Remove redundant Node route guide examples

4 files changed, 0 insertions, 1216 deletions

diff --git a/src/node/examples/route_guide.proto b/src/node/examples/route_guide.proto
deleted file mode 100644
index fceb632a97..0000000000
--- a/src/node/examples/route_guide.proto
+++ /dev/null
@@ -1,120 +0,0 @@
-// 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.
-
-syntax = "proto3";
-
-option java_package = "io.grpc.examples";
-
-package examples;
-
-// Interface exported by the server.
-service RouteGuide {
-  // A simple RPC.
-  //
-  // Obtains the feature at a given position.
-  rpc GetFeature(Point) returns (Feature) {}
-
-  // A server-to-client streaming RPC.
-  //
-  // Obtains the Features available within the given Rectangle.  Results are
-  // streamed rather than returned at once (e.g. in a response message with a
-  // repeated field), as the rectangle may cover a large area and contain a
-  // huge number of features.
-  rpc ListFeatures(Rectangle) returns (stream Feature) {}
-
-  // A client-to-server streaming RPC.
-  //
-  // Accepts a stream of Points on a route being traversed, returning a
-  // RouteSummary when traversal is completed.
-  rpc RecordRoute(stream Point) returns (RouteSummary) {}
-
-  // A Bidirectional streaming RPC.
-  //
-  // Accepts a stream of RouteNotes sent while a route is being traversed,
-  // while receiving other RouteNotes (e.g. from other users).
-  rpc RouteChat(stream RouteNote) returns (stream RouteNote) {}
-}
-
-// Points are represented as latitude-longitude pairs in the E7 representation
-// (degrees multiplied by 10**7 and rounded to the nearest integer).
-// Latitudes should be in the range +/- 90 degrees and longitude should be in
-// the range +/- 180 degrees (inclusive).
-message Point {
-  int32 latitude = 1;
-  int32 longitude = 2;
-}
-
-// A latitude-longitude rectangle, represented as two diagonally opposite
-// points "lo" and "hi".
-message Rectangle {
-  // One corner of the rectangle.
-  Point lo = 1;
-
-  // The other corner of the rectangle.
-  Point hi = 2;
-}
-
-// A feature names something at a given point.
-//
-// If a feature could not be named, the name is empty.
-message Feature {
-  // The name of the feature.
-  string name = 1;
-
-  // The point where the feature is detected.
-  Point location = 2;
-}
-
-// A RouteNote is a message sent while at a given point.
-message RouteNote {
-  // The location from which the message is sent.
-  Point location = 1;
-
-  // The message to be sent.
-  string message = 2;
-}
-
-// A RouteSummary is received in response to a RecordRoute rpc.
-//
-// It contains the number of individual points received, the number of
-// detected features, and the total distance covered as the cumulative sum of
-// the distance between each point.
-message RouteSummary {
-  // The number of points received.
-  int32 point_count = 1;
-
-  // The number of known features passed while traversing the route.
-  int32 feature_count = 2;
-
-  // The distance covered in metres.
-  int32 distance = 3;
-
-  // The duration of the traversal in seconds.
-  int32 elapsed_time = 4;
-}
diff --git a/src/node/examples/route_guide_client.js b/src/node/examples/route_guide_client.js
deleted file mode 100644
index 647f3ffaba..0000000000
--- a/src/node/examples/route_guide_client.js
+++ /dev/null
@@ -1,240 +0,0 @@
-/*
- *
- * 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.
- *
- */
-
-'use strict';
-
-var async = require('async');
-var fs = require('fs');
-var parseArgs = require('minimist');
-var path = require('path');
-var _ = require('lodash');
-var grpc = require('..');
-var examples = grpc.load(__dirname + '/route_guide.proto').examples;
-var client = new examples.RouteGuide('localhost:50051',
-                                     grpc.Credentials.createInsecure());
-
-var COORD_FACTOR = 1e7;
-
-/**
- * Run the getFeature demo. Calls getFeature with a point known to have a
- * feature and a point known not to have a feature.
- * @param {function} callback Called when this demo is complete
- */
-function runGetFeature(callback) {
-  var next = _.after(2, callback);
-  function featureCallback(error, feature) {
-    if (error) {
-      callback(error);
-    }
-    if (feature.name === '') {
-      console.log('Found no feature at ' +
-          feature.location.latitude/COORD_FACTOR + ', ' +
-          feature.location.longitude/COORD_FACTOR);
-    } else {
-      console.log('Found feature called "' + feature.name + '" at ' +
-          feature.location.latitude/COORD_FACTOR + ', ' +
-          feature.location.longitude/COORD_FACTOR);
-    }
-    next();
-  }
-  var point1 = {
-    latitude: 409146138,
-    longitude: -746188906
-  };
-  var point2 = {
-    latitude: 0,
-    longitude: 0
-  };
-  client.getFeature(point1, featureCallback);
-  client.getFeature(point2, featureCallback);
-}
-
-/**
- * Run the listFeatures demo. Calls listFeatures with a rectangle containing all
- * of the features in the pre-generated database. Prints each response as it
- * comes in.
- * @param {function} callback Called when this demo is complete
- */
-function runListFeatures(callback) {
-  var rectangle = {
-    lo: {
-      latitude: 400000000,
-      longitude: -750000000
-    },
-    hi: {
-      latitude: 420000000,
-      longitude: -730000000
-    }
-  };
-  console.log('Looking for features between 40, -75 and 42, -73');
-  var call = client.listFeatures(rectangle);
-  call.on('data', function(feature) {
-      console.log('Found feature called "' + feature.name + '" at ' +
-          feature.location.latitude/COORD_FACTOR + ', ' +
-          feature.location.longitude/COORD_FACTOR);
-  });
-  call.on('end', callback);
-}
-
-/**
- * Run the recordRoute demo. Sends several randomly chosen points from the
- * pre-generated feature database with a variable delay in between. Prints the
- * statistics when they are sent from the server.
- * @param {function} callback Called when this demo is complete
- */
-function runRecordRoute(callback) {
-  var argv = parseArgs(process.argv, {
-    string: 'db_path'
-  });
-  fs.readFile(path.resolve(argv.db_path), function(err, data) {
-    if (err) {
-      callback(err);
-    }
-    var feature_list = JSON.parse(data);
-
-    var num_points = 10;
-    var call = client.recordRoute(function(error, stats) {
-      if (error) {
-        callback(error);
-      }
-      console.log('Finished trip with', stats.point_count, 'points');
-      console.log('Passed', stats.feature_count, 'features');
-      console.log('Travelled', stats.distance, 'meters');
-      console.log('It took', stats.elapsed_time, 'seconds');
-      callback();
-    });
-    /**
-     * Constructs a function that asynchronously sends the given point and then
-     * delays sending its callback
-     * @param {number} lat The latitude to send
-     * @param {number} lng The longitude to send
-     * @return {function(function)} The function that sends the point
-     */
-    function pointSender(lat, lng) {
-      /**
-       * Sends the point, then calls the callback after a delay
-       * @param {function} callback Called when complete
-       */
-      return function(callback) {
-        console.log('Visiting point ' + lat/COORD_FACTOR + ', ' +
-            lng/COORD_FACTOR);
-        call.write({
-          latitude: lat,
-          longitude: lng
-        });
-        _.delay(callback, _.random(500, 1500));
-      };
-    }
-    var point_senders = [];
-    for (var i = 0; i < num_points; i++) {
-      var rand_point = feature_list[_.random(0, feature_list.length - 1)];
-      point_senders[i] = pointSender(rand_point.location.latitude,
-                                     rand_point.location.longitude);
-    }
-    async.series(point_senders, function() {
-      call.end();
-    });
-  });
-}
-
-/**
- * Run the routeChat demo. Send some chat messages, and print any chat messages
- * that are sent from the server.
- * @param {function} callback Called when the demo is complete
- */
-function runRouteChat(callback) {
-  var call = client.routeChat();
-  call.on('data', function(note) {
-    console.log('Got message "' + note.message + '" at ' +
-        note.location.latitude + ', ' + note.location.longitude);
-  });
-
-  call.on('end', callback);
-
-  var notes = [{
-    location: {
-      latitude: 0,
-      longitude: 0
-    },
-    message: 'First message'
-  }, {
-    location: {
-      latitude: 0,
-      longitude: 1
-    },
-    message: 'Second message'
-  }, {
-    location: {
-      latitude: 1,
-      longitude: 0
-    },
-    message: 'Third message'
-  }, {
-    location: {
-      latitude: 0,
-      longitude: 0
-    },
-    message: 'Fourth message'
-  }];
-  for (var i = 0; i < notes.length; i++) {
-    var note = notes[i];
-    console.log('Sending message "' + note.message + '" at ' +
-        note.location.latitude + ', ' + note.location.longitude);
-    call.write(note);
-  }
-  call.end();
-}
-
-/**
- * Run all of the demos in order
- */
-function main() {
-  async.series([
-    runGetFeature,
-    runListFeatures,
-    runRecordRoute,
-    runRouteChat
-  ]);
-}
-
-if (require.main === module) {
-  main();
-}
-
-exports.runGetFeature = runGetFeature;
-
-exports.runListFeatures = runListFeatures;
-
-exports.runRecordRoute = runRecordRoute;
-
-exports.runRouteChat = runRouteChat;
diff --git a/src/node/examples/route_guide_db.json b/src/node/examples/route_guide_db.json
deleted file mode 100644
index 9d6a980ab7..0000000000
--- a/src/node/examples/route_guide_db.json
+++ /dev/null
@@ -1,601 +0,0 @@
-[{
-    "location": {
-        "latitude": 407838351,
-        "longitude": -746143763
-    },
-    "name": "Patriots Path, Mendham, NJ 07945, USA"
-}, {
-    "location": {
-        "latitude": 408122808,
-        "longitude": -743999179
-    },
-    "name": "101 New Jersey 10, Whippany, NJ 07981, USA"
-}, {
-    "location": {
-        "latitude": 413628156,
-        "longitude": -749015468
-    },
-    "name": "U.S. 6, Shohola, PA 18458, USA"
-}, {
-    "location": {
-        "latitude": 419999544,
-        "longitude": -740371136
-    },
-    "name": "5 Conners Road, Kingston, NY 12401, USA"
-}, {
-    "location": {
-        "latitude": 414008389,
-        "longitude": -743951297
-    },
-    "name": "Mid Hudson Psychiatric Center, New Hampton, NY 10958, USA"
-}, {
-    "location": {
-        "latitude": 419611318,
-        "longitude": -746524769
-    },
-    "name": "287 Flugertown Road, Livingston Manor, NY 12758, USA"
-}, {
-    "location": {
-        "latitude": 406109563,
-        "longitude": -742186778
-    },
-    "name": "4001 Tremley Point Road, Linden, NJ 07036, USA"
-}, {
-    "location": {
-        "latitude": 416802456,
-        "longitude": -742370183
-    },
-    "name": "352 South Mountain Road, Wallkill, NY 12589, USA"
-}, {
-    "location": {
-        "latitude": 412950425,
-        "longitude": -741077389
-    },
-    "name": "Bailey Turn Road, Harriman, NY 10926, USA"
-}, {
-    "location": {
-        "latitude": 412144655,
-        "longitude": -743949739
-    },
-    "name": "193-199 Wawayanda Road, Hewitt, NJ 07421, USA"
-}, {
-    "location": {
-        "latitude": 415736605,
-        "longitude": -742847522
-    },
-    "name": "406-496 Ward Avenue, Pine Bush, NY 12566, USA"
-}, {
-    "location": {
-        "latitude": 413843930,
-        "longitude": -740501726
-    },
-    "name": "162 Merrill Road, Highland Mills, NY 10930, USA"
-}, {
-    "location": {
-        "latitude": 410873075,
-        "longitude": -744459023
-    },
-    "name": "Clinton Road, West Milford, NJ 07480, USA"
-}, {
-    "location": {
-        "latitude": 412346009,
-        "longitude": -744026814
-    },
-    "name": "16 Old Brook Lane, Warwick, NY 10990, USA"
