protollm-api 1.0.3

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LLM API Documentation

This API allows interaction with a distributed LLM architecture using RabbitMQ and Redis. Requests are processed asynchronously by a worker system (LLM-core) that generates responses and saves them to Redis. The API retrieves results from Redis and sends them back to the user.

---

Endpoints

/generate

• Method: POST
• Description: Sends a prompt for single message generation.
• Request Body:

  {
    "job_id": "string",
    "meta": {
      "temperature": 0.2,
      "tokens_limit": 8096,
      "stop_words": [
        "string"
      ],
      "model": "string"
    },
    "content": "string"
  }
  

  • job_id (string): Unique identifier for the task.
  • meta (object): Metadata for generation:
    • temperature (float): The degree of randomness in generation (default 0.2).
    • tokens_limit (integer): Maximum tokens for the response (default 8096).
    • stop_words (list of strings): Words to stop generation.
    • model (string): Model to use for generation.
  • content (string): The input text for generation.
• Response:

  {
    "content": "string"
  }
  

  • content (string): The generated text.

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/chat_completion

• Method: POST
• Description: Sends a conversation history for chat-based completions.
• Request Body:

  {
    "job_id": "string",
    "meta": {
      "temperature": 0.2,
      "tokens_limit": 8096,
      "stop_words": [
        "string"
      ],
      "model": "string"
    },
    "messages": [
      {
        "role": "string",
        "content": "string"
      }
    ]
  }
  

  • job_id (string): Unique identifier for the task.
  • meta (object): Metadata for chat completion:
    • temperature (float): The degree of randomness in responses (default 0.2).
    • tokens_limit (integer): Maximum tokens for the response (default 8096).
    • stop_words (list of strings): Words to stop the generation.
    • model (string): Model to use for chat completion.
  • messages (list of objects): Conversation history:
    • role (string): Role of the message sender ("user", "assistant", etc.).
    • content (string): Message content.
• Response:

  {
    "content": "string"
  }
  

  • content (string): The generated response.

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Environment Variables

These variables must be configured and synchronized with the LLM-core system:

RabbitMQ Configuration

• RABBIT_MQ_HOST: RabbitMQ server hostname or IP.
• RABBIT_MQ_PORT: RabbitMQ server port.
• RABBIT_MQ_LOGIN: RabbitMQ login username.
• RABBIT_MQ_PASSWORD: RabbitMQ login password.
• QUEUE_NAME: Name of the RabbitMQ queue to process tasks.

Redis Configuration

• REDIS_HOST: Redis server hostname or IP.
• REDIS_PORT: Redis server port.
• REDIS_PREFIX: Key prefix for task results in Redis.

Internal LLM-core Configuration

• INNER_LLM_URL: URL for the LLM-core worker service.

Example .env File

# API
CELERY_BROKER_URL=amqp://admin:admin@127.0.0.1:5672/
CELERY_RESULT_BACKEND=redis://127.0.0.1:6379/0
REDIS_HOST=redis
REDIS_PORT=6379
RABBIT_MQ_HOST=rabbitmq
RABBIT_MQ_PORT=5672
RABBIT_MQ_LOGIN=admin
RABBIT_MQ_PASSWORD=admin
WEB_RABBIT_MQ=15672
API_PORT=6672

# RabbitMQ
RABBITMQ_DEFAULT_USER=admin
RABBITMQ_DEFAULT_PASS=admin

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System Architecture

Below is the architecture diagram for the interaction between API, RabbitMQ, LLM-core, and Redis:

+-------------------+       +-----------------+       +----------------+       +-------------------+
|                   |       |                 |       |                |       |                   |
|       API         +------>+    RabbitMQ     +------>+    LLM-core    +------>+      Redis         |
|                   |       |                 |       |                |       |                   |
+-------------------+       +-----------------+       +----------------+       +-------------------+
        ^                             ^                                ^
        |                             |                                |
        |      Requests are queued    |    Worker retrieves tasks     | Results are stored in Redis
        |      Results are polled     |                                |
        +-----------------------------+--------------------------------+

Flow

1. API:

   • Receives requests via endpoints (/generate, /chat_completion).
   • Publishes tasks to RabbitMQ.
   • Polls Redis for results based on task IDs.

2. RabbitMQ:

   • Acts as a queue for task distribution.
   • LLM-core workers subscribe to queues to process tasks.

3. LLM-core:

   • Retrieves tasks from RabbitMQ.
   • Processes prompts or chat completions using LLM models.
   • Stores results in Redis.

4. Redis:

   • Acts as the result storage.
   • API retrieves results from Redis when tasks are completed.

---

Usage

Running the API

1. Configure environment variables in the .env file.
2. Start the API using:

app = FastAPI()

config = Config.read_from_env()

app.include_router(get_router(config))

Running the API Locally (without Docker)

To run the API locally using Uvicorn, use the following command:

uvicorn protollm_api.backend.main:app --host 127.0.0.1 --port 8000 --reload

Or use this main file:

app = FastAPI()

config = Config.read_from_env()

app.include_router(get_router(config))
    
if __name__ == "__main__":
    uvicorn.run("protollm_api.backend.main:app", host="127.0.0.1", port=8000, reload=True)

Example Request

Generate

curl -X POST "http://localhost:8000/generate" -H "Content-Type: application/json" -d '{
  "job_id": "12345",
  "meta": {
    "temperature": 0.5,
    "tokens_limit": 1000,
    "stop_words": ["stop"],
    "model": "gpt-model"
  },
  "content": "What is AI?"
}'

Chat Completion

curl -X POST "http://localhost:8000/chat_completion" -H "Content-Type: application/json" -d '{
  "job_id": "12345",
  "meta": {
    "temperature": 0.5,
    "tokens_limit": 1000,
    "stop_words": ["stop"],
    "model": "gpt-model"
  },
  "messages": [
    {"role": "user", "content": "What is AI?"},
    {"role": "assistant", "content": "Artificial Intelligence is..."}
  ]
}'

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Notes

• Ensure that RABBIT_MQ_HOST, RABBIT_MQ_PORT, REDIS_HOST, and other variables are synchronized between the API and LLM-core containers.
• The system supports distributed scaling by adding more LLM-core workers to the RabbitMQ queue.