Url shortener challenge

[waynehamadi]

Background

Changes

PR Quality Checklist

• [X] I have run the following commands against my code to ensure it passes our linters:

  black . --exclude test.py
  isort .
  mypy .
  autoflake --remove-all-unused-imports --recursive --ignore-init-module-imports --ignore-pass-after-docstring --in-place agbenchmark

[github-actions[bot]]

PR Analysis

• 🎯 Main theme: Implementing a URL shortener

• 📝 PR summary: The PR introduces a URL shortener implemented in Python. The shortener uses base64 encoding to shorten the URLs and stores the mapping between the shortened and original URLs in a dictionary. The PR also includes a test suite to validate the functionality of the URL shortener.

• 📌 Type of PR: Enhancement

• 🧪 Relevant tests added: Yes

• 🔒 Security concerns: No security concerns found

  PR Feedback

• 💡 General suggestions: The PR is well-structured and includes relevant tests. However, the URL shortener implementation could be improved to handle potential collisions in the shortened URLs. Also, the URL shortener should handle the case where a non-existent shortened URL is retrieved.

• 🤖 Code feedback:

  • relevant file: agbenchmark/challenges/verticals/code/3_url_shortener/artifacts_out/url_shortener.py suggestion: Consider adding a collision handling mechanism in the 'shorten_url' function. Currently, the first 8 characters of the base64 encoded URL are used as the shortened URL. This could potentially lead to collisions where two different URLs are shortened to the same value. A simple solution could be to check if the shortened URL already exists in the 'URL_MAPPING' dictionary, and if it does, generate a new shortened URL. [important] relevant line: '+ short_url = encoded_url[:8]'

  • relevant file: agbenchmark/challenges/verticals/code/3_url_shortener/artifacts_out/url_shortener.py suggestion: In the 'retrieve_url' function, instead of returning a hard-coded "URL not found" string when a non-existent shortened URL is retrieved, consider raising an exception. This would allow the caller to handle the error in a way that is appropriate for their use case. [medium] relevant line: '+ return URL_MAPPING.get(short_url, "URL not found")'

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