This script checks the uptime of a set of HTTP endpoints defined in a YAML config file. It checks the availability of endpoints every 15 seconds and logs the results by domain.

1. Clone the repository:

   git clone https://github.com/Pilas01/sre-take-home-exercise-python.git
   cd sre-take-home-exercise-python
   

2. Create and activate a virtual environment (optional but recommended):

   python -m venv venv
   source venv/Scripts/activate  # Use `venv/bin/activate` on Mac/Linux

3. Install dependencies:

   pip install -r requirements.txt

4. Create a config.yaml file with your endpoints:

   - name: Google
     url: https://www.google.com
   - name: Example
     url: https://example.com

5. Run the script:

   python healthcheck.py config.yaml

• Issue 1: The script didn’t read from a YAML file.

  • Fix: I added support for reading a config.yaml file using argparse and PyYAML.

• Issue 2: No way to customize the HTTP request (e.g., method, headers).

  • Fix: Now, the script supports optional method, headers, and body fields in the YAML file.

• Issue 3: No validation for status code and response time.

  • Fix: The script now checks if the status code is between 200-299 and the response time is under 500ms.

• Issue 4: The script didn’t group results by domain.

  • Fix: I used urlparse() to extract domains from the URLs and grouped results accordingly.

• Issue 5: Availability percentage included decimals.

  • Fix: Per Fetch Rewards’ requirement, I made the script drop the decimal part by casting the percentage to int().

When running the script, it will log availability percentages every 15 seconds like this:

2025-04-22 17:50:19,378 - www.google.com: 100% availability 2025-04-22 17:50:19,379 - example.com: 100% availability