Overview

OpenSpaces realizes the Processing Unit concept of Space-Based Architecture (SBA) by allowing simple development, packaging and deployment of application services together with middleware services. OpenSpaces defines a structure for a Processing Unit.

The Processing Unit configuration is done using Spring with deploy/runtime context extensions, such as cluster info and bean level properties. This allows you to use the same Processing Unit deployment with no changes, and deploy it within different environments (pre-prod, prod, etc.).

OpenSpaces also comes with several containers that allow you to run/deploy a Processing Unit. The containers include an integrated container (mainly used within IDEs), a standalone container, and an SLA container.

OpenSpaces also allows you to deploy a JEE web application onto the SLA container. Any type of web applications can be deployed, and the introduction of Space, and SBA, becomes even simpler. The web capabilities are described in the Web Container section.

Section Contents

• Processing Unit Containers
  • Integrated Processing Unit Container — Allows you to run a Processing Unit within an embedded environment.
  • Pure Client — Allows you to use OpenSpaces within pure (non processing unit) client.
  • Service Grid Processing Unit Container — OpenSpaces uses GigaSpaces Service Grid as an SLA-driven container for deploying Processing Units over a dynamic pool of machines, based on the Processing Unit SLA definitions.
  • Standalone Processing Unit Container — Allows you to run a Processing Unit in standalone mode, meaning that the Processing Unit is run under its own constructed classloader, based on the Processing Unit structure.
• Processing Unit Context
  • Processing Unit Context - Bean Level Properties — OpenSpaces uses and enhances the Spring PropertyPlaceholderConfigurer to provide powerful and simple properties-based injection.
  • Processing Unit Context - Cluster Info — Cluster construction information is provided by the different Processing Unit containers, and is abstracted in a class called ClusterInfo, which is injected into the Spring application context.
• Processing Unit Structure — Processing Unit directory structure.