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# Copyright 2015 The Chromium OS Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
"""Module builders for bbuildbot."""
from __future__ import print_function
import contextlib
import os
import re
import subprocess
import tempfile
import time
from chromite.cbuildbot import repository
from chromite.cbuildbot.builders import generic_builders
from chromite.cbuildbot.stages import generic_stages
from chromite.cbuildbot.stages import sync_stages
from chromite.lib import cros_build_lib
from chromite.lib import cros_logging as logging
from chromite.lib import osutils
class EmulatorFailedToStart(Exception):
"""The emulator process isn't running after 10 seconds."""
class EmulatorNotReady(Exception):
"""The adb devices command did not discover a valid emulator serial number."""
class BrilloStageBase(generic_stages.BuilderStage):
"""Base class for all symbols build stages."""
def BrilloRoot(self):
"""Root for repo checkout of Brillo."""
# Turn /mnt/data/b/cbuild/android -> /mnt/data/b/cbuild/android_brillo
# We have to be OUTSIDE the build root, since this is a new repo checkout.
# We don't want to be in /tmp both because we might not fit, and because the
# initial sync is expensive enough that we don't want to have to redo it if
# avoidable.
return self._run.buildroot + '_brillo'
def BuildOutput(self):
"""Returns directory for brillo build output."""
return os.path.join(self.BrilloRoot(), 'out')
def FindShellCmd(self, cmd):
target = self._run.config.lunch_target
cmd_list = []
cmd_list.append('. build/envsetup.sh')
cmd_list.append('lunch %s' % target)
cmd_list.append('OUT_DIR=%s' % self.BuildOutput())
cmd_list.append(' '.join(cmd))
return ' && '.join(cmd_list)
def RunLunchCommand(self, cmd, **kwargs):
"""RunCommand with lunch setup."""
# Default directory to run in.
kwargs.setdefault('cwd', self.BrilloRoot())
# We use a shell invocation so environmental variables are preserved.
cmd = self.FindShellCmd(cmd)
return cros_build_lib.RunCommand(cmd, shell=True, **kwargs)
class BrilloCleanStage(BrilloStageBase):
"""Compile the Brillo checkout."""
def PerformStage(self):
"""Clean up Brillo build output."""
osutils.RmDir(self.BuildOutput(), ignore_missing=True)
if self._run.options.clobber:
osutils.RmDir(self.BrilloRoot(), ignore_missing=True)
class BrilloSyncStage(BrilloStageBase):
"""Sync Brillo code to a sub-directory."""
def PerformStage(self):
"""Fetch and/or update the brillo source code."""
osutils.SafeMakedirs(self.BrilloRoot())
brillo_repo = repository.RepoRepository(
manifest_repo_url=self._run.config.brillo_manifest_url,
branch=self._run.config.brillo_manifest_branch,
directory=self.BrilloRoot())
brillo_repo.Initialize()
brillo_repo.Sync()
class BrilloBuildStage(BrilloStageBase):
"""Compile the Brillo checkout."""
def PerformStage(self):
"""Do the build work."""
self.RunLunchCommand(['make', '-j', '32'])
class BrilloVmTestStage(BrilloStageBase):
"""Compile the Brillo checkout."""
@contextlib.contextmanager
def RunEmulator(self):
"""Run an emulator process in the background, kill it on exit."""
with tempfile.NamedTemporaryFile(prefix='emulator') as logfile:
cmd = ['/bin/bash', '-c', self.FindShellCmd([self._run.config.emulator])]
logging.info('Starting emulator: %s', cmd)
p = subprocess.Popen(
args=cmd,
close_fds=True,
stdout=logfile,
stderr=subprocess.STDOUT,
cwd=self.BrilloRoot(),
)
try:
# Give the emulator a little time, and make sure it's still running.
# Failure could be an crash, another copy was left running, etc.
time.sleep(10)
if p.poll() is not None:
logging.error('Emulator is not running after 10 seconds, aborting.')
raise EmulatorFailedToStart()
yield
finally:
if p.poll() is None:
# Kill emulator, if it's still running.
logging.info('Stopping emulator.')
p.terminate()
p.wait()
# Read/dump the emulator output.
logging.info('*')
logging.info('* Emulator Output')
logging.info('*\n%s', osutils.ReadFile(logfile.name))
logging.info('*')
logging.info('* Emulator End')
logging.info('*')
def DiscoverEmulatorSerial(self):
"""Query for the serial number of the emulator.
Returns:
String containing the serial number of the emulator, or None
"""
result = self.RunLunchCommand(
['adb', 'devices'],
redirect_stdout=True,
combine_stdout_stderr=True)
# Command output before we are ready:
# List of devices attached
# emulator-5554 offline
# Command output after we are ready:
# List of devices attached
# emulator-5554 device
m = re.search(r'^([\w-]+)\tdevice$', result.output, re.MULTILINE)
if m:
return m.group(1)
return None
def WaitForEmulatorSerial(self):
"""Retry the query for the emulator serial number, until it's ready.
Returns:
String containing the serial number of the emulator.
Raises:
EmulatorNotReady if we timeout waiting (after several minutes).
"""
for _ in xrange(20):
result = self.DiscoverEmulatorSerial()
if result:
return result
time.sleep(10)
raise EmulatorNotReady()
def PerformStage(self):
"""Run the VM Tests."""
with self.RunEmulator():
# To see the emulator, we must sometimes kill/restart the adb server.
self.RunLunchCommand(['adb', 'kill-server'])
# Wait for the emulator to come up enough to give us a serial number.
serial = self.WaitForEmulatorSerial()
# Run the tests.
logging.info('Running tests against %s', serial)
self.RunLunchCommand(
['external/autotest/site_utils/test_droid.py',
'--debug', serial, 'brillo_WhitelistedGtests'],
cwd=self.BrilloRoot())
class BrilloBuilder(generic_builders.Builder):
"""Builder that performs sync, then exits."""
def GetSyncInstance(self):
"""Returns an instance of a SyncStage that should be run."""
return self._GetStageInstance(sync_stages.SyncStage)
def RunStages(self):
"""Run something after sync/reexec."""
self._RunStage(BrilloCleanStage)
self._RunStage(BrilloSyncStage)
self._RunStage(BrilloBuildStage)
self._RunStage(BrilloVmTestStage)
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