Architectural Overview

Database Bindings/Support

• Oracle
• Microsoft SQL Server

Installer

• Based on izPack (Java)
• Bundles all components

Update/Migration

• DB updates are based on migration packages
• Python-based migration framework is included in the server

Python

• Used as scripting language throughout the application
• Bundled versions of CPython (native server) and IronPython (GUI client)
• API provides access to server and client functionality [links]

YAJSW - Yet Another Java Service Wrapper

• Provides daemon and init scripts on linux, or service on windows
• Invokes java server, monitoring

Monitoring

• Checks for DB availability
• Checks for server availability
• Web-based interface (Jetty)

Java Server (Standalone)

• Provides DB interface via Hibernate/JDBC
• Exposes minimalist REST interface towards monitoring
• Communicates with native server components via protocol buffers through (local) network socket
• Logging via slf4j, using logback as backend
• Invokes native server

Native Server (Piggyback)

• Accepts incoming client connections
• Invokes per-session process
• Connects to java server
• Communicates with client via XML protocol through network socket

Client

• Connects to native server
• Either GUI or headless
• GUI can be either pre-installed or deployed via ClickOnce

Authentication Schemes

• Interactive (username/password)
• Kerberos
• Single Sign-On via CredentialManager