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# 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 time
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
time.sleep(random.uniform(0.5, 1.5))
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
time.sleep(random.uniform(0.5, 1.0))
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()
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