APIStar Memory Leak

leak.py

import tracemalloc

from apistar import App, Route, http

tracemalloc.start(1)


snapshot1 = tracemalloc.take_snapshot()

def welcome():
    snapshot2 = tracemalloc.take_snapshot()
    top_stats = snapshot2.compare_to(snapshot1, 'lineno')
    print("[ Top 10 differences ]")
    for stat in top_stats[:10]:
        print(stat)

    return {'message': 'Welcome to API Star!'}

class LeakingHook:
    def on_request(self, req: http.Request):
        pass

routes = [
    Route('/', method='GET', handler=welcome)
]

app = App(routes=routes, event_hooks=[LeakingHook])


if __name__ == '__main__':
    app.serve('127.0.0.1', 5000)

leak_w_traceback.py

import tracemalloc

from apistar import App, Route, http

tracemalloc.start(25)


snapshot1 = tracemalloc.take_snapshot()

def welcome():
    global snapshot1
    snapshot2 = tracemalloc.take_snapshot()
    top_stats = snapshot2.compare_to(snapshot1, 'traceback')
    stat = top_stats[0]
    print("%s memory blocks: %.1f KiB" % (stat.count, stat.size / 1024))
    for line in stat.traceback.format():
        print(line)

    snapshot1 = snapshot2

    return {'message': 'Welcome to API Star!'}

class LeakingHook:
    def on_request(self, req: http.Request):
        pass

routes = [
    Route('/', method='GET', handler=welcome)
]

app = App(routes=routes, event_hooks=[LeakingHook])


if __name__ == '__main__':
    app.serve('127.0.0.1', 5000)