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#!/usr/bin/env python3
#
# Copyright 2018, The Android Open Source Project
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import argparse
import subprocess
import sys
import shlex
def main():
parser = argparse.ArgumentParser(
description='Runs a command while collecting logcat in the background')
parser.add_argument('--output', '-o',
type=lambda f: open(f,'w'),
required=True,
action='store',
help='File to store the logcat to. Will be created if not already existing')
parser.add_argument('--logcat-invoke',
action='store',
default='adb logcat',
help="""Command to run to retrieve logcat data. Defaults to 'adb logcat'.
It will be run in the background and killed by SIGTERM when the 'command'
finishes.""")
parser.add_argument('command',
action='store',
nargs=argparse.REMAINDER,
help='The command to run with logcat in the background.')
args = parser.parse_args()
if len(args.command) == 0:
print("Must have some command to run.", file=sys.stderr)
parser.print_help(file=sys.stderr)
return 1
# Send all output from logcat to the file.
with subprocess.Popen(shlex.split(args.logcat_invoke),
stdout=args.output,
stderr=subprocess.STDOUT,
shell=False,
universal_newlines=True) as logcat_proc:
# Let the run-test-proc inherit our stdout FDs
with subprocess.Popen(shlex.split(args.command[0]) if len(args.command) == 1 else args.command,
stdout=None,
stderr=None,
shell=False) as run_test_proc:
# Don't actually do anything. Just let the run-test proc finish.
pass
# Send SIGTERM to the logcat process.
logcat_proc.kill()
return 0
if __name__ == '__main__':
sys.exit(main())