CODEWITHSUNDEEP
javascriptnode.jsmongodb
emisqwe
emisqwe

Reputation: 69

Check MongoDB status in node js

I need to be able to run '/etc/init.d/mongod status' or 'service mongod status' from wihtin a node js file, in order to store the response in the database.

When I run the above commands in the command line, I get the following response:

● mongod.service - SYSV: Mongo is a scalable, document-oriented database.
   Loaded: loaded (/etc/rc.d/init.d/mongod)
   Active: active (running) since Thu 2017-02-02 08:07:42 UTC; 3h 27min ago
     Docs: man:systemd-sysv-generator(8)
  Process: 793 ExecStart=/etc/rc.d/init.d/mongod start (code=exited, status=0/SUCCESS)
 Main PID: 1027 (mongod)
   CGroup: /system.slice/mongod.service
           └─1027 /usr/bin/mongod -f /etc/mongod.conf

However, I want to include this status in an API response that I write. Therefore, when a user request my API, I want it to return the mongoDB status check as seen above.

I have tried the following ways:

router.get('/status', function(req, res) {

var databaseCheck = service mongod status // not sure how to do this
res.json({
    mongoResponse: '//to have the above status check response here'
});

});

I am new to all this, so any help would be appreciated. I may understand that my thinking is wrong - do let me know if there is a different way of doing this please

Upvotes: 1

Views: 5346

Answers (3)

fuat
fuat

Reputation: 1842

Connect a database and then check connection like db.serverConfig.isConnected(). The below code is a full example.

const app = express();

let dbClient;
let db;
let collection;

MongoClient.connect(configuration.mongoDbUri, { useNewUrlParser: true, poolSize: 30 }, (error, client) => {
  if (error) {
    console.log("Connection failed for some reason. Err: ", error);
    return error;
  }
  db = client.db("myDB");
  dbClient = client;
  collection = db.collection('myCollection');
  app.locals.mongoDb = db;
});

app.get("/status", (req, res) => {
  if (db.serverConfig.isConnected()) {   
    console.log("db.serverConfig.isConnected :", db.serverConfig.isConnected());
    return res.send({ result: true});
  }
  return res.send({ result: false});
});

app.listen(configuration.app.port, error => {});

Upvotes: 2

Vitalii Andrusishyn
Vitalii Andrusishyn

Reputation: 4162

Try code like this into you app:

db.serverConfig.isConnected();

Upvotes: 0

404answernotfound
404answernotfound

Reputation: 771

You can use nodejs child-process module to run a shell command like you would from a terminal. In a terminal you would "service mongod status", in the nodejs child-process you would do the same by putting that command as an argument to the child-process execute function, like so:

const exec = require('child_process').exec;
exec('service mongod status', (error, stdout, stderr) => {
  if (error) {
    console.error(`exec error: ${error}`);
    return;
  }
  console.log(`stdout: ${stdout}`);
  console.log(`stderr: ${stderr}`);
});

Upvotes: 1

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