Last active
August 29, 2015 13:57
-
-
Save mgwilliams/9824202 to your computer and use it in GitHub Desktop.
SaltmModule to store key/value in sqlite
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| # -*- coding: utf-8 -*- | |
| from __future__ import absolute_import | |
| # Import python libs | |
| import logging | |
| import codecs | |
| # Import third party libs | |
| try: | |
| import msgpack | |
| import sqlite3 | |
| IMPORTS_OK = True | |
| except ImportError: | |
| IMPORTS_OK = False | |
| log = logging.getLogger(__name__) | |
| def __virtual__(): | |
| ''' | |
| Only load this module if sqlite3 is installed | |
| ''' | |
| if IMPORTS_OK: | |
| return True | |
| else: | |
| return False | |
| def _connect(bucket): | |
| ''' | |
| Returns a sqlite3 cursor. | |
| ''' | |
| sqlitedb = __salt__['config.option']('saltdb.sqlitedb', '/srv/saltdb/db') | |
| db = sqlite3.connect(sqlitedb) | |
| db.text_factory = str | |
| cursor = db.cursor() | |
| try: | |
| q = 'CREATE TABLE {0} (key string not null unique, value text)'.format( | |
| _escape(bucket)) | |
| cursor.execute(q) | |
| except sqlite3.OperationalError: | |
| pass | |
| q = 'CREATE UNIQUE INDEX IF NOT EXISTS {0}_key_idx ON {0} (key)'.format( | |
| _escape(bucket)) | |
| cursor.execute(q) | |
| return db, cursor | |
| def _escape(s, errors="strict"): | |
| encodable = s.encode("utf-8", errors).decode("utf-8") | |
| nul_index = encodable.find("\x00") | |
| if nul_index >= 0: | |
| error = UnicodeEncodeError("NUL-terminated utf-8", encodable, | |
| nul_index, nul_index + 1, "NUL not allowed") | |
| error_handler = codecs.lookup_error(errors) | |
| replacement, _ = error_handler(error) | |
| encodable = encodable.replace("\x00", replacement) | |
| return encodable.replace("\"", "\"\"") | |
| def update(key, value, bucket='salt'): | |
| ''' | |
| Update or set the value for a key | |
| CLI Example: | |
| .. code-block:: bash | |
| salt '*' kvsqlite.update key value [bucket=bucket_name] | |
| ''' | |
| db, cursor = _connect(bucket) | |
| value = msgpack.packs(value) | |
| cursor.execute('INSERT OR REPLACE INTO {0} VALUES (?, ?)'.format( | |
| _escape(bucket)), (key, value)) | |
| db.commit() | |
| cursor.close() | |
| db.close() | |
| return True | |
| def getval(key, default=None, bucket='salt'): | |
| db, cursor = _connect(bucket) | |
| query = 'SELECT value FROM {0} WHERE key=?'.format(_escape(bucket)) | |
| res = cursor.execute(query, (key,)).fetchone() | |
| if res: | |
| ret = msgpack.loads(res[0]) | |
| else: | |
| ret = None | |
| cursor.close() | |
| db.close() | |
| return ret |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment