建立需要坚持不懈的 Alexa 技能。
我正在调用数据库以在管理流程之前获取用户详细信息,并且我正在努力让 Node 等待来自 DynamoDB 的响应(使用 Dynasty.js 处理数据库连接)。
我已经尝试了一大堆不同的承诺/回调/节点“阻塞”/异步方法,我能做的最好的就是在用户退出技能时出现响应(在 CloudWatch 日志中)。我真的希望用户配置发生在流程开始时,而不是结束时!
var credentials = {
accessKeyId: process.env.MY_ACCESS_KEY_ID,
secretAccessKey: process.env.MY_SECRET_ACCESS_KEY
};
var dynasty = require('dynasty')(credentials);
var tableName = dynasty.table('dynamoTable');
const promiseFunc = new Promise((resolve,reject)=>{
var myUser = tableName.find(userId);
setTimeout(_=>{resolve(myUser)}, 2000);
});
var checkUser = async function(){
if (true) {
console.log('check, check, 1, 2, 3');
await promiseFunc.then(function(myUser) {
if (myUser) {
console.log("USER FOUND");
console.log(myUser);
} else {
console.log("no user! sigh deeply and start again");
}
})
}
console.log("do more stuff now");
}
exports.handler = function(event, context) {
userId = event.session.user.userId;
const alexa = Alexa.handler(event, context);
// only check the first time, and only once the userId is properly constructed
if (!(userId.startsWith('amzn1.ask.account.testUser')) && (checkedUser != 1)) {
checkedUser = 1;
checkUser();
}
alexa.resources = languageString;
alexa.registerHandlers(newSessionHandlers, startStateHandlers, triviaStateHandlers, helpStateHandlers, stopStateHandlers);
alexa.execute();
};
在脚本的其余部分运行之前,如何让节点等待来自 dynamoDB 的响应...