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SSL android_wrench.py   Interaktion und
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#!/usr/bin/env python
# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this file,
# You can obtain one at http://mozilla.org/MPL/2.0/.

import datetime
import enum
import os
import subprocess
import sys
import tempfile
import time

# load modules from parent dir
sys.path.insert(1, os.path.dirname(sys.path[0]))

from mozharness.base.script import BaseScript
from mozharness.mozilla.automation import EXIT_STATUS_DICT, TBPL_FAILURE
from mozharness.mozilla.mozbase import MozbaseMixin
from mozharness.mozilla.testing.android import AndroidMixin
from mozharness.mozilla.testing.testbase import TestingMixin


class TestMode(enum.Enum):
    OPTIMIZED_SHADER_COMPILATION = 0
    UNOPTIMIZED_SHADER_COMPILATION = 1
    SHADER_TEST = 2
    REFTEST = 3


class AndroidWrench(TestingMixin, BaseScript, MozbaseMixin, AndroidMixin):
    def __init__(self, require_config_file=False):
        # code in BaseScript.__init__ iterates all the properties to attach
        # pre- and post-flight listeners, so we need _is_emulator be defined
        # before that happens. Doesn't need to be a real value though.
        self._is_emulator = None

        # Directory for wrench input and output files. Note that we hard-code
        # the path here, rather than using something like self.device.test_root,
        # because it needs to be kept in sync with the path hard-coded inside
        # the wrench source code.
        self.wrench_dir = "/data/data/org.mozilla.wrench/files/wrench"

        super(AndroidWrench, self).__init__()

        # Override AndroidMixin's use_root to ensure we use run-as instead of
        # root to push and pull files from the device, as the latter fails due
        # to permission errors on recent Android versions.
        self.use_root = False

        if self.device_serial is None:
            # Running on an emulator.
            self._is_emulator = True
            self.device_serial = "emulator-5554"
            self.use_gles3 = True
        else:
            # Running on a device, ensure self.is_emulator returns False.
            # The adb binary is preinstalled on the bitbar image and is
            # already on the $PATH.
            self._is_emulator = False
            self._adb_path = "adb"
        self._errored = False

    @property
    def is_emulator(self):
        """Overrides the is_emulator property on AndroidMixin."""
        if self._is_emulator is None:
            self._is_emulator = self.device_serial is None
        return self._is_emulator

    def activate_virtualenv(self):
        """Overrides the method on AndroidMixin to be a no-op, because the
        setup for wrench doesn't require a special virtualenv."""
        pass

    def query_abs_dirs(self):
        if self.abs_dirs:
            return self.abs_dirs

        abs_dirs = {}

        abs_dirs["abs_work_dir"] = os.path.expanduser("~/.wrench")
        if os.environ.get("MOZ_AUTOMATION", "0") == "1":
            # In automation use the standard work dir if there is one
            parent_abs_dirs = super(AndroidWrench, self).query_abs_dirs()
            if "abs_work_dir" in parent_abs_dirs:
                abs_dirs["abs_work_dir"] = parent_abs_dirs["abs_work_dir"]

        abs_dirs["abs_blob_upload_dir"] = os.path.join(abs_dirs["abs_work_dir"], "logs")
        abs_dirs["abs_apk_path"] = os.environ.get(
            "WRENCH_APK", "gfx/wr/target/debug/apk/wrench.apk"
        )
        abs_dirs["abs_reftests_path"] = os.environ.get(
            "WRENCH_REFTESTS", "gfx/wr/wrench/reftests"
        )
        if os.environ.get("MOZ_AUTOMATION", "0") == "1":
            fetches_dir = os.environ.get("MOZ_FETCHES_DIR")
            work_dir = (
                fetches_dir
                if fetches_dir and self.is_emulator
                else abs_dirs["abs_work_dir"]
            )
            abs_dirs["abs_sdk_dir"] = os.path.join(work_dir, "android-sdk-linux")
            abs_dirs["abs_avds_dir"] = os.path.join(work_dir, "android-device")
            abs_dirs["abs_bundletool_path"] = os.path.join(work_dir, "bundletool.jar")
        else:
            mozbuild_path = os.environ.get(
                "MOZBUILD_STATE_PATH", os.path.expanduser("~/.mozbuild")
            )
            mozbuild_sdk = os.environ.get(
                "ANDROID_SDK_HOME", os.path.join(mozbuild_path, "android-sdk-linux")
            )
            abs_dirs["abs_sdk_dir"] = mozbuild_sdk
            avds_dir = os.environ.get(
                "ANDROID_EMULATOR_HOME", os.path.join(mozbuild_path, "android-device")
            )
            abs_dirs["abs_avds_dir"] = avds_dir
            abs_dirs["abs_bundletool_path"] = os.path.join(
                mozbuild_path, "bundletool.jar"
            )

        self.abs_dirs = abs_dirs
        return self.abs_dirs

    def logcat_start(self):
        """Ensures any pre-existing logcat is cleared before starting to record
        the new logcat. This is helpful when running multiple times in a local
        emulator."""
        logcat_cmd = [self.adb_path, "-s", self.device_serial, "logcat", "-c"]
        self.info(" ".join(logcat_cmd))
        subprocess.check_call(logcat_cmd)
        super(AndroidWrench, self).logcat_start()

    def wait_until_process_done(self, process_name, timeout):
        """Waits until the specified process has exited. Polls the process list
            every 5 seconds until the process disappears.

