feat: Support Gateway API v1 (#64)

src/apiserver/pkg/apis/gatewayapi/v1/doc.go

@@ -0,0 +1,22 @@
+/*
+Copyright 2020 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Package v1 contains API Schema definitions for the gateway.networking.k8s.io
+// API group.
+//
+// +kubebuilder:object:generate=true
+// +groupName=gateway.networking.k8s.io
+package v1

src/apiserver/pkg/apis/gatewayapi/v1/gateway_types.go

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+/*
+Copyright 2020 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package v1
+
+import (
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"sigs.k8s.io/gateway-api/apis/v1beta1"
+)
+
+// +genclient
+// +kubebuilder:object:root=true
+// +kubebuilder:resource:categories=gateway-api,shortName=gtw
+// +kubebuilder:subresource:status
+// +kubebuilder:printcolumn:name="Class",type=string,JSONPath=`.spec.gatewayClassName`
+// +kubebuilder:printcolumn:name="Address",type=string,JSONPath=`.status.addresses[*].value`
+// +kubebuilder:printcolumn:name="Programmed",type=string,JSONPath=`.status.conditions[?(@.type=="Programmed")].status`
+// +kubebuilder:printcolumn:name="Age",type=date,JSONPath=`.metadata.creationTimestamp`
+
+// Gateway represents an instance of a service-traffic handling infrastructure
+// by binding Listeners to a set of IP addresses.
+type Gateway v1beta1.Gateway
+
+// +kubebuilder:object:root=true
+
+// GatewayList contains a list of Gateways.
+type GatewayList struct {
+	metav1.TypeMeta `json:",inline"`
+	metav1.ListMeta `json:"metadata,omitempty"`
+	Items           []Gateway `json:"items"`
+}
+
+// GatewaySpec defines the desired state of Gateway.
+//
+// Not all possible combinations of options specified in the Spec are
+// valid. Some invalid configurations can be caught synchronously via a
+// webhook, but there are many cases that will require asynchronous
+// signaling via the GatewayStatus block.
+// +k8s:deepcopy-gen=false
+type GatewaySpec = v1beta1.GatewaySpec
+
+// Listener embodies the concept of a logical endpoint where a Gateway accepts
+// network connections.
+// +k8s:deepcopy-gen=false
+type Listener = v1beta1.Listener
+
+// ProtocolType defines the application protocol accepted by a Listener.
+// Implementations are not required to accept all the defined protocols. If an
+// implementation does not support a specified protocol, it MUST set the
+// "Accepted" condition to False for the affected Listener with a reason of
+// "UnsupportedProtocol".
+//
+// Core ProtocolType values are listed in the table below.
+//
+// Implementations can define their own protocols if a core ProtocolType does not
+// exist. Such definitions must use prefixed name, such as
+// `mycompany.com/my-custom-protocol`. Un-prefixed names are reserved for core
+// protocols. Any protocol defined by implementations will fall under
+// implementation-specific conformance.
+//
+// Valid values include:
+//
+// * "HTTP" - Core support
+// * "example.com/bar" - Implementation-specific support
+//
+// Invalid values include:
+//
+// * "example.com" - must include path if domain is used
+// * "foo.example.com" - must include path if domain is used
+//
+// +kubebuilder:validation:MinLength=1
+// +kubebuilder:validation:MaxLength=255
+// +kubebuilder:validation:Pattern=`^[a-zA-Z0-9]([-a-zSA-Z0-9]*[a-zA-Z0-9])?$|[a-z0-9]([-a-z0-9]*[a-z0-9])?(\.[a-z0-9]([-a-z0-9]*[a-z0-9])?)*\/[A-Za-z0-9]+$`
+// +k8s:deepcopy-gen=false
+type ProtocolType = v1beta1.ProtocolType
+
+// GatewayTLSConfig describes a TLS configuration.
+// +k8s:deepcopy-gen=false
+type GatewayTLSConfig = v1beta1.GatewayTLSConfig
+
+// TLSModeType type defines how a Gateway handles TLS sessions.
+//
+// Note that values may be added to this enum, implementations
+// must ensure that unknown values will not cause a crash.
+//
+// Unknown values here must result in the implementation setting the
+// Ready Condition for the Listener to `status: False`, with a
+// Reason of `Invalid`.
+//
+// +kubebuilder:validation:Enum=Terminate;Passthrough
+// +k8s:deepcopy-gen=false
+type TLSModeType = v1beta1.TLSModeType
+
+// AllowedRoutes defines which Routes may be attached to this Listener.
+// +k8s:deepcopy-gen=false
+type AllowedRoutes = v1beta1.AllowedRoutes
+
+// FromNamespaces specifies namespace from which Routes may be attached to a
+// Gateway.
+//
+// Note that values may be added to this enum, implementations
+// must ensure that unknown values will not cause a crash.
+//
+// Unknown values here must result in the implementation setting the
+// Ready Condition for the Listener to `status: False`, with a
+// Reason of `Invalid`.
+//
+// +kubebuilder:validation:Enum=All;Selector;Same
+// +k8s:deepcopy-gen=false
+type FromNamespaces = v1beta1.FromNamespaces
+
+// RouteNamespaces indicate which namespaces Routes should be selected from.
+// +k8s:deepcopy-gen=false
+type RouteNamespaces = v1beta1.RouteNamespaces
+
+// RouteGroupKind indicates the group and kind of a Route resource.
+// +k8s:deepcopy-gen=false
+type RouteGroupKind = v1beta1.RouteGroupKind
+
+// GatewayAddress describes an address that can be bound to a Gateway.
+// +k8s:deepcopy-gen=false
+type GatewayAddress = v1beta1.GatewayAddress
+
+// GatewayStatus defines the observed state of Gateway.
+// +k8s:deepcopy-gen=false
+type GatewayStatus = v1beta1.GatewayStatus
+
+// GatewayConditionType is a type of condition associated with a
+// Gateway. This type should be used with the GatewayStatus.Conditions
+// field.
+// +k8s:deepcopy-gen=false
+type GatewayConditionType = v1beta1.GatewayConditionType
+
+// GatewayConditionReason defines the set of reasons that explain why a
+// particular Gateway condition type has been raised.
+// +k8s:deepcopy-gen=false
+type GatewayConditionReason = v1beta1.GatewayConditionReason
+
+// ListenerStatus is the status associated with a Listener.
+// +k8s:deepcopy-gen=false
+type ListenerStatus = v1beta1.ListenerStatus
+
+// ListenerConditionType is a type of condition associated with the
+// listener. This type should be used with the ListenerStatus.Conditions
+// field.
+// +k8s:deepcopy-gen=false
+type ListenerConditionType = v1beta1.ListenerConditionType
+
+// ListenerConditionReason defines the set of reasons that explain
+// why a particular Listener condition type has been raised.
+// +k8s:deepcopy-gen=false
+type ListenerConditionReason = v1beta1.ListenerConditionReason

