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# Copyright 2016 gRPC authors.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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"""A client that makes both Greeter and RouteGuide RPCs."""
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from __future__ import print_function
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import random
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import time
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import grpc
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import helloworld_pb2
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import helloworld_pb2_grpc
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import route_guide_pb2
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import route_guide_pb2_grpc
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import route_guide_resources
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def make_route_note(message, latitude, longitude):
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return route_guide_pb2.RouteNote(
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message=message,
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location=route_guide_pb2.Point(latitude=latitude, longitude=longitude))
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def guide_get_one_feature(route_guide_stub, point):
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feature = route_guide_stub.GetFeature(point)
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if not feature.location:
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print("Server returned incomplete feature")
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return
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if feature.name:
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print("Feature called %s at %s" % (feature.name, feature.location))
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else:
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print("Found no feature at %s" % feature.location)
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def guide_get_feature(route_guide_stub):
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guide_get_one_feature(
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route_guide_stub,
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route_guide_pb2.Point(latitude=409146138, longitude=-746188906))
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guide_get_one_feature(route_guide_stub,
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route_guide_pb2.Point(latitude=0, longitude=0))
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def guide_list_features(route_guide_stub):
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rectangle = route_guide_pb2.Rectangle(
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lo=route_guide_pb2.Point(latitude=400000000, longitude=-750000000),
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hi=route_guide_pb2.Point(latitude=420000000, longitude=-730000000))
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print("Looking for features between 40, -75 and 42, -73")
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features = route_guide_stub.ListFeatures(rectangle)
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for feature in features:
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print("Feature called %s at %s" % (feature.name, feature.location))
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def generate_route(feature_list):
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for _ in range(0, 10):
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random_feature = feature_list[random.randint(0, len(feature_list) - 1)]
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print("Visiting point %s" % random_feature.location)
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yield random_feature.location
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time.sleep(random.uniform(0.5, 1.5))
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def guide_record_route(route_guide_stub):
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feature_list = route_guide_resources.read_route_guide_database()
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route_iterator = generate_route(feature_list)
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route_summary = route_guide_stub.RecordRoute(route_iterator)
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print("Finished trip with %s points " % route_summary.point_count)
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print("Passed %s features " % route_summary.feature_count)
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print("Travelled %s meters " % route_summary.distance)
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print("It took %s seconds " % route_summary.elapsed_time)
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def generate_messages():
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messages = [
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make_route_note("First message", 0, 0),
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make_route_note("Second message", 0, 1),
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make_route_note("Third message", 1, 0),
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make_route_note("Fourth message", 0, 0),
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make_route_note("Fifth message", 1, 0),
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]
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for msg in messages:
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print("Sending %s at %s" % (msg.message, msg.location))
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yield msg
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time.sleep(random.uniform(0.5, 1.0))
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def guide_route_chat(route_guide_stub):
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responses = route_guide_stub.RouteChat(generate_messages())
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for response in responses:
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print("Received message %s at %s" %
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(response.message, response.location))
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def run():
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channel = grpc.insecure_channel('localhost:50051')
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greeter_stub = helloworld_pb2_grpc.GreeterStub(channel)
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route_guide_stub = route_guide_pb2_grpc.RouteGuideStub(channel)
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greeter_response = greeter_stub.SayHello(
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helloworld_pb2.HelloRequest(name='you'))
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print("Greeter client received: " + greeter_response.message)
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print("-------------- GetFeature --------------")
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guide_get_feature(route_guide_stub)
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print("-------------- ListFeatures --------------")
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guide_list_features(route_guide_stub)
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print("-------------- RecordRoute --------------")
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guide_record_route(route_guide_stub)
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print("-------------- RouteChat --------------")
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guide_route_chat(route_guide_stub)
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if __name__ == '__main__':
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run()
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