// GetOrCreateTimestampKey returns the timestamp key for the gun. It uses the store to
// lookup an existing timestamp key and the crypto to generate a new one if none is
// found. It attempts to handle the race condition that may occur if 2 servers try to
// create the key at the same time by simply querying the store a second time if it
// receives a conflict when writing.
func GetOrCreateTimestampKey(gun string, store storage.MetaStore, crypto signed.CryptoService, fallBackAlgorithm data.KeyAlgorithm) (*data.TUFKey, error) {
keyAlgorithm, public, err := store.GetTimestampKey(gun)
if err == nil {
return data.NewTUFKey(keyAlgorithm, public, nil), nil
}
if _, ok := err.(*storage.ErrNoKey); ok {
key, err := crypto.Create("timestamp", fallBackAlgorithm)
if err != nil {
return nil, err
}
err = store.SetTimestampKey(gun, key.Algorithm(), key.Public())
if err == nil {
return &key.TUFKey, nil
}
if _, ok := err.(*storage.ErrTimestampKeyExists); ok {
keyAlgorithm, public, err = store.GetTimestampKey(gun)
if err != nil {
return nil, err
}
return data.NewTUFKey(keyAlgorithm, public, nil), nil
}
return nil, err
}
return nil, err
}
// GetOrCreateTimestampKey returns the timestamp key for the gun. It uses the store to
// lookup an existing timestamp key and the crypto to generate a new one if none is
// found. It attempts to handle the race condition that may occur if 2 servers try to
// create the key at the same time by simply querying the store a second time if it
// receives a conflict when writing.
func GetOrCreateTimestampKey(gun string, store storage.MetaStore, crypto signed.CryptoService, fallBackAlgorithm data.KeyAlgorithm) (data.PublicKey, error) {
keyAlgorithm, public, err := store.GetTimestampKey(gun)
if err == nil {
return data.NewPublicKey(keyAlgorithm, public), nil
}
if _, ok := err.(*storage.ErrNoKey); ok {
key, err := crypto.Create("timestamp", fallBackAlgorithm)
if err != nil {
return nil, err
}
logrus.Debug("Creating new timestamp key for ", gun, ". With algo: ", key.Algorithm())
err = store.SetTimestampKey(gun, key.Algorithm(), key.Public())
if err == nil {
return key, nil
}
if _, ok := err.(*storage.ErrTimestampKeyExists); ok {
keyAlgorithm, public, err = store.GetTimestampKey(gun)
if err != nil {
return nil, err
}
return data.NewPublicKey(keyAlgorithm, public), nil
}
return nil, err
}
return nil, err
}
// GetOrCreateTimestampKey returns the timestamp key for the gun. It uses the store to
// lookup an existing timestamp key and the crypto to generate a new one if none is
// found. It attempts to handle the race condition that may occur if 2 servers try to
// create the key at the same time by simply querying the store a second time if it
// receives a conflict when writing.
func GetOrCreateTimestampKey(gun string, store storage.MetaStore, crypto signed.CryptoService) (*data.TUFKey, error) {
cipher, public, err := store.GetTimestampKey(gun)
if err == nil {
return data.NewTUFKey(cipher, public, nil), nil
}
if _, ok := err.(*storage.ErrNoKey); ok {
key, err := crypto.Create("timestamp")
if err != nil {
return nil, err
}
err = store.SetTimestampKey(gun, key.Cipher(), key.Public())
if err == nil {
return &key.TUFKey, nil
}
if _, ok := err.(*storage.ErrTimestampKeyExists); ok {
cipher, public, err = store.GetTimestampKey(gun)
if err != nil {
return nil, err
}
return data.NewTUFKey(cipher, public, nil), nil
}
return nil, err
}
return nil, err
}
