add rpc server/client

Change-Id: I1f3573f2a2dabb454e3ec83a90a7ee3a78660e73

scalpels/rpc/client.py

@@ -0,0 +1,13 @@
+import oslo_messaging as messaging
+from oslo_config import cfg
+class TestClient(object):
+
+    def __init__(self, transport):
+        target = messaging.Target(topic='test', version='2.0')
+        self._client = messaging.RPCClient(transport, target)
+
+    def test(self, ctxt, arg):
+        return self._client.call(ctxt, 'test', arg=arg)
+
+transport = messaging.get_transport(cfg.CONF)
+print TestClient(transport).test({"ctx":"this is context"}, 'ping')

scalpels/rpc/server.py

@@ -0,0 +1,31 @@
+from oslo_config import cfg
+import oslo_messaging
+
+class ServerControlEndpoint(object):
+
+    #target = oslo_messaging.Target(namespace='control', version='2.0')
+    target = oslo_messaging.Target(topic="test", version='2.0')
+
+    def __init__(self, server):
+        self.server = server
+
+    def stop(self, ctx):
+        if server:
+            self.server.stop()
+
+class TestEndpoint(object):
+
+    target = oslo_messaging.Target(topic="test", version='2.0')
+    def test(self, ctx, arg):
+        return arg
+
+transport = oslo_messaging.get_transport(cfg.CONF)
+target = oslo_messaging.Target(topic='test', server='localhost')
+endpoints = [
+    ServerControlEndpoint(None),
+    TestEndpoint(),
+]
+server = oslo_messaging.get_rpc_server(transport, target, endpoints,
+                                       executor='blocking')
+server.start()
+server.wait()