freezer-dr/osha/yaml_parser.py

60 lines
1.8 KiB
Python

# __author__ = 'saad'
import yaml
import os
class YamlParser(object):
_INDEX = 'servers'
def __init__(self, yml_file, index='servers'):
"""
Provide Yaml file to parse it and process data
:param yml_file: path to yaml file
:param index: the key in the .yml file to get all servers listed under
this key. the default 'is servers'
"""
self.file = yml_file
self._INDEX = index
self.data = self.parse()
def parse(self):
if not self.file:
raise "No file specified !"
if not os.path.exists(self.file) or not os.path.isfile(self.file):
raise "File desn't exists"
stream = file(self.file, 'r')
data = yaml.load(stream)
return data
def find_server_by_ip(self, ip):
"""
get server information ilo username, password and ip
:param ip: mgmt ip address of the server, this should be the same like
the ip in the .yml file
:return: dict contains server information
"""
return self.find_server('ip-addr', ip)
def find_server_by_hostname(self, hostname):
"""
get server information ilo username, password and ip
:param hostname: hostname matches one of the ones in the .yml file
:return: dict contains the server information
"""
return self.find_server(key='hostname', value=hostname)
def find_server(self, key, value):
"""
Generic function to query the .yml file to get server information by any
key.
:param key:
:param value:
:return:
"""
for server in self.data.get(self._INDEX):
if server.get(key) == value:
return server
return None