-}, {
-    "location": {
-        "latitude": 402948455,
-        "longitude": -747903913
-    },
-    "name": "3 Drake Lane, Pennington, NJ 08534, USA"
-}, {
-    "location": {
-        "latitude": 406337092,
-        "longitude": -740122226
-    },
-    "name": "6324 8th Avenue, Brooklyn, NY 11220, USA"
-}, {
-    "location": {
-        "latitude": 406421967,
-        "longitude": -747727624
-    },
-    "name": "1 Merck Access Road, Whitehouse Station, NJ 08889, USA"
-}, {
-    "location": {
-        "latitude": 416318082,
-        "longitude": -749677716
-    },
-    "name": "78-98 Schalck Road, Narrowsburg, NY 12764, USA"
-}, {
-    "location": {
-        "latitude": 415301720,
-        "longitude": -748416257
-    },
-    "name": "282 Lakeview Drive Road, Highland Lake, NY 12743, USA"
-}, {
-    "location": {
-        "latitude": 402647019,
-        "longitude": -747071791
-    },
-    "name": "330 Evelyn Avenue, Hamilton Township, NJ 08619, USA"
-}, {
-    "location": {
-        "latitude": 412567807,
-        "longitude": -741058078
-    },
-    "name": "New York State Reference Route 987E, Southfields, NY 10975, USA"
-}, {
-    "location": {
-        "latitude": 416855156,
-        "longitude": -744420597
-    },
-    "name": "103-271 Tempaloni Road, Ellenville, NY 12428, USA"
-}, {
-    "location": {
-        "latitude": 404663628,
-        "longitude": -744820157
-    },
-    "name": "1300 Airport Road, North Brunswick Township, NJ 08902, USA"
-}, {
-    "location": {
-        "latitude": 407113723,
-        "longitude": -749746483
-    },
-    "name": ""
-}, {
-    "location": {
-        "latitude": 402133926,
-        "longitude": -743613249
-    },
-    "name": ""
-}, {
-    "location": {
-        "latitude": 400273442,
-        "longitude": -741220915
-    },
-    "name": ""
-}, {
-    "location": {
-        "latitude": 411236786,
-        "longitude": -744070769
-    },
-    "name": ""
-}, {
-    "location": {
-        "latitude": 411633782,
-        "longitude": -746784970
-    },
-    "name": "211-225 Plains Road, Augusta, NJ 07822, USA"
-}, {
-    "location": {
-        "latitude": 415830701,
-        "longitude": -742952812
-    },
-    "name": ""
-}, {
-    "location": {
-        "latitude": 413447164,
-        "longitude": -748712898
-    },
-    "name": "165 Pedersen Ridge Road, Milford, PA 18337, USA"
-}, {
-    "location": {
-        "latitude": 405047245,
-        "longitude": -749800722
-    },
-    "name": "100-122 Locktown Road, Frenchtown, NJ 08825, USA"
-}, {
-    "location": {
-        "latitude": 418858923,
-        "longitude": -746156790
-    },
-    "name": ""
-}, {
-    "location": {
-        "latitude": 417951888,
-        "longitude": -748484944
-    },
-    "name": "650-652 Willi Hill Road, Swan Lake, NY 12783, USA"
-}, {
-    "location": {
-        "latitude": 407033786,
-        "longitude": -743977337
-    },
-    "name": "26 East 3rd Street, New Providence, NJ 07974, USA"
-}, {
-    "location": {
-        "latitude": 417548014,
-        "longitude": -740075041
-    },
-    "name": ""
-}, {
-    "location": {
-        "latitude": 410395868,
-        "longitude": -744972325
-    },
-    "name": ""
-}, {
-    "location": {
-        "latitude": 404615353,
-        "longitude": -745129803
-    },
-    "name": ""
-}, {
-    "location": {
-        "latitude": 406589790,
-        "longitude": -743560121
-    },
-    "name": "611 Lawrence Avenue, Westfield, NJ 07090, USA"
-}, {
-    "location": {
-        "latitude": 414653148,
-        "longitude": -740477477
-    },
-    "name": "18 Lannis Avenue, New Windsor, NY 12553, USA"
-}, {
-    "location": {
-        "latitude": 405957808,
-        "longitude": -743255336
-    },
-    "name": "82-104 Amherst Avenue, Colonia, NJ 07067, USA"
