forked from joeholley/supergloo
/
volume_info.go
147 lines (127 loc) · 3.46 KB
/
volume_info.go
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package istio
import (
"path/filepath"
"strings"
"github.com/pkg/errors"
"github.com/solo-io/solo-kit/pkg/api/v1/resources/core"
v1 "github.com/solo-io/supergloo/pkg/api/v1"
corev1 "k8s.io/api/core/v1"
)
const certSuffix = "certs"
var (
defaultMode int32 = 420
optional = true
)
type VolumeList []corev1.Volume
func (s VolumeList) Remove(i int) VolumeList {
tmp := make(VolumeList, len(s))
copy(tmp, s)
return append(tmp[:i], tmp[i+1:]...)
}
type VolumeMountList []corev1.VolumeMount
func (s VolumeMountList) Remove(i int) VolumeMountList {
tmp := make(VolumeMountList, len(s))
copy(tmp, s)
return append(tmp[:i], tmp[i+1:]...)
}
type DeploymentVolumeInfoList []DeploymentVolumeInfo
type DeploymentVolumeInfo struct {
Volume corev1.Volume
VolumeMount corev1.VolumeMount
}
func NewDeploymentVolumeInfo(mesh *v1.Mesh, tlsSecretName string) *DeploymentVolumeInfo {
certVolumeName := certVolumeName(mesh.Metadata.Ref())
volume := corev1.Volume{
Name: certVolumeName,
VolumeSource: corev1.VolumeSource{
Secret: &corev1.SecretVolumeSource{
Optional: &optional,
DefaultMode: &defaultMode,
SecretName: tlsSecretName,
},
},
}
volumeMount := corev1.VolumeMount{
Name: certVolumeName,
ReadOnly: true,
MountPath: certVolumePathName(mesh.Metadata.Ref()),
}
return &DeploymentVolumeInfo{
VolumeMount: volumeMount,
Volume: volume,
}
}
func (list DeploymentVolumeInfoList) containsVolume(volume corev1.Volume) bool {
for _, v := range list {
if v.Volume.Name == volume.Name {
return true
}
}
return false
}
func diff(newList DeploymentVolumeInfoList, oldList DeploymentVolumeInfoList) (added DeploymentVolumeInfoList, deleted DeploymentVolumeInfoList) {
for _, new := range newList {
found := false
for _, old := range oldList {
if new.Volume.Name == old.Volume.Name {
found = true
}
}
if !found {
added = append(added, new)
}
}
for _, old := range oldList {
found := false
for _, new := range newList {
if old.Volume.Name == new.Volume.Name {
found = true
}
}
if !found {
deleted = append(deleted, old)
}
}
return added, deleted
}
func volumesToDeploymentInfo(volumes VolumeList, mounts VolumeMountList) DeploymentVolumeInfoList {
var result DeploymentVolumeInfoList
for _, volume := range volumes {
if strings.Contains(volume.Name, certSuffix) {
for _, mount := range mounts {
if mount.Name == volume.Name {
result = append(result, DeploymentVolumeInfo{
VolumeMount: mount,
Volume: volume,
})
}
}
}
}
return result
}
func makeSecretVolumesForMeshes(meshes v1.MeshList) (DeploymentVolumeInfoList, error) {
result := make(DeploymentVolumeInfoList, len(meshes))
for i, mesh := range meshes {
var deploymentVolumeInfo *DeploymentVolumeInfo
switch mesh.MeshType.(type) {
case *v1.Mesh_Istio:
if mesh.MtlsConfig != nil && mesh.MtlsConfig.MtlsEnabled {
deploymentVolumeInfo = NewDeploymentVolumeInfo(mesh, "istio.default")
}
default:
return nil, errors.Errorf("unsupported mesh type found for mesh ingress "+
"target mesh, %s.%s", mesh.Metadata.Namespace, mesh.Metadata.Name)
}
if deploymentVolumeInfo != nil {
result[i] = *deploymentVolumeInfo
}
}
return result, nil
}
func certVolumeName(mesh core.ResourceRef) string {
return strings.Join([]string{mesh.Name, certSuffix}, "-")
}
func certVolumePathName(mesh core.ResourceRef) string {
return filepath.Join("/etc", "certs", mesh.Namespace, mesh.Name)
}