From 9c20e0ae392ba353109d7bea344032c56cff1136 Mon Sep 17 00:00:00 2001
From: Tomas Babej <tomasbabej@gmail.com>
Date: Sat, 8 Aug 2015 19:22:16 +0200
Subject: [PATCH] backends: Introduce a Backend base class

---
 tasklib/backends.py | 29 +++++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)
 create mode 100644 tasklib/backends.py

diff --git a/tasklib/backends.py b/tasklib/backends.py
new file mode 100644
index 0000000..1bebafd
--- /dev/null
+++ b/tasklib/backends.py
@@ -0,0 +1,29 @@
+import abc
+
+class Backend(object):
+
+    @abc.abstractmethod
+    def filter_tasks(self, filter_obj):
+        """Returns a list of Task objects matching the given filter"""
+        pass
+
+    @abc.abstractmethod
+    def save_task(self, task):
+        pass
+
+    @abc.abstractmethod
+    def delete_task(self, task):
+        pass
+
+    @abc.abstractmethod
+    def start_task(self, task):
+        pass
+
+    @abc.abstractmethod
+    def stop_task(self, task):
+        pass
+
+    @abc.abstractmethod
+    def sync(self):
+        """Syncs the backend database with the taskd server"""
+        pass
-- 
2.39.2