How to passing result of http request inside async in ExpressJS? - express

Question

I have below code
async send(user, data) {
const postData = {
'data': 'john',
'secret': 'secret'
};
const dataJson = JSON.stringify(postData);
const options = {
hostname: 'example.com',
path: '/send',
method: 'POST',
headers: {
'Content-Type': 'application/json',
'Content-Length': dataJson.length
}
};
const req = https.request(options, (res) => {
let data = '';
console.log('Status Code:', res.statusCode);
res.on('data', (chunk) => {
data += chunk;
});
res.on('end', () => {
console.log('Body: ', JSON.parse(data));
});
}).on("error", (err) => {
console.log("Error: ", err.message);
});
req.write(dataJson);
req.end();
//---------------
let postResult = // HERE I WANT TO GET WHAT HTTP POST REQUESTED (e.g dataJson.body?)
//---------------
let result;
try {
result = await this.users.collection('users').updateOne(
{
_id: user
},
{
$set: {
// I WANT TO USE THAT HERE
data1 : postResult,
data2 : data2
}
},
{ maxTimeMS: consts.DB_MAX_TIME_USERS }
);
} catch (err) {
log.error('DB', 'UPDATEFAIL id=%s error=%s', user, err.message);
err.message = 'Database Error, failed to update user';
err.code = 'InternalDatabaseError';
throw err;
}
return { success: true };
}
How to get those data to outside variable?
I almost crazy about this, been searching on google and not found anything
I am using express and native-http to make http request, are there any native-curl maybe?
thank you very much for all the help

Answer 1

Your current code is using callback to retrieve result, so you can initiate data variable to outside callback function
let data = '';
const req = https.request(options, (res) => {
console.log('Status Code:', res.statusCode);
res.on('data', (chunk) => {
data += chunk;
});
res.on('end', () => {
console.log('Body: ', JSON.parse(data));
});
})
And also there are other easier way to make http request with nodejs. you can check axios that support Promise and async/await.
you can use syntax like this with axios
const response = await axios.get('/user?ID=12345');
way more easier.