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index.js
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index.js
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require('dotenv').config();
var express = require('express');
var fs = require('fs');
var slugify = require('slugify');
// cookies see https://github.com/expressjs/cookie-parser
var cookieParser = require('cookie-parser');
// var cookieSession = require('cookie-session');
var bodyParser = require('body-parser');
var session = require('express-session');
var multer = require('multer');
var util = require('util');
var mime = require('mime');
var compression = require('compression');
var compressible = require('compressible');
var cache = require('apicache').middleware;
var path = require("path");
var temp_dir = path.join(process.cwd(), 'temp/');
var uploads_dir = path.join(process.cwd(), 'uploads/');
// require('ssl-root-cas').inject().addFile('./server.crt');
var API_OFF = false;
// This should remain disabled for most people, this is enabled for our production environment
var rateLimitingEnabled = process.env.RATE_LIMITING_ENABLED || false;
var RateLimit, ExpressMiddleware, redis, rateLimiter, options, limitMiddleware;
if (rateLimitingEnabled) {
RateLimit = require('ratelimit.js').RateLimit;
ExpressMiddleware = require('ratelimit.js').ExpressMiddleware;
redis = require('redis');
rateLimiter = new RateLimit(redis.createClient(process.env.REDIS_URL), [{interval: parseInt(process.env.RATE_LIMITING_INTERVAL), limit: parseInt(process.env.RATE_LIMITING_REQUESTS)}]);
options = {
ignoreRedisErrors: true // defaults to false
};
limitMiddleware = new ExpressMiddleware(rateLimiter, options);
}
if (!fs.existsSync(temp_dir)) {
fs.mkdirSync(temp_dir);
}
if (!fs.existsSync(uploads_dir)) {
fs.mkdirSync(uploads_dir);
}
var storage = multer.memoryStorage();
var upload = multer({ storage: storage });
//local modules (JS files)
// var utils = require('./utils');
var SentimentAnalysis = require('./lib/sentiment-analysis.js');
var EntityAnalysis = require('./lib/entity-analysis.js');
var LanguageAnalysis = require('./lib/language-analysis.js');
var ImageAnalysis = require('./lib/image-analysis.js');
var NXAPIPacks = require('./lib/api-connector/api-connector.js');
createEJSTemplateDataDictionary = function (req, res) {
// Set a body class hook to append to <body>
var localBodyClass = '';
if(req.originalUrl === '/') {
localBodyClass = 'home';
} else {
localBodyClass = slugify(req.originalUrl.replace(/\//g, ' '));
}
return { session: req.session, activeRoute: req.activeRoute, recaptchaSiteKey: process.env.RECAPTCHA_SITE_KEY, bodyClass: localBodyClass };
};
//storage
// var session = require('express-session');
// var RedisStore = require('connect-redis')(session);
var app = express();
// var privateKey = fs.readFileSync('./key.pem', 'utf8');
// var certificate = fs.readFileSync('./server.crt', 'utf8');
// var credentials = {key: privateKey, cert: certificate};
app.set('port', (process.env.PORT || 5000));
var cookiesSecretKey = (process.env.COOKIES_SECRET_KEY || 'cookiesSecret');
app.use(cookieParser(cookiesSecretKey));
//for now use cookie session (in-memory)
app.use(session({ secret: cookiesSecretKey }));
//
// app.use(session({
// store: new RedisStore(options),
// secret: 'secretdata'
// }));
app.use(bodyParser.urlencoded({ limit:'2mb', extended: true })); // for parsing
app.use(express.static(__dirname + '/public'));
// views is directory for all template files
app.set('views', __dirname + '/views');
app.set('view engine', 'ejs');
app.use(compression());
//add current route to the request so templates can extract it
app.use(function(req, res, next) {
req.activeRoute = req.path.split('/')[1] // [0] will be empty since routes start with '/'
next();
});
app.use(function (req, res, next) {
if (req.originalUrl.substring(0,4) === '/api' && API_OFF) {
return {success: false};
}
next();
});
if (limitMiddleware) {
app.use('/api', limitMiddleware.middleware(function(req, res, next) {
res.status(429).json({message: 'rate limit exceeded'});
}));
}
var markdownCache = Object.create(null);
var SectionPageProcessor = require('./lib/section-page-processor.js');
