chore: Add README.md files

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Roque Caballero 2025-03-28 17:36:22 +01:00
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target/
!.mvn/wrapper/maven-wrapper.jar
!**/src/main/**/target/
!**/src/test/**/target/
### IntelliJ IDEA ###
.idea/modules.xml
.idea/jarRepositories.xml
.idea/compiler.xml
.idea/libraries/
*.iws
*.iml
*.ipr
### Eclipse ###
.apt_generated
.classpath
.factorypath
.project
.settings
.springBeans
.sts4-cache
### NetBeans ###
/nbproject/private/
/nbbuild/
/dist/
/nbdist/
/.nb-gradle/
build/
!**/src/main/**/build/
!**/src/test/**/build/
### VS Code ###
.vscode/
### Mac OS ###
.DS_Store
/.idea/
/ict-scouts/

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kvant AI Model as a Service & LangChain4j
===============================================
This demos helps you get started with the integration of AI in Java based applications using Quarkus and LangChain4j.
Java is a widely used language established over the last 2 decades. There are a huge number of applications developed
using Java, including many deployed in enterprise environments. This makes it appropriate to approach AI from
the Java world.
# Goals
You are going to play (and hopefully enjoy) with:
* How to integrate LLMs (Language Models) in your Java application
* How to build a chatbot using LangChain4j
* How to configure and how to pass prompts to the LLM
* How to build agentic systems
* How to build simple and advanced RAG (Retrieval-Augmented Generation) patterns
* How to deal with prompt injection: Guardrails
* How to look in the room-machine: Observability
# Requirements
* Acquire kvant AI Model as a Service tokens. You can start with the FREE plans!!! - https://console.kvant.cloud/en/products/categories/CLOUD_MAAS
* Java SDK (version 21.x.x, recommend GraalVM CE) - https://www.graalvm.org/downloads/#
* Apache Maven JDK (version >= 3.9.x) - https://maven.apache.org/download.cgi
* Git (version >= 2.34.x) - https://git-scm.com/downloads
* Docker Desktop - https://www.docker.com/products/docker-desktop/ (version >= 4.35.x)
* LLM Access tokens - They will be provided during the workshop
* (Recommended) IntelliJ IDEA - https://www.jetbrains.com/idea/download/ (version >= 2024.2.5)
# Run demos
1) Clone the `ai-lc4j-workshop` repository - https://git.kvant.cloud/phoenix/ai-lc4j-workshop
2) Move to your `ai-lc4j-workshop` folder
3) Move to the corresponding `demo-0x` folder
4) Execute `mvn clean quarkus:dev`
5) Open your internet browser a point to `http:\\localhost:8080`
**WARNING:** Be sure your Docker environment is running
# Credits
These demos are based on the existing LangChain4j examples and workshops. They have been adapted to use
Phoenix Technologies AG's kvant AI cloud platform and LLM's hosted on it.
# Resources
* Phoenix Technologies AG - https://phoenix-technologies.ch/en
* Kvant AI Cloud - https://kvant.cloud/en/products/kvant-ai/ai-concierge
* LangChain - https://www.langchain.com/
* LangChain4j - https://docs.langchain4j.dev/intro/
* LangChain4j Tutorials - https://docs.langchain4j.dev/category/tutorials
* Quarkus LangChain4j - https://docs.quarkiverse.io/quarkus-langchain4j/dev/index.html
* Quarkus - https://quarkus.io/

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Demo 01 - Intro
===============================================
Its a simple Quarkus application that uses the Quarkus LangChain4j extension to interact with Phoenix Technologies LLM's.
Its a simple chatbot.

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<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>ch.phoenixtechnologies</groupId>
<artifactId>ai-lc4j-workshop</artifactId>
<version>0.0.1-SNAPSHOT</version>
</parent>
<artifactId>demo-01</artifactId>
<properties>
<java.version>21</java.version>
<maven.compiler.source>${java.version}</maven.compiler.source>
<maven.compiler.target>${java.version}</maven.compiler.target>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<!-- Plugin versions -->
<compiler-plugin.version>3.14.0</compiler-plugin.version>
<enforcer-plugin.version>3.5.0</enforcer-plugin.version>
<surefire-plugin.version>3.5.2</surefire-plugin.version>
<spotless-maven-plugin.version>2.44.3</spotless-maven-plugin.version>
<palantir-java-format.version>2.50.0</palantir-java-format.version>
<release-plugin.version>3.1.1</release-plugin.version>
<!-- Quarkus version -->
<quarkus.platform.artifact-id>quarkus-bom</quarkus.platform.artifact-id>
<quarkus.platform.group-id>io.quarkus.platform</quarkus.platform.group-id>
<quarkus.platform.version>3.19.2</quarkus.platform.version>
<!-- LangChain4j-->
<quarkus-langchain4j.version>0.25.0</quarkus-langchain4j.version>
<!-- Test dependency versions -->
<assertj.version>3.27.3</assertj.version>
</properties>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>${quarkus.platform.group-id}</groupId>
<artifactId>${quarkus.platform.artifact-id}</artifactId>
<version>${quarkus.platform.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
<dependency>
<groupId>io.quarkiverse.langchain4j</groupId>
<artifactId>quarkus-langchain4j-bom</artifactId>
<version>${quarkus-langchain4j.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<dependencies>
<dependency>
<groupId>io.quarkus</groupId>
<artifactId>quarkus-config-yaml</artifactId>
</dependency>
<dependency>
<groupId>io.quarkiverse.langchain4j</groupId>
<artifactId>quarkus-langchain4j-openai</artifactId>
</dependency>
<dependency>
<groupId>io.quarkus</groupId>
<artifactId>quarkus-rest</artifactId>
</dependency>
<dependency>
<groupId>io.quarkus</groupId>
<artifactId>quarkus-websockets-next</artifactId>
</dependency>
<!-- UI -->
<dependency>
<groupId>org.mvnpm</groupId>
<artifactId>importmap</artifactId>
<version>1.0.8</version>
</dependency>
<dependency>
<groupId>org.mvnpm.at.mvnpm</groupId>
<artifactId>vaadin-webcomponents</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.mvnpm</groupId>
<artifactId>es-module-shims</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.mvnpm</groupId>
<artifactId>wc-chatbot</artifactId>
<version>0.2.0</version>
<scope>runtime</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>${quarkus.platform.group-id}</groupId>
<artifactId>quarkus-maven-plugin</artifactId>
<version>${quarkus.platform.version}</version>
<extensions>true</extensions>
<executions>
<execution>
<goals>
<goal>build</goal>
<goal>generate-code</goal>
<goal>generate-code-tests</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>${compiler-plugin.version}</version>
<configuration>
<compilerArgs>
<arg>-parameters</arg>
</compilerArgs>
<release>${java.version}</release>
</configuration>
</plugin>
<plugin>
<artifactId>maven-surefire-plugin</artifactId>
<version>${surefire-plugin.version}</version>
<configuration>
<systemPropertyVariables>
<java.util.logging.manager>org.jboss.logmanager.LogManager</java.util.logging.manager>
<maven.home>${maven.home}</maven.home>
</systemPropertyVariables>
</configuration>
</plugin>
<plugin>
<artifactId>maven-enforcer-plugin</artifactId>
<version>${enforcer-plugin.version}</version>
<executions>
<execution>
<id>ban-bad-log4j-versions</id>
<phase>validate</phase>
<goals>
<goal>enforce</goal>
</goals>
<configuration>
<rules>
<bannedDependencies>
<excludes>
<exclude>org.apache.logging.log4j:log4j-core:(,2.17.1)</exclude>
</excludes>
</bannedDependencies>
</rules>
<fail>true</fail>
</configuration>
</execution>
</executions>
</plugin>
<plugin>
<groupId>com.diffplug.spotless</groupId>
<artifactId>spotless-maven-plugin</artifactId>
<version>${spotless-maven-plugin.version}</version>
<executions>
<execution>
<goals>
<goal>check</goal>
</goals>
<phase>compile</phase>
</execution>
</executions>
<configuration>
<java>
<removeUnusedImports />
<palantirJavaFormat>
<version>${palantir-java-format.version}</version>
<style>PALANTIR</style>
<formatJavadoc>false</formatJavadoc>
</palantirJavaFormat>
</java>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-release-plugin</artifactId>
<version>${release-plugin.version}</version>
<configuration>
<tagNameFormat>@{project.version}</tagNameFormat>
<checkModificationExcludes>mvnw</checkModificationExcludes>
<scmReleaseCommitComment>chore: release @{releaseLabel}</scmReleaseCommitComment>
<scmDevelopmentCommitComment>chore: prepare for next development iteration [skip ci]</scmDevelopmentCommitComment>
</configuration>
</plugin>
</plugins>
</build>
</project>

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package ch.phoenixtechnologies.lc4j.workshop;
import io.quarkiverse.langchain4j.RegisterAiService;
import jakarta.enterprise.context.SessionScoped;
@SessionScoped
@RegisterAiService
public interface CustomerSupportAgent {
String chat(String userMessage);
}

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package ch.phoenixtechnologies.lc4j.workshop;
import io.quarkus.websockets.next.OnOpen;
import io.quarkus.websockets.next.OnTextMessage;
import io.quarkus.websockets.next.WebSocket;
@WebSocket(path = "/customer-support-agent")
public class CustomerSupportAgentWebSocket {
private final CustomerSupportAgent agent;
public CustomerSupportAgentWebSocket(CustomerSupportAgent agent) {
this.agent = agent;
}
@OnOpen
public String onOpen() {
return "Welcome to Phoenix Technologies AI!";
}
@OnTextMessage
public String onTextMessage(String message) {
return agent.chat(message);
}
}

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package ch.phoenixtechnologies.lc4j.workshop;
import jakarta.annotation.PostConstruct;
import jakarta.enterprise.context.ApplicationScoped;
import jakarta.ws.rs.GET;
import jakarta.ws.rs.Path;
import jakarta.ws.rs.Produces;
import org.mvnpm.importmap.Aggregator;
@ApplicationScoped
@Path("/_importmap")
public class ImportmapResource {
private static final String JAVASCRIPT_CODE =
"""
const im = document.createElement('script');
im.type = 'importmap';
im.textContent = JSON.stringify(%s);
document.currentScript.after(im);
""";
private String importmap;
@PostConstruct
void init() {
Aggregator aggregator = new Aggregator();
// Add our own mappings
aggregator.addMapping("icons/", "/icons/");
aggregator.addMapping("components/", "/components/");
aggregator.addMapping("fonts/", "/fonts/");
this.importmap = aggregator.aggregateAsJson();
}
@GET
@Path("/dynamic.importmap")
@Produces("application/importmap+json")
public String importMap() {
return this.importmap;
}
@GET
@Path("/dynamic-importmap.js")
@Produces("application/javascript")
public String importMapJson() {
return JAVASCRIPT_CODE.formatted(this.importmap);
}
}

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import {css, LitElement} from 'lit';
import '@vaadin/icon';
import '@vaadin/button';
import '@vaadin/text-field';
import '@vaadin/text-area';
import '@vaadin/form-layout';
import '@vaadin/progress-bar';
import '@vaadin/checkbox';
import '@vaadin/horizontal-layout';
import '@vaadin/grid';
import '@vaadin/grid/vaadin-grid-sort-column.js';
export class DemoChat extends LitElement {
_stripHtml(html) {
const div = document.createElement("div");
div.innerHTML = html;
return div.textContent || div.innerText || "";
}
connectedCallback() {
const chatBot = document.getElementsByTagName("chat-bot")[0];
const protocol = (window.location.protocol === 'https:') ? 'wss' : 'ws';
const socket = new WebSocket(protocol + '://' + window.location.host + '/customer-support-agent');
const that = this;
socket.onmessage = function (event) {
chatBot.hideLastLoading();
// LLM response
let lastMessage;
if (chatBot.messages.length > 0) {
lastMessage = chatBot.messages[chatBot.messages.length - 1];
}
if (lastMessage && lastMessage.sender.name === "Bot" && ! lastMessage.loading) {
if (! lastMessage.msg) {
lastMessage.msg = "";
}
lastMessage.msg += event.data;
let bubbles = chatBot.shadowRoot.querySelectorAll("chat-bubble");
let bubble = bubbles.item(bubbles.length - 1);
if (lastMessage.message) {
bubble.innerHTML = that._stripHtml(lastMessage.message) + lastMessage.msg;
} else {
bubble.innerHTML = lastMessage.msg;
}
chatBot.body.scrollTo({ top: chatBot.body.scrollHeight, behavior: 'smooth' })
} else {
chatBot.sendMessage(event.data, {
right: false,
sender: {
name: "Bot"
}
});
}
}
chatBot.addEventListener("sent", function (e) {
if (e.detail.message.sender.name !== "Bot") {
// User message
const msg = that._stripHtml(e.detail.message.message);
socket.send(msg);
chatBot.sendMessage("", {
right: false,
loading: true
});
}
});
}
}
customElements.define('demo-chat', DemoChat);

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import {LitElement, html, css} from 'lit';
import '@vaadin/icon';
import '@vaadin/button';
import '@vaadin/text-field';
import '@vaadin/text-area';
import '@vaadin/form-layout';
import '@vaadin/progress-bar';
import '@vaadin/checkbox';
import '@vaadin/grid';
import '@vaadin/grid/vaadin-grid-sort-column.js';
export class DemoTitle extends LitElement {
static styles = css`
h2 {
font-family: "Red Hat Mono", monospace;
font-size: 60px;
font-style: normal;
font-variant: normal;
font-weight: 700;
line-height: 26.4px;
color: var(--main-highlight-text-color);
}
.title {
text-align: center;
padding: 1em;
background: var(--main-bg-color);
}
.explanation {
margin-left: auto;
margin-right: auto;
width: 50%;
text-align: justify;
font-size: 20px;
}
.explanation img {
max-width: 60%;
display: block;
float:left;
margin-right: 2em;
margin-top: 1em;
}
`
render() {
return html`
<div class="title">
<h2>Phoenix Technologies</h2>
</div>
<div class="explanation">
<p>Welcome to Phoenix Technologies!</p>
<p>Please click the button on the bottom right to start the conversation
with an LLM-powered customer support agent.</p>
</div>
`
}
}
customElements.define('demo-title', DemoTitle);

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@font-face{font-family:"Red Hat Display";font-style:normal;font-weight:400;font-display:swap;src:url(https://fonts.gstatic.com/s/redhatdisplay/v7/8vIQ7wUr0m80wwYf0QCXZzYzUoTg8z6hR4jNCH5Z.woff2) format("woff2");unicode-range:U+0100-024F,U+0259,U+1E00-1EFF,U+2020,U+20A0-20AB,U+20AD-20CF,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:"Red Hat Display";font-style:normal;font-weight:400;font-display:swap;src:url(https://fonts.gstatic.com/s/redhatdisplay/v7/8vIQ7wUr0m80wwYf0QCXZzYzUoTg_T6hR4jNCA.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+2000-206F,U+2074,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:"Red Hat Display";font-style:normal;font-weight:500;font-display:swap;src:url(https://fonts.gstatic.com/s/redhatdisplay/v7/8vIQ7wUr0m80wwYf0QCXZzYzUoTg8z6hR4jNCH5Z.woff2) format("woff2");unicode-range:U+0100-024F,U+0259,U+1E00-1EFF,U+2020,U+20A0-20AB,U+20AD-20CF,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:"Red Hat Display";font-style:normal;font-weight:500;font-display:swap;src:url(https://fonts.gstatic.com/s/redhatdisplay/v7/8vIQ7wUr0m80wwYf0QCXZzYzUoTg_T6hR4jNCA.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+2000-206F,U+2074,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:"Red Hat Display";font-style:normal;font-weight:700;font-display:swap;src:url(https://fonts.gstatic.com/s/redhatdisplay/v7/8vIQ7wUr0m80wwYf0QCXZzYzUoTg8z6hR4jNCH5Z.woff2) format("woff2");unicode-range:U+0100-024F,U+0259,U+1E00-1EFF,U+2020,U+20A0-20AB,U+20AD-20CF,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:"Red Hat Display";font-style:normal;font-weight:700;font-display:swap;src:url(https://fonts.gstatic.com/s/redhatdisplay/v7/8vIQ7wUr0m80wwYf0QCXZzYzUoTg_T6hR4jNCA.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+2000-206F,U+2074,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:"Red Hat Text";font-style:normal;font-weight:400;font-display:swap;src:url(https://fonts.gstatic.com/s/redhattext/v6/RrQXbohi_ic6B3yVSzGBrMxQZqctMc-JPWCN.woff2) format("woff2");unicode-range:U+0100-024F,U+0259,U+1E00-1EFF,U+2020,U+20A0-20AB,U+20AD-20CF,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:"Red Hat Text";font-style:normal;font-weight:400;font-display:swap;src:url(https://fonts.gstatic.com/s/redhattext/v6/RrQXbohi_ic6B3yVSzGBrMxQaKctMc-JPQ.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+2000-206F,U+2074,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:"Red Hat Text";font-style:normal;font-weight:500;font-display:swap;src:url(https://fonts.gstatic.com/s/redhattext/v6/RrQXbohi_ic6B3yVSzGBrMxQZqctMc-JPWCN.woff2) format("woff2");unicode-range:U+0100-024F,U+0259,U+1E00-1EFF,U+2020,U+20A0-20AB,U+20AD-20CF,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:"Red Hat Text";font-style:normal;font-weight:500;font-display:swap;src:url(https://fonts.gstatic.com/s/redhattext/v6/RrQXbohi_ic6B3yVSzGBrMxQaKctMc-JPQ.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+2000-206F,U+2074,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}/*# sourceMappingURL=red-hat-font.css.map */

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// import './font-awesome-brands.js';
// import './font-awesome-regular.js';
import './font-awesome-solid.js';
// export * from './font-awesome-brands.js';
// export * from './font-awesome-regular.js';
export * from './font-awesome-solid.js';

