1   /*
2    * Copyright 2018 LINE Corporation
3    *
4    * LINE Corporation licenses this file to you under the Apache License,
5    * version 2.0 (the "License"); you may not use this file except in compliance
6    * with the License. You may obtain a copy of the License at:
7    *
8    *   https://www.apache.org/licenses/LICENSE-2.0
9    *
10   * Unless required by applicable law or agreed to in writing, software
11   * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
12   * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
13   * License for the specific language governing permissions and limitations
14   * under the License.
15   */
16  package com.linecorp.centraldogma.server.internal.admin.auth;
17  
18  import java.time.Instant;
19  import java.util.concurrent.CompletableFuture;
20  
21  import com.linecorp.centraldogma.server.auth.Session;
22  import com.linecorp.centraldogma.server.auth.SessionManager;
23  
24  /**
25   * A {@link SessionManager} which deletes expired sessions while getting them.
26   */
27  public final class ExpiredSessionDeletingSessionManager extends ForwardingSessionManager {
28  
29      public ExpiredSessionDeletingSessionManager(SessionManager delegate) {
30          super(delegate);
31      }
32  
33      @Override
34      public CompletableFuture<Session> get(String sessionId) {
35          return super.get(sessionId).thenApply(session -> {
36              if (session != null) {
37                  if (Instant.now().isBefore(session.expirationTime())) {
38                      return session;
39                  }
40  
41                  // Delete the expired session and return null.
42                  delete(sessionId);
43              }
44              return null;
45          });
46      }
47  }