191 lines
5.5 KiB
Python
191 lines
5.5 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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from __future__ import absolute_import, division, print_function
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__metaclass__ = type
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from ansible.module_utils.basic import AnsibleModule
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from ansible.module_utils.parsing.convert_bool import boolean
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import glob
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import json
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import os
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import yaml
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ANSIBLE_METADATA = {
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'metadata_version': '1.1',
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'status': ['preview'],
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'supported_by': 'community'
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}
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DOCUMENTATION = """
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---
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module: container_config_data
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author:
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- Emilien Macchi <emilien@redhat.com>
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version_added: '2.8'
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short_description: Generates a dictionary which contains all container configs
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notes: []
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description:
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- This module reads container configs in JSON files and generate a dictionary
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which later will be used to manage the containers.
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options:
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config_path:
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description:
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- The path of a directory or a file where the JSON files are.
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This parameter is required.
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required: True
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type: str
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config_pattern:
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description:
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- Search pattern to find JSON files.
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default: '*.json'
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required: False
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type: str
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config_overrides:
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description:
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- Allows to override any container configuration which will take
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precedence over the JSON files.
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default: {}
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required: False
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type: dict
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debug:
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description:
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- Whether or not debug is enabled.
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default: False
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required: False
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type: bool
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"""
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EXAMPLES = """
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- name: Generate containers configs data
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container_config_data:
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config_path: /var/lib/tripleo-config/container-startup-config/step_1
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- name: Generate containers configs data for HAproxy and override image
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container_config_data:
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config_path: /var/lib/tripleo-config/container-startup-config/step_1
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config_pattern: 'haproxy.json'
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config_overrides:
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haproxy:
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image: my-registry.io/tripleo/haproxy:mytag
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"""
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RETURN = """
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configs:
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description:
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- Dictionary with container configs ready to be consumed by
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tripleo_container_manage role.
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returned: always
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type: dict
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"""
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class ContainerConfigDataManager(object):
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"""Notes about this module.
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It will generates a dictionary which contains all container configs,
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later consumed by tripleo_container_manage role.
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"""
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def __init__(self, module, results):
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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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config_path = args['config_path']
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config_pattern = args['config_pattern']
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config_overrides = args['config_overrides']
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self.debug = args['debug']
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# Generate dict from JSON files that match search pattern
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if os.path.exists(config_path):
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matched_configs = glob.glob(os.path.join(config_path,
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config_pattern))
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else:
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self.module.fail_json(
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msg='{} does not exists'.format(config_path))
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config_dict = {}
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for mc in matched_configs:
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name = os.path.splitext(os.path.basename(mc))[0]
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config = json.loads(self._slurp(mc))
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if self.debug:
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self.module.debug('Config found for {}: {}'.format(name,
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config))
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config_dict.update({name: config})
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# Merge the config dict with given overrides
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self.results['configs'] = self._merge_with_overrides(config_dict,
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config_overrides)
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# Returns data
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self.module.exit_json(**self.results)
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def _merge_with_overrides(self, config, merge_with=None):
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"""Merge config with a given dict of overrides.
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:param config: dictionary of configs
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:param merge_with: dictionary of overrides
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:return: dict
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"""
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merged_dict = config
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if merge_with is None:
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merge_with = {}
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for k in merge_with.keys():
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if k in config:
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for mk, mv in merge_with[k].items():
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if self.debug:
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self.module.debug('Override found for {}: {} will be '
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'set to {}'.format(k, mk, mv))
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merged_dict[k][mk] = mv
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break
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return merged_dict
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def _slurp(self, path):
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"""Slurps a file and return its content.
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:param path: string
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:returns: string
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"""
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if os.path.exists(path):
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f = open(path, 'r')
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return f.read()
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else:
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self.module.warn('{} was not found.'.format(path))
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return ''
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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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configs={}
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)
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ContainerConfigDataManager(module, results)
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if __name__ == '__main__':
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main()
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