/
pod.go
270 lines (236 loc) · 7.25 KB
/
pod.go
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package runtime
import (
"strings"
"github.com/openshift/cluster-logging-operator/internal/utils"
corev1 "k8s.io/api/core/v1"
)
type PodBuilder struct {
Pod *corev1.Pod
}
// PodBuilderVisitor provides the ability to manipulate the PodBuilder with
// custom logic
type PodBuilderVisitor func(builder *PodBuilder) error
func NewPodBuilder(pod *corev1.Pod) *PodBuilder {
return &PodBuilder{
Pod: pod,
}
}
type ContainerBuilder struct {
container *corev1.Container
podBuilder *PodBuilder
initContainer bool
}
func (builder *ContainerBuilder) containers() *[]corev1.Container {
if builder.initContainer {
return &builder.podBuilder.Pod.Spec.InitContainers
} else {
return &builder.podBuilder.Pod.Spec.Containers
}
}
func (builder *ContainerBuilder) End() *PodBuilder {
containers := builder.containers()
*containers = append(*containers, *builder.container)
return builder.podBuilder
}
func (builder *ContainerBuilder) Update() *PodBuilder {
containers := builder.containers()
for i := range *containers {
if (*containers)[i].Name == builder.container.Name {
(*containers)[i] = *(builder.container)
break
}
}
return builder.podBuilder
}
func (builder *ContainerBuilder) AddVolumeMount(name, path, subPath string, readonly bool) *ContainerBuilder {
builder.container.VolumeMounts = append(builder.container.VolumeMounts, corev1.VolumeMount{
Name: name,
ReadOnly: readonly,
MountPath: path,
SubPath: subPath,
})
return builder
}
func (builder *ContainerBuilder) ResourceRequirements(resources corev1.ResourceRequirements) *ContainerBuilder {
builder.container.Resources = resources
return builder
}
func (builder *ContainerBuilder) WithCmdArgs(cmdArgs []string) *ContainerBuilder {
builder.container.Args = cmdArgs
return builder
}
func (builder *ContainerBuilder) WithCmd(cmdAgrgs []string) *ContainerBuilder {
builder.container.Command = []string{cmdAgrgs[0]}
builder.container.Args = cmdAgrgs[1:]
return builder
}
func (builder *ContainerBuilder) AddEnvVar(name, value string) *ContainerBuilder {
builder.container.Env = append(builder.container.Env, corev1.EnvVar{
Name: name,
Value: value,
})
return builder
}
func (builder *ContainerBuilder) AddEnvVarFromFieldRef(name, fieldRef string) *ContainerBuilder {
builder.container.Env = append(builder.container.Env, corev1.EnvVar{
Name: name,
ValueFrom: &corev1.EnvVarSource{
FieldRef: &corev1.ObjectFieldSelector{
FieldPath: fieldRef,
},
},
})
return builder
}
func (builder *ContainerBuilder) WithPodSecurity() *ContainerBuilder {
builder.container.SecurityContext = &corev1.SecurityContext{
AllowPrivilegeEscalation: utils.GetPtr(false),
RunAsNonRoot: utils.GetPtr(true),
Capabilities: &corev1.Capabilities{
Drop: []corev1.Capability{
"ALL",
},
},
SeccompProfile: &corev1.SeccompProfile{
Type: "RuntimeDefault",
},
}
return builder
}
func (builder *ContainerBuilder) WithPrivilege() *ContainerBuilder {
builder.container.SecurityContext = &corev1.SecurityContext{
Privileged: utils.GetPtr(true),
}
return builder
}
func (builder *ContainerBuilder) WithImagePullPolicy(policy corev1.PullPolicy) *ContainerBuilder {
builder.container.ImagePullPolicy = policy
return builder
}
func (builder *PodBuilder) AddContainer(name, image string) *ContainerBuilder {
containerBuilder := ContainerBuilder{
container: &corev1.Container{
Name: strings.ToLower(name),
Image: image,
Env: []corev1.EnvVar{},
ImagePullPolicy: corev1.PullIfNotPresent,
},
podBuilder: builder,
}
return &containerBuilder
}
