From 2f6e0c6002f732b7f938a0f770f19c9dec9269f1 Mon Sep 17 00:00:00 2001 From: Vratko Polak Date: Fri, 6 Sep 2019 15:20:07 +0200 Subject: [PATCH] papi: let async calls return context Callback receives "reply" messages containing context, but previously there was no easy way to get the automatically generated context value of the originally sent "command" message. With this, the caller can store the contexts, so the callback knows which command got replied to. Type: feature Change-Id: I58ca812d20b03916f74096c396126710115a747c Signed-off-by: Vratko Polak --- src/vpp-api/python/vpp_papi/vpp_papi.py | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/src/vpp-api/python/vpp_papi/vpp_papi.py b/src/vpp-api/python/vpp_papi/vpp_papi.py index 5af58a41766..63fcc70e395 100644 --- a/src/vpp-api/python/vpp_papi/vpp_papi.py +++ b/src/vpp-api/python/vpp_papi/vpp_papi.py @@ -669,13 +669,17 @@ class VPPApiClient(object): return rl def _call_vpp_async(self, i, msg, **kwargs): - """Given a message, send the message and await a reply. + """Given a message, send the message and return the context. msgdef - the message packing definition i - the message type index context - context number - chosen at random if not supplied. The remainder of the kwargs are the arguments to the API call. + + The reply message(s) will be delivered later to the registered callback. + The returned context will help with assigning which call + the reply belongs to. """ if 'context' not in kwargs: context = self.get_context() @@ -691,6 +695,7 @@ class VPPApiClient(object): b = msg.pack(kwargs) self.transport.write(b) + return context def register_event_callback(self, callback): """Register a callback for async messages. -- 2.16.6