diff --git a/src/node/examples/stock.proto b/src/node/examples/stock.proto new file mode 100644 index 0000000000000000000000000000000000000000..526b71e0219d382d02698f6b1899f2e3bebc401c --- /dev/null +++ b/src/node/examples/stock.proto @@ -0,0 +1,33 @@ +syntax = "proto3"; + +package examples; + +// Protocol type definitions +message StockRequest { + optional string symbol = 1; + optional int32 num_trades_to_watch = 2 [default=0]; +}; + +message StockReply { + optional float price = 1; + optional string symbol = 2; +}; + + +// Interface exported by the server +service Stock { + // Simple blocking RPC + rpc GetLastTradePrice(StockRequest) returns (StockReply) { + }; + // Bidirectional streaming RPC + rpc GetLastTradePriceMultiple(stream StockRequest) returns + (stream StockReply) { + }; + // Unidirectional server-to-client streaming RPC + rpc WatchFutureTrades(StockRequest) returns (stream StockReply) { + }; + // Unidirectional client-to-server streaming RPC + rpc GetHighestTradePrice(stream StockRequest) returns (StockReply) { + }; + +}; \ No newline at end of file diff --git a/src/node/examples/stock_client.js b/src/node/examples/stock_client.js new file mode 100644 index 0000000000000000000000000000000000000000..8e99090f350043840994dd030f23a3c4812db861 --- /dev/null +++ b/src/node/examples/stock_client.js @@ -0,0 +1,43 @@ +/* + * + * 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. + * + */ + +var grpc = require('..'); +var examples = grpc.load(__dirname + '/stock.proto').examples; + +/** + * This exports a client constructor for the Stock service. The usage looks like + * + * var StockClient = require('stock_client.js'); + * var stockClient = new StockClient(server_address); + */ +module.exports = examples.Stock; diff --git a/src/node/examples/stock_server.js b/src/node/examples/stock_server.js new file mode 100644 index 0000000000000000000000000000000000000000..c188181b7790716b2b49af0b4c1cae5877396445 --- /dev/null +++ b/src/node/examples/stock_server.js @@ -0,0 +1,83 @@ +/* + * + * 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. + * + */ + +var _ = require('underscore'); +var grpc = require('..'); +var examples = grpc.load(__dirname + '/stock.proto').examples; + +var StockServer = grpc.makeServerConstructor([examples.Stock.service]); + +function getLastTradePrice(call, callback) { + callback(null, {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 StockServer({ + 'examples.Stock' : { + getLastTradePrice: getLastTradePrice, + getLastTradePriceMultiple: getLastTradePriceMultiple, + watchFutureTrades: watchFutureTrades, + getHighestTradePrice: getHighestTradePrice + } +}); + +exports.module = stockServer;