content: /*
   * 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.config;
  
  import java.io.IOException;
  import java.net.URL;
  import java.nio.file.Files;
  import java.nio.file.Path;
  import java.util.ArrayList;
  import java.util.Collections;
  import java.util.List;
  import java.util.function.Predicate;
  
  import com.google.common.collect.ImmutableList;
  import org.junit.Before;
  import org.junit.Test;
  
  import static org.apache.cassandra.config.CassandraRelevantProperties.ALLOW_DUPLICATE_CONFIG_KEYS;
  import static org.apache.cassandra.config.CassandraRelevantProperties.ALLOW_NEW_OLD_CONFIG_KEYS;
  import static org.junit.Assert.assertFalse;
  import static org.junit.Assert.assertTrue;
  import static org.junit.Assert.fail;
  
  
  public class FailStartupDuplicateParamsTest
  {
      private static final List<String> baseConfig = ImmutableList.of(
          "cluster_name: Test Cluster",
          "commitlog_sync: periodic",
          "commitlog_sync_period: 10s",
          "commitlog_directory: build/test/cassandra/commitlog",
          "hints_directory: build/test/cassandra/hints",
          "partitioner: org.apache.cassandra.dht.ByteOrderedPartitioner",
          "saved_caches_directory: build/test/cassandra/saved_caches",
          "data_file_directories:",
          "   - build/test/cassandra/data",
          "seed_provider:" ,
          "   - class_name: org.apache.cassandra.locator.SimpleSeedProvider",
          "parameters:",
          "   - seeds: \"127.0.0.1:7012\"",
          "endpoint_snitch: org.apache.cassandra.locator.SimpleSnitch");
  
      @Before
      public void before()
      {
          ALLOW_DUPLICATE_CONFIG_KEYS.setBoolean(true);
          ALLOW_NEW_OLD_CONFIG_KEYS.setBoolean(false);
      }
  
      @Test
      public void testDuplicateParamThrows() throws IOException
      {
          ALLOW_DUPLICATE_CONFIG_KEYS.setBoolean(false);
          testYaml("found duplicate key endpoint_snitch", true,
                   "endpoint_snitch: org.apache.cassandra.locator.RackInferringSnitch");
      }
  
      @Test
      public void testReplacementDupesOldFirst() throws IOException
      {
          testYaml("[enable_user_defined_functions -> user_defined_functions_enabled]", true,
                   "enable_user_defined_functions: true",
                   "user_defined_functions_enabled: false");
  
          testYaml("[enable_user_defined_functions -> user_defined_functions_enabled]", true,
                   "enable_user_defined_functions: true",
                   "user_defined_functions_enabled: true");
      }
  
      @Test
      public void testReplacementDupesNewFirst() throws IOException
      {
          testYaml("[enable_user_defined_functions -> user_defined_functions_enabled]", true,
                   "user_defined_functions_enabled: false",
                   "enable_user_defined_functions: true");
  
      }
  
      @Test
      public void testReplacementDupesMultiReplace() throws IOException
      {
          /*
          @Replaces(oldName = "internode_socket_send_buffer_size_in_bytes", converter = Converters.BYTES_DATASTORAGE, deprecated = true)
          @Replaces(oldName = "internode_send_buff_size_in_bytes", converter = Converters.BYTES_DATASTORAGE, deprecated = true)
          public DataStorageSpec internode_socket_send_buffer_size = new DataStorageSpec("0B");
          */
          Predicate<String> predicate = (s) -> s.contains("[internode_send_buff_size_in_bytes -> internode_socket_send_buffer_size]") &&
                                               s.contains("[internode_socket_send_buffer_size_in_bytes -> internode_socket_send_buffer_size]");
          String message = " does not contain both [internode_send_buff_size_in_bytes] and [internode_socket_send_buffer_size_in_bytes]";
  
          testYaml(predicate, true,
                   message,
                   "internode_send_buff_size_in_bytes: 3",
                   "internode_socket_send_buffer_size_in_bytes: 2",
                   "internode_socket_send_buffer_size: 5B");
  
          // and new first:
          testYaml(predicate, true,
                   message,
                   "internode_socket_send_buffer_size: 5B",
                   "internode_socket_send_buffer_size_in_bytes: 2",
                   "internode_send_buff_size_in_bytes: 3");
      }
  
      private static void testYaml(String expected, boolean expectFailure, String ... toAdd) throws IOException
      {
          testYaml((s) -> s.contains(expected), expectFailure, "does not contain [" + expected + ']', toAdd);
      }
  
      private static void testYaml(Predicate<String> exceptionMsgPredicate, boolean expectFailure, String message, String ... toAdd) throws IOException
      {
          Path p = Files.createTempFile("config_dupes",".yaml");
          try
          {
              List<String> lines = new ArrayList<>(baseConfig);
              Collections.addAll(lines, toAdd);
              Files.write(p, lines);
              loadConfig(p.toUri().toURL(), message, exceptionMsgPredicate, expectFailure);
          }
          finally
          {
              Files.delete(p);
          }
      }
  
      private static void loadConfig(URL config, String message, Predicate<String> exceptionMsgPredicate, boolean expectFailure)
      {
          try
          {
              new YamlConfigurationLoader().loadConfig(config);
          }
          catch (Exception e)
          {
              assertTrue(expectFailure);
              e.printStackTrace(System.out);
              Throwable t = e;
              do
              {
                  if (exceptionMsgPredicate.test(t.getMessage()))
                      return;
                  t = t.getCause();
              } while (t != null);
  
              fail("Message\n["+e.getMessage()+ "]\n"+message);
          }
          assertFalse(expectFailure);
      }
  }
  