feat BackendTrafficPolicy (envoyproxy#2053)

* feat BackendTrafficPolicy Takes PR envoyproxy#1961 forward Signed-off-by: Arko Dasgupta <[email protected]> * lint Signed-off-by: Arko Dasgupta <[email protected]> * k8s status Signed-off-by: Arko Dasgupta <[email protected]> * k8s watch Signed-off-by: Arko Dasgupta <[email protected]> * Update site/content/en/latest/design/backend-traffic-policy.md Co-authored-by: zirain <[email protected]> Signed-off-by: Arko Dasgupta <[email protected]> * Update site/content/en/latest/design/backend-traffic-policy.md Co-authored-by: zirain <[email protected]> Signed-off-by: Arko Dasgupta <[email protected]> --------- Signed-off-by: Arko Dasgupta <[email protected]> Signed-off-by: Arko Dasgupta <[email protected]> Co-authored-by: zirain <[email protected]>
Xunzhuo · Oct 24, 2023 · a858547 · a858547
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diff --git a/api/v1alpha1/backendtrafficpolicy_types.go b/api/v1alpha1/backendtrafficpolicy_types.go
@@ -0,0 +1,71 @@
+// Copyright Envoy Gateway Authors
+// SPDX-License-Identifier: Apache-2.0
+// The full text of the Apache license is available in the LICENSE file at
+// the root of the repo.
+
+package v1alpha1
+
+import (
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	gwapiv1a2 "sigs.k8s.io/gateway-api/apis/v1alpha2"
+)
+
+const (
+	// KindBackendTrafficPolicy is the name of the BackendTrafficPolicy kind.
+	KindBackendTrafficPolicy = "BackendTrafficPolicy"
+)
+
+// +kubebuilder:object:root=true
+// +kubebuilder:resource:shortName=btpolicy
+// +kubebuilder:subresource:status
+// +kubebuilder:subresource:overrideStrategy
+// +kubebuilder:printcolumn:name="Status",type=string,JSONPath=`.status.conditions[?(@.type=="Accepted")].reason`
+// +kubebuilder:printcolumn:name="Age",type=date,JSONPath=`.metadata.creationTimestamp`
+//
+// BackendTrafficPolicy allows the user to configure the behavior of the connection
+// between the downstream client and Envoy Proxy listener.
+type BackendTrafficPolicy struct {
+	metav1.TypeMeta   `json:",inline"`
+	metav1.ObjectMeta `json:"metadata,omitempty"`
+
+	// spec defines the desired state of BackendTrafficPolicy.
+	Spec BackendTrafficPolicySpec `json:"spec"`
+
+	// status defines the current status of BackendTrafficPolicy.
+	Status BackendTrafficPolicyStatus `json:"status,omitempty"`
+}
+
+// spec defines the desired state of BackendTrafficPolicy.
+type BackendTrafficPolicySpec struct {
+
+	// +kubebuilder:validation:XValidation:rule="self.kind == 'Gateway' || self.kind == 'HTTPRoute' || self.kind == 'GRPCRoute' || self.kind == 'UDPRoute' || self.kind == 'TCPRoute' || self.kind == 'TLSRoute'", message="this policy can only have a targetRef.kind of Gateway/HTTPRoute/GRPCRoute/TCPRoute/UDPRoute/TLSRoute"
+	//
+	// targetRef is the name of the resource this policy
+	// is being attached to.
+	// This Policy and the TargetRef MUST be in the same namespace
+	// for this Policy to have effect and be applied to the Gateway.
+	TargetRef gwapiv1a2.PolicyTargetReferenceWithSectionName `json:"targetRef"`
+}
+
+// BackendTrafficPolicyStatus defines the state of BackendTrafficPolicy
+type BackendTrafficPolicyStatus struct {
+	// Conditions describe the current conditions of the BackendTrafficPolicy.
+	//
+	// +optional
+	// +listType=map
+	// +listMapKey=type
+	// +kubebuilder:validation:MaxItems=8
+	Conditions []metav1.Condition `json:"conditions,omitempty"`
+}
+
+// +kubebuilder:object:root=true
+// BackendTrafficPolicyList contains a list of BackendTrafficPolicy resources.
+type BackendTrafficPolicyList struct {
+	metav1.TypeMeta `json:",inline"`
+	metav1.ListMeta `json:"metadata,omitempty"`
+	Items           []BackendTrafficPolicy `json:"items"`
+}
+
+func init() {
+	SchemeBuilder.Register(&BackendTrafficPolicy{}, &BackendTrafficPolicyList{})
+}
diff --git a/api/v1alpha1/zz_generated.deepcopy.go b/api/v1alpha1/zz_generated.deepcopy.go