Feature Request: Validate resources locally before applying (extend dtctl verify)

[hk9890]

Problem

dtctl verify currently only supports DQL queries (dtctl verify query). But when working with dashboards, notebooks, workflows, or settings, there's no way to check if a resource file is valid before running dtctl apply. Errors are only caught after the API rejects the request — which is too late for CI pipelines, pre-commit hooks, or quick local feedback.

Proposal

Extend dtctl verify to support additional resource types:

dtctl verify dashboard -f dashboard.yaml
dtctl verify notebook -f notebook.yaml
dtctl verify workflow -f workflow.yaml
dtctl verify settings -f settings.yaml
dtctl verify analyzer -f analyzer.yaml

Each command should validate the resource file and report errors/warnings without modifying anything in the Dynatrace environment.

Use Cases

• Local development: catch typos, missing fields, and structural mistakes before applying
• CI/CD pipelines: fail fast on invalid resource files with --fail-on-warn
• Pre-commit hooks: validate changed resource files automatically
• Scripting: machine-readable output with -o json

Expected Behavior

$ dtctl verify dashboard -f broken-dashboard.yaml
✖ Dashboard has issues
  ERROR: missing required field "tiles"
  WARN: no 'version' field in content

$ dtctl verify workflow -f my-workflow.yaml
✔ Workflow is valid
  Name: "My Workflow"
  Tasks: 3

$ echo $?
0

Exit codes should be consistent with dtctl verify query: 0 = valid, 1 = invalid/warnings with --fail-on-warn.

[discostu105]

Generally makes sense.

Only caveat: I would like to avoid building "validation knowledge" into dtctl itself to keep it slick and simple.
So, whenever there is a remote API we can use for validation, yes lets add it.

[xiangyuwu-dyna]

Do we have to wait until there are validation APIs available? Does that depend on the teams responsible for the apps?

[MaciejGrynda]

Verifying settings file can be adding validateOnly to the request (so dry run)
I'm not sure if there is a nice way to validate Documents.