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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<link rel="shortcut icon" type="image/png" href="favicon.ico">
<script src="/_importmap/dynamic-importmap.js"></script>
<script type="module">
import 'icons/font-awesome.js';
import 'components/demo-title.js';
import 'components/demo-chat.js';
import 'wc-chatbot';
</script>
<link rel="stylesheet" href="fonts/red-hat-font.min.css">
<title>Miles of Smiles</title>
<style>
:root {
--main-bg-color: rgb(246, 242, 242);
--main-highlight-text-color: rgba(237, 98, 128);
}
body {
margin: 0;
width: 100%;
height: 100vh;
font-family: 'Red Hat Text', sans-serif;
overflow: hidden;
display: flex;
flex-direction: column;
justify-content: center;
color: var(--lumo-body-text-color);
background: var(--main-bg-color);
}
chat-bot {
--chatbot-avatar-bg-color: rgba(237, 98, 128);
--chatbot-avatar-margin: 10%;
--chatbot-header-bg-color: rgba(237, 98, 128);
--chatbot-header-title-color: #FFFFFF;
--chatbot-body-bg-color: var(--main-bg-color);
--chatbot-send-button-color: rgba(237, 98, 128);
}
chat-bot::part(chat-bubble) {
--chat-bubble-avatar-color: rgba(237, 98, 128);
--chat-bubble-color: rgba(203, 232, 237, 0.71);
--chat-bubble-right-color: rgb(157, 238, 244);
--chat-bubble-font-color: #333;
--chat-bubble-font-right-color: #333;
--chat-bubble-delay: 0.2s;
}
.middle {
margin-top: 2em;
overflow: hidden;
width: 50%;
margin-left: auto;
margin-right: auto;
display: flex;
}
</style>
</head>
<body>
<demo-title></demo-title>
<div class="middle">
<demo-chat>
<chat-bot></chat-bot>
</demo-chat>
</div>
</body>
</html>

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quarkus:
langchain4j:
openai:
#api-key: ${OPENAI_API_KEY}
api-key: #PUT_YOUR_TOKEN_HERE
base-url: https://inference-llama33-70b-maas.apps.ai.kvant.cloud/v1/
chat-model:
#model-name: gpt-4o-mini
model-name: inference-llama33-70b
log-requests: true
log-responses: true

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Demo 02 - LLM configuration
===============================================
In this step, we will play with various configurations of the language model (LLM)
# Temperature
`quarkus.langchain4j.openai.chat-model.temperature` controls the randomness of the models responses.
Lowering the temperature will make the model more conservative, while increasing it will make it more creative.
# Max tokens
`quarkus.langchain4j.openai.chat-model.max-tokens` limits the length of the response.
# Frequency penalty
`quarkus.langchain4j.openai.chat-model.frequency-penalty` defines how much the model should avoid repeating itself.

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demo-02/pom.xml Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>ch.phoenixtechnologies</groupId>
<artifactId>ai-lc4j-workshop</artifactId>
<version>0.0.1-SNAPSHOT</version>
</parent>
<artifactId>demo-02</artifactId>
<properties>
<java.version>21</java.version>
<maven.compiler.source>${java.version}</maven.compiler.source>
<maven.compiler.target>${java.version}</maven.compiler.target>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<!-- Plugin versions -->
<compiler-plugin.version>3.14.0</compiler-plugin.version>
<enforcer-plugin.version>3.5.0</enforcer-plugin.version>
<surefire-plugin.version>3.5.2</surefire-plugin.version>
<spotless-maven-plugin.version>2.44.3</spotless-maven-plugin.version>
<palantir-java-format.version>2.50.0</palantir-java-format.version>
<release-plugin.version>3.1.1</release-plugin.version>
<!-- Quarkus version -->
<quarkus.platform.artifact-id>quarkus-bom</quarkus.platform.artifact-id>
<quarkus.platform.group-id>io.quarkus.platform</quarkus.platform.group-id>
<quarkus.platform.version>3.19.2</quarkus.platform.version>
<!-- LangChain4j-->
<quarkus-langchain4j.version>0.25.0</quarkus-langchain4j.version>
<!-- Test dependency versions -->
<assertj.version>3.27.3</assertj.version>
</properties>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>${quarkus.platform.group-id}</groupId>
<artifactId>${quarkus.platform.artifact-id}</artifactId>
<version>${quarkus.platform.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
<dependency>
<groupId>io.quarkiverse.langchain4j</groupId>
<artifactId>quarkus-langchain4j-bom</artifactId>
<version>${quarkus-langchain4j.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<dependencies>
<dependency>
<groupId>io.quarkus</groupId>
<artifactId>quarkus-config-yaml</artifactId>
</dependency>
<dependency>
<groupId>io.quarkiverse.langchain4j</groupId>
<artifactId>quarkus-langchain4j-openai</artifactId>
</dependency>
<dependency>
<groupId>io.quarkus</groupId>
<artifactId>quarkus-rest</artifactId>
</dependency>
<dependency>
<groupId>io.quarkus</groupId>
<artifactId>quarkus-websockets-next</artifactId>
</dependency>
<!-- UI -->
<dependency>
<groupId>org.mvnpm</groupId>
<artifactId>importmap</artifactId>
<version>1.0.8</version>
</dependency>
<dependency>
<groupId>org.mvnpm.at.mvnpm</groupId>
<artifactId>vaadin-webcomponents</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.mvnpm</groupId>
<artifactId>es-module-shims</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.mvnpm</groupId>
<artifactId>wc-chatbot</artifactId>
<version>0.2.0</version>
<scope>runtime</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>${quarkus.platform.group-id}</groupId>
<artifactId>quarkus-maven-plugin</artifactId>
<version>${quarkus.platform.version}</version>
<extensions>true</extensions>
<executions>
<execution>
<goals>
<goal>build</goal>
<goal>generate-code</goal>
<goal>generate-code-tests</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>${compiler-plugin.version}</version>
<configuration>
<compilerArgs>
<arg>-parameters</arg>
</compilerArgs>
<release>${java.version}</release>
</configuration>
</plugin>
<plugin>
<artifactId>maven-surefire-plugin</artifactId>
<version>${surefire-plugin.version}</version>
<configuration>
<systemPropertyVariables>
<java.util.logging.manager>org.jboss.logmanager.LogManager</java.util.logging.manager>
<maven.home>${maven.home}</maven.home>
</systemPropertyVariables>
</configuration>
</plugin>
<plugin>
<artifactId>maven-enforcer-plugin</artifactId>
<version>${enforcer-plugin.version}</version>
<executions>
<execution>
<id>ban-bad-log4j-versions</id>
<phase>validate</phase>
<goals>
<goal>enforce</goal>
</goals>
<configuration>
<rules>
<bannedDependencies>
<excludes>
<exclude>org.apache.logging.log4j:log4j-core:(,2.17.1)</exclude>
</excludes>
</bannedDependencies>
</rules>
<fail>true</fail>
</configuration>
</execution>
</executions>
</plugin>
<plugin>
<groupId>com.diffplug.spotless</groupId>
<artifactId>spotless-maven-plugin</artifactId>
<version>${spotless-maven-plugin.version}</version>
<executions>
<execution>
<goals>
<goal>check</goal>
</goals>
<phase>compile</phase>
</execution>
</executions>
<configuration>
<java>
<removeUnusedImports />
<palantirJavaFormat>
<version>${palantir-java-format.version}</version>
<style>PALANTIR</style>
<formatJavadoc>false</formatJavadoc>
</palantirJavaFormat>
</java>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-release-plugin</artifactId>
<version>${release-plugin.version}</version>
<configuration>
<tagNameFormat>@{project.version}</tagNameFormat>
<checkModificationExcludes>mvnw</checkModificationExcludes>
<scmReleaseCommitComment>chore: release @{releaseLabel}</scmReleaseCommitComment>
<scmDevelopmentCommitComment>chore: prepare for next development iteration [skip ci]</scmDevelopmentCommitComment>
</configuration>
</plugin>
</plugins>
</build>
</project>

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package ch.phoenixtechnologies.lc4j.workshop;
import io.quarkiverse.langchain4j.RegisterAiService;
import jakarta.enterprise.context.SessionScoped;
@SessionScoped
@RegisterAiService
public interface CustomerSupportAgent {
String chat(String userMessage);
}

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package ch.phoenixtechnologies.lc4j.workshop;
import io.quarkus.websockets.next.OnOpen;
import io.quarkus.websockets.next.OnTextMessage;
import io.quarkus.websockets.next.WebSocket;
@WebSocket(path = "/customer-support-agent")
public class CustomerSupportAgentWebSocket {
private final CustomerSupportAgent agent;
public CustomerSupportAgentWebSocket(CustomerSupportAgent agent) {
this.agent = agent;
}
@OnOpen
public String onOpen() {
return "Welcome to Phoenix Technologies AI!";
}
@OnTextMessage
public String onTextMessage(String message) {
return agent.chat(message);
}
}

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package ch.phoenixtechnologies.lc4j.workshop;
import jakarta.annotation.PostConstruct;
import jakarta.enterprise.context.ApplicationScoped;
import jakarta.ws.rs.GET;
import jakarta.ws.rs.Path;
import jakarta.ws.rs.Produces;
import org.mvnpm.importmap.Aggregator;
@ApplicationScoped
@Path("/_importmap")
public class ImportmapResource {
private static final String JAVASCRIPT_CODE =
"""
const im = document.createElement('script');
im.type = 'importmap';
im.textContent = JSON.stringify(%s);
document.currentScript.after(im);
""";
private String importmap;
@PostConstruct
void init() {
Aggregator aggregator = new Aggregator();
// Add our own mappings
aggregator.addMapping("icons/", "/icons/");
aggregator.addMapping("components/", "/components/");
aggregator.addMapping("fonts/", "/fonts/");
this.importmap = aggregator.aggregateAsJson();
}
@GET
@Path("/dynamic.importmap")
@Produces("application/importmap+json")
public String importMap() {
return this.importmap;
}
@GET
@Path("/dynamic-importmap.js")
@Produces("application/javascript")
public String importMapJson() {
return JAVASCRIPT_CODE.formatted(this.importmap);
}
}

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import {css, LitElement} from 'lit';
import '@vaadin/icon';
import '@vaadin/button';
import '@vaadin/text-field';
import '@vaadin/text-area';
import '@vaadin/form-layout';
import '@vaadin/progress-bar';
import '@vaadin/checkbox';
import '@vaadin/horizontal-layout';
import '@vaadin/grid';
import '@vaadin/grid/vaadin-grid-sort-column.js';
export class DemoChat extends LitElement {
_stripHtml(html) {
const div = document.createElement("div");
div.innerHTML = html;
return div.textContent || div.innerText || "";
}
connectedCallback() {
const chatBot = document.getElementsByTagName("chat-bot")[0];
const protocol = (window.location.protocol === 'https:') ? 'wss' : 'ws';
const socket = new WebSocket(protocol + '://' + window.location.host + '/customer-support-agent');
const that = this;
socket.onmessage = function (event) {
chatBot.hideLastLoading();
// LLM response
let lastMessage;
if (chatBot.messages.length > 0) {
lastMessage = chatBot.messages[chatBot.messages.length - 1];
}
if (lastMessage && lastMessage.sender.name === "Bot" && ! lastMessage.loading) {
if (! lastMessage.msg) {
lastMessage.msg = "";
}
lastMessage.msg += event.data;
let bubbles = chatBot.shadowRoot.querySelectorAll("chat-bubble");
let bubble = bubbles.item(bubbles.length - 1);
if (lastMessage.message) {
bubble.innerHTML = that._stripHtml(lastMessage.message) + lastMessage.msg;
} else {
bubble.innerHTML = lastMessage.msg;
}
chatBot.body.scrollTo({ top: chatBot.body.scrollHeight, behavior: 'smooth' })
} else {
chatBot.sendMessage(event.data, {
right: false,
sender: {
name: "Bot"
}
});
}
}
chatBot.addEventListener("sent", function (e) {
if (e.detail.message.sender.name !== "Bot") {
// User message
const msg = that._stripHtml(e.detail.message.message);
socket.send(msg);
chatBot.sendMessage("", {
right: false,
loading: true
});
}
});
}
}
customElements.define('demo-chat', DemoChat);

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import {LitElement, html, css} from 'lit';
import '@vaadin/icon';
import '@vaadin/button';
import '@vaadin/text-field';
import '@vaadin/text-area';
import '@vaadin/form-layout';
import '@vaadin/progress-bar';
import '@vaadin/checkbox';
import '@vaadin/grid';
import '@vaadin/grid/vaadin-grid-sort-column.js';
export class DemoTitle extends LitElement {
static styles = css`
h2 {
font-family: "Red Hat Mono", monospace;
font-size: 60px;
font-style: normal;
font-variant: normal;
font-weight: 700;
line-height: 26.4px;
color: var(--main-highlight-text-color);
}
.title {
text-align: center;
padding: 1em;
background: var(--main-bg-color);
}
.explanation {
margin-left: auto;
margin-right: auto;
width: 50%;
text-align: justify;
font-size: 20px;
}
.explanation img {
max-width: 60%;
display: block;
float:left;
margin-right: 2em;
margin-top: 1em;
}
`
render() {
return html`
<div class="title">
<h2>Phoenix Technologies</h2>
</div>
<div class="explanation">
<p>Welcome to Phoenix Technologies!</p>
<p>Please click the button on the bottom right to start the conversation
with an LLM-powered customer support agent.</p>
</div>
`
}
}
customElements.define('demo-title', DemoTitle);

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@font-face{font-family:"Red Hat Display";font-style:normal;font-weight:400;font-display:swap;src:url(https://fonts.gstatic.com/s/redhatdisplay/v7/8vIQ7wUr0m80wwYf0QCXZzYzUoTg8z6hR4jNCH5Z.woff2) format("woff2");unicode-range:U+0100-024F,U+0259,U+1E00-1EFF,U+2020,U+20A0-20AB,U+20AD-20CF,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:"Red Hat Display";font-style:normal;font-weight:400;font-display:swap;src:url(https://fonts.gstatic.com/s/redhatdisplay/v7/8vIQ7wUr0m80wwYf0QCXZzYzUoTg_T6hR4jNCA.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+2000-206F,U+2074,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:"Red Hat Display";font-style:normal;font-weight:500;font-display:swap;src:url(https://fonts.gstatic.com/s/redhatdisplay/v7/8vIQ7wUr0m80wwYf0QCXZzYzUoTg8z6hR4jNCH5Z.woff2) format("woff2");unicode-range:U+0100-024F,U+0259,U+1E00-1EFF,U+2020,U+20A0-20AB,U+20AD-20CF,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:"Red Hat Display";font-style:normal;font-weight:500;font-display:swap;src:url(https://fonts.gstatic.com/s/redhatdisplay/v7/8vIQ7wUr0m80wwYf0QCXZzYzUoTg_T6hR4jNCA.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+2000-206F,U+2074,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:"Red Hat Display";font-style:normal;font-weight:700;font-display:swap;src:url(https://fonts.gstatic.com/s/redhatdisplay/v7/8vIQ7wUr0m80wwYf0QCXZzYzUoTg8z6hR4jNCH5Z.woff2) format("woff2");unicode-range:U+0100-024F,U+0259,U+1E00-1EFF,U+2020,U+20A0-20AB,U+20AD-20CF,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:"Red Hat Display";font-style:normal;font-weight:700;font-display:swap;src:url(https://fonts.gstatic.com/s/redhatdisplay/v7/8vIQ7wUr0m80wwYf0QCXZzYzUoTg_T6hR4jNCA.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+2000-206F,U+2074,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:"Red Hat Text";font-style:normal;font-weight:400;font-display:swap;src:url(https://fonts.gstatic.com/s/redhattext/v6/RrQXbohi_ic6B3yVSzGBrMxQZqctMc-JPWCN.woff2) format("woff2");unicode-range:U+0100-024F,U+0259,U+1E00-1EFF,U+2020,U+20A0-20AB,U+20AD-20CF,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:"Red Hat Text";font-style:normal;font-weight:400;font-display:swap;src:url(https://fonts.gstatic.com/s/redhattext/v6/RrQXbohi_ic6B3yVSzGBrMxQaKctMc-JPQ.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+2000-206F,U+2074,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:"Red Hat Text";font-style:normal;font-weight:500;font-display:swap;src:url(https://fonts.gstatic.com/s/redhattext/v6/RrQXbohi_ic6B3yVSzGBrMxQZqctMc-JPWCN.woff2) format("woff2");unicode-range:U+0100-024F,U+0259,U+1E00-1EFF,U+2020,U+20A0-20AB,U+20AD-20CF,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:"Red Hat Text";font-style:normal;font-weight:500;font-display:swap;src:url(https://fonts.gstatic.com/s/redhattext/v6/RrQXbohi_ic6B3yVSzGBrMxQaKctMc-JPQ.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+2000-206F,U+2074,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}/*# sourceMappingURL=red-hat-font.css.map */

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// import './font-awesome-brands.js';
// import './font-awesome-regular.js';
import './font-awesome-solid.js';
// export * from './font-awesome-brands.js';
// export * from './font-awesome-regular.js';
export * from './font-awesome-solid.js';

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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<link rel="shortcut icon" type="image/png" href="favicon.ico">
<script src="/_importmap/dynamic-importmap.js"></script>
<script type="module">
import 'icons/font-awesome.js';
import 'components/demo-title.js';
import 'components/demo-chat.js';
import 'wc-chatbot';
</script>
<link rel="stylesheet" href="fonts/red-hat-font.min.css">
<title>Miles of Smiles</title>
<style>
:root {
--main-bg-color: rgb(246, 242, 242);
--main-highlight-text-color: rgba(237, 98, 128);
}
body {
margin: 0;
width: 100%;
height: 100vh;
font-family: 'Red Hat Text', sans-serif;
overflow: hidden;
display: flex;
flex-direction: column;
justify-content: center;
color: var(--lumo-body-text-color);
background: var(--main-bg-color);
}
chat-bot {
--chatbot-avatar-bg-color: rgba(237, 98, 128);
--chatbot-avatar-margin: 10%;
--chatbot-header-bg-color: rgba(237, 98, 128);
--chatbot-header-title-color: #FFFFFF;
--chatbot-body-bg-color: var(--main-bg-color);
--chatbot-send-button-color: rgba(237, 98, 128);
}
chat-bot::part(chat-bubble) {
--chat-bubble-avatar-color: rgba(237, 98, 128);
--chat-bubble-color: rgba(203, 232, 237, 0.71);
--chat-bubble-right-color: rgb(157, 238, 244);
--chat-bubble-font-color: #333;
--chat-bubble-font-right-color: #333;
--chat-bubble-delay: 0.2s;
}
.middle {
margin-top: 2em;
overflow: hidden;
width: 50%;
margin-left: auto;
margin-right: auto;
display: flex;
}
</style>
</head>
<body>
<demo-title></demo-title>
<div class="middle">
<demo-chat>
<chat-bot></chat-bot>
</demo-chat>
</div>
</body>
</html>

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quarkus:
langchain4j:
openai:
api-key: #PUT_YOUR_TOKEN_HERE
base-url: https://inference-llama33-70b-maas.apps.ai.kvant.cloud/v1/
timeout: 60s
chat-model:
model-name: inference-llama33-70b
temperature: 1.0
#max-tokens: 1000
#frequency-penalty: 2
frequency-penalty: 0
log-requests: true
log-responses: true

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demo-03/README.md Normal file
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Demo 03 - Streaming
===============================================
LLM responses can be long
# Chunks
`Multi<String> chat(String userMessage)` ndicate that the response will be streamed instead of returned synchronously.

