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   * 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.cassandra.transport;
  
  import org.junit.Before;
  import org.junit.BeforeClass;
  import org.junit.Test;
  
  import com.datastax.driver.core.Authenticator;
  import com.datastax.driver.core.EndPoint;
  import com.datastax.driver.core.PlainTextAuthProvider;
  import org.apache.cassandra.Util;
  import org.apache.cassandra.config.DatabaseDescriptor;
  import org.apache.cassandra.net.FrameEncoder;
  import org.apache.cassandra.transport.messages.AuthResponse;
  import org.apache.cassandra.transport.messages.QueryMessage;
  import org.assertj.core.api.Assertions;
  
  public class AuthMessageSizeLimitTest extends NativeProtocolLimitsTestBase
  {
      private static final int TOO_BIG_MULTI_FRAME_AUTH_MESSAGE_SIZE = 2 * FrameEncoder.Payload.MAX_SIZE;
  
      // set MAX_CQL_MESSAGE_SIZE bigger than TOO_BIG_MULTI_FRAME_AUTH_MESSAGE_SIZE to ensure what the auth message size check is more restrictive
      private static final int MAX_CQL_MESSAGE_SIZE = TOO_BIG_MULTI_FRAME_AUTH_MESSAGE_SIZE * 2;
  
      @BeforeClass
      public static void setUp()
      {
          DatabaseDescriptor.setNativeTransportReceiveQueueCapacityInBytes(1);
          DatabaseDescriptor.setNativeTransportMaxRequestDataInFlightPerIpInBytes(MAX_CQL_MESSAGE_SIZE);
          DatabaseDescriptor.setNativeTransportConcurrentRequestDataInFlightInBytes(MAX_CQL_MESSAGE_SIZE);
          DatabaseDescriptor.setNativeTransportMaxMessageSizeInBytes(MAX_CQL_MESSAGE_SIZE);
          requireNetwork();
          requireAuthentication();
      }
  
      @Before
      public void setLimits()
      {
          ClientResourceLimits.setGlobalLimit(MAX_CQL_MESSAGE_SIZE);
          ClientResourceLimits.setEndpointLimit(MAX_CQL_MESSAGE_SIZE);
      }
  
      @Test
      public void sendSmallAuthMessage()
      {
          doTest((client) ->
                 {
                     AuthResponse authResponse = createAuthMessage("cassandra", "cassandra");
                     client.execute(authResponse);
                     createTable(client);
  
                     int valueLessThanMessageMaxSize = MAX_CQL_MESSAGE_SIZE - 500;
                     QueryMessage queryMessage = queryMessage(valueLessThanMessageMaxSize);
                     client.execute(queryMessage);
                 }
          );
      }
  
      @Test
      public void sendTooBigAuthMultiFrameMessage()
      {
          doTest((client) ->
                 {
                     AuthResponse authResponse = createAuthMessage("cassandra", createIncorrectLongPassword(TOO_BIG_MULTI_FRAME_AUTH_MESSAGE_SIZE));
                     Assertions.assertThatThrownBy(() -> client.execute(authResponse))
                               .hasCauseInstanceOf(ProtocolException.class)
                               .hasMessageContaining(CQLMessageHandler.MULTI_FRAME_AUTH_ERROR_MESSAGE_PREFIX);
                     Util.spinAssertEquals(false, () -> client.connection.channel().isOpen(), 10);
                 }
          );
      }
  
      private static String createIncorrectLongPassword(int length)
      {
          StringBuilder password = new StringBuilder(length);
          for (int i = 0; i < length; i++)
              password.append('a');
          return password.toString();
      }
  
      private AuthResponse createAuthMessage(String username, String password)
      {
          PlainTextAuthProvider authProvider = new PlainTextAuthProvider(username, password);
          Authenticator authenticator = authProvider.newAuthenticator((EndPoint) null, null);
          return new AuthResponse(authenticator.initialResponse());
      }
  }
  