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Скачать или смотреть How to Return Multiple Parameters from a Function in Jenkins Pipeline Script

  • vlogize
  • 2025-03-28
  • 13
How to Return Multiple Parameters from a Function in Jenkins Pipeline Script
Return multiple parameters from a function using if else in jenkins pipeline scriptjenkinsgroovyjenkins pipelinedevops
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Описание к видео How to Return Multiple Parameters from a Function in Jenkins Pipeline Script

Learn how to efficiently return multiple parameters from a function in Jenkins pipeline scripts without running into compilation errors.
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This video is based on the question https://stackoverflow.com/q/74317389/ asked by the user 'Naveen' ( https://stackoverflow.com/u/18528471/ ) and on the answer https://stackoverflow.com/a/74317666/ provided by the user 'ycr' ( https://stackoverflow.com/u/2627018/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

Visit these links for original content and any more details, such as alternate solutions, latest updates/developments on topic, comments, revision history etc. For example, the original title of the Question was: Return multiple parameters from a function using if else in jenkins pipeline script

Also, Content (except music) licensed under CC BY-SA https://meta.stackexchange.com/help/l...
The original Question post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license, and the original Answer post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license.

If anything seems off to you, please feel free to write me at vlogize [AT] gmail [DOT] com.
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Resolving Function Return Issues in Jenkins Pipeline Script

In the world of Continuous Integration and Continuous Deployment (CI/CD), Jenkins pipelines are a critical component. They allow developers to automate their build, test, and deployment processes effectively. However, like any programming tool, they come with their own set of challenges. If you're an avid Jenkins user, you might have faced a common issue: returning multiple parameters from a function using if-else statements in your pipeline script. Let's dive into this problem and explore a straightforward solution.

The Problem

You’ve crafted a Jenkins pipeline script where you want to return multiple parameters — specifically, environment variables based on the operational context (like development or production). However, upon attempting to run your script, you encountered an error message indicating a compilation issue. Here is a snippet of what you are trying to achieve:

[[See Video to Reveal this Text or Code Snippet]]

The error you're receiving is:

[[See Video to Reveal this Text or Code Snippet]]

This indicates that there is an issue with how you are returning values and setting your environment variables within the script.

Understanding the Issue

The primary issue here is the attempt to destructure the return value of a function within the environment block of a Jenkins pipeline. Unlike regular Groovy scripts, the Jenkins pipeline syntax does not allow for complex variable assignments or function calls in the environment section directly.

The Solution

Instead of trying to unpack multiple return values from build_func directly in the environment block, you can set the environment variables individually using a more compatible syntax. Here's a practical workaround:

Revised Code Segment

You can modify your environment block as follows:

[[See Video to Reveal this Text or Code Snippet]]

Breakdown of the Solution

Single Assignment: The new approach assigns values to environment variables envir and hostname separately.

Indexing the Array: Since build_func returns an array, you can directly access the elements using their respective indices (0 for envi and 1 for host).

Maintaining Clarity: This method preserves the readability and logic of your original script while adhering to the limitations of the Jenkins pipeline syntax.

Example of the Complete Pipeline Script

Here’s how your complete Jenkins pipeline script would look like after implementing the suggested changes:

[[See Video to Reveal this Text or Code Snippet]]

Conclusion

Returning multiple parameters from a function within a Jenkins pipeline can indeed present challenges, particularly due to the constraints of the environment block. By utilizing a more straightforward syntax for variable assignments, you can work around these issues effectively. With this approach, your Jenkins pipeline can seamlessly pass and utilize multiple parameters derived from a function, ensuring your CI/CD process runs smoothly.

By following this guide, you should now be able to resolve similar issues and enhance the functionality of your Jenkins scripts. Happy coding!

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