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import time
from datetime import datetime
from pyinstrument import Profiler
try:
import falcon
PROFILING = True # Use environment variable for setting it
except ImportError:
print("This example requires falcon.")
print("Install using `pip install falcon`.")
exit(1)
class ProfilerMiddleware:
filename = "pyinstrument-profile"
def __init__(self, interval=0.01):
self.profiler = Profiler(interval=interval)
def process_request(self, req, resp):
self.profiler.start()
def process_response(self, req, resp, resource, req_succeeded):
self.profiler.stop()
filename = f"{self.filename}-{datetime.now().strftime('%m%d%Y-%H%M%S')}.html"
with open(filename, "w") as file:
file.write(self.profiler.output_html())
class HelloResource:
def on_get(self, req, resp):
time.sleep(1)
resp.media = "hello"
app = falcon.App()
if PROFILING:
app.add_middleware(ProfilerMiddleware())
app.add_route("/", HelloResource())
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