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<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>ch.phoenixtechnologies</groupId>
<artifactId>ai-lc4j-workshop</artifactId>
<version>0.0.1-SNAPSHOT</version>
</parent>
<artifactId>demo-03</artifactId>
<properties>
<java.version>21</java.version>
<maven.compiler.source>${java.version}</maven.compiler.source>
<maven.compiler.target>${java.version}</maven.compiler.target>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<!-- Plugin versions -->
<compiler-plugin.version>3.14.0</compiler-plugin.version>
<enforcer-plugin.version>3.5.0</enforcer-plugin.version>
<surefire-plugin.version>3.5.2</surefire-plugin.version>
<spotless-maven-plugin.version>2.44.3</spotless-maven-plugin.version>
<palantir-java-format.version>2.50.0</palantir-java-format.version>
<release-plugin.version>3.1.1</release-plugin.version>
<!-- Quarkus version -->
<quarkus.platform.artifact-id>quarkus-bom</quarkus.platform.artifact-id>
<quarkus.platform.group-id>io.quarkus.platform</quarkus.platform.group-id>
<quarkus.platform.version>3.19.2</quarkus.platform.version>
<!-- LangChain4j-->
<quarkus-langchain4j.version>0.25.0</quarkus-langchain4j.version>
<!-- Test dependency versions -->
<assertj.version>3.27.3</assertj.version>
</properties>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>${quarkus.platform.group-id}</groupId>
<artifactId>${quarkus.platform.artifact-id}</artifactId>
<version>${quarkus.platform.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
<dependency>
<groupId>io.quarkiverse.langchain4j</groupId>
<artifactId>quarkus-langchain4j-bom</artifactId>
<version>${quarkus-langchain4j.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<dependencies>
<dependency>
<groupId>io.quarkus</groupId>
<artifactId>quarkus-config-yaml</artifactId>
</dependency>
<dependency>
<groupId>io.quarkiverse.langchain4j</groupId>
<artifactId>quarkus-langchain4j-openai</artifactId>
</dependency>
<dependency>
<groupId>io.quarkus</groupId>
<artifactId>quarkus-rest</artifactId>
</dependency>
<dependency>
<groupId>io.quarkus</groupId>
<artifactId>quarkus-websockets-next</artifactId>
</dependency>
<!-- UI -->
<dependency>
<groupId>org.mvnpm</groupId>
<artifactId>importmap</artifactId>
<version>1.0.8</version>
</dependency>
<dependency>
<groupId>org.mvnpm.at.mvnpm</groupId>
<artifactId>vaadin-webcomponents</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.mvnpm</groupId>
<artifactId>es-module-shims</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.mvnpm</groupId>
<artifactId>wc-chatbot</artifactId>
<version>0.2.0</version>
<scope>runtime</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>${quarkus.platform.group-id}</groupId>
<artifactId>quarkus-maven-plugin</artifactId>
<version>${quarkus.platform.version}</version>
<extensions>true</extensions>
<executions>
<execution>
<goals>
<goal>build</goal>
<goal>generate-code</goal>
<goal>generate-code-tests</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>${compiler-plugin.version}</version>
<configuration>
<compilerArgs>
<arg>-parameters</arg>
</compilerArgs>
<release>${java.version}</release>
</configuration>
</plugin>
<plugin>
<artifactId>maven-surefire-plugin</artifactId>
<version>${surefire-plugin.version}</version>
<configuration>
<systemPropertyVariables>
<java.util.logging.manager>org.jboss.logmanager.LogManager</java.util.logging.manager>
<maven.home>${maven.home}</maven.home>
</systemPropertyVariables>
</configuration>
</plugin>
<plugin>
<artifactId>maven-enforcer-plugin</artifactId>
<version>${enforcer-plugin.version}</version>
<executions>
<execution>
<id>ban-bad-log4j-versions</id>
<phase>validate</phase>
<goals>
<goal>enforce</goal>
</goals>
<configuration>
<rules>
<bannedDependencies>
<excludes>
<exclude>org.apache.logging.log4j:log4j-core:(,2.17.1)</exclude>
</excludes>
</bannedDependencies>
</rules>
<fail>true</fail>
</configuration>
</execution>
</executions>
</plugin>
<plugin>
<groupId>com.diffplug.spotless</groupId>
<artifactId>spotless-maven-plugin</artifactId>
<version>${spotless-maven-plugin.version}</version>
<executions>
<execution>
<goals>
<goal>check</goal>
</goals>
<phase>compile</phase>
</execution>
</executions>
<configuration>
<java>
<removeUnusedImports />
<palantirJavaFormat>
<version>${palantir-java-format.version}</version>
<style>PALANTIR</style>
<formatJavadoc>false</formatJavadoc>
</palantirJavaFormat>
</java>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-release-plugin</artifactId>
<version>${release-plugin.version}</version>
<configuration>
<tagNameFormat>@{project.version}</tagNameFormat>
<checkModificationExcludes>mvnw</checkModificationExcludes>
<scmReleaseCommitComment>chore: release @{releaseLabel}</scmReleaseCommitComment>
<scmDevelopmentCommitComment>chore: prepare for next development iteration [skip ci]</scmDevelopmentCommitComment>
</configuration>
</plugin>
</plugins>
</build>
</project>

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@ -0,0 +1,11 @@
package ch.phoenixtechnologies.lc4j.workshop;
import io.quarkiverse.langchain4j.RegisterAiService;
import io.smallrye.mutiny.Multi;
import jakarta.enterprise.context.SessionScoped;
@SessionScoped
@RegisterAiService
public interface CustomerSupportAgent {
Multi<String> chat(String userMessage);
}

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package ch.phoenixtechnologies.lc4j.workshop;
import io.quarkus.websockets.next.OnOpen;
import io.quarkus.websockets.next.OnTextMessage;
import io.quarkus.websockets.next.WebSocket;
import io.smallrye.mutiny.Multi;
@WebSocket(path = "/customer-support-agent")
public class CustomerSupportAgentWebSocket {
private final CustomerSupportAgent agent;
public CustomerSupportAgentWebSocket(CustomerSupportAgent agent) {
this.agent = agent;
}
@OnOpen
public String onOpen() {
return "Welcome to Phoenix Technologies AI!";
}
@OnTextMessage
public Multi<String> onTextMessage(String message) {
return agent.chat(message);
}
}

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@ -0,0 +1,45 @@
package ch.phoenixtechnologies.lc4j.workshop;
import jakarta.annotation.PostConstruct;
import jakarta.enterprise.context.ApplicationScoped;
import jakarta.ws.rs.GET;
import jakarta.ws.rs.Path;
import jakarta.ws.rs.Produces;
import org.mvnpm.importmap.Aggregator;
@ApplicationScoped
@Path("/_importmap")
public class ImportmapResource {
private static final String JAVASCRIPT_CODE =
"""
const im = document.createElement('script');
im.type = 'importmap';
im.textContent = JSON.stringify(%s);
document.currentScript.after(im);
""";
private String importmap;
@PostConstruct
void init() {
Aggregator aggregator = new Aggregator();
// Add our own mappings
aggregator.addMapping("icons/", "/icons/");
aggregator.addMapping("components/", "/components/");
aggregator.addMapping("fonts/", "/fonts/");
this.importmap = aggregator.aggregateAsJson();
}
@GET
@Path("/dynamic.importmap")
@Produces("application/importmap+json")
public String importMap() {
return this.importmap;
}
@GET
@Path("/dynamic-importmap.js")
@Produces("application/javascript")
public String importMapJson() {
return JAVASCRIPT_CODE.formatted(this.importmap);
}
}

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import {css, LitElement} from 'lit';
import '@vaadin/icon';
import '@vaadin/button';
import '@vaadin/text-field';
import '@vaadin/text-area';
import '@vaadin/form-layout';
import '@vaadin/progress-bar';
import '@vaadin/checkbox';
import '@vaadin/horizontal-layout';
import '@vaadin/grid';
import '@vaadin/grid/vaadin-grid-sort-column.js';
export class DemoChat extends LitElement {
_stripHtml(html) {
const div = document.createElement("div");
div.innerHTML = html;
return div.textContent || div.innerText || "";
}
connectedCallback() {
const chatBot = document.getElementsByTagName("chat-bot")[0];
const protocol = (window.location.protocol === 'https:') ? 'wss' : 'ws';
const socket = new WebSocket(protocol + '://' + window.location.host + '/customer-support-agent');
const that = this;
socket.onmessage = function (event) {
chatBot.hideLastLoading();
// LLM response
let lastMessage;
if (chatBot.messages.length > 0) {
lastMessage = chatBot.messages[chatBot.messages.length - 1];
}
if (lastMessage && lastMessage.sender.name === "Bot" && ! lastMessage.loading) {
if (! lastMessage.msg) {
lastMessage.msg = "";
}
lastMessage.msg += event.data;
let bubbles = chatBot.shadowRoot.querySelectorAll("chat-bubble");
let bubble = bubbles.item(bubbles.length - 1);
if (lastMessage.message) {
bubble.innerHTML = that._stripHtml(lastMessage.message) + lastMessage.msg;
} else {
bubble.innerHTML = lastMessage.msg;
}
chatBot.body.scrollTo({ top: chatBot.body.scrollHeight, behavior: 'smooth' })
} else {
chatBot.sendMessage(event.data, {
right: false,
sender: {
name: "Bot"
}
});
}
}
chatBot.addEventListener("sent", function (e) {
if (e.detail.message.sender.name !== "Bot") {
// User message
const msg = that._stripHtml(e.detail.message.message);
socket.send(msg);
chatBot.sendMessage("", {
right: false,
loading: true
});
}
});
}
}
customElements.define('demo-chat', DemoChat);

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import {LitElement, html, css} from 'lit';
import '@vaadin/icon';
import '@vaadin/button';
import '@vaadin/text-field';
import '@vaadin/text-area';
import '@vaadin/form-layout';
import '@vaadin/progress-bar';
import '@vaadin/checkbox';
import '@vaadin/grid';
import '@vaadin/grid/vaadin-grid-sort-column.js';
export class DemoTitle extends LitElement {
static styles = css`
h2 {
font-family: "Red Hat Mono", monospace;
font-size: 60px;
font-style: normal;
font-variant: normal;
font-weight: 700;
line-height: 26.4px;
color: var(--main-highlight-text-color);
}
.title {
text-align: center;
padding: 1em;
background: var(--main-bg-color);
}
.explanation {
margin-left: auto;
margin-right: auto;
width: 50%;
text-align: justify;
font-size: 20px;
}
.explanation img {
max-width: 60%;
display: block;
float:left;
margin-right: 2em;
margin-top: 1em;
}
`
render() {
return html`
<div class="title">
<h2>Phoenix Technologies</h2>
</div>
<div class="explanation">
<p>Welcome to Phoenix Technologies!</p>
<p>Please click the button on the bottom right to start the conversation
with an LLM-powered customer support agent.</p>
</div>
`
}
}
customElements.define('demo-title', DemoTitle);

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@font-face{font-family:"Red Hat Display";font-style:normal;font-weight:400;font-display:swap;src:url(https://fonts.gstatic.com/s/redhatdisplay/v7/8vIQ7wUr0m80wwYf0QCXZzYzUoTg8z6hR4jNCH5Z.woff2) format("woff2");unicode-range:U+0100-024F,U+0259,U+1E00-1EFF,U+2020,U+20A0-20AB,U+20AD-20CF,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:"Red Hat Display";font-style:normal;font-weight:400;font-display:swap;src:url(https://fonts.gstatic.com/s/redhatdisplay/v7/8vIQ7wUr0m80wwYf0QCXZzYzUoTg_T6hR4jNCA.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+2000-206F,U+2074,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:"Red Hat Display";font-style:normal;font-weight:500;font-display:swap;src:url(https://fonts.gstatic.com/s/redhatdisplay/v7/8vIQ7wUr0m80wwYf0QCXZzYzUoTg8z6hR4jNCH5Z.woff2) format("woff2");unicode-range:U+0100-024F,U+0259,U+1E00-1EFF,U+2020,U+20A0-20AB,U+20AD-20CF,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:"Red Hat Display";font-style:normal;font-weight:500;font-display:swap;src:url(https://fonts.gstatic.com/s/redhatdisplay/v7/8vIQ7wUr0m80wwYf0QCXZzYzUoTg_T6hR4jNCA.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+2000-206F,U+2074,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:"Red Hat Display";font-style:normal;font-weight:700;font-display:swap;src:url(https://fonts.gstatic.com/s/redhatdisplay/v7/8vIQ7wUr0m80wwYf0QCXZzYzUoTg8z6hR4jNCH5Z.woff2) format("woff2");unicode-range:U+0100-024F,U+0259,U+1E00-1EFF,U+2020,U+20A0-20AB,U+20AD-20CF,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:"Red Hat Display";font-style:normal;font-weight:700;font-display:swap;src:url(https://fonts.gstatic.com/s/redhatdisplay/v7/8vIQ7wUr0m80wwYf0QCXZzYzUoTg_T6hR4jNCA.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+2000-206F,U+2074,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:"Red Hat Text";font-style:normal;font-weight:400;font-display:swap;src:url(https://fonts.gstatic.com/s/redhattext/v6/RrQXbohi_ic6B3yVSzGBrMxQZqctMc-JPWCN.woff2) format("woff2");unicode-range:U+0100-024F,U+0259,U+1E00-1EFF,U+2020,U+20A0-20AB,U+20AD-20CF,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:"Red Hat Text";font-style:normal;font-weight:400;font-display:swap;src:url(https://fonts.gstatic.com/s/redhattext/v6/RrQXbohi_ic6B3yVSzGBrMxQaKctMc-JPQ.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+2000-206F,U+2074,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:"Red Hat Text";font-style:normal;font-weight:500;font-display:swap;src:url(https://fonts.gstatic.com/s/redhattext/v6/RrQXbohi_ic6B3yVSzGBrMxQZqctMc-JPWCN.woff2) format("woff2");unicode-range:U+0100-024F,U+0259,U+1E00-1EFF,U+2020,U+20A0-20AB,U+20AD-20CF,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:"Red Hat Text";font-style:normal;font-weight:500;font-display:swap;src:url(https://fonts.gstatic.com/s/redhattext/v6/RrQXbohi_ic6B3yVSzGBrMxQaKctMc-JPQ.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+2000-206F,U+2074,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}/*# sourceMappingURL=red-hat-font.css.map */

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// import './font-awesome-brands.js';
// import './font-awesome-regular.js';
import './font-awesome-solid.js';
// export * from './font-awesome-brands.js';
// export * from './font-awesome-regular.js';
export * from './font-awesome-solid.js';

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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<link rel="shortcut icon" type="image/png" href="favicon.ico">
<script src="/_importmap/dynamic-importmap.js"></script>
<script type="module">
import 'icons/font-awesome.js';
import 'components/demo-title.js';
import 'components/demo-chat.js';
import 'wc-chatbot';
</script>
<link rel="stylesheet" href="fonts/red-hat-font.min.css">
<title>Miles of Smiles</title>
<style>
:root {
--main-bg-color: rgb(246, 242, 242);
--main-highlight-text-color: rgba(237, 98, 128);
}
body {
margin: 0;
width: 100%;
height: 100vh;
font-family: 'Red Hat Text', sans-serif;
overflow: hidden;
display: flex;
flex-direction: column;
justify-content: center;
color: var(--lumo-body-text-color);
background: var(--main-bg-color);
}
chat-bot {
--chatbot-avatar-bg-color: rgba(237, 98, 128);
--chatbot-avatar-margin: 10%;
--chatbot-header-bg-color: rgba(237, 98, 128);
--chatbot-header-title-color: #FFFFFF;
--chatbot-body-bg-color: var(--main-bg-color);
--chatbot-send-button-color: rgba(237, 98, 128);
}
chat-bot::part(chat-bubble) {
--chat-bubble-avatar-color: rgba(237, 98, 128);
--chat-bubble-color: rgba(203, 232, 237, 0.71);
--chat-bubble-right-color: rgb(157, 238, 244);
--chat-bubble-font-color: #333;
--chat-bubble-font-right-color: #333;
--chat-bubble-delay: 0.2s;
}
.middle {
margin-top: 2em;
overflow: hidden;
width: 50%;
margin-left: auto;
margin-right: auto;
display: flex;
}
</style>
</head>
<body>
<demo-title></demo-title>
<div class="middle">
<demo-chat>
<chat-bot></chat-bot>
</demo-chat>
</div>
</body>
</html>

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@ -0,0 +1,14 @@
quarkus:
langchain4j:
openai:
api-key: #PUT_YOUR_TOKEN_HERE
base-url: https://inference-llama33-70b-maas.apps.ai.kvant.cloud/v1/
timeout: 60s
chat-model:
model-name: inference-llama33-70b
temperature: 1.0
#max-tokens: 1000
#frequency-penalty: 2
frequency-penalty: 0
log-requests: true
log-responses: true

5
demo-04/README.md Normal file
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Demo 04 - System messages
===============================================
A system message in a LLM is a directive that helps guide the models behavior and tone during an interaction.
It typically sets the context, role, or boundaries for the model, defining how it should respond to the user.

