/
builder.go
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/
builder.go
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package mysqlbackup
import (
"net/url"
"strconv"
"strings"
rdsv1alpha1 "github.com/hakur/rds-operator/apis/v1alpha1"
"github.com/hakur/util"
"github.com/jinzhu/copier"
batchv1 "k8s.io/api/batch/v1"
corev1 "k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/api/resource"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
)
type CronJobBuilder struct {
CR *rdsv1alpha1.MysqlBackup
}
func BuildSecret(cr *rdsv1alpha1.MysqlBackup) (secret *corev1.Secret) {
var hosts []string
var mysqlPort int
var s3SSLMode bool
var mysqlPassword []byte
var s3AccessKey []byte
var s3SecretAccessKey []byte
for _, v := range cr.Spec.Address {
if v.Port > 1 {
mysqlPort = 3306
} else {
mysqlPort = v.Port
}
hosts = append(hosts, v.Host+":"+strconv.Itoa(mysqlPort))
}
secret = new(corev1.Secret)
secret.ObjectMeta = metav1.ObjectMeta{
Name: cr.Name + "-backup-secret",
Namespace: cr.Namespace,
Labels: BuildLabels(cr),
Annotations: BuildAnnotations(cr),
}
s3URL, _ := url.Parse(cr.Spec.S3.Endpoint)
if s3URL.Scheme == "https" {
s3SSLMode = true
}
mysqlPassword = []byte(util.Base64Decode(cr.Spec.Password))
s3AccessKey = []byte(util.Base64Decode(cr.Spec.S3.AccessKey))
s3SecretAccessKey = []byte(util.Base64Decode(cr.Spec.S3.SecretAccessKey))
secret.Data = make(map[string][]byte)
secret.Data["MYSQL_USERNAME"] = []byte(cr.Spec.Username)
secret.Data["MYSQL_PWD"] = mysqlPassword
secret.Data["MYSQL_ADDRESSES"] = []byte(strings.Join(hosts, ","))
secret.Data["MYSQL_CLUSTER_MODE"] = []byte(cr.Spec.ClusterMode)
secret.Data["S3_ENDPOINT"] = []byte(s3URL.Host)
secret.Data["S3_SSL"] = []byte(strconv.FormatBool(s3SSLMode))
secret.Data["S3_BUCKET"] = []byte(cr.Spec.S3.Bucket)
secret.Data["S3_PATH"] = []byte(strings.Trim(cr.Spec.S3.Path, "/"))
secret.Data["S3_ACCESS_KEY"] = s3AccessKey
secret.Data["S3_SECRET_ACCESS_KEY"] = s3SecretAccessKey
secret.Data["LOCK_TABLE"] = []byte(strconv.FormatBool(cr.Spec.LockTable))
if cr.Spec.UseZlibCompress != nil && *cr.Spec.UseZlibCompress {
secret.Data["BACKUP_USE_ZLIB"] = []byte("true")
} else {
secret.Data["BACKUP_USE_ZLIB"] = []byte("false")
}
return
}
func (t *CronJobBuilder) BuildCronJob() (job *batchv1.CronJob, err error) {
job = new(batchv1.CronJob)
job.APIVersion = "batch/v1"
job.Kind = "CronJob"
job.ObjectMeta = metav1.ObjectMeta{
Name: t.CR.Name + "-mysqlbackup",
Namespace: t.CR.Namespace,
Labels: BuildLabels(t.CR),
Annotations: BuildAnnotations(t.CR),
}
jobSpec, err := t.buildJobSpec()
if err != nil {
return nil, err
}
job.Spec = batchv1.CronJobSpec{
JobTemplate: batchv1.JobTemplateSpec{
Spec: jobSpec,
},
Schedule: t.CR.Spec.Schedule,
}
return
}
func (t *CronJobBuilder) buildJobSpec() (spec batchv1.JobSpec, err error) {
volumes, err := t.buildVolume()
var parallel int32 = 1
var ttlSeconds int32 = 300
spec = batchv1.JobSpec{
Parallelism: ¶llel,
TTLSecondsAfterFinished: &ttlSeconds,
Template: corev1.PodTemplateSpec{
Spec: corev1.PodSpec{
Containers: []corev1.Container{t.buildMainContainer()},
Volumes: volumes,
RestartPolicy: "OnFailure",
},
},
}
return
}
func (t *CronJobBuilder) buildMainContainer() (container corev1.Container) {
secret := BuildSecret(t.CR)
container = corev1.Container{
Name: "upload",
Image: t.CR.Spec.Image,
Command: t.CR.Spec.Command,
Args: t.CR.Spec.Args,
EnvFrom: []corev1.EnvFromSource{
{
SecretRef: &corev1.SecretEnvSource{
LocalObjectReference: corev1.LocalObjectReference{Name: secret.Name},
},
},
},
VolumeMounts: []corev1.VolumeMount{
{Name: "data", MountPath: "/data"},
},
Resources: t.CR.Spec.Resources,
}
return
}
func (t *CronJobBuilder) buildVolume() (volumes []corev1.Volume, err error) {
if t.CR.Spec.PVCName != nil {
volumes = append(volumes, corev1.Volume{
Name: "data",
VolumeSource: corev1.VolumeSource{
PersistentVolumeClaim: &corev1.PersistentVolumeClaimVolumeSource{
ClaimName: *t.CR.Spec.PVCName,
},
},
})
} else {
quantity, err := resource.ParseQuantity(t.CR.Spec.StorageSize)
if err != nil {
return nil, err
}
volumes = append(volumes, corev1.Volume{
Name: "data",
VolumeSource: corev1.VolumeSource{
EmptyDir: &corev1.EmptyDirVolumeSource{
SizeLimit: &quantity,
},
},
})
}
var scriptsDefaultMode int32 = 0755
volumes = append(volumes, corev1.Volume{
Name: "scripts",
VolumeSource: corev1.VolumeSource{
ConfigMap: &corev1.ConfigMapVolumeSource{
LocalObjectReference: corev1.LocalObjectReference{
Name: BuildScriptsConfigMapName(t.CR),
},
DefaultMode: &scriptsDefaultMode,
},
},
})
return
}
func BuildLabels(cr *rdsv1alpha1.MysqlBackup) (labels map[string]string) {
labels = map[string]string{
"app": "mysqlbackup",
"cr-name": cr.Name,
"api-group": rdsv1alpha1.GroupVersion.Group,
}
copier.CopyWithOption(labels, cr.Labels, copier.Option{DeepCopy: true})
return
}
func BuildAnnotations(cr *rdsv1alpha1.MysqlBackup) (annotations map[string]string) {
annotations = map[string]string{}
copier.CopyWithOption(annotations, cr.Annotations, copier.Option{DeepCopy: true})
return
}
func BuildScriptsConfigMapName(cr *rdsv1alpha1.MysqlBackup) string {
return cr.Name + "-backup-scripts"
}