func (builder *PodBuilder) AddConfigMapVolume(name, configMapName string) *PodBuilder {
return builder.AddConfigMapVolumeWithPermissions(name, configMapName, utils.GetPtr[int32](0644))
}
func (builder *PodBuilder) AddConfigMapVolumeWithPermissions(name, configMapName string, permissions *int32) *PodBuilder {
return builder.AddConfigMapWith(name, configMapName, func(volume corev1.Volume) corev1.Volume {
volume.VolumeSource.ConfigMap.DefaultMode = permissions
return volume
})
}
func (builder *PodBuilder) AddConfigMapWith(name, configMapName string, handler func(corev1.Volume) corev1.Volume) *PodBuilder {
volume := handler(corev1.Volume{
Name: name,
VolumeSource: corev1.VolumeSource{
ConfigMap: &corev1.ConfigMapVolumeSource{
LocalObjectReference: corev1.LocalObjectReference{
Name: configMapName,
},
},
},
})
builder.Pod.Spec.Volumes = append(builder.Pod.Spec.Volumes, volume)
return builder
}
func (builder *PodBuilder) AddSecretVolume(name, secretName string) *PodBuilder {
builder.Pod.Spec.Volumes = append(builder.Pod.Spec.Volumes, corev1.Volume{
Name: name,
VolumeSource: corev1.VolumeSource{
Secret: &corev1.SecretVolumeSource{
SecretName: secretName,
},
},
})
return builder
}
func (builder *PodBuilder) GetContainer(name string) *ContainerBuilder {
b := &ContainerBuilder{
podBuilder: builder,
}
lowerCaseName := strings.ToLower(name)
for i := range builder.Pod.Spec.Containers {
if builder.Pod.Spec.Containers[i].Name == lowerCaseName {
b.container = &builder.Pod.Spec.Containers[i]
return b
}
}
return b
}
func (builder *ContainerBuilder) WithImage(image string) *ContainerBuilder {
builder.container.Image = image
return builder
}
func (builder *ContainerBuilder) AddRunAsUser(uid int64) *ContainerBuilder {
builder.container.SecurityContext = &corev1.SecurityContext{
RunAsUser: &uid,
}
return builder
}
func (builder *PodBuilder) AddAnnotation(key, value string) *PodBuilder {
if builder.Pod.Annotations == nil {
builder.Pod.Annotations = map[string]string{}
}
builder.Pod.Annotations[key] = value
return builder
}
func (builder *PodBuilder) WithLabels(labels map[string]string) *PodBuilder {
builder.Pod.Labels = labels
return builder
}
func (builder *PodBuilder) AddLabels(labels map[string]string) *PodBuilder {
for k, v := range labels {
builder.Pod.Labels[k] = v
}
return builder
}
func (builder *PodBuilder) AddInitContainer(name, image string) *ContainerBuilder {
containerBuilder := ContainerBuilder{
container: &corev1.Container{
Name: strings.ToLower(name),
Image: image,
Env: []corev1.EnvVar{},
ImagePullPolicy: corev1.PullAlways,
},
podBuilder: builder,
initContainer: true,
}
return &containerBuilder
}
func (builder *PodBuilder) AddEmptyDirVolume(name string) *PodBuilder {
builder.Pod.Spec.Volumes = append(builder.Pod.Spec.Volumes, corev1.Volume{
Name: name,
VolumeSource: corev1.VolumeSource{
EmptyDir: &corev1.EmptyDirVolumeSource{},
},
})
return builder
}
func (builder *PodBuilder) AddHostPathVolume(name, path string) *PodBuilder {
builder.Pod.Spec.Volumes = append(builder.Pod.Spec.Volumes, corev1.Volume{
Name: name,
VolumeSource: corev1.VolumeSource{
HostPath: &corev1.HostPathVolumeSource{
Path: path,
},
},
})
return builder
}
func (builder *ContainerBuilder) AddContainerPort(name string, port int32) *ContainerBuilder {
builder.container.Ports = append(builder.container.Ports, corev1.ContainerPort{Name: name, ContainerPort: port})
return builder
}
func (builder *PodBuilder) AddHostAlias(hostAlias corev1.HostAlias) *PodBuilder {
builder.Pod.Spec.HostAliases = append(builder.Pod.Spec.HostAliases, hostAlias)
return builder
}