Changeset 36329 for other-projects/bib-stinky/trunk/nodejs-server/express-web-server.js

Timestamp:

2022-07-28T23:47:09+12:00 (21 months ago)

Author:

davidb

Message:

Simple Python script exec/spawn test added

File:

• other-projects/bib-stinky/trunk/nodejs-server/express-web-server.js (modified) (2 diffs)

other-projects/bib-stinky/trunk/nodejs-server/express-web-server.js

@@ -1 +1 @@
 // Setup Express
-const path    = require('path')
+const path      = require('path');
+const { spawn } = require('child_process');
+
 const express = require("express");
 const cors    = require("cors");
+
 
 const app = express();
@@ -25 +28 @@
 
 
+app.get("/python-test", (req, res) => {
+
+    var dataToSend;
+
+    // Spawn new child process to call the python script
+    const python = spawn('python3', ['script1.py']);
+    
+    // Collect data from script
+    python.stdout.on('data', function (data) {
+    console.log('Pipe data from python script ...');
+    dataToSend = data.toString();
+    });
+    
+    // In close event we are sure that stream from child process is closed
+    python.on('close', (code) => {
+    console.log(`child process close all stdio with code ${code}`);
+
+    res.send(dataToSend)    
+    });    
+});
+
+
 app.listen(port, () => {
   console.log(`Started CORS-enabled Express web server running on port ${port}.`);