# Build MegaService of ChatQnA on Gaudi

This document outlines the deployment process for a ChatQnA application utilizing the [GenAIComps](https://github.com/opea-project/GenAIComps.git) microservice pipeline on Intel Gaudi server. The steps include Docker image creation, container deployment via Docker Compose, and service execution to integrate microservices such as embedding, retriever, rerank, and llm. We will publish the Docker images to Docker Hub, it will simplify the deployment process for this service.

Quick Start:

1. Set up the environment variables.
2. Run Docker Compose.
3. Consume the ChatQnA Service.

## Quick Start: 1.Setup Environment Variable

To set up environment variables for deploying ChatQnA services, follow these steps:

1. Set the required environment variables:

   ```bash
   # Example: host_ip="192.168.1.1"
   export host_ip="External_Public_IP"
   # Example: no_proxy="localhost, 127.0.0.1, 192.168.1.1"
   export no_proxy="Your_No_Proxy"
   export HUGGINGFACEHUB_API_TOKEN="Your_Huggingface_API_Token"
   ```

2. If you are in a proxy environment, also set the proxy-related environment variables:

   ```bash
   export http_proxy="Your_HTTP_Proxy"
   export https_proxy="Your_HTTPs_Proxy"
   ```

3. Set up other environment variables:

   ```bash
   source ./set_env.sh
   ```

## Quick Start: 2.Run Docker Compose

```bash
docker compose up -d
```

It will automatically download the docker image on `docker hub`:

```bash
docker pull opea/chatqna:latest
docker pull opea/chatqna-ui:latest
```

In following cases, you could build docker image from source by yourself.

- Failed to download the docker image. (The essential Docker image `opea/nginx` has not yet been released, users need to build this image first)

- If you want to use a specific version of Docker image.

Please refer to 'Build Docker Images' in below.

## QuickStart: 3.Consume the ChatQnA Service

```bash
curl http://${host_ip}:8888/v1/chatqna \
    -H "Content-Type: application/json" \
    -d '{
        "messages": "What is the revenue of Nike in 2023?"
    }'
```

## 🚀 Build Docker Images

First of all, you need to build Docker Images locally. This step can be ignored after the Docker images published to Docker hub.

### 1. Build Embedding Image

```bash
git clone https://github.com/opea-project/GenAIComps.git
cd GenAIComps
docker build --no-cache -t opea/embedding-tei:latest --build-arg https_proxy=$https_proxy --build-arg http_proxy=$http_proxy -f comps/embeddings/tei/langchain/Dockerfile .
```

### 2. Build Retriever Image

```bash
docker build --no-cache -t opea/retriever-redis:latest --build-arg https_proxy=$https_proxy --build-arg http_proxy=$http_proxy -f comps/retrievers/redis/langchain/Dockerfile .
```

### 3. Build Rerank Image

> Skip for ChatQnA without Rerank pipeline

```bash
docker build --no-cache -t opea/reranking-tei:latest --build-arg https_proxy=$https_proxy --build-arg http_proxy=$http_proxy -f comps/reranks/tei/Dockerfile .
```

### 4. Build LLM Image

You can use different LLM serving solutions, choose one of following four options.

#### 4.1 Use TGI

```bash
docker build --no-cache -t opea/llm-tgi:latest --build-arg https_proxy=$https_proxy --build-arg http_proxy=$http_proxy -f comps/llms/text-generation/tgi/Dockerfile .
```

#### 4.2 Use VLLM

Build vllm docker.

```bash
docker build --no-cache -t opea/llm-vllm-hpu:latest --build-arg https_proxy=$https_proxy --build-arg http_proxy=$http_proxy -f comps/llms/text-generation/vllm/langchain/dependency/Dockerfile.intel_hpu .
```

Build microservice docker.

```bash
docker build --no-cache -t opea/llm-vllm:latest --build-arg https_proxy=$https_proxy --build-arg http_proxy=$http_proxy -f comps/llms/text-generation/vllm/langchain/Dockerfile .
```