199
demo-04/pom.xml Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>ch.phoenixtechnologies</groupId>
<artifactId>ai-lc4j-workshop</artifactId>
<version>0.0.1-SNAPSHOT</version>
</parent>
<artifactId>demo-04</artifactId>
<properties>
<java.version>21</java.version>
<maven.compiler.source>${java.version}</maven.compiler.source>
<maven.compiler.target>${java.version}</maven.compiler.target>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<!-- Plugin versions -->
<compiler-plugin.version>3.14.0</compiler-plugin.version>
<enforcer-plugin.version>3.5.0</enforcer-plugin.version>
<surefire-plugin.version>3.5.2</surefire-plugin.version>
<spotless-maven-plugin.version>2.44.3</spotless-maven-plugin.version>
<palantir-java-format.version>2.50.0</palantir-java-format.version>
<release-plugin.version>3.1.1</release-plugin.version>
<!-- Quarkus version -->
<quarkus.platform.artifact-id>quarkus-bom</quarkus.platform.artifact-id>
<quarkus.platform.group-id>io.quarkus.platform</quarkus.platform.group-id>
<quarkus.platform.version>3.19.2</quarkus.platform.version>
<!-- LangChain4j-->
<quarkus-langchain4j.version>0.25.0</quarkus-langchain4j.version>
<!-- Test dependency versions -->
<assertj.version>3.27.3</assertj.version>
</properties>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>${quarkus.platform.group-id}</groupId>
<artifactId>${quarkus.platform.artifact-id}</artifactId>
<version>${quarkus.platform.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
<dependency>
<groupId>io.quarkiverse.langchain4j</groupId>
<artifactId>quarkus-langchain4j-bom</artifactId>
<version>${quarkus-langchain4j.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<dependencies>
<dependency>
<groupId>io.quarkus</groupId>
<artifactId>quarkus-config-yaml</artifactId>
</dependency>
<dependency>
<groupId>io.quarkiverse.langchain4j</groupId>
<artifactId>quarkus-langchain4j-openai</artifactId>
</dependency>
<dependency>
<groupId>io.quarkus</groupId>
<artifactId>quarkus-rest</artifactId>
</dependency>
<dependency>
<groupId>io.quarkus</groupId>
<artifactId>quarkus-websockets-next</artifactId>
</dependency>
<!-- UI -->
<dependency>
<groupId>org.mvnpm</groupId>
<artifactId>importmap</artifactId>
<version>1.0.8</version>
</dependency>
<dependency>
<groupId>org.mvnpm.at.mvnpm</groupId>
<artifactId>vaadin-webcomponents</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.mvnpm</groupId>
<artifactId>es-module-shims</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.mvnpm</groupId>
<artifactId>wc-chatbot</artifactId>
<version>0.2.0</version>
<scope>runtime</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>${quarkus.platform.group-id}</groupId>
<artifactId>quarkus-maven-plugin</artifactId>
<version>${quarkus.platform.version}</version>
<extensions>true</extensions>
<executions>
<execution>
<goals>
<goal>build</goal>
<goal>generate-code</goal>
<goal>generate-code-tests</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>${compiler-plugin.version}</version>
<configuration>
<compilerArgs>
<arg>-parameters</arg>
</compilerArgs>
<release>${java.version}</release>
</configuration>
</plugin>
<plugin>
<artifactId>maven-surefire-plugin</artifactId>
<version>${surefire-plugin.version}</version>
<configuration>
<systemPropertyVariables>
<java.util.logging.manager>org.jboss.logmanager.LogManager</java.util.logging.manager>
<maven.home>${maven.home}</maven.home>
</systemPropertyVariables>
</configuration>
</plugin>
<plugin>
<artifactId>maven-enforcer-plugin</artifactId>
<version>${enforcer-plugin.version}</version>
<executions>
<execution>
<id>ban-bad-log4j-versions</id>
<phase>validate</phase>
<goals>
<goal>enforce</goal>
</goals>
<configuration>
<rules>
<bannedDependencies>
<excludes>
<exclude>org.apache.logging.log4j:log4j-core:(,2.17.1)</exclude>
</excludes>
</bannedDependencies>
</rules>
<fail>true</fail>
</configuration>
</execution>
</executions>
</plugin>
<plugin>
<groupId>com.diffplug.spotless</groupId>
<artifactId>spotless-maven-plugin</artifactId>
<version>${spotless-maven-plugin.version}</version>
<executions>
<execution>
<goals>
<goal>check</goal>
</goals>
<phase>compile</phase>
</execution>
</executions>
<configuration>
<java>
<removeUnusedImports />
<palantirJavaFormat>
<version>${palantir-java-format.version}</version>
<style>PALANTIR</style>
<formatJavadoc>false</formatJavadoc>
</palantirJavaFormat>
</java>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-release-plugin</artifactId>
<version>${release-plugin.version}</version>
<configuration>
<tagNameFormat>@{project.version}</tagNameFormat>
<checkModificationExcludes>mvnw</checkModificationExcludes>
<scmReleaseCommitComment>chore: release @{releaseLabel}</scmReleaseCommitComment>
<scmDevelopmentCommitComment>chore: prepare for next development iteration [skip ci]</scmDevelopmentCommitComment>
</configuration>
</plugin>
</plugins>
</build>
</project>

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package ch.phoenixtechnologies.lc4j.workshop;
import dev.langchain4j.service.SystemMessage;
import io.quarkiverse.langchain4j.RegisterAiService;
import io.smallrye.mutiny.Multi;
import jakarta.enterprise.context.SessionScoped;
@SessionScoped
@RegisterAiService
public interface CustomerSupportAgent {
@SystemMessage(
"""
You are a customer support agent of a IT company 'Phoenix Technologies AG based in Switzerland.
You are friendly, polite and concise.
If the question is unrelated to IT services, you should politely redirect the customer to the right department.
""")
Multi<String> chat(String userMessage);
}

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package ch.phoenixtechnologies.lc4j.workshop;
import io.quarkus.websockets.next.OnOpen;
import io.quarkus.websockets.next.OnTextMessage;
import io.quarkus.websockets.next.WebSocket;
import io.smallrye.mutiny.Multi;
@WebSocket(path = "/customer-support-agent")
public class CustomerSupportAgentWebSocket {
private final CustomerSupportAgent agent;
public CustomerSupportAgentWebSocket(CustomerSupportAgent agent) {
this.agent = agent;
}
@OnOpen
public String onOpen() {
return "Welcome to Phoenix Technologies AI!";
}
@OnTextMessage
public Multi<String> onTextMessage(String message) {
return agent.chat(message);
}
}

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package ch.phoenixtechnologies.lc4j.workshop;
import jakarta.annotation.PostConstruct;
import jakarta.enterprise.context.ApplicationScoped;
import jakarta.ws.rs.GET;
import jakarta.ws.rs.Path;
import jakarta.ws.rs.Produces;
import org.mvnpm.importmap.Aggregator;
@ApplicationScoped
@Path("/_importmap")
public class ImportmapResource {
private static final String JAVASCRIPT_CODE =
"""
const im = document.createElement('script');
im.type = 'importmap';
im.textContent = JSON.stringify(%s);
document.currentScript.after(im);
""";
private String importmap;
@PostConstruct
void init() {
Aggregator aggregator = new Aggregator();
// Add our own mappings
aggregator.addMapping("icons/", "/icons/");
aggregator.addMapping("components/", "/components/");
aggregator.addMapping("fonts/", "/fonts/");
this.importmap = aggregator.aggregateAsJson();
}
@GET
@Path("/dynamic.importmap")
@Produces("application/importmap+json")
public String importMap() {
return this.importmap;
}
@GET
@Path("/dynamic-importmap.js")
@Produces("application/javascript")
public String importMapJson() {
return JAVASCRIPT_CODE.formatted(this.importmap);
}
}

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import {css, LitElement} from 'lit';
import '@vaadin/icon';
import '@vaadin/button';
import '@vaadin/text-field';
import '@vaadin/text-area';
import '@vaadin/form-layout';
import '@vaadin/progress-bar';
import '@vaadin/checkbox';
import '@vaadin/horizontal-layout';
import '@vaadin/grid';
import '@vaadin/grid/vaadin-grid-sort-column.js';
export class DemoChat extends LitElement {
_stripHtml(html) {
const div = document.createElement("div");
div.innerHTML = html;
return div.textContent || div.innerText || "";
}
connectedCallback() {
const chatBot = document.getElementsByTagName("chat-bot")[0];
const protocol = (window.location.protocol === 'https:') ? 'wss' : 'ws';
const socket = new WebSocket(protocol + '://' + window.location.host + '/customer-support-agent');
const that = this;
socket.onmessage = function (event) {
chatBot.hideLastLoading();
// LLM response
let lastMessage;
if (chatBot.messages.length > 0) {
lastMessage = chatBot.messages[chatBot.messages.length - 1];
}
if (lastMessage && lastMessage.sender.name === "Bot" && ! lastMessage.loading) {
if (! lastMessage.msg) {
lastMessage.msg = "";
}
lastMessage.msg += event.data;
let bubbles = chatBot.shadowRoot.querySelectorAll("chat-bubble");
let bubble = bubbles.item(bubbles.length - 1);
if (lastMessage.message) {
bubble.innerHTML = that._stripHtml(lastMessage.message) + lastMessage.msg;
} else {
bubble.innerHTML = lastMessage.msg;
}
chatBot.body.scrollTo({ top: chatBot.body.scrollHeight, behavior: 'smooth' })
} else {
chatBot.sendMessage(event.data, {
right: false,
sender: {
name: "Bot"
}
});
}
}
chatBot.addEventListener("sent", function (e) {
if (e.detail.message.sender.name !== "Bot") {
// User message
const msg = that._stripHtml(e.detail.message.message);
socket.send(msg);
chatBot.sendMessage("", {
right: false,
loading: true
});
}
});
}
}
customElements.define('demo-chat', DemoChat);

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import {LitElement, html, css} from 'lit';
import '@vaadin/icon';
import '@vaadin/button';
import '@vaadin/text-field';
import '@vaadin/text-area';
import '@vaadin/form-layout';
import '@vaadin/progress-bar';
import '@vaadin/checkbox';
import '@vaadin/grid';
import '@vaadin/grid/vaadin-grid-sort-column.js';
export class DemoTitle extends LitElement {
static styles = css`
h2 {
font-family: "Red Hat Mono", monospace;
font-size: 60px;
font-style: normal;
font-variant: normal;
font-weight: 700;
line-height: 26.4px;
color: var(--main-highlight-text-color);
}
.title {
text-align: center;
padding: 1em;
background: var(--main-bg-color);
}
.explanation {
margin-left: auto;
margin-right: auto;
width: 50%;
text-align: justify;
font-size: 20px;
}
.explanation img {
max-width: 60%;
display: block;
float:left;
margin-right: 2em;
margin-top: 1em;
}
`
render() {
return html`
<div class="title">
<h2>Phoenix Technologies</h2>
</div>
<div class="explanation">
<p>Welcome to Phoenix Technologies!</p>
<p>Please click the button on the bottom right to start the conversation
with an LLM-powered customer support agent.</p>
</div>
`
}
}
customElements.define('demo-title', DemoTitle);

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@font-face{font-family:"Red Hat Display";font-style:normal;font-weight:400;font-display:swap;src:url(https://fonts.gstatic.com/s/redhatdisplay/v7/8vIQ7wUr0m80wwYf0QCXZzYzUoTg8z6hR4jNCH5Z.woff2) format("woff2");unicode-range:U+0100-024F,U+0259,U+1E00-1EFF,U+2020,U+20A0-20AB,U+20AD-20CF,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:"Red Hat Display";font-style:normal;font-weight:400;font-display:swap;src:url(https://fonts.gstatic.com/s/redhatdisplay/v7/8vIQ7wUr0m80wwYf0QCXZzYzUoTg_T6hR4jNCA.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+2000-206F,U+2074,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:"Red Hat Display";font-style:normal;font-weight:500;font-display:swap;src:url(https://fonts.gstatic.com/s/redhatdisplay/v7/8vIQ7wUr0m80wwYf0QCXZzYzUoTg8z6hR4jNCH5Z.woff2) format("woff2");unicode-range:U+0100-024F,U+0259,U+1E00-1EFF,U+2020,U+20A0-20AB,U+20AD-20CF,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:"Red Hat Display";font-style:normal;font-weight:500;font-display:swap;src:url(https://fonts.gstatic.com/s/redhatdisplay/v7/8vIQ7wUr0m80wwYf0QCXZzYzUoTg_T6hR4jNCA.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+2000-206F,U+2074,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:"Red Hat Display";font-style:normal;font-weight:700;font-display:swap;src:url(https://fonts.gstatic.com/s/redhatdisplay/v7/8vIQ7wUr0m80wwYf0QCXZzYzUoTg8z6hR4jNCH5Z.woff2) format("woff2");unicode-range:U+0100-024F,U+0259,U+1E00-1EFF,U+2020,U+20A0-20AB,U+20AD-20CF,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:"Red Hat Display";font-style:normal;font-weight:700;font-display:swap;src:url(https://fonts.gstatic.com/s/redhatdisplay/v7/8vIQ7wUr0m80wwYf0QCXZzYzUoTg_T6hR4jNCA.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+2000-206F,U+2074,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:"Red Hat Text";font-style:normal;font-weight:400;font-display:swap;src:url(https://fonts.gstatic.com/s/redhattext/v6/RrQXbohi_ic6B3yVSzGBrMxQZqctMc-JPWCN.woff2) format("woff2");unicode-range:U+0100-024F,U+0259,U+1E00-1EFF,U+2020,U+20A0-20AB,U+20AD-20CF,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:"Red Hat Text";font-style:normal;font-weight:400;font-display:swap;src:url(https://fonts.gstatic.com/s/redhattext/v6/RrQXbohi_ic6B3yVSzGBrMxQaKctMc-JPQ.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+2000-206F,U+2074,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:"Red Hat Text";font-style:normal;font-weight:500;font-display:swap;src:url(https://fonts.gstatic.com/s/redhattext/v6/RrQXbohi_ic6B3yVSzGBrMxQZqctMc-JPWCN.woff2) format("woff2");unicode-range:U+0100-024F,U+0259,U+1E00-1EFF,U+2020,U+20A0-20AB,U+20AD-20CF,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:"Red Hat Text";font-style:normal;font-weight:500;font-display:swap;src:url(https://fonts.gstatic.com/s/redhattext/v6/RrQXbohi_ic6B3yVSzGBrMxQaKctMc-JPQ.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+2000-206F,U+2074,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}/*# sourceMappingURL=red-hat-font.css.map */

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// import './font-awesome-brands.js';
// import './font-awesome-regular.js';
import './font-awesome-solid.js';
// export * from './font-awesome-brands.js';
// export * from './font-awesome-regular.js';
export * from './font-awesome-solid.js';

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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<link rel="shortcut icon" type="image/png" href="favicon.ico">
<script src="/_importmap/dynamic-importmap.js"></script>
<script type="module">
import 'icons/font-awesome.js';
import 'components/demo-title.js';
import 'components/demo-chat.js';
import 'wc-chatbot';
</script>
<link rel="stylesheet" href="fonts/red-hat-font.min.css">
<title>Miles of Smiles</title>
<style>
:root {
--main-bg-color: rgb(246, 242, 242);
--main-highlight-text-color: rgba(237, 98, 128);
}
body {
margin: 0;
width: 100%;
height: 100vh;
font-family: 'Red Hat Text', sans-serif;
overflow: hidden;
display: flex;
flex-direction: column;
justify-content: center;
color: var(--lumo-body-text-color);
background: var(--main-bg-color);
}
chat-bot {
--chatbot-avatar-bg-color: rgba(237, 98, 128);
--chatbot-avatar-margin: 10%;
--chatbot-header-bg-color: rgba(237, 98, 128);
--chatbot-header-title-color: #FFFFFF;
--chatbot-body-bg-color: var(--main-bg-color);
--chatbot-send-button-color: rgba(237, 98, 128);
}
chat-bot::part(chat-bubble) {
--chat-bubble-avatar-color: rgba(237, 98, 128);
--chat-bubble-color: rgba(203, 232, 237, 0.71);
--chat-bubble-right-color: rgb(157, 238, 244);
--chat-bubble-font-color: #333;
--chat-bubble-font-right-color: #333;
--chat-bubble-delay: 0.2s;
}
.middle {
margin-top: 2em;
overflow: hidden;
width: 50%;
margin-left: auto;
margin-right: auto;
display: flex;
}
</style>
</head>
<body>
<demo-title></demo-title>
<div class="middle">
<demo-chat>
<chat-bot></chat-bot>
</demo-chat>
</div>
</body>
</html>

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quarkus:
langchain4j:
openai:
api-key: #PUT_YOUR_TOKEN_HERE
base-url: https://inference-llama33-70b-maas.apps.ai.kvant.cloud/v1/
timeout: 60s
chat-model:
model-name: inference-llama33-70b
temperature: 1.0
#max-tokens: 1000
#frequency-penalty: 2
frequency-penalty: 0
log-requests: true
log-responses: true

24
demo-05/README.md Normal file
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Demo 05 - RAG Part 1
===============================================
Retrieval Augmented Generation (RAG) is a way to extend the knowledge of the LLM used in the AI service.
The RAG pattern is composed of two parts:
* Ingestion: This is the part that stores data in the knowledge base.
* Augmentation: This is the part that adds the retrieved information to the input of the LLM.
# Configuring EasyRag
To configure EasyRag: In the src/main/resources/application.properties file, we have the following configuration:
```
quarkus.langchain4j.easy-rag.path=src/main/resources/rag
quarkus.langchain4j.easy-rag.max-segment-size=100
quarkus.langchain4j.easy-rag.max-overlap-size=25
quarkus.langchain4j.easy-rag.max-results=3
```
* `quarkus.langchain4j.easy-rag.path`: The path to the directory containing the data files.
* `quarkus.langchain4j.easy-rag.max-segment-size`: The maximum number of tokens in a segment. Each document is
split into segments (chunks) to be ingested by the LLM. This parameter defines the maximum number of tokens in a segment.
* `quarkus.langchain4j.easy-rag.max-overlap-size`: The maximum number of tokens to overlap between two segments.
That allows the LLM to have a context between two segments.
* `quarkus.langchain4j.easy-rag.max-results`: The maximum number of results to return when querying the knowledge base.

