Execute function daily in Firestore - firebase

Question

I have this function
exports.webhook = functions.https.onRequest((_req: any, res: { send: (arg0: string) => void; }) => {
// It sends notification to a user
});
I want this function to be executed at 3 PM daily. How do I schedule the function to run daily at this time ?
Edit 1
I have a function which sends notification, name of function is sendNotifications, how do I call this function from a URL and pass payload variables title and body
Sample working code:
exports.sendNotifications = functions.firestore
const payload = {
notification: {
title: no_of_followers2,
body: desc + ' Notification body',
icon: 'https://img.icons8.com/material/4ac144/256/user-male.png',
click_action: `https://google.com`,
}
};
... // some code
const subscriber = doc.data().token;
return admin.messaging().sendToDevice(subscriber, payload);
Edit 2
My function:
exports.sendNoti_cal_log = functions.https.onRequest((_req: any, res: { send: (arg0: string) => void; }) => {
const payload = {
notification: {
title: 'Notification Title',
body: 'Notification body',
icon: 'https://img.icons8.com/material/4ac144/256/user-male.png',
click_action: `https://google.com`,
}
};
const subscriber = "evGBnI_klVQYSBIPMqJbx8:APA91bEV5xOEbPwF4vBJ7mHrOskCTpTRJx0cQrZ_uxa-QH8HLomXdSYixwRIvcA2AuBRh4B_2DDaY8hvj-TsFJG_Hb6LJt9sgbPrWkI-eo0Xtx2ZKttbIuja4NqajofmjgnubraIOb4_";
return admin.messaging().sendToDevice(subscriber, payload)
});
Now when I am calling this function from URL, it works but I don't get any response, see screenshot:
Last thing I need is, how do i pass title from parameter and receive it in function.
Edit 3
My working Https function
//-------notification for calllogger
exports.sendNoti_cal_log = functions.https.onRequest((req: any, res: { status: (arg0: number) => { (): any; new(): any; send: { (arg0: { status: string; }): void; new(): any; }; }; }) => {
const payload = {
notification: {
title: 'Notification Title',
body: 'Notification body',
icon: 'https://img.icons8.com/material/4ac144/256/user-male.png',
click_action: `https://google.com`,
}
};
const subscriber = "evGBnI_klVQYSBIPMqJbx8:APA91bEV5xOEbPwF4vBJ7mHrOskCTpTRJx0cQrZ_uxa-QH8HLomXdSYixwRIvcA2AuBRh4B_2DDaY8hvj-TsFJG_Hb6LJt9sgbPrWkI-eo0Xtx2ZKttbIuja4NqajofmjgnubraIOb4_";
return admin.messaging().sendToDevice(subscriber, payload).then((messagingResponse: any) => {
res.status(200).send({status: "OK"})
})
});
Edit 4 (Passing Parameters)
I have passed parameter like this in my function:
exports.sendNoti_cal_log = functions.https.onRequest((req: any, res: { status: (arg0: number) => { (): any; new(): any; send: { (arg0: { status: string; }): void; new(): any; }; }; }) => {
const param1 = req.params.param1;
const payload = {
notification: {
title: 'Notification Title'+param1,
But when I am passing it from URL, it says undefined in the notification:
I am passing it like this -
https://us-central1-fir-crud-5b378.cloudfunctions.net/sendNoti_cal_log?param1=Hello

Answer 1

Update following your second update:
As you will read in the doc:
Always end an HTTP function with send(), redirect(), or end().
Otherwise, your function might continue to run and be forcibly
terminated by the system. See also Sync, Async and Promises.
So you need to do something like:
return admin.messaging().sendToDevice(subscriber, payload)
then(messagingResponse => {
res.status(200).send({status: "OK"});
})
For your question: "how do i pass title from parameter and receive it in function."
It is explained below in my first update ("In order to pass variables to an HTTP Cloud Function....").
Update following your comment and update:
The URL of your Cloud Function will be as follows:
https://us-central1-<project-id>.cloudfunctions.net/webhook
as detailed here in the doc.
In order to pass variables to an HTTP Cloud Function and get them in the CF, you should use the Request object which "gives you access to the properties of the HTTP request sent by the client" (see here in the doc).
For example, you can use the params property as follows to get query string parameters:
exports.webhook = functions.https.onRequest((_req: any, res: { send: (arg0: string) => void; }) => {
const param1 = _req.params.param1;
});
Initial answer:
Your Cloud Function is an HTTPS one which needs to be triggered through an HTTP request made from the "external world" to the Cloud Function platform.
So you need to schedule it from the caller/consumer end (for example a CRON service like https://cron-job.org/en/ which would issue an HTTP request to the corresponding Cloud Function URL, or one of your server, etc.).
If you want the Cloud Function platform to execute a specific Cloud Function at 3 PM daily, you should use a Scheduled Function as follows:
exports.webhook = functions.pubsub.schedule('0 15 * * *')
.timeZone('America/New_York') // Users can choose timezone - default is America/Los_Angeles
.onRun((context) => {
// It sends notification to a user
// return ...;
});
Note that a Scheduled Function is different from an HTTPS one (different trigger mechanism) but the business logic it implements can be the same (in your case, the code to send a notification).