110 lines
3.2 KiB
Python
110 lines
3.2 KiB
Python
import sys
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import io
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import argparse
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from threading import Thread, Event
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from multiprocessing import Queue
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from os import fdopen, path
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from . import argparser_wrapper
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from . import views
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from . import context
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class QueuedOut(io.StringIO):
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def __init__(self, name, shared_queue, *args, **kwargs):
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super().__init__(*args, **kwargs)
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self.name = name
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self.queue = shared_queue
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def write(self, b, *args, **kwargs):
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# flush at newline
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lines = b.split('\n')
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for line in lines[:-1]:
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super().write(line)
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self.flush()
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super().write(lines[-1])
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def flush(self):
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value = self.getvalue()
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if len(value) > 1:
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self.queue.put((self.name, value))
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self.seek(0)
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self.truncate(0)
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class FlaskThread(Thread):
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def __init__(self, port, host):
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super().__init__()
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self.port = port
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self.host = host
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def run(self):
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views.app.run(port=self.port, threaded=True, host=self.host)
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class Output():
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def __init__(self, queue, restart):
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self._queue = queue
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self._restart = restart
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self.cache = []
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def get_output(self):
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def gen_output():
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while not self._restart.is_set():
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msg_type, line = self._queue.get()
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self.cache.append((msg_type, line))
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yield (msg_type, line)
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return gen_output()
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def start_module(name, is_module):
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views.app.restart.clear()
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views.app.name = path.basename(name)
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views.app.desc = ""
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views.app.actions = []
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views.app.queue = Queue()
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ioout = QueuedOut("out", views.app.queue)
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ioerr = QueuedOut("err", views.app.queue)
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views.app.output = Output(views.app.queue, views.app.restart)
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views.app.actionQueue = Queue() # This holds only one Argparser Object
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views.app.namespaceQueue = Queue() # This hold only one Namespace Object
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argparser = argparser_wrapper.argParserGenerator(views.app.actionQueue, views.app.namespaceQueue)
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views.app.module_process = context.Context(
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"sub",
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name,
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ioout,
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ioerr,
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overwritten_modules={'argparse': argparser},
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is_module = is_module
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)
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views.app.module_process.start()
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views.app.mutex_groups, views.app.actions, name, views.app.desc = views.app.actionQueue.get()
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if name:
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views.app.name = name
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views.app.module_process.join()
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ioerr.write("Process stopped ({})\n".format(views.app.module_process.exitcode))
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views.app.restart.wait()
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def main():
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parser = argparse.ArgumentParser(description="a Webbased frontend for ARgparse in Python")
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parser.add_argument('--port', '-p', default=5000, help="The port to listen on (default 5000)")
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parser.add_argument('--host', default="0.0.0.0", help="The host to bind to (default 0.0.0.0)")
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parser.add_argument('--module', '-m', action="store_true", help="If set, loads a module instead of a file")
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parser.add_argument('file', help="File to run")
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args = parser.parse_args()
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flask_thread = FlaskThread(args.port, args.host)
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flask_thread.start()
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views.app.restart = Event()
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while True:
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start_module(args.file, args.module)
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if __name__ == "__main__":
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main()
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