chore: add backendtrafficpolicy CRD

Author: AlinsRan

api/v1alpha1/backendtrafficpolicy_types.go

@@ -0,0 +1,91 @@
+package v1alpha1
+
+import (
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+
+	gatewayv1alpha2 "sigs.k8s.io/gateway-api/apis/v1alpha2"
+)
+
+// +kubebuilder:object:root=true
+// +kubebuilder:subresource:status
+type BackendTrafficPolicy struct {
+	metav1.TypeMeta   `json:",inline"`
+	metav1.ObjectMeta `json:"metadata,omitempty"`
+
+	Spec   BackendTrafficPolicySpec     `json:"spec,omitempty"`
+	Status gatewayv1alpha2.PolicyStatus `json:"status,omitempty"`
+}
+
+type BackendTrafficPolicySpec struct {
+	// TargetRef identifies an API object to apply policy to.
+	// Currently, Backends (i.e. Service, ServiceImport, or any
+	// implementation-specific backendRef) are the only valid API
+	// target references.
+	// +listType=map
+	// +listMapKey=group
+	// +listMapKey=kind
+	// +listMapKey=name
+	// +kubebuilder:validation:MinItems=1
+	// +kubebuilder:validation:MaxItems=16
+	TargetRefs []gatewayv1alpha2.LocalPolicyTargetReferenceWithSectionName `json:"targetRefs"`
+	// LoadBalancer represents the load balancer configuration for Kubernetes Service.
+	// The default strategy is round robin.
+	LoadBalancer *LoadBalancer `json:"loadbalancer,omitempty" yaml:"loadbalancer,omitempty"`
+	// The scheme used to talk with the upstream.
+	//
+	// +kubebuilder:validation:Enum=http;https;grpc;grpcs;
+	// +kubebuilder:default=http
+	Scheme string `json:"scheme,omitempty" yaml:"scheme,omitempty"`
+
+	// How many times that the proxy (Apache APISIX) should do when
+	// errors occur (error, timeout or bad http status codes like 500, 502).
+	// +optional
+	Retries *int `json:"retries,omitempty" yaml:"retries,omitempty"`
+
+	// Timeout settings for the read, send and connect to the upstream.
+	Timeout *Timeout `json:"timeout,omitempty" yaml:"timeout,omitempty"`
+
+	// Configures the host when the request is forwarded to the upstream.
+	// Can be one of pass, node or rewrite.
+	//
+	// +kubebuilder:validation:Enum=pass;node;rewrite;
+	// +kubebuilder:default=pass
+	PassHost string `json:"pass_host,omitempty" yaml:"pass_host,omitempty"`
+
+	// Specifies the host of the Upstream request. This is only valid if
+	// the pass_host is set to rewrite
+	Host Hostname `json:"upstream_host,omitempty" yaml:"upstream_host,omitempty"`
+}
+
+// LoadBalancer describes the load balancing parameters.
+// +kubebuilder:validation:XValidation:rule="!(has(self.key) && self.type != 'chash')"
+type LoadBalancer struct {
+	// +kubebuilder:validation:Enum=roundrobin;chash;ewma;least_conn;
+	// +kubebuilder:default=roundrobin
+	// +kubebuilder:validation:Required
+	Type string `json:"type" yaml:"type"`
+	// The HashOn and Key fields are required when Type is "chash".
+	// HashOn represents the key fetching scope.
+	// +kubebuilder:validation:Enum=vars;header;cookie;consumer;vars_combinations;
+	// +kubebuilder:default=vars
+	HashOn string `json:"hashOn,omitempty" yaml:"hashOn,omitempty"`
+	// Key represents the hash key.
+	Key string `json:"key,omitempty" yaml:"key,omitempty"`
+}
+
+type Timeout struct {
+	Connect metav1.Duration `json:"connect,omitempty" yaml:"connect,omitempty"`
+	Send    metav1.Duration `json:"send,omitempty" yaml:"send,omitempty"`
+	Read    metav1.Duration `json:"read,omitempty" yaml:"read,omitempty"`
+}
+
+// +kubebuilder:object:root=true
+type BackendTrafficPolicyList struct {
+	metav1.TypeMeta `json:",inline"`
+	metav1.ListMeta `json:"metadata,omitempty"`
+	Items           []BackendTrafficPolicy `json:"items"`
+}
+
+func init() {
+	SchemeBuilder.Register(&BackendTrafficPolicy{}, &BackendTrafficPolicyList{})
+}

api/v1alpha1/consumer_types.go

@@ -46,10 +46,6 @@ type SecretReference struct {
 	Namespace *string `json:"namespace,omitempty"`
 }
 
-type Status struct {
-	Conditions []metav1.Condition `json:"conditions,omitempty"`
-}
-
 // +kubebuilder:object:root=true
 type ConsumerList struct {
 	metav1.TypeMeta `json:",inline"`

api/v1alpha1/types.go

@@ -0,0 +1,12 @@
+package v1alpha1
+
+import metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+
+// +kubebuilder:validation:MinLength=1
+// +kubebuilder:validation:MaxLength=253
+// +kubebuilder:validation:Pattern=`^(\*\.)?[a-z0-9]([-a-z0-9]*[a-z0-9])?(\.[a-z0-9]([-a-z0-9]*[a-z0-9])?)*$`
+type Hostname string
+
+type Status struct {
+	Conditions []metav1.Condition `json:"conditions,omitempty"`
+}