{Java} Streets

Getting Started with Failsafe Java lib

2023-02-09T00:00:00Z

Every application requires handling failures and retries. Failsafe Java library provides some concise APIs for handling anything. In this post, we will learn how to use this library for our projects.

Getting Started with Maven Build Cache Extension

2023-01-29T00:00:00Z

Apache Maven 4 introduces a new feature - Build Cache Extension. This extension adds incremental build execution and caching capabilities that can noticeably improve the build performance. In this post, we will take a look at how to get started with Build cache extension.

Git Versioner Maven Extension

2023-01-25T00:00:00Z

Maven projects are usually versioned in pom.xml by manipulating version tags. This may require a manual changes to the file. Git Versioner Maven Extension can use the git commit messages to auto-calculate project version without any maintenance to project pom.xml.

Get Started with DataWeave

2022-10-29T00:00:00Z

DataWeave transformation language is on its opensource journey. There is a large ecosystem around it. So where can you start your data transformation journey using DataWeave?

Getting Started with Maven Wrapper

2021-12-30T00:00:00Z

How do you help users for installing Apache Maven required to build your maven-based project? In this post, we will see how Maven Wrapper can simplify this task.

DataWeave 2 playground - Working with multiple Inputs, Vars, Attributes

2021-06-15T00:00:00Z

DataWeave playground is my favorite tool for creating and trying out DataWeave scripts. It is very handy for writing some quick transformation scripts. Real world scripts will often work with more than one inputs, make use of flow variables, or attributes. Can playground work with such scripts? Let's explore it in this post.

DataWeave 2 - Nested Data Structure Traversal and enrichment with state

2021-04-18T00:00:00Z

When a nested data structure is provided, can we traverse and enrich it in dataweave? What if we need to know the state of last transformed record to map next one? Let's check it out in this post.

DataWeave 2 - Finding Quarter of the Year

2021-02-22T00:00:00Z

We often do date manipulations in DataWeave. What if we need to find quarter of the year for a given date? What if quarters start at February? How to do it in DataWeave? Let's explore it in this post.

DataWeave 2 - Transform with flattened keys

2021-02-17T00:00:00Z

What if you have a map of flattened keys like `address.firstName` and need to transform hierarchical data set using that? Can you do that mapping in DataWeave 2? Can this be done with tail-recursion and reusable way? Let's explore it in this post.

DataWeave 2 - Generate Fibonacci sequence

2021-02-05T00:00:00Z

In this post, we will see how to generate a Fibonacci sequence using DataWeave 2.

Faster Feedback with Java, JBang, and TextMate

2020-08-08T00:00:00Z

In previous post "Using Java for scripting, with Jbang", we learned about JBang - a new way of writing scripts with Java. In this post, we will see how we can improve on compile-and-run feedbacks using TextMate editor.

DataWeave 2 - JSON Writer Properties

2020-06-26T00:00:00Z

In this post, we will look at DataWeave's JSON Writer properties. DataWeave 2 is a powerful transformation language. It allows your to convert data from one format to another. When doing these data transformations, you may want to control how the output is written. Let's learn how you can do that.

Introducing - Mule Flow Diagrams [mulefd]

2020-04-17T00:00:00Z

A Mule application can easily have multiple configuration files with number of flows and sub-flows that are spread across those files. When analyzing such mule applications, it can get difficult to see the complete data processing flow and their connections. Have you ever wished to visualize your flow connections? How does a message pass through your application? ♪┏(・o･)┛♪┗ ( ･o･) ┓♪ Introducing - Mule flow diagrams!

Java 14 - Pattern Matching for InstanceOf (Preview)

2020-03-22T00:00:00Z

Java release train is running and delivering new java features faster that the past. Java 14 became GA on March 17, 2020 with some new features. In this post, we will look at a preview feature introduced with Java 14 - Pattern Matching for InstanceOf.

Using Java for scripting, with Jbang

2020-01-22T00:00:00Z

Want to use Java for scripting? Meet - j'bang! A new tool in the wild that makes it easy to use your java code as a script. I have used a custom bash script for writing a cloudflare DDNS update. In this post, we will explore if we can use a java class to do that.

