Files
Superalgos/server.js
T

1034 lines
35 KiB
JavaScript

require('dotenv').config()
/* These 2 are global variables, that is why they do not have a let or var */
CONSOLE_LOG = true
CONSOLE_ERROR_LOG = true
LOG_FILE_CONTENT = false
if (CONSOLE_LOG === true) { console.log('[INFO] server -> Node Server Starting.') }
let serverConfig
global.DEFAULT_OK_RESPONSE = {
result: 'Ok',
message: 'Operation Succeeded'
}
global.DEFAULT_FAIL_RESPONSE = {
result: 'Fail',
message: 'Operation Failed'
}
global.DEFAULT_RETRY_RESPONSE = {
result: 'Retry',
message: 'Retry Later'
}
global.CUSTOM_OK_RESPONSE = {
result: 'Ok, but check Message',
message: 'Custom Message'
}
global.CUSTOM_FAIL_RESPONSE = {
result: 'Fail Because',
message: 'Custom Message'
}
let storageData = new Map()
let botScripts // This module is the one which grabs user bots scrips from the storage, and browserifys them.
let ecosystem
let ecosystemObject
// 'use strict';
let http = require('http')
let port = process.env.PORT || 1337
let isHttpServerStarted = false
const AZURE_STORAGE = require('./Server/AzureStorage')
const MINIO_STORAGE = require('./Server/MinioStorage')
switch (process.env.STORAGE_PROVIDER) {
case 'Azure': {
storage = AZURE_STORAGE.newAzureStorage();
break;
}
case 'Minio': {
storage = MINIO_STORAGE.newMinioStorage();
break;
}
default: {
console.log('[ERROR] server -> Storage Provider not supported -> process.env.STORAGE_PROVIDER = ' + process.env.STORAGE_PROVIDER)
return;
}
}
let sessionManager // This module have all authenticated active sessions.
let storageAccessManager // This module manages the SAS for user to access the cloud storage from the browser.
initialize()
function initialize () {
if (CONSOLE_LOG === true) { console.log('[INFO] server -> initialize -> Entering function.') }
/* Clear all cached information. */
storageData = new Map()
const CONFIG_READER = require('./Server/ConfigReader')
let configReader = CONFIG_READER.newConfigReader()
configReader.initialize(ecosystem, ecosystemObject, storageData, storage, onInitialized)
function onInitialized (err, pServerConfig) {
if (err.result !== global.DEFAULT_OK_RESPONSE.result) {
console.log('[ERROR] server -> initialize -> onInitialized -> err.message = ' + err.message)
console.log('[ERROR] server -> initialize -> onInitialized -> Terminating Execution. ')
return
}
serverConfig = pServerConfig
configReader.loadConfigs(onConfigsLoaded)
function onConfigsLoaded (err, pEcosystem, pEcosystemObject) {
if (err.result !== global.DEFAULT_OK_RESPONSE.result) {
console.log('[ERROR] server -> initialize -> onInitialized -> onConfigsLoaded -> err.message = ' + err.message)
console.log('[ERROR] server -> initialize -> onInitialized -> onConfigsLoaded -> Terminating Execution. ')
return
}
ecosystem = pEcosystem
ecosystemObject = pEcosystemObject
storage.initialize(storageData, serverConfig)
const SESSION_MANAGER = require('./Server/SessionManager')
sessionManager = SESSION_MANAGER.newSessionManager()
sessionManager.initialize(serverConfig, storage, onInitialized)
function onInitialized () {
const STORAGE_ACCESS_MANAGER = require('./Server/AzureStorageAccessManager')
storageAccessManager = STORAGE_ACCESS_MANAGER.newAzureStorageAccessManager()
storageAccessManager.initialize(serverConfig, onInitialized)
function onInitialized () {
const BOT_SCRIPTS = require('./Server/BotsScripts')
botScripts = BOT_SCRIPTS.newBotScripts()
botScripts.initialize(serverConfig, storage, onInitialized)
function onInitialized () {
startHtttpServer()
}
}
}
}
}
}
function startHtttpServer () {
if (CONSOLE_LOG === true) { console.log('[INFO] server -> startHtttpServer -> Entering function.') }
try {
if (isHttpServerStarted === false) {
gWebServer = http.createServer(onBrowserRequest).listen(port)
isHttpServerStarted = true
}
} catch (err) {
console.log('[ERROR] server -> startHtttpServer -> Error = ' + err)
}
}
function onBrowserRequest (request, response) {
if (CONSOLE_LOG === true) { console.log('[INFO] server -> onBrowserRequest -> Entering function.') }
if (CONSOLE_LOG === true && request.url.indexOf('NO-LOG') === -1) { console.log('[INFO] server -> onBrowserRequest -> request.url = ' + request.url) }
let htmlResponse
let requestParameters = request.url.split('/')
if (requestParameters[1].indexOf('index.html') >= 0) {
/*
We use this to solve the problem when someone is arriving to the site with a sessionToken in the queryString. We extract here that
token, that will be sent later embedded into the HTML code, so that it can enter into the stardard circuit where any site can put
the sessionToken into their HTML code and from there the Browser app will log the user in.
*/
let queryString = requestParameters[1].split('?')
requestParameters[1] = ''
requestParameters[2] = queryString[1]
homePage()
return
}
requestParameters = request.url.split('?') // Remove version information
requestParameters = requestParameters[0].split('/')
switch (requestParameters[1]) {
case serverConfig.reinitializeCommand: {
initialize()
respondWithContent('Node JS Server Reinitilized.', response)
}
break
case 'MQService':
{
let filePath = "./node_modules/@superalgos/mqservice/orderLifeCicle/webDependency.js"
respondWithFile(filePath, response)
break;
}
case 'FileService':
{
processPost(request, response, onPostReceived)
function onPostReceived(pData) {
let request = JSON.parse(pData);
storage.readData(undefined, request.path, request.conatinerName, false, onReady)
function onReady(err, pFileContent) {
let responseToClient = {
err: err,
text: pFileContent
};
respondWithContent(JSON.stringify(responseToClient), response);
}
}
break;
}
case 'Plotter.js':
{
/*
This file is build dinamically because it has the code to instantiate the different configured Plotters. The instantiation code
will be generated using a pre-defined string with replacement points. We will go through the configuration file to learn
about all the possible plotters the system can load.
*/
let fs = require('fs')
try {
let fileName = 'Plotter.js'
fs.readFile(fileName, onFileRead)
function onFileRead (err, file) {
if (CONSOLE_LOG === true) { console.log('[INFO] server -> onBrowserRequest -> onFileRead -> Entering function.') }
try {
let fileContent = file.toString()
/* This is the string we will use to insert into the Plotters.js script. */
let caseString = '' +
' case "@newFunctionName@":' + '\n' +
' {' + '\n' +
' plotter = newPlotterName();' + '\n' +
' }' + '\n' +
' break;' + '\n' + '\n'
let devTeams = ecosystemObject.devTeams
let hosts = ecosystemObject.hosts
addToFileContent(devTeams)
addToFileContent(hosts)
function addToFileContent (pDevTeamsOrHosts) {
if (CONSOLE_LOG === true) { console.log('[INFO] server -> onBrowserRequest -> onFileRead -> addToFileContent -> Entering function.') }
for (let i = 0; i < pDevTeamsOrHosts.length; i++) {
let devTeam = pDevTeamsOrHosts[i]
for (let j = 0; j < devTeam.plotters.length; j++) {
let plotter = devTeam.plotters[j]
for (let k = 0; k < plotter.modules.length; k++) {
let module = plotter.modules[k]
let caseStringCopy = caseString
let newFunctionName = devTeam.codeName + plotter.codeName + module.codeName
newFunctionName = newFunctionName.replace(/-/g, '')
let stringToInsert
stringToInsert = caseStringCopy.replace('@newFunctionName@', newFunctionName)
stringToInsert = stringToInsert.replace('newPlotterName', 'new' + newFunctionName)
let firstPart = fileContent.substring(0, fileContent.indexOf('// Cases'))
let secondPart = fileContent.substring(fileContent.indexOf('// Cases'))
fileContent = firstPart + stringToInsert + secondPart
}
}
}
}
respondWithContent(fileContent, response)
} catch (err) {
console.log('[ERROR] server -> onBrowserRequest -> File Not Found: ' + fileName + ' or Error = ' + err)
}
}
} catch (err) {
console.log(err)
}
}
break
case 'PlotterPanel.js':
{
/*
This file is build dinamically because it has the code to instantiate the different configured Plotter Panels. The instantiation code
will be generated using a pre-defined string with replacement points. We will go through the configuration file to learn
about all the possible plotters panels the system can load.
*/
let fs = require('fs')
try {
let fileName = 'PlotterPanel.js'
fs.readFile(fileName, onFileRead)
function onFileRead (err, file) {
if (CONSOLE_LOG === true) { console.log('[INFO] server -> onBrowserRequest -> onFileRead -> Entering function.') }
try {
let fileContent = file.toString()
/* This is the string we will use to insert into the Plotters.js script. */
let caseString = '' +
' case "@newFunctionName@":' + '\n' +
' {' + '\n' +
' plotterPanel = newPlotterPanelName();' + '\n' +
' }' + '\n' +
' break;' + '\n' + '\n'
let devTeams = ecosystemObject.devTeams
let hosts = ecosystemObject.hosts
addToFileContent(devTeams)
addToFileContent(hosts)
function addToFileContent (pDevTeamsOrHosts) {
if (CONSOLE_LOG === true) { console.log('[INFO] server -> onBrowserRequest -> onFileRead -> addToFileContent -> Entering function.') }
for (let i = 0; i < pDevTeamsOrHosts.length; i++) {
let devTeam = pDevTeamsOrHosts[i]
for (let j = 0; j < devTeam.plotters.length; j++) {
let plotter = devTeam.plotters[j]
for (let k = 0; k < plotter.modules.length; k++) {
let module = plotter.modules[k]
for (let l = 0; l < module.panels.length; l++) {
let panel = module.panels[l]
let caseStringCopy = caseString
let newFunctionName = devTeam.codeName + plotter.codeName + module.codeName + panel.codeName
newFunctionName = newFunctionName.replace(/-/g, '')
let stringToInsert
stringToInsert = caseStringCopy.replace('@newFunctionName@', newFunctionName)
stringToInsert = stringToInsert.replace('newPlotterPanelName', 'new' + newFunctionName)
let firstPart = fileContent.substring(0, fileContent.indexOf('// Cases'))
let secondPart = fileContent.substring(fileContent.indexOf('// Cases'))
fileContent = firstPart + stringToInsert + secondPart
}
}
}
}
}
respondWithContent(fileContent, response)
} catch (err) {
console.log('[ERROR] server -> onBrowserRequest -> File Not Found: ' + fileName + ' or Error = ' + err)
}
}
} catch (err) {
console.log(err)
}
}
break
case 'Ecosystem.js':
{
/*
At this page we need to insert the configuration file for the whole system that we assamble before at the begining of this module
execution. So what we do is to load a template file with an insertion point where the configuration json is injected in.
*/
let fs = require('fs')
try {
let fileName = 'Ecosystem.js'
fs.readFile(fileName, onFileRead)
function onFileRead (err, file) {
if (CONSOLE_LOG === true) { console.log('[INFO] server -> onBrowserRequest -> onFileRead -> Entering function.') }
try {
let fileContent = file.toString()
let insertContent = JSON.stringify(ecosystemObject)
fileContent = fileContent.replace('"@ecosystem.json@"', insertContent)
respondWithContent(fileContent, response)
} catch (err) {
console.log('[ERROR] server -> onBrowserRequest -> File Not Found: ' + fileName + ' or Error = ' + err)
}
}
} catch (err) {
console.log(err)
}
}
break
case 'CloudAppWrapper': // This means the BrowserRun folder.
{
let filePath = requestParameters[2]
if (requestParameters[3] !== undefined) {
filePath = filePath + '/' + requestParameters[3]
}
if (requestParameters[4] !== undefined) {
filePath = filePath + '/' + requestParameters[4]
}
respondWithFile(serverConfig.pathToCloudAppWrapperComponent + '/' + filePath, response)
}
break
case 'Images': // This means the Scripts folder.
{
let path = './Images/' + requestParameters[2]
if (requestParameters[3] !== undefined) {
path = path + '/' + requestParameters[3]
}
if (requestParameters[4] !== undefined) {
path = path + '/' + requestParameters[4]
}
if (requestParameters[5] !== undefined) {
path = path + '/' + requestParameters[5]
}
path = unescape(path)
respondWithImage(path, response)
}
break
case 'favicon.ico': // This means the Scripts folder.
{
respondWithImage('./Images/' + 'favicon.ico', response)
}
break
case 'CockpitSpace': // This means the CockpitSpace folder.
{
respondWithFile(serverConfig.pathToCanvasApp + '/CockpitSpace/' + requestParameters[2], response)
}
break
case 'TopSpace': // This means the TopSpace folder.
{
respondWithFile(serverConfig.pathToCanvasApp + '/TopSpace/' + requestParameters[2], response)
}
break
case 'StrategySpace': // This means the StrategySpace folder.
{
respondWithFile(serverConfig.pathToCanvasApp + '/StrategySpace/' + requestParameters[2], response)
}
break
case 'ControlsToolBox': // This means the StrategySpace folder.
{
respondWithFile(serverConfig.pathToCanvasApp + '/ControlsToolBox/' + requestParameters[2], response)
}
break
case 'Utilities': // This means the StrategySpace folder.
{
respondWithFile(serverConfig.pathToCanvasApp + '/Utilities/' + requestParameters[2], response)
}
break
case 'AABrowserAPI': // This means the Scripts folder.
{
switch (requestParameters[2]) {
case "authenticateUser": {
const AABROWSER_API_USER_AUTHENTICATION = require('./AABrowserAPI/' + 'UserAuthentication');
let userAuthentication = AABROWSER_API_USER_AUTHENTICATION.newUserAuthentication();
userAuthentication.initialize(sessionManager, storageAccessManager);
userAuthentication.authenticateUser(requestParameters[3], onFinish);
function onFinish(err, pUserProfile) {
let responseToBrowser = {
err: err,
userProfile: pUserProfile
};
respondWithContent(JSON.stringify(responseToBrowser), response);
}
break;
}
case "newTeam": {
const AABROWSER_API_TEAM_SETUP = require('./AABrowserAPI/' + 'TeamSetup');
let teamSetup = AABROWSER_API_TEAM_SETUP.newTeamSetup();
teamSetup.initialize(serverConfig, storage);
let devTeamCodeName = decodeURI(requestParameters[3]);
let devTeamDisplayName = decodeURI(requestParameters[4]);
let userName = decodeURI(requestParameters[5]);
let botCodeName = decodeURI(requestParameters[6]);
let botDisplayName = decodeURI(requestParameters[7]);
let userId = decodeURI(requestParameters[8]);
let sharedSecret = decodeURI(requestParameters[9]);
if (sharedSecret !== serverConfig.newTeamSharedSecret) {
let customFailResponse = {
result: global.DEFAULT_FAIL_RESPONSE.result,
message: "The shared secret provided is incorrect"
}
respondWithContent(JSON.stringify(customFailResponse), response);
if (CONSOLE_LOG === true) { console.log("[WARN] server -> AABrowserAPI -> newTeam -> Shared Secret Received Incorrect."); }
return;
}
teamSetup.newTeam(devTeamCodeName, devTeamDisplayName, userName, botCodeName, botDisplayName, userId, onSetupFinished);
function onSetupFinished(err) {
if (err.result === global.DEFAULT_OK_RESPONSE.result) {
/* We must re-load all the webserver caches.*/
initialize();
}
respondWithContent(JSON.stringify(err), response)
}
break
}
case 'deleteTeam': {
const AABROWSER_API_TEAM_SETUP = require('./AABrowserAPI/' + 'TeamSetup')
let teamSetup = AABROWSER_API_TEAM_SETUP.newTeamSetup()
teamSetup.initialize(serverConfig, storage)
let devTeamCodeName = decodeURI(requestParameters[3])
let userName = decodeURI(requestParameters[4])
let botCodeName = decodeURI(requestParameters[5])
let userId = decodeURI(requestParameters[6])
let sharedSecret = decodeURI(requestParameters[7])
if (sharedSecret !== serverConfig.deleteTeamSharedSecret) {
let customFailResponse = {
result: global.DEFAULT_FAIL_RESPONSE.result,
message: 'The shared secret provided is incorrect'
}
respondWithContent(JSON.stringify(customFailResponse), response)
if (CONSOLE_LOG === true) { console.log('[WARN] server -> AABrowserAPI -> deleteTeam -> Shared Secret Received Incorrect.') }
return
}
teamSetup.deleteTeam(devTeamCodeName, userName, botCodeName, userId, onSetupFinished)
function onSetupFinished (err) {
if (err.result === global.DEFAULT_OK_RESPONSE.result) {
/* We must re-load all the webserver caches. */
initialize()
}
respondWithContent(JSON.stringify(err), response)
}
break
}
}
}
break
case 'Scripts': // This means the Scripts folder.
{
if (requestParameters[2] === 'AppLoader.js') {
let fs = require('fs')
try {
let fileName = './Scripts/' + 'AppLoader.js'
fs.readFile(fileName, onFileRead)
function onFileRead (err, file) {
if (CONSOLE_LOG === true) { console.log('[INFO] server -> onBrowserRequest -> onFileRead -> Entering function.') }
try {
let fileContent = file.toString()
addPlotters()
function addPlotters () {
if (CONSOLE_LOG === true) { console.log('[INFO] server -> onBrowserRequest -> onFileRead -> addPlotters -> Entering function.') }
let htmlLinePlotter = '' + '\n' +
' "Plotters/@devTeam@/@repo@/@module@.js",'
let htmlLinePlotterPanel = '' + '\n' +
' "PlotterPanels/@devTeam@/@repo@/@module@.js",'
let devTeams = ecosystemObject.devTeams
let hosts = ecosystemObject.hosts
addScript(devTeams)
addScript(hosts)
function addScript (pDevTeamsOrHosts) {
if (CONSOLE_LOG === true) { console.log('[INFO] server -> onBrowserRequest -> onFileRead -> addPlotters -> addScript -> Entering function.') }
for (let i = 0; i < pDevTeamsOrHosts.length; i++) {
let devTeam = pDevTeamsOrHosts[i]
for (let j = 0; j < devTeam.plotters.length; j++) {
let plotter = devTeam.plotters[j]
if (plotter.modules !== undefined) {
for (let k = 0; k < plotter.modules.length; k++) {
let module = plotter.modules[k]
let htmlLineCopy = htmlLinePlotter
let stringToInsert
stringToInsert = htmlLineCopy.replace('@devTeam@', devTeam.codeName)
stringToInsert = stringToInsert.replace('@repo@', plotter.repo)
stringToInsert = stringToInsert.replace('@module@', module.moduleName)
let firstPart = fileContent.substring(0, fileContent.indexOf('/* Plotters */') + 14)
let secondPart = fileContent.substring(fileContent.indexOf('/* Plotters */') + 14)
fileContent = firstPart + stringToInsert + secondPart
if (module.panels !== undefined) {
for (let l = 0; l < module.panels.length; l++) {
let panel = module.panels[l]
let htmlLineCopy = htmlLinePlotterPanel
let stringToInsert
stringToInsert = htmlLineCopy.replace('@devTeam@', devTeam.codeName)
stringToInsert = stringToInsert.replace('@repo@', plotter.repo)
stringToInsert = stringToInsert.replace('@module@', panel.moduleName)
let firstPart = fileContent.substring(0, fileContent.indexOf('/* PlotterPanels */') + 19)
let secondPart = fileContent.substring(fileContent.indexOf('/* PlotterPanels */') + 19)
fileContent = firstPart + stringToInsert + secondPart
}
}
}
}
}
}
}
}
respondWithContent(fileContent, response)
} catch (err) {
console.log('[ERROR] server -> onBrowserRequest -> File Not Found: ' + fileName + ' or Error = ' + err)
}
}
} catch (err) {
console.log(err)
}
} else {
respondWithFile('./Scripts/' + requestParameters[2], response)
}
}
break
case 'AACloud': // This means the cloud folder.
{
let filePath = requestParameters[2]
if (requestParameters[3] !== undefined) {
filePath = filePath + '/' + requestParameters[3]
}
if (requestParameters[4] !== undefined) {
filePath = filePath + '/' + requestParameters[4]
}
let map = storageData
let script = map.get(filePath)
if (script !== undefined) {
respondWithContent(script, response)
} else {
if (CONSOLE_LOG === true) { console.log('[WARN] server -> onBrowserRequest -> readEcosystemConfig -> Script Not Found.') }
if (CONSOLE_LOG === true) { console.log('[WARN] server -> onBrowserRequest -> readEcosystemConfig -> requestParameters[2] = ' + requestParameters[2]) }
respondWithContent('', response)
}
}
break
case 'Bots': // This means the cloud folder.
{
switch (requestParameters[3]) {
case 'bots': {
let devTeam = requestParameters[2]
let source = requestParameters[3]
let repo = requestParameters[4]
let path
if (requestParameters[6] !== undefined) {
path = requestParameters[5] + '/' + requestParameters[6]
} else {
path = requestParameters[5]
}
botScripts.getScript(devTeam, source, repo, path, onScriptReady)
break
}
case 'members': {
let devTeam = requestParameters[2]
let source = requestParameters[3] + '/' + requestParameters[4]
let repo = requestParameters[5]
let path
if (requestParameters[7] !== undefined) {
path = requestParameters[6] + '/' + requestParameters[7]
} else {
path = requestParameters[6]
}
botScripts.getScript(devTeam, source, repo, path, onScriptReady)
break
}
default : {
if (CONSOLE_LOG === true) { console.log('[ERROR] server -> onBrowserRequest -> Bots -> Invalid Request. ') }
}
}
function onScriptReady (err, pScript) {
if (err.result !== global.DEFAULT_OK_RESPONSE.result) {
console.log('[ERROR] server -> onBrowserRequest -> Bots -> onScriptReady -> Could not read a file. ')
console.log('[ERROR] server -> onBrowserRequest -> Bots -> onScriptReady -> err.message = ' + err.message)
pScript = '/* Your bot source code could not be retrieved. */'
}
respondWithContent(pScript, response)
}
}
break
case 'Plotters': // This means the plotter folder, not to be confused with the Plotters script!
{
storage.readData(requestParameters[2] + '/' + 'plotters', requestParameters[3], requestParameters[4], true, onDataArrived)
function onDataArrived (err, pData) {
if (err.result !== global.DEFAULT_OK_RESPONSE.result) {
console.log('[ERROR] server -> onBrowserRequest -> Plotters -> onDataArrived -> Could not read a file. ')
console.log('[ERROR] server -> onBrowserRequest -> Plotters -> onDataArrived -> err.message = ' + err.message)
pData = ''
}
respondWithContent(pData, response)
}
}
break
case 'PlotterPanels': // This means the PlotterPanels folder, not to be confused with the Plotter Panels scripts!
{
storage.readData(requestParameters[2] + '/' + 'plotters', requestParameters[3], requestParameters[4], true, onDataArrived)
function onDataArrived (err, pData) {
if (err.result !== global.DEFAULT_OK_RESPONSE.result) {
console.log('[ERROR] server -> onBrowserRequest -> Plotters -> PlotterPanels -> Could not read a file. ')
console.log('[ERROR] server -> onBrowserRequest -> Plotters -> PlotterPanels -> err.message = ' + err.message)
pData = ''
}
respondWithContent(pData, response)
}
}
break
case 'Panels':
{
respondWithFile(serverConfig.pathToCanvasApp + '/' + requestParameters[1] + '/' + requestParameters[2], response)
}
break
case 'ChartLayers':
{
respondWithFile(serverConfig.pathToCanvasApp + '/' + requestParameters[1] + '/' + requestParameters[2], response)
}
break
case 'Azure':
{
respondWithFile('./' + requestParameters[1] + '/' + requestParameters[2], response)
}
break
case 'Spaces':
{
respondWithFile(serverConfig.pathToCanvasApp + '/' + requestParameters[1] + '/' + requestParameters[2], response)
}
break
case 'Scales':
{
respondWithFile(serverConfig.pathToCanvasApp + '/' + requestParameters[1] + '/' + requestParameters[2], response)
}
break
case 'Files':
{
respondWithFile(serverConfig.pathToFilesComponent + '/' + requestParameters[2], response)
}
break
case 'FloatingSpace':
{
respondWithFile(serverConfig.pathToCanvasApp + '/' + requestParameters[1] + '/' + requestParameters[2], response)
}
break
case 'ChartsSpace':
{
respondWithFile(serverConfig.pathToCanvasApp + '/' + requestParameters[1] + '/' + requestParameters[2], response)
}
break
default:
{
homePage()
}
}
function homePage () {
if (requestParameters[1] === '') {
let fs = require('fs')
try {
let fileName = 'index.html'
fs.readFile(fileName, onFileRead)
function onFileRead (err, file) {
if (CONSOLE_LOG === true) { console.log('[INFO] server -> onBrowserRequest -> onFileRead -> Entering function.') }
try {
let fileContent = file.toString()
/* The second request parameters is the sessionToken, if it exists. */
if (requestParameters[2] !== '' && requestParameters[2] !== undefined) {
fileContent = fileContent.replace("window.canvasApp.sessionToken = ''", "window.canvasApp.sessionToken = '" + requestParameters[2] + "'")
}
respondWithContent(fileContent, response)
} catch (err) {
console.log('[ERROR] server -> onBrowserRequest -> File Not Found: ' + fileName + ' or Error = ' + err)
}
}
} catch (err) {
console.log(err)
}
} else {
respondWithFile(serverConfig.pathToCanvasApp + '/' + requestParameters[1], response)
}
}
function sendResponseToBrowser (htmlResponse) {
if (CONSOLE_LOG === true) { console.log('[INFO] server -> onBrowserRequest -> sendResponseToBrowser -> Entering function.') }
response.writeHead(200, { 'Content-Type': 'text/html' })
response.write(htmlResponse)
response.end('\n')
}
}
function respondWithContent (content, response) {
if (CONSOLE_LOG === true) { console.log('[INFO] server -> respondWithContent -> Entering function.') }
try {
response.setHeader('Cache-Control', 'no-cache, no-store, must-revalidate') // HTTP 1.1.
response.setHeader('Pragma', 'no-cache') // HTTP 1.0.
response.setHeader('Expires', '0') // Proxies.
response.setHeader('Access-Control-Allow-Origin', '*') // Allows to access data from other domains.
response.writeHead(200, { 'Content-Type': 'text/html' })
response.write(content)
response.end('\n')
// console.log("Content Sent: " + content);
} catch (err) {
returnEmptyArray(response)
}
}
function respondWithFile (fileName, response) {
if (CONSOLE_LOG === true) { console.log('[INFO] server -> respondWithFile -> Entering function.') }
let fs = require('fs')
try {
if (fileName.indexOf('undefined') > 0) {
console.log('[WRN] server -> respondWithFile -> Received request for undefined file. ')
return
}
fs.readFile(fileName, onFileRead)
function onFileRead (err, file) {
if (CONSOLE_LOG === true) { console.log('[INFO] server -> respondWithFile -> onFileRead -> Entering function.') }
try {
let htmlResponse = file.toString()
response.setHeader('Cache-Control', 'no-cache, no-store, must-revalidate') // HTTP 1.1.
response.setHeader('Pragma', 'no-cache') // HTTP 1.0.
response.setHeader('Expires', '0') // Proxies.
response.setHeader('Access-Control-Allow-Origin', '*') // Allows to access data from other domains.
// response.writeHead(200, { 'Content-Type': 'text/html' });
response.write(htmlResponse)
response.end('\n')
// console.log("File Sent: " + fileName);
//
} catch (err) {
console.log('[ERROR] server -> respondWithFile -> onFileRead -> File Not Found: ' + fileName + ' or Error = ' + err)
returnEmptyArray()
}
}
} catch (err) {
returnEmptyArray()
}
}
function respondWithImage (fileName, response) {
if (CONSOLE_LOG === true) { console.log('[INFO] server -> respondWithImage -> Entering function.') }
let fs = require('fs')
try {
fs.readFile(fileName, onFileRead)
function onFileRead (err, file) {
if (CONSOLE_LOG === true) { console.log('[INFO] server -> respondWithImage -> onFileRead -> Entering function.') }
try {
response.setHeader('Cache-Control', 'no-cache, no-store, must-revalidate') // HTTP 1.1.
response.setHeader('Pragma', 'no-cache') // HTTP 1.0.
response.setHeader('Expires', '0') // Proxies.
response.setHeader('Access-Control-Allow-Origin', '*') // Allows to access data from other domains.
response.writeHead(200, { 'Content-Type': 'image/png' })
response.end(file, 'binary')
} catch (err) {
console.log('[ERROR] server -> respondWithImage -> onFileRead -> File Not Found: ' + fileName + ' or Error = ' + err)
}
}
} catch (err) {
console.log('[ERROR] server -> respondWithImage -> err = ' + err)
}
}
function returnEmptyArray (response) {
try {
if (CONSOLE_LOG === true) { console.log('[INFO] server -> respondWithFile -> returnEmptyArray -> Entering function.') }
response.setHeader('Cache-Control', 'no-cache, no-store, must-revalidate') // HTTP 1.1.
response.setHeader('Pragma', 'no-cache') // HTTP 1.0.
response.setHeader('Expires', '0') // Proxies.
response.writeHead(200, { 'Content-Type': 'text/html' })
response.write('[]')
response.end('\n')
} catch (err) {
console.log('[ERROR] server -> returnEmptyArray -> err.message ' + err.message)
}
}
function processPost (request, response, callback) {
let data = ''
if (typeof callback !== 'function') return null
if (request.method == 'POST') {
request.on('data', function (pData) {
data += pData
if (data.length > 1e6) {
data = ''
response.writeHead(413, { 'Content-Type': 'text/plain' }).end()
request.connection.destroy()
}
})
request.on('end', function () {
callback(data)
})
} else {
response.writeHead(405, { 'Content-Type': 'text/plain' })
response.end()
}
}