//docs route - use markdown files as content source for pages
app.get('/docs/*', function(req, res) {
var dataDict = createEJSTemplateDataDictionary(req, res);
SectionPageProcessor.processMarkdownPage(dataDict, req, res, markdownCache);
});
app.get('/contact', function(req, res) {
res.render('pages/contact', createEJSTemplateDataDictionary(req, res));
});
app.get('/', function(req, res) {
res.render('pages/index', createEJSTemplateDataDictionary(req, res));
});
var apiAddCompletion = function(apiPack, success, message) {
console.log((success?"OK: ":"ERROR: ")+message);
}
NXAPIPacks.connector.setAPIRoot('/api');
NXAPIPacks.connector.setApp(app);
//on examples, if displayText is not included the value will be used
/*
var entityAnalysisExamples = [
{ "value": "George lives in New York City and his car is a Jaguar XL. George also owns a copy of the Guernica by Picasso. He likes Halloween."},
{ "value": "IBM and Google are companies."},
{ "value": "It is better to commute to San Francisco using BART."}
];
var entityAnalysisServiceInfo
{
id: "entity-analysis",
name : "Phrase Entity Analysis",
description : "Extract entities from sentences or paragraphs.",
testSamples: entityAnalysisExamples
}
*/
function loadServiceInfo(parameters) {
var serviceId = parameters.serviceId;
var loadSamples = parameters.loadSamples;
var infoPath = path.join(process.cwd(), parameters.topLevelFolder, serviceId, serviceId+"_info.json");
var info = require(infoPath);
if ((info != undefined) && loadSamples) {
var samplesPath = path.join(process.cwd(), parameters.topLevelFolder, serviceId, serviceId+"_samples.json");
var samples = require(samplesPath);
if (samples != undefined) {
info.testSamples = samples;
}
}
return info;
}
function loadApi(pathToAPIJSONFile) {
console.log("Loading api info from "+pathToAPIJSONFile);
var apiInfo = require(pathToAPIJSONFile);
if (apiInfo != undefined) {
NXAPIPacks.connector.addAPI(apiInfo);
}
else {
console.log("Error loading API info from "+pathToAPIJSONFile);
}
}
function loadAllAPIs(rootPath) {
var folderPath = path.join(process.cwd(), rootPath);
var files = fs.readdirSync(folderPath);
files.forEach(file => {
// console.log(file);
var filePath = path.join(folderPath, file);
loadApi(filePath);
});
}
loadAllAPIs('public/data/services/apis');
var languageAnalysisCommonServiceInfo = loadServiceInfo({serviceId: 'language-analysis', topLevelFolder: 'public/data/services', loadSamples: true});
var languageTranslationCommonServiceInfo = loadServiceInfo({serviceId: 'language-translation', topLevelFolder: 'public/data/services', loadSamples: true});
var entityAnalysisCommonServiceInfo = loadServiceInfo({serviceId: 'entity-analysis', topLevelFolder: 'public/data/services', loadSamples: true});
var sentimentAnalysisCommonServiceInfo = loadServiceInfo({serviceId: 'sentiment-analysis', topLevelFolder: 'public/data/services', loadSamples: true});
var imageAnalysisCommonServiceInfo = loadServiceInfo({serviceId: 'image-analysis', topLevelFolder: 'public/data/services', loadSamples: true});
NXAPIPacks.connector
.apiForId("js-sentimentjs")
.addService(sentimentAnalysisCommonServiceInfo, SentimentAnalysis.sentimentJSAPIPack, apiAddCompletion);
NXAPIPacks.connector
.apiForId("js-sentimental")
.addService(sentimentAnalysisCommonServiceInfo, SentimentAnalysis.sentimentalJSAPIPack, apiAddCompletion);
var ibmAPI = NXAPIPacks.connector.apiForId("ibm-alchemy");
ibmAPI.addService(entityAnalysisCommonServiceInfo, EntityAnalysis.alchemyEntityAPIPack, apiAddCompletion);
ibmAPI.addService(sentimentAnalysisCommonServiceInfo, SentimentAnalysis.alchemySentimentAPIPack, apiAddCompletion);
ibmAPI.addService(languageAnalysisCommonServiceInfo, LanguageAnalysis.alchemyLangAnalysisAPIPack, apiAddCompletion);
var ibmWatsonAPI = NXAPIPacks.connector.apiForId("ibm-watson");
ibmWatsonAPI.addService(sentimentAnalysisCommonServiceInfo, SentimentAnalysis.ibmToneAnalysisAPIPack, apiAddCompletion);
var googleAPI = NXAPIPacks.connector.apiForId("google-cloud");
googleAPI.addService(entityAnalysisCommonServiceInfo, EntityAnalysis.googleEntityAnalysisAPIPack, apiAddCompletion);
googleAPI.addService(sentimentAnalysisCommonServiceInfo, SentimentAnalysis.googleSentimentAnalysisAPIPack, apiAddCompletion);
googleAPI.addService(languageAnalysisCommonServiceInfo, LanguageAnalysis.googleLangAnalysisAPIPack, apiAddCompletion);
googleAPI.addService(imageAnalysisCommonServiceInfo, ImageAnalysis.googleImageAnalysisAPIPack, apiAddCompletion);
googleAPI.addService(languageTranslationCommonServiceInfo, LanguageAnalysis.googleLangTranslationAPIPack, apiAddCompletion);
var amazonAPI = NXAPIPacks.connector.apiForId("amazon-ai");
amazonAPI.addService(imageAnalysisCommonServiceInfo, ImageAnalysis.amazonImageAnalysisAPIPack, apiAddCompletion);
var clarifaiAPI = NXAPIPacks.connector.apiForId("clarifai");
clarifaiAPI.addService(imageAnalysisCommonServiceInfo, ImageAnalysis.clarifaiImageAnalysisAPIPack, apiAddCompletion);
var msAzureAPI = NXAPIPacks.connector.apiForId("ms-azure");
msAzureAPI.addService(sentimentAnalysisCommonServiceInfo, SentimentAnalysis.msAzureSentimentAnalysisAPIPack, apiAddCompletion);
msAzureAPI.addService(entityAnalysisCommonServiceInfo, EntityAnalysis.msAzureEntityAnalysisAPIPack, apiAddCompletion);
msAzureAPI.addService(languageAnalysisCommonServiceInfo, LanguageAnalysis.msAzureLangAnalysisAPIPack, apiAddCompletion);
msAzureAPI.addService(imageAnalysisCommonServiceInfo, ImageAnalysis.msAzureImageAnalysisAPIPack, apiAddCompletion);
var baiduAPI = NXAPIPacks.connector.apiForId("baidu");
baiduAPI.addService(languageTranslationCommonServiceInfo, LanguageAnalysis.baiduLangTranslationAPIPack, apiAddCompletion);
var recastAIAPI = NXAPIPacks.connector.apiForId("recast-ai");
recastAIAPI.addService(entityAnalysisCommonServiceInfo, EntityAnalysis.recastaiEntityAPIPack, apiAddCompletion);
var apiAIAPI = NXAPIPacks.connector.apiForId("api-ai");
apiAIAPI.addService(entityAnalysisCommonServiceInfo, EntityAnalysis.apiaiEntityAPIPack, apiAddCompletion);
var image2json = require('./lib/nx/image2json.js');
function registerGet(expressApp, urlPath, serviceId, resultPagePath) {
//path would end up being something like '/test/phrase/sentiment-analysis',
const requestPath = path.join(urlPath, serviceId);
//something like 'pages/data-analysis' to be used in the render() call
const resultPath = resultPagePath;
const sid = serviceId;
const currentApp = expressApp;
//eg app.get('/test/phrase/sentiment-analysis',
currentApp.get(requestPath,
function (req, res) {
var dataDict = createEJSTemplateDataDictionary(req, res);
dataDict.apiServiceInfo = {id: "no_id", name: "No info", description: "no description.", contentType: "none", xtra: {"type":"none"}, testSamples: []};
// dataDict.apis = JSON.stringify();
var apis = NXAPIPacks.connector.getApisForServiceType(sid); //eg sid = 'sentiment-analysis'
dataDict.apiEndpoints = [];
if (apis.length > 0) {
//get sample text from the first element
dataDict.apiServiceInfo = apis[0].serviceInfo;
dataDict.apiContentType = dataDict.apiServiceInfo.contentType;
dataDict.xtra = dataDict.apiServiceInfo.xtra;
if (dataDict.apiServiceInfo.contentType == 'image') {
dataDict.apiServiceInfo.sampleImages = [];
for (i in dataDict.apiServiceInfo.testSamples) {
var imgPath = path.join(process.cwd(), dataDict.apiServiceInfo.testSamples[i].value);
var jsonInfo = image2json.NXImage.jsonImageFromFile(imgPath);
dataDict.apiServiceInfo.sampleImages.push(jsonInfo);
}
}
for (i in apis) {
var api = apis[i];
var clientPack = api.createClientPack();
dataDict.apiEndpoints.push(clientPack);
}
}
res.render(resultPath, dataDict);
});
};
registerGet(app, "/test/phrase", "sentiment-analysis", "pages/data-analysis");
registerGet(app, "/test/phrase", "entity-analysis", "pages/data-analysis");
registerGet(app, "/test/phrase", "language-analysis", "pages/data-analysis");
registerGet(app, "/test/image", "image-analysis", "pages/data-analysis");
registerGet(app, "/test/phrase", "language-translation", "pages/data-analysis");
app.listen(app.get('port'), function() {
console.log('Node app is running on port', app.get('port'));
});
//The 404 Route (ALWAYS Keep this as the last route)
app.get('*', function(req, res){
res.render('pages/error', createEJSTemplateDataDictionary(req, res));
});