我写了一个Firebase云函数,但是当我多次删除时,它只能工作70%!而且很慢吗?我做错了什么??
这是我的功能:
exports.deleteQuestion = functions.database.ref('questions_for_mars/{pushId}').onDelete(event => {
const original = event.val()
idQuestion = event.key
authorQuestion = original.author
//console.log('event', original.answers)
admin.database().ref('counter/questions_active').once('value').then((snapshot) => {
var questions_active = snapshot.val()
var updateQuestions = {};
event.child('answers').forEach(child => {
var mars = child.key
updateQuestions['/my_answers/' + mars + '/' + idQuestion] = null
updateQuestions['/mars/' + mars + '/counter/answers_active'] = questions_active - 1
console.log('question active', original)
});
updateQuestions['/counter/questions_active'] = questions_active - 1
updateQuestions['/my_questions/' + authorQuestion + '/' + idQuestion] = null
updateQuestions['/my_questions_send/' + authorQuestion + '/' + idQuestion] = null
updateQuestions['/questions/' + idQuestion] = null
//updateQuestions['/my_answers/' + authorQuestion + '/' + idQuestion] = null
console.log('UPDAYE', updateQuestions)
return admin.database().ref().update(updateQuestions)
})
});
答案 0 :(得分:1)
您必须从回调函数的顶层返回一个承诺,该承诺仅在所有异步工作完成后才能解决。
return admin.database().ref('counter/questions_active').once(...).then(...)
当可以拆除功能并进行清理时,此诺言会向Cloud Functions发出信号。如果您未正确返回承诺,它将在工作完成之前清除。