added API structure

index.js

+"use strict";
 
 const isolateBackend = require('./isolate')
 const { spawn } = require('child_process');
 const libSupport = require('./lib')
 const fs = require('fs')
+const express = require('express')
+const bodyParser = require('body-parser')
+const fileUpload = require('express-fileupload');
+const redis = require('redis')
+
+let client = redis.createClient();
+
+const app = express()
+app.use(bodyParser.urlencoded({ extended: false }))
+app.use(bodyParser.json())
+app.use(fileUpload())
+
+
+const port = 8080
+
+app.post('/serverless/deploy', (req, res) => {
+    
+    let runtime = req.body.runtime
+    let file = req.files.serverless
+
+    let functionHash = file.md5
+    console.log("sa");
+    
+    file.mv(__dirname + "/test/" + functionHash, function (err) {
+        if (err) {
+            console.log(err);
+            res.send("error").status(400)
+        }
+        else {
+            if (runtime === "container") {
+                deployContainer('./test/', functionHash)
+                    .then(() => {
+                        res.json({
+                            status: "success",
+                            function_id: functionHash
+                        })
+                    })
+                    .catch(err => {
+                        res.json({
+                            status: "error",
+                            reason: err}).status(400)
+                    })
+            } else {
+                res.json({
+                    status: "success",
+                    function_id: functionHash
+                })
+            }
+        }
+    })
+    
+})
+
+app.post('/serverless/execute/:id', (req, res) => {
+
+    let runtime = req.body.runtime
+    let functionHash = req.params.id
+    if (runtime === "isolate")
+        runIsolate('./test/' + functionHash).then(() => res.json({status: "success"}))
+    else if (runtime === "process")
+        runProcess('./test/' + functionHash).then(() => res.json({ status: "success" }))
+    else if (runtime === "container")
+        runContainer(functionHash).then(() => res.json({ status: "success" }))
+    else {
+        res.send("unknown")
+        return
+    }
+})
 
 
 function runIsolate(filename) {
+    return new Promise( (resolve, reject) => {
         let timeStart = Date.now()
         let {isolate, context} = isolateBackend.createIsolate();
-    // Let's see what happens when we try to blow the isolate's memory
+        
         fs.readFile(filename, 'utf-8',(err, data) => {
             
+            if (err)
+                reject(err);
             isolate.compileScript(data).then(script => {
             script.run(context)
             .then(result => {
                 console.log(result);
                 let timeDifference = Math.ceil((Date.now() - timeStart))
                 console.log("isolate time taken: ",  timeDifference);
+                resolve();
             });
-        })
+            }).catch(err => {reject(err)})
         });
+    });
+    
 }
 
 function runProcess(filename) {
+    return new Promise((resolve, reject) => {
         let timeStart = Date.now()
         const process = spawn('node', [filename]);
 
@@ -34,17 +110,33 @@ function runProcess(filename) {
 
         process.stderr.on('data', (data) => {
             console.error(`stderr: ${data}`);
+            reject(data);
         });
 
         process.on('close', (code) => {
             console.log(`child process exited with code ${code}`);
+            resolve();
         });
+    })
     
 } 
 
-function runContainer(path) {
+function deployContainer(path, imageName) {
+    return new Promise((resolve, reject) => {
         let buildStart = Date.now()
-    let imageName = libSupport.makeid(10)
+
+        fs.writeFile(__dirname + '/test/Dockerfile',
+            `FROM node:latest
+            WORKDIR /app
+            COPY package.json /app
+            RUN npm install
+            COPY . /app
+            
+            CMD node ${imageName}`
+            , function (err) {
+                if (err) reject(err);
+                else {
+                    console.log('Dockerfile created');
                     const process = spawn('docker', ["build", "-t", imageName, path, "-q"]);
 
                     process.stdout.on('data', (data) => {
@@ -60,6 +152,17 @@ function runContainer(path) {
                         console.log(`child process exited with code ${code}`);
                         let timeDifference = Math.ceil((Date.now() - buildStart))
                         console.log("image build time taken: ", timeDifference);
+                        resolve();
+                    });
+                }
+        });
+    })
+}
+
+function runContainer(imageName) {
+    console.log(imageName);
+    
+    return new Promise((resolve, reject) => {
         let timeStart = Date.now()
         const process = spawn('docker', ["run", "--name", imageName, imageName]);
 
@@ -71,13 +174,14 @@ function runContainer(path) {
 
         process.stderr.on('data', (data) => {
             console.error(`stderr: ${data}`);
+            reject(data);
         });
 
         process.on('close', (code) => {
+            resolve(code);
         })
-    });
+    })
+    
 }
 
-runIsolate('./test/script.js');
-runProcess('./test/script.js');
+app.listen(port, () => console.log(`Server listening on port ${port}!`))
\ No newline at end of file
-runContainer("test/");
\ No newline at end of file

package.json

@@ -4,12 +4,16 @@
   "description": "",
   "main": "index.js",
   "scripts": {
-    "test": "echo \"Error: no test specified\" && exit 1"
+    "test": "echo \"Error: no test specified\" && exit 1",
+    "start": "node index.js"
   },
   "author": "",
   "license": "ISC",
   "dependencies": {
+    "body-parser": "^1.19.0",
     "express": "^4.17.1",
-    "isolated-vm": "^3.0.0"
+    "express-fileupload": "^1.1.6",
+    "isolated-vm": "^3.0.0",
+    "redis": "^2.8.0"
   }
 }