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1   /*
2    * Licensed to the Apache Software Foundation (ASF) under one or more
3    * contributor license agreements.  See the NOTICE file distributed with
4    * this work for additional information regarding copyright ownership.
5    * The ASF licenses this file to You under the Apache License, Version 2.0
6    * (the "License"); you may not use this file except in compliance with
7    * the License.  You may obtain a copy of the License at
8    *
9    *     http://www.apache.org/licenses/LICENSE-2.0
10   *
11   * Unless required by applicable law or agreed to in writing, software
12   * distributed under the License is distributed on an "AS IS" BASIS,
13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14   * See the License for the specific language governing permissions and
15   * limitations under the License.
16   */
17  
18  package org.apache.shardingsphere.db.protocol.postgresql.packet.handshake;
19  
20  import org.apache.shardingsphere.db.protocol.postgresql.packet.identifier.PostgreSQLIdentifierPacket;
21  import org.apache.shardingsphere.db.protocol.postgresql.packet.identifier.PostgreSQLIdentifierTag;
22  import org.apache.shardingsphere.db.protocol.postgresql.packet.identifier.PostgreSQLMessagePacketType;
23  import org.apache.shardingsphere.db.protocol.postgresql.payload.PostgreSQLPacketPayload;
24  
25  /**
26   * Authentication OK packet for PostgreSQL.
27   */
28  public final class PostgreSQLAuthenticationOKPacket extends PostgreSQLIdentifierPacket {
29      
30      @Override
31      protected void write(final PostgreSQLPacketPayload payload) {
32          payload.writeInt4(0);
33      }
34      
35      @Override
36      public PostgreSQLIdentifierTag getIdentifier() {
37          return PostgreSQLMessagePacketType.AUTHENTICATION_REQUEST;
38      }
39  }