使用Apache Camel和LangChain4j为LLMs提供動力

import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.HashMap;

import org.apache.camel.BindToRegistry;
import org.apache.camel.Exchange;
import org.apache.camel.Processor;
import org.apache.camel.builder.RouteBuilder;

import dev.langchain4j.data.message.ChatMessage;
import dev.langchain4j.data.message.SystemMessage;
import dev.langchain4j.data.message.UserMessage;

public class Bindings extends RouteBuilder{

    @Override
    public void configure() throws Exception {
        // 路由在yaml文件中加載。
    }


    @BindToRegistry(lazy=true)
    public static Processor createChatMessage(){

        return new Processor() {
            public void process(Exchange exchange) throws Exception{

                String payload = exchange.getMessage().getBody(String.class);
                List messages = new ArrayList<>();

                String systemMessage = """
                    You are an intelligent store assistant. Users will ask you questions about store product. 
                    Your task is to provide accurate and concise answers.

                    In the store have shirts, dresses, pants, shoes with no specific category

                    %s

                    If you are unable to access the tools to answer the user's query, 
                    Tell the user that the requested information is not available at this time and that they can try again later.
                        
                    """;

                String tools = """
                        You have access to a collection of tools
                        You can use multiple tools at the same time
                        Complete your answer using data obtained from the tools
                        """;

                messages.add(new SystemMessage(systemMessage.formatted(tools)));


                messages.add(new UserMessage(payload));

                exchange.getIn().setBody(messages);
            }
        };
    }
}

Select  name, description, category, size, color, price, stock from products where Lower(category)= Lower (:#category) and Lower(color) = Lower(:#color) 

./mvnw quarkus:add-extension -Dextensions="io.quarkus:quarkus-jdbc-postgresql"

#為 Postgresql 配置開發服務
quarkus.datasource.db-kind=postgresql
quarkus.datasource.devservices.port=5432
quarkus.datasource.devservices.init-script-path=db/schema-init.sql
quarkus.datasource.devservices.db-name=store

DROP TABLE IF EXISTS products;

CREATE TABLE IF NOT EXISTS products (
    id SERIAL NOT NULL,
    name VARCHAR(100) NOT NULL,
    description varchar(150),
    category VARCHAR(50),
    size VARCHAR(20),
    color VARCHAR(20),
    price DECIMAL(10,2) NOT NULL,
    stock INT NOT NULL,
    CONSTRAINT products_pk PRIMARY KEY (id)
);

    INSERT INTO products (name, description, category, size, color, price, stock)
VALUES
    ('Blue shirt', 'Cotton shirt, short-sleeved', 'Shirts', 'M', 'Blue', 29.99, 10),
    ('Black pants', 'Jeans, high waisted', 'Pants', '32', 'Black', 49.99, 5),
    ('White Sneakers', 'Sneakers', 'Shoes', '40', 'White', 69.99, 8),
    ('Floral Dress', 'Summer dress, floral print, thin straps.', 'Dress', 'M', 'Pink', 39.99, 12),
    ('Skinny Jeans', 'Dark denim jeans, high waist, skinny fit.', 'Pants', '28', 'Blue', 44.99, 18),
    ('White Sneakers', 'Casual sneakers, rubber sole, minimalist design.', 'Shoes', '40', 'White', 59.99, 10),
    ('Beige Chinos', 'Casual dress pants, straight cut, elastic waist.', 'Pants', '32', 'Beige', 39.99, 15),
    ('White Dress Shirt', 'Cotton shirt, long sleeves, classic collar.', 'Shirts', 'M', 'White', 29.99, 20),
    ('Brown Hiking Boots', 'Waterproof boots, rubber sole, perfect for hiking.', 'Shoes', '42', 'Brown', 89.99, 7),
    ('Distressed Jeans', 'Distressed denim jeans, mid-rise, regular fit.', 'Pants', '30', 'Blue', 49.99, 12);

# 要加載的路由
camel.main.routes-include-pattern = routes/*.yaml

mvn quarkus:dev

ollama ps

NAME            ID              SIZE      PROCESSOR    UNTIL
qwen2.5:0.5b    a8b0c5157701    1.4 GB    100% GPU     4 minutes from now

psql -h localhost -p 5432 -U quarkus -d store