Log Collection

Description

Problem

A customer has asked you for a way to provide on-demand monitoring of various unix-based servers without having to log into each individual machine and opening up the log files found in /var/log. The customer has asked for the ability to issue a REST request to a machine in order to retrieve logs from /var/log on the machine receiving the REST request.

Requirements

• Customer interface is a HTTP REST request
• Customer must be able to query the following:
  • for a specific file in /var/log
  • last n events of specified file
  • basic text/keyword filtering of events
• The results returned must be reverse time ordered
• Must not use any pre-built log aggregation systems - this must be custom, purpose-built software.
• Minimize the number of external dependencies in the business logic code path (framework things like HTTP servers, etc are okay)
• Please commit and push code changes as you normally would - your thinking and working style is an important part for us to understand.

Bonus: The customer has a stretch goal for the ability to issue a REST request to one "master" server in order to retrieve logs from a list of machines provided in the request. For this, there's no requirements for the protocol between the master server and other servers.

Bonus: Basic UI for demo purposes.

Installation

1. Install NodejS
2. Run npm i
3. Copy .env.example to .env

Run

1. Run npm run build to compile the typescript
2. Run npm start to start the server

Tests

1. Copy test/resources/small.log & test/resources/medium.log to /var/log
2. Run npm test to run all tests