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513 lines
16 KiB
513 lines
16 KiB
#!/usr/bin/env python3
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#
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# Copyright (C) 2016 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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"""Module containing common logic from python testing tools."""
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import abc
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import os
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import signal
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import shlex
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import shutil
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import time
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from enum import Enum
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from enum import unique
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from subprocess import DEVNULL
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from subprocess import check_call
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from subprocess import PIPE
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from subprocess import Popen
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from subprocess import STDOUT
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from subprocess import TimeoutExpired
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from tempfile import mkdtemp
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from tempfile import NamedTemporaryFile
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# Temporary directory path on device.
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DEVICE_TMP_PATH = '/data/local/tmp'
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# Architectures supported in dalvik cache.
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DALVIK_CACHE_ARCHS = ['arm', 'arm64', 'x86', 'x86_64']
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@unique
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class RetCode(Enum):
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"""Enum representing normalized return codes."""
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SUCCESS = 0
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TIMEOUT = 1
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ERROR = 2
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NOTCOMPILED = 3
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NOTRUN = 4
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@unique
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class LogSeverity(Enum):
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VERBOSE = 0
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DEBUG = 1
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INFO = 2
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WARNING = 3
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ERROR = 4
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FATAL = 5
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SILENT = 6
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@property
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def symbol(self):
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return self.name[0]
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@classmethod
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def FromSymbol(cls, s):
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for log_severity in LogSeverity:
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if log_severity.symbol == s:
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return log_severity
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raise ValueError("{0} is not a valid log severity symbol".format(s))
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def __ge__(self, other):
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if self.__class__ is other.__class__:
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return self.value >= other.value
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return NotImplemented
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def __gt__(self, other):
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if self.__class__ is other.__class__:
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return self.value > other.value
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return NotImplemented
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def __le__(self, other):
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if self.__class__ is other.__class__:
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return self.value <= other.value
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return NotImplemented
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def __lt__(self, other):
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if self.__class__ is other.__class__:
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return self.value < other.value
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return NotImplemented
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def GetEnvVariableOrError(variable_name):
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"""Gets value of an environmental variable.
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If the variable is not set raises FatalError.
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Args:
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variable_name: string, name of variable to get.
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Returns:
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string, value of requested variable.
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Raises:
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FatalError: Requested variable is not set.
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"""
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top = os.environ.get(variable_name)
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if top is None:
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raise FatalError('{0} environmental variable not set.'.format(
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variable_name))
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return top
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def _DexArchCachePaths(android_data_path):
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"""Returns paths to architecture specific caches.
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Args:
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android_data_path: string, path dalvik-cache resides in.
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Returns:
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Iterable paths to architecture specific caches.
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"""
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return ('{0}/dalvik-cache/{1}'.format(android_data_path, arch)
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for arch in DALVIK_CACHE_ARCHS)
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def RunCommandForOutput(cmd, env, stdout, stderr, timeout=60):
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"""Runs command piping output to files, stderr or stdout.
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Args:
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cmd: list of strings, command to run.
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env: shell environment to run the command with.
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stdout: file handle or one of Subprocess.PIPE, Subprocess.STDOUT,
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Subprocess.DEVNULL, see Popen.
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stderr: file handle or one of Subprocess.PIPE, Subprocess.STDOUT,
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Subprocess.DEVNULL, see Popen.
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timeout: int, timeout in seconds.
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Returns:
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tuple (string, string, RetCode) stdout output, stderr output, normalized
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return code.
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"""
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proc = Popen(cmd, stdout=stdout, stderr=stderr, env=env,
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universal_newlines=True, start_new_session=True)
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try:
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(output, stderr_output) = proc.communicate(timeout=timeout)
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if proc.returncode == 0:
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retcode = RetCode.SUCCESS
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else:
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retcode = RetCode.ERROR
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except TimeoutExpired:
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os.killpg(os.getpgid(proc.pid), signal.SIGTERM)
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(output, stderr_output) = proc.communicate()
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retcode = RetCode.TIMEOUT
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return (output, stderr_output, retcode)
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def _LogCmdOutput(logfile, cmd, output, retcode):
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"""Logs output of a command.
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Args:
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logfile: file handle to logfile.
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cmd: list of strings, command.
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output: command output.
