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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."""
+
+import random
+import time
+
+import route_guide_pb2
+import route_guide_resources
+
+_TIMEOUT_SECONDS = 30
+
+
+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, _TIMEOUT_SECONDS)
+ 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):
+ rect = 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(rect, _TIMEOUT_SECONDS)
+
+ 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_iter = generate_route(feature_list)
+ route_summary = stub.RecordRoute(route_iter, _TIMEOUT_SECONDS)
+ 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(), _TIMEOUT_SECONDS)
+ for response in responses:
+ print "Received message %s at %s" % (response.message, response.location)
+
+
+def run():
+ with route_guide_pb2.early_adopter_create_RouteGuide_stub('localhost', 50051) as stub:
+ 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()