我在firebase中编写了一个 Cloud 函数,它向带有令牌的设备发送通知,这些令牌作为文档存储在集合中:
const functions = require('firebase-functions');
const admin = require('firebase-admin');
admin.initializeApp();
exports.sendDMNotification = functions.firestore.document('/dm_threads/{thread_id}/messages/{message_id}')
.onCreate((snapshot, context) => {
const newMessage = snapshot.data();
const senderName = newMessage.authorName;
const senderID = newMessage.authorUID;
const messageText = newMessage.message;
const recipientName = newMessage.recipientName;
const recipientID = newMessage.recipientUID;
const timestamp = newMessage.timestamp;
console.log(senderName + " " + senderID + " " + messageText + " " + recipientName + " " + recipientID + " " + timestamp.toString());
let deviceTokenQuery = admin.firestore().collection(`/Users/${recipientID}/device_tokens/`);
return deviceTokenQuery.get().then(querySnapshot => {
console.log('deviceTokenQuery returned');
let tokens = querySnapshot.docs;
console.log('1');
const notificationPromises = tokens.map(token => {
console.log('2');
let token_id = token.tokenID.toString();
console.log('3');
const payload = {
notification: {
title: senderName,
body: messageText,
icon: "default"
}
};
return admin.messaging().sendToDevice(token_id, payload)
});
console.log('4');
return Promise.all(notificationPromises);
});
});
仅显示“deviceTokenQuery返回”,“1”和“4”日志语句 . 我是否有语法问题或者我没有正确使用这些方法?