ansible/library/mysql_db

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#!/usr/bin/python
# -*- coding: utf-8 -*-
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# (c) 2012, Mark Theunissen <mark.theunissen@gmail.com>
# Sponsored by Four Kitchens http://fourkitchens.com.
#
# 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/>.
import ConfigParser
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try:
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import MySQLdb
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except ImportError:
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mysqldb_found = False
else:
mysqldb_found = True
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# ===========================================
# MySQL module specific support methods.
#
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def db_exists(cursor, db):
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res = cursor.execute("SHOW DATABASES LIKE %s", (db,))
return bool(res)
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def db_delete(cursor, db):
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query = "DROP DATABASE %s" % db
cursor.execute(query)
return True
def db_create(cursor, db, encoding, collation):
if encoding:
encoding = " CHARACTER SET %s" % encoding
if collation:
collation = " COLLATE %s" % collation
query = "CREATE DATABASE %s%s%s" % (db, encoding, collation)
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res = cursor.execute(query)
return True
def load_mycnf():
config = ConfigParser.RawConfigParser()
mycnf = os.path.expanduser('~/.my.cnf')
if not os.path.exists(mycnf):
return False
try:
config.readfp(open(mycnf))
creds = dict(user=config.get('client', 'user'),passwd=config.get('client', 'pass'))
except (ConfigParser.NoOptionError, IOError):
return False
return creds
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# ===========================================
# Module execution.
#
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def main():
module = AnsibleModule(
argument_spec = dict(
login_user=dict(default=None),
login_password=dict(default=None),
login_host=dict(default="localhost"),
login_unix_socket=dict(default=None),
db=dict(required=True, aliases=['name']),
encoding=dict(default=""),
collation=dict(default=""),
state=dict(default="present", choices=["absent", "present"]),
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)
)
if not mysqldb_found:
module.fail_json(msg="the python mysqldb module is required")
db = module.params["db"]
encoding = module.params["encoding"]
collation = module.params["collation"]
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state = module.params["state"]
# Either the caller passes both a username and password with which to connect to
# mysql, or they pass neither and allow this module to read the credentials from
# ~/.my.cnf.
login_password = module.params["login_password"]
login_user = module.params["login_user"]
if login_user is None and login_password is None:
mycnf_creds = load_mycnf()
if mycnf_creds is False:
login_user = "root"
login_password = ""
else:
login_user = mycnf_creds["user"]
login_password = mycnf_creds["passwd"]
elif login_password is None or login_user is None:
module.fail_json(msg="when supplying login arguments, both login_user and login_password must be provided")
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try:
if module.params["login_unix_socket"] != None:
db_connection = MySQLdb.connect(host=module.params["login_host"], unix_socket=module.params["login_unix_socket"], user=login_user, passwd=login_password, db="mysql")
else:
db_connection = MySQLdb.connect(host=module.params["login_host"], user=login_user, passwd=login_password, db="mysql")
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cursor = db_connection.cursor()
except Exception as e:
module.fail_json(msg="unable to connect, check login_user and login_password are correct, or alternatively check ~/.my.cnf contains credentials")
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changed = False
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if db_exists(cursor, db):
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if state == "absent":
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changed = db_delete(cursor, db)
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else:
if state == "present":
changed = db_create(cursor, db, encoding, collation)
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module.exit_json(changed=changed, db=db)
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# this is magic, see lib/ansible/module_common.py
#<<INCLUDE_ANSIBLE_MODULE_COMMON>>
main()