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#!/usr/bin/env python |
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import json |
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import requests |
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import sys |
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from requests.auth import HTTPBasicAuth |
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import ast |
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# from [email protected]:mward29/python-k8sclient.git |
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from st2reactor.sensor.base import Sensor |
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11
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class ThirdPartyResource(Sensor): |
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def __init__(self, sensor_service, config=None): |
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super(ThirdPartyResource, self).__init__(sensor_service=sensor_service, |
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config=config) |
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self._log = self._sensor_service.get_logger(__name__) |
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self.TRIGGER_REF = 'kubernetes.thirdpartyobject' |
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self.client = None |
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def setup(self): |
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try: |
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extension = self._config['extension_url'] |
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KUBERNETES_API_URL = self._config['kubernetes_api_url'] + extension |
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user = self._config['user'] |
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password = self._config['password'] |
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verify = self._config['verify'] |
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except KeyError: |
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self._log.exception('Configuration file does not contain required fields.') |
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raise |
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self._log.debug('Connecting to Kubernetes endpoint %s via api_client.' % |
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KUBERNETES_API_URL) |
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self.client = requests.get(KUBERNETES_API_URL, auth=HTTPBasicAuth(user, password), |
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verify=verify, stream=True) |
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def run(self): |
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self._log.debug('Watch Kubernetes for thirdpartyresource information') |
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r = self.client |
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lines = r.iter_lines() |
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# Save the first line for later or just skip it |
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# first_line = next(lines) |
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for line in lines: |
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try: |
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trigger_payload = self._get_trigger_payload_from_line(line) |
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except: |
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msg = ('Failed generating trigger payload from line %s. Aborting sensor!!!' % |
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line) |
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self._log.exception(msg) |
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sys.exit(1) |
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else: |
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self._log.debug('Triggering Dispatch Now') |
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self._sensor_service.dispatch(trigger=self.TRIGGER_REF, payload=trigger_payload) |
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def _get_trigger_payload_from_line(self, line): |
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k8s_object = self._fix_utf8_enconding_and_eval(line) |
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self._log.debug('Incoming k8s object (from API response): %s', k8s_object) |
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payload = self._k8s_object_to_st2_trigger(k8s_object) |
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return payload |
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def _fix_utf8_enconding_and_eval(self, line): |
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# need to perform a json dump due to uft8 error prior to performing a json.load |
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io = json.dumps(line) |
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n = json.loads(io) |
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line = ast.literal_eval(n) |
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return line |
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def _k8s_object_to_st2_trigger(self, k8s_object): |
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# Define some variables |
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try: |
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resource_type = k8s_object['type'] |
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object_kind = k8s_object['object']['kind'] |
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name = k8s_object['object']['metadata']['name'] |
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namespace = k8s_object['object']['metadata']['namespace'] |
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uid = k8s_object['object']['metadata']['uid'] |
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labels_data = k8s_object['object']['metadata']['labels'] |
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except KeyError: |
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msg = 'One of "type", "kind", "name", "namespace" or "uid" or "labels" ' + \ |
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'do not exist in the object. Incoming object=%s' % k8s_object |
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self._log.exception(msg) |
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raise |
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else: |
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payload = self._build_a_trigger(resource_type=resource_type, name=name, |
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labels=labels_data, namespace=namespace, |
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object_kind=object_kind, uid=uid) |
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self._log.debug('Trigger payload: %s.' % payload) |
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return payload |
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def _build_a_trigger(self, resource_type, name, labels, namespace, object_kind, uid): |
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payload = { |
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'resource': resource_type, |
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'name': name, |
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'labels': labels, |
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'namespace': namespace, |
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'object_kind': object_kind, |
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'uid': uid |
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} |
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return payload |
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def cleanup(self): |
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pass |
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def add_trigger(self, trigger): |
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pass |
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def update_trigger(self, trigger): |
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pass |
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def remove_trigger(self, trigger): |
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pass |
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StackStorm /
st2contrib
