| /* |
| * |
| * 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 _ = require('lodash'); |
| var grpc = require('..'); |
| var examples = grpc.load(__dirname + '/stock.proto').examples; |
| |
| function getLastTradePrice(call, callback) { |
| callback(null, {symbol: call.request.symbol, price: 88}); |
| } |
| |
| function watchFutureTrades(call) { |
| for (var i = 0; i < call.request.num_trades_to_watch; i++) { |
| call.write({price: 88.00 + i * 10.00}); |
| } |
| call.end(); |
| } |
| |
| function getHighestTradePrice(call, callback) { |
| var trades = []; |
| call.on('data', function(data) { |
| trades.push({symbol: data.symbol, price: _.random(0, 100)}); |
| }); |
| call.on('end', function() { |
| if(_.isEmpty(trades)) { |
| callback(null, {}); |
| } else { |
| callback(null, _.max(trades, function(trade){return trade.price;})); |
| } |
| }); |
| } |
| |
| function getLastTradePriceMultiple(call) { |
| call.on('data', function(data) { |
| call.write({price: 88}); |
| }); |
| call.on('end', function() { |
| call.end(); |
| }); |
| } |
| |
| var stockServer = new grpc.Server(); |
| stockServer.addProtoService(examples.Stock.service, { |
| getLastTradePrice: getLastTradePrice, |
| getLastTradePriceMultiple: getLastTradePriceMultiple, |
| watchFutureTrades: watchFutureTrades, |
| getHighestTradePrice: getHighestTradePrice |
| }); |
| |
| if (require.main === module) { |
| stockServer.bind('0.0.0.0:50051', grpc.ServerCredentials.createInsecure()); |
| stockServer.start(); |
| } |
| |
| module.exports = stockServer; |