Switch to sanic from flask.

build/requirements.txt

@@ -1,7 +1,7 @@
 autopep8
 pygame==2.0.1
-flask
-flask-cors
+sanic
+sanic-cors
 mutagen
 sounddevice
 autopep8

web_server.py

@@ -1,5 +1,13 @@
-from flask import Flask, render_template, send_from_directory, request, jsonify, abort
-from flask_cors import CORS
+from sanic import Sanic
+from sanic.exceptions import NotFound, abort
+from sanic.response import html, text, file, redirect
+from sanic.response import json as resp_json
+from sanic_cors import CORS
+
+from jinja2 import Environment, FileSystemLoader
+from urllib.parse import unquote
+# , render_template, send_from_directory, request, jsonify, abort
+#from flask_cors import CORS
 from setproctitle import setproctitle
 import logging
 from typing import Any, Optional, List
@@ -7,13 +15,22 @@ from multiprocessing.queues import Queue
 from queue import Empty
 from time import sleep
 import json
+import os
 
 from helpers.os_environment import isBundelled, isMacOS
 from helpers.logging_manager import LoggingManager
 from helpers.device_manager import DeviceManager
 from helpers.state_manager import StateManager
+from helpers.the_terminator import Terminator
 
-app = Flask(__name__, static_url_path="")
+env = Environment(loader=FileSystemLoader('%s/ui-templates/' % os.path.dirname(__file__)))
+app = Sanic("BAPSicle Web Server")
+
+
+def render_template(file, data, status=200):
+    template = env.get_template(file)
+    html_content = template.render(data=data)
+    return html(html_content, status=status)
 
 
 logger: LoggingManager
@@ -28,14 +45,14 @@ player_from_q: List[Queue] = []
 # General UI Endpoints
 
 
-@app.errorhandler(404)
-def page_not_found(e: Any):
+@app.exception(NotFound)
+def page_not_found(request, e: Any):
     data = {"ui_page": "404", "ui_title": "404"}
-    return render_template("404.html", data=data), 404
+    return render_template("404.html", data=data, status=404)
 
 
 @app.route("/")
-def ui_index():
+def ui_index(request):
     data = {
         "ui_page": "index",
         "ui_title": "",
@@ -47,7 +64,7 @@ def ui_index():
 
 
 @app.route("/status")
-def ui_status():
+def ui_status(request):
     channel_states = []
     for i in range(server_state.state["num_channels"]):
         channel_states.append(status(i))
@@ -58,7 +75,7 @@ def ui_status():
 
 
 @app.route("/config/player")
-def ui_config_player():
+def ui_config_player(request):
     channel_states = []
     for i in range(server_state.state["num_channels"]):
         channel_states.append(status(i))
@@ -75,7 +92,7 @@ def ui_config_player():
 
 
 @app.route("/config/server")
-def ui_config_server():
+def ui_config_server(request):
     data = {
         "ui_page": "server",
         "ui_title": "Server Config",
@@ -86,7 +103,7 @@ def ui_config_server():
 
 
 @app.route("/config/server/update", methods=["POST"])
-def ui_config_server_update():
+def ui_config_server_update(request):
     server_state.update("server_name", request.form["name"])
     server_state.update("host", request.form["host"])
     server_state.update("port", int(request.form["port"]))
@@ -101,11 +118,11 @@ def ui_config_server_update():
     server_state.update("myradio_base_url", request.form["myradio_base_url"])
     server_state.update("myradio_api_url", request.form["myradio_api_url"])
     # stopServer()
-    return ui_config_server()
+    return ui_config_server(request)
 
 
 @app.route("/logs")
-def ui_logs_list():
+def ui_logs_list(request):
     data = {
         "ui_page": "logs",
         "ui_title": "Logs",
@@ -116,7 +133,7 @@ def ui_logs_list():
 
 
 @app.route("/logs/<path:path>")
-def ui_logs_render(path):
+def ui_logs_render(request, path):
     log_file = open("logs/{}.log".format(path))
     data = {
         "logs": log_file.read().splitlines(),
@@ -131,99 +148,99 @@ def ui_logs_render(path):
 # Just useful for messing arround without presenter / websockets.
 
 
-@app.route("/player/<int:channel>/<command>")
-def player_simple(channel: int, command: str):
+@app.route("/player/<channel:int>/<command>")
+def player_simple(request, channel: int, command: str):
 
     simple_endpoints = ["play", "pause", "unpause", "stop", "unload", "clear"]
     if command in simple_endpoints:
         player_to_q[channel].put("UI:" + command.upper())
-        return ui_status()
+        return redirect("/status")
 
-    return page_not_found()
+    abort(404)
 
 
-@app.route("/player/<int:channel>/seek/<float:pos>")
-def player_seek(channel: int, pos: float):
+@app.route("/player/<channel:int>/seek/<pos:float>")
+def player_seek(request, channel: int, pos: float):
 
     player_to_q[channel].put("UI:SEEK:" + str(pos))
 
-    return ui_status()
+    return redirect("/status")
 
 
-@app.route("/player/<int:channel>/load/<int:channel_weight>")
-def player_load(channel: int, channel_weight: int):
+@app.route("/player/<channel:int>/load/<channel_weight:int>")
+def player_load(request, channel: int, channel_weight: int):
 
     player_to_q[channel].put("UI:LOAD:" + str(channel_weight))
-    return ui_status()
+    return redirect("/status")
 
 
-@app.route("/player/<int:channel>/remove/<int:channel_weight>")
-def player_remove(channel: int, channel_weight: int):
+@app.route("/player/<channel:int>/remove/<channel_weight:int>")
+def player_remove(request, channel: int, channel_weight: int):
     player_to_q[channel].put("UI:REMOVE:" + str(channel_weight))
 
-    return ui_status()
+    return redirect("/status")
 
 
-@app.route("/player/<int:channel>/output/<name>")
-def player_output(channel: int, name: Optional[str]):
-    player_to_q[channel].put("UI:OUTPUT:" + str(name))
-    return ui_config_player()
+@app.route("/player/<channel:int>/output/<name:string>")
+def player_output(request, channel: int, name: Optional[str]):
+    player_to_q[channel].put("UI:OUTPUT:" + unquote(str(name)))
+    return redirect("/config/player")
 
 
-@app.route("/player/<int:channel>/autoadvance/<int:state>")
-def player_autoadvance(channel: int, state: int):
+@app.route("/player/<channel:int>/autoadvance/<state:int>")
+def player_autoadvance(request, channel: int, state: int):
     player_to_q[channel].put("UI:AUTOADVANCE:" + str(state))
-    return ui_status()
+    return redirect("/status")
 
 
-@app.route("/player/<int:channel>/repeat/<state>")
-def player_repeat(channel: int, state: str):
+@app.route("/player/<channel:int>/repeat/<state:string>")
+def player_repeat(request, channel: int, state: str):
     player_to_q[channel].put("UI:REPEAT:" + state.upper())
-    return ui_status()
+    return redirect("/status")
 
 
-@app.route("/player/<int:channel>/playonload/<int:state>")
-def player_playonload(channel: int, state: int):
+@app.route("/player/<channel:int>/playonload/<state:int>")
+def player_playonload(request, channel: int, state: int):
     player_to_q[channel].put("UI:PLAYONLOAD:" + str(state))
-    return ui_status()
+    return redirect("/status")
 
 
-@app.route("/player/<int:channel>/status")
-def player_status_json(channel: int):
+@app.route("/player/<channel:int>/status")
+def player_status_json(request, channel: int):
 
-    return jsonify(status(channel))
+    return resp_json(status(channel))
 
 
 @app.route("/player/all/stop")
-def player_all_stop():
+def player_all_stop(request):
 
     for channel in player_to_q:
         channel.put("UI:STOP")
-    return ui_status()
+    return redirect("/status")
 
 
 # Show Plan Functions
 
 @app.route("/plan/load/<int:timeslotid>")
-def plan_load(timeslotid: int):
+def plan_load(request, timeslotid: int):
 
     for channel in player_to_q:
         channel.put("UI:GET_PLAN:" + str(timeslotid))
 
-    return ui_status()
+    return redirect("/status")
 
 
 @app.route("/plan/clear")
-def plan_clear():
+def plan_clear(request):
     for channel in player_to_q:
         channel.put("UI:CLEAR")
-    return ui_status()
+    return redirect("/status")
 
 
 # API Proxy Endpoints
 
 @app.route("/plan/list")
-def api_list_showplans():
+def api_list_showplans(request):
 
     while not api_from_q.empty():
         api_from_q.get()  # Just waste any previous status responses.
@@ -235,7 +252,7 @@ def api_list_showplans():
             response = api_from_q.get_nowait()
             if response.startswith("LIST_PLANS:"):
                 response = response[response.index(":") + 1:]
-                return response
+                return text(response)
 
         except Empty:
             pass
@@ -244,7 +261,7 @@ def api_list_showplans():
 
 
 @app.route("/library/search/<type>")
-def api_search_library(type: str):
+def api_search_library(request, type: str):
 
     if type not in ["managed", "track"]:
         abort(404)
@@ -253,17 +270,17 @@ def api_search_library(type: str):
         api_from_q.get()  # Just waste any previous status responses.
 
