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#!/usr/bin/python
# -*- coding: utf-8 -*-
# This file is part of Ansible
#
# Ansible 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.
#
# Ansible 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 Ansible. If not, see <http://www.gnu.org/licenses/>.
ANSIBLE_METADATA = {'status': ['preview'],
'supported_by': 'community',
'version': '1.0'}
DOCUMENTATION = """
---
module: vertica_configuration
version_added: '2.0'
short_description: Updates Vertica configuration parameters.
description:
- Updates Vertica configuration parameters.
options:
name:
description:
- Name of the parameter to update.
required: true
value:
description:
- Value of the parameter to be set.
required: true
db:
description:
- Name of the Vertica database.
required: false
default: null
cluster:
description:
- Name of the Vertica cluster.
required: false
default: localhost
port:
description:
- Vertica cluster port to connect to.
required: false
default: 5433
login_user:
description:
- The username used to authenticate with.
required: false
default: dbadmin
login_password:
description:
- The password used to authenticate with.
required: false
default: null
notes:
- The default authentication assumes that you are either logging in as or sudo'ing
to the C(dbadmin) account on the host.
- This module uses C(pyodbc), a Python ODBC database adapter. You must ensure
that C(unixODBC) and C(pyodbc) is installed on the host and properly configured.
- Configuring C(unixODBC) for Vertica requires C(Driver = /opt/vertica/lib64/libverticaodbc.so)
to be added to the C(Vertica) section of either C(/etc/odbcinst.ini) or C($HOME/.odbcinst.ini)
and both C(ErrorMessagesPath = /opt/vertica/lib64) and C(DriverManagerEncoding = UTF-16)
to be added to the C(Driver) section of either C(/etc/vertica.ini) or C($HOME/.vertica.ini).
requirements: [ 'unixODBC', 'pyodbc' ]
author: "Dariusz Owczarek (@dareko)"
"""
EXAMPLES = """
- name: updating load_balance_policy
vertica_configuration: name=failovertostandbyafter value='8 hours'
"""
try:
import pyodbc
except ImportError:
pyodbc_found = False
else:
pyodbc_found = True
from ansible.module_utils.basic import AnsibleModule
from ansible.module_utils.pycompat24 import get_exception
class NotSupportedError(Exception):
pass
class CannotDropError(Exception):
pass
# module specific functions
def get_configuration_facts(cursor, parameter_name=''):
facts = {}
cursor.execute("""
select c.parameter_name, c.current_value, c.default_value
from configuration_parameters c
where c.node_name = 'ALL'
and (? = '' or c.parameter_name ilike ?)
""", parameter_name, parameter_name)
while True:
rows = cursor.fetchmany(100)
if not rows:
break
for row in rows:
facts[row.parameter_name.lower()] = {
'parameter_name': row.parameter_name,
'current_value': row.current_value,
'default_value': row.default_value}
return facts
def check(configuration_facts, parameter_name, current_value):
parameter_key = parameter_name.lower()
if current_value and current_value.lower() != configuration_facts[parameter_key]['current_value'].lower():
return False
return True
def present(configuration_facts, cursor, parameter_name, current_value):
parameter_key = parameter_name.lower()
changed = False
if current_value and current_value.lower() != configuration_facts[parameter_key]['current_value'].lower():
cursor.execute("select set_config_parameter('{0}', '{1}')".format(parameter_name, current_value))
changed = True
if changed:
configuration_facts.update(get_configuration_facts(cursor, parameter_name))
return changed
# module logic
def main():
module = AnsibleModule(
argument_spec=dict(
parameter=dict(required=True, aliases=['name']),
value=dict(default=None),
db=dict(default=None),
cluster=dict(default='localhost'),
port=dict(default='5433'),
login_user=dict(default='dbadmin'),
login_password=dict(default=None),
), supports_check_mode = True)
if not pyodbc_found:
module.fail_json(msg="The python pyodbc module is required.")
parameter_name = module.params['parameter']
current_value = module.params['value']
db = ''
if module.params['db']:
db = module.params['db']
changed = False
try:
dsn = (
"Driver=Vertica;"
"Server={0};"
"Port={1};"
"Database={2};"
"User={3};"
"Password={4};"
"ConnectionLoadBalance={5}"
).format(module.params['cluster'], module.params['port'], db,
module.params['login_user'], module.params['login_password'], 'true')
db_conn = pyodbc.connect(dsn, autocommit=True)
cursor = db_conn.cursor()
except Exception:
e = get_exception()
module.fail_json(msg="Unable to connect to database: {0}.".format(e))
try:
configuration_facts = get_configuration_facts(cursor)
if module.check_mode:
changed = not check(configuration_facts, parameter_name, current_value)
else:
try:
changed = present(configuration_facts, cursor, parameter_name, current_value)
except pyodbc.Error:
e = get_exception()
module.fail_json(msg=str(e))
except NotSupportedError:
e = get_exception()
module.fail_json(msg=str(e), ansible_facts={'vertica_configuration': configuration_facts})
except CannotDropError:
e = get_exception()
module.fail_json(msg=str(e), ansible_facts={'vertica_configuration': configuration_facts})
except SystemExit:
# avoid catching this on python 2.4
raise
except Exception:
e = get_exception()
module.fail_json(msg=e)
module.exit_json(changed=changed, parameter=parameter_name, ansible_facts={'vertica_configuration': configuration_facts})
if __name__ == '__main__':
main()
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