| # |
| # Licensed to the Apache Software Foundation (ASF) under one or more |
| # contributor license agreements. See the NOTICE file distributed with |
| # this work for additional information regarding copyright ownership. |
| # The ASF licenses this file to You under the Apache License, Version 2.0 |
| # (the "License"); you may not use this file except in compliance with |
| # the License. You may obtain a copy of the License at |
| # |
| # http://www.apache.org/licenses/LICENSE-2.0 |
| # |
| # Unless required by applicable law or agreed to in writing, software |
| # distributed under the License is distributed on an "AS IS" BASIS, |
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| # See the License for the specific language governing permissions and |
| # limitations under the License. |
| # |
| |
| import threading |
| import timeit |
| from enum import Enum |
| from skywalking.meter.meter import BaseMeter, MeterType |
| from skywalking.protocol.language_agent.Meter_pb2 import MeterData, MeterSingleValue |
| |
| |
| class CounterMode(Enum): |
| INCREMENT = 1 |
| RATE = 2 |
| |
| |
| class Counter(BaseMeter): |
| def __init__(self, name: str, mode: CounterMode, tags=None): |
| super().__init__(name, tags) |
| self.count = 0 |
| self.previous = 0 |
| self.mode = mode |
| self._lock = threading.Lock() |
| |
| def increment(self, value): |
| with self._lock: |
| self.count += value |
| |
| def get(self): |
| return self.count |
| |
| def transform(self): |
| current_value = self.get() |
| if self.mode == CounterMode.RATE: |
| count = current_value - self.previous |
| self.previous = current_value |
| else: |
| count = current_value |
| |
| meterdata = MeterData(singleValue=MeterSingleValue(name=self.get_name(), labels=self.transform_tags(), value=count)) |
| return meterdata |
| |
| def get_type(self): |
| return MeterType.COUNTER |
| |
| def create_timer(self): |
| return Counter.Timer(self) |
| |
| class Timer(): |
| def __init__(self, metrics): |
| self.metrics = metrics |
| |
| def __enter__(self): |
| self.start = timeit.default_timer() |
| |
| def __exit__(self, exc_type, exc_value, exc_tb): |
| self.stop = timeit.default_timer() |
| duration = self.stop - self.start |
| self.metrics.increment(duration) |
| |
| @staticmethod |
| def timer(name: str): |
| def inner(func): |
| def wrapper(*args, **kwargs): |
| start = timeit.default_timer() |
| func(*args, **kwargs) |
| stop = timeit.default_timer() |
| duration = stop - start |
| counter = Counter.meter_service.get_meter(name) |
| counter.increment(duration) |
| |
| return wrapper |
| |
| return inner |
| |
| @staticmethod |
| def increase(name: str, num=1): |
| def inner(func): |
| def wrapper(*args, **kwargs): |
| func(*args, **kwargs) |
| counter = Counter.meter_service.get_meter(name) |
| counter.increment(num) |
| |
| return wrapper |
| |
| return inner |
| |
| class Builder(BaseMeter.Builder): |
| def __init__(self, name: str, mode: CounterMode, tags=None): |
| self.meter = Counter(name, mode, tags) |
| |
| def mode(self, mode: CounterMode): |
| self.meter.mode = mode |
| return self |