Add support for yamaha receiver discovery (#54)

Author: sdague

netdisco/discoverables/yamaha.py

@@ -0,0 +1,27 @@
+"""Discover Yamaha Receivers."""
+from netdisco.util import urlparse
+from . import SSDPDiscoverable
+
+
+class Discoverable(SSDPDiscoverable):
+    """Add support for discovering Yamaha Receivers."""
+
+    def info_from_entry(self, entry):
+        """Return the most important info from a uPnP entry."""
+        descurl = entry.values['location']
+        url = urlparse(entry.values['location'])
+        yam = entry.description['X_device']
+        ctrlurl = "%s://%s%s" % (
+            url.scheme,
+            url.netloc,
+            yam['X_serviceList']['X_service']['X_controlURL'])
+        device = entry.description['device']
+
+        return (device['friendlyName'], ctrlurl, descurl)
+
+    def get_entries(self):
+        """Get all the Yamaha uPnP entries."""
+        return self.find_by_device_description({
+            "manufacturer": "Yamaha Corporation",
+            "deviceType": "urn:schemas-upnp-org:device:MediaRenderer:1"
+        })