content: /*
   * Copyright 2021-2024 Aklivity Inc
   *
   * Licensed under the Aklivity Community License (the "License"); you may not use
   * this file except in compliance with the License.  You may obtain a copy of the
   * License at
   *
   *   https://www.aklivity.io/aklivity-community-license/
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
   * WARRANTIES OF ANY KIND, either express or implied.  See the License for the
   * specific language governing permissions and limitations under the License.
   */
  package io.aklivity.zilla.runtime.model.core.internal;
  
  import org.agrona.DirectBuffer;
  
  import io.aklivity.zilla.runtime.engine.EngineContext;
  import io.aklivity.zilla.runtime.engine.model.ConverterHandler;
  import io.aklivity.zilla.runtime.engine.model.function.ValueConsumer;
  import io.aklivity.zilla.runtime.model.core.config.StringModelConfig;
  
  public class StringConverterHandler implements ConverterHandler
  {
      private final CoreModelEventContext event;
      private StringEncoding encoding;
  
      public StringConverterHandler(
          StringModelConfig config,
          EngineContext context)
      {
          this.encoding = StringEncoding.of(config.encoding);
          this.event = new CoreModelEventContext(context);
      }
  
      @Override
      public int convert(
          long traceId,
          long bindingId,
          DirectBuffer data,
          int index,
          int length,
          ValueConsumer next)
      {
          int valLength = -1;
  
          if (encoding.validate(data, index, length))
          {
              next.accept(data, index, length);
              valLength = length;
          }
  
          if (valLength == VALIDATION_FAILURE)
          {
              event.validationFailure(traceId, bindingId, StringModel.NAME);
          }
  
          return valLength;
      }
  }
  