Plugin Name: ProtobufDecoder
The ProtobufDecoder is used for Heka message objects that have been serialized into protocol buffers format. This is the format that Heka uses to communicate with other Heka instances, so one will always be included in your Heka configuration under the name “ProtobufDecoder”, whether specified or not. The ProtobufDecoder has no configuration options.
The hekad protocol buffers message schema is defined in the message.proto file in the message package.