added support for rpm packaging and basic support for deb

lib/huey/backends/base.py

@@ -0,0 +1,113 @@
+class BaseQueue(object):
+    """
+    Base implementation for a Queue, all backends should subclass
+    """
+
+    # whether this backend blocks while waiting for new results or should be
+    # polled by the consumer
+    blocking = False
+
+    def __init__(self, name, **connection):
+        """
+        Initialize the Queue - this happens once when the module is loaded
+
+        :param name: A string representation of the name for this queue
+        :param connection: Connection parameters for the queue
+        """
+        self.name = name
+        self.connection = connection
+
+    def write(self, data):
+        """
+        Push 'data' onto the queue
+        """
+        raise NotImplementedError
+
+    def read(self):
+        """
+        Pop 'data' from the queue, returning None if no data is available --
+        an empty queue should not raise an Exception!
+        """
+        raise NotImplementedError
+
+    def remove(self, data):
+        """
+        Remove the given data from the queue
+        """
+        raise NotImplementedError
+
+    def flush(self):
+        """
+        Delete everything from the queue
+        """
+        raise NotImplementedError
+
+    def __len__(self):
+        """
+        Used primarily in tests, but return the number of items in the queue
+        """
+        raise NotImplementedError
+
+
+class BaseSchedule(object):
+    def __init__(self, name, **connection):
+        """
+        Initialize the Queue - this happens once when the module is loaded
+
+        :param name: A string representation of the name for this queue
+        :param connection: Connection parameters for the queue
+        """
+        self.name = name
+        self.connection = connection
+
+    def add(self, data, ts):
+        """
+        Add the timestamped data to the task schedule.
+        """
+        raise NotImplementedError
+
+    def read(self, ts):
+        """
+        Read scheduled items for the given timestamp
+        """
+        raise NotImplementedError
+
+    def flush(self):
+        """Delete all items in schedule."""
+        raise NotImplementedError
+
+
+class BaseDataStore(object):
+    """
+    Base implementation for a data store
+    """
+    def __init__(self, name, **connection):
+        """
+        Initialize the data store
+        """
+        self.name = name
+        self.connection = connection
+
+    def put(self, key, value):
+        raise NotImplementedError
+
+    def peek(self, key):
+        raise NotImplementedError
+
+    def get(self, key):
+        raise NotImplementedError
+
+    def flush(self):
+        raise NotImplementedError
+
+
+class BaseEventEmitter(object):
+    def __init__(self, channel, **connection):
+        self.channel = channel
+        self.connection = connection
+
+    def emit(self, message):
+        raise NotImplementedError
+
+
+Components = (BaseQueue, BaseDataStore, BaseSchedule, BaseEventEmitter)