Example Code:
Main.ts:
import * as admin from "firebase-admin"
import fetch, { Headers } from "node-fetch";
interface FooPayload {
topic: string,
token: string,
}
exports.foo = functions.https.onCall(async (data, context) => {
if (data != null) {
const payload: FooPayload = {
topic: data.topic,
token: data.token,
}
const url = `https://${location}-${project}.cloudfunctions.net/subscribeToTopic`
await fetch(url, {
method: 'POST',
headers: {
'Content-Type': 'application/json',
},
body: JSON.stringify({
topic: payload.topic,
token: payload.token,
}),
})
}
return null;
});
export const subscribeToTopic = functions.https.onRequest(async (req, res) => {
const payload = req.body as FooPayload;
fetch('https://iid.googleapis.com/iid/v1/' + payload.token + '/rel/topics/' + payload.topic, {
method: 'POST',
headers: new Headers({
'Authorization': 'key=AA...Wp9',
'Content-Type': 'application/json'
})
}).then(response => {
if (response.status < 200 || response.status >= 400) {
res.sendStatus(299)
}
}).catch(error => {
console.error(error);
res.sendStatus(299)
})
return Promise.resolve();
})
When running foo in my app, I encountered a timeout error in the logs:
textPayload: "Function execution took 60051 ms. Finished with status: timeout"
However, switching subscribeToTopic from an HTTP function to a callable function resolves the issue:
exports.subscribeToTopic = functions.https.onCall(async (data, context) => {
fetch('https://iid.googleapis.com/iid/v1/' + data.token + '/rel/topics/' + data.topic, {
method: 'POST',
headers: new Headers({
'Authorization': 'key=AA...Wp9',
'Content-Type': 'application/json'
})
}).then(response => {
if (response.status < 200 || response.status >= 400) {
console.log('Error = ' + response.error);
}
}).catch(error => {
console.error(error);
})
return null;
});
(I may be overlooking a simple error as a TypeScript beginner. Any guidance would be greatly appreciated :)