * 24]),
("saturday", [25, 25 * 12, 0, 25 * 12, 24 * 8]),
("w6 at 00", [8, 24 * 7, 24 * 6, 24, 24 * 8]),
(" W6 at 13 ", [0.5, 1, 24 * 6, 24 * 6, 365 * 24]),
("w2 at 11:00:00 AM", [48 + 22, 3, 24 * 6, 24, 366 * 24]),
("MoNdAy at 11:00:30.123", [22, 24, 24, 24 * 7, 24 * 7]),
("sunday", [0.1, 24 * 7 - 10, 24, 24 * 6, 24 * 7]),
("SUNDAY at 11:00", [1, 24 * 7, 2, 24 * 7, 30 * 12]),
("sunDAY at 1:0:0.0 pm", [0.9, 0.2, 24 * 7 - 2, 3, 24 * 8]),
(datetime.time(15), [2, 3, 19, 5, 24]),
(datetime.time(18, 30, 11, 123), [1, 5.51, 20, 24, 40]),
("2 h", [1, 2, 0.9, 0.5, 10]),
("1 hour", [0.5, 1, 0.1, 100, 1000]),
("7 days", [24 * 7 - 1, 1, 48, 24 * 10, 24 * 365]),
("1h 30 minutes", [1.4, 0.2, 1, 2, 10]),
("1 w, 2D", [24 * 8, 24 * 2, 24, 24 * 9, 24 * 9]),
("1.5d", [30, 10, 0.9, 48, 35]),
("1.222 hours, 3.44s", [1.222, 0.1, 1, 1.2, 2]),
(datetime.timedelta(hours=1), [0.9, 0.2, 0.7, 0.5, 3]),
(datetime.timedelta(minutes=30), [0.48, 0.04, 0.07, 0.44, 0.5]),
("hourly", [0.9, 0.2, 0.8, 3, 1]),
("daily", [11, 1, 23, 1, 24]),
("WEEKLY", [11, 2, 24 * 6, 24, 24 * 7]),
("mOnthLY", [0, 24 * 13, 29 * 24, 60 * 24, 24 * 35]),
("monthly", [10 * 24, 30 * 24 * 6, 24, 24 * 7, 24 * 31]),
("Yearly ", [100, 24 * 7 * 30, 24 * 300, 24 * 100, 24 * 400]),
],
)
def test_time_rotation(monkeypatch_date, darwin_filesystem, tmpdir, when, hours):
now = datetime.datetime(2017, 6, 18, 12, 0, 0) # Sunday
monkeypatch_date(
now.year, now.month, now.day, now.hour, now.minute, now.second, now.microsecond
)
i = logger.add(str(tmpdir.join("test_{time}.log")), format="{message}", rotation=when, mode="w")
for h, m in zip(hours, ["a", "b", "c", "d", "e"]):
now += datetime.timedelta(hours=h)
monkeypatch_date(
now.year, now.month, now.day, now.hour, now.minute, now.second, now.microsecond
)
logger.debug(m)
logger.remove(i)
assert [f.read() for f in sorted(tmpdir.listdir())] == ["a\n", "b\nc\n", "d\n", "e\n"]
def test_time_rotation_dst(monkeypatch_date, darwin_filesystem, tmpdir):
monkeypatch_date(2018, 10, 27, 5, 0, 0, 0, "CET", 3600)
i = logger.add(str(tmpdir.join("test_{time}.log")), format="{message}", rotation="1 day")
logger.debug("First")
monkeypatch_date(2018, 10, 28, 5, 30, 0, 0, "CEST", 7200)
logger.debug("Second")
monkeypatch_date(2018, 10, 29, 6, 0, 0, 0, "CET", 3600)
logger.debug("Third")
logger.remove(i)
assert len(tmpdir.listdir()) == 3
assert tmpdir.join("test_2018-10-27_05-00-00_000000.log").read() == "First\n"
assert tmpdir.join("test_2018-10-28_05-30-00_000000.log").read() == "Second\n"
assert tmpdir.join("test_2018-10-29_06-00-00_000000.log").read() == "Third\n"
@pytest.mark.parametrize("delay", [False, True])
def test_time_rotation_reopening_native(tmpdir_local, delay):
filepath = str(tmpdir_local / "test.log")
i = logger.add(filepath, format="{message}", delay=delay, rotation="1 s")
logger.info("1")
time.sleep(0.75)
logger.info("2")
logger.remove(i)