#### 4.3 Use VLLM-on-Ray

Build vllm-on-ray docker.

```bash
docker build --no-cache -t opea/llm-vllm-ray-hpu:latest --build-arg https_proxy=$https_proxy --build-arg http_proxy=$http_proxy -f comps/llms/text-generation/vllm/ray/dependency/Dockerfile .
```

Build microservice docker.

```bash
docker build --no-cache -t opea/llm-vllm-ray:latest --build-arg https_proxy=$https_proxy --build-arg http_proxy=$http_proxy -f comps/llms/text-generation/vllm/ray/Dockerfile .
```

### 5. Build Dataprep Image

```bash
docker build --no-cache -t opea/dataprep-redis:latest --build-arg https_proxy=$https_proxy --build-arg http_proxy=$http_proxy -f comps/dataprep/redis/langchain/Dockerfile .
```

### 6. Build Guardrails Docker Image (Optional)

To fortify AI initiatives in production, Guardrails microservice can secure model inputs and outputs, building Trustworthy, Safe, and Secure LLM-based Applications.

```bash
docker build -t opea/guardrails-tgi:latest --build-arg https_proxy=$https_proxy --build-arg http_proxy=$http_proxy -f comps/guardrails/llama_guard/langchain/Dockerfile .
```

### 7. Build MegaService Docker Image

1. MegaService with Rerank

   To construct the Mega Service with Rerank, we utilize the [GenAIComps](https://github.com/opea-project/GenAIComps.git) microservice pipeline within the `chatqna.py` Python script. Build the MegaService Docker image using the command below:

   ```bash
   git clone https://github.com/opea-project/GenAIExamples.git
   cd GenAIExamples/ChatQnA/docker
   docker build --no-cache -t opea/chatqna:latest --build-arg https_proxy=$https_proxy --build-arg http_proxy=$http_proxy -f Dockerfile .
   ```

2. MegaService with Guardrails

   If you want to enable guardrails microservice in the pipeline, please use the below command instead:

   ```bash
   git clone https://github.com/opea-project/GenAIExamples.git
   cd GenAIExamples/ChatQnA/
   docker build --no-cache -t opea/chatqna-guardrails:latest --build-arg https_proxy=$https_proxy --build-arg http_proxy=$http_proxy -f Dockerfile.guardrails .
   ```

3. MegaService without Rerank

   To construct the Mega Service without Rerank, we utilize the [GenAIComps](https://github.com/opea-project/GenAIComps.git) microservice pipeline within the `chatqna_without_rerank.py` Python script. Build MegaService Docker image via below command:

   ```bash
   git clone https://github.com/opea-project/GenAIExamples.git
   cd GenAIExamples/ChatQnA/docker
   docker build --no-cache -t opea/chatqna-without-rerank:latest --build-arg https_proxy=$https_proxy --build-arg http_proxy=$http_proxy -f Dockerfile.without_rerank .
   ```

### 8. Build UI Docker Image

Construct the frontend Docker image using the command below:

```bash
cd GenAIExamples/ChatQnA/ui
docker build --no-cache -t opea/chatqna-ui:latest --build-arg https_proxy=$https_proxy --build-arg http_proxy=$http_proxy -f ./docker/Dockerfile .
```

### 9. Build Conversational React UI Docker Image (Optional)

Build frontend Docker image that enables Conversational experience with ChatQnA megaservice via below command:

**Export the value of the public IP address of your Gaudi node to the `host_ip` environment variable**

```bash
cd GenAIExamples/ChatQnA/ui
docker build --no-cache -t opea/chatqna-conversation-ui:latest --build-arg https_proxy=$https_proxy --build-arg http_proxy=$http_proxy -f ./docker/Dockerfile.react .
```

