Create attractive VASL scenarios, with loads of useful information embedded to assist with game play.
https://vasl-templates.org
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96 lines
3.7 KiB
96 lines
3.7 KiB
#!/usr/bin/env python3
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""" Run the webapp server. """
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import os
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import threading
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import urllib.request
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import time
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import glob
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import click
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# ---------------------------------------------------------------------
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@click.command()
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@click.option( "--addr","-a","bind_addr", help="Webapp server address (host:port)." )
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@click.option( "--force-init-delay", default=0, help="Force the webapp to initialize (#seconds delay)." )
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@click.option( "--debug","flask_debug", is_flag=True, default=False, help="Run Flask in debug mode." )
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def main( bind_addr, force_init_delay, flask_debug ):
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"""Run the vasl-templates webapp server."""
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# initialize
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from vasl_templates.webapp import app
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flask_port = None
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if bind_addr:
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words = bind_addr.split( ":" )
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flask_host = words[0]
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if len(words) > 1:
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flask_port = words[1]
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else:
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flask_host = app.config.get( "FLASK_HOST", "localhost" )
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if not flask_port:
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flask_port = app.config.get( "FLASK_PORT_NO" )
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if not flask_debug:
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flask_debug = app.config.get( "FLASK_DEBUG", False )
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# validate the configuration
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if not flask_host:
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raise RuntimeError( "The server host was not set." )
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if not flask_port:
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raise RuntimeError( "The server port was not set." )
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# monitor extra files for changes
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extra_files = []
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fspecs = [ "static/", "static/css/", "static/help/", "templates/", "config/" ]
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fspecs.extend( [
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"data/default-template-pack/",
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"data/default-template-pack/extras/", "data/default-template-pack/extras/kgs/"
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] )
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fspecs.extend( [ "tests/control_tests_servicer.py", "tests/proto/generated/" ] )
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for fspec in fspecs:
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fspec = os.path.abspath( os.path.join( os.path.dirname(__file__), fspec ) )
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if os.path.isdir( fspec ):
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files = [ os.path.join(fspec,f) for f in os.listdir(fspec) ]
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files = [ f for f in files if os.path.isfile(f) and os.path.splitext(f)[1] not in [".swp"] ]
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else:
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files = glob.glob( fspec )
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extra_files.extend( files )
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# check if we should force webapp initialization
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if force_init_delay > 0:
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def _start_server():
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"""Force the server to do "first request" initialization."""
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# NOTE: This is not needed when running the desktop app (since it will request the home page),
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# but if we're running just the server (i.e. from the console, or a Docker container), then
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# it's useful to send a request (any request), since this will trigger "first request" initialization
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# (in particular, starting the download thread).
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time.sleep( force_init_delay )
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url = "http://{}:{}/ping".format( flask_host, flask_port )
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with urllib.request.urlopen( url ) as resp:
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_ = resp.read()
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threading.Thread( target=_start_server, daemon=True ).start()
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# run the server
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if flask_debug:
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# NOTE: It's useful to run the webapp using the Flask development server, since it will
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# automatically reload itself when the source files change.
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app.run(
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host=flask_host, port=flask_port,
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debug=flask_debug,
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extra_files=extra_files
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)
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else:
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import waitress
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# FUDGE! Browsers tend to send a max. of 6-8 concurrent requests per server, so we increase
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# the number of worker threads to avoid task queue warnings :-/
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nthreads = app.config.get( "WAITRESS_THREADS", 8 )
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waitress.serve( app,
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host=flask_host, port=flask_port,
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threads=nthreads
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)
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# ---------------------------------------------------------------------
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if __name__ == "__main__":
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main() #pylint: disable=no-value-for-parameter
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