Total Quality

Description / Features

Total Quality plugin combines four domains measures (architecture, design, code, and tests) in order to calculate a global and unified project quality health.

Metrics

Architecture

Architecture measure is composed of two metric, PTI based on cyclic dependencies, and ADI obtained from the distance.

• PTI, package tangle index core metric.
• ADI TODO.

Default architecture formula coefficients

Architecture = 100 * PTI + 0 * ADI

Design

Design is more complete than Architecture, combines five metrics, NOM, LCOM4, RFC, CBO, and DIT.

• NOM, decorates functions and classes complexities (50% each one). Reads global weight (aceleration value) and default limits (function 2.5 and class 12). Code sample,
  AbstractDesignDecorator.java
• LCOM4, based on lcom4 with global acel and 1.0 as default limit.
• RFC, based on rfc core metric with global acel and 50.0 as default limit.
• CBO, based on cbo core metric with global acel and 5.0 as default limit.
• DIT, based on dit core metric with global acel and 5.0 as default limit.

Default design formula coefficients

Design = 0.15*NOM + 0.15*LCOM + 0.25*RFC 0.25*CBO + 0.20*DIT

Code

Code quality combines rule violations, public api documentation, and dryness (duplicate code inverse).

Code = 0.15*DOC + 0.45*RULES + 0.40*DRYNESS

Test

Testing quality is based on coverage metric family (coverage, and test success).

Test = 0.80*COV + 0.20*SUC

Total Quality

Total quality default threshold,

TQ = 0.25*CODE + 0.25*ARCH + 0.25*DESIGN + 0.25*TEST

Configuration

Every limit and every formula should be configure with administration view.
If you want to remove a metric just do,

"ARCH=0.25 DESIGN=0.25 CODE=0.50 TESTS=0.00"

Known limitations and TODO

• No dashboard widget so you have to check metrics with components list, projects list, radiators, etc.

Usage & Installation

1. Copy the jar into /extensions/plugins/ directory
2. Restart Sonar Web server
3. Launch a new quality analysis and the metrics will be fed