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.camel.quarkus.component.langchain.embeddings.it;
  
  import dev.langchain4j.data.embedding.Embedding;
  import dev.langchain4j.model.embedding.EmbeddingModel;
  import dev.langchain4j.model.embedding.onnx.allminilml6v2.AllMiniLmL6V2EmbeddingModel;
  import io.quarkus.vertx.http.runtime.devmode.Json;
  import jakarta.enterprise.context.ApplicationScoped;
  import jakarta.inject.Inject;
  import jakarta.ws.rs.Consumes;
  import jakarta.ws.rs.POST;
  import jakarta.ws.rs.Path;
  import jakarta.ws.rs.Produces;
  import jakarta.ws.rs.core.MediaType;
  import jakarta.ws.rs.core.Response;
  import org.apache.camel.Exchange;
  import org.apache.camel.Message;
  import org.apache.camel.ProducerTemplate;
  import org.apache.camel.component.langchain4j.embeddings.LangChain4jEmbeddings;
  import org.apache.camel.support.LRUCacheFactory;
  
  @Path("/langchain4j-embeddings")
  @ApplicationScoped
  public class Langchain4jEmbeddingsResource {
      @Inject
      ProducerTemplate producerTemplate;
  
      @jakarta.enterprise.inject.Produces
      EmbeddingModel embeddingModel() {
          return new AllMiniLmL6V2EmbeddingModel();
      }
  
      @Path("/create")
      @POST
      @Consumes(MediaType.TEXT_PLAIN)
      @Produces(MediaType.APPLICATION_JSON)
      public Response createEmbedding(String text) throws Exception {
          try {
              Exchange result = producerTemplate.request("direct:start", e -> e.getMessage().setBody(text));
              Message message = result.getMessage();
  
              Embedding embedding = message.getHeader(LangChain4jEmbeddings.Headers.VECTOR, Embedding.class);
              Integer inputTokenLength = message.getHeader(LangChain4jEmbeddings.Headers.INPUT_TOKEN_COUNT, Integer.class);
  
              return Response.ok()
                      .entity(Json.object()
                              .put("vectorLength", embedding.vector().length)
                              .put("inputTokenLength", inputTokenLength)
                              .build())
                      .build();
          } finally {
              LRUCacheFactory.setLRUCacheFactory(null);
          }
      }
  }
  