Current File : //lib/python2.7/site-packages/salt/modules/data.py
# -*- coding: utf-8 -*-
'''
Manage a local persistent data structure that can hold any arbitrary data
specific to the minion
'''
from __future__ import absolute_import, print_function, unicode_literals
# Import python libs
import os
import ast
import logging
# Import salt libs
import salt.utils.files
import salt.payload
# Import 3rd-party lib
from salt.ext import six
log = logging.getLogger(__name__)
def clear():
'''
Clear out all of the data in the minion datastore, this function is
destructive!
CLI Example:
.. code-block:: bash
salt '*' data.clear
'''
try:
os.remove(os.path.join(__opts__['cachedir'], 'datastore'))
except (IOError, OSError):
pass
return True
def load():
'''
Return all of the data in the minion datastore
CLI Example:
.. code-block:: bash
salt '*' data.load
'''
serial = salt.payload.Serial(__opts__)
try:
datastore_path = os.path.join(__opts__['cachedir'], 'datastore')
with salt.utils.files.fopen(datastore_path, 'rb') as rfh:
return serial.loads(rfh.read())
except (IOError, OSError, NameError):
return {}
def dump(new_data):
'''
Replace the entire datastore with a passed data structure
CLI Example:
.. code-block:: bash
salt '*' data.dump '{'eggs': 'spam'}'
'''
if not isinstance(new_data, dict):
if isinstance(ast.literal_eval(new_data), dict):
new_data = ast.literal_eval(new_data)
else:
return False
try:
datastore_path = os.path.join(__opts__['cachedir'], 'datastore')
with salt.utils.files.fopen(datastore_path, 'w+b') as fn_:
serial = salt.payload.Serial(__opts__)
serial.dump(new_data, fn_)
return True
except (IOError, OSError, NameError):
return False
def update(key, value):
'''
Update a key with a value in the minion datastore
CLI Example:
.. code-block:: bash
salt '*' data.update <key> <value>
'''
store = load()
store[key] = value
dump(store)
return True
def cas(key, value, old_value):
'''
Check and set a value in the minion datastore
CLI Example:
.. code-block:: bash
salt '*' data.cas <key> <value> <old_value>
'''
store = load()
if key not in store:
return False
if store[key] != old_value:
return False
store[key] = value
dump(store)
return True
def pop(key, default=None):
'''
Pop (return & delete) a value from the minion datastore
.. versionadded:: 2015.5.2
CLI Example:
.. code-block:: bash
salt '*' data.pop <key> "there was no val"
'''
store = load()
val = store.pop(key, default)
dump(store)
return val
def get(key, default=None):
'''
Get a (list of) value(s) from the minion datastore
.. versionadded:: 2015.8.0
CLI Example:
.. code-block:: bash
salt '*' data.get key
salt '*' data.get '["key1", "key2"]'
'''
store = load()
if isinstance(key, six.string_types):
return store.get(key, default)
elif default is None:
return [store[k] for k in key if k in store]
else:
return [store.get(k, default) for k in key]
def keys():
'''
Get all keys from the minion datastore
.. versionadded:: 2015.8.0
CLI Example:
.. code-block:: bash
salt '*' data.keys
'''
store = load()
return store.keys()
def values():
'''
Get values from the minion datastore
.. versionadded:: 2015.8.0
CLI Example:
.. code-block:: bash
salt '*' data.values
'''
store = load()
return store.values()
def items():
'''
Get items from the minion datastore
.. versionadded:: 2015.8.0
CLI Example:
.. code-block:: bash
salt '*' data.items
'''
store = load()
return store.items()
def has_key(key):
'''
Check if key is in the minion datastore
.. versionadded:: 2015.8.0
CLI Example:
.. code-block:: bash
salt '*' data.has_key <mykey>
'''
store = load()
return key in store
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