Website Monitor with Google Docs | The Programmer's Library

The following Google Apps Script will monitor website domains and will send SMS text alerts when any of these sites are down or inaccessible.

Website Monitor HD by Digital Inspiration

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function init() {

if (ScriptApp.getScriptTriggers().length == 0) {

// Set up a monitor that triggers every 5 minutes

ScriptApp.newTrigger("websiteMonitor")

.timeBased().everyMinutes(5).create();

}

function websiteMonitor()

{

var response, error, code, urls;

// The script can monitor multiple website URLs (comma separated)

urls = SpreadsheetApp.getActiveSheet().getRange("B2").getValue();

urls = urls.replace(/\s/g, "").split(",");

for (var i=0; i<urls.length; i++) {

var url = urls[i];

if (!ScriptProperties.getProperty(url)) {

ScriptProperties.setProperty(url, 200);

}

// Trying to connect to the website URL

try {

response = UrlFetchApp.fetch(url);

} catch(error) {

// If URLFetchApp fails, the site is probably down

updateLog(url, -1);

continue;

}

code = response.getResponseCode();

updateLog(url, code);

}

function updateLog(url, code) {

if (ScriptProperties.getProperty(url) == code)

return;

ScriptProperties.setProperty(url, code);

var sheet = SpreadsheetApp.getActiveSheet();

var row = sheet.getLastRow() + 1;

var time = new Date();

var msg = "Down";

if (code == 200)

msg = "Up";

msg = "Website is " + msg + " " + url;

sheet.getRange(row,1).setValue(time);

sheet.getRange(row,2).setValue(msg);

// Send an email notification when the site status changes

var email = sheet.getRange("B3").getValue();

MailApp.sendEmail(email, msg, url);

var now = new Date(time.getTime() + 10000);

// Create an event in Google Calendar with an SMS reminder

if (sheet.getRange("B4").getValue().toLowerCase() == "yes")

CalendarApp.createEvent(msg, now, now).addSmsReminder(0);

}

Published by Amit Agarwal on 09/14/2012