Process Orchestration Framework

A Java-based process orchestration framework that provides task scheduling, execution management, and process flow control capabilities.

Overview

This framework allows you to define and execute complex process workflows with dependent tasks, timeouts, and state management. It uses a database backend for persistence and provides robust error handling and process control.

Key Components

Core Classes

• ProcessOrchestrator - Main orchestration engine that manages process execution
• ProcessDefinition - Defines process structure and task dependencies
• Process - Handles the execution of process instances
• TaskExecutorService - Custom executor service for task management with timeout capabilities

Data Models

• ProcessInstanceImpl - Process instance implementation with state management
• TaskInstanceImpl - Task instance implementation with execution state tracking
• DataContext - Context storage for process and task data

Repositories

• ContextRepository - Manages persistence of context data
• ProcessInstanceRepository - Handles process instance persistence
• TaskInstanceRepository - Manages task instance persistence

Execution Components

• TaskExecutionWrapper - Wraps task execution with callback handling
• TerminateRunnable - Handles graceful task termination

Features

• Task dependency management
• Process and task state persistence
• Timeout handling for tasks
• Asynchronous task execution
• Process termination capabilities
• Version control for data consistency
• Context data management
• Error handling and recovery

Database Schema

The framework uses the following tables:

• po_context - Stores context data
• pe_process_instance - Stores process instances
• pe_task_instance - Stores task instances