        :param process_name: string containing the package name of the
            application.
        :param timeout: integer specifying the maximum time in seconds
            to wait for the application to finish.
        :returns: boolean - True if the process exited within the indicated
            timeout, False if the process had not exited by the timeout.
        """
        end_time = datetime.datetime.now() + datetime.timedelta(seconds=timeout)
        while self.device.process_exist(process_name, timeout=timeout):
            if datetime.datetime.now() > end_time:
                stop_cmd = [
                    self.adb_path,
                    "-s",
                    self.device_serial,
                    "shell",
                    "am",
                    "force-stop",
                    process_name,
                ]
                subprocess.check_call(stop_cmd)
                return False
            time.sleep(5)

        return True

    def setup_sdcard(self, test_mode):
        self.device.rm(self.wrench_dir, recursive=True, force=True)
        self.device.mkdir(self.wrench_dir, parents=True)
        if test_mode == TestMode.REFTEST:
            self.device.push(
                self.query_abs_dirs()["abs_reftests_path"],
                self.wrench_dir + "/reftests",
            )
        args_file = os.path.join(self.query_abs_dirs()["abs_work_dir"], "wrench_args")
        with open(args_file, "w") as argfile:
            if self.is_emulator:
                argfile.write("env: WRENCH_REFTEST_CONDITION_EMULATOR=1\n")
            else:
                argfile.write("env: WRENCH_REFTEST_CONDITION_DEVICE=1\n")
            if test_mode == TestMode.OPTIMIZED_SHADER_COMPILATION:
                argfile.write("--precache test_init")
            elif test_mode == TestMode.UNOPTIMIZED_SHADER_COMPILATION:
                argfile.write("--precache --use-unoptimized-shaders test_init")
            elif test_mode == TestMode.SHADER_TEST:
                argfile.write("--precache test_shaders")
            elif test_mode == TestMode.REFTEST:
                argfile.write("reftest")
        self.device.push(args_file, self.wrench_dir + "/args")

    def run_tests(self, timeout):
        self.timed_screenshots(None)
        self.device.launch_application(
            app_name="org.mozilla.wrench",
            activity_name="android.app.NativeActivity",
            intent=None,
            grant_runtime_permissions=False,
        )
        self.info("App launched")
        done = self.wait_until_process_done("org.mozilla.wrench", timeout=timeout)
        if not done:
            self._errored = True
            self.error("Wrench still running after timeout")

    def scrape_log(self):
        """Wrench dumps stdout to a file rather than logcat because logcat
        truncates long lines, and the base64 reftest images therefore get
        truncated. In the past we split long lines and stitched them together
        again, but this was unreliable. This scrapes the output file and dumps
        it into our main log.
        """
        logfile = tempfile.NamedTemporaryFile()
        self.device.pull(self.wrench_dir + "/stdout", logfile.name)
        with open(logfile.name, "r", encoding="utf-8") as f:
            self.info("=== scraped log output ===")
            for line in f:
                if "UNEXPECTED-FAIL" in line or "panicked" in line:
                    self._errored = True
                    self.error(line)
                else:
                    self.info(line)
            self.info("=== end scraped log output ===")

    def setup_emulator(self):
        avds_dir = self.query_abs_dirs()["abs_avds_dir"]
        if not os.path.exists(avds_dir):
            self.error("Unable to find android AVDs at %s" % avds_dir)
            return

        sdk_path = self.query_abs_dirs()["abs_sdk_dir"]
        if not os.path.exists(sdk_path):
            self.error("Unable to find android SDK at %s" % sdk_path)
            return
        self.start_emulator()

    def do_test(self):
        if self.is_emulator:
            self.setup_emulator()

        self.verify_device()
        self.info("Logging device properties...")
        self.info(self.shell_output("getprop", attempts=3))
        self.info("Installing APK...")
        self.install_android_app(self.query_abs_dirs()["abs_apk_path"], replace=True)

        if not self._errored:
            self.info("Setting up SD card...")
            self.setup_sdcard(TestMode.OPTIMIZED_SHADER_COMPILATION)
            self.info("Running optimized shader compilation tests...")
            self.run_tests(60)
            self.info("Tests done; parsing log...")
            self.scrape_log()

        if not self._errored:
            self.info("Setting up SD card...")
            self.setup_sdcard(TestMode.UNOPTIMIZED_SHADER_COMPILATION)
            self.info("Running unoptimized shader compilation tests...")
            self.run_tests(60)
            self.info("Tests done; parsing log...")
            self.scrape_log()

        if not self._errored:
            self.info("Setting up SD card...")
            self.setup_sdcard(TestMode.SHADER_TEST)
            self.info("Running shader tests...")
            self.run_tests(60 * 5)
            self.info("Tests done; parsing log...")
            self.scrape_log()

        if not self._errored:
            self.info("Setting up SD card...")
            self.setup_sdcard(TestMode.REFTEST)
            self.info("Running reftests...")
            self.run_tests(60 * 30)
            self.info("Tests done; parsing log...")
            self.scrape_log()

        self.logcat_stop()
        self.info("All done!")

    def check_errors(self):
        if self._errored:
            self.info("Errors encountered, terminating with error code...")
            exit(EXIT_STATUS_DICT[TBPL_FAILURE])


if __name__ == "__main__":
    test = AndroidWrench()
    test.do_test()
    test.check_errors()

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