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demo-05/pom.xml Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>ch.phoenixtechnologies</groupId>
<artifactId>ai-lc4j-workshop</artifactId>
<version>0.0.1-SNAPSHOT</version>
</parent>
<artifactId>demo-05</artifactId>
<properties>
<java.version>21</java.version>
<maven.compiler.source>${java.version}</maven.compiler.source>
<maven.compiler.target>${java.version}</maven.compiler.target>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<!-- Plugin versions -->
<compiler-plugin.version>3.14.0</compiler-plugin.version>
<enforcer-plugin.version>3.5.0</enforcer-plugin.version>
<surefire-plugin.version>3.5.2</surefire-plugin.version>
<spotless-maven-plugin.version>2.44.3</spotless-maven-plugin.version>
<palantir-java-format.version>2.50.0</palantir-java-format.version>
<release-plugin.version>3.1.1</release-plugin.version>
<!-- Quarkus version -->
<quarkus.platform.artifact-id>quarkus-bom</quarkus.platform.artifact-id>
<quarkus.platform.group-id>io.quarkus.platform</quarkus.platform.group-id>
<quarkus.platform.version>3.19.2</quarkus.platform.version>
<!-- LangChain4j-->
<quarkus-langchain4j.version>0.25.0</quarkus-langchain4j.version>
<!-- Test dependency versions -->
<assertj.version>3.27.3</assertj.version>
</properties>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>${quarkus.platform.group-id}</groupId>
<artifactId>${quarkus.platform.artifact-id}</artifactId>
<version>${quarkus.platform.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
<dependency>
<groupId>io.quarkiverse.langchain4j</groupId>
<artifactId>quarkus-langchain4j-bom</artifactId>
<version>${quarkus-langchain4j.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<dependencies>
<dependency>
<groupId>io.quarkus</groupId>
<artifactId>quarkus-config-yaml</artifactId>
</dependency>
<dependency>
<groupId>io.quarkiverse.langchain4j</groupId>
<artifactId>quarkus-langchain4j-openai</artifactId>
</dependency>
<dependency>
<groupId>io.quarkiverse.langchain4j</groupId>
<artifactId>quarkus-langchain4j-easy-rag</artifactId>
</dependency>
<dependency>
<groupId>io.quarkus</groupId>
<artifactId>quarkus-rest</artifactId>
</dependency>
<dependency>
<groupId>io.quarkus</groupId>
<artifactId>quarkus-websockets-next</artifactId>
</dependency>
<!-- UI -->
<dependency>
<groupId>org.mvnpm</groupId>
<artifactId>importmap</artifactId>
<version>1.0.8</version>
</dependency>
<dependency>
<groupId>org.mvnpm.at.mvnpm</groupId>
<artifactId>vaadin-webcomponents</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.mvnpm</groupId>
<artifactId>es-module-shims</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.mvnpm</groupId>
<artifactId>wc-chatbot</artifactId>
<version>0.2.0</version>
<scope>runtime</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>${quarkus.platform.group-id}</groupId>
<artifactId>quarkus-maven-plugin</artifactId>
<version>${quarkus.platform.version}</version>
<extensions>true</extensions>
<executions>
<execution>
<goals>
<goal>build</goal>
<goal>generate-code</goal>
<goal>generate-code-tests</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>${compiler-plugin.version}</version>
<configuration>
<compilerArgs>
<arg>-parameters</arg>
</compilerArgs>
<release>${java.version}</release>
</configuration>
</plugin>
<plugin>
<artifactId>maven-surefire-plugin</artifactId>
<version>${surefire-plugin.version}</version>
<configuration>
<systemPropertyVariables>
<java.util.logging.manager>org.jboss.logmanager.LogManager</java.util.logging.manager>
<maven.home>${maven.home}</maven.home>
</systemPropertyVariables>
</configuration>
</plugin>
<plugin>
<artifactId>maven-enforcer-plugin</artifactId>
<version>${enforcer-plugin.version}</version>
<executions>
<execution>
<id>ban-bad-log4j-versions</id>
<phase>validate</phase>
<goals>
<goal>enforce</goal>
</goals>
<configuration>
<rules>
<bannedDependencies>
<excludes>
<exclude>org.apache.logging.log4j:log4j-core:(,2.17.1)</exclude>
</excludes>
</bannedDependencies>
</rules>
<fail>true</fail>
</configuration>
</execution>
</executions>
</plugin>
<plugin>
<groupId>com.diffplug.spotless</groupId>
<artifactId>spotless-maven-plugin</artifactId>
<version>${spotless-maven-plugin.version}</version>
<executions>
<execution>
<goals>
<goal>check</goal>
</goals>
<phase>compile</phase>
</execution>
</executions>
<configuration>
<java>
<removeUnusedImports />
<palantirJavaFormat>
<version>${palantir-java-format.version}</version>
<style>PALANTIR</style>
<formatJavadoc>false</formatJavadoc>
</palantirJavaFormat>
</java>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-release-plugin</artifactId>
<version>${release-plugin.version}</version>
<configuration>
<tagNameFormat>@{project.version}</tagNameFormat>
<checkModificationExcludes>mvnw</checkModificationExcludes>
<scmReleaseCommitComment>chore: release @{releaseLabel}</scmReleaseCommitComment>
<scmDevelopmentCommitComment>chore: prepare for next development iteration [skip ci]</scmDevelopmentCommitComment>
</configuration>
</plugin>
</plugins>
</build>
</project>

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package ch.phoenixtechnologies.lc4j.openai.runtime.config;
import io.smallrye.config.ConfigMapping;
@ConfigMapping(prefix = "l4j.custom-embedding-model")
public interface CustomEmbeddingModelConfig {
String baseUrl();
String apiKey();
String modelName();
}

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package ch.phoenixtechnologies.lc4j.openai.runtime.config;
import dev.langchain4j.model.embedding.EmbeddingModel;
import dev.langchain4j.model.openai.OpenAiEmbeddingModel;
import jakarta.enterprise.context.ApplicationScoped;
import jakarta.enterprise.inject.Produces;
@ApplicationScoped
public class CustomEmbeddingModelProducer {
private final CustomEmbeddingModelConfig config;
public CustomEmbeddingModelProducer(CustomEmbeddingModelConfig config) {
this.config = config;
}
@Produces
public EmbeddingModel getModel() {
return OpenAiEmbeddingModel.builder()
.apiKey(config.apiKey())
.baseUrl(config.baseUrl())
.modelName(config.modelName())
.logRequests(true)
.logResponses(true)
.build();
}
}

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package ch.phoenixtechnologies.lc4j.workshop;
import dev.langchain4j.service.SystemMessage;
import io.quarkiverse.langchain4j.RegisterAiService;
import io.smallrye.mutiny.Multi;
import jakarta.enterprise.context.SessionScoped;
@SessionScoped
@RegisterAiService
public interface CustomerSupportAgent {
@SystemMessage(
"""
You are a customer support agent of a IT company 'Phoenix Technologies AG based in Switzerland.
You are friendly, polite and concise.
If the question is unrelated to IT services, you should politely redirect the customer to the right department.
""")
Multi<String> chat(String userMessage);
}

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package ch.phoenixtechnologies.lc4j.workshop;
import io.quarkus.websockets.next.OnOpen;
import io.quarkus.websockets.next.OnTextMessage;
import io.quarkus.websockets.next.WebSocket;
import io.smallrye.mutiny.Multi;
@WebSocket(path = "/customer-support-agent")
public class CustomerSupportAgentWebSocket {
private final CustomerSupportAgent agent;
public CustomerSupportAgentWebSocket(CustomerSupportAgent agent) {
this.agent = agent;
}
@OnOpen
public String onOpen() {
return "Welcome to Phoenix Technologies AI!";
}
@OnTextMessage
public Multi<String> onTextMessage(String message) {
return agent.chat(message);
}
}

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package ch.phoenixtechnologies.lc4j.workshop;
import jakarta.annotation.PostConstruct;
import jakarta.enterprise.context.ApplicationScoped;
import jakarta.ws.rs.GET;
import jakarta.ws.rs.Path;
import jakarta.ws.rs.Produces;
import org.mvnpm.importmap.Aggregator;
@ApplicationScoped
@Path("/_importmap")
public class ImportmapResource {
private static final String JAVASCRIPT_CODE =
"""
const im = document.createElement('script');
im.type = 'importmap';
im.textContent = JSON.stringify(%s);
document.currentScript.after(im);
""";
private String importmap;
@PostConstruct
void init() {
Aggregator aggregator = new Aggregator();
// Add our own mappings
aggregator.addMapping("icons/", "/icons/");
aggregator.addMapping("components/", "/components/");
aggregator.addMapping("fonts/", "/fonts/");
this.importmap = aggregator.aggregateAsJson();
}
@GET
@Path("/dynamic.importmap")
@Produces("application/importmap+json")
public String importMap() {
return this.importmap;
}
@GET
@Path("/dynamic-importmap.js")
@Produces("application/javascript")
public String importMapJson() {
return JAVASCRIPT_CODE.formatted(this.importmap);
}
}

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import {css, LitElement} from 'lit';
import '@vaadin/icon';
import '@vaadin/button';
import '@vaadin/text-field';
import '@vaadin/text-area';
import '@vaadin/form-layout';
import '@vaadin/progress-bar';
import '@vaadin/checkbox';
import '@vaadin/horizontal-layout';
import '@vaadin/grid';
import '@vaadin/grid/vaadin-grid-sort-column.js';
export class DemoChat extends LitElement {
_stripHtml(html) {
const div = document.createElement("div");
div.innerHTML = html;
return div.textContent || div.innerText || "";
}
connectedCallback() {
const chatBot = document.getElementsByTagName("chat-bot")[0];
const protocol = (window.location.protocol === 'https:') ? 'wss' : 'ws';
const socket = new WebSocket(protocol + '://' + window.location.host + '/customer-support-agent');
const that = this;
socket.onmessage = function (event) {
chatBot.hideLastLoading();
// LLM response
let lastMessage;
if (chatBot.messages.length > 0) {
lastMessage = chatBot.messages[chatBot.messages.length - 1];
}
if (lastMessage && lastMessage.sender.name === "Bot" && ! lastMessage.loading) {
if (! lastMessage.msg) {
lastMessage.msg = "";
}
lastMessage.msg += event.data;
let bubbles = chatBot.shadowRoot.querySelectorAll("chat-bubble");
let bubble = bubbles.item(bubbles.length - 1);
if (lastMessage.message) {
bubble.innerHTML = that._stripHtml(lastMessage.message) + lastMessage.msg;
} else {
bubble.innerHTML = lastMessage.msg;
}
chatBot.body.scrollTo({ top: chatBot.body.scrollHeight, behavior: 'smooth' })
} else {
chatBot.sendMessage(event.data, {
right: false,
sender: {
name: "Bot"
}
});
}
}
chatBot.addEventListener("sent", function (e) {
if (e.detail.message.sender.name !== "Bot") {
// User message
const msg = that._stripHtml(e.detail.message.message);
socket.send(msg);
chatBot.sendMessage("", {
right: false,
loading: true
});
}
});
}
}
customElements.define('demo-chat', DemoChat);

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import {LitElement, html, css} from 'lit';
import '@vaadin/icon';
import '@vaadin/button';
import '@vaadin/text-field';
import '@vaadin/text-area';
import '@vaadin/form-layout';
import '@vaadin/progress-bar';
import '@vaadin/checkbox';
import '@vaadin/grid';
import '@vaadin/grid/vaadin-grid-sort-column.js';
export class DemoTitle extends LitElement {
static styles = css`
h2 {
font-family: "Red Hat Mono", monospace;
font-size: 60px;
font-style: normal;
font-variant: normal;
font-weight: 700;
line-height: 26.4px;
color: var(--main-highlight-text-color);
}
.title {
text-align: center;
padding: 1em;
background: var(--main-bg-color);
}
.explanation {
margin-left: auto;
margin-right: auto;
width: 50%;
text-align: justify;
font-size: 20px;
}
.explanation img {
max-width: 60%;
display: block;
float:left;
margin-right: 2em;
margin-top: 1em;
}
`
render() {
return html`
<div class="title">
<h2>Phoenix Technologies</h2>
</div>
<div class="explanation">
<p>Welcome to Phoenix Technologies!</p>
<p>Please click the button on the bottom right to start the conversation
with an LLM-powered customer support agent.</p>
</div>
`
}
}
customElements.define('demo-title', DemoTitle);

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@font-face{font-family:"Red Hat Display";font-style:normal;font-weight:400;font-display:swap;src:url(https://fonts.gstatic.com/s/redhatdisplay/v7/8vIQ7wUr0m80wwYf0QCXZzYzUoTg8z6hR4jNCH5Z.woff2) format("woff2");unicode-range:U+0100-024F,U+0259,U+1E00-1EFF,U+2020,U+20A0-20AB,U+20AD-20CF,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:"Red Hat Display";font-style:normal;font-weight:400;font-display:swap;src:url(https://fonts.gstatic.com/s/redhatdisplay/v7/8vIQ7wUr0m80wwYf0QCXZzYzUoTg_T6hR4jNCA.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+2000-206F,U+2074,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:"Red Hat Display";font-style:normal;font-weight:500;font-display:swap;src:url(https://fonts.gstatic.com/s/redhatdisplay/v7/8vIQ7wUr0m80wwYf0QCXZzYzUoTg8z6hR4jNCH5Z.woff2) format("woff2");unicode-range:U+0100-024F,U+0259,U+1E00-1EFF,U+2020,U+20A0-20AB,U+20AD-20CF,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:"Red Hat Display";font-style:normal;font-weight:500;font-display:swap;src:url(https://fonts.gstatic.com/s/redhatdisplay/v7/8vIQ7wUr0m80wwYf0QCXZzYzUoTg_T6hR4jNCA.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+2000-206F,U+2074,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:"Red Hat Display";font-style:normal;font-weight:700;font-display:swap;src:url(https://fonts.gstatic.com/s/redhatdisplay/v7/8vIQ7wUr0m80wwYf0QCXZzYzUoTg8z6hR4jNCH5Z.woff2) format("woff2");unicode-range:U+0100-024F,U+0259,U+1E00-1EFF,U+2020,U+20A0-20AB,U+20AD-20CF,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:"Red Hat Display";font-style:normal;font-weight:700;font-display:swap;src:url(https://fonts.gstatic.com/s/redhatdisplay/v7/8vIQ7wUr0m80wwYf0QCXZzYzUoTg_T6hR4jNCA.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+2000-206F,U+2074,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:"Red Hat Text";font-style:normal;font-weight:400;font-display:swap;src:url(https://fonts.gstatic.com/s/redhattext/v6/RrQXbohi_ic6B3yVSzGBrMxQZqctMc-JPWCN.woff2) format("woff2");unicode-range:U+0100-024F,U+0259,U+1E00-1EFF,U+2020,U+20A0-20AB,U+20AD-20CF,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:"Red Hat Text";font-style:normal;font-weight:400;font-display:swap;src:url(https://fonts.gstatic.com/s/redhattext/v6/RrQXbohi_ic6B3yVSzGBrMxQaKctMc-JPQ.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+2000-206F,U+2074,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:"Red Hat Text";font-style:normal;font-weight:500;font-display:swap;src:url(https://fonts.gstatic.com/s/redhattext/v6/RrQXbohi_ic6B3yVSzGBrMxQZqctMc-JPWCN.woff2) format("woff2");unicode-range:U+0100-024F,U+0259,U+1E00-1EFF,U+2020,U+20A0-20AB,U+20AD-20CF,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:"Red Hat Text";font-style:normal;font-weight:500;font-display:swap;src:url(https://fonts.gstatic.com/s/redhattext/v6/RrQXbohi_ic6B3yVSzGBrMxQaKctMc-JPQ.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+2000-206F,U+2074,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}/*# sourceMappingURL=red-hat-font.css.map */

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// import './font-awesome-brands.js';
// import './font-awesome-regular.js';
import './font-awesome-solid.js';
// export * from './font-awesome-brands.js';
// export * from './font-awesome-regular.js';
export * from './font-awesome-solid.js';

