langpong

langcode api server version

Langpong CLI

Langpong is a command-line interface tool designed to launch and configure the Langcode API Server. It supports flexible runtime configurations through CLI flags and external config files, making it easy to tailor deployments for various environments.

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🚀 Getting Started

Installation

npm install -g langpong

Usage

langpong [options]

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⚙️ CLI Options

Option	Alias	Description	Default
--config <path>	-c	Path to a JSON/YAML config file	null
--port <number>	-p	Port number for the API server	process.env.PORT
--host <string>	-H	Host/IP address	process.env.HOST
--maxConcurrentRunsPerManager		Max parallel runs per plugin manager	3
--maxConcurrentRunsGlobal		Max parallel runs globally across all managers	10
--logLevel <level>		Logging level (info, debug, error)	info

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📄 Configuration File

You can optionally provide a configuration file using --config. It should be in JSON format and match the structure below:

{
  "manager": {
    "maxConcurrentRunsPerManager": 3,
    "maxConcurrentRunsGlobal": 10,
    "maxIdleTimeMs": 600000,
    "maxLifeTimeMs": 3600000,
    "cleanupIntervalMs": 60000,
    "logsDir": "./logs",
    "logLevel": "info"
  },
  "server": {
    "port": 3000,
    "host": "127.0.0.1"
  },
  "pluginsDefault": []
}

Any CLI arguments will override the values provided in the configuration file.

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🧠 Architecture Overview

• ManagerStore: Handles plugin concurrency, lifecycle, and logging.
• Langpong: Responsible for starting the HTTP server with specified host and port, and delegating tasks to the ManagerStore.
• Deep Merge Strategy: Default config is extended first with the config file (if any), then finally overridden by CLI options.

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Run using:

langpong -c ./config.json

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🧪 Example

langpong -p 8080 -H 0.0.0.0 --maxConcurrentRunsPerManager 5 --logLevel debug

This command starts the server on port 8080, accessible on all interfaces, with concurrency and logging settings customized.

🐳 Docker Support

Pull from Docker Hub

docker pull yourdockerhubusername/langpong:latest

Run Manually

docker run -p 3000:3000 yourdockerhubusername/langpong:latest \
  --config /app/config.json

To mount a config file:

docker run -p 3000:3000 \
  -v $(pwd)/config.json:/app/config.json \
  yourdockerhubusername/langpong:latest \
  --config /app/config.json

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🧱 Docker Compose Example

Create a docker-compose.yml file like this:

version: '3.8'

services:
  langpong:
    image: yourdockerhubusername/langpong:latest
    container_name: langpong-server
    ports:
      - "3000:3000"
    volumes:
      - ./config.json:/app/config.json:ro
    command: ["--config", "/app/config.json"]
    restart: unless-stopped
    environment:
      - LOG_LEVEL=debug

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📦 Version

Current Version: 1.0.3

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📧 Support

For bug reports, suggestions, or feature requests, please open an issue on the GitHub repository.

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📝 License

MIT License. See LICENSE file for details.