[英]Receiving returned data from firebase callable functions
我在玩iOS中的Callable HTTPS功能。 我創建並部署了以下功能:
export const generateLoginToken = functions.https.onCall((data, context) => {
const uid = data.user_id
if (!(typeof uid === 'string') || uid.length === 0) {
throw new functions.https.HttpsError('invalid-argument', 'The function must be called with one argument "user_id" ');
}
admin.auth().createCustomToken(uid)
.then((token) => {
console.log("Did create custom token:", token)
return { text: "some_data" };
}).catch((error) => {
console.log("Error creating custom token:", error)
throw new functions.https.HttpsError('internal', 'createCustomToken(uid) has failed for some reason')
})
})
然后我從iOS應用程序調用該函數,如下所示:
let callParameters = ["user_id": userId]
self?.functions.httpsCallable("generateLoginToken").call(callParameters) { [weak self] (result, error) in
if let localError = self?.makeCallableFunctionError(error) {
single(SingleEvent.error(localError))
} else {
print("Result", result)
print("data", result?.data)
if let text = (result?.data as? [String: Any])?["text"] as? String {
single(SingleEvent.success(text))
} else {
let error = NSError.init(domain: "CallableFunctionError", code: 3, userInfo: ["info": "didn't find custom access token in the returned result"])
single(SingleEvent.error(error))
}
}
}
我在日志中可以看到該函數是使用正確的參數在服務器上調用的,但是我似乎無法獲得從該函數返回到應用程序中的數據。 盡管我從雲函數return {text: "some_data"}
,但由於某種原因, result.data
值似乎nil
。 怎么會?
哎呀! 問題是我忘了從雲函數返回實際的承諾。 此功能正在工作:
export const generateLoginToken = functions.https.onCall((data, context) => {
const uid = data.user_id
if (!(typeof uid === 'string') || uid.length === 0) {
throw new functions.https.HttpsError('invalid-argument', 'The function must be called with one argument "user_id" ');
}
return admin.auth().createCustomToken(uid)
.then((token) => {
console.log("Did create custom token:", token)
return { text: "some_data" };
}).catch((error) => {
console.log("Error creating custom token:", error)
throw new functions.https.HttpsError('internal', 'createCustomToken(uid) has failed for some reason')
})
})
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