dvc_test_http_server_session.py

#!/usr/bin/env python
# Requires:
#   pip install werkzeug<1.0 flask flask-httpauth flask-session

from pathlib import Path

from flask import abort, Flask, request, send_file
from flask_session import Session
from flask_httpauth import HTTPBasicAuth, HTTPDigestAuth

app = Flask(__name__)
app.config['SECRET_KEY'] = 'foo'
app.config['SESSION_TYPE'] = 'filesystem'
basic_auth = HTTPBasicAuth()
digest_auth = HTTPDigestAuth()

sess = Session()
sess.init_app(app)

users = {"dvc": "password1"}


def _get_password(username):
    if username in users:
        return users.get(username)
    return False


@basic_auth.get_password
def get_basic_password(username):
    return _get_password(username)


@digest_auth.get_password
def get_digest_password(username):
    return _get_password(username)


def _test_dvc_http(path):
    path = Path(path)
    if request.method in ["HEAD", "GET"]:
        if path.exists():
            return send_file(path)
        else:
            abort(404)
    elif request.method == "POST":
        try:
            path.parent.mkdir(parents=True, exist_ok=True)
            with open(path, "wb") as fd:
                fd.write(request.data)
            return str(path)
        except Exception:
            abort(403)
    abort(405)


@app.route("/public/<path:path>", methods=["GET", "POST"])
def test_public(path):
    return _test_dvc_http(path)


@app.route("/basic/<path:path>", methods=["GET", "POST"])
@basic_auth.login_required
def test_basic(path):
    return _test_dvc_http(path)


@app.route("/digest/<path:path>", methods=["GET", "POST"])
@digest_auth.login_required
def test_digest(path):
    return _test_dvc_http(path)


if __name__ == '__main__':
    app.run()

note: flask-session requires older werkzeug version for filesystem session storage