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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<link rel="shortcut icon" type="image/png" href="favicon.ico">
<script src="/_importmap/dynamic-importmap.js"></script>
<script type="module">
import 'icons/font-awesome.js';
import 'components/demo-title.js';
import 'components/demo-chat.js';
import 'wc-chatbot';
</script>
<link rel="stylesheet" href="fonts/red-hat-font.min.css">
<title>Miles of Smiles</title>
<style>
:root {
--main-bg-color: rgb(246, 242, 242);
--main-highlight-text-color: rgba(237, 98, 128);
}
body {
margin: 0;
width: 100%;
height: 100vh;
font-family: 'Red Hat Text', sans-serif;
overflow: hidden;
display: flex;
flex-direction: column;
justify-content: center;
color: var(--lumo-body-text-color);
background: var(--main-bg-color);
}
chat-bot {
--chatbot-avatar-bg-color: rgba(237, 98, 128);
--chatbot-avatar-margin: 10%;
--chatbot-header-bg-color: rgba(237, 98, 128);
--chatbot-header-title-color: #FFFFFF;
--chatbot-body-bg-color: var(--main-bg-color);
--chatbot-send-button-color: rgba(237, 98, 128);
}
chat-bot::part(chat-bubble) {
--chat-bubble-avatar-color: rgba(237, 98, 128);
--chat-bubble-color: rgba(203, 232, 237, 0.71);
--chat-bubble-right-color: rgb(157, 238, 244);
--chat-bubble-font-color: #333;
--chat-bubble-font-right-color: #333;
--chat-bubble-delay: 0.2s;
}
.middle {
margin-top: 2em;
overflow: hidden;
width: 50%;
margin-left: auto;
margin-right: auto;
display: flex;
}
</style>
</head>
<body>
<demo-title></demo-title>
<div class="middle">
<demo-chat>
<chat-bot></chat-bot>
</demo-chat>
</div>
</body>
</html>

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quarkus:
langchain4j:
openai:
api-key: #PUT_YOUR_TOKEN_HERE
base-url: https://inference-llama33-70b-maas.apps.ai.kvant.cloud/v1/
timeout: 60s
chat-model:
model-name: inference-llama33-70b
#model-name: gpt-4o-mini
temperature: 1.0
#max-tokens: 1000
#frequency-penalty: 2
frequency-penalty: 0
log-requests: true
log-responses: true
easy-rag:
max-segment-size: 100
max-overlap-size: 25
max-results: 3
path: src/main/resources/rag
reuse-embeddings:
enabled: true
l4j:
custom-embedding-model:
model-name: inference-multilingual-e5l
base-url: https://inference-multilingual-e5l-maas.apps.ai.kvant.cloud/v1
api-key: #PUT_YOUR_TOKEN_HERE

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Phoenix Technologies IT Services Terms of Use
1. Introduction
These Terms of Service (“Terms”) govern the access or use by you, an individual, from within any country in the world, of applications, websites, content, products, and services (“Services”) made available by Phoenix Technologies IT Services, a company registered in the United States of America.
2. The Services
Phoenix Technologies provides IT Services to the end user. We reserve the right to temporarily or permanently discontinue the Services at any time and are not liable for any modification, suspension or discontinuation of the Services.
3. Bookings
3.1 Users may make a booking through our website or mobile application.
3.2 You must provide accurate, current and complete information during the reservation process. You are responsible for all charges incurred under your account.
3.3 All bookings are subject to IT service availability.
4. Cancellation Policy
4.1 Reservations can be cancelled up to 11 days prior to the start of the booking period.
4.2 If the booking period is less than 4 days, cancellations are not permitted.
5. Use of Service
5.1 All services rented from Phoenix Technologies must not be used:
for any illegal purpose or in connection with any criminal offense.
for using in profit organization.
for selling it to a third party.
outside of Switzerland or EU.
6. Liability
6.1 Users will be held liable for any damage, loss, or theft that occurs during the rental period.
6.2 We do not accept liability for any indirect or consequential loss, damage, or expense including but not limited to loss of profits.
7. Governing Law
These terms will be governed by and construed in accordance with the laws of the Switzerland, and any disputes relating to these terms will be subject to the exclusive jurisdiction of the courts of Switzerland.
8. Changes to These Terms
We may revise these terms of use at any time by amending this page. You are expected to check this page from time to time to take notice of any changes we made.
9. Acceptance of These Terms
By using the Services, you acknowledge that you have read and understand these Terms and agree to be bound by them.
If you do not agree to these Terms, please do not use or access our Services.

22
demo-06/README.md Normal file
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Demo 06 - RAG Part 2
===============================================
Retrieval Augmented Generation (RAG) is a way to extend the knowledge of the LLM used in the AI service.
The RAG pattern is composed of two parts:
* Ingestion: This is the part that stores data in the knowledge base.
* Augmentation: This is the part that adds the retrieved information to the input of the LLM.
# Embedding model
One of the core components of the RAG pattern is the embedding model. The embedding model is used to transform the
text into numerical vectors. These vectors are used to compare the text and find the most relevant segments.
# Vector store
In the previous step, we used an in memory store. Now we will use a persistent store to keep the embeddings between restarts.
# Ingesting documents into the vector store
While you are editing the `src/main/resources/application.properties` file, add the following configuration:
```
rag.location=src/main/resources/rag
```

210
demo-06/pom.xml Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>ch.phoenixtechnologies</groupId>
<artifactId>ai-lc4j-workshop</artifactId>
<version>0.0.1-SNAPSHOT</version>
</parent>
<artifactId>demo-06</artifactId>
<properties>
<java.version>21</java.version>
<maven.compiler.source>${java.version}</maven.compiler.source>
<maven.compiler.target>${java.version}</maven.compiler.target>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<!-- Plugin versions -->
<compiler-plugin.version>3.14.0</compiler-plugin.version>
<enforcer-plugin.version>3.5.0</enforcer-plugin.version>
<surefire-plugin.version>3.5.2</surefire-plugin.version>
<spotless-maven-plugin.version>2.44.3</spotless-maven-plugin.version>
<palantir-java-format.version>2.50.0</palantir-java-format.version>
<release-plugin.version>3.1.1</release-plugin.version>
<!-- Quarkus version -->
<quarkus.platform.artifact-id>quarkus-bom</quarkus.platform.artifact-id>
<quarkus.platform.group-id>io.quarkus.platform</quarkus.platform.group-id>
<quarkus.platform.version>3.19.2</quarkus.platform.version>
<!-- LangChain4j-->
<quarkus-langchain4j.version>0.25.0</quarkus-langchain4j.version>
<!-- Test dependency versions -->
<assertj.version>3.27.3</assertj.version>
</properties>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>${quarkus.platform.group-id}</groupId>
<artifactId>${quarkus.platform.artifact-id}</artifactId>
<version>${quarkus.platform.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
<dependency>
<groupId>io.quarkiverse.langchain4j</groupId>
<artifactId>quarkus-langchain4j-bom</artifactId>
<version>${quarkus-langchain4j.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<dependencies>
<dependency>
<groupId>io.quarkus</groupId>
<artifactId>quarkus-config-yaml</artifactId>
</dependency>
<!-- langchain4j -->
<dependency>
<groupId>io.quarkiverse.langchain4j</groupId>
<artifactId>quarkus-langchain4j-openai</artifactId>
</dependency>
<dependency>
<groupId>io.quarkiverse.langchain4j</groupId>
<artifactId>quarkus-langchain4j-pgvector</artifactId>
</dependency>
<dependency>
<groupId>dev.langchain4j</groupId>
<artifactId>langchain4j-embeddings</artifactId>
</dependency>
<dependency>
<groupId>io.quarkus</groupId>
<artifactId>quarkus-rest</artifactId>
</dependency>
<dependency>
<groupId>io.quarkus</groupId>
<artifactId>quarkus-websockets-next</artifactId>
</dependency>
<!-- UI -->
<dependency>
<groupId>org.mvnpm</groupId>
<artifactId>importmap</artifactId>
<version>1.0.8</version>
</dependency>
<dependency>
<groupId>org.mvnpm.at.mvnpm</groupId>
<artifactId>vaadin-webcomponents</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.mvnpm</groupId>
<artifactId>es-module-shims</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.mvnpm</groupId>
<artifactId>wc-chatbot</artifactId>
<version>0.2.0</version>
<scope>runtime</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>${quarkus.platform.group-id}</groupId>
<artifactId>quarkus-maven-plugin</artifactId>
<version>${quarkus.platform.version}</version>
<extensions>true</extensions>
<executions>
<execution>
<goals>
<goal>build</goal>
<goal>generate-code</goal>
<goal>generate-code-tests</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>${compiler-plugin.version}</version>
<configuration>
<compilerArgs>
<arg>-parameters</arg>
</compilerArgs>
<release>${java.version}</release>
</configuration>
</plugin>
<plugin>
<artifactId>maven-surefire-plugin</artifactId>
<version>${surefire-plugin.version}</version>
<configuration>
<systemPropertyVariables>
<java.util.logging.manager>org.jboss.logmanager.LogManager</java.util.logging.manager>
<maven.home>${maven.home}</maven.home>
</systemPropertyVariables>
</configuration>
</plugin>
<plugin>
<artifactId>maven-enforcer-plugin</artifactId>
<version>${enforcer-plugin.version}</version>
<executions>
<execution>
<id>ban-bad-log4j-versions</id>
<phase>validate</phase>
<goals>
<goal>enforce</goal>
</goals>
<configuration>
<rules>
<bannedDependencies>
<excludes>
<exclude>org.apache.logging.log4j:log4j-core:(,2.17.1)</exclude>
</excludes>
</bannedDependencies>
</rules>
<fail>true</fail>
</configuration>
</execution>
</executions>
</plugin>
<plugin>
<groupId>com.diffplug.spotless</groupId>
<artifactId>spotless-maven-plugin</artifactId>
<version>${spotless-maven-plugin.version}</version>
<executions>
<execution>
<goals>
<goal>check</goal>
</goals>
<phase>compile</phase>
</execution>
</executions>
<configuration>
<java>
<removeUnusedImports />
<palantirJavaFormat>
<version>${palantir-java-format.version}</version>
<style>PALANTIR</style>
<formatJavadoc>false</formatJavadoc>
</palantirJavaFormat>
</java>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-release-plugin</artifactId>
<version>${release-plugin.version}</version>
<configuration>
<tagNameFormat>@{project.version}</tagNameFormat>
<checkModificationExcludes>mvnw</checkModificationExcludes>
<scmReleaseCommitComment>chore: release @{releaseLabel}</scmReleaseCommitComment>
<scmDevelopmentCommitComment>chore: prepare for next development iteration [skip ci]</scmDevelopmentCommitComment>
</configuration>
</plugin>
</plugins>
</build>
</project>

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package ch.phoenixtechnologies.lc4j.openai.runtime.config;
import io.smallrye.config.ConfigMapping;
@ConfigMapping(prefix = "l4j.custom-embedding-model")
public interface CustomEmbeddingModelConfig {
String baseUrl();
String apiKey();
String modelName();
boolean logRequests();
boolean logResponses();
// int dimensions();
}

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package ch.phoenixtechnologies.lc4j.openai.runtime.config;
import dev.langchain4j.model.embedding.EmbeddingModel;
import dev.langchain4j.model.openai.OpenAiEmbeddingModel;
import jakarta.enterprise.context.ApplicationScoped;
import jakarta.enterprise.inject.Produces;
@ApplicationScoped
public class CustomEmbeddingModelProducer {
private final CustomEmbeddingModelConfig config;
public CustomEmbeddingModelProducer(CustomEmbeddingModelConfig config) {
this.config = config;
}
@Produces
public EmbeddingModel getModel() {
return OpenAiEmbeddingModel.builder()
.apiKey(config.apiKey())
.baseUrl(config.baseUrl())
.modelName(config.modelName())
.logRequests(config.logRequests())
.logResponses(config.logResponses())
// .dimensions(config.dimensions())
.build();
}
}

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package ch.phoenixtechnologies.lc4j.workshop;
import dev.langchain4j.service.SystemMessage;
import io.quarkiverse.langchain4j.RegisterAiService;
import io.smallrye.mutiny.Multi;
import jakarta.enterprise.context.SessionScoped;
@SessionScoped
@RegisterAiService
public interface CustomerSupportAgent {
@SystemMessage(
"""
You are a customer support agent of a IT company 'Phoenix Technologies AG based in Switzerland.
You are friendly, polite and concise.
If the question is unrelated to IT services, you should politely redirect the customer to the right department.
""")
Multi<String> chat(String userMessage);
}

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package ch.phoenixtechnologies.lc4j.workshop;
import io.quarkus.websockets.next.OnOpen;
import io.quarkus.websockets.next.OnTextMessage;
import io.quarkus.websockets.next.WebSocket;
import io.smallrye.mutiny.Multi;
@WebSocket(path = "/customer-support-agent")
public class CustomerSupportAgentWebSocket {
private final CustomerSupportAgent agent;
public CustomerSupportAgentWebSocket(CustomerSupportAgent agent) {
this.agent = agent;
}
@OnOpen
public String onOpen() {
return "Welcome to Phoenix Technologies AI!";
}
@OnTextMessage
public Multi<String> onTextMessage(String message) {
return agent.chat(message);
}
}

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package ch.phoenixtechnologies.lc4j.workshop;
import jakarta.annotation.PostConstruct;
import jakarta.enterprise.context.ApplicationScoped;
import jakarta.ws.rs.GET;
import jakarta.ws.rs.Path;
import jakarta.ws.rs.Produces;
import org.mvnpm.importmap.Aggregator;
@ApplicationScoped
@Path("/_importmap")
public class ImportmapResource {
private static final String JAVASCRIPT_CODE =
"""
const im = document.createElement('script');
im.type = 'importmap';
im.textContent = JSON.stringify(%s);
document.currentScript.after(im);
""";
private String importmap;
@PostConstruct
void init() {
Aggregator aggregator = new Aggregator();
// Add our own mappings
aggregator.addMapping("icons/", "/icons/");
aggregator.addMapping("components/", "/components/");
aggregator.addMapping("fonts/", "/fonts/");
this.importmap = aggregator.aggregateAsJson();
}
@GET
@Path("/dynamic.importmap")
@Produces("application/importmap+json")
public String importMap() {
return this.importmap;
}
@GET
@Path("/dynamic-importmap.js")
@Produces("application/javascript")
public String importMapJson() {
return JAVASCRIPT_CODE.formatted(this.importmap);
}
}

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package ch.phoenixtechnologies.lc4j.workshop;
import static dev.langchain4j.data.document.splitter.DocumentSplitters.recursive;
import dev.langchain4j.data.document.Document;
import dev.langchain4j.data.document.loader.FileSystemDocumentLoader;
import dev.langchain4j.model.embedding.EmbeddingModel;
import dev.langchain4j.model.embedding.onnx.HuggingFaceTokenizer;
import dev.langchain4j.store.embedding.EmbeddingStore;
import dev.langchain4j.store.embedding.EmbeddingStoreIngestor;
import io.quarkus.logging.Log;
import io.quarkus.runtime.StartupEvent;
import jakarta.enterprise.context.ApplicationScoped;
import jakarta.enterprise.event.Observes;
import java.nio.file.Path;
import java.util.List;
import org.eclipse.microprofile.config.inject.ConfigProperty;
@ApplicationScoped
public class RagIngestion {
/**
* Ingests the documents from the given location into the embedding store.
*
* @param ev the startup event to trigger the ingestion when the application starts
* @param store the embedding store the embedding store (PostGreSQL in our case)
* @param embeddingModel the embedding model to use for the embedding (BGE-Small-EN-Quantized in our case)
* @param documents the location of the documents to ingest
*/
public void ingest(
@Observes StartupEvent ev,
EmbeddingStore store,
EmbeddingModel embeddingModel,
@ConfigProperty(name = "rag.location") Path documents) {
store.removeAll(); // cleanup the store to start fresh (just for demo purposes)
List<Document> list = FileSystemDocumentLoader.loadDocumentsRecursively(documents);
EmbeddingStoreIngestor ingestor = EmbeddingStoreIngestor.builder()
.embeddingStore(store)
.embeddingModel(embeddingModel)
.documentSplitter(recursive(100, 25, new HuggingFaceTokenizer()))
.build();
ingestor.ingest(list);
Log.info("Documents ingested successfully");
}
}

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package ch.phoenixtechnologies.lc4j.workshop;
import dev.langchain4j.data.message.UserMessage;
import dev.langchain4j.model.embedding.EmbeddingModel;
import dev.langchain4j.rag.DefaultRetrievalAugmentor;
import dev.langchain4j.rag.RetrievalAugmentor;
import dev.langchain4j.rag.content.retriever.EmbeddingStoreContentRetriever;
import dev.langchain4j.store.embedding.EmbeddingStore;
import jakarta.enterprise.context.ApplicationScoped;
import jakarta.enterprise.inject.Produces;
public class RagRetriever {
@Produces
@ApplicationScoped
public RetrievalAugmentor create(EmbeddingStore store, EmbeddingModel model) {
var contentRetriever = EmbeddingStoreContentRetriever.builder()
.embeddingModel(model)
.embeddingStore(store)
.maxResults(3)
.build();
return DefaultRetrievalAugmentor.builder()
.contentRetriever(contentRetriever)
.contentInjector((contents, userMessage) -> {
StringBuffer prompt = new StringBuffer(userMessage.singleText());
//prompt.append("\nPlease, only use the following information:\n");
contents.forEach(content -> prompt.append("- ")
.append(content.textSegment().text())
.append("\n"));
return new UserMessage(prompt.toString());
})
.build();
}
}

