content: /*
   * Copyright (C) 2020 ActiveJ LLC.
   *
   * 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
   *
   * 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 io.activej.http.session;
  
  import io.activej.common.annotation.ComponentInterface;
  import io.activej.promise.Promise;
  import org.jetbrains.annotations.Nullable;
  
  import java.time.Duration;
  
  /**
   * Basic session storage for the {@link SessionServlet}.
   */
  @ComponentInterface
  public interface ISessionStore<T> {
  	Promise<Void> save(String sessionId, T sessionObject);
  
  	Promise<@Nullable T> get(String sessionId);
  
  	Promise<Void> remove(String sessionId);
  
  	default @Nullable Duration getSessionLifetimeHint() {
  		return null;
  	}
  }
  