/
filestore.go
72 lines (64 loc) · 1.75 KB
/
filestore.go
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package store
import (
"fmt"
"io/ioutil"
"os"
"path"
"path/filepath"
)
// NewFilesystemStore creates a new store in a directory tree
func NewFilesystemStore(baseDir, metaSubDir, metaExtension, targetsSubDir string) (*FilesystemStore, error) {
metaDir := path.Join(baseDir, metaSubDir)
targetsDir := path.Join(baseDir, targetsSubDir)
// Make sure we can create the necessary dirs and they are writable
err := os.MkdirAll(metaDir, 0700)
if err != nil {
return nil, err
}
err = os.MkdirAll(targetsDir, 0700)
if err != nil {
return nil, err
}
return &FilesystemStore{
baseDir: baseDir,
metaDir: metaDir,
metaExtension: metaExtension,
targetsDir: targetsDir,
}, nil
}
// FilesystemStore is a store in a locally accessible directory
type FilesystemStore struct {
baseDir string
metaDir string
metaExtension string
targetsDir string
}
// GetMeta returns the meta for the given name (a role)
func (f *FilesystemStore) GetMeta(name string, size int64) ([]byte, error) {
fileName := fmt.Sprintf("%s.%s", name, f.metaExtension)
path := filepath.Join(f.metaDir, fileName)
meta, err := ioutil.ReadFile(path)
if err != nil {
return nil, err
}
return meta, nil
}
// SetMultiMeta sets the metadata for multiple roles in one operation
func (f *FilesystemStore) SetMultiMeta(metas map[string][]byte) error {
for role, blob := range metas {
err := f.SetMeta(role, blob)
if err != nil {
return err
}
}
return nil
}
// SetMeta sets the meta for a single role
func (f *FilesystemStore) SetMeta(name string, meta []byte) error {
fileName := fmt.Sprintf("%s.%s", name, f.metaExtension)
path := filepath.Join(f.metaDir, fileName)
if err := ioutil.WriteFile(path, meta, 0600); err != nil {
return err
}
return nil
}