[英]How can i rewrite the axios promise module with only async/await syntax?
How can I rewrite the Axios promise module with only async/await syntax?如何仅使用 async/await 语法重写 Axios promise 模块? Please I'm new to Axios & promise, async syntax => what should i put inside the.push()?
请我是 Axios 和 promise 的新手,异步语法 => 我应该在.push() 中放什么?
const axios = require("axios");
const _ = require("lodash");
const queue = require("queue");
// To control the request rate
const GetDataQueue_B = queue({ autostart: true, concur: 1 });
// someone's codes
const getDATA = () => {
return new Promise((resolve, reject) => {
// To make sure only one request call
GetDataQueue_B.push(
async () => {
try{
const res = await axios.get(`${whichAPI}/api`);
resolve(
_.map(
_.get(res, "data.infor"),
obj => ({
quotes:obj.quotes,
author:boj.author,
})
)
);
}catch(e) {reject(e);console.log(e);}
}
);
});
below is my try: => what should i put inside the.push()?下面是我的尝试: => 我应该在.push() 中放什么?
const getDATA_1 = async () => {
try{
const res = await axios.get(`${whichAPI}/api`);
const data = _.map(
_.get(res, "data.infor"),
obj => ({
quotes:obj.quotes,
author:boj.author,
})
)
GetDataQueue_B.push(); // => what should i put inside the .push() method?
return data;
}catch(e){console.log(e);}
};
queue
isn't the best choice here for clean code because while it allows pushing functions that return a promise, it itself doesn't return a promise. queue
在这里不是干净代码的最佳选择,因为虽然它允许推送返回 promise 的函数,但它本身不会返回 promise。
I recommend using p-limit
instead.我建议改用
p-limit
。 It works like this:它是这样工作的:
const pLimit = require("p-limit");
const myQueue = pLimit(5); // Allow only 5 things running in parallel
const promise = myQueue(async () => { /* stuff */ });
// promise will resolve once the passed function ran, and will return its
// result.
So, the code then looks like this:因此,代码如下所示:
const axios = require("axios");
const _ = require("lodash");
const pLimit = require("p-limit");
// To control the request rate
const GetDataQueue_B = pLimit(1);
// someone's codes
const getDATA = () => GetDataQueue_B(async () => {
const res = await axios.get(`${whichAPI}/api`);
return _.map(
_.get(res, "data.infor"),
obj => ({
quotes: obj.quotes,
author: boj.author,
})
)
);
});
I removed the try
/ catch
because it didn't really do anything - an error here would reject the resulting promise anyway.我删除了
try
/ catch
,因为它并没有真正做任何事情——这里的错误无论如何都会拒绝生成的 promise。
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.