#9 Take screenshots only every 6 hours

plugins/reporting/index.js

@@ -23,7 +23,7 @@ exports.initWebApp = function(options) {
   var count = 0;
 
   Ping.on('afterInsert', function(ping) {
-    if (count > 3) {
+    if (count > 1) {
       return;
     }
     Check.findById(ping.check, function(err, check) {
@@ -34,10 +34,21 @@ exports.initWebApp = function(options) {
         return;
       }
 
+      var output = '/var/log/nodejs/reports/' + check.name + '.png',
+          date = Date.now();
+      if (fs.existsSync(output)) {
+        var stat = fs.statSync(output),
+            fdate = new Date(stat.mtime);
+        if ((fdate + 21600000) > date) {
+          // Only refresh the file if it's old than 6 hours
+          return;
+        }
+      }
+
       // Create the report
       var phantomjs = require('phantomjs-prebuilt'),
           path = require('path'),
-          program = phantomjs.exec(path.join(__dirname, 'phantomjs-script.js'), config['url'], config['basicAuth']['username'], config['basicAuth']['password'], check._id, check.name, 'month', Date.now());
+          program = phantomjs.exec(path.join(__dirname, 'phantomjs-script.js'), config['url'], config['basicAuth']['username'], config['basicAuth']['password'], check._id, output, 'month', date);
 
       count++;
       console.log('PhantomJS started, currently ' + count + ' processes.');

plugins/reporting/phantomjs-script.js

@@ -5,7 +5,7 @@ var page = require('webpage').create(),
     username = args[2],
     password = args[3],
     check    = args[4],
-    name     = args[5],
+    output   = args[5],
     type     = args[6],
     date     = args[7],
     fullUrl  = url + '/dashboard/checks/' + check + '?type=' + type + '&date=' + date;
@@ -13,6 +13,6 @@ var page = require('webpage').create(),
 page.settings.userName = username;
 page.settings.password = password;
 page.open(fullUrl, function() {
-  page.render('/var/log/nodejs/reports/' + name + '.png');
+  page.render(output);
   phantom.exit();
 });