def execute_dockerfile(args):
'''Execution path if given a dockerfile'''
logger.debug('Setting up...')
setup(args.dockerfile)
dockerfile_parse = False
# try to get Docker base image metadata
logger.debug('Loading base image...')
base_image = load_base_image()
logger.debug('Base image loaded...')
# check if the base image added any notices
if base_image.origins.is_empty():
# load any packages from cache
logger.debug('Looking up cache for base image layers...')
if not common.load_from_cache(base_image):
# load any packages using the command library
logger.debug('Retrieving metadata using scripts from base.yml')
container.start_container(base_image.repotag)
common.add_base_packages(base_image)
container.remove_container()
logger.debug('Saving base image layers...')
common.save_to_cache(base_image)
cache.save()
# attempt to get the packages for the rest of the image
# since we only have a dockerfile, we will attempt to build the
# image first
# This step actually needs to go to the beginning but since
# there is no way of tracking imported images from within
# the docker image history, we build after importing the base image
shell, msg = cmdlib.get_image_shell(
cmdlib.get_base_listing(base_image.name, base_image.tag))
if not shell:
shell = constants.shell
logger.debug('Building image...')
build, msg = docker.is_build()
if build:
# attempt to get built image metadata
full_image = load_full_image()
if full_image.origins.is_empty():
# link layer to imported base image
full_image.set_image_import(base_image)
if not common.load_from_cache(full_image):
# find packages per layer
container.start_container(full_image.repotag)
logger.debug('Retrieving metadata using scripts from '
'snippets.yml')
docker.add_packages_from_history(full_image, shell)
container.remove_container()
# record missing layers in the cache
common.save_to_cache(full_image)
cache.save()
logger.debug('Cleaning up...')
container.remove_image(full_image.repotag)
container.remove_image(base_image.repotag)
generate_report(args, full_image)
else:
# we cannot extract the built image's metadata
dockerfile_parse = True
else:
# we cannot build the image
common.save_to_cache(base_image)
dockerfile_parse = True
else:
# something went wrong in getting the base image
dockerfile_parse = True
# check if the dockerfile needs to be parsed
if dockerfile_parse:
cache.save()
logger.debug('Cleaning up...')
container.remove_image(base_image.repotag)
logger.debug('Parsing Dockerfile to generate report...')
stub_image = get_dockerfile_packages()
generate_report(args, base_image, stub_image)
def teardown():
'''Tear down tern setup'''
# save the cache
cache.save()
# remove folders for rootfs operations
rootfs.clean_up()
def save_cache():
cache.save()
