How to create docker Secret with client-go - kubernetes

Question

Assume I know the following secret parameters:
"name": "aaa",
"docker-server": "a.b.com",
"docker-username": "aaa",
"docker-password": "aaaa",
"docker-email": "aaa#gmail.com"
Then I want to use client-go to create a pull-image secret
secret := &corev1.Secret{
ObjectMeta: metav1.ObjectMeta{
Name: "pull-image-secret",
Namespace: "aaaaaa",
},
Type: "kubernetes.io/dockerconfigjson",
Data: map[string][]byte{".dockerconfigjson": []byte(secretData)},
}
err = k8sClient.Create(context.Background(), secret)
My question is, how to convert secret parameters into secretData?

Answer 1

From docs:
the data field of the Secret object must contain a .dockerconfigjson key, in which the content for the ~/.docker/config.json file is provided as a base64 encoded string
So if you want to use Data field you need to modify code to base64 encode secret data, something like that should work:
import b64 "encoding/base64"
...
base64EncodedData := make([]byte, b64.StdEncoding.EncodedLen(len(secretData)))
b64.StdEncoding.Encode(base64EncodedData, []byte(secretData))
secret := &corev1.Secret{
ObjectMeta: metav1.ObjectMeta{
Name: "pull-image-secret",
Namespace: "aaaaaa",
},
Type: "kubernetes.io/dockerconfigjson",
Data: map[string][]byte{".dockerconfigjson": base64EncodedData},
}
Otherwise, you can try to use StringData field without base64 encoding:
secret := &corev1.Secret{
ObjectMeta: metav1.ObjectMeta{
Name: "pull-image-secret",
Namespace: "aaaaaa",
},
Type: "kubernetes.io/dockerconfigjson",
StringData: map[string]string{".dockerconfigjson": secretData},
}