     params = json.dumps(
-        {"title": request.args.get(
-            "title"), "artist": request.args.get("artist")}
+        {"title": request.args.get("title"), "artist": request.args.get("artist")}
     )
-    api_to_q.put("SEARCH_TRACK:{}".format(params))
+    command = "SEARCH_TRACK:{}".format(params)
+    api_to_q.put(command)
 
     while True:
         try:
             response = api_from_q.get_nowait()
             if response.startswith("SEARCH_TRACK:"):
-                response = response.split(":", 1)[1]
-                return response
+                response = response[len(command)+1:]
+                return text(response)
 
         except Empty:
             pass
@@ -271,8 +288,8 @@ def api_search_library(type: str):
         sleep(0.02)
 
 
-@app.route("/library/playlists/<type>")
-def api_get_playlists(type: str):
+@app.route("/library/playlists/<type:string>")
+def api_get_playlists(request, type: str):
 
     if type not in ["music", "aux"]:
         abort(401)
@@ -288,7 +305,7 @@ def api_get_playlists(type: str):
             response = api_from_q.get_nowait()
             if response.startswith(command):
                 response = response.split(":", 1)[1]
-                return response
+                return text(response)
 
         except Empty:
             pass
@@ -296,8 +313,8 @@ def api_get_playlists(type: str):
         sleep(0.02)
 
 
-@app.route("/library/playlist/<type>/<library_id>")
-def api_get_playlist(type: str, library_id: str):
+@app.route("/library/playlist/<type:string>/<library_id:string>")
+def api_get_playlist(request, type: str, library_id: str):
 
     if type not in ["music", "aux"]:
         abort(401)
@@ -315,7 +332,7 @@ def api_get_playlist(type: str, library_id: str):
                 response = response[len(command) + 1:]
                 if response == "null":
                     abort(401)
-                return response
+                return text(response)
 
         except Empty:
             pass
@@ -327,43 +344,28 @@ def api_get_playlist(type: str, library_id: str):
 
 
 @app.route("/status-json")
-def json_status():
+def json_status(request):
     channel_states = []
     for i in range(server_state.state["num_channels"]):
         channel_states.append(status(i))
-    return {"server": server_state.state, "channels": channel_states}
+    return resp_json({"server": server_state.state, "channels": channel_states})
 
 
 # Get audio for UI to generate waveforms.
 
 
-@app.route("/audiofile/<type>/<int:id>")
-def audio_file(type: str, id: int):
+@app.route("/audiofile/<type:string>/<id:int>")
+async def audio_file(request, type: str, id: int):
     if type not in ["managed", "track"]:
         abort(404)
-    return send_from_directory("music-tmp", type + "-" + str(id) + ".mp3")
+    return await file("music-tmp/" + type + "-" + str(id) + ".mp3")
 
 
 # Static Files
-
-@app.route("/favicon.ico")
-def serve_favicon():
-    return send_from_directory("ui-static", "favicon.ico")
-
-
-@app.route("/static/<path:path>")
-def serve_static(path: str):
-    return send_from_directory("ui-static", path)
-
-
-@app.route("/presenter/")
-def serve_presenter_index():
-    return send_from_directory("presenter-build", "index.html")
-
-
-@app.route("/presenter/<path:path>")
-def serve_presenter_static(path: str):
-    return send_from_directory("presenter-build", path)
+app.static("/favicon.ico", "./ui-static/favicon.ico", name="ui-favicon")
+app.static("/static", "./ui-static", name="ui-static")
+app.static("/presenter/", "./presenter-build/index.html", strict_slashes=True)
+app.static("/presenter", "./presenter-build")
 
 
 # Helper Functions
@@ -398,7 +400,7 @@ def status(channel: int):
 
 
 @app.route("/quit")
-def quit():
+def quit(request):
     # stopServer()
     return "Shutting down..."
 
@@ -413,19 +415,29 @@ def WebServer(player_to: List[Queue], player_from: List[Queue], api_to: Queue, a
     api_to_q = api_to
     server_state = state
 
-    process_title = "WebServer"
+    process_title = "Web Server"
     setproctitle(process_title)
     CORS(app, supports_credentials=True)  # Allow ALL CORS!!!
 
-    if not isBundelled():
-        log = logging.getLogger("werkzeug")
-        log.disabled = True
+    # if not isBundelled():
+    #    log = logging.getLogger("werkzeug")
+    #    log.disabled = True
 
-    app.logger.disabled = True
+    #app.logger.disabled = True
+
+    terminate = Terminator()
+    while not terminate.terminate:
+        try:
             app.run(
                 host=server_state.state["host"],
                 port=server_state.state["port"],
                 debug=True,
-        use_reloader=False,
-        threaded=False  # While API handles are singlethreaded.
+                workers=1,
+                auto_reload=False
+
+                # use_reloader=False,
+                # threaded=False  # While API handles are singlethreaded.
             )
+        except Exception:
+            break
+    app.stop()