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import os
import time
from unittest.mock import MagicMock
from buildstream._cas.cascache import CASCache
from buildstream._message import MessageType
from buildstream._messenger import Messenger
def test_report_when_cascache_dies_before_asked_to(tmp_path, monkeypatch):
dummy_buildbox_casd = tmp_path.joinpath("buildbox-casd")
dummy_buildbox_casd.write_text("#!/usr/bin/env sh\nexit 0")
dummy_buildbox_casd.chmod(0o777)
monkeypatch.setenv("PATH", str(tmp_path), prepend=os.pathsep)
messenger = MagicMock(spec_set=Messenger)
cache = CASCache(str(tmp_path.joinpath("casd")), casd=True, log_directory=str(tmp_path.joinpath("logs")))
time.sleep(1)
cache.release_resources(messenger)
assert messenger.message.call_count == 1
message = messenger.message.call_args[0][0]
assert message.message_type == MessageType.BUG
assert "0" in message.message
assert "died" in message.message
def test_report_when_cascache_exits_not_cleanly(tmp_path, monkeypatch):
dummy_buildbox_casd = tmp_path.joinpath("buildbox-casd")
dummy_buildbox_casd.write_text("#!/usr/bin/env sh\nwhile :\ndo\nsleep 60\ndone")
dummy_buildbox_casd.chmod(0o777)
monkeypatch.setenv("PATH", str(tmp_path), prepend=os.pathsep)
messenger = MagicMock(spec_set=Messenger)
cache = CASCache(str(tmp_path.joinpath("casd")), casd=True, log_directory=str(tmp_path.joinpath("logs")))
time.sleep(1)
cache.release_resources(messenger)
assert messenger.message.call_count == 1
message = messenger.message.call_args[0][0]
assert message.message_type == MessageType.BUG
assert "-15" in message.message
assert "cleanly" in message.message
def test_report_when_cascache_is_forcefully_killed(tmp_path, monkeypatch):
dummy_buildbox_casd = tmp_path.joinpath("buildbox-casd")
dummy_buildbox_casd.write_text("#!/usr/bin/env sh\ntrap 'echo hello' TERM\nwhile :\ndo\nsleep 60\ndone")
dummy_buildbox_casd.chmod(0o777)
monkeypatch.setenv("PATH", str(tmp_path), prepend=os.pathsep)
messenger = MagicMock(spec_set=Messenger)
cache = CASCache(str(tmp_path.joinpath("casd")), casd=True, log_directory=str(tmp_path.joinpath("logs")))
time.sleep(1)
cache.release_resources(messenger)
assert messenger.message.call_count == 1
message = messenger.message.call_args[0][0]
assert message.message_type == MessageType.WARN
assert "killed" in message.message
def test_casd_redirects_stderr_to_file_and_rotate(tmp_path, monkeypatch):
n_max_log_files = 10
dummy_buildbox_casd = tmp_path.joinpath("buildbox-casd")
dummy_buildbox_casd.write_text("#!/usr/bin/env sh\nprintf '%s\n' hello")
dummy_buildbox_casd.chmod(0o777)
monkeypatch.setenv("PATH", str(tmp_path), prepend=os.pathsep)
casd_files_path = tmp_path.joinpath("casd")
casd_parent_logs_path = tmp_path.joinpath("logs")
casd_logs_path = casd_parent_logs_path.joinpath("_casd")
# Ensure we don't have any files in the log directory
assert not casd_logs_path.exists()
existing_log_files = []
# Let's create the first `n_max_log_files` log files
for i in range(1, n_max_log_files + 1):
cache = CASCache(str(casd_files_path), casd=True, log_directory=str(casd_parent_logs_path))
time.sleep(0.05)
cache.release_resources()
existing_log_files = sorted(casd_logs_path.iterdir())
assert len(existing_log_files) == i
assert existing_log_files[-1].read_text() == "hello\n"
# Ensure the oldest log files get removed first
for _ in range(3):
evicted_file = existing_log_files.pop(0)
cache = CASCache(str(casd_files_path), casd=True, log_directory=str(casd_parent_logs_path))
time.sleep(0.05)
cache.release_resources()
existing_log_files = sorted(casd_logs_path.iterdir())
assert len(existing_log_files) == n_max_log_files
assert evicted_file not in existing_log_files
assert existing_log_files[-1].read_text() == "hello\n"
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