Current File : //lib/python2.7/site-packages/salt/engines/http_logstash.py
# -*- coding: utf-8 -*-
'''
HTTP Logstash engine
==========================
An engine that reads messages from the salt event bus and pushes
them onto a logstash endpoint via HTTP requests.
.. versionchanged:: 2018.3.0
.. note::
By default, this engine take everything from the Salt bus and exports into
Logstash.
For a better selection of the events that you want to publish, you can use
the ``tags`` and ``funs`` options.
:configuration: Example configuration
.. code-block:: yaml
engines:
- http_logstash:
url: http://blabla.com/salt-stuff
tags:
- salt/job/*/new
- salt/job/*/ret/*
funs:
- probes.results
- bgp.config
'''
from __future__ import absolute_import, print_function, unicode_literals
# Import python lib
import fnmatch
# Import salt libs
import salt.utils.http
import salt.utils.event
import salt.utils.json
# ----------------------------------------------------------------------------------------------------------------------
# module properties
# ----------------------------------------------------------------------------------------------------------------------
_HEADERS = {'Content-Type': 'application/json'}
# ----------------------------------------------------------------------------------------------------------------------
# module properties
# ----------------------------------------------------------------------------------------------------------------------
# ----------------------------------------------------------------------------------------------------------------------
# helpers
# ----------------------------------------------------------------------------------------------------------------------
def _logstash(url, data):
'''
Issues HTTP queries to the logstash server.
'''
result = salt.utils.http.query(
url,
'POST',
header_dict=_HEADERS,
data=salt.utils.json.dumps(data),
decode=True,
status=True,
opts=__opts__
)
return result
# ----------------------------------------------------------------------------------------------------------------------
# main
# ----------------------------------------------------------------------------------------------------------------------
def start(url, funs=None, tags=None):
'''
Listen to salt events and forward them to logstash.
url
The Logstash endpoint.
funs: ``None``
A list of functions to be compared against, looking into the ``fun``
field from the event data. This option helps to select the events
generated by one or more functions.
If an event does not have the ``fun`` field in the data section, it
will be published. For a better selection, consider using the ``tags``
option.
By default, this option accepts any event to be submitted to Logstash.
tags: ``None``
A list of pattern to compare the event tag against.
By default, this option accepts any event to be submitted to Logstash.
'''
if __opts__.get('id').endswith('_master'):
instance = 'master'
else:
instance = 'minion'
event_bus = salt.utils.event.get_event(instance,
sock_dir=__opts__['sock_dir'],
transport=__opts__['transport'],
opts=__opts__)
while True:
event = event_bus.get_event(full=True)
if event:
publish = True
if tags and isinstance(tags, list):
found_match = False
for tag in tags:
if fnmatch.fnmatch(event['tag'], tag):
found_match = True
publish = found_match
if funs and 'fun' in event['data']:
if not event['data']['fun'] in funs:
publish = False
if publish:
_logstash(url, event['data'])
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