-}, {
-    "location": {
-        "latitude": 411733589,
-        "longitude": -741648093
-    },
-    "name": "170 Seven Lakes Drive, Sloatsburg, NY 10974, USA"
-}, {
-    "location": {
-        "latitude": 412676291,
-        "longitude": -742606606
-    },
-    "name": "1270 Lakes Road, Monroe, NY 10950, USA"
-}, {
-    "location": {
-        "latitude": 409224445,
-        "longitude": -748286738
-    },
-    "name": "509-535 Alphano Road, Great Meadows, NJ 07838, USA"
-}, {
-    "location": {
-        "latitude": 406523420,
-        "longitude": -742135517
-    },
-    "name": "652 Garden Street, Elizabeth, NJ 07202, USA"
-}, {
-    "location": {
-        "latitude": 401827388,
-        "longitude": -740294537
-    },
-    "name": "349 Sea Spray Court, Neptune City, NJ 07753, USA"
-}, {
-    "location": {
-        "latitude": 410564152,
-        "longitude": -743685054
-    },
-    "name": "13-17 Stanley Street, West Milford, NJ 07480, USA"
-}, {
-    "location": {
-        "latitude": 408472324,
-        "longitude": -740726046
-    },
-    "name": "47 Industrial Avenue, Teterboro, NJ 07608, USA"
-}, {
-    "location": {
-        "latitude": 412452168,
-        "longitude": -740214052
-    },
-    "name": "5 White Oak Lane, Stony Point, NY 10980, USA"
-}, {
-    "location": {
-        "latitude": 409146138,
-        "longitude": -746188906
-    },
-    "name": "Berkshire Valley Management Area Trail, Jefferson, NJ, USA"
-}, {
-    "location": {
-        "latitude": 404701380,
-        "longitude": -744781745
-    },
-    "name": "1007 Jersey Avenue, New Brunswick, NJ 08901, USA"
-}, {
-    "location": {
-        "latitude": 409642566,
-        "longitude": -746017679
-    },
-    "name": "6 East Emerald Isle Drive, Lake Hopatcong, NJ 07849, USA"
-}, {
-    "location": {
-        "latitude": 408031728,
-        "longitude": -748645385
-    },
-    "name": "1358-1474 New Jersey 57, Port Murray, NJ 07865, USA"
-}, {
-    "location": {
-        "latitude": 413700272,
-        "longitude": -742135189
-    },
-    "name": "367 Prospect Road, Chester, NY 10918, USA"
-}, {
-    "location": {
-        "latitude": 404310607,
-        "longitude": -740282632
-    },
-    "name": "10 Simon Lake Drive, Atlantic Highlands, NJ 07716, USA"
-}, {
-    "location": {
-        "latitude": 409319800,
-        "longitude": -746201391
-    },
-    "name": "11 Ward Street, Mount Arlington, NJ 07856, USA"
-}, {
-    "location": {
-        "latitude": 406685311,
-        "longitude": -742108603
-    },
-    "name": "300-398 Jefferson Avenue, Elizabeth, NJ 07201, USA"
-}, {
-    "location": {
-        "latitude": 419018117,
-        "longitude": -749142781
-    },
-    "name": "43 Dreher Road, Roscoe, NY 12776, USA"
-}, {
-    "location": {
-        "latitude": 412856162,
-        "longitude": -745148837
-    },
-    "name": "Swan Street, Pine Island, NY 10969, USA"
-}, {
-    "location": {
-        "latitude": 416560744,
-        "longitude": -746721964
-    },
-    "name": "66 Pleasantview Avenue, Monticello, NY 12701, USA"
-}, {
-    "location": {
-        "latitude": 405314270,
-        "longitude": -749836354
-    },
-    "name": ""
-}, {
-    "location": {
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-    },
-    "name": ""
-}, {
-    "location": {
-        "latitude": 415534177,
-        "longitude": -742900616
-    },
-    "name": "565 Winding Hills Road, Montgomery, NY 12549, USA"
-}, {
-    "location": {
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diff --git a/src/node/examples/route_guide_server.js b/src/node/examples/route_guide_server.js
deleted file mode 100644
index 465b32f54f..0000000000
--- a/src/node/examples/route_guide_server.js
+++ /dev/null
@@ -1,255 +0,0 @@
-/*
- *
- * 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.
