diff --git a/src/node/examples/route_guide.proto b/src/node/examples/route_guide.proto deleted file mode 100644 index fceb632a97d..00000000000 --- 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 647f3ffabad..00000000000 --- 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 9d6a980ab7d..00000000000 --- 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, - 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"location": { - "latitude": 413069058, - "longitude": -744597778 - }, - "name": "261 Van Sickle Road, Goshen, NY 10924, USA" -}, { - "location": { - "latitude": 418465462, - "longitude": -746859398 - }, - "name": "" -}, { - "location": { - "latitude": 411733222, - "longitude": -744228360 - }, - "name": "" -}, { - "location": { - "latitude": 410248224, - "longitude": -747127767 - }, - "name": "3 Hasta Way, Newton, NJ 07860, USA" -}] diff --git a/src/node/examples/route_guide_server.js b/src/node/examples/route_guide_server.js deleted file mode 100644 index 465b32f54f4..00000000000 --- 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;