Help to send email when node goes down

jkandasa

I received an email from @naguraob for example script to send an email with node last seen details. I thought when we post here, will helpful for other too.

Original request:

Can you please help me out with some suggestion on the following, I need to send out an email whenever a node goes down, and another email with the last seen details of the nodes. It would be handy if you can provide some direction on this and I will start with it and contact you in case I run into any issues. Thank You.

@naguraob here is the solution to send an email:

Use case #1: send an email when a node goes down
This is straight forward. You have to create an operation to send an email. and setup a rule to trigger this operation when your node goes down.
0_1496995510873_upload-93591893-a725-4a9c-811f-ba237aa0050c

0_1496995484023_upload-5aea0eef-9776-417e-9caa-82020add80ef

Use case #2: Send node last seen status often:
For this, we have to create a script

JavaScript

// Import required packages for our coding. JavaImporter is used to import packages. 
// You can import any number of packages separated with comma.
var myImports = new JavaImporter(java.io, java.lang, java.util,java.lang.Object);

// Add our imports with loop
with(myImports) {
  // get list of nodes
  // Create a HashMap to add our query filter values.
  var options = new HashMap();
  //Sort by lastSeen.
  options.put("orderBy", "lastSeen");
  //Order by descending
  options.put("order", "desc");
  //Page limit
  options.put("pageLimit", new Long(-1)); // -1 to list all the nodes
  //Get nodes
  var nodes = mcApi.node().getAll(options);
  
  //Email details
  var toAddresses = "abc@xyz.com,abcd@xyz.com";
  var subject = "[MyController] Nodes last seen status";
  var message = "\
          <!DOCTYPE html> \
          <html>\
            <style>body {font-size: 12px;}</style>\
            <body>\
              <b>Dear User,</b>\
              <br>\
              <br>Nodes last seen details\
              <br>\
              <br>\
                <table border='0'>\
                <thead><th>Gateway</th><th>Name</th><th>EUI</th><th>State</th><th>Battery level</th><th>Last seen</th></thead>";
  for (index = 0; index < nodes.data.length; index++) {
    message += "<tr><td>"+nodes.data[index].getGatewayTable().getName()+"</td><td>"+nodes.data[index].getName()+"</td><td>"+nodes.data[index].getEui()+"</td><td>"+nodes.data[index].getState()+"</td><td>"+nodes.data[index].getBatteryLevel()+"</td><td>"+mcApi.utils().friendlyTime(nodes.data[index].getLastSeen())+"</td><tr>";
  }

  message += "</table>\
              <br>\
              <br>-- Powered by <a href='http://www.MyController.org'>www.MyController.org</a>\
            </body>\
          </html>";
  //send email
  mcApi.utils().sendEmail(toAddress, subject, message);
}

Note: Kindly use latest snapshot version from here

Help to send email when node goes down browsing

JavaScript