@Marvin how do i use loguru to send logs to prefect platform in version 3

To use Loguru to send logs to the Prefect platform in version 3, you'll need to integrate Loguru with Prefect's logging system. Here's a concise guide: 1. Prefect's Logging System: Prefect provides a logging system that automatically captures logs during flow and task runs. You can access these logs via the UI, CLI, or API. Prefect logs include state changes, errors, and custom log messages. 2. Custom Loggers: Prefect allows you to use custom loggers by importing

get_run_logger

from

prefect.logging

. This logger is aware of the current flow or task run context, enabling detailed contextual logging. 3. Loguru Integration: To integrate Loguru with Prefect: - Use Loguru's logging capabilities to emit logs. - Redirect Loguru logs to Prefect's logger by configuring a handler that sends logs to the logger obtained from

get_run_logger

. 4. Environment Settings: Ensure that Prefect captures logs from Loguru by setting the

PREFECT_LOGGING_EXTRA_LOGGERS

environment variable, if necessary. 5. Example Configuration:

python
   from loguru import logger
   from prefect import flow
   from prefect.logging import get_run_logger

   @flow
   def my_flow():
       run_logger = get_run_logger()
       logger.add(lambda msg: <http://run_logger.info|run_logger.info>(msg))
       <http://logger.info|logger.info>("This is a Loguru log message sent to Prefect.")

   my_flow()

6. Further Reading: For more detailed information on logging in Prefect, refer to the Prefect Logging Documentation. By following these steps, you can effectively send Loguru logs to the Prefect platform.

@Marvin give me examples

To integrate Loguru with Prefect's logging system in version 3, here's a step-by-step example: 1. Basic Setup: First, ensure you have Prefect and Loguru installed in your environment. 2. Flow with Loguru Logging: - Use Loguru to log messages and redirect these to Prefect's logger.

python
from loguru import logger
from prefect import flow
from prefect.logging import get_run_logger

@flow
def my_flow():
    # Obtain Prefect's run logger
    run_logger = get_run_logger()

    # Add a Loguru handler that redirects logs to Prefect's logger
    logger.add(lambda msg: <http://run_logger.info|run_logger.info>(msg))

    # Log a message using Loguru
    <http://logger.info|logger.info>("This is a Loguru log message sent to Prefect.")

# Execute the flow
my_flow()

### Explanation: - Loguru Setup: Loguru is configured to send its log messages to Prefect's logger using a lambda function. This allows Prefect to capture Loguru logs. - Prefect's Logger: The

get_run_logger()

function is used to obtain a logger that is aware of the current flow run context. - Logging: When

<http://logger.info|logger.info>()

is called, the message is redirected to Prefect's logging system, making it visible in Prefect's UI and other interfaces. ### Additional Configuration: - Environment Variable: If you need to ensure Prefect captures logs from Loguru, you might set the

PREFECT_LOGGING_EXTRA_LOGGERS

environment variable, though in this setup, it directly uses Prefect's logger. This example should help you integrate Loguru with Prefect's logging system effectively. For more details, you can explore the Prefect Logging Documentation.