- *
- */
-
-'use strict';
-
-var fs = require('fs');
-var parseArgs = require('minimist');
-var path = require('path');
-var _ = require('lodash');
-var grpc = require('..');
-var examples = grpc.load(__dirname + '/route_guide.proto').examples;
-
-var COORD_FACTOR = 1e7;
-
-/**
- * For simplicity, a point is a record type that looks like
- * {latitude: number, longitude: number}, and a feature is a record type that
- * looks like {name: string, location: point}. feature objects with name===''
- * are points with no feature.
- */
-
-/**
- * List of feature objects at points that have been requested so far.
- */
-var feature_list = [];
-
-/**
- * Get a feature object at the given point.
- * @param {point} point The point to check
- * @return {feature} The feature object at the point. Note that an empty name
- *     indicates no feature
- */
-function checkFeature(point) {
-  var feature;
-  // Check if there is already a feature object for the given point
-  for (var i = 0; i < feature_list.length; i++) {
-    feature = feature_list[i];
-    if (feature.location.latitude === point.latitude &&
-        feature.location.longitude === point.longitude) {
-      return feature;
-    }
-  }
-  var name = '';
-  feature = {
-    name: name,
-    location: point
-  };
-  return feature;
-}
-
-/**
- * getFeature request handler. Gets a request with a point, and responds with a
- * feature object indicating whether there is a feature at that point.
- * @param {EventEmitter} call Call object for the handler to process
- * @param {function(Error, feature)} callback Response callback
- */
-function getFeature(call, callback) {
-  callback(null, checkFeature(call.request));
-}
-
-/**
- * listFeatures request handler. Gets a request with two points, and responds
- * with a stream of all features in the bounding box defined by those points.
- * @param {Writable} call Writable stream for responses with an additional
- *     request property for the request value.
- */
-function listFeatures(call) {
-  var lo = call.request.lo;
-  var hi = call.request.hi;
-  var left = _.min([lo.longitude, hi.longitude]);
-  var right = _.max([lo.longitude, hi.longitude]);
-  var top = _.max([lo.latitude, hi.latitude]);
-  var bottom = _.min([lo.latitude, hi.latitude]);
-  // For each feature, check if it is in the given bounding box
-  _.each(feature_list, function(feature) {
-    if (feature.name === '') {
-      return;
-    }
-    if (feature.location.longitude >= left &&
-        feature.location.longitude <= right &&
-        feature.location.latitude >= bottom &&
-        feature.location.latitude <= top) {
-      call.write(feature);
-    }
-  });
-  call.end();
-}
-
-/**
- * Calculate the distance between two points using the "haversine" formula.
- * This code was taken from http://www.movable-type.co.uk/scripts/latlong.html.
