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ara_read.py
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ara_read.py
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# Copyright (c) 2018 Red Hat, Inc.
#
# This file is part of ARA Records Ansible.
#
# ARA is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# ARA is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with ARA. If not, see <http://www.gnu.org/licenses/>.
from ansible.plugins.action import ActionBase
try:
from ara import models
from ara.webapp import create_app
from flask import current_app
HAS_ARA = True
except ImportError:
HAS_ARA = False
DOCUMENTATION = """
---
module: ara_read
short_description: Ansible module to read recorded persistent data with ARA.
version_added: "2.0"
author: "RDO Community <rdo-list@redhat.com>"
description:
- Ansible module to read recorded persistent data with ARA.
options:
playbook:
description:
- uuid of the playbook to read the key from
required: false
version_added: 0.13.2
key:
description:
- Name of the key to read from
required: true
requirements:
- "python >= 2.6"
- "ara >= 0.10.0"
"""
EXAMPLES = """
# Write data
- ara_record:
key: "foo"
value: "bar"
# Read data
- ara_read:
key: "foo"
register: foo
# Read data from a specific playbook
# (Retrieve playbook uuid's with 'ara playbook list')
- ara_read:
playbook: uuuu-iiii-dddd-0000
key: logs
register: logs
# Use data
- debug:
msg: "{{ item }}"
with_items:
- foo.key
- foo.value
- foo.type
- foo.playbook_id
"""
class ActionModule(ActionBase):
""" Read from recorded persistent data as key/value pairs in ARA """
TRANSFERS_FILES = False
VALID_ARGS = frozenset(('playbook', 'key'))
def get_key(self, playbook_id, key):
try:
data = (models.Data.query
.filter_by(key=key)
.filter_by(playbook_id=playbook_id)
.one())
except models.NoResultFound:
return False
return data
def run(self, tmp=None, task_vars=None):
if task_vars is None:
task_vars = dict()
if not HAS_ARA:
result = {
'failed': True,
'msg': 'ARA is required to run this module.'
}
return result
for arg in self._task.args:
if arg not in self.VALID_ARGS:
result = {
'failed': True,
'msg': '{0} is not a valid option.'.format(arg)
}
return result
result = super(ActionModule, self).run(tmp, task_vars)
playbook_id = self._task.args.get('playbook', None)
key = self._task.args.get('key', None)
required = ['key']
for parameter in required:
if not self._task.args.get(parameter):
result['failed'] = True
result['msg'] = '{0} parameter is required'.format(parameter)
return result
app = create_app()
if not current_app:
context = app.app_context()
context.push()
if playbook_id is None:
# Retrieve playbook_id from the cached context
playbook_id = current_app._cache['playbook']
try:
data = self.get_key(playbook_id, key)
if data:
result['key'] = data.key
result['value'] = data.value
result['type'] = data.type
result['playbook_id'] = data.playbook_id
msg = 'Sucessfully read data for the key {0}'.format(data.key)
result['msg'] = msg
# TODO: Do a better job for handling exception
except Exception as e:
result['key'] = None
result['value'] = None
result['type'] = None
result['playbook_id'] = None
result['failed'] = True
msg = 'Could not read data for key {0}: {1}'.format(key, str(e))
result['msg'] = msg
return result