i = logger.add(filepath, format="{message}", delay=delay, rotation="1 s")
logger.info("3")
assert len(list(tmpdir_local.iterdir())) == 1
assert (tmpdir_local / "test.log").read_text() == "1\n2\n3\n"
time.sleep(0.5)
logger.info("4")
assert len(list(tmpdir_local.iterdir())) == 2
assert (tmpdir_local / "test.log").read_text() == "4\n"
logger.remove(i)
time.sleep(0.5)
i = logger.add(filepath, format="{message}", delay=delay, rotation="1 s")
logger.info("5")
assert len(list(tmpdir_local.iterdir())) == 2
assert (tmpdir_local / "test.log").read_text() == "4\n5\n"
time.sleep(0.75)
logger.info("6")
logger.remove(i)
assert len(list(tmpdir_local.iterdir())) == 3
assert (tmpdir_local / "test.log").read_text() == "6\n"
def rotation_reopening(tmpdir, monkeypatch_date, delay):
monkeypatch_date(2018, 10, 27, 5, 0, 0, 0)
filepath = tmpdir.join("test.log")
i = logger.add(str(filepath), format="{message}", delay=delay, rotation="2 h")
logger.info("1")
monkeypatch_date(2018, 10, 27, 6, 30, 0, 0)
logger.info("2")
logger.remove(i)
i = logger.add(str(filepath), format="{message}", delay=delay, rotation="2 h")
logger.info("3")
assert len(tmpdir.listdir()) == 1
assert filepath.read() == "1\n2\n3\n"
monkeypatch_date(2018, 10, 27, 7, 30, 0, 0)
logger.info("4")
assert len(tmpdir.listdir()) == 2
assert filepath.read() == "4\n"
logger.remove(i)
monkeypatch_date(2018, 10, 27, 8, 30, 0, 0)
i = logger.add(str(filepath), format="{message}", delay=delay, rotation="2 h")
logger.info("5")
assert len(tmpdir.listdir()) == 2
assert filepath.read() == "4\n5\n"
monkeypatch_date(2018, 10, 27, 10, 0, 0, 0)
logger.info("6")
logger.remove(i)
assert len(tmpdir.listdir()) == 3
assert filepath.read() == "6\n"
@pytest.mark.parametrize("delay", [False, True])
def test_time_rotation_reopening_windows(tmpdir, monkeypatch_date, windows_filesystem, delay):
rotation_reopening(tmpdir, monkeypatch_date, delay)
@pytest.mark.parametrize("delay", [False, True])
def test_time_rotation_reopening_darwin(tmpdir, monkeypatch_date, darwin_filesystem, delay):
rotation_reopening(tmpdir, monkeypatch_date, delay)
@pytest.mark.parametrize("delay", [False, True])
def test_time_rotation_reopening_linux(tmpdir, monkeypatch_date, linux_filesystem, delay):
rotation_reopening(tmpdir, monkeypatch_date, delay)
@pytest.mark.parametrize("delay", [False, True])
def test_time_rotation_reopening_linux_no_xattr(
tmpdir, monkeypatch_date, linux_no_xattr_filesystem, delay
):
rotation_reopening(tmpdir, monkeypatch_date, delay)
def test_time_rotation_windows_no_setctime(
tmpdir, windows_filesystem, monkeypatch, monkeypatch_date
):
win32_setctime = MagicMock(SUPPORTED=False)
monkeypatch.setitem(sys.modules, "win32_setctime", win32_setctime)
monkeypatch_date(2018, 10, 27, 5, 0, 0, 0)
i = logger.add(str(tmpdir.join("test.{time}.log")), format="{message}", rotation="2 h")
logger.info("1")
