/
volumn.go
51 lines (44 loc) · 1.65 KB
/
volumn.go
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package utils
import (
"fmt"
"os"
"strings"
corev1 "k8s.io/api/core/v1"
)
// VolumeReader is an interface that defines methods to interact with secret volumes in a Kubernetes environment.
type VolumeReader interface {
GetSecretFromVolume(selector *corev1.SecretKeySelector) (string, error)
GetSecretVolumePath(selector *corev1.SecretKeySelector) (string, error)
}
// NatsVolumeReader is a utility struct for reading secret volumes.
type NatsVolumeReader struct {
secretPath string
}
// NewNatsVolumeReader creates a new NatsVolumeReader with the specified secret path.
func NewNatsVolumeReader(secretPath string) *NatsVolumeReader {
return &NatsVolumeReader{
secretPath: secretPath,
}
}
// GetSecretFromVolume retrieves the value from a mounted secret volume. It trims any newline suffix from the value.
func (nvr *NatsVolumeReader) GetSecretFromVolume(selector *corev1.SecretKeySelector) (string, error) {
if selector == nil {
return "", fmt.Errorf("secret key selector is nil")
}
filePath, err := nvr.GetSecretVolumePath(selector)
if err != nil {
return "", err
}
data, err := os.ReadFile(filePath)
if err != nil {
return "", fmt.Errorf("failed to read secret (name: %s, key: %s): %w", selector.Name, selector.Key, err)
}
return strings.TrimSuffix(string(data), "\n"), nil
}
// GetSecretVolumePath constructs and returns the path of a mounted secret based on the secret key selector.
func (nvr *NatsVolumeReader) GetSecretVolumePath(selector *corev1.SecretKeySelector) (string, error) {
if selector == nil {
return "", fmt.Errorf("secret key selector is nil")
}
return fmt.Sprintf("%s/%s/%s", nvr.secretPath, selector.Name, selector.Key), nil
}