request-id-flask

Attach a unique identifier to every HTTP request in your WSGI or ASGI application.

request-id-flask is implemented as a WSGI and ASGI middleware.

The package will do one of two things:

1. Read the X-Request-ID HTTP header from a client HTTP request and return the same X-Request-ID HTTP header in the server HTTP response and is stored in the WSGI environ.

2. Or, when no X-Request-ID HTTP header is present in the client HTTP request, generate a new and unique request_id identifier (using uuid 4) which is stored in the WSGI environ and set as the X-Request-ID HTTP header in the server HTTP responser.

Requirements

• Python 3.6 or above

Installation

You can install the request-id-flask package using pip:

pip install request-id-flask

However, recommended to add it to the requirements.txt file instead, and install using: pip install -r requirements.txt

request-id-flask

Access the request_id

The REQUEST_ID is stored in the request environ dictionary and may be accessed from anywhere this is available in Flask.

Changelog

• Version 0.0.4 adds support for Quart.
• Version 0.0.3 adds support for the app factory pattern.

Flask Usage

from flask import (
    Flask,
    request
)
from request_id import RequestId

app = Flask(__name__)
RequestId(app)


@app.route('/')
def index():
    request_id = request.environ.get('REQUEST_ID', '')
    return str(request_id)

Quart Usage

from quart import (
    Quart,
    request
)
from request_id import RequestId

app = Quart(__name__)
RequestId(app)


@app.route('/')
async def index():
    request_id = request.environ.get('REQUEST_ID', '')
    return await str(request_id)