feat: ask for confirmation before teardown

[Molter73]

This is a small change that asks the user before the teardown command goes through in interactive shells, intended to help prevent situations where something is accidentally teardown from unintended inertia or when working with multiple clusters. A -f, --force flag is added to the teardown command to skip the prompt altogether.

Example output:

00:00 Using kubeconfig /home/mmoltras/.config/kube.yml
00:00 About to teardown Central, Secured Cluster, and Operator on kind-kind, continue? [y/N]
n
00:10 Aborting teardown

This change could also be expanded to skip the check on well known debug contexts like the teardown script from our workflow repo does, but I think I prefer it the way it is now: https://github.com/stackrox/workflow/blob/4e8520b1111738a47ddc7b0a2232a9e1eb4ebf1c/lib/common.sh#L134-L159

Tests

Decline teardown

Garbage answer

Implicit decline

Accept teardown and force flag

Cancel via ctrl+d

Teardown from non-interactive terminal

Summary by CodeRabbit

• New Features
  • Teardown now asks for confirmation before proceeding in interactive runs, helping prevent accidental removal of selected components.
  • Use the force option to skip the confirmation prompt. Non-interactive runs also continue without prompting.
  • If you decline, teardown is canceled. If confirmation input cannot be read, the error is reported and teardown does not proceed.

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• internal/helpers/helpers.go

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📝 Walkthrough

The teardown command adds a force flag and prompts for confirmation before teardown when execution is interactive and force is disabled. The new helper accepts trimmed, case-insensitive “y” or “yes” responses.

Changes: Teardown confirmation

Layer / File(s)	Summary
Add and apply teardown confirmation internal/helpers/helpers.go, cmd/teardown.go	WaitForConfirmation prints a prompt and reads one line from standard input. It returns true only for “y” or “yes”, ignoring case and surrounding whitespace. The teardown command adds -f/--force to skip the prompt. When confirmation is declined, it logs an abort and returns; confirmation errors are returned.

Priority: ⬇️ Low

Estimated code review effort: 2 (Simple) | ~10 minutes

Change: Feature

Sequence Diagram(s)

sequenceDiagram
  actor User
  participant TeardownCommand
  participant WaitForConfirmation
  participant StandardInput
  TeardownCommand->>WaitForConfirmation: Request confirmation when interactive and not forced
  WaitForConfirmation-->>User: Print confirmation prompt
  User->>StandardInput: Enter response
  WaitForConfirmation->>StandardInput: Read response
  StandardInput-->>WaitForConfirmation: Return input or read error
  WaitForConfirmation-->>TeardownCommand: Return confirmation result or error
  alt Confirmation declined
    TeardownCommand-->>User: Log abort and return
  else Confirmation accepted
    TeardownCommand->>TeardownCommand: Proceed with teardown
  end

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Suggested reviewers: mclasmeier

Merge Risk: ⚪ Minimal · up to ab8d5

Interactive teardown now requires confirmation unless --force is used, and declining or failing to answer stops teardown. No concrete merge-blocking issue remains.

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Out of Scope Changes check		Check skipped because no linked issues were found for this pull request.
Description Check		Check skipped - CodeRabbit’s high-level summary is enabled.
Title check		The title clearly and concisely describes the main change: adding a confirmation prompt before teardown.

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Actionable comments posted: 2

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Inline comments:
Review comments at @cmd/teardown.go:
- Line 60: Update the confirmation gate in the teardown flow to require both
stdin and stderr to be terminals, without relying on env.RunningInteractively,
which also checks stdout; bypass the prompt when stderr is redirected. Ensure
the confirmation prompt is written to stderr so stdout redirection does not
suppress an otherwise interactive confirmation.

Review comments at @internal/helpers/helpers.go:
- Around line 164-165: Update the confirmation prompt’s ReadString error
handling to return false, nil for io.EOF, treating terminal EOF as a declined
confirmation; preserve the existing error return for all other read errors.

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• cmd/teardown.go
• internal/helpers/helpers.go

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[porridge]

I think this is a change in a good direction, and looks good overall, but I'm worried about the rollout. Specifically there is a bunch of places in the stackrox repo where we call roxie teardown.

.github/workflows/performance-tests.yml:          roxie teardown central --single-namespace
qa-tests-backend/scripts/run-compatibility.sh:        "$ROOT/scripts/roxie.sh" teardown all --single-namespace || true
qa-tests-backend/scripts/run-part-1.sh:        info "Using roxie-based pre-test teardown"
qa-tests-backend/scripts/run-part-1.sh:        roxie teardown all --single-namespace
scale/dev/kill-sensors.sh:  roxie teardown secured-cluster --set securedCluster.namespace="${sensor_namespaces[i]}"
scripts/teardown.sh:"${ROOT}/scripts/roxie.sh" teardown --single-namespace
tests/e2e/run-compatibility.sh:    "$ROOT/scripts/roxie.sh" teardown all --single-namespace || true
tests/upgrade/postgres_run.sh:    roxie teardown secured-cluster --verbose --single-namespace
tests/upgrade/postgres_upgrade_run.sh:    roxie teardown both --verbose --single-namespace

Some of these only run in CI, so in principle might be fine. However I'm just a little bit afraid that the runtime environment might be simulating a controlling terminal well enough for roxie to be confused and get stuck waiting for a confirmation.

Additionally, some of these are at least somewhat prepared for running interactively, and might already be ensuring that the right cluster is being acted upon, so an additional confirmation from roxie might be annoying (esp. when the thing runs many times like in the performance tests).

In theory adding a --force on these would solve the problem. However, this change is introducing this flag at the same moment as adding the confirmation prompt. So we cannot roll out the change to add the --force in advance of bumping to the roxie version that will contain this change.

Which in turn makes me reluctant to merge this change right now, because I'm waiting for another PR to merge, which is on the critical path for the installation method consolidation. I wouldn't want to release both that and this change in one roxie version since it would make the ROXIE_VERSION bump risky.

[Molter73]

@porridge all fair points, I have no rush to get this merged so we can take our time validating all works as expected. I can try forcing the main repo to run those steps with the version of roxie in this PR and see if it truly brings problems, if it does I can either figure out a way to bump roxie while also adding --force in the required places or split the PR so we introduce the --force flag with no effect at all, then bump roxie on the main repo and add the flag on the problematic places, then introduce these changes and bump roxie again. I'll come back here once I've tried running the steps on the main repo.