/
param.go
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/
param.go
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// Copyright 2019 The Kanister 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 param
import (
"context"
"fmt"
"strconv"
"strings"
"time"
osversioned "github.com/openshift/client-go/apps/clientset/versioned"
"github.com/pkg/errors"
corev1 "k8s.io/api/core/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/runtime/schema"
"k8s.io/client-go/dynamic"
"k8s.io/client-go/kubernetes"
crv1alpha1 "github.com/kanisterio/kanister/pkg/apis/cr/v1alpha1"
"github.com/kanisterio/kanister/pkg/client/clientset/versioned"
"github.com/kanisterio/kanister/pkg/kopia/command"
"github.com/kanisterio/kanister/pkg/kube"
"github.com/kanisterio/kanister/pkg/log"
"github.com/kanisterio/kanister/pkg/secrets"
)
const (
timeFormat = time.RFC3339Nano
clusterLocalDomain = "svc.cluster.local"
)
// TemplateParams are the values that will change between separate runs of Phases.
type TemplateParams struct {
StatefulSet *StatefulSetParams
DeploymentConfig *DeploymentConfigParams
Deployment *DeploymentParams
PVC *PVCParams
Namespace *NamespaceParams
ArtifactsIn map[string]crv1alpha1.Artifact
ConfigMaps map[string]corev1.ConfigMap
Secrets map[string]corev1.Secret
Time string
Profile *Profile
RepositoryServer *RepositoryServer
Options map[string]string
Object map[string]interface{}
Phases map[string]*Phase
DeferPhase *Phase
PodOverride crv1alpha1.JSONMap
}
// DeploymentConfigParams are params for deploymentconfig, will be used if working on open shift cluster
// https://docs.openshift.com/container-platform/4.1/applications/deployments/what-deployments-are.html
type DeploymentConfigParams struct {
Name string
Namespace string
Pods []string
Containers [][]string
PersistentVolumeClaims map[string]map[string]string
}
// StatefulSetParams are params for stateful sets.
type StatefulSetParams struct {
Name string
Namespace string
Pods []string
Containers [][]string
PersistentVolumeClaims map[string]map[string]string
}
// DeploymentParams are params for deployments
type DeploymentParams struct {
Name string
Namespace string
Pods []string
Containers [][]string
PersistentVolumeClaims map[string]map[string]string
}
// PVCParams are params for persistent volume claims
type PVCParams struct {
Name string
Namespace string
}
// NamespaceParams are params for namespaces
type NamespaceParams struct {
Name string
Namespace string
}
// Profile contains where to store artifacts and how to access them.
type Profile struct {
Location crv1alpha1.Location
Credential Credential
SkipSSLVerify bool
}
// CredentialType
type CredentialType string
const (
CredentialTypeKeyPair CredentialType = "keyPair"
CredentialTypeSecret CredentialType = "secret"
CredentialTypeKopia CredentialType = "kopia"
)
// Credential resolves the storage
type Credential struct {
Type CredentialType
KeyPair *KeyPair
Secret *corev1.Secret
KopiaServerSecret *KopiaServerCreds
}
// KeyPair is a credential that contains two strings: an ID and a secret.
type KeyPair struct {
ID string
Secret string
}
// KopiaServerCreds contains creds to communicate with Kopia server
type KopiaServerCreds struct {
Username string
Hostname string
Password string
Cert string
ConnectOptions map[string]int
}
// RepositoryServer contains fields from Repository server CR that will be used to resolve go templates for repository server in blueprint
type RepositoryServer struct {
Name string
Namespace string
ServerInfo crv1alpha1.ServerInfo
Username string
Credentials RepositoryServerCredentials
Address string
ContentCacheMB int
MetadataCacheMB int
}
type RepositoryServerCredentials struct {
ServerTLS corev1.Secret
ServerUserAccess corev1.Secret
}
// Phase represents a Blueprint phase and contains the phase output
type Phase struct {
Secrets map[string]corev1.Secret