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retcode: RetCode, normalized retcode.
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"""
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logfile.write('Command:\n{0}\n{1}\nReturn code: {2}\n'.format(
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CommandListToCommandString(cmd), output, retcode))
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def RunCommand(cmd, out, err, timeout=5):
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"""Executes a command, and returns its return code.
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Args:
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cmd: list of strings, a command to execute
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out: string, file name to open for stdout (or None)
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err: string, file name to open for stderr (or None)
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timeout: int, time out in seconds
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Returns:
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RetCode, return code of running command (forced RetCode.TIMEOUT
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on timeout)
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"""
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devnull = DEVNULL
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outf = devnull
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if out is not None:
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outf = open(out, mode='w')
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errf = devnull
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if err is not None:
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errf = open(err, mode='w')
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(_, _, retcode) = RunCommandForOutput(cmd, None, outf, errf, timeout)
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if outf != devnull:
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outf.close()
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if errf != devnull:
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errf.close()
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return retcode
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def CommandListToCommandString(cmd):
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"""Converts shell command represented as list of strings to a single string.
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Each element of the list is wrapped in double quotes.
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Args:
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cmd: list of strings, shell command.
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Returns:
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string, shell command.
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"""
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return ' '.join([shlex.quote(segment) for segment in cmd])
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class FatalError(Exception):
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"""Fatal error in script."""
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class ITestEnv(object):
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"""Test environment abstraction.
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Provides unified interface for interacting with host and device test
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environments. Creates a test directory and expose methods to modify test files
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and run commands.
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"""
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__meta_class__ = abc.ABCMeta
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@abc.abstractmethod
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def CreateFile(self, name=None):
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"""Creates a file in test directory.
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Returned path to file can be used in commands run in the environment.
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Args:
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name: string, file name. If None file is named arbitrarily.
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Returns:
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string, environment specific path to file.
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"""
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@abc.abstractmethod
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def WriteLines(self, file_path, lines):
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"""Writes lines to a file in test directory.
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If file exists it gets overwritten. If file doest not exist it is created.
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Args:
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file_path: string, environment specific path to file.
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lines: list of strings to write.
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"""
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@abc.abstractmethod
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def RunCommand(self, cmd, log_severity=LogSeverity.ERROR):
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"""Runs command in environment.
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Args:
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cmd: list of strings, command to run.
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log_severity: LogSeverity, minimum severity of logs included in output.
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Returns:
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tuple (string, int) output, return code.
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"""
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@abc.abstractproperty
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def logfile(self):
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"""Gets file handle to logfile residing on host."""
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class HostTestEnv(ITestEnv):
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"""Host test environment. Concrete implementation of ITestEnv.
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Maintains a test directory in /tmp/. Runs commands on the host in modified
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shell environment. Mimics art script behavior.
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For methods documentation see base class.
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"""
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def __init__(self, directory_prefix, cleanup=True, logfile_path=None,
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timeout=60, x64=False):
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"""Constructor.
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Args:
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directory_prefix: string, prefix for environment directory name.
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cleanup: boolean, if True remove test directory in destructor.
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logfile_path: string, can be used to specify custom logfile location.
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timeout: int, seconds, time to wait for single test run to finish.
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x64: boolean, whether to setup in x64 mode.
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"""
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self._cleanup = cleanup
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self._timeout = timeout
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self._env_path = mkdtemp(dir='/tmp/', prefix=directory_prefix)
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if logfile_path is None:
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self._logfile = open('{0}/log'.format(self._env_path), 'w+')
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else:
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self._logfile = open(logfile_path, 'w+')
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os.mkdir('{0}/dalvik-cache'.format(self._env_path))
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for arch_cache_path in _DexArchCachePaths(self._env_path):
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os.mkdir(arch_cache_path)
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lib = 'lib64' if x64 else 'lib'
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android_root = GetEnvVariableOrError('ANDROID_HOST_OUT')
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android_i18n_root = android_root + '/com.android.i18n'
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android_art_root = android_root + '/com.android.art'
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android_tzdata_root = android_root + '/com.android.tzdata'
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library_path = android_root + '/' + lib
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path = android_root + '/bin'
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self._shell_env = os.environ.copy()
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self._shell_env['ANDROID_DATA'] = self._env_path
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self._shell_env['ANDROID_ROOT'] = android_root
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self._shell_env['ANDROID_I18N_ROOT'] = android_i18n_root
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self._shell_env['ANDROID_ART_ROOT'] = android_art_root
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self._shell_env['ANDROID_TZDATA_ROOT'] = android_tzdata_root
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self._shell_env['LD_LIBRARY_PATH'] = library_path
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self._shell_env['DYLD_LIBRARY_PATH'] = library_path
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self._shell_env['PATH'] = (path + ':' + self._shell_env['PATH'])
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# Using dlopen requires load bias on the host.
