/*
 * 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.polaris.service.context.catalog;

import jakarta.enterprise.context.RequestScoped;
import jakarta.enterprise.inject.Produces;
import java.util.concurrent.atomic.AtomicReference;
import org.apache.polaris.core.context.RealmContext;

@RequestScoped
public class RealmContextHolder {
  private final AtomicReference<RealmContext> realmContext = new AtomicReference<>();

  @Produces
  @RequestScoped
  public RealmContext get() {
    // Note: if this producer is called before the context is set a CDI exception will occur.
    return realmContext.get();
  }

  public void set(RealmContext rc) {
    if (!realmContext.compareAndSet(null, rc)) {
      throw new IllegalStateException("RealmContext already set");
    }
  }
}
