lexigram-graphql

GraphQL support for Lexigram Framework — Strawberry, Apollo Federation, and subscriptions.

Overview

lexigram-graphql provides a complete GraphQL layer built on Strawberry, with field-level permissions, DataLoaderProtocol batching for N+1 query elimination, WebSocket subscriptions, depth/complexity limiting, persisted queries, and automatic playground disable in production. All services are wired through Lexigram's DI container.

Full documentation: docs.lexigram.dev

Install

uv add lexigram lexigram-web lexigram-graphql
# Optional extras
uv add "lexigram-graphql[starlette]"   # Starlette integration
uv add "lexigram-graphql[subscriptions]"  # WebSocket subscriptions

Quick Start

from lexigram import Application
from lexigram.di.module import Module, module
from lexigram.graphql import GraphQLModule
from lexigram.web import WebModule

import strawberry


@strawberry.type
class Query:
    @strawberry.field
    def hello(self) -> str:
        return "world"


@module(
    imports=[
        WebModule.configure(host="127.0.0.1", port=8000),
        GraphQLModule.configure(query_class=Query),
    ]
)
class AppModule(Module):
    pass


async def main() -> None:
    async with Application.boot(modules=[AppModule]) as app:
        web = await app.container.resolve(WebProvider)
        web.run_server(host="127.0.0.1", port=8000)


if __name__ == "__main__":
    import asyncio
    asyncio.run(main())

GraphQL endpoint: http://127.0.0.1:8000/graphql Playground: http://127.0.0.1:8000/graphql/playground (development only)

Configuration

Zero-config usage: Call GraphQLModule.configure() with no arguments to use all defaults.

Option 1 — YAML file

# application.yaml
graphql:
  server:
    path: "/graphql"
    debug: false
  playground:
    enabled: true
  schema:
    max_depth: 10
    complexity_limit: 1000

Option 2 — Profiles + Environment Variables (recommended)

export LEX_GRAPHQL__PATH=/api/graphql
export LEX_GRAPHQL__DEBUG=true
export LEX_GRAPHQL__DEPTH_LIMIT__MAX_DEPTH=8

Option 3 — Python

from lexigram.graphql import GraphQLModule
from lexigram.graphql.config import GraphQLConfig

config = GraphQLConfig.development()
GraphQLModule.configure(config=config, query_class=Query)

Config reference

Module Factory Methods

Key Features

• Strawberry GraphQL — schema-first GraphQL with type annotations
• DataLoaderProtocol batching — eliminates N+1 queries with per-request caching
• WebSocket subscriptions — graphql-transport-ws protocol support
• Depth and complexity limiting — prevents malicious or expensive queries
• Field-level permissions — AbstractPermission subclassing for fine-grained access
• Automatic persisted queries (APQ) — reduces payload size for repeated queries
• Schema baseline checking — detect breaking changes at boot via SDL comparison

Testing

from lexigram import Application
from lexigram.graphql import GraphQLModule

async with Application.boot(modules=[GraphQLModule.stub()]) as app:
    executor = await app.container.resolve(GraphQLExecutorProtocol)
    assert executor is not None

Key Source Files