mirror of
https://github.com/VictoriaMetrics/VictoriaMetrics.git
synced 2024-12-30 07:40:06 +01:00
80 lines
2.6 KiB
Go
80 lines
2.6 KiB
Go
/*
|
|
*
|
|
* Copyright 2021 Google LLC
|
|
*
|
|
* 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
|
|
*
|
|
* https://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 tokenmanager provides tokens for authenticating to S2A.
|
|
package tokenmanager
|
|
|
|
import (
|
|
"fmt"
|
|
"os"
|
|
|
|
commonpbv1 "github.com/google/s2a-go/internal/proto/common_go_proto"
|
|
commonpb "github.com/google/s2a-go/internal/proto/v2/common_go_proto"
|
|
)
|
|
|
|
const (
|
|
s2aAccessTokenEnvironmentVariable = "S2A_ACCESS_TOKEN"
|
|
)
|
|
|
|
// AccessTokenManager manages tokens for authenticating to S2A.
|
|
type AccessTokenManager interface {
|
|
// DefaultToken returns a token that an application with no specified local
|
|
// identity must use to authenticate to S2A.
|
|
DefaultToken() (token string, err error)
|
|
// Token returns a token that an application with local identity equal to
|
|
// identity must use to authenticate to S2A.
|
|
Token(identity interface{}) (token string, err error)
|
|
}
|
|
|
|
type singleTokenAccessTokenManager struct {
|
|
token string
|
|
}
|
|
|
|
// NewSingleTokenAccessTokenManager returns a new AccessTokenManager instance
|
|
// that will always manage the same token.
|
|
//
|
|
// The token to be managed is read from the s2aAccessTokenEnvironmentVariable
|
|
// environment variable. If this environment variable is not set, then this
|
|
// function returns an error.
|
|
func NewSingleTokenAccessTokenManager() (AccessTokenManager, error) {
|
|
token, variableExists := os.LookupEnv(s2aAccessTokenEnvironmentVariable)
|
|
if !variableExists {
|
|
return nil, fmt.Errorf("%s environment variable is not set", s2aAccessTokenEnvironmentVariable)
|
|
}
|
|
return &singleTokenAccessTokenManager{token: token}, nil
|
|
}
|
|
|
|
// DefaultToken always returns the token managed by the
|
|
// singleTokenAccessTokenManager.
|
|
func (m *singleTokenAccessTokenManager) DefaultToken() (string, error) {
|
|
return m.token, nil
|
|
}
|
|
|
|
// Token always returns the token managed by the singleTokenAccessTokenManager.
|
|
func (m *singleTokenAccessTokenManager) Token(identity interface{}) (string, error) {
|
|
switch v := identity.(type) {
|
|
case *commonpbv1.Identity:
|
|
// valid type.
|
|
case *commonpb.Identity:
|
|
// valid type.
|
|
default:
|
|
return "", fmt.Errorf("Incorrect identity type: %v", v)
|
|
}
|
|
return m.token, nil
|
|
}
|