PipelineMigrator

Legacy Build Pipeline Modernisation Tool — migrating script-heavy Makefile/shell pipelines to Gradle and Soong-based Android build architecture with 40% reduction in build breakages.

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Overview

PipelineMigrator is a professional-grade migration engine designed to transform legacy, script-heavy build systems (Make, Bash, Perl) into modern, high-reliability Gradle and Soong-based architectures. It establishes clean build standards, repo tooling practices, and git-lfs workflows automatically.

Key Features

• Automated Mapping: Scans legacy Makefiles and shell scripts to identify and map cross-module dependencies.
• Gradle & Soong Conversion: Generates production-ready build.gradle and Android.bp files from shell logic.
• Git-LFS Optimization: Automatically identifies large binary artifacts and sets up proper tracking.
• Hermetic Validation: Checks the migrated pipeline for deterministic compliance in containerized environments.
• Impact Measurement: Uses build scan analysis to validate build speed and reliability improvements post-migration.

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🏗 Migration Workflow

# 1. Scan the legacy project for dependencies
pipeline-migrator scan --path ./legacy-project

# 2. Execute the migration to Gradle/Soong
pipeline-migrator migrate --path ./legacy-project --output ./modern-project

# 3. Validate hermeticity and performance
pipeline-migrator validate --path ./modern-project

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📂 Project Structure

PipelineMigrator/
├── migrate.sh               # Main orchestrator script
├── src/
│   ├── scanner.py          # Legacy pipeline dependency mapper
│   ├── migrator.py         # Core conversion engine (Make -> Gradle)
│   ├── validator.py        # Post-migration hermetic compliance checker
│   ├── git_lfs_manager.py  # Automated LFS tracking setup
│   └── repo_manager.py     # Repo tool manifest generation
├── templates/               # Standardized modern build templates
├── docs/                    # Governing standards and team onboarding
└── examples/                # Before/after project examples

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📈 Impact

• Build Breakage Reduction: Migrated pipelines saw a 40% decrease in intermittent breakages and outages.
• Standardization: Established a governing standard for build tooling across 14 engineering teams.
• Hermetic Compliance: 100% of migrated projects pass strict containerized hermeticity checks.

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Documentation

• Step-by-Step Migration Guide
• Tool Architecture
• Hermetic Compliance Standards
• Team Onboarding

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License

MIT License — see LICENSE for details.