# Advanced Python Logging (APV)
> Flexible & powerful logging solution for Python applications

![](./.screens/preview.png)

## Table of Contents
- [Introduction](#introduction)
- [Requirements](#requirements)
- [Installation](#installation)
- [Features](#features)
- [Configuration Options](#configuration-options)
- [Usage](#usage)
    - [Basic Console Logging](#basic-console-logging)
    - [Console Logging with Details](#console-logging-with-details)
    - [File Logging with Rotation](#file-logging-with-rotation)
    - [File Logging with Compression and JSON Format](#file-logging-with-compression-and-json-format)
    - [Graylog Integration](#graylog-integration)
    - [AWS CloudWatch Integration](#aws-cloudwatch-integration)
    - [Mixing it all together](#mixing-it-all-together)

## Introduction
APV emerged from a simple observation: despite the abundance of logging solutions, there's a glaring lack of standardization in application logging. As a developer deeply entrenched in Elasticsearch, AWS, and Graylog ecosystems, I found myself repeatedly grappling with inconsistent log formats and cumbersome integrations. APV is my response to this challenge – a logging library that doesn't aim to revolutionize the field, but rather to streamline it.

## Requirements
- Python 3.10+

## Installation

### From PyPI
```bash
# Basic installation
pip install apv

# With CloudWatch support
pip install apv[cloudwatch]

# With ECS logging support
pip install apv[ecs]

# With all optional dependencies
pip install "apv[cloudwatch,ecs]"
```

### From Source
```bash
git clone https://github.com/acidvegas/apv
cd apv
pip install .
```

## Features
- **Console Logging with Colors**: Enhanced readability with colored log messages in the console.
- **File Logging**: Write logs to files with support for log rotation based on size and number of backups.
- **Log Compression**: Automatically compress old log files using gzip to save disk space.
- **JSON Logging**: Output logs in JSON format for better structure and integration with log management systems.
- **ECS Logging**: Output logs in ECS format for better integration with [Elasticsearch](https://www.elastic.co/elasticsearch/)
- **Detailed Log Messages**: Option to include module name, function name, and line number in log messages.
- **Graylog Integration**: Send logs to a [Graylog](https://www.graylog.org/) server using GELF over UDP.
- **AWS CloudWatch Integration**: Send logs to [AWS CloudWatch Logs](https://docs.aws.amazon.com/AmazonCloudWatch/latest/logs/WhatIsCloudWatchLogs.html).
- **Customizable Logging Levels**: Set the logging level to control verbosity.

## Configuration Options

The `setup_logging` function accepts the following keyword arguments to customize logging behavior:

| Name                     | Default                  | Description                                                                          |
|--------------------------|--------------------------|--------------------------------------------------------------------------------------|
| `level`                  | `INFO`                   | The logging level. *(`DEBUG`, `INFO`, `WARNING`, `ERROR`, `CRITICAL`)*               |
| `date_format`            | `'%Y-%m-%d %H:%M:%S'`    | The date format for log messages.                                                    |
| `log_to_disk`            | `False`                  | Whether to log to disk.                                                              |
| `max_log_size`           | `10*1024*1024` *(10 MB)* | The maximum size of log files before rotation *(in bytes)*.                          |
| `max_backups`            | `7`                      | The maximum number of backup log files to keep.                                      |
| `log_file_name`          | `'app'`                  | The base name of the log file.                                                       |
| `json_log`               | `False`                  | Whether to log in JSON format.                                                       |
| `ecs_log`                | `False`                  | Whether to log in ECS format.                                                        |
| `show_details`           | `False`                  | Whether to include module name, function name, & line number in log messages.        |
| `compress_backups`       | `False`                  | Whether to compress old log files using gzip.                                        |
| `enable_graylog`         | `False`                  | Whether to enable logging to a Graylog server.                                       |
| `graylog_host`           | `None`                   | The Graylog server host. *(Required if `enable_graylog` is `True`)*                  |
| `graylog_port`           | `None`                   | The Graylog server port. *(Required if `enable_graylog` is `True`)*                  |
| `enable_cloudwatch`      | `False`                  | Whether to enable logging to AWS CloudWatch Logs.                                    |
| `cloudwatch_group_name`  | `None`                   | The name of the CloudWatch log group. *(Required if `enable_cloudwatch` is `True`)*  |
| `cloudwatch_stream_name` | `None`                   | The name of the CloudWatch log stream. *(Required if `enable_cloudwatch` is `True`)* |

## Usage

### Basic Console Logging

```python
import logging
import apv

# Set up basic console logging
apv.setup_logging(level='INFO')

logging.info('This is an info message.')
logging.error('This is an error message.')
```

### Console Logging with Details

```python
import logging
import apv

# Set up console logging with detailed information
apv.setup_logging(level='DEBUG', show_details=True)

logging.debug('Debug message with details.')
```

### File Logging with Rotation

```python
import logging
import apv

# Set up file logging with log rotation
apv.setup_logging(
    level='INFO',
    log_to_disk=True,
    max_log_size=10*1024*1024,  # 10 MB
    max_backups=5,
    log_file_name='application_log'
)

logging.info('This message will be logged to a file.')
```

### File Logging with Compression and JSON Format

```python
import logging
import apv

# Set up file logging with compression and JSON format
apv.setup_logging(
    level='DEBUG',
    log_to_disk=True,
    max_log_size=5*1024*1024,  # 5 MB
    max_backups=7,
    log_file_name='json_log',
    json_log=True,
    compress_backups=True
)

logging.debug('This is a debug message in JSON format.')
```

### Graylog Integration

```python
import logging
import apv

# Set up logging to Graylog server
apv.setup_logging(
    level='INFO',
    enable_graylog=True,
    graylog_host='graylog.example.com',
    graylog_port=12201
)

logging.info('This message will be sent to Graylog.')
```

### AWS CloudWatch Integration

```python
import logging
import apv

# Set up logging to AWS CloudWatch Logs
apv.setup_logging(
    level='INFO',
    enable_cloudwatch=True,
    cloudwatch_group_name='my_log_group',
    cloudwatch_stream_name='my_log_stream'
)

logging.info('This message will be sent to AWS CloudWatch.')
```

### ECS Logging

```python
import logging
import apv

# Set up ECS logging
apv.setup_logging(
    level='INFO',
    ecs_log=True
)
``` 

### Mixing it all together

```python
import logging
import apv

# Set up logging to all handlers
apv.setup_logging(
    level='DEBUG',
    log_to_disk=True,
    max_log_size=10*1024*1024,
    max_backups=7,
    log_file_name='app',
    json_log=True,
    compress_backups=True,
    enable_graylog=True,
    graylog_host='graylog.example.com',
    graylog_port=12201,
    enable_cloudwatch=True,
    cloudwatch_group_name='my_log_group',
    cloudwatch_stream_name='my_log_stream',
    show_details=True
)
```

---

###### Mirrors: [acid.vegas](https://git.acid.vegas/apv) • [SuperNETs](https://git.supernets.org/acidvegas/apv) • [GitHub](https://github.com/acidvegas/apv) • [GitLab](https://gitlab.com/acidvegas/apv) • [Codeberg](https://codeberg.org/acidvegas/apv)