monkeypatch_date(2018, 10, 27, 6, 30, 0, 0)
logger.info("2")
assert len(tmpdir.listdir()) == 1
monkeypatch_date(2018, 10, 27, 7, 30, 0, 0)
logger.info("3")
assert len(tmpdir.listdir()) == 2
assert tmpdir.join("test.2018-10-27_05-00-00_000000.log").read() == "1\n2\n"
assert tmpdir.join("test.2018-10-27_07-30-00_000000.log").read() == "3\n"
assert not win32_setctime.setctime.called
def test_function_rotation(monkeypatch_date, tmpdir):
monkeypatch_date(2018, 1, 1, 0, 0, 0, 0)
x = iter([False, True, False])
i = logger.add(
str(tmpdir.join("test_{time}.log")), rotation=lambda *_: next(x), format="{message}"
)
logger.debug("a")
assert tmpdir.join("test_2018-01-01_00-00-00_000000.log").read() == "a\n"
monkeypatch_date(2019, 1, 1, 0, 0, 0, 0)
logger.debug("b")
assert tmpdir.join("test_2019-01-01_00-00-00_000000.log").read() == "b\n"
monkeypatch_date(2020, 1, 1, 0, 0, 0, 0)
logger.debug("c")
assert len(tmpdir.listdir()) == 2
assert tmpdir.join("test_2018-01-01_00-00-00_000000.log").read() == "a\n"
assert tmpdir.join("test_2019-01-01_00-00-00_000000.log").read() == "b\nc\n"
@pytest.mark.parametrize("mode", ["w", "x"])
def test_rotation_at_remove(monkeypatch_date, tmpdir, mode):
monkeypatch_date(2018, 1, 1, 0, 0, 0, 0)
i = logger.add(
str(tmpdir.join("test_{time:YYYY}.log")), rotation="10 MB", mode=mode, format="{message}"
)
logger.debug("test")
logger.remove(i)
assert len(tmpdir.listdir()) == 1
assert tmpdir.join("test_2018.log").read() == "test\n"
@pytest.mark.parametrize("mode", ["a", "a+"])
def test_no_rotation_at_remove(tmpdir, mode):
i = logger.add(str(tmpdir.join("test.log")), rotation="10 MB", mode=mode, format="{message}")
logger.debug("test")
logger.remove(i)
assert len(tmpdir.listdir()) == 1
assert tmpdir.join("test.log").read() == "test\n"
def test_rename_existing_with_creation_time(monkeypatch, tmpdir):
def creation_time(filepath):
assert os.path.isfile(filepath)
assert os.path.basename(filepath) == "test.log"
return datetime.datetime(2018, 1, 1, 0, 0, 0, 0).timestamp()
i = logger.add(str(tmpdir.join("test.log")), rotation=10, format="{message}")
logger.debug("X")
filesink = next(iter(logger._core.handlers.values()))._sink
monkeypatch.setattr(loguru._file_sink, "get_ctime", creation_time)
logger.debug("Y" * 20)
assert len(tmpdir.listdir()) == 2
assert tmpdir.join("test.log").check(exists=1)
assert tmpdir.join("test.2018-01-01_00-00-00_000000.log").check(exists=1)
@pytest.mark.parametrize(
"rotation",
[
"w7",
"w10",
"w-1",
"h",
"M",
"w1at13",
"www",
"13 at w2",
"w",
"K",
"tufy MB",
"111.111.111 kb",
"3 Ki",
"2017.11.12",
"11:99",
"monday at 2017",
"e days",
"2 days 8 pouooi",
"foobar",
"w5 at [not|a|time]",
"[not|a|day] at 12:00",
object(),
os,
datetime.date(2017, 11, 11),
datetime.datetime.now(),
1j,
],
)
def test_invalid_rotation(rotation):
with pytest.raises(ValueError):
logger.add("test.log", rotation=rotation)