DataWeave 2.2: Compare lists using Arrays module

2019-09-29T00:00:00Z

Mule Runtime 4.2 was released with DataWeave 2.2 version. Lots of new useful functions are added in Arrays module. In this post, we will see how can we compare two arraylists to find matched and unmatched objects.

DataWeave 2.2 and Apache Avro

2019-06-09T00:00:00Z

Mule Runtime 4.2 was released with DataWeave 2.2 version. This adds support for Content (De)Serialization with Apache Avro. In this post, we will take a test drive of DataWeave 2.2 with Apache Avro.

How to deploy existing artifact with Mule Maven Plugin

2019-05-27T00:00:00Z

Mule Maven plugin provides a way to deploy Mule applications. In this tip, we will see how to deploy existing artifacts with mule maven plugin.

How to publish Mule 4 Custom Connector to Anypoint Exchange

2018-06-16T00:00:00Z

Anypoint Exchange allows us to share and discover the assets like API Specifications, Connectors etc on Anypoint Platform. API Specification assets can directly be created on Anypoint Exchange, while the Custom Connectors needs to be published as a part of release process. Anypoint platform provides a Maven plugin to publish these custom connectors to Exchange. In this post, we will see how to do that.

How to connect Firebase Realtime Database using Mule 4

2018-05-26T00:00:00Z

Firebase Realtime Database is a cloud-hosted NoSQL database that stores data in JSON format. It is more frequently used by Mobile applications as a backend data store. In this article, we will learn how we can integrate Mule 4 to connect Firebase Realtime Database and perform data operations.

How to use Secure Properties in DataWeave 2

2018-04-27T00:00:00Z

Mule 4 ships with a Secure Configuration Properties Module that can be used to encrypt properties files or individual properties. In this quick note, we will see how to use Secure properties inside DataWeave 2 or in Mule 4 expression statements.

How to do Mule Deployment with Maven and Jenkins Pipeline

2018-03-17T00:00:00Z

Mule Application Builds and Deployment can be fully managed using Maven. In the development phase, Anypoint Studio makes it easy to manage your application dependencies using Maven. For Deployment tasks, Mule provides are Maven plugin that can help to automate the application deployment to different target runtime environments such as Standalone, CloudHub, ARM, Cluster and more. In this post, we will see how we can leverage Mule Maven plugin to perform deployments manually as well as using Jenkins Pipeline for Mule 3 applications.

How to Run Mule 4 In Docker Container

2018-02-18T00:00:00Z

Recently I updated javastreets/mule docker image to Mule 4.4.0 Kernel (community edition). In this post, we will run a Hello Mule 4 application in Docker container.

How to Extend Mule 4 Runtime using SDK

2018-02-13T00:00:00Z

Mule 4 is packed with enhancements and new features. It comes with a new Mule SDK to extend the Mule Runtime for creating custom Connectors and Modules. Even though the goal of SDK is similar to DevKit used in Mule 3, it differs in how custom Connectors and Modules are created using new Mule SDK. In this post, we will see how to create a custom Module using Mule SDK and use it in our project.

Managing Mule Schedules with Anypoint Runtime Manager

2018-01-18T00:00:00Z

Mule ESB applications allow you to integrate different systems. Frequently, we need to schedule processing at certain time or interval. It’s easy to add a scheduler to the application but it might get tricky to maintain it after deployment. In this article, we will see the challenges in managing applications with schedules and how Anypoint Platform’s Runtime Manager helps us to make life easy.

Batch Processing in Mule 4 vs. Mule 3

2017-10-11T00:00:00Z

In previous Mule Batch series, we learned about the batch processing capabilities of Mule ESB 3. Mule 4 is now available for use as Release Candidate version. It offers huge improvements and changes to Mule 3, such as Introduction of DataWeave 2.0, Reusable Streaming, improved processing strategies, operation based connectors and much more. Mule 4 also has some changes to the way Batch jobs were implemented in Mule 3. In this post, we will look at batch processing in Mule 4.

