Question

我已经成功实现了node.js中的一个函数，该函数在firebase云函数中触发，运行如下：

当新用户使用其token_id注册到数据库时，会创建通知密钥。
当同一用户使用其他设备（此处更新token_id）登录到数据库时，token_id将添加到现有的notification_key中。
当用户退出设备时，token_id将从notification_key中删除。

这三点都运行得很棒。

但我的问题是，当notification_key中只有一个token_id，并且用户注销时（它运行正常，直到此处），并且当用户再次登录时，它会给我错误

body: { error: 'notification_key not found' } }

但是，我的notification_key存在！

我得知如果notification_key中没有token_id，则notification_key变为无效。

但是如何知道notification_key中存在的设备数量，以便我可以采取相应的行动。

exports.saveGroups = functions.firestore.document("Users/{user_id}").onWrite((change,context) => {



token_id1 = change.after.data().token_id;
token_email = change.after.data().email;
image1 = change.after.data().image;
name1 = change.after.data().name;
user_id = context.params.user_id;
notification_key = change.after.data().notification_key;
console.log('token_id1: ' + token_id1);
console.log('token_email: ' + token_email);
console.log('Image: ' + image1);
console.log('name: ' + name1);
console.log('user_id: ' + user_id);
var a;





    var headers = {
   'Authorization': 'key = AAAATmJbwHE:APA91bGIEsq0aioIzAa_7g5JvLX1NPU3z1Gkt6vxB2J-I_9IvllwDJaxjmEp5DPw6ZoEBmXfwiYwICrMuE0kQrvxuHTGPc5YKr3i-JNru-o6AHnrAjq4r7iZWmzUuSmPwu8CbR2kXEIq',
   'project_id': '336657629297',
   'Content-Type': 'application/json'
}

if (notification_key === undefined) {
     console.log('key was not present, hence create');
    var options = {
    url: 'https://android.googleapis.com/gcm/notification',
    method: 'POST',
    headers: headers,
    json: {'operation': 'create',
    'notification_key_name': token_email,
    'registration_ids': [token_id1]}
}

var ret = rp(options).then(function (response,body) {
    a = response.notification_key;
   return a;
}).catch(function (error) {
    // POST failed...
    return console.log(error);

}).then(result =>{
  console.log('key: ' + a);
  return db.collection('Users').doc(user_id).set({name:name1,notification_key:a,image:image1,token_id:token_id1,email:token_email});
});
}else if(token_id1 !== undefined){
 console.log('key was present, hence add');
options = {
    url: 'https://android.googleapis.com/gcm/notification',
    method: 'POST',
    headers: headers,
    json: {'operation': 'add',
    notification_key: notification_key,
    'notification_key_name': token_email,
    'registration_ids': [token_id1]}
}

ret = rp(options).then(function (response,body) {
    a = response.notification_key;
   return a;
}).catch(function (error) {
    // POST failed...
    return console.log(error);

}).then(result =>{
  console.log('key: ' + a);
  return db.collection('Users').doc(user_id).set({name:name1,notification_key:a,image:image1,token_id:token_id1,email:token_email});
});
} else{
 console.log('User Logged Out, Remove The Key Now');
 token_idbefore = change.before.data().token_id;
 console.log('token_idbefore: ' + token_idbefore);
options = {
    url: 'https://android.googleapis.com/gcm/notification',
    method: 'POST',
    headers: headers,
    json: {'operation': 'remove',
    notification_key: notification_key,
    'notification_key_name': token_email,
    'registration_ids': [token_idbefore]}
}

ret = rp(options).then(function (response,body) {
    a = response.notification_key;
   return a;
}).catch(function (error) {
    // POST failed...
    return console.log(error);

}).then(result =>{
  console.log('key: ' + a);
  return db.collection('Users').doc(user_id).set({name:name1,notification_key:a,image:image1,email:token_email});
});
} 
  return ret;
 });

如何检测通知密钥node.js

0 个答案: