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# Copyright 2015, Google Inc.
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are
# met:
#
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above
# copyright notice, this list of conditions and the following disclaimer
# in the documentation and/or other materials provided with the
# distribution.
# * Neither the name of Google Inc. nor the names of its
# contributors may be used to endorse or promote products derived from
# this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
"""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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