IF Notes

Software Measurement Tools

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Software Measurement Tools

Questions/Cues

  • Tool apa saja yang dipakai untuk mengukur metrik software?
  • Metrik apa yang didukung MetricsReloaded?
  • Apa yang ditampilkan PHPMetrics dan SonarQube?
  • Apa itu quality gate pada SonarQube?
  • Apa yang diukur JHawk dan Radon?

Reference Points

  • Software Quality and Metrics (Halaman 58-60)
  • Software Quality and Metrics (Halaman 61-71)

MetricsReloaded

Plugin IntelliJ IDE (supported language: Java). Mengukur source code metrics otomatis untuk IntelliJ IDEA dan IntelliJ Platform IDE. Metrik LOC & file-count tersedia untuk semua bahasa yang didukung IDE, dan banyak metrik lain untuk Java. Dapat dijalankan via Help | Find Action → Calculate Metrics, atau dari command line untuk integrasi ke build server (idea metrics).

Supported Metrics/Measurement: Chidamber-Kemerer, Class-count, Complexity, Dependency, LOC, Martin Packaging.

  • Sample Results (CK Metrics): kolom CBO, DIT, LCOM, NOC, RFC, WMC per class — mis. average CBO 4.69, DIT 4.06, LCOM 3.31, RFC 33.81, WMC 13.88 (total WMC 222).
  • Sample Results (Cyclomatic Complexity) per method: CogC (Cognitive Complexity), ev(G) (Essential Cyclomatic Complexity), iv(G) (Design Complexity), v(G) (Cyclomatic Complexity).

PHPMetrics

Static analyzer untuk PHP. Dashboard menampilkan: jumlah Violations, Lines of code, Classes, Average cyclomatic complexity by class, Average bugs by class, serta visualisasi Maintainability/complexity (tiap file = lingkaran; ukuran = cyclomatic complexity, warna = Maintainability Index) dan ClassRank (PageRank Google diterapkan ke relasi antar class).

  • Sample Metrics: Complexity & defect, Size & Volume (LLOC, CLOC, Volume, Intelligent content, Comment weight), Object Relation, Coupling (Afferent coupling, Efferent coupling, Instability, ClassRank).
  • Sample Static Analysis: Violations, Information, Warnings, Errors — dengan Class Violations seperti Too complex class code, Too complex method code, Probably bugged (berbasis jumlah operator, operand, cyclomatic complexity, mengacu Halstead).

SonarQube

Platform untuk continuous inspection Code Quality.

  • Mendukung 27 bahasa: Java (termasuk Android), C#, C/C++, JavaScript, TypeScript, Python, Go, Swift, COBOL, Apex, PHP, Kotlin, Ruby, Scala, HTML, CSS, ABAP, Flex, Objective-C, PL/I, PL/SQL, RPG, T-SQL, VB.NET, VB6, XML.
  • Open-source dengan versi free dan enterprise; dapat diintegrasikan dengan IDE dan CI/CD pipelines.
  • Melakukan static analysis (code smells, vulnerabilities, dll.) + software metrics (LOC, Cyclomatic Complexity, dll.).
  • Reliability Dashboard: rating reliability, jumlah bugs, remediation effort.
  • Quality Gates: kondisi pada New Code dan Overall Code. Contoh kondisi: Coverage < 80% (gagal), Duplicated Lines > 3%, Maintainability/Reliability/Security Rating worse than A, Security Hotspots Reviewed < 100%, Cognitive Complexity > 10, Cyclomatic Complexity > 15, Lines of Code > 100, Classes > 100. Status bisa Failed bila kondisi tidak terpenuhi.

JHawk

Tool metrik untuk Java (Virtual Machinery). Alur: pilih file Java (Select Files → Analyse), lihat Results berupa dashboard System Metric Gauges. Contoh: Average Cyclomatic Complexity SAFE 100%, Maximum Cyclomatic Complexity SAFE 47% / WARNING 23% / DANGER 30%, Cyclomatic Complexity SAFE 94% / WARNING 2% / DANGER 4% (19610 records all methods). Preferences memungkinkan atur warna level metrik: Normal (hijau), Warning (oranye), Danger (merah).

Radon

Tool Python yang menghitung berbagai code metrics:

  • Raw metrics: SLOC, comment lines, blank lines, dll.
  • Cyclomatic Complexity (McCabe’s Complexity).
  • Halstead metrics (semuanya).
  • Maintainability Index (metrik gaya Visual Studio).
  • Dapat dipakai dari command line atau secara programatik via API.

Sample Metrics: Size & comments (LOC, LLOC, SLOC, Comments, Single comments, Multi, Blank) dan Halstead (h1, h2, N1, N2, vocabulary, length, calculated_length, volume, difficulty, effort, time, bugs).

Ringkasan Perbandingan Tool

ToolBahasaSorotan
MetricsReloadedJava (IntelliJ)CK metrics, complexity, LOC, dependency
PHPMetricsPHPMaintainability/complexity viz, ClassRank, static analysis
SonarQube27 bahasaContinuous inspection, quality gates, CI/CD
JHawkJavaDashboard gauges Safe/Warning/Danger
RadonPythonRaw, Cyclomatic, Halstead, Maintainability Index

Summary

Berbagai tool mengotomasi pengukuran metrik: MetricsReloaded (plugin IntelliJ, CK metrics & complexity untuk Java), PHPMetrics (analyzer PHP dengan visualisasi maintainability & ClassRank), SonarQube (continuous inspection 27 bahasa dengan quality gates terintegrasi CI/CD), JHawk (dashboard gauge Safe/Warning/Danger untuk Java), dan Radon (raw, cyclomatic, Halstead, Maintainability Index untuk Python). Tools ini mewujudkan prinsip automatable & economical dari Software Measurement Fundamentals dan menghitung metrik dari Size and Complexity Metrics serta Object-Oriented Metrics.

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