// Open opens the named kv DB file for reading/writing. It
// creates the file if it does not exist yet.
func Open(dbFile string, opts *kv.Options) (*kv.DB, error) {
createOpen := kv.Open
verb := "opening"
if _, err := os.Stat(dbFile); os.IsNotExist(err) {
createOpen = kv.Create
verb = "creating"
}
if opts == nil {
opts = &kv.Options{}
}
if opts.Locker == nil {
opts.Locker = func(dbFile string) (io.Closer, error) {
lkfile := dbFile + ".lock"
cl, err := lock.Lock(lkfile)
if err != nil {
return nil, fmt.Errorf("failed to acquire lock on %s: %v", lkfile, err)
}
return cl, nil
}
}
if v, _ := strconv.ParseBool(os.Getenv("CAMLI_KV_VERIFY")); v {
opts.VerifyDbBeforeOpen = true
opts.VerifyDbAfterOpen = true
opts.VerifyDbBeforeClose = true
opts.VerifyDbAfterClose = true
}
db, err := createOpen(dbFile, opts)
if err != nil {
return nil, fmt.Errorf("error %s %s: %v", verb, dbFile, err)
}
return db, nil
}
// Open opens the named kv DB file for reading/writing. It
// creates the file if it does not exist yet.
func Open(filePath string, opts *kv.Options) (*kv.DB, error) {
// TODO(mpl): use it in index pkg and such
createOpen := kv.Open
if _, err := os.Stat(filePath); os.IsNotExist(err) {
createOpen = kv.Create
}
if opts == nil {
opts = &kv.Options{}
}
if opts.Locker == nil {
opts.Locker = func(fullPath string) (io.Closer, error) {
return lock.Lock(filePath + ".lock")
}
}
return createOpen(filePath, opts)
}