bf603c75cc
A scenario for self-healing and auto-scaling with Heat, Mistral, Zaqar, and Aodh. Change-Id: I652c3b0e0caa433bfd08c0cb35b21507f0897889
132 lines
3.8 KiB
Python
Executable File
132 lines
3.8 KiB
Python
Executable File
#!/usr/bin/env python
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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import ast
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import dpath
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import json
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import logging
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import os
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import six
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import subprocess
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import sys
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import warnings
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import yaml
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WORKING_DIR = os.environ.get('HEAT_DOCKER_COMPOSE_WORKING',
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'/var/lib/heat-config/heat-config-docker-compose')
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DOCKER_COMPOSE_CMD = os.environ.get('HEAT_DOCKER_COMPOSE_CMD',
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'docker-compose')
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def prepare_dir(path):
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if not os.path.isdir(path):
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os.makedirs(path, 0o700)
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def write_input_file(file_path, content):
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prepare_dir(os.path.dirname(file_path))
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with os.fdopen(os.open(
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file_path, os.O_CREAT | os.O_WRONLY, 0o600), 'w') as f:
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f.write(content.encode('utf-8'))
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def build_response(deploy_stdout, deploy_stderr, deploy_status_code):
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return {
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'deploy_stdout': deploy_stdout,
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'deploy_stderr': deploy_stderr,
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'deploy_status_code': deploy_status_code,
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}
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def main(argv=sys.argv):
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warnings.warn('This hook is deprecated, please use hooks from heat-agents '
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'repository instead.', DeprecationWarning)
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log = logging.getLogger('heat-config')
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handler = logging.StreamHandler(sys.stderr)
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handler.setFormatter(
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logging.Formatter(
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'[%(asctime)s] (%(name)s) [%(levelname)s] %(message)s'))
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log.addHandler(handler)
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log.setLevel('DEBUG')
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c = json.load(sys.stdin)
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input_values = dict((i['name'], i['value']) for i in c['inputs'])
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proj = os.path.join(WORKING_DIR, c.get('name'))
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prepare_dir(proj)
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stdout, stderr = {}, {}
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if input_values.get('deploy_action') == 'DELETE':
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json.dump(build_response(stdout, stderr, 0), sys.stdout)
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return
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config = c.get('config', '')
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if not config:
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log.debug("No 'config' input found, nothing to do.")
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json.dump(build_response(stdout, stderr, 0), sys.stdout)
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return
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# convert config to dict
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if not isinstance(config, dict):
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config = ast.literal_eval(json.dumps(yaml.safe_load(config)))
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os.chdir(proj)
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compose_env_files = []
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for value in dpath.util.values(config, '*/env_file'):
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if isinstance(value, list):
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compose_env_files.extend(value)
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elif isinstance(value, six.string_types):
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compose_env_files.extend([value])
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input_env_files = {}
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if input_values.get('env_files'):
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input_env_files = dict(
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(i['file_name'], i['content'])
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for i in ast.literal_eval(input_values.get('env_files')))
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for file in compose_env_files:
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if file in input_env_files.keys():
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write_input_file(file, input_env_files.get(file))
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cmd = [
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DOCKER_COMPOSE_CMD,
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'up',
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'-d',
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'--no-build',
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]
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log.debug('Running %s' % cmd)
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subproc = subprocess.Popen(cmd, stdout=subprocess.PIPE,
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stderr=subprocess.PIPE)
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stdout, stderr = subproc.communicate()
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log.debug(stdout)
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log.debug(stderr)
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if subproc.returncode:
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log.error("Error running %s. [%s]\n" % (cmd, subproc.returncode))
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else:
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log.debug('Completed %s' % cmd)
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json.dump(build_response(stdout, stderr, subproc.returncode), sys.stdout)
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if __name__ == '__main__':
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sys.exit(main(sys.argv))
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