Our servers receive health reports from different types of devices. Our backend generates a report based on pre-defined formula of device and status.
Your assignment consists of the following:
- Attached an example of a report that was generated based on the devices health reports - see
report.csv. - You need to process the incoming CSV data, let's assume this will run in a periodic manner (how?)
- The CSV is formatted with the following columns:
- timestamp, id, type, status
- You can do with the data whatever you like (store in-memory, database, files, etc.)
- The data will be used only for the status report (Part #2).
- Write a script/tool that will pre-process the data from this CSV and prepare it for Part #2.
- You can write this script in any language you want, preferably Python or Ruby.
- Keep this script as simple as possible, it has one task and should do only this one task!
- Users selects a day
- Display the 10 most "popular" devices, Popularity of a device is defined as the number of distinct occurrences in the same day
- For each device in the report, show the percentage change of occurrences in the same day a week before.
- User selects a device type from the list of available types and status.
- Display a table of day and total devices for each day (for the last 30 days).
- The web-app is read-only (the user cannot add/modify the data).
- The trends reporting must be implemented as a web-application.
- No need to implement authentication / login for the web application.
- Design (colors etc.) is not really important for this assignment, don't waste your time on CSS tweaks.
timestamp,id,type,status
2009-12-01T06:59:22Z,1q2w3e4r,sensor,online
2009-12-01T06:59:22Z,1q2w3e4r,gateway,offline