Extracted the release function -> getReleaseInformation in the shell.js controller

server/controller/shell.js

@@ -13,6 +13,24 @@ const mapLines = (data) => {
     return infoData;
 }
 
+module.exports.getReleaseInformation = (session, endSession = true) => {
+    let infoData = {};
+
+
+    return new Promise((resolve, reject) => {
+        session.exec("cat /etc/os-release", (err, stream) => {
+            stream.on("close", (code) => {
+                if (endSession) session.end();
+                if (code === 0) return resolve(infoData);
+
+                reject("Error while checking distro");
+            }).on("data", (data) => {
+                infoData = {...infoData, ...mapLines(data)};
+            });
+        });
+    });
+}
+
 module.exports.checkServer = async ({hostname, username = "root", password, privateKey}) => {
     const port = hostname.split(":")[1] || 22;
     hostname = hostname.split(":")[0];
@@ -21,19 +39,11 @@ module.exports.checkServer = async ({hostname, username = "root", password, priv
 
     return new Promise((resolve, reject) => {
         session.on("ready", () => {
-            let infoData = {};
+            this.getReleaseInformation(session).then((infoData) => {
-
+                resolve(infoData);
-            session.exec("cat /etc/os-release", (err, stream) => {
+            }).catch((err) => {
-                stream.on("close", (code) => {
+                reject(err);
-                    session.end();
-                    if (code === 0) return resolve(infoData);
-
-                    reject("Error while checking distro");
-                }).on("data", (data) => {
-                    infoData = {...infoData, ...mapLines(data)};
-                });
             });
-
         }).connect({host: hostname, port, username, password, privateKey, readyTimeout: 5000}).on("error", () => {
             reject("Error while connecting to server");
             session.end();