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Signed-off-by: Tonis Tiigi <tonistiigi@gmail.com>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,155 @@ | ||
| package local | ||
|
|
||
| import ( | ||
| "context" | ||
| "io/ioutil" | ||
| "os" | ||
| "strings" | ||
| "time" | ||
|
|
||
| "github.com/moby/buildkit/cache" | ||
| "github.com/moby/buildkit/exporter" | ||
| "github.com/moby/buildkit/session" | ||
| "github.com/moby/buildkit/session/filesync" | ||
| "github.com/moby/buildkit/snapshot" | ||
| "github.com/moby/buildkit/util/progress" | ||
| "github.com/pkg/errors" | ||
| "github.com/tonistiigi/fsutil" | ||
| fstypes "github.com/tonistiigi/fsutil/types" | ||
| ) | ||
|
|
||
| type Opt struct { | ||
| SessionManager *session.Manager | ||
| } | ||
|
|
||
| type localExporter struct { | ||
| opt Opt | ||
| // session manager | ||
| } | ||
|
|
||
| func New(opt Opt) (exporter.Exporter, error) { | ||
| le := &localExporter{opt: opt} | ||
| return le, nil | ||
| } | ||
|
|
||
| func (e *localExporter) Resolve(ctx context.Context, opt map[string]string) (exporter.ExporterInstance, error) { | ||
| id := session.FromContext(ctx) | ||
| if id == "" { | ||
| return nil, errors.New("could not access local files without session") | ||
| } | ||
|
|
||
| timeoutCtx, cancel := context.WithTimeout(ctx, 5*time.Second) | ||
| defer cancel() | ||
|
|
||
| caller, err := e.opt.SessionManager.Get(timeoutCtx, id) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| li := &localExporterInstance{localExporter: e, caller: caller} | ||
| return li, nil | ||
| } | ||
|
|
||
| type localExporterInstance struct { | ||
| *localExporter | ||
| caller session.Caller | ||
| } | ||
|
|
||
| func (e *localExporterInstance) Name() string { | ||
| return "exporting to client" | ||
| } | ||
|
|
||
| func (e *localExporterInstance) Export(ctx context.Context, inp exporter.Source) (map[string]string, error) { | ||
| var defers []func() | ||
|
|
||
| defer func() { | ||
| for i := len(defers) - 1; i >= 0; i-- { | ||
| defers[i]() | ||
| } | ||
| }() | ||
|
|
||
| getDir := func(ctx context.Context, k string, ref cache.ImmutableRef) (*fsutil.Dir, error) { | ||
| var src string | ||
| var err error | ||
| if ref == nil { | ||
| src, err = ioutil.TempDir("", "buildkit") | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| defers = append(defers, func() { os.RemoveAll(src) }) | ||
| } else { | ||
| mount, err := ref.Mount(ctx, true) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| lm := snapshot.LocalMounter(mount) | ||
|
|
||
| src, err = lm.Mount() | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| defers = append(defers, func() { lm.Unmount() }) | ||
| } | ||
|
|
||
| return &fsutil.Dir{ | ||
| FS: fsutil.NewFS(src, nil), | ||
| Stat: fstypes.Stat{ | ||
| Mode: uint32(os.ModeDir | 0755), | ||
| Path: strings.Replace(k, "/", "_", -1), | ||
| }, | ||
| }, nil | ||
| } | ||
|
|
||
| var fs fsutil.FS | ||
|
|
||
| if len(inp.Refs) > 0 { | ||
| dirs := make([]fsutil.Dir, 0, len(inp.Refs)) | ||
| for k, ref := range inp.Refs { | ||
| d, err := getDir(ctx, k, ref) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| dirs = append(dirs, *d) | ||
| } | ||
| var err error | ||
| fs, err = fsutil.SubDirFS(dirs) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| } else { | ||
| d, err := getDir(ctx, "", inp.Ref) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| fs = d.FS | ||
| } | ||
|
|
||
| w, err := filesync.CopyFileWriter(ctx, e.caller) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| report := oneOffProgress(ctx, "sending tarball") | ||
| if err := fsutil.WriteTar(ctx, fs, w); err != nil { | ||
| w.Close() | ||
| return nil, report(err) | ||
| } | ||
| return nil, report(w.Close()) | ||
| } | ||
|
|
||
| func oneOffProgress(ctx context.Context, id string) func(err error) error { | ||
| pw, _, _ := progress.FromContext(ctx) | ||
| now := time.Now() | ||
| st := progress.Status{ | ||
| Started: &now, | ||
| } | ||
| pw.Write(id, st) | ||
| return func(err error) error { | ||
| // TODO: set error on status | ||
| now := time.Now() | ||
| st.Completed = &now | ||
| pw.Write(id, st) | ||
| pw.Close() | ||
| return err | ||
| } | ||
| } |
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