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# 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 contextlib
import logging
import queue
import shutil
import sys
import threading
import time
from kolla.common import config as common_config
from kolla.common import utils
from kolla.engine_adapter import engine
from kolla.image.kolla_worker import KollaWorker
from kolla.image.utils import LOG
from kolla.image.utils import Status
from oslo_config import cfg
@contextlib.contextmanager
def join_many(threads):
try:
yield
for t in threads:
t.join()
except KeyboardInterrupt:
try:
LOG.info('Waiting for daemon threads exit. Push Ctrl + c again to'
' force exit')
for t in threads:
if t.is_alive():
LOG.debug('Waiting thread %s to exit', t.name)
# NOTE(Jeffrey4l): Python Bug: When join without timeout,
# KeyboardInterrupt is never sent.
t.join(0xffff)
LOG.debug('Thread %s exits', t.name)
except KeyboardInterrupt:
LOG.warning('Force exits')
class WorkerThread(threading.Thread):
"""Thread that executes tasks until the queue provides a tombstone."""
#: Object to be put on worker queues to get them to die.
tombstone = object()
def __init__(self, conf, queue):
super(WorkerThread, self).__init__()
self.queue = queue
self.conf = conf
self.should_stop = False
def run(self):
while not self.should_stop:
task = self.queue.get()
if task is self.tombstone:
# Ensure any other threads also get the tombstone.
self.queue.put(task)
break
try:
for attempt in range(self.conf.retries + 1):
if self.should_stop:
break
LOG.info("Attempt number: %s to run task: %s ",
attempt + 1, task.name)
try:
task.run()
if task.success:
break
except Exception:
LOG.exception('Unhandled error when running %s',
task.name)
# try again...
task.reset()
if task.success and not self.should_stop:
for next_task in task.followups:
LOG.info('Added next task %s to queue',
next_task.name)
self.queue.put(next_task)
finally:
self.queue.task_done()
def run_build():
"""Build container images.
:return: A 6-tuple containing bad, good, unmatched, skipped,
unbuildable and allowed to fail container image status dicts,
or None if no images were built.
"""
conf = cfg.ConfigOpts()
common_config.parse(conf, sys.argv[1:], prog='kolla-build')
if conf.debug:
LOG.setLevel(logging.DEBUG)
if conf.engine not in (engine.Engine.DOCKER.value,
engine.Engine.PODMAN.value):
LOG.error(f'Unsupported engine name "{conf.engine}", exiting.')
sys.exit(1)
LOG.info(f'Using engine: {conf.engine}')
if conf.engine == engine.Engine.DOCKER.value:
try:
import docker
docker.__version__
except ImportError as e:
LOG.error("Error, you have set Docker as container engine, "
"but the Python library is not found."
"Try running 'pip install docker'\n"
"Python error: %s", e)
sys.exit(1)
if conf.buildkit and conf.squash:
LOG.error('--buildkit and --squash are mutually exclusive: '
'docker buildx build does not support squashing.')
sys.exit(1)
if conf.squash:
squash_version = utils.get_docker_squash_version()
LOG.info('Image squash is enabled and "docker-squash" version '
'is %s', squash_version)
if conf.engine == engine.Engine.PODMAN.value:
try:
import podman
podman.__version__
except ImportError as e:
LOG.error("Error, you have set Podman as container engine, "
"but the Python library is not found."
"Try running 'pip install podman'\n"
"Python error: %s", e)
exit(1)
kolla = KollaWorker(conf)
kolla.setup_working_dir()
kolla.find_dockerfiles()
kolla.create_dockerfiles()
kolla.create_patch_files()
kolla.build_image_list()
kolla.find_parents()
kolla.filter_images()
if conf.template_only:
for image in kolla.images:
if image.status == Status.MATCHED:
continue
shutil.rmtree(image.path)
LOG.info('Dockerfiles are generated in %s', kolla.working_dir)
return
# We set the atime and mtime to 0 epoch to preserve allow the Docker cache
# to work like we want. A different size or hash will still force a rebuild
kolla.set_time()
if conf.save_dependency:
kolla.save_dependency(conf.save_dependency)
LOG.info('Container images dependency are saved in %s',
conf.save_dependency)
return
if conf.list_images:
kolla.list_images()
return
if conf.list_dependencies:
kolla.list_dependencies()
return
if (conf.engine == engine.Engine.DOCKER.value and conf.buildkit):
try:
utils.check_docker_buildx()
except Exception:
sys.exit(1)
push_queue = queue.Queue()
build_queue = kolla.build_queue(push_queue)
workers = []
with join_many(workers):
try:
for _ in range(conf.threads):
worker = WorkerThread(conf, build_queue)
worker.daemon = True
worker.start()
workers.append(worker)
for _ in range(conf.push_threads):
worker = WorkerThread(conf, push_queue)
worker.daemon = True
worker.start()
workers.append(worker)
# sleep until build_queue is empty
while build_queue.unfinished_tasks or push_queue.unfinished_tasks:
time.sleep(3)
# ensure all threads exited happily
push_queue.put(WorkerThread.tombstone)
build_queue.put(WorkerThread.tombstone)
except KeyboardInterrupt:
for w in workers:
w.should_stop = True
push_queue.put(WorkerThread.tombstone)
build_queue.put(WorkerThread.tombstone)
raise
if conf.summary:
kolla.summary()
kolla.cleanup()
return kolla.get_image_statuses()
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