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https://issues.apache.org/jira/browse/KARAF-7872?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17890391#comment-17890391
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Jean-Baptiste Onofré commented on KARAF-7872:
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It looks great ! Thanks [~shuber] !
I think it would be great to have this python util in a contrib folder.
> New CLI Tool: show-manifest.py for OSGI Bundle Manifest Analysis
> ----------------------------------------------------------------
>
> Key: KARAF-7872
> URL: https://issues.apache.org/jira/browse/KARAF-7872
> Project: Karaf
> Issue Type: Improvement
> Components: karaf
> Reporter: Serge Huber
> Assignee: Jean-Baptiste Onofré
> Priority: Major
> Attachments: show-manifest.py
>
>
> I'd like to contribute a new command-line tool called show-manifest.py to the
> Apache Karaf project that is attached to this ticket. This tool is designed
> to simplify the process of analyzing OSGI Bundle Manifest files within JAR
> archives.
> {*}Purpose{*}:
> The show-manifest.py script provides a quick and easy way for developers and
> system administrators to inspect the contents of MANIFEST.MF files without
> having to extract the JAR or use complex tools. This tool addresses a common
> pain point in OSGi development and deployment workflows.
> As an OSGi developer, I often encounter situations where a generated JAR
> fails during deployment. In these cases, being able to quickly inspect the
> OSGi Manifest is crucial for diagnosing the issue. However, the process of
> extracting the JAR and locating the MANIFEST.MF file can be time-consuming
> and disruptive to the debugging workflow. The show-manifest.py script solves
> this problem by allowing immediate inspection of the manifest directly from
> the JAR file.
> This tool is particularly useful for:
> 1. Quickly troubleshooting deployment failures by examining bundle metadata,
> version information, and dependencies.
> 2. Verifying that the manifest contains the expected entries after the build
> process.
> 3. Comparing manifests across different versions of a bundle to identify
> changes that might affect deployment or runtime behavior.
> 4. Educating new OSGi developers by providing an easy way to explore and
> understand manifest structures.
> By streamlining the manifest inspection process, this tool can significantly
> reduce the time spent on diagnosing deployment issues and improve overall
> development efficiency in OSGi-based projects.
> *Key Features:*
> 1. Extracts and displays the MANIFEST.MF content from a specified JAR file.
> 2. Parses and formats complex headers (e.g., Bundle-ClassPath,
> Export-Package) for improved readability.
> 3. Supports both a "fancy" output mode with box-drawing characters and a
> simple mode for better compatibility across different terminal emulators.
> 4. Easy to use with a simple command-line interface.
> *Usage:*
> show-manifest <path_to_jar>
> *Benefits:*
> 1. Speeds up the process of inspecting OSGI bundle manifests.
> 2. Improves readability of complex manifest headers.
> 3. Works as a standalone script, making it easy to integrate into various
> workflows.
> 4. Helps developers quickly verify bundle configurations and dependencies.
> *Implementation:*
> The script is written in Python and uses only standard library modules,
> ensuring wide compatibility. It can be easily integrated into the Karaf
> toolset or distributed as a standalone utility.
> I look forward to your feedback and the opportunity to contribute this tool
> to the Apache Karaf project.
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