src/apiserver/pkg/apis/gatewayapi/v1/gatewayclass_types.go

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+/*
+Copyright 2020 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package v1
+
+import (
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"sigs.k8s.io/gateway-api/apis/v1beta1"
+)
+
+// +genclient
+// +genclient:nonNamespaced
+// +kubebuilder:object:root=true
+// +kubebuilder:resource:categories=gateway-api,scope=Cluster,shortName=gc
+// +kubebuilder:subresource:status
+// +kubebuilder:printcolumn:name="Controller",type=string,JSONPath=`.spec.controllerName`
+// +kubebuilder:printcolumn:name="Accepted",type=string,JSONPath=`.status.conditions[?(@.type=="Accepted")].status`
+// +kubebuilder:printcolumn:name="Age",type=date,JSONPath=`.metadata.creationTimestamp`
+// +kubebuilder:printcolumn:name="Description",type=string,JSONPath=`.spec.description`,priority=1
+
+// GatewayClass describes a class of Gateways available to the user for creating
+// Gateway resources.
+//
+// It is recommended that this resource be used as a template for Gateways. This
+// means that a Gateway is based on the state of the GatewayClass at the time it
+// was created and changes to the GatewayClass or associated parameters are not
+// propagated down to existing Gateways. This recommendation is intended to
+// limit the blast radius of changes to GatewayClass or associated parameters.
+// If implementations choose to propagate GatewayClass changes to existing
+// Gateways, that MUST be clearly documented by the implementation.
+//
+// Whenever one or more Gateways are using a GatewayClass, implementations SHOULD
+// add the `gateway-exists-finalizer.gateway.networking.k8s.io` finalizer on the
+// associated GatewayClass. This ensures that a GatewayClass associated with a
+// Gateway is not deleted while in use.
+//
+// GatewayClass is a Cluster level resource.
+type GatewayClass v1beta1.GatewayClass
+
+// +kubebuilder:object:root=true
+
+// GatewayClassList contains a list of GatewayClass
+type GatewayClassList struct {
+	metav1.TypeMeta `json:",inline"`
+	metav1.ListMeta `json:"metadata,omitempty"`
+	Items           []GatewayClass `json:"items"`
+}
+
+// GatewayClassSpec reflects the configuration of a class of Gateways.
+// +k8s:deepcopy-gen=false
+type GatewayClassSpec = v1beta1.GatewayClassSpec
+
+// ParametersReference identifies an API object containing controller-specific
+// configuration resource within the cluster.
+// +k8s:deepcopy-gen=false
+type ParametersReference = v1beta1.ParametersReference
+
+// GatewayClassConditionType is the type for status conditions on
+// Gateway resources. This type should be used with the
+// GatewayClassStatus.Conditions field.
+// +k8s:deepcopy-gen=false
+type GatewayClassConditionType = v1beta1.GatewayClassConditionType
+
+// GatewayClassConditionReason defines the set of reasons that explain why a
+// particular GatewayClass condition type has been raised.
+// +k8s:deepcopy-gen=false
+type GatewayClassConditionReason = v1beta1.GatewayClassConditionReason
+
+// GatewayClassStatus is the current status for the GatewayClass.
+// +k8s:deepcopy-gen=false
+type GatewayClassStatus = v1beta1.GatewayClassStatus