| # Copyright 2015 gRPC authors. |
| # |
| # Licensed under the Apache License, Version 2.0 (the "License"); |
| # you may not use this file except in compliance with the License. |
| # You may obtain a copy of the License at |
| # |
| # http://www.apache.org/licenses/LICENSE-2.0 |
| # |
| # Unless required by applicable law or agreed to in writing, software |
| # distributed under the License is distributed on an "AS IS" BASIS, |
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| # See the License for the specific language governing permissions and |
| # limitations under the License. |
| """The Python implementation of the gRPC route guide client.""" |
| |
| from __future__ import print_function |
| |
| import random |
| |
| import grpc |
| |
| import route_guide_pb2 |
| import route_guide_pb2_grpc |
| import route_guide_resources |
| |
| |
| def make_route_note(message, latitude, longitude): |
| return route_guide_pb2.RouteNote( |
| message=message, |
| location=route_guide_pb2.Point(latitude=latitude, longitude=longitude)) |
| |
| |
| def guide_get_one_feature(stub, point): |
| feature = stub.GetFeature(point) |
| if not feature.location: |
| print("Server returned incomplete feature") |
| return |
| |
| if feature.name: |
| print("Feature called %s at %s" % (feature.name, feature.location)) |
| else: |
| print("Found no feature at %s" % feature.location) |
| |
| |
| def guide_get_feature(stub): |
| guide_get_one_feature(stub, |
| route_guide_pb2.Point( |
| latitude=409146138, longitude=-746188906)) |
| guide_get_one_feature(stub, route_guide_pb2.Point(latitude=0, longitude=0)) |
| |
| |
| def guide_list_features(stub): |
| rectangle = route_guide_pb2.Rectangle( |
| lo=route_guide_pb2.Point(latitude=400000000, longitude=-750000000), |
| hi=route_guide_pb2.Point(latitude=420000000, longitude=-730000000)) |
| print("Looking for features between 40, -75 and 42, -73") |
| |
| features = stub.ListFeatures(rectangle) |
| |
| for feature in features: |
| print("Feature called %s at %s" % (feature.name, feature.location)) |
| |
| |
| def generate_route(feature_list): |
| for _ in range(0, 10): |
| random_feature = feature_list[random.randint(0, len(feature_list) - 1)] |
| print("Visiting point %s" % random_feature.location) |
| yield random_feature.location |
| |
| |
| def guide_record_route(stub): |
| feature_list = route_guide_resources.read_route_guide_database() |
| |
| route_iterator = generate_route(feature_list) |
| route_summary = stub.RecordRoute(route_iterator) |
| print("Finished trip with %s points " % route_summary.point_count) |
| print("Passed %s features " % route_summary.feature_count) |
| print("Travelled %s meters " % route_summary.distance) |
| print("It took %s seconds " % route_summary.elapsed_time) |
| |
| |
| def generate_messages(): |
| messages = [ |
| make_route_note("First message", 0, 0), |
| make_route_note("Second message", 0, 1), |
| make_route_note("Third message", 1, 0), |
| make_route_note("Fourth message", 0, 0), |
| make_route_note("Fifth message", 1, 0), |
| ] |
| for msg in messages: |
| print("Sending %s at %s" % (msg.message, msg.location)) |
| yield msg |
| |
| |
| def guide_route_chat(stub): |
| responses = stub.RouteChat(generate_messages()) |
| for response in responses: |
| print("Received message %s at %s" % (response.message, |
| response.location)) |
| |
| |
| def run(): |
| channel = grpc.insecure_channel('localhost:50051') |
| stub = route_guide_pb2_grpc.RouteGuideStub(channel) |
| print("-------------- GetFeature --------------") |
| guide_get_feature(stub) |
| print("-------------- ListFeatures --------------") |
| guide_list_features(stub) |
| print("-------------- RecordRoute --------------") |
| guide_record_route(stub) |
| print("-------------- RouteChat --------------") |
| guide_route_chat(stub) |
| |
| |
| if __name__ == '__main__': |
| run() |