Invoke static custom Java methods in Mule 4

This example demonstrates how to use Mule 4's Java method to invoke a custom static method with 2 arguments. The custom class is reused from this post: Define and consume custom Java methods using Dataweave 2.0 in Mule 4.

Tips when working with custom java classes in Mule 4:

1. Include your custom namespace in mule-artifact.json
2. If you are making references to third party libraries, include them as maven dependencies in pom.xml

This is a simple example using a HTTP Listener to listen for POST requests to http://localhost:8081/list-files2

Define and consume custom Java methods with Dataweave 2.0 in Mule 4

With the introduction of a brand-new Java module in Mule 4, it is now possible to invoke Java classes in a more straightforward manner from the flow or in Dataweave 2.0 itself.

Here is a simple demonstration of file manipulation using custom Java classes and methods in Mule Anypoint Studio 7.1. This step-by-step tutorial shows how to:
1. Create a custom java class to list files recursively for a local or shared network path
2. Invoking this class from Mulesoft Dataweave 2.0 transformations, and filter information.

Pre-requisites:

There is a dependency on apache commons-io, log4j and joda-time as I will be reusing some methods for file manipulation.

You can find the jar file or maven references here:

https://mvnrepository.com/artifact/commons-io/commons-io/2.6
https://mvnrepository.com/artifact/joda-time/joda-time
https://mvnrepository.com/artifact/log4j/log4j

1. Create your Mule project and add maven dependency

Download the apache commons-io jar file, or alternatively include the reference in your maven pom.xml file.

For this example, I am going to include it as a maven dependency. Copy and paste the code below and include it between the dependencies node in pom.xml, before the closing node:

Mulesoft Flow to create Service Request in ServiceNow

This article describes how you could create a Mulesoft flow to create a Service Request in Service-Now.

First of all, you will need to have access to a Service-Now Development instance, for example:

https://dev52286.service-now.com

* Replace with your company's development instance, if needed.

You will need a username and password to connect to this instance.

Go to https://developer.servicenow.com/ and register for a new account for testing purposes.

Once logged in, go to the MANAGE tab, and select Instance.

Create a new instance, and take note of the URL, admin username and password.

* The instance will be removed if there's no activity in 10 days.

For OOTB requests, there is typically one or more catalog items attached to a request.

Login to your service-now instance, in my case it's https://dev52286.service-now.com

Browse your service catalog and determine what kind of request you would like to make.

NodeJS httpServer make REST calls based on querystring parameter

Has dependencies on request, which you could install using the npm command.
In the example below it is a simple web application listening on localhost port 8080.
If the employeeId querystring parameter is detected, regardless of the path, it will make a call to a  RESTful service to retrieve a (fictional) worker information... you get the idea.

 // Include the request library for Node.js. This is not part of native libary.    
 var request = require('request');  
 var http = require('http');  
 var url = require('url');  
 http.createServer(function (req, res) {  
   res.writeHead(200, {'Content-Type': 'text/html'});  
      res.write('Start querying<br />');  
      var u = url.parse(req.url, true);  
      var queryData = u.query;  
      if (queryData.employeeId) {  
           console.log('employeeId: ' + queryData.employeeId);  
           // Sample URL call: http://localhost:8080/anything?employeeId=999  
           // Basic Authentication credentials    
           var username = "username";   
           var password = "password";  
           var authenticationHeader = "Basic " + new Buffer(username + ":" + password).toString("base64");  
           request.get(    
           {  
                uri : "https://service.domain.com/WorkerSnapshot?$format=JSONP&EmployeeID=" + queryData.wwid,  
                rejectUnauthorized: false,  
                json: true, // indicates the returning data is JSON, no need for JSON.parse()  
                headers : { "Authorization" : authenticationHeader }   
           },  
           function (error, response, body) {  
                res.write(body);  
           }  
           );            
      }  
 }).listen(8080);  

Powershell code (local) to list user AD memberships

Powershell code snippet which you could run using PowerShell ISE window. Do not need to install additional modules, unlike Get-ADUser

 # Create searcher object  
 $Domain = "sub.domain.com"  
 $ADsPath = [ADSI]"LDAP://$Domain"  
 $searcher = New-Object System.DirectoryServices.DirectorySearcher($ADsPath)  
 $searcher.SearchScope = "Subtree"  
 $searcher.PageSize = 1000  
 # Restrict properties to load  
 # $searcher.PropertiesToLoad.Add("name")  
 # $searcher.PropertiesToLoad.Add("sAMAccountName")  
 # $searcher.PropertiesToLoad.Add("employeeID")  
 # $searcher.PropertiesToLoad.Add("mail")  
 # $searcher.PropertiesToLoad.Add("userPrincipalName")  
 $searcher.PropertiesToLoad.Add("memberOf")  
 
 $searcher.Filter = "(&(objectClass=User)(samAccountName=username))"   
 $colResults = $searcher.FindOne()  
 
 $objItem = $colResults.Properties  
 $objItem.Item("memberOf") | foreach-object {  
   write-host $_  
 }