- * @param start The starting point
- * @param end The end point
- * @return The distance between the points in meters
- */
-function getDistance(start, end) {
-  function toRadians(num) {
-    return num * Math.PI / 180;
-  }
-  var lat1 = start.latitude / COORD_FACTOR;
-  var lat2 = end.latitude / COORD_FACTOR;
-  var lon1 = start.longitude / COORD_FACTOR;
-  var lon2 = end.longitude / COORD_FACTOR;
-  var R = 6371000; // metres
-  var φ1 = toRadians(lat1);
-  var φ2 = toRadians(lat2);
-  var Δφ = toRadians(lat2-lat1);
-  var Δλ = toRadians(lon2-lon1);
-
-  var a = Math.sin(Δφ/2) * Math.sin(Δφ/2) +
-      Math.cos(φ1) * Math.cos(φ2) *
-      Math.sin(Δλ/2) * Math.sin(Δλ/2);
-  var c = 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1-a));
-
-  return R * c;
-}
-
-/**
- * recordRoute handler. Gets a stream of points, and responds with statistics
- * about the "trip": number of points, number of known features visited, total
- * distance traveled, and total time spent.
- * @param {Readable} call The request point stream.
- * @param {function(Error, routeSummary)} callback The callback to pass the
- *     response to
- */
-function recordRoute(call, callback) {
-  var point_count = 0;
-  var feature_count = 0;
-  var distance = 0;
-  var previous = null;
-  // Start a timer
-  var start_time = process.hrtime();
-  call.on('data', function(point) {
-    point_count += 1;
-    if (checkFeature(point).name !== '') {
-      feature_count += 1;
-    }
-    /* For each point after the first, add the incremental distance from the
-     * previous point to the total distance value */
-    if (previous !== null) {
-      distance += getDistance(previous, point);
-    }
-    previous = point;
-  });
-  call.on('end', function() {
-    callback(null, {
-      point_count: point_count,
-      feature_count: feature_count,
-      // Cast the distance to an integer
-      distance: Math.floor(distance),
-      // End the timer
-      elapsed_time: process.hrtime(start_time)[0]
-    });
-  });
-}
-
-var route_notes = {};
-
-/**
- * Turn the point into a dictionary key.
- * @param {point} point The point to use
- * @return {string} The key for an object
- */
-function pointKey(point) {
-  return point.latitude + ' ' + point.longitude;
-}
-
-/**
- * routeChat handler. Receives a stream of message/location pairs, and responds
- * with a stream of all previous messages at each of those locations.
- * @param {Duplex} call The stream for incoming and outgoing messages
- */
-function routeChat(call) {
-  call.on('data', function(note) {
-    var key = pointKey(note.location);
-    /* For each note sent, respond with all previous notes that correspond to
-     * the same point */
-    if (route_notes.hasOwnProperty(key)) {
-      _.each(route_notes[key], function(note) {
-        call.write(note);
-      });
-    } else {
-      route_notes[key] = [];
-    }
-    // Then add the new note to the list
-    route_notes[key].push(JSON.parse(JSON.stringify(note)));
-  });
-  call.on('end', function() {
-    call.end();
-  });
-}
-
-/**
- * Get a new server with the handler functions in this file bound to the methods
- * it serves.
- * @return {Server} The new server object
- */
-function getServer() {
-  var server = new grpc.Server();
-  server.addProtoService(examples.RouteGuide.service, {
-    getFeature: getFeature,
-    listFeatures: listFeatures,
-    recordRoute: recordRoute,
-    routeChat: routeChat
-  });
-  return server;
-}
-
-if (require.main === module) {
-  // If this is run as a script, start a server on an unused port
-  var routeServer = getServer();
-  routeServer.bind('0.0.0.0:50051', grpc.ServerCredentials.createInsecure());
-  var argv = parseArgs(process.argv, {
-    string: 'db_path'
-  });
-  fs.readFile(path.resolve(argv.db_path), function(err, data) {
-    if (err) {
-      throw err;
-    }
-    feature_list = JSON.parse(data);
-    routeServer.start();
-  });
-}
-
-exports.getServer = getServer;