85 lines
2.5 KiB
Python
85 lines
2.5 KiB
Python
# (C) Copyright 2015 Hewlett Packard Enterprise Development Company LP
|
|
|
|
"""Classes for detection of running resources to be monitored.
|
|
|
|
Detection classes should be platform independent
|
|
"""
|
|
import ast
|
|
import logging
|
|
import sys
|
|
|
|
log = logging.getLogger(__name__)
|
|
|
|
|
|
class Plugin(object):
|
|
"""Abstract class implemented by the monasca-agent plugin detection classes. """
|
|
|
|
def __init__(self, template_dir, overwrite=True, args=None):
|
|
self.available = False
|
|
self.template_dir = template_dir
|
|
self.dependencies = ()
|
|
self.overwrite = overwrite
|
|
if args is not None and isinstance(args, str):
|
|
try:
|
|
# Turn 'hostname=host type=ping' to dictionary {'hostname': 'host', 'type': 'ping'}
|
|
self.args = dict([a.split('=') for a in args.split()])
|
|
except Exception:
|
|
log.exception('Error parsing detection arguments')
|
|
sys.exit(1)
|
|
elif isinstance(args, dict):
|
|
self.args = args
|
|
else:
|
|
self.args = None
|
|
self._detect()
|
|
|
|
def _detect(self):
|
|
"""Run detection, set self.available True if the service is detected.
|
|
|
|
"""
|
|
raise NotImplementedError
|
|
|
|
def build_config(self):
|
|
"""Build the config as a Plugins object and return.
|
|
|
|
"""
|
|
raise NotImplementedError
|
|
|
|
def build_config_with_name(self):
|
|
"""Builds the config and then adds a field 'built_by' to each instance in the config.
|
|
built_by is set to the plugin name
|
|
:return: An agent_config.Plugins object
|
|
"""
|
|
conf = self.build_config()
|
|
if conf is None:
|
|
return None
|
|
for plugin_type in conf.itervalues():
|
|
for inst in plugin_type['instances']:
|
|
inst['built_by'] = self.__class__.__name__
|
|
return conf
|
|
|
|
def dependencies_installed(self):
|
|
"""Return True if dependencies are installed.
|
|
|
|
"""
|
|
raise NotImplementedError
|
|
|
|
@staticmethod
|
|
def literal_eval(testval):
|
|
"""Return a literal boolean value if applicable
|
|
|
|
"""
|
|
if 'false' in str(testval).lower() or 'true' in str(testval).lower():
|
|
return ast.literal_eval(str(testval).capitalize())
|
|
else:
|
|
return testval
|
|
|
|
@property
|
|
def name(self):
|
|
"""Return _name if set otherwise the class name.
|
|
|
|
"""
|
|
if '_name' in self.__dict__:
|
|
return self._name
|
|
else:
|
|
return self.__class__.__name__
|