### 10. Build Nginx Docker Image

```bash
cd GenAIComps
docker build -t opea/nginx:latest --build-arg https_proxy=$https_proxy --build-arg http_proxy=$http_proxy -f comps/nginx/Dockerfile .
```

Then run the command `docker images`, you will have the following 8 Docker Images:

- `opea/embedding-tei:latest`
- `opea/retriever-redis:latest`
- `opea/reranking-tei:latest`
- `opea/llm-tgi:latest` or `opea/llm-vllm:latest` or `opea/llm-vllm-ray:latest`
- `opea/dataprep-redis:latest`
- `opea/chatqna:latest` or `opea/chatqna-guardrails:latest` or `opea/chatqna-without-rerank:latest`
- `opea/chatqna-ui:latest`
- `opea/nginx:latest`

If Conversation React UI is built, you will find one more image:

- `opea/chatqna-conversation-ui:latest`

If Guardrails docker image is built, you will find one more image:

- `opea/guardrails-tgi:latest`

## 🚀 Start MicroServices and MegaService

### Required Models

By default, the embedding, reranking and LLM models are set to a default value as listed below:

| Service   | Model                     |
| --------- | ------------------------- |
| Embedding | BAAI/bge-base-en-v1.5     |
| Reranking | BAAI/bge-reranker-base    |
| LLM       | Intel/neural-chat-7b-v3-3 |

Change the `xxx_MODEL_ID` below for your needs.

For users in China who are unable to download models directly from Huggingface, you can use [ModelScope](https://www.modelscope.cn/models) or a Huggingface mirror to download models. TGI can load the models either online or offline as described below:

1. Online

   ```bash
   export HF_TOKEN=${your_hf_token}
   export HF_ENDPOINT="https://hf-mirror.com"
   model_name="Intel/neural-chat-7b-v3-3"
   docker run -p 8008:80 -v ./data:/data --name tgi-service -e HF_ENDPOINT=$HF_ENDPOINT -e http_proxy=$http_proxy -e https_proxy=$https_proxy --runtime=habana -e HABANA_VISIBLE_DEVICES=all -e OMPI_MCA_btl_vader_single_copy_mechanism=none -e HUGGING_FACE_HUB_TOKEN=$HF_TOKEN -e ENABLE_HPU_GRAPH=true -e LIMIT_HPU_GRAPH=true -e USE_FLASH_ATTENTION=true -e FLASH_ATTENTION_RECOMPUTE=true --cap-add=sys_nice --ipc=host ghcr.io/huggingface/tgi-gaudi:2.0.5 --model-id $model_name --max-input-tokens 1024 --max-total-tokens 2048
   ```

2. Offline

   - Search your model name in ModelScope. For example, check [this page](https://www.modelscope.cn/models/ai-modelscope/neural-chat-7b-v3-1/files) for model `neural-chat-7b-v3-1`.

   - Click on `Download this model` button, and choose one way to download the model to your local path `/path/to/model`.

   - Run the following command to start TGI service.

     ```bash
     export HF_TOKEN=${your_hf_token}
     export model_path="/path/to/model"
     docker run -p 8008:80 -v $model_path:/data --name tgi_service --runtime=habana -e HABANA_VISIBLE_DEVICES=all -e OMPI_MCA_btl_vader_single_copy_mechanism=none -e HUGGING_FACE_HUB_TOKEN=$HF_TOKEN -e ENABLE_HPU_GRAPH=true -e LIMIT_HPU_GRAPH=true -e USE_FLASH_ATTENTION=true -e FLASH_ATTENTION_RECOMPUTE=true --cap-add=sys_nice --ipc=host ghcr.io/huggingface/tgi-gaudi:2.0.5 --model-id /data --max-input-tokens 1024 --max-total-tokens 2048
     ```

