88 lines
2.8 KiB
Python
88 lines
2.8 KiB
Python
# Licensed under the Apache License, Version 2.0 (the "License");
|
|
# you may not use this file except in compliance with the License.
|
|
# You may obtain a copy of the License at
|
|
#
|
|
# http://www.apache.org/licenses/LICENSE-2.0
|
|
#
|
|
# Unless required by applicable law or agreed to in writing, software
|
|
# distributed under the License is distributed on an "AS IS" BASIS,
|
|
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
# See the License for the specific language governing permissions and
|
|
# limitations under the License.
|
|
|
|
import logging
|
|
import os
|
|
import subprocess # nosec
|
|
import sys
|
|
|
|
|
|
def make_a_logger(conf=None, image_name=None):
|
|
if image_name:
|
|
log = logging.getLogger(".".join([__name__, image_name]))
|
|
else:
|
|
log = logging.getLogger(__name__)
|
|
|
|
if conf is not None and conf.debug:
|
|
loglevel = logging.DEBUG
|
|
else:
|
|
loglevel = logging.INFO
|
|
|
|
if not log.handlers:
|
|
stream_handler = logging.StreamHandler(sys.stderr)
|
|
stream_handler.setFormatter(logging.Formatter(logging.BASIC_FORMAT))
|
|
# NOTE(hrw): quiet mode matters only on console
|
|
if conf is not None and conf.quiet:
|
|
stream_handler.setLevel(logging.CRITICAL)
|
|
else:
|
|
stream_handler.setLevel(loglevel)
|
|
log.addHandler(stream_handler)
|
|
log.propagate = False
|
|
|
|
if conf is not None and conf.logs_dir and image_name:
|
|
filename = os.path.join(conf.logs_dir, "%s.log" % image_name)
|
|
handler = logging.FileHandler(filename, delay=True)
|
|
# NOTE(hrw): logfile will be INFO or DEBUG
|
|
handler.setLevel(loglevel)
|
|
handler.setFormatter(logging.Formatter(logging.BASIC_FORMAT))
|
|
log.addHandler(handler)
|
|
|
|
# NOTE(hrw): needs to be high, handlers have own levels
|
|
log.setLevel(logging.DEBUG)
|
|
return log
|
|
|
|
|
|
LOG = make_a_logger()
|
|
|
|
|
|
def get_docker_squash_version():
|
|
|
|
try:
|
|
stdout = subprocess.check_output( # nosec
|
|
['docker-squash', '--version'], stderr=subprocess.STDOUT)
|
|
return stdout.split()[0]
|
|
except OSError as ex:
|
|
if ex.errno == 2:
|
|
LOG.error(('"docker-squash" command is not found.'
|
|
' try to install it by "pip install docker-squash"'))
|
|
raise
|
|
|
|
|
|
def squash(old_image, new_image,
|
|
from_layer=None,
|
|
cleanup=False,
|
|
tmp_dir=None):
|
|
|
|
cmds = ['docker-squash', '--tag', new_image, old_image]
|
|
if cleanup:
|
|
cmds += ['--cleanup']
|
|
if from_layer:
|
|
cmds += ['--from-layer', from_layer]
|
|
if tmp_dir:
|
|
cmds += ['--tmp-dir', tmp_dir]
|
|
try:
|
|
subprocess.check_output(cmds, stderr=subprocess.STDOUT) # nosec
|
|
except subprocess.CalledProcessError as ex:
|
|
LOG.exception('Get error during squashing image: %s',
|
|
ex.output)
|
|
raise
|