Skip to main content
Python Software Foundation 20th Year Anniversary Fundraiser  Donate today!

A log handler for the Python logging module, emitting all logs to specific Redis channels

Project description


Handler for the standard logging module which puts logs through to Redis.

How to use

You can either publish your logs to a channel, rpush them onto a key with an optional ttl or implement the desired behaviour by deriving from the base class.

To add a handler to the python logger is very simple:

import logging

from redis_log_handler import RedisKeyHandler

example_handler = RedisKeyHandler('example_key')  # Default parameters for Redis connection are used

logger = logging.getLogger()  # No name gives you the root logger

logger.warning("This will rpush this message to the 'example_key' in Redis.")

Configuring Redis Connection

By default each handler will create a StrictRedis instance, passing on each argument from their __init(**kwargs) to the StrictRedis instantiation. This means you can configure the connection as specific as you'd like, but every argument needs to have its keyword ((host=localhost) instead of (localhost). All available configuration options are available in te python-redis documentation.

handler = RedisKeyHandler("key", host="localhost", port=6379, password=None)

connection_pool = redis.ConnectionPool(host="localhost")
handler = RedisKeyHandler("key", connection_pool=connection_pool)

1. RedisChannelHandler

This opens a connection to a redis channel, allowing subscribers to pickup new messages in realtime. Every message triggered by the logging instance, will get published to the specified channel.

handler = RedisChannelHandler("channelname")

2. RedisKeyHandler

This creates/pushes onto the provided key, whatever message the logging instance will emit. By default every message will be sent via rpush, so that when the list is retrieved using lrange $key 0 -1, all messages are returned in the order they were sent. Optionally a ttl (time to live) can be provided which will be a counter that will be set each time a message is sent, essentially refreshing the duration of the time to live for this key.

handler = RedisKeyHandler("some_key_name", ttl=60)

3. Custom Redis Handler

We also provide the ability to write custom emit functions, which get picked up by the logging instance, by inheriting the Base class. If none of the provided Redis implementations rock you boat, simply inherit the Base class and overwrite the emit() method.

In the following example we will write an example of a CustomRedisHandler which overwrites the value of the key it already exists.

class CustomRedisHandler(RedisBaseHandler):
    def __init__(self, key: str, **kwargs: Any):
        self.key = key

    def emit(self, message: logging.LogRecord):
        self.redis_client.set(self.key, str(message))

Project details

Download files

Download the file for your platform. If you're not sure which to choose, learn more about installing packages.

Files for redis-log-handler, version 0.0.1.dev30
Filename, size File type Python version Upload date Hashes
Filename, size redis_log_handler-0.0.1.dev30-py2.py3-none-any.whl (4.6 kB) File type Wheel Python version py2.py3 Upload date Hashes View
Filename, size redis-log-handler-0.0.1.dev30.tar.gz (7.2 kB) File type Source Python version None Upload date Hashes View

Supported by

AWS AWS Cloud computing Datadog Datadog Monitoring DigiCert DigiCert EV certificate Facebook / Instagram Facebook / Instagram PSF Sponsor Fastly Fastly CDN Google Google Object Storage and Download Analytics Microsoft Microsoft PSF Sponsor Pingdom Pingdom Monitoring Salesforce Salesforce PSF Sponsor Sentry Sentry Error logging StatusPage StatusPage Status page