harness-drone/plugin/secret/combine.go
2019-02-28 16:23:06 -08:00

68 lines
1.9 KiB
Go

// Copyright 2019 Drone IO, 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 secret
import (
"context"
"strings"
"github.com/drone/drone/core"
)
// Combine combines the secret services, allowing the system
// to get pipeline secrets from multiple sources.
func Combine(services ...core.SecretService) core.SecretService {
return &combined{services}
}
type combined struct {
sources []core.SecretService
}
func (c *combined) Find(ctx context.Context, in *core.SecretArgs) (*core.Secret, error) {
// Ignore any requests for the .docker/config.json file.
// This file is reserved for internal use only, and is
// never exposed to the build environment.
if isDockerConfig(in.Name) {
return nil, nil
}
for _, source := range c.sources {
secret, err := source.Find(ctx, in)
if err != nil {
return nil, err
}
if secret == nil {
continue
}
// if the secret object is not nil, but is empty
// we should assume the secret service returned a
// 204 no content, and proceed to the next service
// in the chain.
if secret.Data == "" {
continue
}
return secret, nil
}
return nil, nil
}
// helper function returns true if the build event matches the
// docker_auth_config variable name.
func isDockerConfig(name string) bool {
return strings.EqualFold(name, "docker_auth_config") ||
strings.EqualFold(name, ".dockerconfigjson") ||
strings.EqualFold(name, ".dockerconfig")
}