Comed Hourly Pricing sensor (#6378)

* Add ComEd RRTP price sensor

* Update wording to reflect ComEd's naming change from 'RRTP' to 'Hourly Pricing'

* Changed name of sensor source file

* Cleanup based on requested changes

* More cleanup

* small cleanups

.coveragerc

@@ -310,6 +310,7 @@ omit =
     homeassistant/components/sensor/broadlink.py
     homeassistant/components/sensor/dublin_bus_transport.py
     homeassistant/components/sensor/coinmarketcap.py
+    homeassistant/components/sensor/comed_hourly_pricing.py
     homeassistant/components/sensor/cpuspeed.py
     homeassistant/components/sensor/cups.py
     homeassistant/components/sensor/currencylayer.py

homeassistant/components/sensor/comed_hourly_pricing.py

@@ -0,0 +1,110 @@
+"""
+Support for ComEd Hourly Pricing data.
+
+For more details about this platform, please refer to the documentation at
+https://home-assistant.io/components/sensor.comed_hourly_pricing/
+"""
+from datetime import timedelta
+import logging
+import voluptuous as vol
+
+from requests import RequestException, get
+
+import homeassistant.helpers.config_validation as cv
+from homeassistant.components.sensor import PLATFORM_SCHEMA
+from homeassistant.const import ATTR_ATTRIBUTION, STATE_UNKNOWN
+from homeassistant.helpers.entity import Entity
+
+_LOGGER = logging.getLogger(__name__)
+_RESOURCE = 'https://hourlypricing.comed.com/api'
+
+SCAN_INTERVAL = timedelta(minutes=5)
+
+CONF_MONITORED_FEEDS = 'monitored_feeds'
+CONF_SENSOR_TYPE = 'type'
+CONF_OFFSET = 'offset'
+CONF_NAME = 'name'
+
+CONF_FIVE_MINUTE = 'five_minute'
+CONF_CURRENT_HOUR_AVERAGE = 'current_hour_average'
+
+SENSOR_TYPES = {
+    CONF_FIVE_MINUTE: ['ComEd 5 Minute Price', 'c'],
+    CONF_CURRENT_HOUR_AVERAGE: ['ComEd Current Hour Average Price', 'c'],
+}
+
+TYPES_SCHEMA = vol.In(SENSOR_TYPES)
+
+SENSORS_SCHEMA = vol.Schema({
+    vol.Required(CONF_SENSOR_TYPE): TYPES_SCHEMA,
+    vol.Optional(CONF_OFFSET, default=0.0): vol.Coerce(float),
+    vol.Optional(CONF_NAME): cv.string
+})
+
+PLATFORM_SCHEMA = PLATFORM_SCHEMA.extend({
+    vol.Required(CONF_MONITORED_FEEDS): [SENSORS_SCHEMA]
+})
+
+
+def setup_platform(hass, config, add_devices, discovery_info=None):
+    """Setup the ComEd Hourly Pricing sensor."""
+    dev = []
+    for variable in config[CONF_MONITORED_FEEDS]:
+        dev.append(ComedHourlyPricingSensor(
+            variable[CONF_SENSOR_TYPE], variable[CONF_OFFSET],
+            variable.get(CONF_NAME)))
+
+    add_devices(dev)
+
+
+class ComedHourlyPricingSensor(Entity):
+    """Implementation of a ComEd Hourly Pricing sensor."""
+
+    def __init__(self, sensor_type, offset, name):
+        """Initialize the sensor."""
+        if name:
+            self._name = name
+        else:
+            self._name = SENSOR_TYPES[sensor_type][0]
+        self.type = sensor_type
+        self.offset = offset
+        self._state = None
+        self._unit_of_measurement = SENSOR_TYPES[sensor_type][1]
+
+    @property
+    def name(self):
+        """Return the name of the sensor."""
+        return self._name
+
+    @property
+    def state(self):
+        """Return the state of the sensor."""
+        return self._state
+
+    @property
+    def unit_of_measurement(self):
+        """Return the unit of measurement of this entity, if any."""
+        return self._unit_of_measurement
+
+    @property
+    def device_state_attributes(self):
+        """Return the state attributes."""
+        attrs = {ATTR_ATTRIBUTION: 'Data provided by ComEd Hourly '
+                                   'Pricing service'}
+        return attrs
+
+    def update(self):
+        """Get the ComEd Hourly Pricing data from the web service."""
+        try:
+            if self.type == CONF_FIVE_MINUTE:
+                url_string = _RESOURCE + '?type=5minutefeed'
+                response = get(url_string, timeout=10)
+                self._state = float(response.json()[0]['price']) + self.offset
+            elif self.type == CONF_CURRENT_HOUR_AVERAGE:
+                url_string = _RESOURCE + '?type=currenthouraverage'
+                response = get(url_string, timeout=10)
+                self._state = float(response.json()[0]['price']) + self.offset
+            else:
+                self._state = STATE_UNKNOWN
+        except (RequestException, ValueError, KeyError):
+            _LOGGER.warning('Could not update status for %s', self.name)