def has_valid_os_image(self):
"""
Check if OS image exists and is fresh enough.
"""
if not self.storage.exists(distro.distro_image_filename()):
return False
os_mtime = self.storage.mtime(distro.distro_image_filename())
delta = datetime.datetime.now() - os_mtime
if delta > datetime.timedelta(days=self.config.bootstrap.maxage):
log.info("OS image is too old (%d days)" % delta.days)
self.storage.delete(distro.distro_image_filename())
return False
return True
def handle(self, *args, **options):
builder = OSBuilder(settings.UPAAS_CONFIG)
if options['force'] or not builder.has_valid_os_image():
if getuid() != 0 and not options['as_user']:
log.error("You must run this command as root user, aborting")
exit(1)
if builder.storage.exists(distro_image_filename()):
log.info("Deleting current OS image")
try:
builder.storage.delete(distro_image_filename())
except StorageError:
log.error("Deletion failed")
exit(2)
try:
builder.bootstrap_os()
except exceptions.OSBootstrapError:
log.error("Bootstrap failed")
exit(3)
except StorageError:
log.error("Upload failed")
exit(4)
else:
log.info("Bootstrap not needed, skipping (use --force to run "
"bootstrap anyway)")
def bootstrap_os(self):
"""
Bootstrap base OS image.
"""
log.info("Bootstrapping new OS image")
# directory is encoded into string to prevent unicode errors
directory = tempfile.mkdtemp(dir=self.config.paths.workdir,
prefix="upaas_bootstrap_")
log.debug("Created temporary directory for bootstrap at "
"'%s'" % directory)
for cmd in self.config.bootstrap.commands:
cmd = cmd.replace("%workdir%", directory)
try:
commands.execute(cmd, timeout=self.config.bootstrap.timelimit,
cwd=directory, env=self.config.bootstrap.env,
strip_envs=True)
except commands.CommandTimeout as e:
log.error("Bootstrap was taking too long and it was killed")
kill_and_remove_dir(directory)
raise exceptions.OSBootstrapError(e)
except commands.CommandFailed as e:
log.error("Bootstrap command failed")
kill_and_remove_dir(directory)
raise exceptions.OSBootstrapError(e)
log.info("All commands completed, installing packages")
self.install_packages(directory, self.config.bootstrap.packages)
log.info("Bootstrap done, packing image")
archive_path = os.path.join(directory, "image.tar.gz")
if not tar.pack_tar(directory, archive_path,
timeout=self.config.bootstrap.timelimit):
kill_and_remove_dir(directory)
raise exceptions.OSBootstrapError("Tar error")
else:
log.info("Image packed, uploading")
try:
self.storage.put(archive_path, distro.distro_image_filename())
except Exception as e:
log.error("Upload failed: %s" % e)
raise
log.info("Image uploaded")
kill_and_remove_dir(directory)
log.info("All done")
def unpack_os(self, directory, workdir, system_filename=None):
empty_os_image = False
if not system_filename:
system_filename = distro.distro_image_filename()
empty_os_image = True
os_image_path = os.path.join(directory, "os.image")
log.info("Fetching OS image '%s'" % system_filename)
try:
self.storage.get(system_filename, os_image_path)
except StorageError:
log.error("Storage error while fetching OS image")
return False
else:
log.info("Unpacking OS image")
if not tar.unpack_tar(os_image_path, workdir):
log.error("Error while unpacking OS image to '%s'" % workdir)
return False
# verify if os is working
log.info("Checking if OS image is working (will execute /bin/true)")
try:
with Chroot(workdir):
commands.execute('/bin/true',
timeout=self.config.commands.timelimit,
output_loglevel=logging.INFO)
except Exception as e:
log.error("Broken OS image! /bin/true failed: %s" % e)
if empty_os_image:
try:
self.storage.delete(system_filename)
except StorageError as e:
log.error("Storage error while deleting OS image: %s" % e)
else:
log.info("Deleted broken OS image from storage")
self.bootstrap_os()
return self.unpack_os(directory, workdir,
system_filename=system_filename)
return False
else:
return True