148 lines
4.3 KiB
Python
148 lines
4.3 KiB
Python
#!/usr/bin/python
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# -*- coding: utf-8 -*-
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# Copyright 2020 Red Hat, Inc.
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# All Rights Reserved.
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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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__metaclass__ = type
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import glob
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import json
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import os
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import shutil
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import yaml
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from ansible.module_utils.basic import AnsibleModule
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DOCUMENTATION = """
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---
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module: container_startup_config
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author:
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- "TripleO team"
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version_added: '2.9'
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short_description: Generate startup containers configs
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notes: []
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description:
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- It will generate container startup configs that will be consumed by the
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tripleo-container-manage role that is using podman_container module.
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requirements:
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- None
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options:
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config_base_dir:
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description:
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- Config base directory
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type: str
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default: '/var/lib/tripleo-config/container-startup-config'
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config_data:
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description:
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- Dictionary of container configs data
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type: dict
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required: true
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"""
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EXAMPLES = """
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- name: Generate startup container config for all the steps
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container_startup_config:
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config_data:
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step_1:
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haproxy:
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image: docker.io/haproxy
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memcached:
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image: docker.io/memcached
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step_2:
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mysql:
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image: docker.io/mysql
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"""
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class ContainerStartupManager:
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"""Class for container_startup_config module."""
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def __init__(self, module, results):
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super(ContainerStartupManager, self).__init__()
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self.module = module
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self.results = results
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# parse args
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args = self.module.params
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# Set parameters
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self.config_base_dir = args['config_base_dir']
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self.config_data = args['config_data']
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# Cleanup old configs created by previous releases
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self._cleanup_old_configs()
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# Create config_base_dir
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if not os.path.exists(self.config_base_dir):
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os.makedirs(self.config_base_dir)
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os.chmod(self.config_base_dir, 0o600)
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self.results['changed'] = True
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# Generate the container configs per step
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for step, step_config in self.config_data.items():
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step_dir = os.path.join(self.config_base_dir, step)
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# Note: it'll cleanup old configs before creating new ones.
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# TODO(emilien) add idempotency so we only remove the needed files
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self._recreate_dir(step_dir)
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for container, container_config in step_config.items():
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container_config_path = os.path.join(self.config_base_dir,
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step, container + '.json')
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self._create_config(container_config_path, container_config)
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self.module.exit_json(**self.results)
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def _recreate_dir(self, path):
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"""Creates a directory.
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:param path: string
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"""
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shutil.rmtree(path, ignore_errors=True)
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os.makedirs(path)
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def _create_config(self, path, config):
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"""Update a container config.
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:param path: string
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:param config: string
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"""
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with open(path, "wb") as config_file:
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config_file.write(json.dumps(config, indent=2).encode('utf-8'))
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os.chmod(path, 0o600)
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self.results['changed'] = True
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def _cleanup_old_configs(self):
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"""Cleanup old container configurations from previous releases.
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"""
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pattern = '*docker-container-startup-config*.json'
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old_configs = glob.glob(os.path.join('/var/lib/tripleo-config',
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pattern))
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for config in old_configs:
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os.remove(config)
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def main():
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module = AnsibleModule(
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argument_spec=yaml.safe_load(DOCUMENTATION)['options'],
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supports_check_mode=True,
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)
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results = dict(
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changed=False
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)
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ContainerStartupManager(module, results)
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if __name__ == '__main__':
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main()
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