Output map[string]interface{}
}
const (
DeploymentKind = "deployment"
StatefulSetKind = "statefulset"
DeploymentConfigKind = "deploymentconfig"
PVCKind = "pvc"
NamespaceKind = "namespace"
SecretKind = "secret"
)
// New function fetches and returns the desired params
func New(ctx context.Context, cli kubernetes.Interface, dynCli dynamic.Interface, crCli versioned.Interface, osCli osversioned.Interface, as crv1alpha1.ActionSpec) (*TemplateParams, error) {
secrets, err := fetchSecrets(ctx, cli, as.Secrets)
if err != nil {
return nil, err
}
cms, err := fetchConfigMaps(ctx, cli, as.ConfigMaps)
if err != nil {
return nil, err
}
prof, err := fetchProfile(ctx, cli, crCli, as.Profile)
if err != nil {
return nil, err
}
repoServer, err := fetchRepositoryServer(ctx, cli, crCli, as.RepositoryServer)
if err != nil {
return nil, err
}
now := time.Now().UTC()
tp := TemplateParams{
ArtifactsIn: as.Artifacts,
ConfigMaps: cms,
Secrets: secrets,
Profile: prof,
RepositoryServer: repoServer,
Time: now.Format(timeFormat),
Options: as.Options,
PodOverride: as.PodOverride,
}
var gvr schema.GroupVersionResource
namespace := as.Object.Namespace
switch strings.ToLower(as.Object.Kind) {
case StatefulSetKind:
ssp, err := fetchStatefulSetParams(ctx, cli, as.Object.Namespace, as.Object.Name)
if err != nil {
return nil, err
}
tp.StatefulSet = ssp
gvr = schema.GroupVersionResource{Group: "apps", Version: "v1", Resource: "statefulsets"}
case DeploymentConfigKind:
dcp, err := fetchDeploymentConfigParams(ctx, cli, osCli, as.Object.Namespace, as.Object.Name)
if err != nil {
return nil, err
}
tp.DeploymentConfig = dcp
gvr = schema.GroupVersionResource{Group: "apps.openshift.io", Version: "v1", Resource: "deploymentconfigs"}
case DeploymentKind:
dp, err := fetchDeploymentParams(ctx, cli, as.Object.Namespace, as.Object.Name)
if err != nil {
return nil, err
}
tp.Deployment = dp
gvr = schema.GroupVersionResource{Group: "apps", Version: "v1", Resource: "deployments"}
case PVCKind:
pp, err := fetchPVCParams(ctx, cli, as.Object.Namespace, as.Object.Name)
if err != nil {
return nil, err
}
tp.PVC = pp
gvr = schema.GroupVersionResource{Group: "", Version: "v1", Resource: "persistentvolumeclaims"}
case NamespaceKind:
tp.Namespace = &NamespaceParams{Name: as.Object.Namespace, Namespace: as.Object.Namespace}
gvr = schema.GroupVersionResource{Group: "", Version: "v1", Resource: "namespaces"}
// `Namespace` is a global resource
namespace = ""
default:
gvr = schema.GroupVersionResource{
Group: as.Object.Group,
Version: as.Object.APIVersion,
Resource: as.Object.Resource,
}
}
u, err := kube.FetchUnstructuredObjectWithCli(ctx, dynCli, gvr, namespace, as.Object.Name)
if err != nil {
return nil, errors.Wrapf(err, "could not fetch object name: %s, namespace: %s, group: %s, version: %s, resource: %s", as.Object.Name, namespace, gvr.Group, gvr.Version, gvr.Resource)
}
tp.Object = u.UnstructuredContent()
return &tp, nil
}
func fetchProfile(ctx context.Context, cli kubernetes.Interface, crCli versioned.Interface, ref *crv1alpha1.ObjectReference) (*Profile, error) {
if ref == nil {
log.Debug().Print("Executing the action without a profile")
return nil, nil
}
p, err := crCli.CrV1alpha1().Profiles(ref.Namespace).Get(ctx, ref.Name, metav1.GetOptions{})
if err != nil {
return nil, errors.WithStack(err)
}
cred, err := fetchCredential(ctx, cli, p.Credential)
if err != nil {
return nil, errors.WithStack(err)
}
return &Profile{
Location: p.Location,
Credential: *cred,
SkipSSLVerify: p.SkipSSLVerify,
}, nil
}
func fetchRepositoryServer(ctx context.Context, cli kubernetes.Interface, crCli versioned.Interface, ref *crv1alpha1.ObjectReference) (*RepositoryServer, error) {
if ref == nil {
log.Debug().Print("Executing the action without a repository-server")
return nil, nil
}
r, err := crCli.CrV1alpha1().RepositoryServers(ref.Namespace).Get(ctx, ref.Name, metav1.GetOptions{})
