OpenStack Orchestration (Heat) Agents
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#!/usr/bin/env 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 ast
import json
import logging
import os
import subprocess
import sys
import yaml
WORKING_DIR = os.environ.get('HEAT_DOCKER_COMPOSE_WORKING',
'/var/lib/heat-config/heat-config-docker-compose')
DOCKER_COMPOSE_CMD = os.environ.get('HEAT_DOCKER_COMPOSE_CMD',
'docker-compose')
def prepare_dir(path):
if not os.path.isdir(path):
os.makedirs(path, 0o700)
def write_input_file(file_path, content):
prepare_dir(os.path.dirname(file_path))
with os.fdopen(os.open(
file_path, os.O_CREAT | os.O_WRONLY, 0o600), 'w') as f:
f.write(content)
def build_response(deploy_stdout, deploy_stderr, deploy_status_code):
return {
'deploy_stdout': deploy_stdout.decode('utf-8', 'replace'),
'deploy_stderr': deploy_stderr.decode('utf-8', 'replace'),
'deploy_status_code': deploy_status_code,
}
def main(argv=sys.argv):
log = logging.getLogger('heat-config')
handler = logging.StreamHandler(sys.stderr)
handler.setFormatter(
logging.Formatter(
'[%(asctime)s] (%(name)s) [%(levelname)s] %(message)s'))
log.addHandler(handler)
log.setLevel('DEBUG')
c = json.load(sys.stdin)
input_values = dict((i['name'], i['value']) for i in c['inputs'])
proj = os.path.join(WORKING_DIR, c.get('name'))
prepare_dir(proj)
stdout, stderr = {}, {}
if input_values.get('deploy_action') == 'DELETE':
json.dump(build_response(stdout, stderr, 0), sys.stdout)
return
config = c.get('config', '')
if not config:
log.debug("No 'config' input found, nothing to do.")
json.dump(build_response(stdout, stderr, 0), sys.stdout)
return
# convert config to dict
if not isinstance(config, dict):
config = ast.literal_eval(json.dumps(yaml.safe_load(config)))
os.chdir(proj)
compose_env_files = []
for c in config.values():
value = c.get('env_file', None)
if isinstance(value, list):
compose_env_files.extend(value)
elif isinstance(value, str):
compose_env_files.extend([value])
input_env_files = {}
if input_values.get('env_files'):
input_env_files = dict(
(i['file_name'], i['content'])
for i in ast.literal_eval(input_values.get('env_files')))
for file in compose_env_files:
if file in input_env_files:
write_input_file(file, input_env_files.get(file))
cmd = [
DOCKER_COMPOSE_CMD,
'up',
'-d',
'--no-build',
]
log.debug('Running %s' % cmd)
subproc = subprocess.Popen(cmd, stdout=subprocess.PIPE,
stderr=subprocess.PIPE)
stdout, stderr = subproc.communicate()
log.debug(stdout)
log.debug(stderr)
if subproc.returncode:
log.error("Error running %s. [%s]\n" % (cmd, subproc.returncode))
else:
log.debug('Completed %s' % cmd)
json.dump(build_response(stdout, stderr, subproc.returncode), sys.stdout)
if __name__ == '__main__':
sys.exit(main(sys.argv))