code: /*
   * SPDX-License-Identifier: Apache-2.0
   * Copyright 2018-2021 The Feast Authors
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *     https://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  package feast.serving.registry;
  
  import com.google.protobuf.InvalidProtocolBufferException;
  import feast.proto.core.RegistryProto;
  import java.io.IOException;
  import java.nio.file.Files;
  import java.nio.file.Paths;
  import java.util.Optional;
  
  public class LocalRegistryFile implements RegistryFile {
    private final RegistryProto.Registry cachedRegistry;
  
    public LocalRegistryFile(String path) {
      try {
        cachedRegistry = RegistryProto.Registry.parseFrom(Files.readAllBytes(Paths.get(path)));
      } catch (InvalidProtocolBufferException e) {
        throw new RuntimeException(
            String.format(
                "Couldn't read local registry: %s. Protobuf is invalid: %s", path, e.getMessage()));
      } catch (IOException e) {
        throw new RuntimeException(
            String.format("Couldn't read local registry file: %s. Error: %s", path, e.getMessage()));
      }
    }
  
    @Override
    public RegistryProto.Registry getContent() {
      return this.cachedRegistry;
    }
  
    @Override
    public Optional<RegistryProto.Registry> getContentIfModified() {
      return Optional.empty();
    }
  }
  