mirror of
https://github.com/gitpod-io/gitpod.git
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82 lines
2.2 KiB
Go
82 lines
2.2 KiB
Go
// Copyright (c) 2020 Gitpod GmbH. All rights reserved.
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// Licensed under the GNU Affero General Public License (AGPL).
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// See License-AGPL.txt in the project root for license information.
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package content
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import (
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"context"
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"io"
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"os"
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"github.com/containers/storage/pkg/archive"
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"github.com/containers/storage/pkg/idtools"
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"github.com/opentracing/opentracing-go"
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"golang.org/x/xerrors"
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"github.com/gitpod-io/gitpod/common-go/log"
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"github.com/gitpod-io/gitpod/common-go/tracing"
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carchive "github.com/gitpod-io/gitpod/content-service/pkg/archive"
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)
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// BuildTarbal creates an OCI compatible tar file dst from the folder src, expecting the overlay whiteout format
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func BuildTarbal(ctx context.Context, src string, dst string, fullWorkspaceBackup bool, opts ...carchive.TarOption) (err error) {
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var cfg carchive.TarConfig
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for _, opt := range opts {
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opt(&cfg)
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}
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//nolint:staticcheck,ineffassign
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span, ctx := opentracing.StartSpanFromContext(ctx, "buildTarbal")
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span.LogKV("src", src, "dst", dst)
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defer tracing.FinishSpan(span, &err)
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// ensure the src actually exists before trying to tar it
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if _, err := os.Stat(src); err != nil {
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return xerrors.Errorf("Unable to tar files: %v", err.Error())
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}
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if fullWorkspaceBackup {
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log.Warn("Full workspace backup is disabled.")
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}
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uidMaps := make([]idtools.IDMap, len(cfg.UIDMaps))
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for i, m := range cfg.UIDMaps {
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uidMaps[i] = idtools.IDMap{
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ContainerID: m.ContainerID,
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HostID: m.HostID,
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Size: m.Size,
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}
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}
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gidMaps := make([]idtools.IDMap, len(cfg.GIDMaps))
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for i, m := range cfg.GIDMaps {
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gidMaps[i] = idtools.IDMap{
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ContainerID: m.ContainerID,
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HostID: m.HostID,
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Size: m.Size,
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}
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}
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tarReader, err := archive.TarWithOptions(src, &archive.TarOptions{
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UIDMaps: uidMaps,
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GIDMaps: gidMaps,
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Compression: archive.Uncompressed,
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})
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if err != nil {
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return
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}
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defer tarReader.Close()
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tarFile, err := os.OpenFile(dst, os.O_CREATE|os.O_WRONLY, 0755)
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if err != nil {
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return xerrors.Errorf("Unable to create tar file: %v", err.Error())
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}
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_, err = io.Copy(tarFile, tarReader)
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if err != nil {
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return xerrors.Errorf("Unable create tar file: %v", err.Error())
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}
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return
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}
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