if err != nil {
return nil, errors.WithStack(err)
}
serverTLS, err := secretFromSecretRef(ctx, cli, r.Spec.Server.TLSSecretRef)
if err != nil {
return nil, err
}
serverUserAccess, err := secretFromSecretRef(ctx, cli, r.Spec.Server.UserAccess.UserAccessSecretRef)
if err != nil {
return nil, err
}
repoServerSecrets := RepositoryServerCredentials{
ServerTLS: *serverTLS,
ServerUserAccess: *serverUserAccess,
}
repositoryServerService, err := cli.CoreV1().Services(r.Namespace).Get(ctx, r.Status.ServerInfo.ServiceName, metav1.GetOptions{})
if err != nil {
return nil, errors.Wrap(err, "Error Fetching Repository Server Service")
}
repositoryServerAddress := fmt.Sprintf("https://%s.%s.%s:%d", repositoryServerService.Name, repositoryServerService.Namespace, clusterLocalDomain, repositoryServerService.Spec.Ports[0].Port)
cacheSizeSettings := getKopiaRepositoryCacheSize(r)
return &RepositoryServer{
Name: r.Name,
Namespace: r.Namespace,
ServerInfo: r.Status.ServerInfo,
Username: r.Spec.Server.UserAccess.Username,
Credentials: repoServerSecrets,
Address: repositoryServerAddress,
ContentCacheMB: *cacheSizeSettings.Content,
MetadataCacheMB: *cacheSizeSettings.Metadata,
}, nil
}
func getKopiaRepositoryCacheSize(rs *crv1alpha1.RepositoryServer) crv1alpha1.CacheSizeSettings {
defaultContentCacheMB, defaultMetadataCacheMB := command.GetGeneralCacheSizeSettings()
cacheSizeSettings := crv1alpha1.CacheSizeSettings{
Metadata: &defaultMetadataCacheMB,
Content: &defaultContentCacheMB,
}
if rs.Spec.Repository.CacheSizeSettings.Content != nil {
cacheSizeSettings.Content = rs.Spec.Repository.CacheSizeSettings.Content
}
if rs.Spec.Repository.CacheSizeSettings.Metadata != nil {
cacheSizeSettings.Metadata = rs.Spec.Repository.CacheSizeSettings.Metadata
}
return cacheSizeSettings
}
func fetchCredential(ctx context.Context, cli kubernetes.Interface, c crv1alpha1.Credential) (*Credential, error) {
switch c.Type {
case crv1alpha1.CredentialTypeKeyPair:
return fetchKeyPairCredential(ctx, cli, c.KeyPair)
case crv1alpha1.CredentialTypeSecret:
return fetchSecretCredential(ctx, cli, c.Secret)
case crv1alpha1.CredentialTypeKopia:
return fetchKopiaCredential(ctx, cli, c.KopiaServerSecret)
default:
return nil, errors.Errorf("CredentialType '%s' not supported", c.Type)
}
}
func fetchKeyPairCredential(ctx context.Context, cli kubernetes.Interface, c *crv1alpha1.KeyPair) (*Credential, error) {
if c == nil {
return nil, errors.New("KVSecret cannot be nil")
}
s, err := cli.CoreV1().Secrets(c.Secret.Namespace).Get(ctx, c.Secret.Name, metav1.GetOptions{})
if err != nil {
return nil, errors.WithStack(err)
}
if _, ok := s.Data[c.IDField]; !ok {
return nil, errors.Errorf("Key '%s' not found in secret '%s:%s'", c.IDField, s.GetNamespace(), s.GetName())
}
if _, ok := s.Data[c.SecretField]; !ok {
return nil, errors.Errorf("Value '%s' not found in secret '%s:%s'", c.SecretField, s.GetNamespace(), s.GetName())
}
return &Credential{
Type: CredentialTypeKeyPair,
KeyPair: &KeyPair{
ID: string(s.Data[c.IDField]),
Secret: string(s.Data[c.SecretField]),
},
}, nil
}
func fetchSecretCredential(ctx context.Context, cli kubernetes.Interface, sr *crv1alpha1.ObjectReference) (*Credential, error) {
if sr == nil {
return nil, errors.New("Secret reference cannot be nil")
}
s, err := cli.CoreV1().Secrets(sr.Namespace).Get(ctx, sr.Name, metav1.GetOptions{})
if err != nil {
return nil, errors.Wrap(err, "Failed to fetch the secret")
}
if err = secrets.ValidateCredentials(s); err != nil {
return nil, err
}
return &Credential{
Type: CredentialTypeSecret,
Secret: s,
}, nil
}
func secretFromSecretRef(ctx context.Context, cli kubernetes.Interface, ref corev1.SecretReference) (*corev1.Secret, error) {
secret, err := cli.CoreV1().Secrets(ref.Namespace).Get(ctx, ref.Name, metav1.GetOptions{})
if err != nil {
