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secretinjector.go
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secretinjector.go
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///////////////////////////////////////////////////////////////////////
// Copyright (c) 2017 VMware, Inc. All Rights Reserved.
// SPDX-License-Identifier: Apache-2.0
///////////////////////////////////////////////////////////////////////
package secretinjector
import (
"context"
apiclient "github.com/go-openapi/runtime/client"
"github.com/pkg/errors"
"github.com/vmware/dispatch/pkg/functions"
secretclient "github.com/vmware/dispatch/pkg/secret-store/gen/client"
"github.com/vmware/dispatch/pkg/secret-store/gen/client/secret"
log "github.com/sirupsen/logrus"
)
type secretInjector struct {
client *secretclient.SecretStore
}
// New create a new secret injector
func New(secretClient *secretclient.SecretStore) functions.SecretInjector {
return &secretInjector{client: secretClient}
}
type injectorError struct {
Err error `json:"err"`
}
func (err *injectorError) Error() string {
return err.Err.Error()
}
func (err *injectorError) AsUserErrorObject() interface{} {
return err
}
func (injector *secretInjector) getSecrets(secretNames []string, cookie string) (map[string]interface{}, error) {
secrets := make(map[string]interface{})
apiKeyAuth := apiclient.APIKeyAuth("cookie", "header", cookie)
for _, name := range secretNames {
resp, err := injector.client.Secret.GetSecret(&secret.GetSecretParams{
SecretName: name,
Context: context.Background(),
}, apiKeyAuth)
if err != nil {
return secrets, errors.Wrapf(err, "failed to get secrets from secret store")
}
if resp.Payload.Name == nil {
err := errors.Errorf("%s", name)
return secrets, err
}
secrets[*resp.Payload.Name] = resp.Payload.Secrets
}
return secrets, nil
}
func (injector *secretInjector) GetMiddleware(secretNames []string, cookie string) functions.Middleware {
return func(f functions.Runnable) functions.Runnable {
return func(ctx functions.Context, in interface{}) (interface{}, error) {
secrets, err := injector.getSecrets(secretNames, cookie)
if err != nil {
log.Errorf("error when get secrets from secret store %+v", err)
return nil, &injectorError{err}
}
ctx["secrets"] = secrets
out, err := f(ctx, in)
if err != nil {
return nil, err
}
return out, nil
}
}
}