mirror of https://github.com/grpc/grpc-node.git
91 lines
2.9 KiB
JavaScript
91 lines
2.9 KiB
JavaScript
/*
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*
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* Copyright 2015, Google Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following disclaimer
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* in the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Google Inc. nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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'use strict';
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var _ = require('underscore');
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var grpc = require('..');
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var examples = grpc.load(__dirname + '/stock.proto').examples;
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var StockServer = grpc.buildServer([examples.Stock.service]);
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function getLastTradePrice(call, callback) {
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callback(null, {symbol: call.request.symbol, price: 88});
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}
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function watchFutureTrades(call) {
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for (var i = 0; i < call.request.num_trades_to_watch; i++) {
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call.write({price: 88.00 + i * 10.00});
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}
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call.end();
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}
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function getHighestTradePrice(call, callback) {
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var trades = [];
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call.on('data', function(data) {
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trades.push({symbol: data.symbol, price: _.random(0, 100)});
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});
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call.on('end', function() {
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if(_.isEmpty(trades)) {
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callback(null, {});
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} else {
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callback(null, _.max(trades, function(trade){return trade.price;}));
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}
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});
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}
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function getLastTradePriceMultiple(call) {
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call.on('data', function(data) {
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call.write({price: 88});
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});
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call.on('end', function() {
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call.end();
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});
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}
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var stockServer = new StockServer({
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'examples.Stock' : {
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getLastTradePrice: getLastTradePrice,
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getLastTradePriceMultiple: getLastTradePriceMultiple,
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watchFutureTrades: watchFutureTrades,
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getHighestTradePrice: getHighestTradePrice
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}
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});
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if (require.main === module) {
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stockServer.bind('0.0.0.0:8080');
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stockServer.listen();
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}
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module.exports = stockServer;
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