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cache: Add option to remove old cache dirs

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This commit is contained in:
Alexander Neumann 2017-11-20 22:08:53 +01:00
parent f4bab789b8
commit 6341c7d72c
1 changed files with 23 additions and 1 deletions
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24
cmd/restic/global.go
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@ -6,6 +6,7 @@ import (
"io"
"io/ioutil"
"os"
"path/filepath"
"runtime"
"strings"
"syscall"
@ -23,6 +24,7 @@ import (
"github.com/restic/restic/internal/backend/swift"
"github.com/restic/restic/internal/cache"
"github.com/restic/restic/internal/debug"
"github.com/restic/restic/internal/fs"
"github.com/restic/restic/internal/limiter"
"github.com/restic/restic/internal/options"
"github.com/restic/restic/internal/repository"
@ -45,6 +47,7 @@ type GlobalOptions struct {
CacheDir string
NoCache bool
CACerts []string
CleanupCache bool
LimitUploadKb int
LimitDownloadKb int
@ -81,6 +84,7 @@ func init() {
f.StringVar(&globalOptions.CacheDir, "cache-dir", "", "set the cache directory")
f.BoolVar(&globalOptions.NoCache, "no-cache", false, "do not use a local cache")
f.StringSliceVar(&globalOptions.CACerts, "cacert", nil, "path to load root certificates from (default: use system certificates)")
f.BoolVar(&globalOptions.CleanupCache, "cleanup-cache", false, "auto remove old cache directories")
f.IntVar(&globalOptions.LimitUploadKb, "limit-upload", 0, "limits uploads to a maximum rate in KiB/s. (default: unlimited)")
f.IntVar(&globalOptions.LimitDownloadKb, "limit-download", 0, "limits downloads to a maximum rate in KiB/s. (default: unlimited)")
f.StringSliceVarP(&globalOptions.Options, "option", "o", []string{}, "set extended option (`key=value`, can be specified multiple times)")
@ -362,8 +366,26 @@ func OpenRepository(opts GlobalOptions) (*repository.Repository, error) {
oldCacheDirs, err := cache.Old(c.Base)
if err != nil {
Warnf("unable to find old cache directories: %v", err)
}
// nothing more to do if no old cache dirs could be found
if len(oldCacheDirs) == 0 {
return s, nil
}
// cleanup old cache dirs if instructed to do so
if opts.CleanupCache {
Printf("removing %d old cache dirs from %v\n", len(oldCacheDirs), c.Base)
for _, item := range oldCacheDirs {
dir := filepath.Join(c.Base, item)
err = fs.RemoveAll(dir)
if err != nil {
Warnf("unable to remove %v: %v\n", dir, err)
}
}
} else {
Verbosef("found %d old cache directories in %v remove them with 'restic cache --cleanup'\n",
Verbosef("found %d old cache directories in %v, pass --cleanup-cache to remove them\n",
len(oldCacheDirs), c.Base)
}