orpiske commented on code in PR #13341: URL: https://github.com/apache/camel/pull/13341#discussion_r1506231213
########## components/camel-ai/camel-langchain/src/main/java/org/apache/camel/component/langchain/LangchainProducer.java: ########## @@ -0,0 +1,140 @@ +/* + * 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.component.langchain; + +import java.util.Map; + +import dev.langchain4j.data.message.ChatMessageType; +import dev.langchain4j.model.chat.ChatLanguageModel; +import org.apache.camel.Exchange; +import org.apache.camel.component.langchain.service.Langchain4jChatHandler; +import org.apache.camel.support.DefaultProducer; +import org.apache.camel.util.ObjectHelper; + +import static org.apache.camel.component.langchain.Langchain4jConstants.ENDPOINT_TYPE_CHAT; +import static org.apache.camel.component.langchain.LangchainChatOperations.CHAT_MULTIPLE_MESSAGES; +import static org.apache.camel.component.langchain.LangchainChatOperations.CHAT_SINGLE_MESSAGE; +import static org.apache.camel.component.langchain.LangchainChatOperations.CHAT_SINGLE_MESSAGE_WITH_PROMPT; + +public class LangchainProducer extends DefaultProducer { + + private LangchainEndpoint endpoint; + + private ChatLanguageModel chatLanguageModel; + + private Langchain4jChatHandler langchain4jChatHandler; + + public LangchainProducer(LangchainEndpoint endpoint) { + super(endpoint); + this.endpoint = endpoint; + } + + @Override + public void process(Exchange exchange) throws Exception { + var endpointType = this.endpoint.getType(); + if (ENDPOINT_TYPE_CHAT.equals(endpointType)) { + processChat(exchange); + } + + } + + private void processChat(Exchange exchange) { + var operation = this.endpoint.getChatOperation(); + // make sure operation is not null + ObjectHelper.notNull(operation, "chatOperation"); + + // Processing one single message + + if (CHAT_SINGLE_MESSAGE.equals(operation)) { + + processSingleMessage(exchange); + } else if (CHAT_SINGLE_MESSAGE_WITH_PROMPT.equals(operation)) { + processSingleMessageWithPrompt(exchange); + } else if (CHAT_MULTIPLE_MESSAGES.equals(operation)) { + + processMultipleMessages(exchange); + } + + } + + private void processMultipleMessages(Exchange exchange) { + //TODO + } + + private void processSingleMessageWithPrompt(Exchange exchange) { + ChatMessageType chatMessageType = this.endpoint.getChatMessageType(); + String promptTemplate = exchange.getIn().getHeader(Langchain4jConstants.PROMPT_TEMPLATE, String.class); + ObjectHelper.notNull(promptTemplate, "Prompt variables"); Review Comment: We should be using `NoSuchHeaderException` here. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: commits-unsubscr...@camel.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org
