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fix(render): stop already-started function runtimes when a later one fails to start - #403
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Merge Risk: 🔵 Low · up to
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| Check name | Status | Explanation | Resolution |
|---|---|---|---|
| Title check |  |
The title accurately describes the runtime cleanup change, but it is 83 characters and exceeds the 72-character limit. | Shorten the title to 72 characters or fewer while preserving the main change, for example: "fix(render): clean up runtimes when a later start fails" |
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Check name Status Explanation Linked Issues check Issue #396requires cleanup of runtimes that started before a later Function runtime fails.startFunctionRuntimesnow records started runtimes and callsStopFunctionRuntimeswhen runtime lookup or…Out of Scope Changes check The reviewed changes are limited to the #396runtime-start error path and its test coverage incmd/crossplane/render/render.goandcmd/crossplane/render/render_test.go. The injected runtime getter…Breaking Changes The pull request changes only cmd/crossplane/render/render.goand its tests.StartFunctionRuntimeskeeps the same exported signature, and no public fields or CLI flags are removed, renamed, or mad…Feature Gate Requirement The pull request fixes cleanup for an existing StartFunctionRuntimesfailure path. It does not add an experimental feature or change anything underapis/**. The exported function signature remains…Description check The description clearly explains the runtime cleanup fix, duplicate-name handling, testing changes, and validation performed.
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Actionable comments posted: 1
- 🪄 Fix CodeRabbit comments on this PR
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Inline comments:
Review comments at @cmd/crossplane/render/render.go:
- Line 155: Update runtime startup and cleanup around StopFunctionRuntimes so
duplicate Function names cannot overwrite a started RuntimeContext: reject
duplicates before starting their runtime, or retain every started RuntimeContext
for cleanup. Ensure cleanup stops the first runtime even when a later Function
with the same name fails.
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cmd/crossplane/render/render.gocmd/crossplane/render/render_test.go
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| // detaches the stop from ctx's cancellation, since ctx may be why the start | ||
| // failed. | ||
| func stopStarted(ctx context.Context, fa *FunctionAddresses, startErr error) error { | ||
| if err := StopFunctionRuntimes(ctx, fa); err != nil { |
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🩺 Stability & Availability | 🟡 Minor | ⚡ Quick win
Preserve every started runtime for cleanup.
Thanks for adding cleanup on startup failure. If two Functions have the same name and a later Function fails, contexts retains only the second runtime under that name. This call cannot stop the first runtime, so its container remains running. Could we reject a duplicate name before starting its runtime, or retain every started RuntimeContext for cleanup?
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Review comment at @cmd/crossplane/render/render.go at line 155:
Update runtime startup and cleanup around StopFunctionRuntimes so duplicate
Function names cannot overwrite a started RuntimeContext: reject duplicates
before starting their runtime, or retain every started RuntimeContext for
cleanup. Ensure cleanup stops the first runtime even when a later Function with
the same name fails.
After applying the fix, consider running `coderabbit review --agent` for local
review. Visit https://docs.coderabbit.ai/cli?utm_source=ghpr
…fails to start StartFunctionRuntimes starts each Function's runtime in turn. If getting or starting a later runtime failed it returned the error without stopping the runtimes it had already started, so their containers were leaked and the caller had no FunctionAddresses to stop them with. On a get or start failure, stop the runtimes started so far with StopFunctionRuntimes, which detaches the stop from ctx's cancellation (ctx may be why the start failed). The start error stays primary; any stop errors are joined to it. FunctionAddresses also kept runtimes in a map keyed by Function name, so when two Functions shared a name the first runtime was overwritten and never stopped, on success as well as on rollback. It now keeps every started runtime in a slice; addresses stay keyed by name, last wins. StartFunctionRuntimes is now a thin wrapper over startFunctionRuntimes, which takes the runtime getter as a parameter so the rollback can be tested. Fixes crossplane#396 Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com> Signed-off-by: Jonathan Ogilvie <jonathan.ogilvie@sumologic.com>
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Description of your changes
If a later Function failed to start,
StartFunctionRuntimesreturned without stopping the runtimes it had already started, leaking their containers. It now stops them withStopFunctionRuntimes(detached from ctx's cancellation) and returns the start error with any stop errors joined.Runtimes were also kept in a map keyed by Function name, so with duplicate names (e.g.
cmd/crossplane/render/testdata/functions.yaml) the first was never stopped, on success or rollback. They're now kept in a slice; addresses stay keyed by name, last wins.The runtime getter is now injected through an unexported
startFunctionRuntimesfor testing; the exported signature is unchanged.Fixes #396
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./nix.sh flake checkto ensure this PR is ready for review.Linked a PR or a docs tracking issue to document this change.Addedbackport release-x.ylabels to auto-backport this PR.Need help with this checklist? See the cheat sheet.
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