Merge pull request #1949 from elliotttf/devel

Adding mongodb_user module.

library/mongodb_user

+#!/usr/bin/python
+
+# (c) 2012, Elliott Foster <elliott@fourkitchens.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/>.
+
+DOCUMENTATION = '''
+---
+module: mongodb_user
+short_description: Adds or removes a user from a MongoDB database.
+description:
+    - Adds or removes a user from a MongoDB database.
+version_added: "0.X"
+options:
+    login_user:
+        description:
+            - The username used to authenticate with
+        required: false
+        default: null
+    login_password:
+        description:
+            - The password used to authenticate with
+        required: false
+        default: null
+    login_host:
+        description:
+            - The host running the database
+        required: false
+        default: localhost
+    login_port
+        description:
+            - The port to connect to
+        required: false
+        default: 27017
+    database:
+        description:
+            - The name of the database to add/remove the user from
+        required: true
+    user:
+        description:
+            - The name of the user to add or remove
+        required: true
+        default: null
+    password:
+        description:
+            - The password to use for the user
+        required: false
+        default: null
+    state:
+        state:
+        description:
+            - The database user state
+        required: false
+        default: present
+        choices: [ "present", "absent" ]
+examples:
+    - code: "mongodb_user: database=burgers name=bob password=12345 state=present"
+      description: Create 'burgers' database user with name 'bob' and password '12345'.
+    - code: "mongodb_user: database=burgers name=bob state=absent"
+      description: Delete 'burgers' database user with name 'bob'.
+  notes:
+    - Requires the pymongo Python package on teh remote host, version 2.4.2+. This
+      can be installed using pip. @see http://api.mongodb.org/python/current/installation.html
+requirements: [ "pymongo" ]
+author: Elliott Foster
+'''
+
+import ConfigParser
+try:
+    from pymongo import MongoClient
+    from pymongo.errors import ConnectionFailure
+    from pymongo.errors import OperationFailure
+except ImportError:
+    pymongo_found = False
+else:
+    pymongo_found = True
+
+# =========================================
+# MongoDB module specific support methods.
+#
+
+def user_add(client, db_name, user, password):
+    try:
+        db = client[db_name]
+        db.add_user(user, password)
+    except OperationFailure:
+        return False
+
+
+    return True
+
+def user_remove(client, db_name, user):
+    try:
+        db = client[db_name]
+        db.remove_user(user)
+    except OperationFailure:
+        return False
+
+    return True
+
+def load_mongocnf():
+    config = ConfigParser.RawConfigParser()
+    mongocnf = os.path.expanduser('~/.mongodb.cnf')
+    if not os.path.exists(mongocnf):
+      return False
+
+    try:
+        config.readfp(open(mongocnf))
+        creds = dict(
+          user=config.get('client', 'user'),
+          password=config.get('client', 'pass')
+        )
+    except (ConfigParser.NoOptionError, IOError):
+        return False
+
+    return creds
+
+# =========================================
+# Module execution.
+#
+
+def main():
+    module = AnsibleModule(
+        argument_spec = dict(
+            login_user=dict(default=None),
+            login_password=dict(default=None),
+            login_host=dict(default='localhost'),
+            login_port=dict(default='27017'),
+            database=dict(required=True, aliases=['db']),
+            user=dict(required=True, aliases=['name']),
+            password=dict(aliases=['pass']),
+            state=dict(default='present', choices=['absent', 'present']),
+        )
+    )
+
+    if not pymongo_found:
+        module.fail_json(msg='the python pymongo module is required')
+
+    login_user = module.params['login_user']
+    login_password = module.params['login_password']
+    login_host = module.params['login_host']
+    login_port = module.params['login_port']
+    db_name = module.params['database']
+    user = module.params['user']
+    password = module.params['password']
+    state = module.params['state']
+
+    try:
+        client = MongoClient(login_host, int(login_port))
+        if login_user is None and login_password is None:
+            mongocnf_creds = load_mongocnf()
+            if mongocnf_creds is not False:
+                login_user = mongocnf_creds['user']
+                login_password = mongocnf_creds['password']
+        elif login_password is None and login_user is not None:
+            module.fail_json(msg='when supplying login arguments, both login_user and login_password must be provided')
+
+        if login_user is not None and login_password is not None:
+            client.admin.authenticate(login_user, login_password)
+
+    except ConnectionFailure as e:
+        module.fail_json(msg='unable to connect to database, check login_user and login_password are correct')
+
+    if state == 'present':
+        if password is None:
+            module.fail_json(msg='password parameter required when adding a user')
+        if user_add(client, db_name, user, password) is not True:
+            module.fail_json(msg='Unable to add or update user, check login_user and login_password are correct and that this user has access to the admin collection')
+    elif state == 'absent':
+        if user_remove(client, db_name, user) is not True:
+            module.fail_json(msg='Unable to remove user, check login_user and login_password are correct and that this user has access to the admin collection')
+
+    module.exit_json(changed=True, user=user)
+
+# this is magic, see lib/ansible/module_common.py
+#<<INCLUDE_ANSIBLE_MODULE_COMMON>>
+main()