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# -*- coding: utf-8 -*-
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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"""
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kallithea.lib.middleware.wrapper
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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Wrap app to measure request and response time ... all the way to the response
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WSGI iterator has been closed.
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This file was forked by the Kallithea project in July 2014.
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Original author and date, and relevant copyright and licensing information is below:
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:created_on: May 23, 2013
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:author: marcink
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:copyright: (c) 2013 RhodeCode GmbH, and others.
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:license: GPLv3, see LICENSE.md for more details.
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"""
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import logging
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import time
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from kallithea.lib.base import _get_ip_addr, get_path_info
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log = logging.getLogger(__name__)
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class Meter:
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def __init__(self, start_response):
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self._start_response = start_response
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self._start = time.time()
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self._size = 0
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def duration(self):
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return time.time() - self._start
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def start_response(self, status, response_headers, exc_info=None):
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write = self._start_response(status, response_headers, exc_info)
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def metered_write(s):
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self.measure(s)
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write(s)
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return metered_write
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def measure(self, chunk):
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self._size += len(chunk)
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def size(self):
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return self._size
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class ResultIter:
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def __init__(self, result, meter, description):
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self._result_close = getattr(result, 'close', None) or (lambda: None)
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self._next = iter(result).__next__
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self._meter = meter
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self._description = description
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def __iter__(self):
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return self
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def __next__(self):
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chunk = self._next()
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self._meter.measure(chunk)
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return chunk
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def close(self):
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self._result_close()
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log.info("%s responded after %.3fs with %s bytes", self._description, self._meter.duration(), self._meter.size())
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class RequestWrapper(object):
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def __init__(self, app, config):
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self.application = app
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self.config = config
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def __call__(self, environ, start_response):
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meter = Meter(start_response)
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description = "Request from %s for %s" % (
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_get_ip_addr(environ),
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get_path_info(environ),
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)
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try:
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result = self.application(environ, meter.start_response)
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finally:
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log.info("%s responding after %.3fs", description, meter.duration())
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return ResultIter(result, meter, description)
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