http-logs
Simple program that reads a log file (w3c-formatted HTTP access log) and displays statistics.
How to use ?
Prerequisites
You will need to have Node.js installed.
- clone this repo to the folder of your choice
- go to the folder where you cloned the repo and execute
npm install - open a terminal and run the command below
Run program
node watch-logs --path=/path/to/log/file.log --time=10000 --limit=5
Optional arguments
path: relative or absolute path to file (default to /tmp/access.log).
time: time in milliseconds to wait between two reads of the file (default to 10000 milliseconds).
limit: limit of sections of the website to display (default to 5).
Possible improvements
- show most visited webpages (not only section)
- show most recurrent IPs
- detect DDoS attack ?
- create notifications based on events (e.g. send an email or SMS if error rates go beyond 10%)
- save data to database to keep history
- display charts over time
- use ESLint on project
- implement tests
Difficulties
- I didn't know how to keep reading a file as it's modified in Node.js
- I had to create a fake realtime log file to test my code
- I had to find the correct regex to be able to read and split data for each access log line