I have hooked the StringBuilder class method toString by using this code
Java.perform(function() {
const StringBuilder = Java.use('java.lang.StringBuilder');
StringBuilder.toString.implementation = function() {
var res = this.toString();
var tmp = "";
if (res !== null) {
tmp = res.toString().replace("/n", "");
console.log(tmp);
}
return res;
};
});
This code is printing a ton of irrelevant data. I just want to print the data from a specific class/method. How it can be accomplished?
Thanks
I have not tested the code but the following should work:
Also hook the specific method that uses StringBuilder.toString() you are interested in and set a variable that enables your StringBuilder hooking code just while you are in that method:
var sbActivate = false;
Java.perform(function() {
const StringBuilder = Java.use('java.lang.StringBuilder');
StringBuilder.toString.implementation = function() {
var res = this.toString();
if (sbActivate) {
var tmp = "";
if (res !== null) {
tmp = res.toString().replace("/n", "");
console.log(tmp);
}
}
return res;
};
});
Java.perform(function() {
const someclass = Java.use('<the specific class you are interested in>');
someclass.someMethod.implementation = function() {
sbActivate = true;
var res = this.someMethod();
sbActivate = false;
return res;
};
});
I wrote this small program to fetch data. This however is done async. Since I nonetheless need to use the function holeVertreter(kzl) as a function in another module, I'd like to get a return value which I can eventually pass on.
Excuse my spaghetti code (I usually prettify the code when I am done with my task ...).
Credentials are stored in a file and are therefore not found in this file.
I'd like to end up with "vertreter" as a return value.
Thank you in advance.
const node = require("deasync");
const DSB = require('dsbapi');
const tabletojson = require('tabletojson');
const https = require('https');
const cred = require("./vertrCred");
const dsb = new DSB(cred["dsb"]["user"], cred["dsb"]["passw"]); //Sanitized - no Credentials here
//Stackoverflow 2332811
String.prototype.capitalize = function(lower) {
return (lower ? this.toLowerCase() : this).replace(/(?:^|\s)\S/g, function(a) { return a.toUpperCase(); });
};
function holePlan(kuerzel) {
dsb.fetch()
.then(data => {
const timetables = DSB.findMethodInData('timetable', data);
const tiles = DSB.findMethodInData('tiles', data);
var tilesStr = JSON.stringify(tiles["data"][0]["url"]);
var url = JSON.parse(tilesStr);
https.get(url, (resp) => {
let data = '';
resp.on('data', (chunk) => {
data += chunk;
});
resp.on('end',() => {
var tableasjson = tabletojson.convert(data);
var erstetab = tableasjson[0];
var zweitetab = tableasjson[1];
var drittetab = tableasjson[2];
var viertetab = tableasjson[3];
var fuenftetab = tableasjson[4];
var sechstetab = tableasjson[5];
var siebtetab = tableasjson[6];
var achtetab = tableasjson[7];
if (typeof kuerzel === "undefined")
{
var regenechse = '(Aaa|Aaa[A-Za-z?]|[A-Za-z?]Aaa)';
}
else {
var name = kuerzel.capitalize(true);
var regenechse = '('+name+'|'+name+'[A-Za-z?]|[A-Za-z?]'+name+')';
}
const regex = new RegExp(regenechse,'g');
var sammel = Object.assign(drittetab,fuenftetab);
var z= 0;
var vertreter = {}
var y = JSON.parse(JSON.stringify(sammel));
for (i=0;i<y.length;i++) {
if (typeof y[i].Vertreter =='undefined') {
}
else {
if(y[i].Vertreter.match(regex))
{
z += 1;
vertreter[z] = y[i];
}
}
}
if (z == 0) {
// console.log("Es gibt nichts zu vertreten");
}
else {
//console.log("Es werden "+z+" Stunden vertreten");
return (vertreter);
} ;
});
})
})
.catch(e => {
// An error occurred :(
console.log(e);
});
}
//Stackoverflow
function warte(promise) {
var done = 0;
var result = null;
promise.then(
function (value) {
done = 1;
result = value;
return (value);
},
function (reason) {
done = 1;
throw reason;
}
);
while (!done)
node.runLoopOnce();
return (result);
}
function holeVertretung(kzl) {
var aufgabe = new Promise((resolve,reject) => {
setTimeout(resolve,1000,holePlan(kzl));
});
var ergebnis = warte(aufgabe);
if (typeof ergebnis === "undefined") {
console.log("Mist");
}
else {
console.log(ergebnis);
}
return ergebnis;
}
holeVertretung("Aaa");
That's not the right way to work with promises. If you do such infinite loop, it beats the whole purpose of using promises. Instead, return value from the promise, and use async-await like this:
function warte(promise) {
var done = 0;
var result = null;
return promise.then(
...
}
async function holeVertretung(kzl) {
var aufgabe = new Promise((resolve, reject) => {
setTimeout(resolve, 1000, holePlan(kzl));
});
var ergebnis = await warte(aufgabe);
...
If async-await does not work for some reason, use then clause:
warte(aufgabe).then(value => {
var ergebnis = value;
});
I have the following piece of code which is working fine.
var config = require('./config');
var cheerio = require('cheerio');
var myhttp = require('./myHttp');
var stringHelper = require('./stringHelper');
var Base64 = require('./base64.js').Base64;
var Encrypt = require('./Encrypt.js');
var myEncode = require('./Encode.js');
var rules = require('./rules');
var io = require('socket.io-emitter')({ host: '127.0.0.1', port: 6379 });
var mysql = require('mysql');
delete require.cache[require.resolve('./requestLogin1.js')]
var myvar = require('./requestLogin1.js');
var connection = mysql.createConnection(
{
host : 'localhost',
user : 'root',
password : 'abc',
database : 'abcd'
}
);
connection.connect(function(err) {
if (err) {
console.log('error connecting: ' + err.stack);
return;
}
});
var timerOB;
var timerMW;
var timerP;
var timerTL;
var news = {
'mw': [],
'ob': [],
'all': {},
};
var status = false;
function round(rnum, rlength) {
return newnumber = Math.round(rnum * Math.pow(10, rlength)) / Math.pow(10, rlength);
}
function roundup(rnum, rlength) {
return newnumber = Math.ceil(rnum * Math.pow(10, rlength)) / Math.pow(10, rlength);
}
function rounddown(rnum, rlength) {
return newnumber = Math.floor(rnum * Math.pow(10, rlength)) / Math.pow(10, rlength);
}
function function1(_html) {
console.log('function1 run')
var $ = cheerio.load(_html);
var v_lgnid = $('#userId').attr('value');
var v_psswrd = config.password;
var v_data = v_lgnid + "|" + v_psswrd;
var _key = $('#accntid').attr('value');
if (_key) {
v_data = Base64.encode(Encrypt.AESEncryptCtr(v_data, _key , "256"));
v_data = escape(v_data);
myhttp.get(
'https://example.com/ValidPassword.jsp?' + $('#name').attr('value') + "=" + v_data,
function (_htmlShowImage) {
if (_htmlShowImage && _htmlShowImage.trim() == "OK") {
function2();
} else {
console.log('Login Fail');
}
});
} else {
login();
console.log('Encrypt password error');
}
}
function function2() {
myhttp.get(
'https://example.com/QuestionsAuth.jsp',
function (_htmlShowImage) {
var $ = cheerio.load(_htmlShowImage);
var sLoginID = $('#sLoginID').attr('value');
var Answer1 = config.answer1;
var Answer2 = config.answer2;
var Index1 = $('#st1').attr('value');
var Index2 = $('#st2').attr('value');
var v_data = sLoginID + "|" + Answer1 + "|" + Answer2 + "|" + Index1 + "|" + Index2;
v_data = Base64.encode(Encrypt.AESEncryptCtr(v_data, $('#key_questauth').attr('value'), "256"));
v_data = escape(v_data);
myhttp.get(
'https://example.com/ValidAnswers.jsp?' + $('#name_questauth').attr('value') + "=" + v_data,
function (_htmlShowImage) {
if (_htmlShowImage && _htmlShowImage.trim() == "OK") {
//rootCallback();
myhttp.get(
'https://example.com/DefaultLogin.jsp',
function (_html) {
console.log('Login sucess')
stringHelper.SaveFileCookies('abcd.txt', myhttp.loadCookie(), 'save cookie login sucess');
if (timerMW) {
clearTimeout(timerMW);
}
timerMW = setTimeout(function6, config.DelayExtractMW);
if (timerOB) {
clearTimeout(timerOB);
}
timerOB = setTimeout(function5, config.DelayExtractOB);
if (timerP) {
clearTimeout(timerP);
}
timerP = setTimeout(function4, config.function4);
});
} else {
console.log('Login Fail - timer');
}
});
});
}
var login = function () {
if (timerMW) {
clearTimeout(timerMW);
}
if (timerOB) {
clearTimeout(timerOB);
}
if (timerP) {
clearTimeout(timerP);
}
if (timerTL) {
clearTimeout(timerTL);
}
myhttp.init();
myhttp.post(
'https://example.com/ShowImage.jsp',
{ "requiredLogin": myEncode.Convert(config.uname) },
function (_htmlpost) {
if (_htmlpost) {
function1(_htmlpost);
} else {
if (timerTL) {
clearTimeout(timerTL);
}
timerTL = setTimeout(login, config.DelayNestError);
}
});
}
exports.login = login;
function function3() {
return {
TS: '',
MWP: 0,
LTP: 0,
NQ: 0,
OBBP: '',
OBSP: '',
CurrTime: 0,
rules: {}
};
}
function function4() {
status = false;
myhttp.get('https://example.com/PB.jsp?Exchange=',
function (_html) {
if (_html && _html.length > 10) {
news.pn = {};
$ = cheerio.load(_html);
$('tr[id^="TR"]').each(function () {
status = true;
var symbol = $('td:nth-child(3)', this).text().trim();
var objob = {
'NQ': parseInt($('td:nth-child(11)', this).text().trim()),
};
var post = {
'symbol': symbol,
'nq': objob.NQ
};
connection.query('INSERT INTO NP SET ?', post, function (err,result){
if (err)
{console.log("NP sql insert error : " +symbol);}
else {
console.log("data inserted into NP Table : " +symbol);
}
});
var objstock = news.all[symbol];
if (typeof objstock!='undefined') {
objstock.NQ = objob.NQ;
news.pn[symbol] = objob;
news.all[symbol] = objstock;
if (status) {
io.emit('news', news);
}
}
else
{
console.log('symbol not found');
}
});
if (timerP) {
clearTimeout(timerP);
}
console.log('setTimer function4:' + config.DelayExtractPn);
timerP = setTimeout(function4, config.DelayExtractPn);
}
connection.query('UPDATE MASTER1 SET tbq = (SELECT sum(a.bq) FROM (select distinct symbol, bq from NP) as a)', function (err,result){
if (err)
{console.log("CQ06 skipped: ");}
else {
console.log("Step 6 - Master1 tbq data updated");
}
});
connection.query('UPDATE MASTER1 SET tsq = (SELECT sum(a.sq) FROM (select distinct symbol, sq from NP) as a)', function (err,result){
if (err)
{console.log("CQ07 skipped: ");}
else {
console.log("Step 7 - Master1 tsq data updated");
}
});
});
}
function function5() {
status = false;
myhttp.get('https://example.com/OB.jsp?Exchange=&OrderType=All',
function (_html) {
if (_html && _html.length > 10) {
$ = cheerio.load(_html);
console.log('OB - Step 2 - html loaded for parsing');
news.ob = [];
$('tr[id^="TR"]').each(function () {
var statusOrder = $('td:nth-child(20)', this).text().trim();
if (statusOrder.toLowerCase().indexOf('open') >= 0) {
status = true;
var objob = {
'symbol': $('td:nth-child(6)', this).text().trim(),
'buysell': $('td:nth-child(9)', this).text().trim(),
'ordernumber': $('input[name="Select"]', this).attr('value'),
};
var objstock = news.all[objob.symbol];
objstock.OBBP = objob.buysell == "BUY"?objob.ordernumber:"";
objstock.OBSP = objob.buysell == "SELL"?objob.ordernumber:"";
news.ob.push(objob);
}
});
if (status) {
io.emit('news', news);
}
if (timerOB) {
clearTimeout(timerOB);
}
timerOB = setTimeout(function5, config.DelayExtractOB);
}
});
}
function function6() {
myhttp.get(
'https://example.com/MW.jsp?',
function (_html) {
if (_html && _html.length > 10) {
var $ = cheerio.load(_html);
status = false;
news.mw = [];
var countCheckRule = 0;
var countCheckedRule = 0;
var tmpall = {};
$('tr[onclick]').each(function () {
status = true;
var data1 = $("input[onclick*='Apply(']", this).attr('onclick');
var arrdata1 = data1.split("','");
var stockid = arrdata1[1].split('|')[0];
var symbol = $('td:nth-child(3)', this).text().trim();
var price = parseFloat($('td:nth-child(4)', this).text().trim());
var cTime = stringHelper.getIndiaTime();
var CurrTime = cTime.toLocaleTimeString();//(will be updated every 60 seconds)
news.mw.push({
'symbol': symbol,
'price': price,
'stockid': stockid,
'CurrTime': CurrTime,
});
var objstock = news.all[symbol];
if (!objstock) {
objstock = function3();
}
if (!news.pn[symbol]) {
objstock.NQ = 0;
}
var notfoundob = true;
for (var symbolkey in news.ob) {
if (news.ob[symbolkey].symbol == symbol) {
notfoundob = false;
}
}
if (notfoundob) {
objstock.OBBP = "";
objstock.OBSP = "";
}
objstock.TS = symbol;//trade symbol
objstock.MWP = stockid;//trade id
objstock.LTP = price;
objstock.CurrTime = CurrTime;
rules.checRules(objstock, myhttp, function (rules_res) {
objstock.rules = rules_res;
tmpall[symbol] = objstock;
});
countCheckRule++;
});
rules.rule12(tmpall, function (_tmpall) {
tmpall = _tmpall;
});
news.all = tmpall;
if (!status) {
login();
console.log('MW - Step 9 - logged out');
} else {
io.emit('news', news);
if (timerMW) {
clearTimeout(timerMW);
}
timerMW = setTimeout(function6, config.DelayExtractMW);
}
} else {
if (timerMW) {
clearTimeout(timerMW);
}
timerMW = setTimeout(function6, config.DelayExtractMW);
}
});
}
Now i want to use async to ensure that function6 is run only after function4 & function5 is run.
I have tried to learn about async from various forums and have changed the code as follows:
var async = require('async'); //line added
// change made
async.parallel([
function function4(callback) {
status = false;
myhttp.get('https://example.com/PB.jsp?Exchange=',
function (_html) {
if (_html && _html.length > 10) {
news.pn = {};
$ = cheerio.load(_html);
$('tr[id^="TR"]').each(function () {
status = true;
var symbol = $('td:nth-child(3)', this).text().trim();
var objob = {
'NQ': parseInt($('td:nth-child(11)', this).text().trim()),
};
console.log('Posn - Step 3A - Found position:' + symbol);
var post = {
'symbol': symbol,
'nq': objob.NQ
};
connection.query('INSERT INTO NP SET ?', post, function (err,result){
if (err)
{console.log("NP sql insert error : " +symbol);}
else {
console.log("data inserted into NP Table : " +symbol);
}
});
var objstock = news.all[symbol];
if (typeof objstock!='undefined') {
objstock.NQ = objob.NQ;
news.pn[symbol] = objob;
news.all[symbol] = objstock;
if (status) {
io.emit('news', news);
}
}
else
{
console.log('symbol not found');
}
});
if (timerP) {
clearTimeout(timerP);
}
console.log('setTimer function4:' + config.DelayExtractPn);
timerP = setTimeout(function4, config.DelayExtractPn);
}
connection.query('UPDATE MASTER1 SET tbq = (SELECT sum(a.bq) FROM (select distinct symbol, bq from NP) as a)', function (err,result){
if (err)
{console.log("CQ06 skipped: ");}
else {
console.log("Step 6 - Master1 tbq data updated");
}
});
connection.query('UPDATE MASTER1 SET tsq = (SELECT sum(a.sq) FROM (select distinct symbol, sq from NP) as a)', function (err,result){
if (err)
{console.log("CQ07 skipped: ");}
else {
console.log("Step 7 - Master1 tsq data updated");
}
});
callback(); //line added
});
},
function function5(callback) {
status = false;
myhttp.get('https://example.com/OB.jsp?Exchange=&OrderType=All',
function (_html) {
if (_html && _html.length > 10) {
$ = cheerio.load(_html);
console.log('OB - Step 2 - html loaded for parsing');
news.ob = [];
$('tr[id^="TR"]').each(function () {
var statusOrder = $('td:nth-child(20)', this).text().trim();
if (statusOrder.toLowerCase().indexOf('open') >= 0 || statusOrder.toLowerCase().indexOf('trigger pending') >= 0) {
status = true;
var objob = {
'symbol': $('td:nth-child(6)', this).text().trim(),
'buysell': $('td:nth-child(9)', this).text().trim(),
'ordernumber': $('input[name="Select"]', this).attr('value'),
};
var objstock = news.all[objob.symbol];
objstock.OBBP = objob.buysell == "BUY"?objob.ordernumber:"";
objstock.OBSP = objob.buysell == "SELL"?objob.ordernumber:"";
news.ob.push(objob);
}
});
if (status) {
console.log('OB - Step 5 - pushed to html page');
io.emit('news', news);
}
if (timerOB) {
clearTimeout(timerOB);
}
timerOB = setTimeout(function5, config.DelayExtractOB);
}
callback(); //line added
});
}
],
function function6() {
myhttp.get(
'https://example.com/MW.jsp?',
function (_html) {
if (_html && _html.length > 10) {
var $ = cheerio.load(_html);
status = false;
news.mw = [];
var countCheckRule = 0;
var countCheckedRule = 0;
var tmpall = {};
$('tr[onclick]').each(function () {
status = true;
var data1 = $("input[onclick*='Apply(']", this).attr('onclick');
var arrdata1 = data1.split("','");
var stockid = arrdata1[1].split('|')[0];
var symbol = $('td:nth-child(3)', this).text().trim();
var price = parseFloat($('td:nth-child(4)', this).text().trim());
var cTime = stringHelper.getIndiaTime();
var CurrTime = cTime.toLocaleTimeString();//(will be updated every 60 seconds)
news.mw.push({
'symbol': symbol,
'price': price,
'stockid': stockid,
'CurrTime': CurrTime,
});
var objstock = news.all[symbol];
if (!objstock) {
objstock = function3();
}
if (!news.pn[symbol]) {
objstock.NQ = 0;
}
var notfoundob = true;
for (var symbolkey in news.ob) {
if (news.ob[symbolkey].symbol == symbol) {
notfoundob = false;
}
}
if (notfoundob) {
objstock.OBBP = "";
objstock.OBSP = "";
}
objstock.TS = symbol;//trade symbol
objstock.MWP = stockid;//trade id
objstock.LTP = price;
objstock.CurrTime = CurrTime;
rules.checRules(objstock, myhttp, function (rules_res) {
objstock.rules = rules_res;
tmpall[symbol] = objstock;
});
countCheckRule++;
});
//new check rules
rules.rule12(tmpall, function (_tmpall) {
tmpall = _tmpall;
});
news.all = tmpall;
if (!status) {
login();
} else {
io.emit('news', news);
if (timerMW) {
clearTimeout(timerMW);
}
timerMW = setTimeout(function6, config.DelayExtractMW);
}
} else {
if (timerMW) {
clearTimeout(timerMW);
}
timerMW = setTimeout(function6, config.DelayExtractMW);
}
});
});
Since my original functions do not have any callback, and since async needs callback, i have tried to code a callback in function4 & function5 - but I guess i have not coded it correctly.
I am getting an error in the line where callback is present that states "TypeError: undefined is not a function".
How do i correct this?
Related Question No. 2 : the current code has a timer function whereby function4, function5 and function6 runs with a preset timer. If async works, how do i define a timer whereby the combined set of function4,5 & 6 works based on a preset timer?
Sorry about the long code -- i am new to nodejs and was handed over this code as such and am trying to get this change made.
Thanks for your guidance.
You can instead make function4 and function5 to return promise and then execute function6 only after both function4's and function5's promise gets resolved.
I am trying to include a module i found that will help manage users:
http://www.codeproject.com/Articles/382561/Session-Management-in-Nodejs
Ive copied the code and put it in the same directory as my server.js
I require it by doing:
var express = require('express');
var http = require('http'),
mysql = require("mysql");
var server = http.createServer(app);
var io = require('socket.io').listen(server);
var sessionMgm = require("./sessionManagement");
Now in my socket i do this:
io.sockets.on('connection', function (socket) {
socket.on('setUserInfo', function (data) {
var sess = new Object();
sess.sessionId = socket.id;
sess.userId = data.userId;
sess.username = data.username;
sess.role = data.role;
sessionMgm.add(sess);
});
socket.on("private", function(data) {
if(data.agentName.length <= 0) {
data.agentName = 'Besökare';
}
io.sockets.in('Room_' + data.user_id).emit('updatechat', data.agentName, data.msg);
var user = sessionMgm.getSessionByUserId(data.id);
console.log('::: A socket with ID ' + user + ' connected! ::: ');
});
});
However i keep getting this error:
TypeError: Object # has no method 'getSessionByUserId'
Cant seem to figure out whats wrong, any ideas?
sessionManagement.js:
module.exports = sessionManagement;
var sessions = [];
//User roles list
var userRoles = {
Admin: "administrator",
User: "user",
Supervisor: "supervisor"
};
var sessionManagement = {
indexOf: function(sessionId) {
for(var i in sessions) {
if(sessions[i].sessionId == sessionId)
return i;
}
return null;
},
indexOfUser: function(userId) {
for(var i in sessions) {
if(sessions[i].userId == userId)
return i;
}
return null;
},
add: function(sessionData) {
sessions.push(sessionData);
},
remove: function(sessionId) {
var index = this.indexOf(sessionId);
if(index != null) {
sessions.splice(index, 1);
} else {
return null;
}
},
removeByUserId: function(userId) {
var index = this.indexOf(userId);
if(index != null) {
sessions.splice(index, 1);
} else {
return null;
}
},
getSessionById: function(userId) {
var index = this.indexOfUser(userId);
if(index != null) {
return sessions[index];
} else {
return null;
}
},
getSessionByUserId: function(sessionId) {
var index = this.indexOfUser(userId);
if(index != null) {
return sessions[index];
} else {
return null;
}
},
isAdmin: function(userId) {
var index = this.indexOfUser(userId);
if(index != null) {
if(users[index].role == userRoles.Admin) {
return true;
} else {
return false;
}
} else {
return null;
}
},
getUsersByRole: function(role) {
var usersByRole = [];
for(var i in users) {
if(users[i].role == role)
usersByRole.push(users[i]);
}
return usersByRole;
}
};
As madflow mentioned, you were missing module.exports = sessionManagement in sessionManagement.js
Then you got the error, because you were exporting sessionManagement, before initializing it. Moving the export line to the end of sessionManagement.js should fix that.
module.exports = sessionManagement; // <- you export here
...
...
...
var sessionManagement = { // and initialize here
Although sessionManagement declaration gets hoisted to the top of the module (and that's why you don't get Unexpected identifier or ReferenceError when assigning it to module.exports), it's initialization does not, so what really happens behind the scenes is something like that:
var sessionManagement; // undefined at this point
module.exports = sessionManagement; // <- you export here,
// but sessionManagement is undefined at this point
// and so will be module.exports after this line
...
...
...
sessionManagement = { // and initialize here
classroom.manager can be null on the server. So it may not come from server. I want to add it and create with my own constructor if it does not come from server. If it comes from server I want to create it with it's own data.
var mappingOption = {
create: function (classroom) {
var res = ko.mapping.fromJS(clasroom.data);
if (res.manager == undefined)
res.manager = ko.observable(new Manager());
return res;
},
'manager': {
create: function (args) {
var res = ko.mapping.fromJS(args.data);
var res2 = new Manager();
$.extend(res2, res)
return res2;
}
}
Class room model
var Classroom = function(data) {
self = this;
data = data || {};
self.manager = data.manager || new Manager();
ko.mapping.fromJS(data, {
'manager': {
function (managerData) {
return new Manager(managerData);
}
}
}, self);
};
Manager model
var Manager = function(data) {
self = this;
data = data || {};
ko.mapping.fromJS(data, {}, self);
};
Key part is the data || new Manager() section