Mule Runtime Upgrade JDK Upgrade - SatyaDora/SatyaDora GitHub Wiki
Starting MuleSoft runtime version 4.9, MuleSoft has stopped supporting JDK 1.8 for all its newer runtimes. This makes it imperative to upgrade the older versions of all MuleSoft codes to be made JDK17 compliant to ensure the currency of the runtime versions. Having said that, some apis built on older versions of runtime i.e. 4.4.0 and older might need significant changes in the code, the APIs built on newer version are less susceptible to major code overhaul
Step 1: Upgrade Anypoint Studio to Version 7.21
⇒ Check for Studio Version:
Open Anypoint Studio.
Go to Help → About Anypoint Studio to check the current version of your studio.
⇒ Download and Install Latest Version:+
If you are using an older version, download the latest version of Anypoint Studio 7.21 from the MuleSoft website. Once downloaded, follow the installation instructions for your operating system. ⇒ Verify Studio Version: After installation, go to Help → About Anypoint Studio to verify that you’re using version 7.21 Step-2: Configure Anypoint Studio to Use JDK 17 Update Studio’s JDK Setting: In Anypoint Studio, go to Window → Preferences → Java → Installed JREs. Click Add → Standard VM → Next. Browse to the location of your JDK 17 installation and select the JDK directory. Once added, select it as the default JRE for Studio. Ensure Java 17 is Set as Default:
Make sure that JDK 17 is also selected as the active JDK in Preferences → Java → Compiler. Set the Java Compiler Compliance Level to 17.
Step-3 Identifying JDK 17 changes and Runtime 4.9 Point the Studio Maven to Maven 3.8 on local. They can change inbuilt JDK. To check from the windows/Linux command line run %JAVA_HOME%. This will give the current configured JDK version Step-4: Steps To Upgrade: 1. Take the latest branch 2. Create a new branch out of it as -→ runtime-4.9-upgrade
Step-6: 1.Once you import the project, select the upgrade option and upgrade.
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After the auto upgrade, open the POM.xml and check the runtime version and mule.maven.plugin.version. If they do not match the following screenshot, make changes manually.
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muleartifact. json
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Next, right click on the project and traverse to manage dependencies à manage modules.
5.Upgrade all the modules that show up in the list. NOTE: Please be very careful with any custom connector. Like Amazon connectors. Before you upgrade, please compare the existing operations with the operations in the upgraded version. Some operations may change without prior notice and thus break the code.
6.Run the code on Studio 7.Ensure the code startup happens WITHOUT any errors.
8.The code is ready to be checked in and deployed through the pipeline. 9.Before checking In, please validate the changes make sure no logic code is going to change 10.Commit the changes to the feature branch created. Check the GitLab to ensure changes reflect
Step7: 1.Create a merge request with the DEVELOP branch. Validate the merge changes.
2.Merge. This will merge the branch and trigger the pipeline
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Once deployment completes, check the Anypoint Platform Logs. Ensure there are no startup errors.
After saving and applying in the runtime manager while redeploying, we have to upgrade the security policy in Anypoint Manager as shown below:
Then it successfully deployed with 4.9 version In cloud Recommended Actions for Java 17 Compatibility: 1. Upgrade Connectors: Ensure all connectors are updated to the latest versions. If you’re using connectors like Lookup, Salesforce, or Database connectors, check for Java 17 compatibility. 2. Test Thoroughly: After upgrading to Java 17, thoroughly test your application to ensure all connectors function as expected. 3. Review Anypoint Studio Logs: If a connector has issues, Anypoint Studio’s logs often give clues as to which part of the connector or its dependencies is causing the problem. 4. Use the Latest Mule Runtime: To ensure better compatibility with Java 17, ensure you are using Mule Runtime 4.4.x or later. Mule Lookup function won’t work with Java 17 if certain dependencies are outdated or incompatible with newer versions of Java Solution: need to use flow references
Summary of Key Benefits: Java 17: • Long-term support and security updates. • Enhanced performance, reduced latency, and resource optimization. • New language features that make code more readable and maintainable. • Support for cloud-native applications and microservices. • Improved security and Java 17-specific APIs. Anypoint Studio 7.21: • Full compatibility with Java 17. • Enhanced developer experience with a refined UI and faster deployment processes. • Improved integration with CloudHub, Mule runtime, and Anypoint Platform. • Access to the latest Mule runtime features and optimizations. • Better debugging, monitoring, and CI/CD integration. Conclusion: Upgrading to Java 17 and Anypoint Studio 7.21 improves your Mule 4 application development by providing long-term support, security enhancements, better performance, and new features that can simplify development and maintenance. It also ensures that your applications are future-proof and aligned with the latest technologies. This upgrade is essential for staying competitive in the ever-evolving landscape of cloud integration and API management.