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self._shell_env['LD_USE_LOAD_BIAS'] = '1'
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def __del__(self):
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if self._cleanup:
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shutil.rmtree(self._env_path)
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def CreateFile(self, name=None):
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if name is None:
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f = NamedTemporaryFile(dir=self._env_path, delete=False)
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else:
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f = open('{0}/{1}'.format(self._env_path, name), 'w+')
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return f.name
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def WriteLines(self, file_path, lines):
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with open(file_path, 'w') as f:
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f.writelines('{0}\n'.format(line) for line in lines)
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return
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def RunCommand(self, cmd, log_severity=LogSeverity.ERROR):
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self._EmptyDexCache()
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env = self._shell_env.copy()
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env.update({'ANDROID_LOG_TAGS':'*:' + log_severity.symbol.lower()})
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(output, err_output, retcode) = RunCommandForOutput(
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cmd, env, PIPE, PIPE, self._timeout)
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# We append err_output to output to stay consistent with DeviceTestEnv
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# implementation.
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output += err_output
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_LogCmdOutput(self._logfile, cmd, output, retcode)
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return (output, retcode)
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@property
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def logfile(self):
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return self._logfile
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def _EmptyDexCache(self):
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"""Empties dex cache.
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Iterate over files in architecture specific cache directories and remove
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them.
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"""
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for arch_cache_path in _DexArchCachePaths(self._env_path):
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for file_path in os.listdir(arch_cache_path):
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file_path = '{0}/{1}'.format(arch_cache_path, file_path)
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if os.path.isfile(file_path):
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os.unlink(file_path)
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class DeviceTestEnv(ITestEnv):
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"""Device test environment. Concrete implementation of ITestEnv.
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For methods documentation see base class.
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"""
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def __init__(self, directory_prefix, cleanup=True, logfile_path=None,
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timeout=60, specific_device=None):
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"""Constructor.
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Args:
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directory_prefix: string, prefix for environment directory name.
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cleanup: boolean, if True remove test directory in destructor.
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logfile_path: string, can be used to specify custom logfile location.
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timeout: int, seconds, time to wait for single test run to finish.
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specific_device: string, serial number of device to use.
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"""
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self._cleanup = cleanup
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self._timeout = timeout
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self._specific_device = specific_device
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self._host_env_path = mkdtemp(dir='/tmp/', prefix=directory_prefix)
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if logfile_path is None:
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self._logfile = open('{0}/log'.format(self._host_env_path), 'w+')
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else:
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self._logfile = open(logfile_path, 'w+')
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self._device_env_path = '{0}/{1}'.format(
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DEVICE_TMP_PATH, os.path.basename(self._host_env_path))
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self._shell_env = os.environ.copy()
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self._AdbMkdir('{0}/dalvik-cache'.format(self._device_env_path))
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for arch_cache_path in _DexArchCachePaths(self._device_env_path):
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self._AdbMkdir(arch_cache_path)
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def __del__(self):
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if self._cleanup:
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shutil.rmtree(self._host_env_path)
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check_call(shlex.split(
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'adb shell if [ -d "{0}" ]; then rm -rf "{0}"; fi'
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.format(self._device_env_path)))
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def CreateFile(self, name=None):
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with NamedTemporaryFile(mode='w') as temp_file:
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self._AdbPush(temp_file.name, self._device_env_path)
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if name is None:
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name = os.path.basename(temp_file.name)
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return '{0}/{1}'.format(self._device_env_path, name)
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def WriteLines(self, file_path, lines):
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with NamedTemporaryFile(mode='w') as temp_file:
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temp_file.writelines('{0}\n'.format(line) for line in lines)
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temp_file.flush()
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self._AdbPush(temp_file.name, file_path)
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return
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def _ExtractPid(self, brief_log_line):
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"""Extracts PID from a single logcat line in brief format."""