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import {css, LitElement} from 'lit';
import '@vaadin/icon';
import '@vaadin/button';
import '@vaadin/text-field';
import '@vaadin/text-area';
import '@vaadin/form-layout';
import '@vaadin/progress-bar';
import '@vaadin/checkbox';
import '@vaadin/horizontal-layout';
import '@vaadin/grid';
import '@vaadin/grid/vaadin-grid-sort-column.js';
export class DemoChat extends LitElement {
_stripHtml(html) {
const div = document.createElement("div");
div.innerHTML = html;
return div.textContent || div.innerText || "";
}
connectedCallback() {
const chatBot = document.getElementsByTagName("chat-bot")[0];
const protocol = (window.location.protocol === 'https:') ? 'wss' : 'ws';
const socket = new WebSocket(protocol + '://' + window.location.host + '/customer-support-agent');
const that = this;
socket.onmessage = function (event) {
chatBot.hideLastLoading();
// LLM response
let lastMessage;
if (chatBot.messages.length > 0) {
lastMessage = chatBot.messages[chatBot.messages.length - 1];
}
if (lastMessage && lastMessage.sender.name === "Bot" && ! lastMessage.loading) {
if (! lastMessage.msg) {
lastMessage.msg = "";
}
lastMessage.msg += event.data;
let bubbles = chatBot.shadowRoot.querySelectorAll("chat-bubble");
let bubble = bubbles.item(bubbles.length - 1);
if (lastMessage.message) {
bubble.innerHTML = that._stripHtml(lastMessage.message) + lastMessage.msg;
} else {
bubble.innerHTML = lastMessage.msg;
}
chatBot.body.scrollTo({ top: chatBot.body.scrollHeight, behavior: 'smooth' })
} else {
chatBot.sendMessage(event.data, {
right: false,
sender: {
name: "Bot"
}
});
}
}
chatBot.addEventListener("sent", function (e) {
if (e.detail.message.sender.name !== "Bot") {
// User message
const msg = that._stripHtml(e.detail.message.message);
socket.send(msg);
chatBot.sendMessage("", {
right: false,
loading: true
});
}
});
}
}
customElements.define('demo-chat', DemoChat);

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import {LitElement, html, css} from 'lit';
import '@vaadin/icon';
import '@vaadin/button';
import '@vaadin/text-field';
import '@vaadin/text-area';
import '@vaadin/form-layout';
import '@vaadin/progress-bar';
import '@vaadin/checkbox';
import '@vaadin/grid';
import '@vaadin/grid/vaadin-grid-sort-column.js';
export class DemoTitle extends LitElement {
static styles = css`
h2 {
font-family: "Red Hat Mono", monospace;
font-size: 60px;
font-style: normal;
font-variant: normal;
font-weight: 700;
line-height: 26.4px;
color: var(--main-highlight-text-color);
}
.title {
text-align: center;
padding: 1em;
background: var(--main-bg-color);
}
.explanation {
margin-left: auto;
margin-right: auto;
width: 50%;
text-align: justify;
font-size: 20px;
}
.explanation img {
max-width: 60%;
display: block;
float:left;
margin-right: 2em;
margin-top: 1em;
}
`
render() {
return html`
<div class="title">
<h2>Phoenix Technologies</h2>
</div>
<div class="explanation">
<p>Welcome to Phoenix Technologies!</p>
<p>Please click the button on the bottom right to start the conversation
with an LLM-powered customer support agent.</p>
</div>
`
}
}
customElements.define('demo-title', DemoTitle);

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@font-face{font-family:"Red Hat Display";font-style:normal;font-weight:400;font-display:swap;src:url(https://fonts.gstatic.com/s/redhatdisplay/v7/8vIQ7wUr0m80wwYf0QCXZzYzUoTg8z6hR4jNCH5Z.woff2) format("woff2");unicode-range:U+0100-024F,U+0259,U+1E00-1EFF,U+2020,U+20A0-20AB,U+20AD-20CF,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:"Red Hat Display";font-style:normal;font-weight:400;font-display:swap;src:url(https://fonts.gstatic.com/s/redhatdisplay/v7/8vIQ7wUr0m80wwYf0QCXZzYzUoTg_T6hR4jNCA.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+2000-206F,U+2074,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:"Red Hat Display";font-style:normal;font-weight:500;font-display:swap;src:url(https://fonts.gstatic.com/s/redhatdisplay/v7/8vIQ7wUr0m80wwYf0QCXZzYzUoTg8z6hR4jNCH5Z.woff2) format("woff2");unicode-range:U+0100-024F,U+0259,U+1E00-1EFF,U+2020,U+20A0-20AB,U+20AD-20CF,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:"Red Hat Display";font-style:normal;font-weight:500;font-display:swap;src:url(https://fonts.gstatic.com/s/redhatdisplay/v7/8vIQ7wUr0m80wwYf0QCXZzYzUoTg_T6hR4jNCA.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+2000-206F,U+2074,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:"Red Hat Display";font-style:normal;font-weight:700;font-display:swap;src:url(https://fonts.gstatic.com/s/redhatdisplay/v7/8vIQ7wUr0m80wwYf0QCXZzYzUoTg8z6hR4jNCH5Z.woff2) format("woff2");unicode-range:U+0100-024F,U+0259,U+1E00-1EFF,U+2020,U+20A0-20AB,U+20AD-20CF,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:"Red Hat Display";font-style:normal;font-weight:700;font-display:swap;src:url(https://fonts.gstatic.com/s/redhatdisplay/v7/8vIQ7wUr0m80wwYf0QCXZzYzUoTg_T6hR4jNCA.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+2000-206F,U+2074,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:"Red Hat Text";font-style:normal;font-weight:400;font-display:swap;src:url(https://fonts.gstatic.com/s/redhattext/v6/RrQXbohi_ic6B3yVSzGBrMxQZqctMc-JPWCN.woff2) format("woff2");unicode-range:U+0100-024F,U+0259,U+1E00-1EFF,U+2020,U+20A0-20AB,U+20AD-20CF,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:"Red Hat Text";font-style:normal;font-weight:400;font-display:swap;src:url(https://fonts.gstatic.com/s/redhattext/v6/RrQXbohi_ic6B3yVSzGBrMxQaKctMc-JPQ.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+2000-206F,U+2074,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:"Red Hat Text";font-style:normal;font-weight:500;font-display:swap;src:url(https://fonts.gstatic.com/s/redhattext/v6/RrQXbohi_ic6B3yVSzGBrMxQZqctMc-JPWCN.woff2) format("woff2");unicode-range:U+0100-024F,U+0259,U+1E00-1EFF,U+2020,U+20A0-20AB,U+20AD-20CF,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:"Red Hat Text";font-style:normal;font-weight:500;font-display:swap;src:url(https://fonts.gstatic.com/s/redhattext/v6/RrQXbohi_ic6B3yVSzGBrMxQaKctMc-JPQ.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+2000-206F,U+2074,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}/*# sourceMappingURL=red-hat-font.css.map */

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// import './font-awesome-brands.js';
// import './font-awesome-regular.js';
import './font-awesome-solid.js';
// export * from './font-awesome-brands.js';
// export * from './font-awesome-regular.js';
export * from './font-awesome-solid.js';

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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<link rel="shortcut icon" type="image/png" href="favicon.ico">
<script src="/_importmap/dynamic-importmap.js"></script>
<script type="module">
import 'icons/font-awesome.js';
import 'components/demo-title.js';
import 'components/demo-chat.js';
import 'wc-chatbot';
</script>
<link rel="stylesheet" href="fonts/red-hat-font.min.css">
<title>Miles of Smiles</title>
<style>
:root {
--main-bg-color: rgb(246, 242, 242);
--main-highlight-text-color: rgba(237, 98, 128);
}
body {
margin: 0;
width: 100%;
height: 100vh;
font-family: 'Red Hat Text', sans-serif;
overflow: hidden;
display: flex;
flex-direction: column;
justify-content: center;
color: var(--lumo-body-text-color);
background: var(--main-bg-color);
}
chat-bot {
--chatbot-avatar-bg-color: rgba(237, 98, 128);
--chatbot-avatar-margin: 10%;
--chatbot-header-bg-color: rgba(237, 98, 128);
--chatbot-header-title-color: #FFFFFF;
--chatbot-body-bg-color: var(--main-bg-color);
--chatbot-send-button-color: rgba(237, 98, 128);
}
chat-bot::part(chat-bubble) {
--chat-bubble-avatar-color: rgba(237, 98, 128);
--chat-bubble-color: rgba(203, 232, 237, 0.71);
--chat-bubble-right-color: rgb(157, 238, 244);
--chat-bubble-font-color: #333;
--chat-bubble-font-right-color: #333;
--chat-bubble-delay: 0.2s;
}
.middle {
margin-top: 2em;
overflow: hidden;
width: 50%;
margin-left: auto;
margin-right: auto;
display: flex;
}
</style>
</head>
<body>
<demo-title></demo-title>
<div class="middle">
<demo-chat>
<chat-bot></chat-bot>
</demo-chat>
</div>
</body>
</html>

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quarkus:
langchain4j:
openai:
api-key: #PUT_YOUR_TOKEN_HERE
base-url: https://inference-llama33-70b-maas.apps.ai.kvant.cloud/v1/
timeout: 60s
#https://docs.langchain4j.dev/tutorials/model-parameters/
chat-model:
model-name: inference-llama33-70b
temperature: 1.0
#max-tokens: 1000
#frequency-penalty: 2
frequency-penalty: 0
log-requests: true
log-responses: true
embedding-model:
log-responses: true
log-requests: true
#embedding-model:
# provider: dev.langchain4j.model.embedding.onnx.bgesmallenq.BgeSmallEnQuantizedEmbeddingModel
pgvector:
dimension: 1024
#This configuration takes precedence over the embedding-model.provider one.
l4j:
custom-embedding-model:
#This is 1024 dimension model. pgvector must be configured accordingly
model-name: inference-multilingual-e5l
base-url: https://inference-multilingual-e5l-maas.apps.ai.kvant.cloud/v1
api-key: #PUT_YOUR_TOKEN_HERE
log-requests: false
log-responses: false
#Not supported by current implementation
#dimensions: ${quarkus.langchain4j.pgvector.dimension}
rag:
location: src/main/resources/rag

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Phoenix Technologies IT Services Terms of Use
1. Introduction
These Terms of Service (“Terms”) govern the access or use by you, an individual, from within any country in the world, of applications, websites, content, products, and services (“Services”) made available by Phoenix Technologies IT Services, a company registered in the United States of America.
2. The Services
Phoenix Technologies provides IT Services to the end user. We reserve the right to temporarily or permanently discontinue the Services at any time and are not liable for any modification, suspension or discontinuation of the Services.
3. Bookings
3.1 Users may make a booking through our website or mobile application.
3.2 You must provide accurate, current and complete information during the reservation process. You are responsible for all charges incurred under your account.
3.3 All bookings are subject to IT service availability.
4. Cancellation Policy
4.1 Reservations can be cancelled up to 11 days prior to the start of the booking period.
4.2 If the booking period is less than 4 days, cancellations are not permitted.
5. Use of Service
5.1 All services rented from Phoenix Technologies must not be used:
for any illegal purpose or in connection with any criminal offense.
for using in profit organization.
for selling it to a third party.
outside of Switzerland or EU.
6. Liability
6.1 Users will be held liable for any damage, loss, or theft that occurs during the rental period.
6.2 We do not accept liability for any indirect or consequential loss, damage, or expense including but not limited to loss of profits.
7. Governing Law
These terms will be governed by and construed in accordance with the laws of the Switzerland, and any disputes relating to these terms will be subject to the exclusive jurisdiction of the courts of Switzerland.
8. Changes to These Terms
We may revise these terms of use at any time by amending this page. You are expected to check this page from time to time to take notice of any changes we made.
9. Acceptance of These Terms
By using the Services, you acknowledge that you have read and understand these Terms and agree to be bound by them.
If you do not agree to these Terms, please do not use or access our Services.

14
demo-07/README.md Normal file
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Demo 07 - Functions
===============================================
We will allow the LLM to call a function that you have defined in your code. The LLM will decide when and with
which parameters to call the function.
# Function calling
Function calling is a mechanism offered by some LLMs (GPTs, Llama…). It allows the LLM to call a function that
you have defined in your application. When the application sends the user message to the LLM, it also sends
the list of functions that the LLM can call.
Then the LLM can decide, if it wants, to call one of these functions with the parameters it wants.
The application receives the method invocation request and executes the function with the parameters provided by the LLM.
The result is sent back to the LLM, which can use it to continue the conversation, and compute the next message.

218
demo-07/pom.xml Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>ch.phoenixtechnologies</groupId>
<artifactId>ai-lc4j-workshop</artifactId>
<version>0.0.1-SNAPSHOT</version>
</parent>
<artifactId>demo-07</artifactId>
<properties>
<java.version>21</java.version>
<maven.compiler.source>${java.version}</maven.compiler.source>
<maven.compiler.target>${java.version}</maven.compiler.target>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<!-- Plugin versions -->
<compiler-plugin.version>3.14.0</compiler-plugin.version>
<enforcer-plugin.version>3.5.0</enforcer-plugin.version>
<surefire-plugin.version>3.5.2</surefire-plugin.version>
<spotless-maven-plugin.version>2.44.3</spotless-maven-plugin.version>
<palantir-java-format.version>2.50.0</palantir-java-format.version>
<release-plugin.version>3.1.1</release-plugin.version>
<!-- Quarkus version -->
<quarkus.platform.artifact-id>quarkus-bom</quarkus.platform.artifact-id>
<quarkus.platform.group-id>io.quarkus.platform</quarkus.platform.group-id>
<quarkus.platform.version>3.19.2</quarkus.platform.version>
<!-- LangChain4j-->
<quarkus-langchain4j.version>0.25.0</quarkus-langchain4j.version>
<!-- Test dependency versions -->
<assertj.version>3.27.3</assertj.version>
</properties>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>${quarkus.platform.group-id}</groupId>
<artifactId>${quarkus.platform.artifact-id}</artifactId>
<version>${quarkus.platform.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
<dependency>
<groupId>io.quarkiverse.langchain4j</groupId>
<artifactId>quarkus-langchain4j-bom</artifactId>
<version>${quarkus-langchain4j.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<dependencies>
<dependency>
<groupId>io.quarkus</groupId>
<artifactId>quarkus-config-yaml</artifactId>
</dependency>
<!-- langchain4j -->
<dependency>
<groupId>io.quarkiverse.langchain4j</groupId>
<artifactId>quarkus-langchain4j-openai</artifactId>
</dependency>
<dependency>
<groupId>io.quarkiverse.langchain4j</groupId>
<artifactId>quarkus-langchain4j-pgvector</artifactId>
</dependency>
<dependency>
<groupId>dev.langchain4j</groupId>
<artifactId>langchain4j-embeddings</artifactId>
</dependency>
<dependency>
<groupId>io.quarkus</groupId>
<artifactId>quarkus-rest</artifactId>
</dependency>
<dependency>
<groupId>io.quarkus</groupId>
<artifactId>quarkus-websockets-next</artifactId>
</dependency>
<dependency>
<groupId>io.quarkus</groupId>
<artifactId>quarkus-hibernate-orm-panache</artifactId>
</dependency>
<dependency>
<groupId>io.quarkus</groupId>
<artifactId>quarkus-jdbc-postgresql</artifactId>
</dependency>
<!-- UI -->
<dependency>
<groupId>org.mvnpm</groupId>
<artifactId>importmap</artifactId>
<version>1.0.8</version>
</dependency>
<dependency>
<groupId>org.mvnpm.at.mvnpm</groupId>
<artifactId>vaadin-webcomponents</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.mvnpm</groupId>
<artifactId>es-module-shims</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.mvnpm</groupId>
<artifactId>wc-chatbot</artifactId>
<version>0.2.0</version>
<scope>runtime</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>${quarkus.platform.group-id}</groupId>
<artifactId>quarkus-maven-plugin</artifactId>
<version>${quarkus.platform.version}</version>
<extensions>true</extensions>
<executions>
<execution>
<goals>
<goal>build</goal>
<goal>generate-code</goal>
<goal>generate-code-tests</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>${compiler-plugin.version}</version>
<configuration>
<compilerArgs>
<arg>-parameters</arg>
</compilerArgs>
<release>${java.version}</release>
</configuration>
</plugin>
<plugin>
<artifactId>maven-surefire-plugin</artifactId>
<version>${surefire-plugin.version}</version>
<configuration>
<systemPropertyVariables>
<java.util.logging.manager>org.jboss.logmanager.LogManager</java.util.logging.manager>
<maven.home>${maven.home}</maven.home>
</systemPropertyVariables>
</configuration>
</plugin>
<plugin>
<artifactId>maven-enforcer-plugin</artifactId>
<version>${enforcer-plugin.version}</version>
<executions>
<execution>
<id>ban-bad-log4j-versions</id>
<phase>validate</phase>
<goals>
<goal>enforce</goal>
</goals>
<configuration>
<rules>
<bannedDependencies>
<excludes>
<exclude>org.apache.logging.log4j:log4j-core:(,2.17.1)</exclude>
</excludes>
</bannedDependencies>
</rules>
<fail>true</fail>
</configuration>
</execution>
</executions>
</plugin>
<plugin>
<groupId>com.diffplug.spotless</groupId>
<artifactId>spotless-maven-plugin</artifactId>
<version>${spotless-maven-plugin.version}</version>
<executions>
<execution>
<goals>
<goal>check</goal>
</goals>
<phase>compile</phase>
</execution>
</executions>
<configuration>
<java>
<removeUnusedImports />
<palantirJavaFormat>
<version>${palantir-java-format.version}</version>
<style>PALANTIR</style>
<formatJavadoc>false</formatJavadoc>
</palantirJavaFormat>
</java>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-release-plugin</artifactId>
<version>${release-plugin.version}</version>
<configuration>
<tagNameFormat>@{project.version}</tagNameFormat>
<checkModificationExcludes>mvnw</checkModificationExcludes>
<scmReleaseCommitComment>chore: release @{releaseLabel}</scmReleaseCommitComment>
<scmDevelopmentCommitComment>chore: prepare for next development iteration [skip ci]</scmDevelopmentCommitComment>
</configuration>
</plugin>
</plugins>
</build>
</project>

