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ingest.go
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/
ingest.go
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// Copyright 2022 Namespace Labs Inc; All rights reserved.
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
package oci
import (
"compress/gzip"
"context"
"io"
"io/fs"
"github.com/google/go-containerregistry/pkg/v1/tarball"
"namespacelabs.dev/foundation/internal/artifacts"
"namespacelabs.dev/foundation/internal/fnerrors"
"namespacelabs.dev/foundation/std/tasks"
)
func IngestFromFS(ctx context.Context, fsys fs.FS, path string, compressed bool) (Image, error) {
return tarball.Image(func() (io.ReadCloser, error) {
f, err := fsys.Open(path)
if err != nil {
return nil, err
}
fi, err := f.Stat()
if err != nil {
return nil, fnerrors.InternalError("failed to stat intermediate image: %w", err)
}
progress := artifacts.NewProgressReader(f, uint64(fi.Size()))
tasks.Attachments(ctx).SetProgress(progress)
if !compressed {
return progress, nil
}
gr, err := gzip.NewReader(progress)
if err != nil {
return nil, err
}
return andClose{gr, progress}, nil
}, nil)
}
type andClose struct {
actual io.ReadCloser
closer io.Closer
}
func (a andClose) Read(p []byte) (int, error) { return a.actual.Read(p) }
func (a andClose) Close() error {
err := a.actual.Close()
ioerr := a.closer.Close()
if err != nil {
return err
}
return ioerr
}