Migrate Gradle to Kotlin

[duanemay]

Expected Benefits

Developer Experience

• Type Safety: Compile-time checking of build script syntax and API usage
• IDE Support: Full autocomplete, refactoring
• Error Detection: Build script errors caught before execution
• Code Navigation: Jump to plugin/task definitions, find usages

Build Performance

• Faster Builds: Kotlin DSL leverages compilation caching for build scripts
• Better Incremental Builds: More precise dependency tracking

Maintainability

• Modern Syntax: Align with current Gradle best practices
• Consistent Style: Match Kotlin codebase conventions
• Better Refactoring: IDE-assisted renames and restructuring
• Documentation: Improved code completion shows parameter types and documentation

Team Productivity

• Reduced Build Script Bugs: Type checking prevents common configuration errors
• Easier Onboarding: IDE assistance helps new team members understand build logic
• Standardization: Move toward industry standard (Kotlin DSL is Gradle's recommended approach)

The conversion will modernize the build system while maintaining all existing functionality and improving the development experience for the team.

[Copilot]

Pull request overview

This PR migrates the project’s Gradle build configuration from Groovy DSL (*.gradle) to Kotlin DSL (*.gradle.kts), while keeping module structure and key build tasks (WAR packaging, docs generation, unit/integration test wiring) aligned with the existing build behavior.

Changes:

• Replaced Groovy build scripts with Kotlin DSL equivalents across root project and subprojects.
• Moved Gradle plugin definitions to the version catalog’s [plugins] section and adopted alias(libs.plugins.*) usage in build scripts.
• Refactored/ported various task configurations (test logging, docs generation, boot image settings, integration test startup/shutdown, etc.) into Kotlin DSL.

Reviewed changes

Copilot reviewed 16 out of 18 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
build.gradle.kts	New root Kotlin DSL build with shared repositories, dependency management, test logging/config, and utility tasks.
build.gradle	Removed legacy root Groovy DSL build script.
settings.gradle.kts	New Kotlin DSL settings including project includes and directory mappings.
settings.gradle	Removed legacy Groovy DSL settings script.
gradle/libs.versions.toml	Removed unused catalog entries and introduced [plugins] definitions for plugin aliases.
uaa/build.gradle.kts	New Kotlin DSL build for UAA module including WAR/BootWar setup, docs tasks, boot image config, and integration test lifecycle.
uaa/build.gradle	Removed legacy Groovy DSL build script for UAA.
server/build.gradle.kts	Updated server module build script to Kotlin DSL plugin block + dependency/task syntax updates.
model/build.gradle.kts	New Kotlin DSL build for model module including test-jar artifact publication and resource filtering.
model/build.gradle	Removed legacy Groovy DSL build script for model module.
model/build_properties.gradle.kts	New Kotlin DSL applied script to generate git/build properties during resource processing.
model/build_properties.gradle	Removed legacy Groovy applied script for build/git properties.
metrics-data/build.gradle.kts	New Kotlin DSL build for metrics-data module including resource filtering and test deps.
metrics-data/build.gradle	Removed legacy Groovy DSL build script for metrics-data module.
statsd/build.gradle.kts	New Kotlin DSL build for statsd WAR module (dependencies, test exclusions, disabled integrationTest/bootRun).
statsd/build.gradle	Removed legacy Groovy DSL build script for statsd module.
statsd-lib/build.gradle.kts	New Kotlin DSL build for statsd-lib module including test deps and integrationTest filtering.
statsd-lib/build.gradle	Removed legacy Groovy DSL build script for statsd-lib module.

[strehle]

beside copilot comments ok for me