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Concept
OSGi
Summary
OSGi is an open specification and open source project under the Eclipse Foundation. It is a continuation of the work done by the OSGi Alliance (formerly known as the Open Services Gateway initiative), which was an open standards organization for computer software founded in March 1999. The foundation originally specified and maintained the OSGi standard. The alliance transferred its work to the Eclipse Foundation at the end of 2020. The OSGi specification describes a modular system and a service platform for the Java programming language that implements a complete and dynamic component model, something that does not exist in standalone Java or VM environments. It has a service-oriented architecture based on micro services each implemented as an extended Java class file archive ().
OSGi is built around a service-oriented architecture. Applications or components, come in the form of bundles for deployment, can be remotely installed, started, stopped, updated, and uninstalled without requiring a reboot. Management of Java packages/classes is specified in great detail. Application life cycle management is implemented via APIs that enable remote downloading of management policies. The service registry enables bundles to detect the addition of new services or the removal of services, and adapt accordingly.
The OSGi specifications have evolved beyond the original focus of service gateways, and are now used in applications ranging from mobile phones to the open-source Eclipse IDE. Other application areas include automobiles, industrial automation, building automation, PDAs, grid computing, entertainment, fleet management and application servers.
In October 2020, the OSGi Alliance announced the transition of the standardization effort to the Eclipse Foundation, subsequent to which it would shut down. All artifacts have been transferred to the Eclipse Foundation, where an “OSGi Working Group" continues to maintain and evolve the specification.
The OSGi specification is developed by the members in an open process and made available to the public free of charge under the OSGi Specification License.
Official source
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