successful adds to database

db.py

 import logging
+
+import time
+
 import re
 import six
 import uuid
@@ -81,8 +84,8 @@ class DDBUUIDField(DDBField):
 
 class DDBTable(object):
 
-    TABLE_NAME = ''
-    REGION_NAME = 'us-west-2'
+    TABLE_NAME = 'measurements'
+    REGION_NAME = 'eu-central-1'
     KEY_SCHEMA = []
     LOCAL_SECONDARY_INDEXES = []
     GLOBAL_SECONDARY_INDEXES = []
@@ -190,32 +193,35 @@ class DDBTable(object):
 class DDBmeasurements(DDBTable):
     TABLE_NAME = 'measurements'
     KEY_SCHEMA = [{
-        'AttributeName': 'measurement_id',
-        'KeyType': 'HASH',
+        'AttributeName': 'sid',
+        'KeyType': 'Number',
+    },{
+        'AttributeName': 'tid',
+        'KeyType': 'Number',
     }]
     PROVISIONED_THROUGHPUT = {
         'ReadCapacityUnits': 1,
         'WriteCapacityUnits': 1
     }
     FIELDS = {
-        'measurement_id': DDBUUIDField,
-        'type_id': DDBIntField,
-        'station_id': DDBIntField,
+        'sid': DDBIntField,
+        'tid': DDBIntField,
+        'time': DDBIntField
     }
 
     @gen.coroutine
     def update(self, measurement_id, type_id, station_id):
         message = yield gen.Task(self._dynamodb(operation='UpdateItem').call,
             TableName=self._get_table_name(),
-            Key=self.encode_item(data={'measurement_id': measurement_id}),
-            AttributeUpdates=self.encode_item(data={'type_id': type_id, 'station_id': station_id}, update=True))
+            Key=self.encode_item(data={'tid': type_id, 'sid': station_id}),
+            AttributeUpdates=self.encode_item(data={'time': time.time()}, update=True))
         raise gen.Return(message)
 
     @gen.coroutine
-    def get(self, measurement_id, type_id, station_id):
+    def get(self, tid=1, sid=1):
         message = yield gen.Task(self._dynamodb(operation='GetItem').call,
             TableName=self._get_table_name(),
-            Key=self.encode_item(data={'measurement_id': measurement_id}))
+            Key=self.encode_item(data={'tid': tid, 'sid': sid}))
         data = self.decode_item(item=message['Item'])
         raise gen.Return(data)
 
@@ -227,12 +233,12 @@ if __name__ == '__main__':
     measurements.create_table()
 
     # You still can run code synchronous if required
-    measurements.update_(measurement_id=measurement_id, station_id=1, type_id=1)
+    measurements.update(measurement_id=measurement_id, station_id=1, type_id=7)
 
     # run asynchronous with callback
-    measurements.get_(measurement_id=measurement_id, callback=print)
+    measurements.get()
 
     # You even can run methods wrapped with @coroutine synchronously
     ioloop = IOLoop.instance()
-    result = ioloop.run_sync(partial(measurements.get, measurement_id=measurement_id))
+    result = ioloop.run_sync(partial(measurements.get, sid=1, tid=7))
     print(result)