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pid_start_idx = brief_log_line.find('(') + 2
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if pid_start_idx == -1:
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return None
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pid_end_idx = brief_log_line.find(')', pid_start_idx)
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if pid_end_idx == -1:
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return None
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return brief_log_line[pid_start_idx:pid_end_idx]
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def _ExtractSeverity(self, brief_log_line):
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"""Extracts LogSeverity from a single logcat line in brief format."""
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if not brief_log_line:
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return None
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return LogSeverity.FromSymbol(brief_log_line[0])
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def RunCommand(self, cmd, log_severity=LogSeverity.ERROR):
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self._EmptyDexCache()
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env_vars_cmd = 'ANDROID_DATA={0} ANDROID_LOG_TAGS=*:i'.format(
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self._device_env_path)
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adb_cmd = ['adb']
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if self._specific_device:
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adb_cmd += ['-s', self._specific_device]
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logcat_cmd = adb_cmd + ['logcat', '-v', 'brief', '-s', '-b', 'main',
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'-T', '1', 'dex2oat:*', 'dex2oatd:*']
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logcat_proc = Popen(logcat_cmd, stdout=PIPE, stderr=STDOUT,
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universal_newlines=True)
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cmd_str = CommandListToCommandString(cmd)
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# Print PID of the shell and exec command. We later retrieve this PID and
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# use it to filter dex2oat logs, keeping those with matching parent PID.
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device_cmd = ('echo $$ && ' + env_vars_cmd + ' exec ' + cmd_str)
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cmd = adb_cmd + ['shell', device_cmd]
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(output, _, retcode) = RunCommandForOutput(cmd, self._shell_env, PIPE,
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STDOUT, self._timeout)
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# We need to make sure to only kill logcat once all relevant logs arrive.
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# Sleep is used for simplicity.
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time.sleep(0.5)
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logcat_proc.kill()
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end_of_first_line = output.find('\n')
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if end_of_first_line != -1:
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parent_pid = output[:end_of_first_line]
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output = output[end_of_first_line + 1:]
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logcat_output, _ = logcat_proc.communicate()
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logcat_lines = logcat_output.splitlines(keepends=True)
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dex2oat_pids = []
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for line in logcat_lines:
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# Dex2oat was started by our runtime instance.
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if 'Running dex2oat (parent PID = ' + parent_pid in line:
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dex2oat_pids.append(self._ExtractPid(line))
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break
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if dex2oat_pids:
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for line in logcat_lines:
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if (self._ExtractPid(line) in dex2oat_pids and
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self._ExtractSeverity(line) >= log_severity):
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output += line
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_LogCmdOutput(self._logfile, cmd, output, retcode)
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return (output, retcode)
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@property
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def logfile(self):
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return self._logfile
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def PushClasspath(self, classpath):
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"""Push classpath to on-device test directory.
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Classpath can contain multiple colon separated file paths, each file is
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pushed. Returns analogous classpath with paths valid on device.
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Args:
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classpath: string, classpath in format 'a/b/c:d/e/f'.
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Returns:
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string, classpath valid on device.
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"""
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paths = classpath.split(':')
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device_paths = []
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for path in paths:
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device_paths.append('{0}/{1}'.format(
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self._device_env_path, os.path.basename(path)))
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self._AdbPush(path, self._device_env_path)
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return ':'.join(device_paths)
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def _AdbPush(self, what, where):
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check_call(shlex.split('adb push "{0}" "{1}"'.format(what, where)),
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stdout=self._logfile, stderr=self._logfile)
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def _AdbMkdir(self, path):
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check_call(shlex.split('adb shell mkdir "{0}" -p'.format(path)),
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stdout=self._logfile, stderr=self._logfile)
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def _EmptyDexCache(self):
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"""Empties dex cache."""
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|
for arch_cache_path in _DexArchCachePaths(self._device_env_path):
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cmd = 'adb shell if [ -d "{0}" ]; then rm -f "{0}"/*; fi'.format(
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arch_cache_path)
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check_call(shlex.split(cmd), stdout=self._logfile, stderr=self._logfile)
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