Retrieving data from an external API via a Groovy Scripted module

1) Using Expert mode, define a resource as the hostname of the api in question, i.e. api.someapinamehere.com. For the purposes of this example, I'm going to make a call to worldtimeapi.org for data on the timezone America/Chicago to determine if daylight savings time is in effect. 

2) Next, choose an available collector and group (optional) and click save. Note: normally you would also add your api user name (if any) and api token as properties, but in this case, it's not necessary. 

2) Next, go to Settings -> LogicModules -> DataSources and click Add -> Datasource

3) Follow the steps below to adjust the DataSource:

4) Insert this script in the text box entitled Groovy Script under Collector Attributes

import com.santaba.agent.groovyapi.expect.Expect;

import com.santaba.agent.groovyapi.snmp.Snmp;

import com.santaba.agent.groovyapi.http.*;

import com.santaba.agent.groovyapi.jmx.*;

import org.xbill.DNS.*;

import groovy.json.*;

//Defines host as the name of the resource added, in this case worldtimeapi.org

def host = hostProps.get("system.hostname");

//Defines the path to endpoint

def endpointUrl = "/api/timezone/America/Chicago"

//Defines port. SSL would require 443.

def port = 80

//Opens connection

def httpClient = HTTP.open(host, port)

//Get response

def response = httpClient.get(endpointUrl)

//Define status code

def statusCode = httpClient.getStatusCode()

//Close connection

httpClient.close()

//Extract values or handle error

if(statusCode == 200){

    response = new JsonSlurper().parseText(httpClient.getResponseBody())

    if(response['dst'] == true){

        status = 1

        println("dstStatus=${status}")

        } else {

            status = 0

            println("dstStatus=${status}")    

            }

    } else {

        println("Your HTTP get request was not successful. StatusCode=${statusCode}")

        }

5) Add Normal datapoint named dstStatus

6) Save Module

7) You will see data painted in your portal for the device worldtimeapi.org under the name of the DataSource you created.

You can learn more about this on this recently updated support doc: https://www.logicmonitor.com/support/terminology-syntax/scripting-support/access-a-website-from-groovy#