require dirs and schedule the removal of temporary FITS files created for SAMP once every minute

yafitsv/app.js

@@ -4,6 +4,7 @@ var favicon = require('serve-favicon');
 var logger = require('morgan');
 var cookieParser = require('cookie-parser');
 var bodyParser = require('body-parser');
+var fs = require('fs');
 
 var index = require('./routes/index');
 var users = require('./routes/users');
@@ -12,9 +13,9 @@ var connectArtemix = require('./routes/connectArtemix')
 var fitsBrowser = require('./routes/fitsBrowser');
 var monitor = require('./routes/monitor');
 var purge = require('./routes/purge');
+const dirs = require('./dirs');
 
 var app = express();
-var yafits_samp = process.env.YAFITS_SAMPDIR;
 
 // view engine setup
 app.set('views', path.join(__dirname, 'views'));
@@ -28,7 +29,7 @@ app.use(bodyParser.urlencoded({ extended: false }));
 app.use(cookieParser());
 app.use(express.static(path.join(__dirname, 'public')));
 app.use(express.static(path.join(__dirname, 'png')));
-app.use('"'+yafits_samp+'"', express.static(path.join(__dirname, '"'+yafits_samp+'"')));
+app.use('"'+dirs.SAMP_DIR+'"', express.static(path.join(__dirname, '"'+dirs.SAMP_DIR+'"')));
 
 app.use(function(req, res, next) {
   res.header("Access-Control-Allow-Origin", "*");
@@ -67,5 +68,17 @@ app.use(function(err, req, res, next) {
   res.render('error');
 });
 
+// SAMP_DIR cleaning of temporary FITS files scheduled
+let regex1 = /spectrum\.[a-f0-9\-]+\.fits$/;
+let regex2 = /averageSpectrum\.[a-f0-9\-]+\.fits$/;
+
+function clearSAMPFITSFiles() {
+  console.log("About to clean spectrum and averageSpectrum FITS files found in " + dirs.SAMP_DIR);
+  fs.readdirSync(dirs.SAMP_DIR).filter(f => regex1.test(f)).map(f => fs.unlinkSync(dirs.SAMP_DIR+"/"+f));
+  fs.readdirSync(dirs.SAMP_DIR).filter(f => regex2.test(f)).map(f => fs.unlinkSync(dirs.SAMP_DIR+"/"+f));
+}
+
+setInterval(clearSAMPFITSFiles, 60000);
+
 console.log("Ready to serve!");
 module.exports = app;