147 lines
4.5 KiB
Python
147 lines
4.5 KiB
Python
import os
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import logging
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import typing
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import multiprocessing
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import threading
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import json
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import zlib
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from pony.orm import db_session, commit
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from pony.flask import Pony
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from flask import Flask, flash, request, redirect, url_for, render_template, Response, session
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from .models import *
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UPLOAD_FOLDER = os.path.relpath('uploads')
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LOGS_FOLDER = os.path.relpath('logs')
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os.makedirs(LOGS_FOLDER, exist_ok=True)
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def allowed_file(filename):
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return filename.endswith('multidata')
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app = Flask(__name__)
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Pony(app)
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app.config['UPLOAD_FOLDER'] = UPLOAD_FOLDER
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app.config['MAX_CONTENT_LENGTH'] = 1 * 1024 * 1024 # 1 megabyte limit
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# if you want persistent sessions on your server, make sure you make this a constant in your config.yaml
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app.config["SECRET_KEY"] = os.urandom(32)
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app.config['SESSION_PERMANENT'] = True
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app.config["PONY"] = {
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'provider': 'sqlite',
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'filename': os.path.abspath('db.db3'),
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'create_db': True
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}
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multiworlds = {}
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@app.before_first_request
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def register_session():
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session.permanent = True # technically 31 days after the last visit
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if not session.get("_id", None):
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session["_id"] = uuid4() # uniquely identify each session without needing a login
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class MultiworldInstance():
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def __init__(self, room: Room):
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self.room_id = room.id
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self.process: typing.Optional[multiprocessing.Process] = None
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multiworlds[self.room_id] = self
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def start(self):
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if self.process and self.process.is_alive():
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return False
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logging.info(f"Spinning up {self.room_id}")
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with db_session:
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self.process = multiprocessing.Process(group=None, target=run_server_process,
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args=(self.room_id, app.config["PONY"]),
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name="MultiHost")
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self.process.start()
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def stop(self):
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if self.process:
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self.process.terminate()
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self.process = None
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@app.route('/', methods=['GET', 'POST'])
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def upload_multidata():
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if request.method == 'POST':
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# check if the post request has the file part
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if 'file' not in request.files:
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flash('No file part')
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else:
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file = request.files['file']
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# if user does not select file, browser also
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# submit an empty part without filename
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if file.filename == '':
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flash('No selected file')
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elif file and allowed_file(file.filename):
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try:
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multidata = json.loads(zlib.decompress(file.read()).decode("utf-8-sig"))
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except:
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flash("Could not load multidata. File may be corrupted or incompatible.")
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else:
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seed = Seed(multidata=multidata)
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commit() # place into DB and generate ids
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return redirect(url_for("view_seed", seed=seed.id))
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else:
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flash("Not recognized file format. Awaiting a .multidata file.")
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return render_template("upload_multidata.html")
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@app.route('/seed/<int:seed>')
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def view_seed(seed: int):
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seed = Seed.get(id=seed)
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return render_template("view_seed.html", seed=seed)
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@app.route('/new_room/<int:seed>')
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def new_room(seed: int):
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seed = Seed.get(id=seed)
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room = Room(seed=seed, owner=session["_id"])
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commit()
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return redirect(url_for("host_room", room=room.id))
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def _read_log(path: str):
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if os.path.exists(path):
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with open(path) as log:
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yield from log
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else:
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yield f"Logfile {path} does not exist. " \
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f"Likely a crash during spinup of multiworld instance or it is still spinning up."
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@app.route('/log/<int:room>')
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def display_log(room: int):
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# noinspection PyTypeChecker
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return Response(_read_log(os.path.join("logs", str(room) + ".txt")), mimetype="text/plain;charset=UTF-8")
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processstartlock = threading.Lock()
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@app.route('/hosted/<int:room>', methods=['GET', 'POST'])
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def host_room(room: int):
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room = Room.get(id=room)
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if request.method == "POST":
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if room.owner == session["_id"]:
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cmd = request.form["cmd"]
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Command(room=room, commandtext=cmd)
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commit()
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with db_session:
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multiworld = multiworlds.get(room.id, None)
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if not multiworld:
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multiworld = MultiworldInstance(room)
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with processstartlock:
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multiworld.start()
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return render_template("host_room.html", room=room)
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from WebHost.customserver import run_server_process
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