/
utils.go
118 lines (113 loc) · 4.64 KB
/
utils.go
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package storage
import (
"fmt"
"github.com/apex/log"
"github.com/klauspost/compress/zstd"
"github.com/mholt/archiver/v4"
"sort"
"strings"
"time"
)
func GetBackupsToDelete(backups []Backup, keep int) []Backup {
if len(backups) > keep {
sort.SliceStable(backups, func(i, j int) bool {
return backups[i].UploadDate.After(backups[j].UploadDate)
})
// KeepRemoteBackups should respect incremental backups and don't delete required backups
// fix https://github.com/AlexAkulov/clickhouse-backup/issues/111
// fix https://github.com/AlexAkulov/clickhouse-backup/issues/385
deletedBackups := make([]Backup, len(backups)-keep)
copied := copy(deletedBackups, backups[keep:])
if copied != len(backups)-keep {
log.Warnf("copied wrong items from backup list expected=%d, actual=%d", len(backups)-keep, copied)
}
for _, b := range backups {
if b.RequiredBackup != "" {
for i, deletedBackup := range deletedBackups {
if b.RequiredBackup == deletedBackup.BackupName {
deletedBackups = append(deletedBackups[:i], deletedBackups[i+1:]...)
break
}
}
}
}
// remove from old backup list backup with UploadDate `0001-01-01 00:00:00`, to avoid race condition for multiple shards copy
// fix https://github.com/AlexAkulov/clickhouse-backup/issues/409
i := 0
for _, b := range deletedBackups {
if b.UploadDate != time.Date(1, time.January, 1, 0, 0, 0, 0, time.UTC) {
deletedBackups[i] = b
i++
}
}
deletedBackups = deletedBackups[:i]
return deletedBackups
}
return []Backup{}
}
func getArchiveWriter(format string, level int) (*archiver.CompressedArchive, error) {
switch format {
case "tar":
return &archiver.CompressedArchive{Archival: archiver.Tar{}}, nil
case "lz4":
return &archiver.CompressedArchive{Compression: archiver.Lz4{CompressionLevel: level}, Archival: archiver.Tar{}}, nil
case "bzip2", "bz2":
return &archiver.CompressedArchive{Compression: archiver.Bz2{CompressionLevel: level}, Archival: archiver.Tar{}}, nil
case "gzip", "gz":
return &archiver.CompressedArchive{Compression: archiver.Gz{CompressionLevel: level, Multithreaded: true}, Archival: archiver.Tar{}}, nil
case "sz":
return &archiver.CompressedArchive{Compression: archiver.Sz{}, Archival: archiver.Tar{}}, nil
case "xz":
return &archiver.CompressedArchive{Compression: archiver.Xz{}, Archival: archiver.Tar{}}, nil
case "br", "brotli":
return &archiver.CompressedArchive{Compression: archiver.Brotli{Quality: level}, Archival: archiver.Tar{}}, nil
case "zstd":
return &archiver.CompressedArchive{Compression: archiver.Zstd{EncoderOptions: []zstd.EOption{zstd.WithEncoderLevel(zstd.EncoderLevelFromZstd(level))}}, Archival: archiver.Tar{}}, nil
}
return nil, fmt.Errorf("wrong compression_format: %s, supported: 'tar', 'lz4', 'bzip2', 'bz2', 'gzip', 'gz', 'sz', 'xz', 'br', 'brotli', 'zstd'", format)
}
func getArchiveReader(format string) (*archiver.CompressedArchive, error) {
switch format {
case "tar":
return &archiver.CompressedArchive{Archival: archiver.Tar{}}, nil
case "lz4":
return &archiver.CompressedArchive{Compression: archiver.Lz4{}, Archival: archiver.Tar{}}, nil
case "bzip2", "bz2":
return &archiver.CompressedArchive{Compression: archiver.Bz2{}, Archival: archiver.Tar{}}, nil
case "gzip", "gz":
return &archiver.CompressedArchive{Compression: archiver.Gz{Multithreaded: true}, Archival: archiver.Tar{}}, nil
case "sz":
return &archiver.CompressedArchive{Compression: archiver.Sz{}, Archival: archiver.Tar{}}, nil
case "xz":
return &archiver.CompressedArchive{Compression: archiver.Xz{}, Archival: archiver.Tar{}}, nil
case "br", "brotli":
return &archiver.CompressedArchive{Compression: archiver.Brotli{}, Archival: archiver.Tar{}}, nil
case "zstd":
return &archiver.CompressedArchive{Compression: archiver.Zstd{}, Archival: archiver.Tar{}}, nil
}
return nil, fmt.Errorf("wrong compression_format: %s, supported: 'tar', 'lz4', 'bzip2', 'bz2', 'gzip', 'gz', 'sz', 'xz', 'br', 'brotli', 'zstd'", format)
}
func checkArchiveExtension(ext, format string) bool {
if (format == "gz" || format == "gzip") && ext != ".gz" && ext != ".gzip" {
return false
}
if (format == "bz2" || format == "bzip2") && ext != ".bz2" && ext != ".bzip2" {
return false
}
if (format == "br" || format == "brotli") && ext != ".br" && ext != ".brotli" {
return false
}
if strings.HasSuffix(ext, format) {
return true
}
if (format == "gz" || format == "gzip") && (ext == ".gz" || ext == ".gzip") {
return true
}
if (format == "bz2" || format == "bzip2") && (ext == ".bz2" || ext == ".bzip2") {
return true
}
if (format == "br" || format == "brotli") && (ext == ".br" || ext == ".brotli") {
return true
}
return false
}