### Setup Environment Variables

1. Set the required environment variables:

   ```bash
   # Example: host_ip="192.168.1.1"
   export host_ip="External_Public_IP"
   # Example: no_proxy="localhost, 127.0.0.1, 192.168.1.1"
   export no_proxy="Your_No_Proxy"
   export HUGGINGFACEHUB_API_TOKEN="Your_Huggingface_API_Token"
   # Example: NGINX_PORT=80
   export NGINX_PORT=${your_nginx_port}
   ```

2. If you are in a proxy environment, also set the proxy-related environment variables:

   ```bash
   export http_proxy="Your_HTTP_Proxy"
   export https_proxy="Your_HTTPs_Proxy"
   ```

3. Set up other environment variables:

   ```bash
   source ./set_env.sh
   ```

### Start all the services Docker Containers

```bash
cd GenAIExamples/ChatQnA/docker_compose/intel/hpu/gaudi/
```

If use tgi for llm backend.

```bash
# Start ChatQnA with Rerank Pipeline
docker compose -f compose.yaml up -d
# Start ChatQnA without Rerank Pipeline
docker compose -f compose_without_rerank.yaml up -d
```

If use vllm for llm backend.

```bash
docker compose -f compose_vllm.yaml up -d
```

If use vllm-on-ray for llm backend.

```bash
docker compose -f compose_vllm_ray.yaml up -d
```

If you want to enable guardrails microservice in the pipeline, please follow the below command instead:

```bash
cd GenAIExamples/ChatQnA/docker_compose/intel/hpu/gaudi/
docker compose -f compose_guardrails.yaml up -d
```

> **_NOTE:_** Users need at least two Gaudi cards to run the ChatQnA successfully.

### Validate MicroServices and MegaService

Follow the instructions to validate MicroServices.
For validation details, please refer to [how-to-validate_service](./how_to_validate_service.md).

1. TEI Embedding Service

   ```bash
   curl ${host_ip}:8090/embed \
       -X POST \
       -d '{"inputs":"What is Deep Learning?"}' \
       -H 'Content-Type: application/json'
   ```

2. Embedding Microservice

   ```bash
   curl http://${host_ip}:6000/v1/embeddings \
     -X POST \
     -d '{"text":"hello"}' \
     -H 'Content-Type: application/json'
   ```

3. Retriever Microservice

   To consume the retriever microservice, you need to generate a mock embedding vector by Python script. The length of embedding vector
   is determined by the embedding model.
   Here we use the model `EMBEDDING_MODEL_ID="BAAI/bge-base-en-v1.5"`, which vector size is 768.

   Check the vecotor dimension of your embedding model, set `your_embedding` dimension equals to it.

   ```bash
   export your_embedding=$(python3 -c "import random; embedding = [random.uniform(-1, 1) for _ in range(768)]; print(embedding)")
   curl http://${host_ip}:7000/v1/retrieval \
     -X POST \
     -d "{\"text\":\"test\",\"embedding\":${your_embedding}}" \
     -H 'Content-Type: application/json'
   ```

4. TEI Reranking Service

   > Skip for ChatQnA without Rerank pipeline

   ```bash
   curl http://${host_ip}:8808/rerank \
       -X POST \
       -d '{"query":"What is Deep Learning?", "texts": ["Deep Learning is not...", "Deep learning is..."]}' \
       -H 'Content-Type: application/json'
   ```

5. Reranking Microservice

   > Skip for ChatQnA without Rerank pipeline

   ```bash
   curl http://${host_ip}:8000/v1/reranking \
     -X POST \
     -d '{"initial_query":"What is Deep Learning?", "retrieved_docs": [{"text":"Deep Learning is not..."}, {"text":"Deep learning is..."}]}' \
     -H 'Content-Type: application/json'
   ```

6. LLM backend Service

   In first startup, this service will take more time to download the model files. After it's finished, the service will be ready.

   Try the command below to check whether the LLM serving is ready.

   ```bash
   docker logs ${CONTAINER_ID} | grep Connected
   ```

   If the service is ready, you will get the response like below.