Using Docker container to run Mule ESB on Raspberry Pi3

2017-10-03T00:00:00Z

Mule runtime is a lightweight, java based enterprise service bus (ESB) and integration platform. It allows the developers to connect with different systems and applications. In the earlier post, we saw how to install Mule ESB on Raspberry Pi3. In this post, we will use Docker container to run Mule on Raspberry Pi3 and deploy a simple application.

Part 3: Mule Batch Processing - MUnit Testing (The Conclusion)

2017-09-16T00:00:00Z

In earlier parts of this series, we looked at the Batch processing capability of Mule and also added some unit tests for our batch. In this last part, we will see how to test record data and message routing through steps.

Part 2: Mule Batch Processing - MUnit Testing

2017-09-13T00:00:00Z

In previous post, we looked at the Batch processing capability of Mule. Just like any other software code, you should unit test mule batch jobs too. In this second part, we will see how we can add unit tests for our batch.

Part 1: Mule Batch Processing - Introduction

2017-09-06T00:00:00Z

Mule Enterprise Edition has capability to process messages in batches. This is useful for processing large number of records or stream of data. It has many components that are very specific to batch processing and can be used to implement business logic. In this blog series, we will talk about batch processing in Mule and unit testing it with MUnit.

DataWeave 2.0 Syntax Changes with examples

2017-08-22T00:00:00Z

Mule 4 was released in early 2018. One of the major change in Mule 4 is, making DataWeave a default expression language over Mule 3's default Mule Expression Language. There are many new exciting feature additions to DataWeave 2.0 along with some syntax changes. In this post, we will focus on the syntax changes in 2.0 when compared to 1.0.

MEL Global Functions and their use

2017-08-13T00:00:00Z

Mule 3.X uses Mule Expression Language (based on MVEL) as default expression language. It is possible to write global MVEL functions that are reusable across Mule application. In this post, we will see how to write global functions and their use.

Connecting Mule ESB to Couchbase NoSQL database

2017-07-31T00:00:00Z

Mule ESB helps us integrate with different systems using connectors. I created a mule connector to integrate with a Couchbase nosql database. In this post, we will see how to use that.

Integrating Mule with data.world and monitor Bigfoot

2017-07-25T00:00:00Z

Mule ESB helps us integrate with different systems. In this example, we will see how to connect to data.world, a data resource repository and retrieve some data.. Let's integrate mule with data.world to monitor bigfoot sightings around us.

Using multiple Java SDK versions on same machine

2017-07-22T00:00:00Z

We often work on more than one java based projects. Every project may need specific java sdk version. We can install all the required versions, but how should we switch between versions without have to set JAVA_HOME each time? In this post, we will look at a awesome tool that makes it possible.

Mule Tip: Unzipping files in Mule ESB

2017-07-21T00:00:00Z

Mule tip to show how to unzip a file using expression component in Mule ESB.

Exposing localhost site to Internet

2017-07-21T00:00:00Z

We all run applications on local server and sometime we may want to expose the sites running on localhost to internet for many reasons like demo or to see how external url's will work. Can we do it without doing actual deployment to remote server?

Installing Mule ESB on Raspberry Pi 3

2017-07-15T00:00:00Z

Mule runtime is a lightweight, java based enterprise service bus (ESB) and integration platform. It allows the developers to quickly connect with different systems and applications. It's so lightweight that it can run on a Raspberry Pi 3.

Installing JDK9 on Max OSX

2017-07-12T00:00:00Z

JDK9 is almost ready for GA release. Let's install JDK9 and see what are the cool features in JDK9.

Continuous Deployment of JBake Site to Github with CircleCI

2017-05-15T00:00:00Z

In this previous post we saw how we can create a static blog using JBake static site generator. Once you have your site ready, next obvious question will be where to host the site? Off course there are many hosting options available.

Baking static blog with JBake

2017-05-14T00:00:00Z

JBake is a very simple java based static site generator which makes it easy to generate static blogs.