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#!/usr/bin/env python3
#
# Copyright 2019, 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.
"""Helper util libraries for calling adb command line."""
import datetime
import os
import re
import sys
import time
from typing import Optional
sys.path.append(os.path.dirname(os.path.dirname(os.path.dirname(
os.path.abspath(__file__)))))
import lib.cmd_utils as cmd_utils
import lib.logcat_utils as logcat_utils
def logcat_save_timestamp() -> str:
"""Gets the current logcat timestamp.
Returns:
A string of timestamp.
"""
_, output = cmd_utils.run_adb_shell_command(
"date -u +\'%Y-%m-%d %H:%M:%S.%N\'")
return output
def vm_drop_cache():
"""Free pagecache and slab object."""
cmd_utils.run_adb_shell_command('echo 3 > /proc/sys/vm/drop_caches')
def root():
"""Roots adb and successive adb commands will run under root."""
cmd_utils.run_shell_command('adb root')
def disable_selinux():
"""Disables selinux setting."""
_, output = cmd_utils.run_adb_shell_command('getenforce')
if output == 'Permissive':
return
print('Disable selinux permissions and restart framework.')
cmd_utils.run_adb_shell_command('setenforce 0')
cmd_utils.run_adb_shell_command('stop')
cmd_utils.run_adb_shell_command('start')
cmd_utils.run_shell_command('adb wait-for-device')
def pkill(procname: str):
"""Kills a process on device specified by the substring pattern in procname"""
_, pids = cmd_utils.run_shell_command('adb shell ps | grep "{}" | '
'awk \'{{print $2;}}\''.
format(procname))
for pid in pids.split('\n'):
pid = pid.strip()
if pid:
passed,_ = cmd_utils.run_adb_shell_command('kill {}'.format(pid))
time.sleep(1)
def parse_time_to_milliseconds(time: str) -> int:
"""Parses the time string to milliseconds."""
# Example: +1s56ms, +56ms
regex = r'\+((?P<second>\d+?)s)?(?P<millisecond>\d+?)ms'
result = re.search(regex, time)
second = 0
if result.group('second'):
second = int(result.group('second'))
ms = int(result.group('millisecond'))
return second * 1000 + ms
def blocking_wait_for_logcat_displayed_time(timestamp: datetime.datetime,
package: str,
timeout: int) -> Optional[int]:
"""Parses the displayed time in the logcat.
Returns:
the displayed time.
"""
pattern = re.compile('.*ActivityTaskManager: Displayed {}.*'.format(package))
# 2019-07-02 22:28:34.469453349 -> 2019-07-02 22:28:34.469453
timestamp = datetime.datetime.strptime(timestamp[:-3],
'%Y-%m-%d %H:%M:%S.%f')
timeout_dt = timestamp + datetime.timedelta(0, timeout)
# 2019-07-01 14:54:21.946 27365 27392 I ActivityTaskManager:
# Displayed com.android.settings/.Settings: +927ms
result = logcat_utils.blocking_wait_for_logcat_pattern(timestamp,
pattern,
timeout_dt)
if not result or not '+' in result:
return None
displayed_time = result[result.rfind('+'):]
return parse_time_to_milliseconds(displayed_time)
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