Runtime rules engine

[joshua-koehler]

Support complex runtime rules defined in JsonLogic DML.

[Copilot]

Pull request overview

This PR introduces a runtime rules engine for feature flags using JsonLogic, enabling complex runtime evaluation rules beyond the simple key-value matching previously supported. The implementation maintains backward compatibility by keeping the legacy runtime evaluation alongside the new JsonLogic-based system.

Key Changes

• Added JsonLogic dependency for complex rule evaluation with case-insensitive matching
• Introduced new utility classes (JsonLogicEngine, JsonCaseDesensitizer) to handle JsonLogic rule evaluation and case normalization
• Extended Rollout model to support both legacy and new runtime evaluation formats

Reviewed changes

Copilot reviewed 7 out of 7 changed files in this pull request and generated 9 comments.

Show a summary per file

File	Description
pom.xml	Added json-logic-java dependency (v1.1.0) and configured Surefire plugin for test logging
src/test/resources/logging.properties	New logging configuration for test output
src/main/java/com/mixpanel/mixpanelapi/featureflags/model/Rollout.java	Extended to support both legacy runtime evaluation and new JsonLogic rules with backward-compatible constructors
src/main/java/com/mixpanel/mixpanelapi/featureflags/provider/LocalFlagsProvider.java	Updated flag evaluation logic to check both legacy and new runtime conditions
src/main/java/com/mixpanel/mixpanelapi/featureflags/util/JsonLogicEngine.java	New utility class for evaluating JsonLogic rules with case-insensitive data handling
src/main/java/com/mixpanel/mixpanelapi/featureflags/util/JsonCaseDesensitizer.java	New utility for case-insensitive normalization of JSON structures and Maps
src/test/java/com/mixpanel/mixpanelapi/featureflags/provider/LocalFlagsProviderTest.java	Added comprehensive tests for new JsonLogic runtime evaluation (16 new test cases) and updated existing tests to use constants