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##############################################################################
# Copyright (c) 2017 Tim Rozet (trozet@redhat.com) and others.
#
# All rights reserved. This program and the accompanying materials
# are made available under the terms of the Apache License, Version 2.0
# which accompanies this distribution, and is available at
# http://www.apache.org/licenses/LICENSE-2.0
##############################################################################
import argparse
import logging
import os
import subprocess
import sys
import uuid
import yaml
CACHE_JOURNAL = 'cache_journal.yaml'
TMP_CACHE = '.cache'
BUILD_ROOT = 'build'
BUILD_LOG_FILE = './apex_build.log'
class ApexBuildException(Exception):
pass
def create_build_parser():
build_parser = argparse.ArgumentParser()
build_parser.add_argument('--debug', action='store_true', default=False,
help="Turn on debug messages")
build_parser.add_argument('-l', '--log-file',
default=BUILD_LOG_FILE,
dest='log_file', help="Log file to log to")
build_parser.add_argument('-c', '--cache-dir',
dest='cache_dir',
default=None,
help='Directory to store cache')
build_parser.add_argument('--iso', action='store_true',
default=False,
help='Build ISO image')
build_parser.add_argument('--rpms', action='store_true',
default=False,
help='Build RPMs')
build_parser.add_argument('-r', '--release',
dest='build_version',
help='Version to apply to build '
'artifact label')
return build_parser
def get_journal(cache_dir):
"""
Search for the journal file and returns its contents
:param cache_dir: cache storage directory where journal file is
:return: content of journal file
"""
journal_file = "{}/{}".format(cache_dir, CACHE_JOURNAL)
if os.path.isfile(journal_file) is False:
logging.info("Journal file not found {}, skipping cache search".format(
journal_file))
else:
with open(journal_file, 'r') as fh:
cache_journal = yaml.safe_load(fh)
assert isinstance(cache_journal, list)
return cache_journal
def get_cache_file(cache_dir):
"""
Searches for a valid cache entry in the cache journal
:param cache_dir: directory where cache and journal are located
:return: name of valid cache file
"""
cache_journal = get_journal(cache_dir)
if cache_journal is not None:
valid_cache = cache_journal[-1]
if os.path.isfile(valid_cache):
return valid_cache
def unpack_cache(cache_dest, cache_dir=None):
if cache_dir is None:
logging.info("Cache directory not provided, skipping cache unpack")
return
elif os.path.isdir(cache_dir) is False:
logging.info("Cache Directory does not exist, skipping cache unpack")
return
else:
logging.info("Cache Directory Found: {}".format(cache_dir))
cache_file = get_cache_file(cache_dir)
if cache_file is None:
logging.info("No cache file detected, skipping cache unpack")
return
logging.info("Unpacking Cache {}".format(cache_file))
if not os.path.exists(cache_dest):
os.makedirs(cache_dest)
try:
subprocess.check_call(["tar", "xvf", cache_file, "-C", cache_dest])
except subprocess.CalledProcessError:
logging.warning("Cache unpack failed")
return
logging.info("Cache unpacked, contents are: {}",
os.listdir(cache_dest))
def build(build_root, version, iso=False, rpms=False):
if iso:
make_targets = ['iso']
elif rpms:
make_targets = ['rpms']
else:
make_targets = ['images', 'rpms-check']
if version is not None:
make_args = ['RELEASE={}'.format(version)]
else:
make_args = []
logging.info('Building targets: {}'.format(make_targets))
try:
output = subprocess.check_output(["make"] + make_args + ["-C",
build_root] + make_targets)
logging.info(output)
except subprocess.CalledProcessError as e:
logging.error("Failed to build Apex artifacts")
logging.error(e.output)
raise e
def build_cache(cache_source, cache_dir):
"""
Tar up new cache with unique name and store it in cache storage
directory. Also update journal file with new cache entry.
:param cache_source: source files to tar up when building cache file
:param cache_dir: cache storage location
:return: None
"""
if cache_dir is None:
logging.info("No cache dir specified, will not build cache")
return
cache_name = 'apex-cache-{}.tgz'.format(str(uuid.uuid4()))
cache_full_path = os.path.join(cache_dir, cache_name)
os.makedirs(cache_dir, exist_ok=True)
try:
subprocess.check_call(['tar', '--atime-preserve', '--dereference',
'-caf', cache_full_path, '-C', cache_source,
'.'])
except BaseException as e:
logging.error("Unable to build new cache tarball")
if os.path.isfile(cache_full_path):
os.remove(cache_full_path)
raise e
if os.path.isfile(cache_full_path):
logging.info("Cache Build Complete")
# update journal
cache_entries = get_journal(cache_dir)
if cache_entries is None:
cache_entries = [cache_name]
else:
cache_entries.append(cache_name)
journal_file = os.path.join(cache_dir, CACHE_JOURNAL)
with open(journal_file, 'w') as fh:
yaml.safe_dump(cache_entries, fh, default_flow_style=False)
logging.info("Journal updated with new entry: {}".format(cache_name))
else:
logging.warning("Cache file did not build correctly")
def prune_cache(cache_dir):
"""
Remove older cache entries if there are more than 2
:param cache_dir: Cache storage directory
:return: None
"""
if cache_dir is None:
return
cache_modified_flag = False
cache_entries = get_journal(cache_dir)
while len(cache_entries) > 2:
logging.debug("Will remove older cache entries")
cache_to_rm = cache_entries[0]
cache_full_path = os.path.join(cache_dir, cache_to_rm)
if os.path.isfile(cache_full_path):
try:
os.remove(cache_full_path)
cache_entries.pop(0)
cache_modified_flag = True
except os.EX_OSERR:
logging.warning("Failed to remove cache file: {}".format(
cache_full_path))
break
else:
logging.debug("No more cache cleanup necessary")
if cache_modified_flag:
logging.debug("Updating cache journal")
journal_file = os.path.join(cache_dir, CACHE_JOURNAL)
with open(journal_file, 'w') as fh:
yaml.safe_dump(cache_entries, fh, default_flow_style=False)
if __name__ == '__main__':
parser = create_build_parser()
args = parser.parse_args(sys.argv[1:])
if args.debug:
log_level = logging.DEBUG
else:
log_level = logging.INFO
os.makedirs(os.path.dirname(args.log_file), exist_ok=True)
formatter = '%(asctime)s %(levelname)s: %(message)s'
logging.basicConfig(filename=args.log_file,
format=formatter,
datefmt='%m/%d/%Y %I:%M:%S %p',
level=log_level)
console = logging.StreamHandler()
console.setLevel(log_level)
console.setFormatter(logging.Formatter(formatter))
logging.getLogger('').addHandler(console)
apex_root = os.path.split(os.getcwd())[0]
for root, dirs, files in os.walk(apex_root):
if BUILD_ROOT in dirs:
apex_root = root
apex_build_root = os.path.join(apex_root, BUILD_ROOT)
if os.path.isdir(apex_build_root):
cache_tmp_dir = os.path.join(apex_root, TMP_CACHE)
else:
logging.error("You must execute this script inside of the Apex "
"local code repository")
raise ApexBuildException("Invalid path for apex root: {}. Must be "
"invoked from within Apex code directory.".
format(apex_root))
unpack_cache(cache_tmp_dir, args.cache_dir)
build(apex_build_root, args.build_version, args.iso, args.rpms)
build_cache(cache_tmp_dir, args.cache_dir)
prune_cache(args.cache_dir)
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