return nil, errors.Wrap(err, fmt.Sprintf("Error fetching secret %s from namespace %s", ref.Name, ref.Namespace))
}
return secret, nil
}
func filterByKind(refs map[string]crv1alpha1.ObjectReference, kind string) map[string]crv1alpha1.ObjectReference {
filtered := make(map[string]crv1alpha1.ObjectReference, len(refs))
for name, ref := range refs {
if !strings.EqualFold(ref.Kind, kind) {
continue
}
filtered[name] = ref
}
return filtered
}
func fetchSecrets(ctx context.Context, cli kubernetes.Interface, refs map[string]crv1alpha1.ObjectReference) (map[string]corev1.Secret, error) {
secrets := make(map[string]corev1.Secret, len(refs))
for name, ref := range refs {
s, err := cli.CoreV1().Secrets(ref.Namespace).Get(ctx, ref.Name, metav1.GetOptions{})
if err != nil {
return nil, errors.WithStack(err)
}
secrets[name] = *s
}
return secrets, nil
}
func fetchConfigMaps(ctx context.Context, cli kubernetes.Interface, refs map[string]crv1alpha1.ObjectReference) (map[string]corev1.ConfigMap, error) {
configs := make(map[string]corev1.ConfigMap, len(refs))
for name, ref := range refs {
c, err := cli.CoreV1().ConfigMaps(ref.Namespace).Get(ctx, ref.Name, metav1.GetOptions{})
if err != nil {
return nil, errors.WithStack(err)
}
configs[name] = *c
}
return configs, nil
}
func fetchStatefulSetParams(ctx context.Context, cli kubernetes.Interface, namespace, name string) (*StatefulSetParams, error) {
ss, err := cli.AppsV1().StatefulSets(namespace).Get(ctx, name, metav1.GetOptions{})
if err != nil {
return nil, errors.WithStack(err)
}
ssp := &StatefulSetParams{
Name: name,
Namespace: namespace,
Pods: []string{},
Containers: [][]string{},
PersistentVolumeClaims: make(map[string]map[string]string),
}
pods, _, err := kube.FetchPods(cli, namespace, ss.UID)
if err != nil {
return nil, err
}
for _, p := range pods {
ssp.Pods = append(ssp.Pods, p.Name)
ssp.Containers = append(ssp.Containers, containerNames(p))
if pvcToMountPath := volumes(p, kube.StatefulSetVolumes(cli, ss, &p)); len(pvcToMountPath) > 0 {
ssp.PersistentVolumeClaims[p.Name] = pvcToMountPath
}
}
return ssp, nil
}
func fetchDeploymentConfigParams(ctx context.Context, cli kubernetes.Interface, osCli osversioned.Interface, namespace, name string) (*DeploymentConfigParams, error) {
// we will have to have another OpenShift cli to get the deployment config resource
// because deploymentconfig is not standard kubernetes resource.
dc, err := osCli.AppsV1().DeploymentConfigs(namespace).Get(ctx, name, metav1.GetOptions{})
if err != nil {
return nil, errors.WithStack(err)
}
dcp := &DeploymentConfigParams{
Name: name,
Namespace: namespace,
Pods: []string{},
Containers: [][]string{},
PersistentVolumeClaims: make(map[string]map[string]string),
}
// deployment configs are managed by replicationcontrollers not replicaset
// get the replication controller of the deploymentconfig
rc, err := kube.FetchReplicationController(cli, namespace, dc.UID, strconv.FormatInt(dc.Status.LatestVersion, 10))
if err != nil {
return nil, err
}
pods, _, err := kube.FetchPods(cli, namespace, rc.UID)
if err != nil {
return nil, err
}
for _, p := range pods {
dcp.Pods = append(dcp.Pods, p.Name)
dcp.Containers = append(dcp.Containers, containerNames(p))
if pvcToMountPath := volumes(p, kube.DeploymentConfigVolumes(osCli, dc, &p)); len(pvcToMountPath) > 0 {
dcp.PersistentVolumeClaims[p.Name] = pvcToMountPath
}
}
return dcp, nil
}
func fetchDeploymentParams(ctx context.Context, cli kubernetes.Interface, namespace, name string) (*DeploymentParams, error) {
d, err := cli.AppsV1().Deployments(namespace).Get(ctx, name, metav1.GetOptions{})
if err != nil {
return nil, errors.WithStack(err)
}
dp := &DeploymentParams{
Name: name,
Namespace: namespace,
Pods: []string{},
Containers: [][]string{},
PersistentVolumeClaims: make(map[string]map[string]string),
}
