Xfinity Gateway device_tracker platform (home-assistant#21026)

* initial commit

* updated .coveragerc, CODEOWNERS, generated requirements_all.txt

* fixed lines exceeding 79 characters

* pylint fixes

* shorten docstring and simplify get_scanner

* extract initialization into get_scanner

* bump pypi version

* name change

.coveragerc

@@ -138,6 +138,7 @@ omit =
     homeassistant/components/device_tracker/trackr.py
     homeassistant/components/device_tracker/ubee.py
     homeassistant/components/device_tracker/ubus.py
+    homeassistant/components/device_tracker/xfinity.py
     homeassistant/components/digital_ocean/*
     homeassistant/components/dominos/*
     homeassistant/components/doorbird/*

CODEOWNERS

@@ -63,12 +63,13 @@ homeassistant/components/cover/group.py @cdce8p
 homeassistant/components/cover/template.py @PhracturedBlue
 homeassistant/components/device_tracker/asuswrt.py @kennedyshead
 homeassistant/components/device_tracker/automatic.py @armills
+homeassistant/components/device_tracker/bt_smarthub.py @jxwolstenholme
 homeassistant/components/device_tracker/huawei_router.py @abmantis
 homeassistant/components/device_tracker/quantum_gateway.py @cisasteelersfan
 homeassistant/components/device_tracker/tile.py @bachya
 homeassistant/components/device_tracker/traccar.py @ludeeus
-homeassistant/components/device_tracker/bt_smarthub.py @jxwolstenholme
 homeassistant/components/device_tracker/synology_srm.py @aerialls
+homeassistant/components/device_tracker/xfinity.py @cisasteelersfan
 homeassistant/components/light/lifx_legacy.py @amelchio
 homeassistant/components/light/yeelight.py @rytilahti
 homeassistant/components/light/yeelightsunflower.py @lindsaymarkward

homeassistant/components/device_tracker/xfinity.py

@@ -0,0 +1,58 @@
+"""Support for device tracking via Xfinity Gateways."""
+import logging
+
+from requests.exceptions import RequestException
+import voluptuous as vol
+
+import homeassistant.helpers.config_validation as cv
+from homeassistant.components.device_tracker import (
+    DOMAIN, PLATFORM_SCHEMA, DeviceScanner)
+from homeassistant.const import CONF_HOST
+
+REQUIREMENTS = ['xfinity-gateway==0.0.4']
+
+_LOGGER = logging.getLogger(__name__)
+
+DEFAULT_HOST = '10.0.0.1'
+
+PLATFORM_SCHEMA = PLATFORM_SCHEMA.extend({
+    vol.Optional(CONF_HOST, default=DEFAULT_HOST): cv.string
+})
+
+
+def get_scanner(hass, config):
+    """Validate the configuration and return an Xfinity Gateway scanner."""
+    from xfinity_gateway import XfinityGateway
+
+    gateway = XfinityGateway(config[DOMAIN][CONF_HOST])
+    scanner = None
+    try:
+        gateway.scan_devices()
+        scanner = XfinityDeviceScanner(gateway)
+    except (RequestException, ValueError):
+        _LOGGER.error("Error communicating with Xfinity Gateway. "
+                      "Check host: %s", gateway.host)
+
+    return scanner
+
+
+class XfinityDeviceScanner(DeviceScanner):
+    """This class queries an Xfinity Gateway."""
+
+    def __init__(self, gateway):
+        """Initialize the scanner."""
+        self.gateway = gateway
+
+    def scan_devices(self):
+        """Scan for new devices and return a list of found MACs."""
+        connected_devices = []
+        try:
+            connected_devices = self.gateway.scan_devices()
+        except (RequestException, ValueError):
+            _LOGGER.error("Unable to scan devices. "
+                          "Check connection to gateway")
+        return connected_devices
+
+    def get_device_name(self, device):
+        """Return the name of the given device or None if we don't know."""
+        return self.gateway.get_device_name(device)

requirements_all.txt

@@ -1778,6 +1778,9 @@ xbee-helper==0.0.7
 # homeassistant.components.sensor.xbox_live
 xboxapi==0.1.1
 
+# homeassistant.components.device_tracker.xfinity
+xfinity-gateway==0.0.4
+
 # homeassistant.components.knx
 xknx==0.9.4