leandrobrunner / tartiflette

GraphQL Engine built with Python 3.6+ / asyncio

Tartiflette is a GraphQL Server implementation built with Python 3.6+.

Motivation

Read this blogpost about our motivations TL; DR We reached the limits of Graphene, we wanted to build something which met certain requirements:

• Offers a better developer experience that respects the Python mindset
• Uses SDL (Schema Definition Language)
• Uses asyncio as the sole execution engine
• Be 100% open source

Status

The first milestone is behind us, we are now on the road to the milestone 2.

DNA

• Define the GraphQL schema with the brand new SDL (Schema Definition Language).
• Performance oriented: Performance is the core of our work.
• Simple is better than complex: Built with the Zen of Python in mind. No over-engineering.

Discover Tartiflette with our fabulous tutorial on https://tartiflette.io/docs/tutorial/getting-started

Summary

• Usage
• Installation
  • Installation dependencies
• Tartiflette over HTTP
• Roadmaps
• Known issues

Usage

import asyncio

from tartiflette import Engine, Resolver

@Resolver("Query.hello")
async def resolver_hello(parent, args, ctx, info):
    return "hello " + args["name"]


async def run():
    tftt_engine = Engine("""
    type Query {
        hello(name: String): String
    }
    """)

    result = await tftt_engine.execute(
        query='query { hello(name: "Chuck") }'
    )

    print(result)
    # {'data': {'hello': 'hello Chuck'}}

if __name__ == "__main__":
    loop = asyncio.get_event_loop()
    loop.run_until_complete(run())

More details on the API Documentation

Installation

Tartiflette is available on pypi.org.

pip install tartiflette

Installation dependencies

As Tartiflette based its Executor engine on libgraphqlparser. You'll need these following commands on your environment to use the library. cmake, bison and flex.

MacOSX

brew install cmake flex bison

Ubuntu

apt-get install cmake flex bison

Tartiflette over HTTP

Discover our implementation of tartiflette over HTTP called tartiflette-aiohttp.

Overview

pip install tartiflette-aiohttp

from aiohttp import web
from tartiflette_aiohttp import register_graphql_handlers

sdl = """
    type Query {
        hello(name: String): String
    }
"""

ctx = {
    'user_service': user_service
}

web.run_app(
    register_graphql_handlers(
        app=web.Application(),
        engine_sdl=sdl,
        engine_schema_name="default",
        executor_context=ctx,
        executor_http_endpoint='/graphql',
        executor_http_methods=['POST', 'GET']
    )
)

Roadmaps

• Milestone 1 (Released)
• Milestone 2 - Work in progress

How to contribute to the documentation?

As you may know, the documentation is hosted on https://tartiflette.io. This fabulous website is built thanks to another amazing tool, docusaurus.

The content of the documentation is hosted in this repository, to be as close as possible to the code. You will find everything you need/want in the folder /docs.

How to run the website locally?

We built a docker image for the documentation (dailymotion/tartiflette.io on docker hub), which allow us to provide you an easy way to launch the documentation locally, without installing a specific version of node.

prerequisite:

• Docker
• Docker Compose
• Make

make run-docs

Every change you will make in the /docs folder will be automatically hot reloaded. 🎉

Known issues

• Schema directives aren't executed