Python logging library for augmenting log records with additional information
Project description
logaugment
==========
Python logging library for augmenting log records with additional information.
This library supports Python 2.7.x and Python 3.x.
If you want custom keys in your logged string:
.. code:: python
formatter = logging.Formatter("%(message)s: %(custom_key)s")
then this library allows you to add them easily:
.. code:: python
logaugment.add(logger, custom_key='custom_value')
logger.warn("My message")
# My message: custom_value
Note that this call provides a default value for that key. This means you can
safely make logging calls without getting exceptions that the key is missing.
See below if you wish to override the value for a particular logging call.
You should not repeatedly call logaugment.add just to change the value - it's
intended as set-once-and-forget functionality.
You can install the library with pip:
.. code:: bash
$ pip install logaugment
Why?
====
If you need to add custom keys to your Python logging strings you need to pass
them in with each logging call. That is inconvenient so this library allows you
to add values just once and they're then available for all logging calls
afterwards.
Here is a full example:
.. code:: python
import logging
import logaugment
logger = logging.getLogger()
handler = logging.StreamHandler()
formatter = logging.Formatter("%(message)s: %(custom_key)s")
handler.setFormatter(formatter)
logger.addHandler(handler)
logaugment.add(logger, custom_key='custom_value')
logger.warn("My message")
# My message: custom_value
Examples
========
You can use keywords to specify additional values:
.. code:: python
logaugment.add(logger, custom_key='custom_value')
logger.warn("My message")
# My message: custom_value
You can also use a dictionary to specify the keys / values:
.. code:: python
logaugment.add(logger, {'custom_key': 'custom_value'})
logger.warn("My message")
# My message: custom_value
You can also use a function which returns a dictionary:
.. code:: python
def process_record(record):
return {'custom_key': record.levelname}
logaugment.add(logger, process_record)
logger.warn("My message")
# My message: WARNING
You can pass an `extra` dictionary in the call which overrides the
augmented data:
.. code:: python
logaugment.add(logger, {'custom_key': 'custom_value'})
logger.warn("My message", extra={'custom_key': 'extra_value'})
# My message: extra_value
You can use `logaugment.reset` to remove all additional values that
were added using the `logaugment` library:
.. code:: python
logaugment.reset(logger)
==========
Python logging library for augmenting log records with additional information.
This library supports Python 2.7.x and Python 3.x.
If you want custom keys in your logged string:
.. code:: python
formatter = logging.Formatter("%(message)s: %(custom_key)s")
then this library allows you to add them easily:
.. code:: python
logaugment.add(logger, custom_key='custom_value')
logger.warn("My message")
# My message: custom_value
Note that this call provides a default value for that key. This means you can
safely make logging calls without getting exceptions that the key is missing.
See below if you wish to override the value for a particular logging call.
You should not repeatedly call logaugment.add just to change the value - it's
intended as set-once-and-forget functionality.
You can install the library with pip:
.. code:: bash
$ pip install logaugment
Why?
====
If you need to add custom keys to your Python logging strings you need to pass
them in with each logging call. That is inconvenient so this library allows you
to add values just once and they're then available for all logging calls
afterwards.
Here is a full example:
.. code:: python
import logging
import logaugment
logger = logging.getLogger()
handler = logging.StreamHandler()
formatter = logging.Formatter("%(message)s: %(custom_key)s")
handler.setFormatter(formatter)
logger.addHandler(handler)
logaugment.add(logger, custom_key='custom_value')
logger.warn("My message")
# My message: custom_value
Examples
========
You can use keywords to specify additional values:
.. code:: python
logaugment.add(logger, custom_key='custom_value')
logger.warn("My message")
# My message: custom_value
You can also use a dictionary to specify the keys / values:
.. code:: python
logaugment.add(logger, {'custom_key': 'custom_value'})
logger.warn("My message")
# My message: custom_value
You can also use a function which returns a dictionary:
.. code:: python
def process_record(record):
return {'custom_key': record.levelname}
logaugment.add(logger, process_record)
logger.warn("My message")
# My message: WARNING
You can pass an `extra` dictionary in the call which overrides the
augmented data:
.. code:: python
logaugment.add(logger, {'custom_key': 'custom_value'})
logger.warn("My message", extra={'custom_key': 'extra_value'})
# My message: extra_value
You can use `logaugment.reset` to remove all additional values that
were added using the `logaugment` library:
.. code:: python
logaugment.reset(logger)
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