System Performance Monitoring Application

This is a Cross Platform Console Application which Logs system Statistics to provided plugin. Plugins can be inserted dynamically to the application.

Architectural And Design Decisions

1. Plugin-Architecture

   • Plugin Architecture makes the application more modular providing self-contained components (Plugins) for specific behaviours making system testable,maintainable.
   • Application follows Open-Close Principle when used plugin architecture where applications usage is open to extension but closed to modification.

   

2. SOLID principle:

   • Solid principles should always be implemented whenever a code is written it makes core more readable and maintainable.

3. Strategy Pattern:

   • This application needs some platform specific code so that it can work on multiple platforms.
   • Using strategy pattern with interface to abstract the platform specific logic.

4. Producer Consumer Design

   • When getting stats for each interval there can be some delay while logging tha data through different mechanisms which can delay reading for next iteration.
   • Producer (in case our host app) produces data at each interval and Consumer (plugins in our case) can consume them at any rate.

5. Clean(Onion) Architecture:

   • I have used Layered Onion architecture so that services are accessed using Exposed Apis only.
   • If the Core is changed it will impact all the plugins and Host.

Limitations Of Current Code:

1. BackPressure Issue :
   • I am using UnBounded Channels to produce the data. if this data is not consumed at a rate better than production then there can be BackPressure.
2. Manually needs to copy plugins dll to the plugins path it can be automated.

How to Run:

1. Extract the Downloaded Setup.
2. Open the folder in terminal and run following command: .\SystemMonitor.Host logtofile 2000

• .\SystemMonitor.Host is our application name
• logtofile is plugin command for logging to file, and
• 2000 represents interval in milliseconds in which to get the data (2sec)

This command will create a log.txt file in Output/ directory.

3. To run for remote logger plugin:
   • First make sure you update appsettings.json with proper baseUrl and path.
   • now run command: .\SystemMonitor.Host logtofile 2000
   • you should see logs which states the requests send in the terminal.