fix: honor BackendTrafficPolicy targetRefs.sectionName for Service ports#428
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fix: honor BackendTrafficPolicy targetRefs.sectionName for Service ports#428AlinsRan wants to merge 3 commits into
AlinsRan wants to merge 3 commits into
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AttachBackendTrafficPolicyToUpstream only matched targetRef.Name and ignored sectionName, so a policy scoped to one named Service port was applied to the whole Service. Now when a targetRef sets sectionName, the policy attaches only to the backend whose Service port name matches it; a port-specific targetRef takes precedence over a whole-Service one. Per Gateway API semantics, a sectionName that cannot be resolved does not attach. Closes #421
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📝 WalkthroughWalkthrough
ChangesBackendTrafficPolicy sectionName-aware attachment
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Inline comments:
In `@internal/adc/translator/policies.go`:
- Around line 54-60: The policy matching logic in the loop iterating through
po.Spec.TargetRefs only validates the Name field of the targetRef against
ref.Name, which allows policies for different resource kinds (e.g.,
ServiceImport) to incorrectly attach to resources with the same name but
different kinds (e.g., Service). Add validation to also check that the
targetRef's group and kind match the corresponding fields of ref before
proceeding with the name comparison and the subsequent
backendRefMatchesSectionName check. This ensures policies are scoped to the
correct resource type and prevents cross-kind attachment when names collide.
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ℹ️ Review info
⚙️ Run configuration
Configuration used: Organization UI
Review profile: CHILL
Plan: Pro
Run ID: 1a7756f5-9f28-46b9-b2fa-ae57f0937e7d
📒 Files selected for processing (8)
internal/adc/translator/grpcroute.gointernal/adc/translator/httproute.gointernal/adc/translator/httproute_test.gointernal/adc/translator/ingress.gointernal/adc/translator/policies.gointernal/adc/translator/tcproute.gointernal/adc/translator/tlsroute.gointernal/adc/translator/udproute.go
Contributor
conformance test report - apisix modeapiVersion: gateway.networking.k8s.io/v1
date: "2026-06-22T01:54:43Z"
gatewayAPIChannel: experimental
gatewayAPIVersion: v1.3.0
implementation:
contact: null
organization: APISIX
project: apisix-ingress-controller
url: https://github.com/apache/apisix-ingress-controller.git
version: v2.0.0
kind: ConformanceReport
mode: default
profiles:
- core:
result: success
statistics:
Failed: 0
Passed: 12
Skipped: 0
name: GATEWAY-GRPC
summary: Core tests succeeded.
- core:
failedTests:
- HTTPRouteInvalidBackendRefUnknownKind
result: failure
skippedTests:
- HTTPRouteHTTPSListener
statistics:
Failed: 1
Passed: 31
Skipped: 1
extended:
result: partial
skippedTests:
- HTTPRouteRedirectPortAndScheme
statistics:
Failed: 0
Passed: 11
Skipped: 1
supportedFeatures:
- GatewayAddressEmpty
- GatewayPort8080
- HTTPRouteBackendProtocolWebSocket
- HTTPRouteDestinationPortMatching
- HTTPRouteHostRewrite
- HTTPRouteMethodMatching
- HTTPRoutePathRewrite
- HTTPRoutePortRedirect
- HTTPRouteQueryParamMatching
- HTTPRouteRequestMirror
- HTTPRouteResponseHeaderModification
- HTTPRouteSchemeRedirect
unsupportedFeatures:
- GatewayHTTPListenerIsolation
- GatewayInfrastructurePropagation
- GatewayStaticAddresses
- HTTPRouteBackendProtocolH2C
- HTTPRouteBackendRequestHeaderModification
- HTTPRouteBackendTimeout
- HTTPRouteParentRefPort
- HTTPRoutePathRedirect
- HTTPRouteRequestMultipleMirrors
- HTTPRouteRequestPercentageMirror
- HTTPRouteRequestTimeout
name: GATEWAY-HTTP
summary: Core tests failed with 1 test failures. Extended tests partially succeeded
with 1 test skips.
- core:
result: partial
skippedTests:
- TLSRouteSimpleSameNamespace
statistics:
Failed: 0
Passed: 10
Skipped: 1
name: GATEWAY-TLS
summary: Core tests partially succeeded with 1 test skips. |
Contributor
conformance test report - apisix-standalone modeapiVersion: gateway.networking.k8s.io/v1
date: "2026-06-22T01:53:44Z"
gatewayAPIChannel: experimental
gatewayAPIVersion: v1.3.0
implementation:
contact: null
organization: APISIX
project: apisix-ingress-controller
url: https://github.com/apache/apisix-ingress-controller.git
version: v2.0.0
kind: ConformanceReport
mode: default
profiles:
- core:
result: success
statistics:
Failed: 0
Passed: 12
Skipped: 0
name: GATEWAY-GRPC
summary: Core tests succeeded.
