/
token.go
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/
token.go
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// Copyright 2022 Upbound Inc
//
// 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 upbound
import (
"encoding/json"
"path/filepath"
"github.com/crossplane/crossplane-runtime/pkg/errors"
"github.com/spf13/afero"
)
const errInvalidTokenFile = "token file is invalid"
// TokenFile is the format in which Upbound tokens are stored on disk.
type TokenFile struct {
AccessID string `json:"accessId"`
Token string `json:"token"`
}
// tokenConf is the configuration for obtaining a token.
type tokenConf struct {
fs afero.Fs
}
// TokenOption modifies how a token is obtained.
type TokenOption func(conf *tokenConf)
// TokenFromPath extracts a token from the provided path.
func TokenFromPath(path string, opts ...TokenOption) (TokenFile, error) {
conf := &tokenConf{
fs: afero.NewOsFs(),
}
for _, o := range opts {
o(conf)
}
tf := TokenFile{}
f, err := conf.fs.Open(filepath.Clean(path))
if err != nil {
return tf, err
}
defer f.Close() //nolint:errcheck,gosec
if err := json.NewDecoder(f).Decode(&tf); err != nil {
return tf, err
}
if tf.AccessID == "" || tf.Token == "" {
return tf, errors.New(errInvalidTokenFile)
}
return tf, nil
}