createProgressBar creates a progressBar in pool. Note that if the copier's reportWriter is io.Discard, the progress bar's output will be discarded. Callers may call printCopyInfo() to print a single line instead. NOTE: Every progress bar created within a progress pool must either successfully com
(pool *mpb.Progress, partial bool, info types.BlobInfo, kind string, onComplete string)
| 56 | // by convention, we don't leave progress bars in partial state when fully done |
| 57 | // (even if we copied much less data than anticipated). |
| 58 | func (c *copier) createProgressBar(pool *mpb.Progress, partial bool, info types.BlobInfo, kind string, onComplete string) (*progressBar, error) { |
| 59 | // shortDigestLen is the length of the digest used for blobs. |
| 60 | const shortDigestLen = 12 |
| 61 | |
| 62 | if err := info.Digest.Validate(); err != nil { // digest.Digest.Encoded() panics on failure, so validate explicitly. |
| 63 | return nil, err |
| 64 | } |
| 65 | prefix := fmt.Sprintf("Copying %s %s", kind, info.Digest.Encoded()) |
| 66 | // Truncate the prefix (chopping of some part of the digest) to make all progress bars aligned in a column. |
| 67 | maxPrefixLen := len("Copying blob ") + shortDigestLen |
| 68 | if len(prefix) > maxPrefixLen { |
| 69 | prefix = prefix[:maxPrefixLen] |
| 70 | } |
| 71 | |
| 72 | // onComplete will replace prefix once the bar/spinner has completed |
| 73 | onComplete = prefix + " " + onComplete |
| 74 | |
| 75 | // Use a normal progress bar when we know the size (i.e., size > 0). |
| 76 | // Otherwise, use a spinner to indicate that something's happening. |
| 77 | var bar *mpb.Bar |
| 78 | if info.Size > 0 { |
| 79 | if partial { |
| 80 | bar = pool.AddBar(info.Size, |
| 81 | mpb.BarFillerClearOnComplete(), |
| 82 | mpb.PrependDecorators( |
| 83 | decor.OnComplete(decor.Name(prefix), onComplete), |
| 84 | ), |
| 85 | mpb.AppendDecorators( |
| 86 | decor.Any(customPartialBlobDecorFunc), |
| 87 | ), |
| 88 | ) |
| 89 | } else { |
| 90 | bar = pool.AddBar(info.Size, |
| 91 | mpb.BarFillerClearOnComplete(), |
| 92 | mpb.PrependDecorators( |
| 93 | decor.OnComplete(decor.Name(prefix), onComplete), |
| 94 | ), |
| 95 | mpb.AppendDecorators( |
| 96 | decor.OnComplete(decor.CountersKibiByte("%.1f / %.1f"), ""), |
| 97 | decor.Name(" | "), |
| 98 | decor.OnComplete(decor.EwmaSpeed(decor.SizeB1024(0), "% .1f", 30), ""), |
| 99 | ), |
| 100 | ) |
| 101 | } |
| 102 | } else { |
| 103 | bar = pool.New(0, |
| 104 | mpb.SpinnerStyle(".", "..", "...", "....", "").PositionLeft(), |
| 105 | mpb.BarFillerClearOnComplete(), |
| 106 | mpb.PrependDecorators( |
| 107 | decor.OnComplete(decor.Name(prefix), onComplete), |
| 108 | ), |
| 109 | mpb.AppendDecorators( |
| 110 | decor.OnComplete(decor.EwmaSpeed(decor.SizeB1024(0), "% .1f", 30), ""), |
| 111 | ), |
| 112 | ) |
| 113 | } |
| 114 | return &progressBar{ |
| 115 | Bar: bar, |
no test coverage detected