AlinsRan opened a new pull request, #2763:
URL: https://github.com/apache/apisix-ingress-controller/pull/2763
## Summary
This PR adds health check support to `BackendTrafficPolicy`, allowing users
to configure active and passive health checks for upstream backends directly
through the `BackendTrafficPolicy` resource.
## Changes
### New API types (`api/v1alpha1/backendtrafficpolicy_types.go`)
- Added `HealthCheck` struct with `Active` and `Passive` fields to
`BackendTrafficPolicySpec`
- `ActiveHealthCheck`: configures HTTP/TCP probes with configurable
interval, timeout, thresholds, and TLS settings
- `PassiveHealthCheck`: configures passive (observational) health monitoring
with configurable thresholds
- Timeouts field uses `BackendTrafficPolicyTimeouts` struct (renamed json
tag from `timeout` to `timeouts` for consistency)
### Translation (`internal/adc/translator/policies.go`)
- Translates `BackendTrafficPolicy.Spec.HealthCheck` into APISIX upstream
`checks` configuration
- Active health check intervals are clamped to a minimum of 1 second (APISIX
requirement)
- Supports both HTTP and TCP active health check types
- Maps all threshold fields: healthy/unhealthy HTTP statuses, TCP
success/failure counts
### CRD regeneration
- Updated `config/crd/bases/apisix.apache.org_backendtrafficpolicies.yaml`
with health check schema
- Updated deepcopy functions
### E2E tests (`test/e2e/crds/v1alpha1/backendtrafficpolicy.go`)
- End-to-end tests covering:
- Active HTTP health check configuration (interval, timeout, thresholds,
HTTP path)
- Active TCP health check configuration
- Passive health check configuration
- Health check deletion (verifies checks are removed from upstream)
## Example
```yaml
apiVersion: apisix.apache.org/v1alpha1
kind: BackendTrafficPolicy
metadata:
name: my-policy
spec:
targetRef:
group: gateway.networking.k8s.io
kind: HTTPRoute
name: my-route
healthCheck:
active:
type: HTTP
interval: 10s
timeout: 3s
httpPath: /healthz
healthy:
httpStatuses: [200, 201]
successes: 3
unhealthy:
httpStatuses: [500, 502, 503]
httpFailures: 3
```
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