Added a new component to log state changes to a Splunk instance using the HTTP Event Collector

.coveragerc

@@ -80,6 +80,7 @@ omit =
     homeassistant/components/statsd.py
     homeassistant/components/influxdb.py
     homeassistant/components/keyboard.py
+    homeassistant/components/splunk.py
     homeassistant/components/light/blinksticklight.py
     homeassistant/components/light/hue.py
     homeassistant/components/light/hyperion.py

homeassistant/components/splunk.py

@@ -0,0 +1,94 @@
+"""
+homeassistant.components.splunk
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+Splunk component which allows you to send data to an Splunk instance
+utilizing the HTTP Event Collector.
+"""
+import logging
+import requests
+import json
+import homeassistant.util as util
+from homeassistant.helpers import validate_config
+from homeassistant.const import (EVENT_STATE_CHANGED, STATE_ON, STATE_OFF,
+                                 STATE_UNLOCKED, STATE_LOCKED, STATE_UNKNOWN)
+from homeassistant.components.sun import (STATE_ABOVE_HORIZON,
+                                          STATE_BELOW_HORIZON)
+
+_LOGGER = logging.getLogger(__name__)
+
+DOMAIN = "splunk"
+DEPENDENCIES = []
+
+DEFAULT_HOST = 'localhost'
+DEFAULT_PORT = '8088'
+DEFAULT_SSL = False
+
+CONF_HOST = 'host'
+CONF_PORT = 'port'
+CONF_TOKEN = 'token'
+CONF_SSL = 'SSL'
+
+
+def setup(hass, config):
+    """ Setup the Splunk component. """
+
+    if not validate_config(config, {DOMAIN: ['token']}, _LOGGER):
+        _LOGGER.error("You must include the token for your HTTP "
+                      "Event Collector input in Splunk.")
+        return False
+
+    conf = config[DOMAIN]
+
+    host = conf[CONF_HOST]
+    port = util.convert(conf.get(CONF_PORT), int, DEFAULT_PORT)
+    token = util.convert(conf.get(CONF_TOKEN), str)
+    use_ssl = util.convert(conf.get(CONF_SSL), bool, DEFAULT_SSL)
+    if use_ssl:
+        uri_scheme = "https://"
+    else:
+        uri_scheme = "http://"
+    event_collector = uri_scheme + host + ":" + port + \
+        "/services/collector/event"
+    headers = {'Authorization': 'Splunk ' + token}
+
+    def splunk_event_listener(event):
+        """ Listen for new messages on the bus and sends them to Splunk. """
+
+        state = event.data.get('new_state')
+
+        if state is None:
+            return
+
+        if state.state in (STATE_ON, STATE_LOCKED, STATE_ABOVE_HORIZON):
+            _state = 1
+        elif state.state in (STATE_OFF, STATE_UNLOCKED, STATE_UNKNOWN,
+                             STATE_BELOW_HORIZON):
+            _state = 0
+        else:
+            _state = state.state
+            try:
+                _state = float(_state)
+            except ValueError:
+                pass
+
+        json_body = [
+            {
+                'domain': state.domain,
+                'entity_id': state.object_id,
+                'attributes': state.attributes,
+                'time': str(event.time_fired),
+                'value': _state,
+            }
+        ]
+
+        try:
+            payload = {"host": event_collector,
+                       "event": json_body}
+            requests.post(event_collector, data=json.dumps(payload),
+                          headers=headers)
+        except requests.exceptions.RequestException as error:
+            _LOGGER.exception('Error saving event to Splunk: %s', error)
+
+    hass.bus.listen(EVENT_STATE_CHANGED, splunk_event_listener)
+
+    return True