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Merge pull request #3915 from plumbeo/compression-stats

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restic stats: print uncompressed size in mode raw-data
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Michael Eischer 2022-10-21 22:10:29 +02:00 committed by GitHub
commit ee6688a9f6
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2 changed files with 49 additions and 8 deletions
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9
changelog/unreleased/pull-3915 Normal file
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@ -0,0 +1,9 @@
Enhancement: add compression statistics to the restic stats command
When executed in `raw-data` mode on a repository that supports compression, the `restic stats`
command now calculates and displays, for the selected repository or snapshots, the uncompressed
size of the data, the compression progress (percentage of data that has been compressed), the
compression ratio of the compressed data and the total space saving, taking into account both
the compressed and uncompressed data if the repository is only partially compressed.
https://github.com/restic/restic/pull/3915

38
cmd/restic/cmd_stats.go
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@ -7,6 +7,7 @@ import (
"path/filepath"
"github.com/restic/restic/internal/backend"
"github.com/restic/restic/internal/crypto"
"github.com/restic/restic/internal/restic"
"github.com/restic/restic/internal/walker"
@ -128,8 +129,22 @@ func runStats(ctx context.Context, gopts GlobalOptions, args []string) error {
return fmt.Errorf("blob %v not found", blobHandle)
}
stats.TotalSize += uint64(pbs[0].Length)
if repo.Config().Version >= 2 {
stats.TotalUncompressedSize += uint64(crypto.CiphertextLength(int(pbs[0].DataLength())))
if pbs[0].IsCompressed() {
stats.TotalCompressedBlobsSize += uint64(pbs[0].Length)
stats.TotalCompressedBlobsUncompressedSize += uint64(crypto.CiphertextLength(int(pbs[0].DataLength())))
}
}
stats.TotalBlobCount++
}
if stats.TotalCompressedBlobsSize > 0 {
stats.CompressionRatio = float64(stats.TotalCompressedBlobsUncompressedSize) / float64(stats.TotalCompressedBlobsSize)
}
if stats.TotalUncompressedSize > 0 {
stats.CompressionProgress = float64(stats.TotalCompressedBlobsUncompressedSize) / float64(stats.TotalUncompressedSize) * 100
stats.CompressionSpaceSaving = (1 - float64(stats.TotalSize)/float64(stats.TotalUncompressedSize)) * 100
}
}
if gopts.JSON {
@ -141,15 +156,26 @@ func runStats(ctx context.Context, gopts GlobalOptions, args []string) error {
}
Printf("Stats in %s mode:\n", statsOptions.countMode)
Printf("Snapshots processed: %d\n", stats.SnapshotsCount)
Printf(" Snapshots processed: %d\n", stats.SnapshotsCount)
if stats.TotalBlobCount > 0 {
Printf(" Total Blob Count: %d\n", stats.TotalBlobCount)
}
if stats.TotalFileCount > 0 {
Printf(" Total File Count: %d\n", stats.TotalFileCount)
}
if stats.TotalUncompressedSize > 0 {
Printf(" Total Uncompressed Size: %-5s\n", formatBytes(stats.TotalUncompressedSize))
}
Printf(" Total Size: %-5s\n", formatBytes(stats.TotalSize))
if stats.CompressionProgress > 0 {
Printf(" Compression Progress: %.2f%%\n", stats.CompressionProgress)
}
if stats.CompressionRatio > 0 {
Printf(" Compression Ratio: %.2fx\n", stats.CompressionRatio)
}
if stats.CompressionSpaceSaving > 0 {
Printf("Compression Space Saving: %.2f%%\n", stats.CompressionSpaceSaving)
}
return nil
}
@ -276,7 +302,13 @@ func verifyStatsInput(gopts GlobalOptions, args []string) error {
// for a successful and efficient walk.
type statsContainer struct {
TotalSize uint64 `json:"total_size"`
TotalFileCount uint64 `json:"total_file_count"`
TotalUncompressedSize uint64 `json:"total_uncompressed_size,omitempty"`
TotalCompressedBlobsSize uint64 `json:"-"`
TotalCompressedBlobsUncompressedSize uint64 `json:"-"`
CompressionRatio float64 `json:"compression_ratio,omitempty"`
CompressionProgress float64 `json:"compression_progress,omitempty"`
CompressionSpaceSaving float64 `json:"compression_space_saving,omitempty"`
TotalFileCount uint64 `json:"total_file_count,omitempty"`
TotalBlobCount uint64 `json:"total_blob_count,omitempty"`
// holds count of all considered snapshots
SnapshotsCount int `json:"snapshots_count"`