feat: add structured JSON/YAML output for describe commands - #3243
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Add -o json and -o yaml to describe for pipelines, tasks, pipeline runs, task runs, custom runs, event listeners, trigger bindings, trigger templates, and cluster trigger bindings. Uses typed resource objects with apiVersion and kind. Keep -o name, jsonpath, and eventlistener url unchanged. Fix --last on pipelinerun, taskrun, and customrun so structured output errors when no runs exist instead of writing human text to stdout. Update examples, docs, man pages, and tests. Signed-off-by: Ankur Sinha <anksinha@redhat.com> Assisted-by: Claude Opus 4.6
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Changes
Add
--output jsonand--output yamlsupport to all ninetkn describecommands:pipeline,task,pipelinerun,taskrun,customruneventlistener,triggerbinding,triggertemplate,clustertriggerbindingapiVersionandkindvia shared helpers inpkg/formatted(IsStructured,SetTypeMeta,PrintStructuredOutput).Preserved behavior:
-ois omitted-o name,-o jsonpath, andeventlistener -o urlFor
pipelinerun,taskrun, andcustomrunwith--last, structured output now returns an error on stderr when no runs exist instead of writing human text to stdout.Also updates command examples, generated docs, man pages, and adds unit tests with golden files.
Submitter Checklist
make checkmake generatedRelease Notes