   ```
   2024-09-03T02:47:53.402023Z  INFO text_generation_router::server: router/src/server.rs:2311: Connected
   ```

   Then try the `cURL` command below to validate services.

   ```bash
   #TGI Service
   curl http://${host_ip}:8005/generate \
     -X POST \
     -d '{"inputs":"What is Deep Learning?","parameters":{"max_new_tokens":64, "do_sample": true}}' \
     -H 'Content-Type: application/json'
   ```

   ```bash
   #vLLM Service
   curl http://${host_ip}:8007/v1/completions \
     -H "Content-Type: application/json" \
     -d '{
     "model": "${LLM_MODEL_ID}",
     "prompt": "What is Deep Learning?",
     "max_tokens": 32,
     "temperature": 0
     }'
   ```

   ```bash
   #vLLM-on-Ray Service
   curl http://${host_ip}:8006/v1/chat/completions \
     -H "Content-Type: application/json" \
     -d '{"model": "${LLM_MODEL_ID}", "messages": [{"role": "user", "content": "What is Deep Learning?"}]}'
   ```

7. LLM Microservice

   ```bash
   # TGI service
   curl http://${host_ip}:9000/v1/chat/completions\
     -X POST \
     -d '{"query":"What is Deep Learning?","max_tokens":17,"top_k":10,"top_p":0.95,"typical_p":0.95,"temperature":0.01,"repetition_penalty":1.03,"streaming":true}' \
     -H 'Content-Type: application/json'
   ```

   For parameters in TGI mode, please refer to [HuggingFace InferenceClient API](https://huggingface.co/docs/huggingface_hub/package_reference/inference_client#huggingface_hub.InferenceClient.text_generation) (except we rename "max_new_tokens" to "max_tokens".)

   ```bash
   # vLLM Service
   curl http://${host_ip}:9000/v1/chat/completions \
    -X POST \
    -d '{"query":"What is Deep Learning?","max_tokens":17,"top_p":1,"temperature":0.7,"frequency_penalty":0,"presence_penalty":0, "streaming":false}' \
    -H 'Content-Type: application/json'
   ```

   For parameters in vLLM Mode, can refer to [LangChain VLLMOpenAI API](https://api.python.langchain.com/en/latest/llms/langchain_community.llms.vllm.VLLMOpenAI.html)

   ```bash
   # vLLM-on-Ray Service
   curl http://${host_ip}:9000/v1/chat/completions \
     -X POST \
     -d '{"query":"What is Deep Learning?","max_tokens":17,"presence_penalty":1.03","streaming":false}' \
     -H 'Content-Type: application/json'
   ```

   For parameters in vLLM-on-Ray mode, can refer to [LangChain ChatOpenAI API](https://python.langchain.com/v0.2/api_reference/openai/chat_models/langchain_openai.chat_models.base.ChatOpenAI.html)

8. MegaService

   ```bash
   curl http://${host_ip}:8888/v1/chatqna -H "Content-Type: application/json" -d '{
         "messages": "What is the revenue of Nike in 2023?"
         }'
   ```

9. Nginx Service

   ```bash
   curl http://${host_ip}:${NGINX_PORT}/v1/chatqna \
       -H "Content-Type: application/json" \
       -d '{"messages": "What is the revenue of Nike in 2023?"}'
   ```

10. Dataprep Microservice（Optional）

If you want to update the default knowledge base, you can use the following commands:

Update Knowledge Base via Local File Upload:

```bash
curl -X POST "http://${host_ip}:6007/v1/dataprep" \
     -H "Content-Type: multipart/form-data" \
     -F "files=@./nke-10k-2023.pdf"
```

This command updates a knowledge base by uploading a local file for processing. Update the file path according to your environment.

