AWS lambda api Postgres not won’t insert - node.js

Question

I have the following AWS lambda handler:
exports.handler = async (event, data) => {
var AWS = require('aws-sdk/global');
const awsParamStore = require('aws-param-store');
const {
Pool
} = require('pg');
var host;
await awsParamStore.getParameter('testing-main-rds-url', { //get database host from AWS
region: 'us-east-1'
})
.then((parameter) => {
host = parameter.Value
});
var signer = await new AWS.RDS.Signer({
region: 'us-east-1',
username: 'developer',
hostname: host,
port: 5432
});
var token = await signer.getAuthToken({}); //get token from AWS
const db = await new Pool({
user: "developer",
host: host,
database: "main",
password: token,
port: 5432,
ssl: true,
});
const query = `INSERT INTO crm.user_crm
(u_id,username)
VALUES ($1,$2)`;
const values = [event.u_id, event.username];
db.connect((err, client, release) => {
if (err) {
throw("Error acquiring client.", err.stack);
} else {
client.query(query, values, (err, result) => {
release();
if (err) {
throw("Error executing query.", err.stack);
return ;
} else {
console.log("INSERT DONE");
db.end()
return {
statusCode: 200
};
}
})
}
})
};
This code will take in data and add it to a database.
When I run it on my computer with console.log(require('./index').handler(data)); it works perfectly and inserts the record. When I run it from lambda it returns nothing and doesn’t insert a record. Any help would be appreciated.

Answer 1

You mixing async/await with callback style. Your lambda function will finish before the query finish.
As example in pg document it supports async/await:
Instead of db.connect((err, client, release) => {...
const res = await pool.query(query, values);
console.log("INSERT DONE");
await pool.end()
return {
statusCode: 200
};