Take a look at Python API.
http://code.google.com/apis/protocolbuffers/docs/reference/python-generated.html#extension
There are few examples of how to use extensions in Python.
On Mon, Sep 5, 2011 at 9:58 PM, Dave <dave.johns...@me.com> wrote:
> Hi, I have a C++ based service that uses messages defined like so....
>
> [code]
> message RPCMessage {
> required string rpcname = 1;
> extensions 100 to max;
> }
> [/code]
>
>
> [code]
>
>
> message CustomRPCMessage {
>
> message Response {
> required String id = 1;
> required int version = 2;
> repeated String data = 3;
> }
>
> extend RPCMessage {
> repeated Response response = 100;
> }
> }
> [/code]
>
> I want to write a python based script to act as a dummy server for
> testing my client.
>
> In C++ I can write:
>
> CustomRPCMessage::Response* response =
> message.AddExtension(CustomRPCMessage::response);
> response->set_id("My ID");
> response->set_version(10);
> ....
>
>
> I've been trying to do the same in python, but can't seem to figure
> out how to do it. The AddExtension method doesn't seem to be
> available. Can anyone point me in the right direction? Cheers?
>
>
> At the moment I have....
> [code]
> import CustomMessages_pb2
> import RPCMessage_pb2
>
> message = RPCMessage_pb2.RPCMessage()
> message.rpcName = 'MyCustomMessage'
>
> message.AddExtension(CustomMessages_pb2.CustomRPCMessage.response)
>
> print 'do something here'
> [/code]
>
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