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package ch.phoenixtechnologies.lc4j.openai.runtime.config;
import io.smallrye.config.ConfigMapping;
@ConfigMapping(prefix = "l4j.custom-embedding-model")
public interface CustomEmbeddingModelConfig {
String baseUrl();
String apiKey();
String modelName();
boolean logRequests();
boolean logResponses();
// int dimensions();
}

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package ch.phoenixtechnologies.lc4j.openai.runtime.config;
import dev.langchain4j.model.embedding.EmbeddingModel;
import dev.langchain4j.model.openai.OpenAiEmbeddingModel;
import jakarta.enterprise.context.ApplicationScoped;
import jakarta.enterprise.inject.Produces;
@ApplicationScoped
public class CustomEmbeddingModelProducer {
private final CustomEmbeddingModelConfig config;
public CustomEmbeddingModelProducer(CustomEmbeddingModelConfig config) {
this.config = config;
}
@Produces
public EmbeddingModel getModel() {
return OpenAiEmbeddingModel.builder()
.apiKey(config.apiKey())
.baseUrl(config.baseUrl())
.modelName(config.modelName())
.logRequests(config.logRequests())
.logResponses(config.logResponses())
// .dimensions(config.dimensions())
.build();
}
}

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package ch.phoenixtechnologies.lc4j.workshop;
import ch.phoenixtechnologies.lc4j.workshop.persistence.BookingRepository;
import dev.langchain4j.service.SystemMessage;
import io.quarkiverse.langchain4j.RegisterAiService;
import io.quarkiverse.langchain4j.ToolBox;
import jakarta.enterprise.context.SessionScoped;
@SessionScoped
@RegisterAiService
public interface CustomerSupportAgent {
@SystemMessage(
"""
You are a customer support agent of a IT company 'Phoenix Technologies AG based in Switzerland.
You are friendly, polite and concise.
If the question is unrelated to IT services, you should politely redirect the customer to the right department.
Today is {current_date}
""")
@ToolBox(BookingRepository.class)
String chat(String userMessage);
}

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package ch.phoenixtechnologies.lc4j.workshop;
import io.quarkus.websockets.next.OnOpen;
import io.quarkus.websockets.next.OnTextMessage;
import io.quarkus.websockets.next.WebSocket;
@WebSocket(path = "/customer-support-agent")
public class CustomerSupportAgentWebSocket {
private final CustomerSupportAgent agent;
public CustomerSupportAgentWebSocket(CustomerSupportAgent agent) {
this.agent = agent;
}
@OnOpen
public String onOpen() {
return "Welcome to Phoenix Technologies AI!";
}
@OnTextMessage
public String onTextMessage(String message) {
return agent.chat(message);
}
}

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@ -0,0 +1,45 @@
package ch.phoenixtechnologies.lc4j.workshop;
import jakarta.annotation.PostConstruct;
import jakarta.enterprise.context.ApplicationScoped;
import jakarta.ws.rs.GET;
import jakarta.ws.rs.Path;
import jakarta.ws.rs.Produces;
import org.mvnpm.importmap.Aggregator;
@ApplicationScoped
@Path("/_importmap")
public class ImportmapResource {
private static final String JAVASCRIPT_CODE =
"""
const im = document.createElement('script');
im.type = 'importmap';
im.textContent = JSON.stringify(%s);
document.currentScript.after(im);
""";
private String importmap;
@PostConstruct
void init() {
Aggregator aggregator = new Aggregator();
// Add our own mappings
aggregator.addMapping("icons/", "/icons/");
aggregator.addMapping("components/", "/components/");
aggregator.addMapping("fonts/", "/fonts/");
this.importmap = aggregator.aggregateAsJson();
}
@GET
@Path("/dynamic.importmap")
@Produces("application/importmap+json")
public String importMap() {
return this.importmap;
}
@GET
@Path("/dynamic-importmap.js")
@Produces("application/javascript")
public String importMapJson() {
return JAVASCRIPT_CODE.formatted(this.importmap);
}
}

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@ -0,0 +1,45 @@
package ch.phoenixtechnologies.lc4j.workshop;
import static dev.langchain4j.data.document.splitter.DocumentSplitters.recursive;
import dev.langchain4j.data.document.Document;
import dev.langchain4j.data.document.loader.FileSystemDocumentLoader;
import dev.langchain4j.model.embedding.EmbeddingModel;
import dev.langchain4j.model.embedding.onnx.HuggingFaceTokenizer;
import dev.langchain4j.store.embedding.EmbeddingStore;
import dev.langchain4j.store.embedding.EmbeddingStoreIngestor;
import io.quarkus.logging.Log;
import io.quarkus.runtime.StartupEvent;
import jakarta.enterprise.context.ApplicationScoped;
import jakarta.enterprise.event.Observes;
import java.nio.file.Path;
import java.util.List;
import org.eclipse.microprofile.config.inject.ConfigProperty;
@ApplicationScoped
public class RagIngestion {
/**
* Ingests the documents from the given location into the embedding store.
*
* @param ev the startup event to trigger the ingestion when the application starts
* @param store the embedding store the embedding store (PostGreSQL in our case)
* @param embeddingModel the embedding model to use for the embedding (BGE-Small-EN-Quantized in our case)
* @param documents the location of the documents to ingest
*/
public void ingest(
@Observes StartupEvent ev,
EmbeddingStore store,
EmbeddingModel embeddingModel,
@ConfigProperty(name = "rag.location") Path documents) {
store.removeAll(); // cleanup the store to start fresh (just for demo purposes)
List<Document> list = FileSystemDocumentLoader.loadDocumentsRecursively(documents);
EmbeddingStoreIngestor ingestor = EmbeddingStoreIngestor.builder()
.embeddingStore(store)
.embeddingModel(embeddingModel)
.documentSplitter(recursive(100, 25, new HuggingFaceTokenizer()))
.build();
ingestor.ingest(list);
Log.info("Documents ingested successfully");
}
}

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@ -0,0 +1,38 @@
package ch.phoenixtechnologies.lc4j.workshop;
import dev.langchain4j.data.message.UserMessage;
import dev.langchain4j.model.embedding.EmbeddingModel;
import dev.langchain4j.rag.DefaultRetrievalAugmentor;
import dev.langchain4j.rag.RetrievalAugmentor;
import dev.langchain4j.rag.content.retriever.EmbeddingStoreContentRetriever;
import dev.langchain4j.store.embedding.EmbeddingStore;
import jakarta.enterprise.context.ApplicationScoped;
import jakarta.enterprise.inject.Produces;
public class RagRetriever {
@Produces
@ApplicationScoped
public RetrievalAugmentor create(EmbeddingStore store, EmbeddingModel model) {
var contentRetriever = EmbeddingStoreContentRetriever.builder()
.embeddingModel(model)
.embeddingStore(store)
.maxResults(3)
.build();
return DefaultRetrievalAugmentor.builder()
.contentRetriever(contentRetriever)
.contentInjector((contents, userMessage) -> {
StringBuffer prompt = new StringBuffer(userMessage.singleText());
prompt.append("\nPlease, only use the following information:\n");
prompt.append(
"- If you are asked for booking information and you aren't given a name or booking id, ask for it. DON'T try with randomly names or ids.\n");
prompt.append(
"- Don't inform about the function details you need to invoke, just invoke it when it's appropriate\n");
contents.forEach(content -> prompt.append("- ")
.append(content.textSegment().text())
.append("\n"));
return new UserMessage(prompt.toString());
})
.build();
}
}

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@ -0,0 +1,15 @@
package ch.phoenixtechnologies.lc4j.workshop.persistence;
import io.quarkus.hibernate.orm.panache.PanacheEntity;
import jakarta.persistence.Entity;
import jakarta.persistence.ManyToOne;
import java.time.LocalDate;
@Entity
public class Booking extends PanacheEntity {
@ManyToOne
Customer customer;
LocalDate dateFrom;
LocalDate dateTo;
}

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@ -0,0 +1,47 @@
package ch.phoenixtechnologies.lc4j.workshop.persistence;
import dev.langchain4j.agent.tool.Tool;
import io.quarkus.hibernate.orm.panache.PanacheRepository;
import jakarta.enterprise.context.ApplicationScoped;
import jakarta.transaction.Transactional;
import java.time.LocalDate;
import java.util.List;
@ApplicationScoped
public class BookingRepository implements PanacheRepository<Booking> {
@Tool("Cancel a booking")
@Transactional
public void cancelBooking(long bookingId, String customerFirstName, String customerLastName) {
var booking = getBookingDetails(bookingId, customerFirstName, customerLastName);
// too late to cancel
if (booking.dateFrom.minusDays(11).isBefore(LocalDate.now())) {
throw new Exceptions.BookingCannotBeCancelledException(
bookingId, "booking from date is 11 days before today");
}
// too short to cancel
if (booking.dateTo.minusDays(4).isBefore(booking.dateFrom)) {
throw new Exceptions.BookingCannotBeCancelledException(bookingId, "booking period is less than four days");
}
delete(booking);
}
@Tool("List booking for a customer")
@Transactional
public List<Booking> listBookingsForCustomer(String customerName, String customerSurname) {
var found = Customer.findByFirstAndLastName(customerName, customerSurname);
return found.map(customer -> list("customer", customer))
.orElseThrow(() -> new Exceptions.CustomerNotFoundException(customerName, customerSurname));
}
@Tool("Get booking details")
@Transactional
public Booking getBookingDetails(long bookingId, String customerFirstName, String customerLastName) {
var found = findByIdOptional(bookingId).orElseThrow(() -> new Exceptions.BookingNotFoundException(bookingId));
if (!found.customer.firstName.equals(customerFirstName) || !found.customer.lastName.equals(customerLastName)) {
throw new Exceptions.BookingNotFoundException(bookingId);
}
return found;
}
}

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@ -0,0 +1,15 @@
package ch.phoenixtechnologies.lc4j.workshop.persistence;
import io.quarkus.hibernate.orm.panache.PanacheEntity;
import jakarta.persistence.Entity;
import java.util.Optional;
@Entity
public class Customer extends PanacheEntity {
String firstName;
String lastName;
public static Optional<Customer> findByFirstAndLastName(String firstName, String lastName) {
return find("firstName = ?1 and lastName = ?2", firstName, lastName).firstResultOptional();
}
}

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@ -0,0 +1,25 @@
package ch.phoenixtechnologies.lc4j.workshop.persistence;
public class Exceptions {
public static class CustomerNotFoundException extends RuntimeException {
public CustomerNotFoundException(String customerName, String customerSurname) {
super("Customer not found: %s %s".formatted(customerName, customerSurname));
}
}
public static class BookingCannotBeCancelledException extends RuntimeException {
public BookingCannotBeCancelledException(long bookingId) {
super("Booking %d cannot be cancelled - see terms of use".formatted(bookingId));
}
public BookingCannotBeCancelledException(long bookingId, String reason) {
super("Booking %d cannot be cancelled because %s - see terms of use".formatted(bookingId, reason));
}
}
public static class BookingNotFoundException extends RuntimeException {
public BookingNotFoundException(long bookingId) {
super("Booking %d not found".formatted(bookingId));
}
}
}

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@ -0,0 +1,74 @@
import {css, LitElement} from 'lit';
import '@vaadin/icon';
import '@vaadin/button';
import '@vaadin/text-field';
import '@vaadin/text-area';
import '@vaadin/form-layout';
import '@vaadin/progress-bar';
import '@vaadin/checkbox';
import '@vaadin/horizontal-layout';
import '@vaadin/grid';
import '@vaadin/grid/vaadin-grid-sort-column.js';
export class DemoChat extends LitElement {
_stripHtml(html) {
const div = document.createElement("div");
div.innerHTML = html;
return div.textContent || div.innerText || "";
}
connectedCallback() {
const chatBot = document.getElementsByTagName("chat-bot")[0];
const protocol = (window.location.protocol === 'https:') ? 'wss' : 'ws';
const socket = new WebSocket(protocol + '://' + window.location.host + '/customer-support-agent');
const that = this;
socket.onmessage = function (event) {
chatBot.hideLastLoading();
// LLM response
let lastMessage;
if (chatBot.messages.length > 0) {
lastMessage = chatBot.messages[chatBot.messages.length - 1];
}
if (lastMessage && lastMessage.sender.name === "Bot" && ! lastMessage.loading) {
if (! lastMessage.msg) {
lastMessage.msg = "";
}
lastMessage.msg += event.data;
let bubbles = chatBot.shadowRoot.querySelectorAll("chat-bubble");
let bubble = bubbles.item(bubbles.length - 1);
if (lastMessage.message) {
bubble.innerHTML = that._stripHtml(lastMessage.message) + lastMessage.msg;
} else {
bubble.innerHTML = lastMessage.msg;
}
chatBot.body.scrollTo({ top: chatBot.body.scrollHeight, behavior: 'smooth' })
} else {
chatBot.sendMessage(event.data, {
right: false,
sender: {
name: "Bot"
}
});
}
}
chatBot.addEventListener("sent", function (e) {
if (e.detail.message.sender.name !== "Bot") {
// User message
const msg = that._stripHtml(e.detail.message.message);
socket.send(msg);
chatBot.sendMessage("", {
right: false,
loading: true
});
}
});
}
}
customElements.define('demo-chat', DemoChat);

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@ -0,0 +1,63 @@
import {LitElement, html, css} from 'lit';
import '@vaadin/icon';
import '@vaadin/button';
import '@vaadin/text-field';
import '@vaadin/text-area';
import '@vaadin/form-layout';
import '@vaadin/progress-bar';
import '@vaadin/checkbox';
import '@vaadin/grid';
import '@vaadin/grid/vaadin-grid-sort-column.js';
export class DemoTitle extends LitElement {
static styles = css`
h2 {
font-family: "Red Hat Mono", monospace;
font-size: 60px;
font-style: normal;
font-variant: normal;
font-weight: 700;
line-height: 26.4px;
color: var(--main-highlight-text-color);
}
.title {
text-align: center;
padding: 1em;
background: var(--main-bg-color);
}
.explanation {
margin-left: auto;
margin-right: auto;
width: 50%;
text-align: justify;
font-size: 20px;
}
.explanation img {
max-width: 60%;
display: block;
float:left;
margin-right: 2em;
margin-top: 1em;
}
`
render() {
return html`
<div class="title">
<h2>Phoenix Technologies</h2>
</div>
<div class="explanation">
<p>Welcome to Phoenix Technologies!</p>
<p>Please click the button on the bottom right to start the conversation
with an LLM-powered customer support agent.</p>
</div>
`
}
}
customElements.define('demo-title', DemoTitle);

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@font-face{font-family:"Red Hat Display";font-style:normal;font-weight:400;font-display:swap;src:url(https://fonts.gstatic.com/s/redhatdisplay/v7/8vIQ7wUr0m80wwYf0QCXZzYzUoTg8z6hR4jNCH5Z.woff2) format("woff2");unicode-range:U+0100-024F,U+0259,U+1E00-1EFF,U+2020,U+20A0-20AB,U+20AD-20CF,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:"Red Hat Display";font-style:normal;font-weight:400;font-display:swap;src:url(https://fonts.gstatic.com/s/redhatdisplay/v7/8vIQ7wUr0m80wwYf0QCXZzYzUoTg_T6hR4jNCA.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+2000-206F,U+2074,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:"Red Hat Display";font-style:normal;font-weight:500;font-display:swap;src:url(https://fonts.gstatic.com/s/redhatdisplay/v7/8vIQ7wUr0m80wwYf0QCXZzYzUoTg8z6hR4jNCH5Z.woff2) format("woff2");unicode-range:U+0100-024F,U+0259,U+1E00-1EFF,U+2020,U+20A0-20AB,U+20AD-20CF,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:"Red Hat Display";font-style:normal;font-weight:500;font-display:swap;src:url(https://fonts.gstatic.com/s/redhatdisplay/v7/8vIQ7wUr0m80wwYf0QCXZzYzUoTg_T6hR4jNCA.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+2000-206F,U+2074,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:"Red Hat Display";font-style:normal;font-weight:700;font-display:swap;src:url(https://fonts.gstatic.com/s/redhatdisplay/v7/8vIQ7wUr0m80wwYf0QCXZzYzUoTg8z6hR4jNCH5Z.woff2) format("woff2");unicode-range:U+0100-024F,U+0259,U+1E00-1EFF,U+2020,U+20A0-20AB,U+20AD-20CF,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:"Red Hat Display";font-style:normal;font-weight:700;font-display:swap;src:url(https://fonts.gstatic.com/s/redhatdisplay/v7/8vIQ7wUr0m80wwYf0QCXZzYzUoTg_T6hR4jNCA.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+2000-206F,U+2074,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:"Red Hat Text";font-style:normal;font-weight:400;font-display:swap;src:url(https://fonts.gstatic.com/s/redhattext/v6/RrQXbohi_ic6B3yVSzGBrMxQZqctMc-JPWCN.woff2) format("woff2");unicode-range:U+0100-024F,U+0259,U+1E00-1EFF,U+2020,U+20A0-20AB,U+20AD-20CF,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:"Red Hat Text";font-style:normal;font-weight:400;font-display:swap;src:url(https://fonts.gstatic.com/s/redhattext/v6/RrQXbohi_ic6B3yVSzGBrMxQaKctMc-JPQ.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+2000-206F,U+2074,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:"Red Hat Text";font-style:normal;font-weight:500;font-display:swap;src:url(https://fonts.gstatic.com/s/redhattext/v6/RrQXbohi_ic6B3yVSzGBrMxQZqctMc-JPWCN.woff2) format("woff2");unicode-range:U+0100-024F,U+0259,U+1E00-1EFF,U+2020,U+20A0-20AB,U+20AD-20CF,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:"Red Hat Text";font-style:normal;font-weight:500;font-display:swap;src:url(https://fonts.gstatic.com/s/redhattext/v6/RrQXbohi_ic6B3yVSzGBrMxQaKctMc-JPQ.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+2000-206F,U+2074,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}/*# sourceMappingURL=red-hat-font.css.map */

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