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https://github.com/searxng/searxng.git
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86b4d2f2d0
We have been using a static type checker (pyright) for a long time, but its check was not yet a prerequisite for passing the quality gate. It was checked in the CI, but the error messages were only logged. As is always the case in life, with checks that you have to do but which have no consequences; you neglect them :-) We didn't activate the checks back then because we (even today) have too much monkey patching in our code (not only in the engines, httpx and others objects are also affected). We want to replace monkey patching with clear interfaces for a long time, the basis for this is increased typing and we can only achieve this if we make type checking an integral part of the quality gate. This PR activates the type check; in order to pass the check, a few typings were corrected in the code, but most type inconsistencies were deactivated via inline comments. This was particularly necessary in places where the code uses properties that stick to the objects (monkey patching). The sticking of properties only happens in a few places, but the access to these properties extends over the entire code, which is why there are many `# type: ignore` markers in the code ... which we will hopefully be able to remove again successively in the future. Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>
167 lines
4.6 KiB
Python
167 lines
4.6 KiB
Python
# SPDX-License-Identifier: AGPL-3.0-or-later
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# pylint: disable=missing-module-docstring
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import decimal
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import threading
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from searx import logger
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__all__ = ["Histogram", "HistogramStorage", "CounterStorage"]
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logger = logger.getChild('searx.metrics')
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class Histogram: # pylint: disable=missing-class-docstring
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_slots__ = '_lock', '_size', '_sum', '_quartiles', '_count', '_width'
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def __init__(self, width=10, size=200):
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self._lock = threading.Lock()
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self._width = width
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self._size = size
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self._quartiles = [0] * size
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self._count = 0
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self._sum = 0
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def observe(self, value):
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q = int(value / self._width)
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if q < 0: # pylint: disable=consider-using-max-builtin
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# Value below zero is ignored
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q = 0
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if q >= self._size:
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# Value above the maximum is replaced by the maximum
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q = self._size - 1
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with self._lock:
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self._quartiles[q] += 1
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self._count += 1
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self._sum += value
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@property
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def quartiles(self):
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return list(self._quartiles)
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@property
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def count(self):
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return self._count
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@property
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def sum(self):
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return self._sum
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@property
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def average(self):
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with self._lock:
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if self._count != 0:
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return self._sum / self._count
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return 0
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@property
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def quartile_percentage(self):
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'''Quartile in percentage'''
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with self._lock:
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if self._count > 0:
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return [int(q * 100 / self._count) for q in self._quartiles]
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return self._quartiles
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@property
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def quartile_percentage_map(self):
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result = {}
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# use Decimal to avoid rounding errors
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x = decimal.Decimal(0)
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width = decimal.Decimal(self._width)
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width_exponent = -width.as_tuple().exponent # type: ignore
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with self._lock:
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if self._count > 0:
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for y in self._quartiles:
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yp = int(y * 100 / self._count) # pylint: disable=invalid-name
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if yp != 0:
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result[round(float(x), width_exponent)] = yp
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x += width
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return result
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def percentage(self, percentage):
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# use Decimal to avoid rounding errors
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x = decimal.Decimal(0)
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width = decimal.Decimal(self._width)
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stop_at_value = decimal.Decimal(self._count) / 100 * percentage
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sum_value = 0
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with self._lock:
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if self._count > 0:
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for y in self._quartiles:
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sum_value += y
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if sum_value >= stop_at_value:
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return x
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x += width
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return None
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def __repr__(self):
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return "Histogram<avg: " + str(self.average) + ", count: " + str(self._count) + ">"
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class HistogramStorage: # pylint: disable=missing-class-docstring
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__slots__ = 'measures', 'histogram_class'
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def __init__(self, histogram_class=Histogram):
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self.clear()
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self.histogram_class = histogram_class
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def clear(self):
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self.measures = {}
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def configure(self, width, size, *args):
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measure = self.histogram_class(width, size)
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self.measures[args] = measure
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return measure
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def get(self, *args):
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return self.measures.get(args, None)
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def dump(self):
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logger.debug("Histograms:")
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ks = sorted(self.measures.keys(), key='/'.join) # pylint: disable=invalid-name
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for k in ks:
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logger.debug("- %-60s %s", '|'.join(k), self.measures[k])
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class CounterStorage: # pylint: disable=missing-class-docstring
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__slots__ = 'counters', 'lock'
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def __init__(self):
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self.lock = threading.Lock()
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self.clear()
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def clear(self):
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with self.lock:
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self.counters = {}
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def configure(self, *args):
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with self.lock:
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self.counters[args] = 0
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def get(self, *args):
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return self.counters[args]
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def add(self, value, *args):
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with self.lock:
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self.counters[args] += value
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def dump(self):
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with self.lock:
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ks = sorted(self.counters.keys(), key='/'.join) # pylint: disable=invalid-name
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logger.debug("Counters:")
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for k in ks:
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logger.debug("- %-60s %s", '|'.join(k), self.counters[k])
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class VoidHistogram(Histogram): # pylint: disable=missing-class-docstring
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def observe(self, value):
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pass
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class VoidCounterStorage(CounterStorage): # pylint: disable=missing-class-docstring
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def add(self, value, *args):
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pass
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