From 1b8c4ce69723394344b742b7de357badb21e1c6e Mon Sep 17 00:00:00 2001
From: Jan Dittberner <jan@dittberner.info>
Date: Thu, 1 Jan 2015 22:17:41 +0100
Subject: [PATCH] add task implementations

---
 gvamysql/mysqltasks/tasks.py | 68 ++++++++++++++++++++++++++++++++++--
 1 file changed, 66 insertions(+), 2 deletions(-)

diff --git a/gvamysql/mysqltasks/tasks.py b/gvamysql/mysqltasks/tasks.py
index 39ccf53..1a3ca11 100644
--- a/gvamysql/mysqltasks/tasks.py
+++ b/gvamysql/mysqltasks/tasks.py
@@ -7,10 +7,21 @@ from __future__ import absolute_import, unicode_literals
 from celery import shared_task
 from celery.utils.log import get_task_logger
 
+from gvamysql import settings
+from MySQLdb import connect
+
 
 _LOGGER = get_task_logger(__name__)
 
 
+def _get_connection():
+    return connect(
+        host=settings.GVAMYSQL_DBADMIN_HOST,
+        port=settings.GVAMYSQL_DBADMIN_PORT,
+        user=settings.GVAMYSQL_DBADMIN_USER,
+        password=settings.GVAMYSQL_DBADMIN_PASSWORD)
+
+
 @shared_task
 def create_mysql_user(username, password):
     """
@@ -22,6 +33,16 @@ def create_mysql_user(username, password):
     :rtype: str
 
     """
+    conn = _get_connection()
+    curs = conn.cursor()
+    curs.execute(
+        """
+        CREATE USER %(username)s@'%' IDENTIFIED BY %(password)s
+        """,
+        {'username': username, 'password': password}
+    )
+    conn.commit()
+    return username
 
 
 @shared_task
@@ -35,6 +56,15 @@ def set_mysql_userpassword(username, password):
     :rtype: boolean
 
     """
+    conn = _get_connection()
+    curs = conn.cursor()
+    curs.execute(
+        """
+        SET PASSWORD FOR %(username)s = PASSWORD(%(password)s)
+        """,
+        {'username': username, 'password': password})
+    conn.commit()
+    return True
 
 
 @shared_task
@@ -47,6 +77,15 @@ def delete_mysql_user(username):
     :rtype: boolean
 
     """
+    conn = _get_connection()
+    curs = conn.cursor()
+    curs.execute(
+        """
+        DROP USER %(username)s@'%'
+        """,
+        {'username': username})
+    conn.commit()
+    return True
 
 
 @shared_task
@@ -60,15 +99,40 @@ def create_mysql_database(dbname, username):
     :rtype: str
 
     """
+    conn = _get_connection()
+    curs = conn.cursor()
+    curs.execute(
+        """
+        CREATE DATABASE %(dbname)s CHARACTER SET utf8 COLLATE utf8_german_ci
+        """,
+        {'dbname': dbname})
+    curs.execute(
+        """
+        GRANT ALL PRIVILEGES ON %(dbname)s.* TO %(username)s@'%'
+        """,
+        {'dbname': dbname, 'username': username})
+    conn.commit()
+    return dbname
 
 
 @shared_task
-def delete_mysql_database(dbname):
+def delete_mysql_database(dbname, username):
     """
-    This task deletes an existing MySQL database.
+    This task deletes an existing MySQL database and revokes privileges of the
+    given user on that database.
 
     :param str dbname: database name
+    :param str username: the user name of an existing MySQL user
     :return: True if the database has been deleted, False otherwise
     :rtype: boolean
 
     """
+    conn = _get_connection()
+    curs = conn.cursor()
+    curs.execute(
+        """
+        REVOKE ALL PRIVILEGES ON %(dbname)s.* FROM %(username)s@'%'
+        """,
+        {'dbname': dbname, 'username': username})
+    conn.commit()
+    return True