openstack-operator/builders/deployment.go

74 lines
2.3 KiB
Go
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// Copyright 2020 VEXXHOST, Inc.
//
// 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 builders
import (
appsv1 "k8s.io/api/apps/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/utils/pointer"
"sigs.k8s.io/controller-runtime/pkg/controller/controllerutil"
)
// DeploymentBuilder defines the interface to build a deployment
type DeploymentBuilder struct {
obj *appsv1.Deployment
podTemplateSpec *PodTemplateSpecBuilder
owner metav1.Object
scheme *runtime.Scheme
labels map[string]string
}
// Deployment returns a new deployment builder
func Deployment(existing *appsv1.Deployment, owner metav1.Object, scheme *runtime.Scheme) *DeploymentBuilder {
return &DeploymentBuilder{
obj: existing,
labels: map[string]string{},
owner: owner,
scheme: scheme,
}
}
// Labels specifies labels for the deployment
func (d *DeploymentBuilder) Labels(labels map[string]string) *DeploymentBuilder {
d.labels = labels
d.obj.ObjectMeta.Labels = d.labels
d.obj.Spec.Selector = &metav1.LabelSelector{MatchLabels: d.labels}
return d
}
// Replicas defines the number of replicas
func (d *DeploymentBuilder) Replicas(replicas int32) *DeploymentBuilder {
d.obj.Spec.Replicas = pointer.Int32Ptr(replicas)
return d
}
// PodTemplateSpec defines a builder for the pod template spec
func (d *DeploymentBuilder) PodTemplateSpec(podTemplateSpec *PodTemplateSpecBuilder) *DeploymentBuilder {
d.podTemplateSpec = podTemplateSpec
return d
}
// Build creates a final deployment objet
func (d *DeploymentBuilder) Build() error {
podTemplateSpec, err := d.podTemplateSpec.Labels(d.labels).Build()
if err != nil {
return err
}
d.obj.Spec.Template = podTemplateSpec
return controllerutil.SetControllerReference(d.owner, d.obj, d.scheme)
}