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manage.py
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manage.py
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"""
This file is used to run the application.
"""
from datetime import datetime, timezone
import os
import logging
from flask_jwt_extended import (
create_access_token,
get_jwt,
get_jwt_identity,
set_access_cookies,
verify_jwt_in_request,
)
import psutil
import mimetypes
from flask import Response, request
import waitress
import setproctitle
from app.api import create_api
from app.arg_handler import ProcessArgs
from app.lib.index import IndexEverything
from app.plugins.register import register_plugins
from app.settings import FLASKVARS, TCOLOR, Info
from app.setup import load_into_mem, run_setup
from app.start_info_logger import log_startup_info
from app.utils.filesystem import get_home_res_path
from app.utils.paths import getClientFilesExtensions
from app.utils.threading import background
# Load mimetypes for the web client's static files
# Loading mimetypes should happen automatically but
# sometimes the mimetypes are not loaded correctly
# eg. when the Registry is messed up on Windows.
# See the following issues:
# https://github.com/swingmx/swingmusic/issues/137
mimetypes.add_type("text/css", ".css")
mimetypes.add_type("text/javascript", ".js")
mimetypes.add_type("text/plain", ".txt")
mimetypes.add_type("text/html", ".html")
mimetypes.add_type("image/webp", ".webp")
mimetypes.add_type("image/svg+xml", ".svg")
mimetypes.add_type("image/png", ".png")
mimetypes.add_type("image/vnd.microsoft.icon", ".ico")
mimetypes.add_type("image/gif", ".gif")
mimetypes.add_type("font/woff", ".woff")
mimetypes.add_type("application/manifest+json", ".webmanifest")
# logging.disable(logging.CRITICAL)
# werkzeug = logging.getLogger("werkzeug")
# werkzeug.setLevel(logging.ERROR)
# # logging.basicConfig()
# logging.getLogger("sqlalchemy.engine").setLevel(logging.ERROR)
# Background tasks
@background
def bg_run_setup():
IndexEverything()
# @background
# def start_watchdog():
# WatchDog().run()
@background
def run_swingmusic():
log_startup_info()
bg_run_setup()
register_plugins()
# start_watchdog()
setproctitle.setproctitle(f"swingmusic ::{FLASKVARS.get_flask_port()}")
# Setup function calls
Info.load()
ProcessArgs()
run_setup()
load_into_mem()
run_swingmusic()
# Create the Flask app
app = create_api()
app.static_folder = get_home_res_path("client")
# INFO: Routes that don't need authentication
whitelisted_routes = {
"/auth/login",
"/auth/users",
"/auth/pair",
"/auth/logout",
"/auth/refresh",
"/docs",
}
blacklist_extensions = {".webp"}.union(getClientFilesExtensions())
def skipAuthAction():
"""
Skips the JWT verification for the current request.
"""
if request.path == "/" or any(
request.path.endswith(ext) for ext in blacklist_extensions
):
return True
# if request path starts with any of the blacklisted routes, don't verify jwt
if any(request.path.startswith(route) for route in whitelisted_routes):
return True
return False
@app.before_request
def verify_auth():
"""
Verifies the JWT token before each request.
"""
if skipAuthAction():
return
verify_jwt_in_request()
@app.after_request
def refresh_expiring_jwt(response: Response):
"""
Refreshes the cookies JWT token after each request.
"""
# INFO: If the request has an Authorization header, don't refresh the jwt
# Request is probably from the mobile client or a third party
if skipAuthAction() or request.headers.get("Authorization"):
return response
try:
exp_timestamp = get_jwt()["exp"]
now = datetime.now(timezone.utc)
target_timestamp = datetime.timestamp(now) + 60 * 60 * 24 * 7 # 7 days
if target_timestamp > exp_timestamp:
access_token = create_access_token(identity=get_jwt_identity())
set_access_cookies(response, access_token)
return response
except (RuntimeError, KeyError):
return response
@app.route("/<path:path>")
def serve_client_files(path: str):
"""
Serves the static files in the client folder.
"""
js_or_css = path.endswith(".js") or path.endswith(".css")
if not js_or_css:
return app.send_static_file(path)
gzipped_path = path + ".gz"
user_agent = request.headers.get("User-Agent")
# INFO: Safari doesn't support gzip encoding
# See issue: https://github.com/swingmx/swingmusic/issues/155
is_safari = user_agent.find("Safari") >= 0 and user_agent.find("Chrome") < 0
if is_safari:
return app.send_static_file(path)
accepts_gzip = request.headers.get("Accept-Encoding", "").find("gzip") >= 0
if accepts_gzip:
if os.path.exists(os.path.join(app.static_folder, gzipped_path)):
response = app.make_response(app.send_static_file(gzipped_path))
response.headers["Content-Encoding"] = "gzip"
return response
return app.send_static_file(path)
@app.route("/")
def serve_client():
"""
Serves the index.html file at `client/index.html`.
"""
return app.send_static_file("index.html")
prev_memory = 0
# INFO: For debugging memory usage
# @app.after_request
def print_memory_usage(response: Response):
# INFO: Ignore assets
if (
request.path.startswith("/img")
or request.path.endswith(".js")
or request.path.endswith(".css")
):
return response
process = psutil.Process(os.getpid())
global prev_memory
current_mem = process.memory_info().rss
diff = (current_mem - prev_memory) / 1024**2
prev_memory = current_mem
# INFO: Print memory usage (highlights if diff is more than 0.1 MB)
print(
f"\n{request.path} | TOTAL: {current_mem/1024**2} MB | DIFF: {TCOLOR.FAIL if diff > 0.1 else ''}{diff} MB{TCOLOR.ENDC if diff > 0.1 else ''} \n"
)
return response
if __name__ == "__main__":
host = FLASKVARS.get_flask_host()
port = FLASKVARS.get_flask_port()
waitress.serve(
app,
host=host,
port=port,
threads=10,
ipv6=True,
ipv4=True,
)