components-contrib/crypto/azure/keyvault/metadata.go

85 lines
2.1 KiB
Go

/*
Copyright 2023 The Dapr Authors
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package keyvault
import (
"errors"
"time"
"github.com/Azure/azure-sdk-for-go/sdk/azcore"
azauth "github.com/dapr/components-contrib/common/authentication/azure"
contribCrypto "github.com/dapr/components-contrib/crypto"
"github.com/dapr/kit/metadata"
)
const defaultRequestTimeout = 30 * time.Second
type keyvaultMetadata struct {
// Name of the Azure Key Vault resource (required).
VaultName string `json:"vaultName" mapstructure:"vaultName"`
// Timeout for network requests, as a Go duration string (e.g. "30s")
// Defaults to "30s".
RequestTimeout time.Duration `json:"requestTimeout" mapstructure:"requestTimeout"`
// Internal properties
vaultDNSSuffix string
cred azcore.TokenCredential
}
func (m *keyvaultMetadata) InitWithMetadata(meta contribCrypto.Metadata) error {
m.reset()
// Decode the metadata
err := metadata.DecodeMetadata(meta.Properties, &m)
if err != nil {
return err
}
// Vault name
if m.VaultName == "" {
return errors.New("metadata property 'vaultName' is required")
}
// Set default requestTimeout if empty
if m.RequestTimeout < time.Second {
m.RequestTimeout = defaultRequestTimeout
}
// Get the DNS suffix
settings, err := azauth.NewEnvironmentSettings(meta.Properties)
if err != nil {
return err
}
m.vaultDNSSuffix = settings.EndpointSuffix(azauth.ServiceAzureKeyVault)
// Get the credentials object
m.cred, err = settings.GetTokenCredential()
if err != nil {
return err
}
return nil
}
// Reset the object
func (m *keyvaultMetadata) reset() {
m.VaultName = ""
m.RequestTimeout = defaultRequestTimeout
m.vaultDNSSuffix = ""
m.cred = nil
}