rs, err := kube.FetchReplicaSet(cli, namespace, d.UID, d.Annotations[kube.RevisionAnnotation])
if err != nil {
return nil, err
}
pods, _, err := kube.FetchPods(cli, namespace, rs.UID)
if err != nil {
return nil, err
}
volToPvc := make(map[string]string)
if len(pods) > 0 {
volToPvc = kube.DeploymentVolumes(cli, d)
}
for _, p := range pods {
dp.Pods = append(dp.Pods, p.Name)
dp.Containers = append(dp.Containers, containerNames(p))
pvcToMountPath := volumes(p, volToPvc)
if len(pvcToMountPath) > 0 {
dp.PersistentVolumeClaims[p.Name] = pvcToMountPath
}
}
return dp, nil
}
func containerNames(pod corev1.Pod) []string {
cs := make([]string, 0, len(pod.Status.ContainerStatuses))
for _, c := range pod.Status.ContainerStatuses {
cs = append(cs, c.Name)
}
return cs
}
func volumes(pod corev1.Pod, volToPvc map[string]string) map[string]string {
pvcToMountPath := make(map[string]string)
for _, c := range pod.Spec.Containers {
for _, v := range c.VolumeMounts {
if pvc, ok := volToPvc[v.Name]; ok {
pvcToMountPath[pvc] = v.MountPath
}
}
}
return pvcToMountPath
}
func fetchPVCParams(ctx context.Context, cli kubernetes.Interface, namespace, name string) (*PVCParams, error) {
_, err := cli.CoreV1().PersistentVolumeClaims(namespace).Get(ctx, name, metav1.GetOptions{})
if err != nil {
return nil, errors.WithStack(err)
}
return &PVCParams{
Name: name,
Namespace: namespace,
}, nil
}
func fetchKopiaCredential(ctx context.Context, cli kubernetes.Interface, ks *crv1alpha1.KopiaServerSecret) (*Credential, error) {
if ks == nil {
return nil, errors.New("Kopia Secret reference cannot be nil")
}
if ks.UserPassphrase.Secret == nil {
return nil, errors.New("Kopia UserPassphrase Secret reference cannot be nil")
}
passSecret, err := cli.CoreV1().Secrets(ks.UserPassphrase.Secret.Namespace).Get(ctx, ks.UserPassphrase.Secret.Name, metav1.GetOptions{})
if err != nil {
return nil, errors.Wrapf(err, "Failed to fetch the secret %s/%s", ks.UserPassphrase.Secret.Namespace, ks.UserPassphrase.Secret.Name)
}
password, ok := passSecret.Data[ks.UserPassphrase.Key]
if !ok {
return nil, errors.New("Failed to fetch user passphrase from secret")
}
if ks.TLSCert == nil || ks.TLSCert.Secret == nil {
return nil, errors.New("Kopia TLS cert Secret reference cannot be nil")
}
tlsSecret, err := cli.CoreV1().Secrets(ks.TLSCert.Secret.Namespace).Get(ctx, ks.TLSCert.Secret.Name, metav1.GetOptions{})
if err != nil {
return nil, errors.Wrapf(err, "Failed to fetch the secret %s/%s", ks.TLSCert.Secret.Namespace, ks.TLSCert.Secret.Name)
}
tlsCert, ok := tlsSecret.Data[ks.TLSCert.Key]
if !ok {
return nil, errors.New("Failed to fetch TLS cert from secret")
}
return &Credential{
Type: CredentialTypeKopia,
KopiaServerSecret: &KopiaServerCreds{
Hostname: ks.Hostname,
Username: ks.Username,
Password: string(password),
Cert: string(tlsCert),
ConnectOptions: ks.ConnectOptions,
},
}, nil
}
// UpdatePhaseParams updates the TemplateParams with Phase information
func UpdatePhaseParams(ctx context.Context, tp *TemplateParams, phaseName string, output map[string]interface{}) {
tp.Phases[phaseName].Output = output
}
// UpdateDeferPhaseParams updates the TemplateParams deferPhase output with passed output
// This output would be generated/passed by execution of the phase
func UpdateDeferPhaseParams(ctx context.Context, tp *TemplateParams, output map[string]interface{}) {
tp.DeferPhase.Output = output
}
// InitPhaseParams initializes the TemplateParams with Phase information
func InitPhaseParams(ctx context.Context, cli kubernetes.Interface, tp *TemplateParams, phaseName string, objects map[string]crv1alpha1.ObjectReference) error {
if tp.Phases == nil {
tp.Phases = make(map[string]*Phase)
}
secrets, err := fetchSecrets(ctx, cli, filterByKind(objects, SecretKind))
if err != nil {
return err
}
tp.Phases[phaseName] = &Phase{
Secrets: secrets,
}
tp.DeferPhase = &Phase{
Secrets: secrets,
}
return nil
}