Problem Statement
What is static code analysis in CI/CD?
Explanation
Static code analysis examines source code without execution, detecting bugs, security vulnerabilities, code smells, and style violations. Tools: SonarQube (multi-language), ESLint (JavaScript), Pylint (Python), RuboCop (Ruby), Checkstyle (Java). Analysis identifies: potential null pointer exceptions, SQL injection vulnerabilities, unused variables, code duplication, complexity issues, style violations.
SonarQube analyzes code quality dimensions: bugs (potential errors), vulnerabilities (security issues), code smells (maintainability issues), coverage (test coverage), duplications (code duplication). Quality gates define passing criteria (e.g., no critical bugs, coverage > 80%). Failed quality gate blocks merge or deployment.
CI/CD integration: run analysis on every commit/pull request, fail build on critical issues, display results in dashboard, track quality trends over time. Early detection prevents bugs reaching production. Understanding static analysis enables automated code quality enforcement.
