Add submodule ddb

CHANGELOG.md

@@ -2,6 +2,7 @@
 
 ## Unreleased
 - aprs client: Added the possibility of a timed callback
+- Added ogn.ddb submodule which provides the generator `get_ddb_devices`
 
 ## 0.3.0 - 2016-03-18
 The repository ogn-python splitted up into two separate repositories:

ogn/ddb/__init__.py

@@ -0,0 +1 @@
+from ogn.ddb.utils import get_ddb_devices  # flake8: noqa

ogn/ddb/utils.py

@@ -0,0 +1,11 @@
+import requests
+
+DDB_URL = "http://ddb.glidernet.org/download/?j=1"
+
+
+def get_ddb_devices():
+    r = requests.get(DDB_URL)
+    for device in r.json()['devices']:
+        device.update({'identified': device['identified'] == 'Y',
+                       'tracked': device['tracked'] == 'Y'})
+        yield device

tests/ddb/test_utils.py

@@ -0,0 +1,10 @@
+import unittest
+
+from ogn.ddb import get_ddb_devices
+
+
+class TestStringMethods(unittest.TestCase):
+    def test_get_ddb_devices(self):
+        devices = list(get_ddb_devices())
+        self.assertGreater(len(devices), 4000)
+        self.assertCountEqual(devices[0].keys(), ['device_type', 'device_id', 'aircraft_model', 'registration', 'cn', 'tracked', 'identified'])