ds-sim - The Distributed Systems Simulator

Age	Commit message (Collapse)	Author
2025-06-20	Implement proper exception hierarchy and consistent error handling	Paul Buetow
	- Create base exception classes: - VSSimulatorException: Base checked exception for all simulator errors - VSSimulatorRuntimeException: Base unchecked exception for unrecoverable errors - Refactor existing exceptions to extend from base class: - VSEventNotCopyableException: Now includes better error messages - VSParseIntegerVectorException: Added constructors with cause support - VSNegativeNumberException: Added field name and value parameters - Add new specific exception types: - VSConfigurationException: For configuration errors - VSSerializationException: For save/load operations - VSProcessException: For process-related errors - VSProtocolException: For protocol execution errors - Create VSErrorHandler utility class: - Centralized error logging and user notification - Consistent error handling patterns - Helper methods for warning and error dialogs - Update exception handling in code: - VSClassLoader: Better error messages and specific exception handling - Timestamp events: Catch RuntimeException for custom actions - All 132 unit tests pass 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <noreply@anthropic.com>
2025-06-20	Improve code quality: Replace instanceof with polymorphism and extract constants	Paul Buetow
	Major improvements: 1. Replace instanceof checks with polymorphic methods in VSAbstractEvent hierarchy - Added isInternalEvent(), isMessageReceiveEvent(), etc. methods - Added getEventPriority() for clean event ordering - Added shouldIncreaseTimestamps() to control timestamp behavior - Refactored VSTask to use these polymorphic methods 2. Extract magic numbers and strings to constants - Created VSConstants class for centralized configuration values - Added event priority constants (PRIORITY_HIGHEST, PRIORITY_HIGH, etc.) - Extracted string constants like CLASS_PREFIX - Moved magic numbers to named constants (PERCENTAGE_RANGE, etc.) 3. Update tests to work with new polymorphic approach - Fixed mocking in VSTaskTest to return correct values - All 132 tests passing These changes improve maintainability, reduce coupling, and make the codebase more self-documenting. The polymorphic approach eliminates type checking and makes it easier to add new event types. 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <noreply@anthropic.com>