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// Copyright 2018 The LUCI 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 cipd
import (
"context"
"os"
"go.chromium.org/luci/cipd/client/cipd/pkg"
)
// deleteOnClose is os.File that self-deletes once it closes.
//
// Implements pkg.Source interface. Used by fetchInstanceNoCache.
type deleteOnClose struct {
*os.File
}
// Close closes the underlying file and then deletes it.
func (d deleteOnClose) Close(ctx context.Context, corrupt bool) (err error) {
name := d.File.Name()
defer func() {
if rmErr := os.Remove(name); err == nil && rmErr != nil && !os.IsNotExist(rmErr) {
err = rmErr
}
}()
return d.File.Close()
}
// UnderlyingFile is only used by tests and shouldn't be used directly.
func (d deleteOnClose) UnderlyingFile() *os.File {
return d.File
}
// underlyingFile is only used by tests.
func underlyingFile(i pkg.Source) *os.File {
return i.(interface {
UnderlyingFile() *os.File
}).UnderlyingFile()
}