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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,104 @@ | ||
| package paths | ||
|
|
||
| import ( | ||
| "context" | ||
| "io" | ||
| "mime" | ||
| "net/http" | ||
| "os" | ||
| "time" | ||
|
|
||
| "github.com/hashicorp/go-multierror" | ||
| "golang.org/x/xerrors" | ||
|
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| "github.com/filecoin-project/lotus/storage/sealer/tarutil" | ||
| ) | ||
|
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| func fetch(ctx context.Context, url, outname string, header http.Header) (rerr error) { | ||
| log.Infof("Fetch %s -> %s", url, outname) | ||
|
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| req, err := http.NewRequest("GET", url, nil) | ||
| if err != nil { | ||
| return xerrors.Errorf("request: %w", err) | ||
| } | ||
| req.Header = header | ||
| req = req.WithContext(ctx) | ||
|
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| resp, err := http.DefaultClient.Do(req) | ||
| if err != nil { | ||
| return xerrors.Errorf("do request: %w", err) | ||
| } | ||
| defer resp.Body.Close() // nolint | ||
|
|
||
| if resp.StatusCode != 200 { | ||
| return xerrors.Errorf("non-200 code: %d", resp.StatusCode) | ||
| } | ||
|
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| start := time.Now() | ||
| var bytes int64 | ||
| defer func() { | ||
| took := time.Now().Sub(start) | ||
| mibps := float64(bytes) / 1024 / 1024 * float64(time.Second) / float64(took) | ||
| log.Infow("Fetch done", "url", url, "out", outname, "took", took.Round(time.Millisecond), "bytes", bytes, "MiB/s", mibps, "err", rerr) | ||
| }() | ||
|
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| mediatype, _, err := mime.ParseMediaType(resp.Header.Get("Content-Type")) | ||
| if err != nil { | ||
| return xerrors.Errorf("parse media type: %w", err) | ||
| } | ||
|
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| if err := os.RemoveAll(outname); err != nil { | ||
| return xerrors.Errorf("removing dest: %w", err) | ||
| } | ||
|
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| switch mediatype { | ||
| case "application/x-tar": | ||
| bytes, err = tarutil.ExtractTar(resp.Body, outname, make([]byte, CopyBuf)) | ||
| return err | ||
| case "application/octet-stream": | ||
| f, err := os.Create(outname) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| bytes, err = io.CopyBuffer(f, resp.Body, make([]byte, CopyBuf)) | ||
| if err != nil { | ||
| f.Close() // nolint | ||
| return err | ||
| } | ||
| return f.Close() | ||
| default: | ||
| return xerrors.Errorf("unknown content type: '%s'", mediatype) | ||
| } | ||
| } | ||
|
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| // FetchWithTemp fetches data into a temp 'fetching' directory, then moves the file to destination | ||
| func FetchWithTemp(ctx context.Context, urls []string, dest string, header http.Header) (string, error) { | ||
| var merr error | ||
| for _, url := range urls { | ||
| tempDest, err := tempFetchDest(dest, true) | ||
| if err != nil { | ||
| return "", err | ||
| } | ||
|
|
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| if err := os.RemoveAll(dest); err != nil { | ||
| return "", xerrors.Errorf("removing dest: %w", err) | ||
| } | ||
|
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| err = fetch(ctx, url, tempDest, header) | ||
| if err != nil { | ||
| merr = multierror.Append(merr, xerrors.Errorf("fetch error %s -> %s: %w", url, tempDest, err)) | ||
| continue | ||
| } | ||
|
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| if err := move(tempDest, dest); err != nil { | ||
| return "", xerrors.Errorf("fetch move error %s -> %s: %w", tempDest, dest, err) | ||
| } | ||
|
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| if merr != nil { | ||
| log.Warnw("acquireFromRemote encountered errors when fetching sector from remote", "errors", merr) | ||
| } | ||
| return url, nil | ||
| } | ||
|
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| return "", xerrors.Errorf("failed to fetch sector file (tried %v): %w", urls, merr) | ||
| } |
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