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autometrics-0.4
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Easily add metrics to your system – and actually understand them using automatically customized Prometheus queries
| ویژگی | مقدار |
|---|---|
| سیستم عامل | - |
| نام فایل | autometrics-0.4 |
| نام | autometrics |
| نسخه کتابخانه | 0.4 |
| نگهدارنده | [] |
| ایمیل نگهدارنده | [] |
| نویسنده | Fiberplane |
| ایمیل نویسنده | info@fiberplane.com |
| آدرس صفحه اصلی | https://github.com/autometrics-dev/autometrics-py |
| آدرس اینترنتی | https://pypi.org/project/autometrics/ |
| مجوز | MIT OR Apache-2.0 |
# autometrics-py
A Python library that exports a decorator that makes it easy to understand the error rate, response time, and production usage of any function in your code. Jump straight from your IDE to live Prometheus charts for each HTTP/RPC handler, database method, or other piece of application logic.
Autometrics for Python provides:
1. A decorator that can create [Prometheus](https://prometheus.io/) metrics for your functions and class methods throughout your code base.
2. A helper function that will write corresponding Prometheus queries for you in a Markdown file.
See [Why Autometrics?](https://github.com/autometrics-dev#why-autometrics) for more details on the ideas behind autometrics.
## Features
- ✨ `autometrics` decorator instruments any function or class method to track the
most useful metrics
- 💡 Writes Prometheus queries so you can understand the data generated without
knowing PromQL
- 🔗 Create links to live Prometheus charts directly into each functions docstrings (with tooltips coming soon!)
- 📊 (Coming Soon!) Grafana dashboard showing the performance of all
instrumented functions
- 🚨 Enable Prometheus alerts using SLO best practices from simple annotations in your code
- ⚡ Minimal runtime overhead
## Using autometrics-py
- Set up a [Prometheus instance](https://prometheus.io/download/)
- Configure prometheus to scrape your application ([check our instructions if you need help](https://github.com/autometrics-dev#5-configuring-prometheus))
- Include a .env file with your prometheus endpoint `PROMETHEUS_URL=your endpoint`. If this is not defined, the default endpoint will be `http://localhost:9090/`
- `pip install autometrics`
- Import the library in your code and use the decorator for any function:
```py
from autometrics import autometrics
@autometrics
def sayHello:
return "hello"
```
- To access the PromQL queries for your decorated functions, run `help(yourfunction)` or `print(yourfunction.__doc__)`.
- To show tooltips over decorated functions in VSCode, with links to Prometheus queries, try installing [the VSCode extension](https://marketplace.visualstudio.com/items?itemName=Fiberplane.autometrics).
> Note that we cannot support tooltips without a VSCode extension due to behavior of the [static analyzer](https://github.com/davidhalter/jedi/issues/1921) used in VSCode.
## Alerts / SLOs
Autometrics makes it easy to add Prometheus alerts using Service-Level Objectives (SLOs) to a function or group of functions.
In order to receive alerts you need to add a set of rules to your Prometheus set up. You can find out more about those rules here: [Prometheus alerting rules](https://github.com/autometrics-dev/autometrics-shared#prometheus-recording--alerting-rules). Once added, most of the recording rules are dormant. They are enabled by specific metric labels that can be automatically attached by autometrics.
To use autometrics SLOs and alerts, create one or multiple `Objective`s based on the function(s) success rate and/or latency, as shown below. The `Objective` can be passed as an argument to the `autometrics` macro to include the given function in that objective.
```python
from autometrics import autometrics
from autometrics.objectives import Objective, ObjectiveLatency, ObjectivePercentile
API_SLO = Objective(
"random",
success_rate=ObjectivePercentile.P99_9,
latency=(ObjectiveLatency.Ms250, ObjectivePercentile.P99),
)
@autometrics(objective=API_SLO)
def api_handler():
# ...
```
Autometrics by default will try to store information on which function calls a decorated function. As such you may want to place the autometrics in the top/first decorator, as otherwise you may get `inner` or `wrapper` as the caller function.
So instead of writing:
```py
from functools import wraps
from typing import Any, TypeVar, Callable
R = TypeVar("R")
def noop(func: Callable[..., R]) -> Callable[..., R]:
"""A noop decorator that does nothing."""
@wraps(func)
def inner(*args: Any, **kwargs: Any) -> Any:
return func(*args, **kwargs)
return inner
@noop
@autometrics
def api_handler():
# ...
```
You may want to switch the order of the decorator
```py
@autometrics
@noop
def api_handler():
# ...
```
## Development of the package
This package uses [poetry](https://python-poetry.org) as a package manager, with all dependencies separated into three groups:
- root level dependencies, required
- `dev`, everything that is needed for development or in ci
- `examples`, dependencies of everything in `examples/` directory
By default, poetry will only install required dependencies, if you want to run examples, install using this command:
```sh
poetry install --with examples
```
Code in this repository is:
- formatted using [black](https://black.readthedocs.io/en/stable/).
- contains type definitions (which are linted by [pyright](https://microsoft.github.io/pyright/))
- tested using [pytest](https://docs.pytest.org/)
In order to run these tools locally you have to install them, you can install them using poetry:
```sh
poetry install --with dev
```
After that you can run the tools individually
```sh
# Formatting using black
poetry run black .
# Lint using pyright
poetry run pyright
# Run the tests using pytest
poetry run pytest
```
نیازمندی
| مقدار | نام |
|---|---|
| ==0.16.0 | prometheus-client |
| ==1.0.0 | python-dotenv |
| >=4.5.0,<5.0.0 | typing-extensions |
زبان مورد نیاز
| مقدار | نام |
|---|---|
| >=3.8,<4.0 | Python |
نحوه نصب
نصب پکیج whl autometrics-0.4:
pip install autometrics-0.4.whl
نصب پکیج tar.gz autometrics-0.4:
pip install autometrics-0.4.tar.gz