Google Apps Script for Website Monitoring

G
Published in: Google Apps Script

This Google Apps Script will turn Google Docs into a website uptime monitor.

/**   Monitor your Site's Uptime  **/

function isMySiteDown()
{

// Get the URL of the Website to monitor
  var url = SpreadsheetApp.getActiveSheet().getRange("E3").getValue();

// HTTP Response Code of the last server request
  if (!ScriptProperties.getProperty("status")) {
    ScriptProperties.setProperty("status", 200);
  }

  var response, error;

  try {

// Fetch the web page using UrlFetchApp
    response = UrlFetchApp.fetch(url);

  } catch(error)
  {
    insertData(error, -1, "Website down");
    return;
  }

  var code = response.getResponseCode();

// code = 200 means the fetch request was successful
  if (code == 200)
    insertData("Up", code, "Website up");
  else
    insertData(response.getContent()[0], code, "Website down");
}

function insertData(error, code, msg) {

// Ignore if the error message is logged already
  if (ScriptProperties.getProperty("status") == code)
    return;

// Log the server error in a Google Sheet

  var sheet = SpreadsheetApp.getActiveSheet();
  var email = sheet.getRange("E5").getValue();
  var row   = sheet.getLastRow() + 1;

  sheet.getRange(row,1).setValue(new Date());
  sheet.getRange(row,2).setValue(error);
  sheet.getRange(row,3).setValue(code);

// Send an email alert for the downtime

  ScriptProperties.setProperty("status", code);
  MailApp.sendEmail(email, msg, error);
}
Published in: Google Apps Script

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Web Geek, Tech Columnist
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Amit Agarwal

Amit Agarwal is a Google Developer Expert in GSuite and Google Apps Script. He holds an engineering degree in Computer Science (I.I.T.) and is the first professional blogger in India. Read more on Lifehacker and YourStory

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