68 lines
2.6 KiB
Markdown
68 lines
2.6 KiB
Markdown
---
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layout: page
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title: logmiddleware
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description: Simplify the logging of incoming requests and outgoing responses.
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github: https://git.slc.ar/slococo/logmiddleware
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importance: 7
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category: personal
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---
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Python library designed for use with FastAPI to simplify the logging of incoming requests and outgoing responses. It includes a middleware component that adds essential information to logs, such as request and response details, and supports debugging features.
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## Features
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- **Middleware for request and response logging:** The library provides a middleware component, `RouterLoggingMiddleware`, to log incoming requests and outgoing responses. It includes features to capture request details, response information, and execution times.
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- **Request ID generation:** Automatically generates a unique request ID for each incoming request. If the request includes an `x-api-request-id` header, it uses that value; otherwise, it generates a new UUID.
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- **Debugging support:** Enables debugging of response bodies through the use of the `api_debug` flag. When enabled, the response body is included in the logs.
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- **JSON logging configuration:** Utilizes the `python-json-logger` library to configure JSON logging. This allows for structured and easily parsable log entries.
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## Installation
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To install the library, use the following pip command:
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```bash
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pip install logmiddleware
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```
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## Usage
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### Setting up middleware
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```python
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import logging
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from fastapi import FastAPI
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from logmiddleware import RouterLoggingMiddleware, logging_config
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# Configure JSON logging
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logging.config.dictConfig(logging_config)
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app = FastAPI()
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# Add the middleware to your FastAPI app
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app.add_middleware(
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RouterLoggingMiddleware,
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logger=logging.getLogger(__name__), # Pass your logger instance
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api_debug=True, # Set to True to enable debugging of response bodies
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)
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```
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### Accessing request ID in the called function
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The `execute_request` method has been updated to set the `request_id` in the `request.state`. You can now access it in the called function using `request.state.request_id`. Here is an example:
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```python
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# ...
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@app.get("/example")
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async def example_route(request: Request):
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# Accessing the request_id in the called function
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request_id = request.state.request_id
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return {"message": "Hello, world!", "request_id": request_id}
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```
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## Configuration
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The library relies on a logging configuration dictionary (`logging_config`) to set up JSON logging. Because of that, it includes a default logging configuration (`logging_config`), which you can import for easy setup. Ensure this configuration is properly set before adding the middleware to your FastAPI app.
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