/
job.go
161 lines (147 loc) · 4.57 KB
/
job.go
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package backup
import (
"encoding/json"
"fmt"
"time"
batchv1 "k8s.io/api/batch/v1"
corev1 "k8s.io/api/core/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"github.com/percona/percona-backup-mongodb/pbm"
api "github.com/percona/percona-server-mongodb-operator/pkg/apis/psmdb/v1"
"github.com/pkg/errors"
)
func BackupCronJob(cr *api.PerconaServerMongoDB, task *api.BackupTaskSpec) (batchv1.CronJob, error) {
backupSpec := cr.Spec.Backup
containerArgs, err := newBackupCronJobContainerArgs(cr, task)
if err != nil {
return batchv1.CronJob{}, errors.Wrap(err, "cannot generate container arguments")
}
backupPod := corev1.PodSpec{
RestartPolicy: corev1.RestartPolicyNever,
ImagePullSecrets: cr.Spec.ImagePullSecrets,
ServiceAccountName: backupSpec.ServiceAccountName,
Containers: []corev1.Container{
{
Name: "backup",
Image: backupSpec.Image,
Command: []string{"sh"},
Env: []corev1.EnvVar{
{
Name: "NAMESPACE",
ValueFrom: &corev1.EnvVarSource{
FieldRef: &corev1.ObjectFieldSelector{
FieldPath: "metadata.namespace",
},
},
},
},
Args: containerArgs,
SecurityContext: backupSpec.ContainerSecurityContext,
Resources: backupSpec.Resources,
},
},
SecurityContext: backupSpec.PodSecurityContext,
RuntimeClassName: backupSpec.RuntimeClassName,
}
return batchv1.CronJob{
TypeMeta: metav1.TypeMeta{
APIVersion: "batch/v1",
Kind: "CronJob",
},
ObjectMeta: metav1.ObjectMeta{
Name: task.Name,
Namespace: cr.Namespace,
Labels: NewBackupCronJobLabels(cr.Name, backupSpec.Labels),
Annotations: backupSpec.Annotations,
},
Spec: batchv1.CronJobSpec{
Schedule: task.Schedule,
ConcurrencyPolicy: batchv1.ForbidConcurrent,
JobTemplate: batchv1.JobTemplateSpec{
ObjectMeta: metav1.ObjectMeta{
Labels: NewBackupCronJobLabels(cr.Name, backupSpec.Labels),
Annotations: backupSpec.Annotations,
},
Spec: batchv1.JobSpec{
Template: corev1.PodTemplateSpec{
ObjectMeta: metav1.ObjectMeta{
Labels: NewBackupCronJobLabels(cr.Name, backupSpec.Labels),
Annotations: backupSpec.Annotations,
},
Spec: backupPod,
},
},
},
},
}, nil
}
func NewBackupCronJobLabels(crName string, labels map[string]string) map[string]string {
base := make(map[string]string)
for k, v := range labels {
base[k] = v
}
base["app.kubernetes.io/name"] = "percona-server-mongodb"
base["app.kubernetes.io/instance"] = crName
base["app.kubernetes.io/replset"] = "general"
base["app.kubernetes.io/managed-by"] = "percona-server-mongodb-operator"
base["app.kubernetes.io/component"] = "backup-schedule"
base["app.kubernetes.io/part-of"] = "percona-server-mongodb"
return base
}
func BackupFromTask(cr *api.PerconaServerMongoDB, task *api.BackupTaskSpec) (*api.PerconaServerMongoDBBackup, error) {
shortClusterName := cr.Name
if len(shortClusterName) > 16 {
shortClusterName = shortClusterName[:16]
}
backupType := pbm.LogicalBackup
if len(task.Type) > 0 {
backupType = task.Type
}
backupCr := &api.PerconaServerMongoDBBackup{
TypeMeta: metav1.TypeMeta{
APIVersion: api.SchemeGroupVersion.String(),
Kind: "PerconaServerMongoDBBackup",
},
ObjectMeta: metav1.ObjectMeta{
Finalizers: []string{"delete-backup"},
GenerateName: "cron-" + shortClusterName + "-" + time.Now().Format("20060102150405") + "-",
Labels: map[string]string{
"ancestor": task.Name,
"cluster": cr.Name,
"type": "cron",
},
},
Spec: api.PerconaServerMongoDBBackupSpec{
Type: backupType,
ClusterName: cr.Name,
StorageName: task.StorageName,
Compression: task.CompressionType,
CompressionLevel: task.CompressionLevel,
},
}
if err := backupCr.CheckFields(); err != nil {
return nil, err
}
return backupCr, nil
}
func newBackupCronJobContainerArgs(cr *api.PerconaServerMongoDB, task *api.BackupTaskSpec) ([]string, error) {
backupCr, err := BackupFromTask(cr, task)
if err != nil {
return nil, err
}
backupCrJson, err := json.Marshal(backupCr)
if err != nil {
return nil, err
}
return []string{
"-c",
fmt.Sprintf(`curl \
-X POST \
--cacert /run/secrets/kubernetes.io/serviceaccount/ca.crt \
-H "Content-Type: application/json" \
-H "Authorization: Bearer $(cat /run/secrets/kubernetes.io/serviceaccount/token)" \
--data %q \
https://${KUBERNETES_SERVICE_HOST}:${KUBERNETES_SERVICE_PORT}/apis/%s/namespaces/${NAMESPACE}/perconaservermongodbbackups`,
backupCrJson, api.SchemeGroupVersion.String()),
}, nil
}