increase mobile app verification token TTL from 1 minute to 5 minutes (…

…#2859)

# What this PR does

Trying to connect a mobile app emulator, following the instructions
[here](https://github.com/grafana/oncall-mobile-app#getting-started), to
a cloud stack is incredibly difficult given the 1 minute token TTL. You
need to retrieve the token from the HTTP response in your browser's
inspect panel, plug that token into the `make run` command and cross
your fingers that the emulator starts up in < 45 seconds before the
token expires.

This PR increases the verification token TTL from 1 minute to 5 minutes.

## Checklist

- [x] Unit, integration, and e2e (if applicable) tests updated
- [x] Documentation added (or `pr:no public docs` PR label added if not
required)
- [x] `CHANGELOG.md` updated (or `pr:no changelog` PR label added if not
required)

src/containers/MobileAppConnection/MobileAppConnection.tsx

@@ -27,9 +27,12 @@ type Props = {
 };
 
 const INTERVAL_MIN_THROTTLING = 500;
-const INTERVAL_QUEUE_QR = process.env.MOBILE_APP_QR_INTERVAL_QUEUE
-  ? parseInt(process.env.MOBILE_APP_QR_INTERVAL_QUEUE, 10)
-  : 50000;
+/**
+ * 290_000 = 4 minutes and 50 seconds
+ * QR code token has a TTL of 5 minutes
+ * This means we will fetch a new token just before the current one expires
+ */
+const INTERVAL_QUEUE_QR = 290_000;
 const INTERVAL_POLLING = 5000;
 const BACKEND = 'MOBILE_APP';
 

webpack.config.js

@@ -145,7 +145,6 @@ module.exports.getWebpackConfig = (config, options) => {
        */
       new webpack.EnvironmentPlugin({
         ONCALL_API_URL: null,
-        MOBILE_APP_QR_INTERVAL_QUEUE: null,
       }),
       new webpack.DefinePlugin({
         'process.env': JSON.stringify(dotenv.config().parsed),