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2025-08-27 19:57:40 +08:00
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/*
* Copyright (c) 2023-2025, Agents-Flex (fuhai999@gmail.com).
* <p>
* Licensed 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
* <p>
* http://www.apache.org/licenses/LICENSE-2.0
* <p>
* 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 com.agentsflex.llm.vllm;
import com.agentsflex.core.document.Document;
import com.agentsflex.core.llm.ChatOptions;
import com.agentsflex.core.llm.embedding.EmbeddingOptions;
import com.agentsflex.core.message.HumanMessage;
import com.agentsflex.core.message.Message;
import com.agentsflex.core.parser.AiMessageParser;
import com.agentsflex.core.parser.impl.DefaultAiMessageParser;
import com.agentsflex.core.prompt.DefaultPromptFormat;
import com.agentsflex.core.prompt.Prompt;
import com.agentsflex.core.prompt.PromptFormat;
import com.agentsflex.core.util.Maps;
import com.agentsflex.core.util.MessageUtil;
import java.util.List;
import java.util.Optional;
public class VLlmLlmUtil {
private static final PromptFormat promptFormat = new DefaultPromptFormat();
public static AiMessageParser getAiMessageParser(boolean isStream) {
return DefaultAiMessageParser.getChatGPTMessageParser(isStream);
}
public static String promptToPayload(Prompt prompt, VLlmLlmConfig config, ChatOptions options, boolean withStream) {
List<Message> messages = prompt.toMessages();
HumanMessage message = MessageUtil.findLastHumanMessage(messages);
return Maps.of("model", Optional.ofNullable(options.getModel()).orElse(config.getModel()))
.set("messages", promptFormat.toMessagesJsonObject(messages))
.setIf(withStream, "stream", withStream)
.setIfNotEmpty("tools", promptFormat.toFunctionsJsonObject(message))
.setIfContainsKey("tools", "tool_choice", MessageUtil.getToolChoice(message))
.setIfNotNull("top_p", options.getTopP())
.setIfNotEmpty("stop", options.getStop())
.setIf(map -> !map.containsKey("tools") && options.getTemperature() > 0, "temperature", options.getTemperature())
.setIf(map -> !map.containsKey("tools") && options.getMaxTokens() != null, "max_tokens", options.getMaxTokens())
.setIfNotEmpty(options.getExtra())
.toJSON();
}
public static String promptToEnabledPayload(Document text, EmbeddingOptions options, VLlmLlmConfig config) {
return Maps.of("model", options.getModelOrDefault(config.getDefaultEmbeddingModel()))
.set("encoding_format", "float")
.set("input", text.getContent())
.toJSON();
}
}