Description

setServiceOptions in pkg/knative/deployer.go uses fmt.Sprintf("%f", ...) to format the Target and Utilization autoscaling annotation values. Go's %f verb produces 6 trailing decimal places by default (e.g., "100.000000"), which is not the expected format for Knative autoscaling annotations.

Steps to Reproduce

1. Create a function with scale options in func.yaml:

deploy:
  options:
    scale:
      target: 100
      utilization: 70

2. Deploy the function: func deploy
3. Inspect the deployed Knative Service annotations:

kubectl get ksvc <name> -o jsonpath='{.spec.template.metadata.annotations}'

Expected Behavior

Annotations should contain clean numeric strings:

• autoscaling.knative.dev/target: "100"
• autoscaling.knative.dev/target-utilization-percentage: "70"

Actual Behavior

Annotations contain float-formatted strings with trailing zeros:

• autoscaling.knative.dev/target: "100.000000"
• autoscaling.knative.dev/target-utilization-percentage: "70.000000"

Relevant Code

// pkg/knative/deployer.go:592
toUpdate[autoscaling.TargetAnnotationKey] = fmt.Sprintf("%f", *options.Scale.Target)
// pkg/knative/deployer.go:598
toUpdate[autoscaling.TargetUtilizationPercentageKey] = fmt.Sprintf("%f", *options.Scale.Utilization)

Suggested Fix

Replace %f with %g to strip trailing zeros:

toUpdate[autoscaling.TargetAnnotationKey] = fmt.Sprintf("%g", *options.Scale.Target)
toUpdate[autoscaling.TargetUtilizationPercentageKey] = fmt.Sprintf("%g", *options.Scale.Utilization)