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.kafka.connect.json;
  
  import org.apache.kafka.common.config.ConfigDef;
  import org.apache.kafka.common.config.ConfigDef.Importance;
  import org.apache.kafka.common.config.ConfigDef.Type;
  import org.apache.kafka.common.config.ConfigDef.Width;
  import org.apache.kafka.connect.storage.ConverterConfig;
  
  import java.util.Locale;
  import java.util.Map;
  
  /**
   * Configuration options for {@link JsonConverter} instances.
   */
  public final class JsonConverterConfig extends ConverterConfig {
  
      public static final String SCHEMAS_ENABLE_CONFIG = "schemas.enable";
      public static final boolean SCHEMAS_ENABLE_DEFAULT = true;
      private static final String SCHEMAS_ENABLE_DOC = "Include schemas within each of the serialized values and keys.";
      private static final String SCHEMAS_ENABLE_DISPLAY = "Enable Schemas";
  
      public static final String SCHEMAS_CACHE_SIZE_CONFIG = "schemas.cache.size";
      public static final int SCHEMAS_CACHE_SIZE_DEFAULT = 1000;
      private static final String SCHEMAS_CACHE_SIZE_DOC = "The maximum number of schemas that can be cached in this converter instance.";
      private static final String SCHEMAS_CACHE_SIZE_DISPLAY = "Schema Cache Size";
  
      public static final String DECIMAL_FORMAT_CONFIG = "decimal.format";
      public static final String DECIMAL_FORMAT_DEFAULT = DecimalFormat.BASE64.name();
      private static final String DECIMAL_FORMAT_DOC = "Controls which format this converter will serialize decimals in."
          + " This value is case insensitive and can be either 'BASE64' (default) or 'NUMERIC'";
      private static final String DECIMAL_FORMAT_DISPLAY = "Decimal Format";
  
      public static final String REPLACE_NULL_WITH_DEFAULT_CONFIG = "replace.null.with.default";
      public static final boolean REPLACE_NULL_WITH_DEFAULT_DEFAULT = true;
      private static final String REPLACE_NULL_WITH_DEFAULT_DOC = "Whether to replace fields that have a default value and that are null to the default value. When set to true, the default value is used, otherwise null is used.";
      private static final String REPLACE_NULL_WITH_DEFAULT_DISPLAY = "Replace null with default";
  
      private static final ConfigDef CONFIG;
  
      static {
          String group = "Schemas";
          int orderInGroup = 0;
          CONFIG = ConverterConfig.newConfigDef();
          CONFIG.define(SCHEMAS_ENABLE_CONFIG, Type.BOOLEAN, SCHEMAS_ENABLE_DEFAULT, Importance.HIGH, SCHEMAS_ENABLE_DOC, group,
                        orderInGroup++, Width.MEDIUM, SCHEMAS_ENABLE_DISPLAY);
          CONFIG.define(SCHEMAS_CACHE_SIZE_CONFIG, Type.INT, SCHEMAS_CACHE_SIZE_DEFAULT, Importance.HIGH, SCHEMAS_CACHE_SIZE_DOC, group,
                        orderInGroup++, Width.MEDIUM, SCHEMAS_CACHE_SIZE_DISPLAY);
  
          group = "Serialization";
          orderInGroup = 0;
          CONFIG.define(
              DECIMAL_FORMAT_CONFIG, Type.STRING, DECIMAL_FORMAT_DEFAULT,
              ConfigDef.CaseInsensitiveValidString.in(
                  DecimalFormat.BASE64.name(),
                  DecimalFormat.NUMERIC.name()),
              Importance.LOW, DECIMAL_FORMAT_DOC, group, orderInGroup++,
              Width.MEDIUM, DECIMAL_FORMAT_DISPLAY);
          CONFIG.define(
                  REPLACE_NULL_WITH_DEFAULT_CONFIG, Type.BOOLEAN, REPLACE_NULL_WITH_DEFAULT_DEFAULT,
                  Importance.LOW, REPLACE_NULL_WITH_DEFAULT_DOC, group, orderInGroup++,
                  Width.MEDIUM, REPLACE_NULL_WITH_DEFAULT_DISPLAY);
      }
  
      public static ConfigDef configDef() {
          return CONFIG;
      }
  
      // cached config values
      private final boolean schemasEnabled;
      private final int schemaCacheSize;
      private final DecimalFormat decimalFormat;
      private final boolean replaceNullWithDefault;
  
      public JsonConverterConfig(Map<String, ?> props) {
          super(CONFIG, props);
          this.schemasEnabled = getBoolean(SCHEMAS_ENABLE_CONFIG);
          this.schemaCacheSize = getInt(SCHEMAS_CACHE_SIZE_CONFIG);
          this.decimalFormat = DecimalFormat.valueOf(getString(DECIMAL_FORMAT_CONFIG).toUpperCase(Locale.ROOT));
          this.replaceNullWithDefault = getBoolean(REPLACE_NULL_WITH_DEFAULT_CONFIG);
      }
  
      /**
       * Return whether schemas are enabled.
       *
       * @return true if enabled, or false otherwise
       */
      public boolean schemasEnabled() {
          return schemasEnabled;
      }
  
      /**
       * Get the cache size.
       *
       * @return the cache size
       */
      public int schemaCacheSize() {
          return schemaCacheSize;
      }
  
      /**
       * Get the serialization format for decimal types.
       *
       * @return the decimal serialization format
       */
      public DecimalFormat decimalFormat() {
          return decimalFormat;
      }
  
      /**
       * Whether to replace null values with the default value when serializing and deserializing fields
       * @return true if we want to use the default value
       */
      public boolean replaceNullWithDefault() {
          return replaceNullWithDefault;
      }
  
  }
  