Add Knowledge Base via HTTP Links:

```bash
curl -X POST "http://${host_ip}:6007/v1/dataprep" \
     -H "Content-Type: multipart/form-data" \
     -F 'link_list=["https://opea.dev"]'
```

This command updates a knowledge base by submitting a list of HTTP links for processing.

Also, you are able to get the file/link list that you uploaded:

```bash
curl -X POST "http://${host_ip}:6007/v1/dataprep/get_file" \
     -H "Content-Type: application/json"
```

Then you will get the response JSON like this. Notice that the returned `name`/`id` of the uploaded link is `https://xxx.txt`.

```json
[
  {
    "name": "nke-10k-2023.pdf",
    "id": "nke-10k-2023.pdf",
    "type": "File",
    "parent": ""
  },
  {
    "name": "https://opea.dev.txt",
    "id": "https://opea.dev.txt",
    "type": "File",
    "parent": ""
  }
]
```

To delete the file/link you uploaded:

```bash
# delete link
curl -X POST "http://${host_ip}:6007/v1/dataprep/delete_file" \
     -d '{"file_path": "https://opea.dev.txt"}' \
     -H "Content-Type: application/json"

# delete file
curl -X POST "http://${host_ip}:6007/v1/dataprep/delete_file" \
     -d '{"file_path": "nke-10k-2023.pdf"}' \
     -H "Content-Type: application/json"

# delete all uploaded files and links
curl -X POST "http://${host_ip}:6007/v1/dataprep/delete_file" \
     -d '{"file_path": "all"}' \
     -H "Content-Type: application/json"
```

10. Guardrails (Optional)

```bash
curl http://${host_ip}:9090/v1/guardrails\
  -X POST \
  -d '{"text":"How do you buy a tiger in the US?","parameters":{"max_new_tokens":32}}' \
  -H 'Content-Type: application/json'
```

## 🚀 Launch the UI

### Launch with origin port

To access the frontend, open the following URL in your browser: http://{host_ip}:5173. By default, the UI runs on port 5173 internally. If you prefer to use a different host port to access the frontend, you can modify the port mapping in the `compose.yaml` file as shown below:

```yaml
  chaqna-gaudi-ui-server:
    image: opea/chatqna-ui:latest
    ...
    ports:
      - "80:5173"
```

### Launch with Nginx

If you want to launch the UI using Nginx, open this URL: `http://${host_ip}:${NGINX_PORT}` in your browser to access the frontend.

## 🚀 Launch the Conversational UI (Optional)

To access the Conversational UI (react based) frontend, modify the UI service in the `compose.yaml` file. Replace `chaqna-gaudi-ui-server` service with the `chatqna-gaudi-conversation-ui-server` service as per the config below:

```yaml
chaqna-gaudi-conversation-ui-server:
  image: opea/chatqna-conversation-ui:latest
  container_name: chatqna-gaudi-conversation-ui-server
  environment:
    - APP_BACKEND_SERVICE_ENDPOINT=${BACKEND_SERVICE_ENDPOINT}
    - APP_DATA_PREP_SERVICE_URL=${DATAPREP_SERVICE_ENDPOINT}
  ports:
    - "5174:80"
  depends_on:
    - chaqna-gaudi-backend-server
  ipc: host
  restart: always
```

Once the services are up, open the following URL in your browser: http://{host_ip}:5174. By default, the UI runs on port 80 internally. If you prefer to use a different host port to access the frontend, you can modify the port mapping in the `compose.yaml` file as shown below:

```yaml
  chaqna-gaudi-conversation-ui-server:
    image: opea/chatqna-conversation-ui:latest
    ...
    ports:
      - "80:80"
```

![project-screenshot](../../../../assets/img/chat_ui_init.png)

Here is an example of running ChatQnA:

![project-screenshot](../../../../assets/img/chat_ui_response.png)

Here is an example of running ChatQnA with Conversational UI (React):

![project-screenshot](../../../../assets/img/conversation_ui_response.png)