content: /*
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF licenses this file
   * to you 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
   *
   *   http://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 org.apache.bifromq.basecrdt.store;
  
  import static org.apache.bifromq.basecrdt.core.api.CRDTURI.checkURI;
  import static com.google.protobuf.UnsafeByteOperations.unsafeWrap;
  
  import org.apache.bifromq.basecrdt.proto.Replica;
  import com.google.protobuf.ByteString;
  import java.nio.ByteBuffer;
  import java.util.UUID;
  
  public class ReplicaIdGenerator {
      public static Replica generate(String crdtURI) {
          UUID uuid = UUID.randomUUID();
          return generate(crdtURI, unsafeWrap(ByteBuffer.allocate(2 * Long.BYTES)
              .putLong(uuid.getMostSignificantBits())
              .putLong(uuid.getLeastSignificantBits())
              .array()));
      }
  
      public static Replica generate(String crdtURI, ByteString id) {
          checkURI(crdtURI);
          return Replica.newBuilder()
              .setUri(crdtURI)
              .setId(id)
              .build();
      }
  }
  