Add custom DHCPSubnet CRD and controller to gen them per vpcsubnet

PROJECT

@@ -199,4 +199,12 @@ resources:
     defaulting: true
     validation: true
     webhookVersion: v1
+- api:
+    crdVersion: v1
+    namespaced: true
+  domain: githedgehog.com
+  group: dhcp
+  kind: DHCPSubnet
+  path: go.githedgehog.com/fabric/api/dhcp/v1alpha2
+  version: v1alpha2
 version: "3"

api/dhcp/v1alpha2/dhcpsubnet_types.go

@@ -0,0 +1,78 @@
+/*
+Copyright 2023 Hedgehog.
+
+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 v1alpha2
+
+import (
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+)
+
+// NOTE: json tags are required.  Any new fields you add must have json tags for the fields to be serialized.
+
+// DHCPSubnetSpec defines the desired state of DHCPSubnet
+type DHCPSubnetSpec struct {
+	Subnet    string `json:"subnet"`    // e.g. vpc-0/default (vpc name + vpc subnet name)
+	CIDRBlock string `json:"cidrBlock"` // e.g. 10.10.10.0/24
+	Gateway   string `json:"gateway"`   // e.g. 10.10.10.1
+	StartIP   string `json:"startIP"`   // e.g. 10.10.10.10
+	EndIP     string `json:"endIP"`     // e.g. 10.10.10.99
+	VRF       string `json:"vrf"`       // e.g. VrfVvpc-1 as it's named on switch
+	CircuitID string `json:"circuitID"` // e.g. Vlan1000 as it's named on switch
+}
+
+// DHCPSubnetStatus defines the observed state of DHCPSubnet
+type DHCPSubnetStatus struct {
+	AllocatedIPs map[string]DHCPAllocatedIP `json:"allocatedIPs,omitempty"`
+}
+
+type DHCPAllocatedIP struct {
+	Expiry   metav1.Time `json:"expiry"`
+	MAC      string      `json:"mac"`
+	Hostname string      `json:"hostname"` // from dhcp request
+}
+
+// +kubebuilder:object:root=true
+// +kubebuilder:subresource:status
+// +kubebuilder:resource:categories=hedgehog;fabric,shortName=dhcp
+// +kubebuilder:printcolumn:name="Subnet",type=string,JSONPath=`.spec.subnet`,priority=0
+// +kubebuilder:printcolumn:name="CIDRBlock",type=string,JSONPath=`.spec.cidrBlock`,priority=0
+// +kubebuilder:printcolumn:name="Gateway",type=string,JSONPath=`.spec.gateway`,priority=0
+// +kubebuilder:printcolumn:name="StartIP",type=string,JSONPath=`.spec.startIP`,priority=0
+// +kubebuilder:printcolumn:name="EndIP",type=string,JSONPath=`.spec.endIP`,priority=0
+// +kubebuilder:printcolumn:name="VRF",type=string,JSONPath=`.spec.vrf`,priority=1
+// +kubebuilder:printcolumn:name="CircuitID",type=string,JSONPath=`.spec.circuitID`,priority=1
+// +kubebuilder:printcolumn:name="Age",type=date,JSONPath=`.metadata.creationTimestamp`,priority=0
+// DHCPSubnet is the Schema for the dhcpsubnets API
+type DHCPSubnet struct {
+	metav1.TypeMeta   `json:",inline"`
+	metav1.ObjectMeta `json:"metadata,omitempty"`
+
+	Spec   DHCPSubnetSpec   `json:"spec,omitempty"`
+	Status DHCPSubnetStatus `json:"status,omitempty"`
+}
+
+//+kubebuilder:object:root=true
+
+// DHCPSubnetList contains a list of DHCPSubnet
+type DHCPSubnetList struct {
+	metav1.TypeMeta `json:",inline"`
+	metav1.ListMeta `json:"metadata,omitempty"`
+	Items           []DHCPSubnet `json:"items"`
+}
+
+func init() {
+	SchemeBuilder.Register(&DHCPSubnet{}, &DHCPSubnetList{})
+}

api/dhcp/v1alpha2/groupversion_info.go

@@ -0,0 +1,36 @@
+/*
+Copyright 2023 Hedgehog.
+
+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 v1alpha2 contains API Schema definitions for the dhcp v1alpha2 API group
+// +kubebuilder:object:generate=true
+// +groupName=dhcp.githedgehog.com
+package v1alpha2
+
+import (
+	"k8s.io/apimachinery/pkg/runtime/schema"
+	"sigs.k8s.io/controller-runtime/pkg/scheme"
+)
+
+var (
+	// GroupVersion is group version used to register these objects
+	GroupVersion = schema.GroupVersion{Group: "dhcp.githedgehog.com", Version: "v1alpha2"}
+
+	// SchemeBuilder is used to add go types to the GroupVersionKind scheme
+	SchemeBuilder = &scheme.Builder{GroupVersion: GroupVersion}
+
+	// AddToScheme adds the types in this group-version to the given scheme.
+	AddToScheme = SchemeBuilder.AddToScheme
+)

cmd/main.go

@@ -37,6 +37,7 @@ import (
 	"sigs.k8s.io/controller-runtime/pkg/webhook"
 
 	agentv1alpha2 "go.githedgehog.com/fabric/api/agent/v1alpha2"
+	dhcpv1alpha2 "go.githedgehog.com/fabric/api/dhcp/v1alpha2"
 	vpcv1alpha2 "go.githedgehog.com/fabric/api/vpc/v1alpha2"
 	wiringv1alpha2 "go.githedgehog.com/fabric/api/wiring/v1alpha2"
 	agentcontroller "go.githedgehog.com/fabric/pkg/ctrl/agent"
@@ -68,6 +69,7 @@ func init() {
 	utilruntime.Must(agentv1alpha2.AddToScheme(scheme))
 	utilruntime.Must(wiringv1alpha2.AddToScheme(scheme))
 	utilruntime.Must(vpcv1alpha2.AddToScheme(scheme))
+	utilruntime.Must(dhcpv1alpha2.AddToScheme(scheme))
 	//+kubebuilder:scaffold:scheme
 }