Synchronous request in Node.js with async.retry - node.js

Question

nodejs version v10.14.2
OS win7 sp1 64bit
I need the following four lines of code to execute in order
var res2 = await fetchData(url_2, file_path_2);
await console.log('step one.');
var res1 = await fetchData(url_1, file_path_1);
await console.log('step two.');
However, the actual order of their execution is
step one.
step two.
........
........
How can we achieve synchronous execution of these four lines of codes?
var https = require('https');
var fs = require('fs');
var request = require('request');
var async = require("async");
(async() => {
var url_1 = 'https://aaa.bbb.ccc.com';
var url_2 = 'https://library.harvard.edu/';
var file_path_1 = fs.createWriteStream('./intelcenter/aaa.bbb.ccc.txt');
var file_path_2 = fs.createWriteStream('./intelcenter/harvard.txt');
var res2 = await fetchData(url_2, file_path_2);
await console.log('step one.');
var res1 = await fetchData(url_1, file_path_1);
await console.log('step two.');
})();
async function fetchData(url,locpath) {
return new Promise(function (resolve) {
async.retry(request(url).pipe(locpath), function(err, result) {
resolve(result);
});
});
}

Answer 1

Synchronous Code
I have added callback function for request module and passing the result via next method.
By Default async.retry will make 5 retry.
var fs = require("fs");
var request = require("request");
var async = require("async");
(async () => {
var url_1 = "https://google.com";
var url_2 = "https://library.harvard.edu/";
var file_path_1 = fs.createWriteStream("./intelcenter/aaa.bbb.ccc.txt");
var file_path_2 = fs.createWriteStream("./intelcenter/harvard.txt");
var res2 = await fetchData(url_2, file_path_2);
console.log("step one." + res2);
var res1 = await fetchData(url_1, file_path_1);
console.log("step two." + res1);
})();
function fetchData(url, locpath) {
console.log("inside fetchData");
return new Promise(function(resolve, reject) {
async.retry(
function(next) {
request(url, function(err, result) {
if (err) {
console.log(err);
}
console.log("inside request");
next(result);
}).pipe(locpath);
},
function(result) {
resolve(result);
}
);
});
}
To know more about async.
Synchronous Code without async.retry
var fs = require("fs");
var request = require("request");
(async () => {
var url_1 = "https://google.com";
var url_2 = "https://library.harvard.edu/";
var file_path_1 = fs.createWriteStream("./intelcenter/aaa.bbb.ccc.txt");
var file_path_2 = fs.createWriteStream("./intelcenter/harvard.txt");
var res2 = await fetchData(url_2, file_path_2);
console.log("step one.");
var res1 = await fetchData(url_1, file_path_1);
console.log("step two.");
})();
function fetchData(url, locpath) {
console.log("inside fetchData");
return new Promise(function(resolve, reject) {
request(url, function(err, result) {
if (err) {
console.log(err);
}
console.log("got result");
result=JSON.stringify(result);
locpath.write(result);
resolve(result);
});
});
}