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 com.fasterxml.jackson.databind.JsonNode;
  import com.fasterxml.jackson.databind.node.JsonNodeFactory;
  import com.fasterxml.jackson.databind.node.ObjectNode;
  
  public class JsonSchema {
  
      static final String ENVELOPE_SCHEMA_FIELD_NAME = "schema";
      static final String ENVELOPE_PAYLOAD_FIELD_NAME = "payload";
      static final String SCHEMA_TYPE_FIELD_NAME = "type";
      static final String SCHEMA_OPTIONAL_FIELD_NAME = "optional";
      static final String SCHEMA_NAME_FIELD_NAME = "name";
      static final String SCHEMA_VERSION_FIELD_NAME = "version";
      static final String SCHEMA_DOC_FIELD_NAME = "doc";
      static final String SCHEMA_PARAMETERS_FIELD_NAME = "parameters";
      static final String SCHEMA_DEFAULT_FIELD_NAME = "default";
      static final String ARRAY_ITEMS_FIELD_NAME = "items";
      static final String MAP_KEY_FIELD_NAME = "keys";
      static final String MAP_VALUE_FIELD_NAME = "values";
      static final String STRUCT_FIELDS_FIELD_NAME = "fields";
      static final String STRUCT_FIELD_NAME_FIELD_NAME = "field";
      static final String BOOLEAN_TYPE_NAME = "boolean";
      static final ObjectNode BOOLEAN_SCHEMA = JsonNodeFactory.instance.objectNode().put(SCHEMA_TYPE_FIELD_NAME, BOOLEAN_TYPE_NAME);
      static final String INT8_TYPE_NAME = "int8";
      static final ObjectNode INT8_SCHEMA = JsonNodeFactory.instance.objectNode().put(SCHEMA_TYPE_FIELD_NAME, INT8_TYPE_NAME);
      static final String INT16_TYPE_NAME = "int16";
      static final ObjectNode INT16_SCHEMA = JsonNodeFactory.instance.objectNode().put(SCHEMA_TYPE_FIELD_NAME, INT16_TYPE_NAME);
      static final String INT32_TYPE_NAME = "int32";
      static final ObjectNode INT32_SCHEMA = JsonNodeFactory.instance.objectNode().put(SCHEMA_TYPE_FIELD_NAME, INT32_TYPE_NAME);
      static final String INT64_TYPE_NAME = "int64";
      static final ObjectNode INT64_SCHEMA = JsonNodeFactory.instance.objectNode().put(SCHEMA_TYPE_FIELD_NAME, INT64_TYPE_NAME);
      static final String FLOAT_TYPE_NAME = "float";
      static final ObjectNode FLOAT_SCHEMA = JsonNodeFactory.instance.objectNode().put(SCHEMA_TYPE_FIELD_NAME, FLOAT_TYPE_NAME);
      static final String DOUBLE_TYPE_NAME = "double";
      static final ObjectNode DOUBLE_SCHEMA = JsonNodeFactory.instance.objectNode().put(SCHEMA_TYPE_FIELD_NAME, DOUBLE_TYPE_NAME);
      static final String BYTES_TYPE_NAME = "bytes";
      static final ObjectNode BYTES_SCHEMA = JsonNodeFactory.instance.objectNode().put(SCHEMA_TYPE_FIELD_NAME, BYTES_TYPE_NAME);
      static final String STRING_TYPE_NAME = "string";
      static final ObjectNode STRING_SCHEMA = JsonNodeFactory.instance.objectNode().put(SCHEMA_TYPE_FIELD_NAME, STRING_TYPE_NAME);
      static final String ARRAY_TYPE_NAME = "array";
      static final String MAP_TYPE_NAME = "map";
      static final String STRUCT_TYPE_NAME = "struct";
  
      public static ObjectNode envelope(JsonNode schema, JsonNode payload) {
          ObjectNode result = JsonNodeFactory.instance.objectNode();
          result.set(ENVELOPE_SCHEMA_FIELD_NAME, schema);
          result.set(ENVELOPE_PAYLOAD_FIELD_NAME, payload);
          return result;
      }
  
      static class Envelope {
          public JsonNode schema;
          public JsonNode payload;
  
          public Envelope(JsonNode schema, JsonNode payload) {
              this.schema = schema;
              this.payload = payload;
          }
  
          public ObjectNode toJsonNode() {
              return envelope(schema, payload);
          }
      }
  }
  