- core:
result: partial
skippedTests:
- HTTPRouteHTTPSListener
statistics:
Failed: 0
Passed: 32
Skipped: 1
extended:
result: partial
skippedTests:
- HTTPRouteRedirectPortAndScheme
statistics:
Failed: 0
Passed: 11
Skipped: 1
supportedFeatures:
- GatewayAddressEmpty
- GatewayPort8080
- HTTPRouteBackendProtocolWebSocket
- HTTPRouteDestinationPortMatching
- HTTPRouteHostRewrite
- HTTPRouteMethodMatching
- HTTPRoutePathRewrite
- HTTPRoutePortRedirect
- HTTPRouteQueryParamMatching
- HTTPRouteRequestMirror
- HTTPRouteResponseHeaderModification
- HTTPRouteSchemeRedirect
unsupportedFeatures:
- GatewayHTTPListenerIsolation
- GatewayInfrastructurePropagation
- GatewayStaticAddresses
- HTTPRouteBackendProtocolH2C
- HTTPRouteBackendRequestHeaderModification
- HTTPRouteBackendTimeout
- HTTPRouteParentRefPort
- HTTPRoutePathRedirect
- HTTPRouteRequestMultipleMirrors
- HTTPRouteRequestPercentageMirror
- HTTPRouteRequestTimeout
name: GATEWAY-HTTP
summary: Core tests partially succeeded with 1 test skips. Extended tests partially
succeeded with 1 test skips.
- core:
result: partial
skippedTests:
- TLSRouteSimpleSameNamespace
statistics:
Failed: 0
Passed: 10
Skipped: 1
name: GATEWAY-TLS
summary: Core tests partially succeeded with 1 test skips. |
Contributor
conformance test reportapiVersion: gateway.networking.k8s.io/v1
date: "2026-06-22T02:11:24Z"
gatewayAPIChannel: experimental
gatewayAPIVersion: v1.3.0
implementation:
contact: null
organization: APISIX
project: apisix-ingress-controller
url: https://github.com/apache/apisix-ingress-controller.git
version: v2.0.0
kind: ConformanceReport
mode: default
profiles:
- core:
failedTests:
- GatewayModifyListeners
result: failure
statistics:
Failed: 1
Passed: 11
Skipped: 0
name: GATEWAY-GRPC
summary: Core tests failed with 1 test failures.
- core:
failedTests:
- GatewayModifyListeners
result: failure
skippedTests:
- HTTPRouteHTTPSListener
statistics:
Failed: 1
Passed: 31
Skipped: 1
extended:
result: partial
skippedTests:
- HTTPRouteRedirectPortAndScheme
statistics:
Failed: 0
Passed: 11
Skipped: 1
supportedFeatures:
- GatewayAddressEmpty
- GatewayPort8080
- HTTPRouteBackendProtocolWebSocket
- HTTPRouteDestinationPortMatching
- HTTPRouteHostRewrite
- HTTPRouteMethodMatching
- HTTPRoutePathRewrite
- HTTPRoutePortRedirect
- HTTPRouteQueryParamMatching
- HTTPRouteRequestMirror
- HTTPRouteResponseHeaderModification
- HTTPRouteSchemeRedirect
unsupportedFeatures:
- GatewayHTTPListenerIsolation
- GatewayInfrastructurePropagation
- GatewayStaticAddresses
- HTTPRouteBackendProtocolH2C
- HTTPRouteBackendRequestHeaderModification
- HTTPRouteBackendTimeout
- HTTPRouteParentRefPort
- HTTPRoutePathRedirect
- HTTPRouteRequestMultipleMirrors
- HTTPRouteRequestPercentageMirror
- HTTPRouteRequestTimeout
name: GATEWAY-HTTP
summary: Core tests failed with 1 test failures. Extended tests partially succeeded
with 1 test skips.
- core:
failedTests:
- GatewayModifyListeners
- TLSRouteSimpleSameNamespace
result: failure
statistics:
Failed: 2
Passed: 9
Skipped: 0
name: GATEWAY-TLS
summary: Core tests failed with 2 test failures. |
Matching only by name allowed a policy to attach across resource kinds when names collide (e.g. a ServiceImport-targeted policy attaching to a Service backend). Validate the targetRef group/kind against the backend ref (applying Gateway API defaults: empty group, Service kind) before matching.
Route two hostnames to the same Service via its two named ports (http/80 and http-v2/8080), then assert a policy with sectionName: http-v2 rewrites the upstream host only for the http-v2 backend and not for the http one.
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What this does
Fixes #421.
AttachBackendTrafficPolicyToUpstreamselected the policy to apply by matching onlytargetRef.Nameand ignoredtargetRef.sectionName. As a result aBackendTrafficPolicyintended for a single named Service port was treated as if it applied to the entire Service.For a
Servicetarget, the Gateway API interpretssectionNameas the port name (see the generated API reference). This PR makes attachment honor it:targetRefwithoutsectionNamestill applies to the whole Service (unchanged behavior).targetRefwithsectionNameattaches only to the backend whose resolved Service port name matches it.targetReftakes precedence over a whole-ServicetargetRefthat matches the same backend.sectionNamethat cannot be resolved does not attach.To resolve a backend's port name, the function now also receives
tctx.Servicesand maps the backend ref port number to the Service port name. All call sites (httproute / grpcroute / ingress / tcproute / tlsroute / udproute) are updated.Tests
Added
TestAttachBackendTrafficPolicyToUpstreamSectionNamecovering: sectionName match, mismatch (no attach), no-sectionName whole-Service attach, and port-specific precedence over whole-Service.go build,go vet, andgo test ./internal/adc/translator/all pass.Summary by CodeRabbit
sectionName, so scheme changes can apply to a specific named backend port (not just the whole service).sectionNamecan’t be resolved for the referenced backend port.sectionNamematching and overrides, plus a new end-to-end coverage for GatewayHTTPRoutebehavior.