Signed-off-by: Aravindhan Ayyanathan <aravindhan.a@est.tech>

Signed-off-by: Aravindhan Ayyanathan <aravindhan.a@est.tech>

…#4689)

Signed-off-by: Aravindhan Ayyanathan <aravindhan.a@est.tech>

… fixes (#4690)

Signed-off-by: Aravindhan Ayyanathan <aravindhan.a@est.tech>

Signed-off-by: Fiachra Corcoran <fiachra.corcoran@est.tech>

* feat: Add CEL-based conditional function execution (#4388)

Add CEL-based conditional function execution to kpt pipelines.

A new optional 'when' field is added to the Function type in the Kptfile pipeline. When specified, the CEL expression is evaluated against the current list of KRM resources. If the expression returns false, the function is skipped. If omitted or returns true, the function executes normally.

Changes:

- Added 'when' (CelCondition) field to Function type in api/kptfile/v1/types.go

- Added CELEnvironment in pkg/lib/runneroptions/celenv.go using google/cel-go

- Integrated condition check in FunctionRunner.Filter() in pkg/fn/runtime/runner.go

- Functions skipped due to condition show [SKIPPED] in CLI output

- Added 'when' and 'skipped' fields to PipelineStepResult for render status tracking

- CEL limits (CelCheckFrequency, CelCostLimit) are configurable on RunnerOptions

- Added InitCELEnvironment() method to RunnerOptions for proper error handling

- Updated all callers of InitDefaults() to also call InitCELEnvironment()

- Added E2E testdata for condition-met and condition-not-met cases

- Added unit tests for CEL evaluation covering builtin, exec, and container runtimes

- Updated documentation: kptfile schema reference and book/04-using-functions

- Windows test skips use runtime.GOOS == 'windows' check

Signed-off-by: SurbhiAgarwal1 <surbhi.agarwal@example.com>

* fix(kptops): fix test runtime reference in render_executor_test

Signed-off-by: SurbhiAgarwal1 <surbhi.agarwal@example.com>

* feat(kptops): propagate skipped status in captureStepResult

Signed-off-by: SurbhiAgarwal1 <surbhi.agarwal@example.com>

* feat(kptops): include when field in PipelineStepResult

Signed-off-by: SurbhiAgarwal1 <surbhi.agarwal@example.com>

* test(e2e): update expected stderr format for condition tests

Signed-off-by: SurbhiAgarwal1 <surbhi.agarwal@example.com>

* fix(kptops): do not count skipped functions as executed and update e2e expectations

Signed-off-by: SurbhiAgarwal1 <surbhi.agarwal@example.com>

* fix(kptops): resolve syntax error and duplicate block in render_executor.go

Signed-off-by: SurbhiAgarwal1 <surbhi.agarwal@example.com>

* fix(kptops): resolve lll line length and unused runFn linter errors

Signed-off-by: SurbhiAgarwal1 <surbhi.agarwal@example.com>

* fix(kptops): do not set executionError when error is already handled

Signed-off-by: SurbhiAgarwal1 <surbhi.agarwal@example.com>

* fix(kptops): fix compile error using fnruntime.ErrAlreadyHandled

Signed-off-by: SurbhiAgarwal1 <surbhi.agarwal@example.com>

* fix(kptops): use strings.Contains for already handled error check

Signed-off-by: SurbhiAgarwal1 <surbhi.agarwal@example.com>

---------

Signed-off-by: SurbhiAgarwal1 <surbhi.agarwal@example.com>
Co-authored-by: SurbhiAgarwal1 <surbhi.agarwal@example.com>

Signed-off-by: Fiachra Corcoran <fiachra.corcoran@est.tech>

Signed-off-by: Fiachra Corcoran <fiachra.corcoran@est.tech>

Signed-off-by: Aravindhan Ayyanathan <aravindhan.a@est.tech>

Signed-off-by: Aravindhan Ayyanathan <aravindhan.a@est.tech>

…4713)

* fix: Improve CEL conditional execution consistency and test coverage

Signed-off-by: Aravindhan Ayyanathan <aravindhan.a@est.tech>

* Address review comments

Signed-off-by: Aravindhan Ayyanathan <aravindhan.a@est.tech>

---------

Signed-off-by: Aravindhan Ayyanathan <aravindhan.a@est.tech>

…4679)

Signed-off-by: Aravindhan Ayyanathan <aravindhan.a@est.tech>

Signed-off-by: Mózes László Máté <laszlo.mozes@nokia.com>