Firebase可调用函数响应不起作用

Question

I have a simple firebase functions script setup (running firebase-admin version 8.0 and firebase-functions version 2.3.1):

const functions = require('firebase-functions');
const cors = require('cors')({
    origin: true,
});

//Gets and returns a user's ip address
exports.getIPAddress = functions.https.onRequest((req, res) => {
    let ipAddress = req.headers['fastly-client-ip'] || req.connection.remoteAddress;
    ipAddress = ipAddress.toString();
    console.log('Fetched IP Address: ' + ipAddress);
    return cors(req, res, () => {
        res.status(200).send(ipAddress);
    });
});

The function's goal is simply to return to user's IP address. It logs fine in the functions console, no errors.

Here is the client code:

var getIPAddress = mainFirebase.functions().httpsCallable('getIPAddress');
function testIP() {
    getIPAddress().then(function(result) {
        console.log(result.data.text)
    });
}

However, the console says that 'result' is not a valid JSON object.

I've tried using https.onCall which somebody else on the internet recommended, however, the console says that function doesn't exist.

Any help getting the response to work properly would be greatly appreciated!

Answer 1

Your function is a regular HTTP type function. However, your client code is attempting to call it as if it were a callable type function. That's not going to work. If you want to invoke a callable type function, you'll have to implement the function according to the documentation .

If you need to keep the function as an HTTP type function, you can't use the Firebase client SDK to invoke it. Just invoke it as if it were any other type of HTTP endpoint .

Answer 2

For Callable functions. You need to create a function like:

exports.addMessage = functions.https.onCall(
  async (data, context) => {
    // context contains the user info.
  }
);

And on your front-end you can call them like:

firebase.functions().httpsCallable('addMessage');
addMessage({text: messageText}).then(function(result) {
  // Read result of the Cloud Function.
  var sanitizedMessage = result.data.text;
}).catch(function(error) {
  // Getting the Error details.
  var code = error.code;
  var message = error.message;
  var details = error.details;
  // ...
});

As you are calling an https message. You can also use the SDK to call https methods. But make sure you are handling CORS on your server.

In your client. Just use the http client.

this.http.post method with the function url.