DI POC

[illuque-iov]

POC implementing a simple Dependency Injection system for RSKj.

Description

POC implementing a simple Dependency Injection system for RSKj. This system is not invasive, meaning that it can be applied for the dependencies we consider relevant while leaving others aside (no changes). For showcasing purposes, co.rsk.net.handler.quota.TxQuotaChecker is being injected in co.rsk.core.bc.TransactionPoolImpl#TransactionPoolImpl using this new mechanism.

The feature is yet a draft, subject to changes or bugs. It needs thorougher testing before considering it production ready, although it seems not very invasive or potentially problematic.

Motivation and Context

Injecting dependencies via constructor is sometimes tedious and affects multiple nested classes. This PR aims to simplify this.

How Has This Been Tested?

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• Tests for the changes have been added (for bug fixes / features)
• Requires Activation Code (Hard Fork)

• Other information:

[sonarcloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
1 Code Smell

71.7% Coverage
0.0% Duplication

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