97 lines
2.9 KiB
Python
97 lines
2.9 KiB
Python
#!/usr/bin/env python
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#
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# Copyright (C) 2020 The Android Open Source Project
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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#
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import logging
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import subprocess
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import time
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from threading import Timer
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class AdbError(Exception):
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"""Raised when there is an error in adb operations."""
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def __init__(self, cmd, stdout, stderr, ret_code):
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self.cmd = cmd
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self.stdout = stdout
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self.stderr = stderr
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self.ret_code = ret_code
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def __str__(self):
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return ("Error executing adb cmd '%s'. ret: %d, stdout: %s, stderr: %s"
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) % (self.cmd, self.ret_code, self.stdout, self.stderr)
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class ADB(object):
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"""This class to wrap adb command."""
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# Default adb timeout 5 minutes
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DEFAULT_ADB_TIMEOUT = 300
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def __init__(self, serial_number):
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self._serial_number = serial_number
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def Execute(self, cmd_list, timeout=DEFAULT_ADB_TIMEOUT):
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"""Executes a command.
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Args:
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args: Strings, the arguments.
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Returns:
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Stdout as a string, stderr as a string, and return code as an
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integer.
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"""
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cmd = ["adb", "-s", self._serial_number]
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cmd.extend(cmd_list)
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return RunCommand(cmd, timeout)
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def Root(self):
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"""Enable adb root on device."""
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try:
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self.Execute(["root"])
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RETRIES = 3
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for i in range(RETRIES):
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self.Execute(["wait-for-device"])
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# Verify that we haven't raced with the exit of the old,
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# non-root adbd
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out, err, r_code = self.Execute(["shell", "id -un"])
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if r_code == 0 and not err.strip() and out.strip() == "root":
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return True
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time.sleep(1)
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except subprocess.CalledProcessError as e:
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logging.exception(e)
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return False
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def RunCommand(cmd, timeout=None):
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kill = lambda process:process.kill()
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proc = subprocess.Popen(args=cmd,
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stderr=subprocess.PIPE,
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stdout=subprocess.PIPE)
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_timer = Timer(timeout, kill, [proc])
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try:
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_timer.start()
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(out, err) = proc.communicate()
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finally:
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_timer.cancel()
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out = out.decode("utf-8")
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err = err.decode("utf-8")
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if proc.returncode != 0:
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raise AdbError(cmd, out, err, proc.returncode)
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return out, err, proc.returncode
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