Sync examples/trace/grpc proto file with other opencensus projects (#146)

Author: wkiser

examples/trace/grpc/hello_world.proto

@@ -14,8 +14,14 @@
 
 syntax = "proto3";
 
+option java_multiple_files = true;
+option java_package = "io.grpc.examples.helloworld";
+option java_outer_classname = "HelloWorldProto";
+
+package helloworld;
+
 // The hello world service definition.
-service HelloWorld {
+service Greeter {
   // Say hello to the request sender (unary-unary)
   rpc SayHello (HelloRequest) returns (HelloReply) {}
 }

examples/trace/grpc/hello_world_client.py

@@ -34,7 +34,7 @@ def main():
         host_port=HOST_PORT)
     channel = grpc.insecure_channel(HOST_PORT)
     channel = grpc.intercept_channel(channel, tracer_interceptor)
-    stub = hello_world_pb2_grpc.HelloWorldStub(channel)
+    stub = hello_world_pb2_grpc.GreeterStub(channel)
     response = stub.SayHello(hello_world_pb2.HelloRequest(name='you'))
     print("Message received: " + response.message)
 

examples/trace/grpc/hello_world_pb2.py

@@ -4,7 +4,7 @@
 import hello_world_pb2 as hello__world__pb2
 
 
-class HelloWorldStub(object):
+class GreeterStub(object):
   """The hello world service definition.
   """
 
@@ -15,13 +15,13 @@ def __init__(self, channel):
       channel: A grpc.Channel.
     """
     self.SayHello = channel.unary_unary(
-        '/HelloWorld/SayHello',
+        '/helloworld.Greeter/SayHello',
         request_serializer=hello__world__pb2.HelloRequest.SerializeToString,
         response_deserializer=hello__world__pb2.HelloReply.FromString,
         )
 
 
-class HelloWorldServicer(object):
+class GreeterServicer(object):
   """The hello world service definition.
   """
 
@@ -33,7 +33,7 @@ def SayHello(self, request, context):
     raise NotImplementedError('Method not implemented!')
 
 
-def add_HelloWorldServicer_to_server(servicer, server):
+def add_GreeterServicer_to_server(servicer, server):
   rpc_method_handlers = {
       'SayHello': grpc.unary_unary_rpc_method_handler(
           servicer.SayHello,
@@ -42,5 +42,5 @@ def add_HelloWorldServicer_to_server(servicer, server):
       ),
   }
   generic_handler = grpc.method_handlers_generic_handler(
-      'HelloWorld', rpc_method_handlers)
+      'helloworld.Greeter', rpc_method_handlers)
   server.add_generic_rpc_handlers((generic_handler,))

examples/trace/grpc/hello_world_pb2_grpc.py

@@ -27,7 +27,7 @@
 _ONE_DAY_IN_SECONDS = 60 * 60 * 24
 
 
-class HelloWorld(hello_world_pb2_grpc.HelloWorldServicer):
+class HelloWorld(hello_world_pb2_grpc.GreeterServicer):
 
     def SayHello(self, request, context):
         return hello_world_pb2.HelloReply(message='Hello, %s!' % request.name)
@@ -41,7 +41,7 @@ def serve():
     server = grpc.server(
         futures.ThreadPoolExecutor(max_workers=10),
         interceptors=(tracer_interceptor,))
-    hello_world_pb2_grpc.add_HelloWorldServicer_to_server(HelloWorld(), server)
+    hello_world_pb2_grpc.add_GreeterServicer_to_server(HelloWorld(), server)
     server.add_insecure_port('[::]:50051')
     server.start()
     try: