Mosca gives this error:
TypeError: Client is not a constructor
at new KafkaAscoltatore (/home/x/Desktop/broker/node_modules/mosca/node_modules/ascoltatori/lib/kafka_ascoltatore.js:59:26)
at Object.build (/home/x/Desktop/broker/node_modules/mosca/node_modules/ascoltatori/lib/ascoltatori.js:77:12)
at /home/x/Desktop/broker/node_modules/mosca/lib/server.js:181:40
at makeCall (/home/x/Desktop/broker/node_modules/fastseries/series.js:117:7)
at ResultsHolder.release (/home/x/Desktop/broker/node_modules/fastseries/series.js:96:9)
at series (/home/x/Desktop/broker/node_modules/fastseries/series.js:39:14)
at Object.series (/home/x/Desktop/broker/node_modules/steed/steed.js:90:7)
at new Server (/home/x/Desktop/broker/node_modules/mosca/lib/server.js:171:9)
at Object.<anonymous> (/home/x/Desktop/broker/broker.js:118:14)
at Module._compile (internal/modules/cjs/loader.js:689:30)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:700:10)
at Module.load (internal/modules/cjs/loader.js:599:32)
at tryModuleLoad (internal/modules/cjs/loader.js:538:12)
at Function.Module._load (internal/modules/cjs/loader.js:530:3)
at Function.Module.runMain (internal/modules/cjs/loader.js:742:12)
at startup (internal/bootstrap/node.js:266:19)
at bootstrapNodeJSCore (internal/bootstrap/node.js:596:3)
Environment
Node version:v10.9.0
Kafka-node version:latest
Mosca version:latest
What I have tried
I opened /home/x/Desktop/broker/node_modules/mosca/node_modules/ascoltatori/lib/kafka_ascoltatore.js
and after looking at the line below found out that the problem is related with kafka-node version:
this._opts.kafka = this._opts.kafka || require("kafka-node");
When I removed this._opts.kafka, it started to work fine. Then I printed both I figured out that the new version does not have Client constructor in it. Here is my print result:
this._opts.kafka (kafka-node v4.0.1 latest) returns HighLevelProducer which does not have Client, on the other hand require("kafka-node") (v0.5.9) returns HighLevelConsumer.
Code:
var backend = {
type: "kafka",
kafka: require('kafka-node'),
json: false,
connectionString: "IP:2181",
defaultEncoding: "utf8",
};
var moscaSettings = {
interfaces: [
{ type: "mqtt", port: PORT }
],
id: "mosca",
stats: false,
publishNewClient: false,
publishClientDisconnect: false,
publishSubscriptions: false,
backend: backend,
};
var server = new mosca.Server(moscaSettings); // Error pops here
I could make Kafka to work with older version as I mentioned above, but I think it would be only a quick fix, so I hope somebody can lead me with a proper solution.
The problem resulted from my using an example from the old version of kafka-node. When I replaced the code with the new example from the kafka-node GitHub, the problem was resolved.
Related
I have installed Node JS version 12, cloned node-oracle db from github.
I have also set OCI_LIB_DIR Path as mentioned in this article.
module.exports = {
user : process.env.NODE_ORACLEDB_USER || "hr",
// Get the password from the environment variable
// NODE_ORACLEDB_PASSWORD. The password could also be a hard coded
// string (not recommended), or it could be prompted for.
// Alternatively use External Authentication so that no password is
// needed.
password : process.env.NODE_ORACLEDB_PASSWORD || abcd,
// For information on connection strings see:
// https://oracle.github.io/node-oracledb/doc/api.html#connectionstrings
connectString : process.env.NODE_ORACLEDB_CONNECTIONSTRING || "jdbc:oracle:thin:#localhost:1521/orcl",
// Setting externalAuth is optional. It defaults to false. See:
// https://oracle.github.io/node-oracledb/doc/api.html#extauth
externalAuth : process.env.NODE_ORACLEDB_EXTERNALAUTH ? true : false
};
I have created a basic connection in SQL developer, would it help.
I have installed npm in node-oracledb and also set the username, but when I try to run the command "npm test" , It gives me the error
Deeksha ~/Desktop/nodewithoracle/node-oracledb (master)
$ npm test
> oracledb#4.1.0 test C:\Users\Deeksha\Desktop\nodewithoracle\node-oracledb
> mocha --opts test/opts/mocha.opts
C:\Users\Deeksha\Desktop\nodewithoracle\node-oracledb\node_modules\yargs\yargs.js:1163
else throw err
^
Error: Schema User name is not Set! Try Set Environment Variable NODE_ORACLEDB_USER.
at Object.<anonymous> (C:\Users\Deeksha\Desktop\nodewithoracle\node-oracledb\test\dbconfig.js:48:9)
at Module._compile (internal/modules/cjs/loader.js:959:30)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:995:10)
at Module.load (internal/modules/cjs/loader.js:815:32)
at Function.Module._load (internal/modules/cjs/loader.js:727:14)
at Module.require (internal/modules/cjs/loader.js:852:19)
at require (internal/modules/cjs/helpers.js:74:18)
at Object.<anonymous> (C:\Users\850044533\Desktop\nodewithoracle\node-oracledb\test\notes.js:32:18)
at Module._compile (internal/modules/cjs/loader.js:959:30)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:995:10)
at Module.load (internal/modules/cjs/loader.js:815:32)
at Function.Module._load (internal/modules/cjs/loader.js:727:14)
at Module.require (internal/modules/cjs/loader.js:852:19)
at require (internal/modules/cjs/helpers.js:74:18)
at C:\Users\Deeksha\Desktop\nodewithoracle\node-oracledb\node_modules\mocha\lib\mocha.js:330:36
at Array.forEach (<anonymous>)
at Mocha.loadFiles (C:\Users\Deeksha\Desktop\nodewithoracle\node-oracledb\node_modules\mocha\lib\mocha.js:327:14)
at Mocha.run (C:\Users\Deeksha\Desktop\nodewithoracle\node-oracledb\node_modules\mocha\lib\mocha.js:804:10)
at Object.exports.singleRun (C:\Users\Deeksha\Desktop\nodewithoracle\node-oracledb\node_modules\mocha\lib\cli\run-helpers.js:207:16)
at exports.runMocha (C:\Users\Deeksha\Desktop\nodewithoracle\node-oracledb\node_modules\mocha\lib\cli\run-helpers.js:300:13)
at Object.exports.handler (C:\Users\Deeksha\Desktop\nodewithoracle\node-oracledb\node_modules\mocha\lib\cli\run.js:296:3)
at Object.runCommand (C:\Users\Deeksha\Desktop\nodewithoracle\node-oracledb\node_modules\yargs\lib\command.js:242:26)
at Object.parseArgs [as _parseArgs] (C:\Users\Deeksha\Desktop\nodewithoracle\node-oracledb\node_modules\yargs\yargs.js:1087:28)
at Object.parse (C:\Users\Deeksha\Desktop\nodewithoracle\node-oracledb\node_modules\yargs\yargs.js:566:25)
at Object.exports.main (C:\Users\Deeksha\Desktop\nodewithoracle\node-oracledb\node_modules\mocha\lib\cli\cli.js:63:6)
at Object.<anonymous> (C:\Users\Deeksha\Desktop\nodewithoracle\node-oracledb\node_modules\mocha\bin\_mocha:10:23)
at Module._compile (internal/modules/cjs/loader.js:959:30)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:995:10)
at Module.load (internal/modules/cjs/loader.js:815:32)
at Function.Module._load (internal/modules/cjs/loader.js:727:14)
at Function.Module.runMain (internal/modules/cjs/loader.js:1047:10)
at internal/main/run_main_module.js:17:11
npm ERR! Test failed. See above for more details.
set the credential environment variables to your DB credential values before you start Node.js. The error message says NODE_ORACLEDB_USER is not set.
Alternatively you can set the values directly in your getConnection() calls:
connection = await oracledb.getConnection({ user: 'hr', password: 'welcome', connectString: 'localhost/orcl' });
But be careful of hard coding passwords.
Use a valid connection string; a JDBC connection string is not usable (Node.js is not JDBC). See the node-oracledb doc JDBC and Oracle SQL Developer Connection Strings for how to determine what to use. Based on what you posted, you should use just localhost:1521/orcl.
Save yourself some time, and read the node-oracledb installation manual, the documentation, and the examples.
I've built a couple of cloud functions in nodejs 6 and now i want to use await. How do I do that? How can I upgrade to node 8? I don't want to shift to typescript.
I've tried adding "engines": {"node": "8"} to package.json but it changed nothing.
This is a test cloud function I made:
exports.awaittest = functions.https.onRequest(async (req, res)=>{
ref = await admin.database().ref("/something/");
res.send(ref)
})
when I try to deploy it (with package.json edited), I get this:
SyntaxError: Unexpected token (
at createScript (vm.js:56:10)
at Object.runInThisContext (vm.js:97:10)
at Module._compile (module.js:549:28)
at Object.Module._extensions..js (module.js:586:10)
at Module.load (module.js:494:32)
at tryModuleLoad (module.js:453:12)
at Function.Module._load (module.js:445:3)
at Module.require (module.js:504:17)
at require (internal/module.js:20:19)
at getUserFunction (/var/tmp/worker/worker.js:413:24)
! functions[awaittest]: Deployment error.
Function load error: Code in file index.js can't be loaded.
Is there a syntax error in your code?
Detailed stack trace: /user_code/index.js:59
exports.awaittest = functions.https.onRequest(async (req, res)=>{
^
How do I upgrade to node8? I already have 6 functions deployed in node6.
I solved it in the functions/.eslintrc.json directory by changing the following:
"parserOptions": {
"ecmaVersion": 6
}
// to
"parserOptions": {
"ecmaVersion": 2017
}
'''
the very simple example below (pretty much copied off the npm inquirer front page) is giving the ".then is not a function" error. However I can't figure out what the issue is.
var inquirer = require('inquirer');
inquirer.prompt([
{
name: 'my_name',
type: 'input',
message: 'What is your name: '
}]).then(answers => {
console.log("Your name is:"+answers.my_name)
});
The error message looks like this:
? What is your name:
/home/peter/Documents/nodejs.d/vscode_examples_workspace/security/inq.js:8
}]).then(answers => {
^
TypeError: inquirer.prompt(...).then is not a function
at Object.<anonymous> (/home/peter/Documents/nodejs.d/vscode_examples_workspace/security/inq.js:8:13)
at Module._compile (internal/modules/cjs/loader.js:654:30)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:665:10)
at Module.load (internal/modules/cjs/loader.js:566:32)
at tryModuleLoad (internal/modules/cjs/loader.js:506:12)
at Function.Module._load (internal/modules/cjs/loader.js:498:3)
at Function.Module.runMain (internal/modules/cjs/loader.js:695:10)
at startup (internal/bootstrap/node.js:201:19)
at bootstrapNodeJSCore (internal/bootstrap/node.js:516:3)
But the following example works OK. So the basic node.js environment (nodejs --version = v9.11.2) is OK.
var inquirer = require('inquirer');
let q = [
{
name: 'my_name',
type: 'input',
message: 'What is your name: '
}];
inquirer.prompt (q, function (answers){
console.log("Your name is: "+answers.my_name);
});
// Output
$ nodejs inq.js
? What is your name: Peter
Your name is: Peter
This is probably because you have an old version of inquirer (0.12.0 or older) which does not support promises (promises were added in version 1.0.0).
Your snippet works fine with version 6.0.0 and 1.0.0 but fails with the exact same error message in version 0.12.0.
Check packages.json for your version and update it:
"dependencies": {
"inquirer": "^6.0.0"
}
Then do
npm install
I am trying to run a js scripts using protractor, but i am getting following error
C:\Users\Hoodi\AppData\Roaming\npm\node_modules\protractor\built\cli.js:172
throw new Error('Found extra flags: ' + unknownKeys.join(', '));
^
Error: Found extra flags: identityManagement
at Object.<anonymous> (C:\Users\Hoodi\AppData\Roaming\npm\node_modules\protractor\built\cli.js:172:15)
at Module._compile (module.js:570:32)
at Object.Module._extensions..js (module.js:579:10)
at Module.load (module.js:487:32)
at tryModuleLoad (module.js:446:12)
at Function.Module._load (module.js:438:3)
at Module.require (module.js:497:17)
at require (internal/module.js:20:19)
at Object.<anonymous> (C:\Users\Hoodi\AppData\Roaming\npm\node_modules\protractor\bin\protractor:5:1)
at Module._compile (module.js:570:32)
My config file
// conf.js
exports.config = {
framework: 'jasmine',
seleniumAddress: 'http://localhost:4444/wd/hub',
useAllAngular2AppRoots: true,
// Options to be passed to Jasmine-node.
jasmineNodeOpts: {
// Use colors in the command line report.
showColors: true,
// Default time to wait in ms before a test fails.
defaultTimeoutInterval: 60000,
},
onPrepare: function() {
require('../../lib/waitReady.js');
},
capabilities :{
browserName : 'chrome',
}
}
console.dir("argv: " + process.argv)
switch(process.argv[3]) {
case '--identityManagement':
exports.config.specs = ['./identityManagement.js'];
break;
default:
exports.config.specs = ['./identityManagement.js'];
}
I tried executing above script using protractor as well as "npm run" command, but in both cases i am getting same error. command that i used
protractor ./conf.js --identityManagement
and
npm run im
This actually works on my other system. npm and node version of system where this works are
node v7.2.1
npm v3.10.10
And where is doesnt work
node v7.4.0
npm v4.0.5
My package.json file looks like this
{
"name": "intelliflash",
"author": "Vishwanath Rawat <rawat#tegile.com>",
"description": "IntelliFlash tests",
"scripts": {
"im": "protractor ./conf.js --identityManagement"
}
}
Please help.
It has nothing to do with your npm or node versions, Latest release of Protractor 5.0 has put a check in cli for unidentified flags as you are putting with the help of process.argv.
You can solve this by disabling the flag checks:
protractor ./conf.js --identityManagement --disableChecks
For more details please refer the Protractor 5.0 changelog
Note: min node version now is v6.9.x which supports this version of protractor
I'm just getting started with gulp in a .NET 4.6 project and I'm getting the error "Failed to load" in task runner explorer. My gulpfile is:
var gulp = require('gulp');
var inject = require('gulp-inject');
var concat = require('gulp-concat');
var print = require('gulp-print');
gulp.task('default', function () {
console.log('Hello Gulp!');
});
gulp.task('css-task', function () {
var target = gulp.src('./index.html');
var customCssStream = gulp.src(['./bower_components/bootstrap/dist/css/bootstrap.min.css']);
return target
.pipe(inject(customCssStream.pipe(print())
.pipe(concat('appStyles.css'))
.pipe(gulp.dest('./Content/css')), { name: 'styles' }))
.pipe(gulp.dest('./'));
});
And the error is:
gulp-inject/src/inject/index.js:127 startTag, ^ SyntaxError:
Unexpected token , at exports.runInThisContext (vm.js:73:16) at
Module._compile (module.js:443:25) at Object.Module._extensions..js
(module.js:478:10) at Module.load (module.js:355:32) at
Function.Module._load (module.js:310:12) at Module.require
(module.js:365:17) at require (module.js:384:17) at Object.
(.../node_modules/gulp-inject/index.js:4:28) at Module._compile
(module.js:460:26) at Object.Module._extensions..js (module.js:478:10)
I was able to get the "Hello Gulp!" task to run, but once I add gulp-inject I see the problem.
Turns out the problem was related to the version of node.js that Visual Studio 2015 installed not being compatible with node-inject module. After I installed version 4.4.2 of node.js and pointed visual studio at it as described here it now compiles.