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feat(providers): add support for GCP KMS
Signed-off-by: Mateusz Hromada <[email protected]>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,83 @@ | ||
| package gkms | ||
|
|
||
| import ( | ||
| "context" | ||
| "encoding/base64" | ||
| "fmt" | ||
| "os" | ||
|
|
||
| "github.com/helmfile/vals/pkg/api" | ||
| "github.com/helmfile/vals/pkg/log" | ||
| "gopkg.in/yaml.v3" | ||
|
|
||
| kms "cloud.google.com/go/kms/apiv1" | ||
| kmspb "cloud.google.com/go/kms/apiv1/kmspb" | ||
| ) | ||
|
|
||
| type provider struct { | ||
| log *log.Logger | ||
| Project string | ||
| Location string | ||
| Keyring string | ||
| CryptoKey string | ||
| } | ||
|
|
||
| func New(l *log.Logger, cfg api.StaticConfig) *provider { | ||
| p := &provider{ | ||
| log: l, | ||
| } | ||
| p.Project = cfg.String("project") | ||
| p.Location = cfg.String("location") | ||
| p.Keyring = cfg.String("keyring") | ||
| p.CryptoKey = cfg.String("crypto_key") | ||
| return p | ||
| } | ||
|
|
||
| func (p *provider) GetString(key string) (string, error) { | ||
| ctx := context.Background() | ||
| value, err := p.getValue(ctx, key) | ||
| if err != nil { | ||
| return "", err | ||
| } | ||
| return string(value), nil | ||
| } | ||
|
|
||
| func (p *provider) GetStringMap(key string) (map[string]interface{}, error) { | ||
| ctx := context.Background() | ||
| value, err := p.getValue(ctx, key) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| var valueMap map[string]interface{} | ||
| if err := yaml.Unmarshal(value, &valueMap); err != nil { | ||
| return nil, fmt.Errorf("failed to unmarshal value: %w", err) | ||
| } | ||
| return valueMap, nil | ||
| } | ||
|
|
||
| func (p *provider) getValue(ctx context.Context, key string) ([]byte, error) { | ||
| c, err := kms.NewKeyManagementClient(ctx) | ||
| if err != nil { | ||
| fmt.Fprintf(os.Stderr, "failed to connect: %s", err) | ||
| return nil, err | ||
| } | ||
| defer func() { | ||
| if err := c.Close(); err != nil { | ||
| p.log.Debugf("gkms: %v", err) | ||
| } | ||
| }() | ||
| blob, err := base64.URLEncoding.DecodeString(key) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| req := &kmspb.DecryptRequest{ | ||
| Name: fmt.Sprintf("projects/%s/locations/%s/keyRings/%s/cryptoKeys/%s", p.Project, p.Location, p.Keyring, p.CryptoKey), | ||
| Ciphertext: blob, | ||
| } | ||
|
|
||
| resp, err := c.Decrypt(ctx, req) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| return resp.Plaintext, nil | ||
| } |
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