This is Part 2 of Testing Stream Applications. In Part 1 we implemented and tested the core function needed for our sample couchbase-sink application. The tests at the function level covered expected success and error scenarios and relied on Testcontainers to provision a Couchbase cluster. This post assumes you have read Part 1 and continues where it left off.

Couchbase Sink

In Part 1 we verified that the function we wrote for upserting data into Couchbase works as expected. We can now use the function, exposed as a java.util.Consumer, to implement a sink to use in a data pipeline built with…

This post is part of a blog series that explores the newly redesigned Spring Cloud Stream applications based on Java Functions. This episode, presented in two parts, explores strategies for testing functions used to implement stream applications. We will pay special attention to functions that integrate with external resources, which presents additional testing challenges. Such is the case with most of the pre-packaged source and sink applications. To illustrate this, we will walk through a sample couchbase-sink application. Here in Part 1, we will focus on the core function on which the sink…

On behalf of the community, I am pleased to announce that Release Candidate 1 (RC1) of the Spring Cloud 2020 Release Train is available today. You can find the release in the Spring Milestone repository. See the 2020 release notes for more information.

Notable Changes in the 2020 Release Train

This release requires Spring Boot 2.4.0.

See the wiki for a list of all breaking changes in this release train.

See all of the included issues and pull requests at the Github project.

Spring Cloud Contract

The Gradle plugin creates a separate classpath when executing tasks.

Spring Cloud Kubernetes

• Packages and starters have been refactored to accommodate new Kubernetes Java Client implementations
• Starters have been added for Kubernetes Java Client implementations (PR)
…

Hi, Spring fans! In this special midweek installment I correct a mistake I made last week when I inadvertently released the episode featuring Dion Almaer, with the interview I conducted with Spring Batch co-lead Mahmoud Ben Hassine. This is the actual episode with Mahmoud Ben Hassine, with the correct title and everything! Enjoy!

Hi, Spring fans! In this special midweek installment I (Josh Long) correct a mistake I made last week when I inadvertently released the episode featuring open-web legend Dion Almaer with the interview I conducted with the inspirational and oh-so-amazing Spring Batch co-lead Mahmoud Ben Hassine. This is the actual episode with Dion Almaer (@dalmaer) who is known for so many contributions to the Java ecosystem and beyond. I know him as a former editor in chief of TheServerSide.com, but you may know him for his work championing the open web at Palm, Walmart, and Google, and many more.

This article is part of a blog series that explores the newly redesigned Spring Cloud Stream applications based on Java Functions.

Here are all the previous parts of this blog series.

• Introducing Function Based Streaming Applications

• Function Composition with Streaming Applications

• How to Build a Supplier and Source Application

• How to Build a Consumer and Sink Application

• Build and Run a Simple Stream Application

• Case Study: HTTP Request Function and Processor

• Case Study: File Source and MongoDB Sink

• Case Study: Relational Database Source and File Sink

• Case Study: Remote File Ingest with Spring Cloud Data Flow

• Case Study: Aggregator Function and Processor

• Case Study: Elasticsearch sink

…

Yes, we're going reactive!

On behalf of the team and everyone that contributed, I am pleased to announce that the first release candidate of Spring Statemachine 3.0.0 has been released and is available from our milestone repository.

Highlights of this release include:

• Relevant api's working with statemachine now have reactive methods.
• From a functional point of view this release is equivalent what's in 2.2.x, 2.3.x and 2.4.x branches apart from reactive changes.
• We've chosen to align with recently released Spring Boot 2.4.1.

Internally everything is basically working atop of reactive…

On behalf of the team and everyone who has contributed, I'm happy to announce that Spring Boot 2.4.1 has been released and is now available from Maven Central.

This release includes 59 bug fixes, documentation improvements, and dependency upgrades. Thanks to all those who have contributed with issue reports and pull requests.

How can you help?

If you're interested in helping out, check out the "ideal for contribution" tag in the issue repository. If you have general questions, please ask on stackoverflow.com using the spring-boot tag or chat with the community on Gitter.

Project Page | GitHub | Issues | Documentation | Stack Overflow | …

On behalf of the team and everyone who has contributed, I'm happy to announce that Spring Boot 2.3.7 has been released and is now available from Maven Central.

This release includes 35 bug fixes, documentation improvements, and dependency upgrades. Thanks to all those who have contributed with issue reports and pull requests.

How can you help?

If you're interested in helping out, check out the "ideal for contribution" tag in the issue repository. If you have general questions, please ask on stackoverflow.com using the spring-boot tag or chat with the community on Gitter.

Project Page | GitHub | Issues | Documentation | Stack Overflow | …