Iona Catches the Open-Source Service Bus
Celtix Enterprise offers an ESB pulled from Eclipse, Apache open standards projects
January 1, 2007 —
Although enterprise customers are thought of as being reluctant to embrace new technologies, they appear to be ready to consider an open-source enterprise service bus. At least, that’s the bet that Iona is placing on its new Celtix Enterprise ESB, based on several open-source distributed SOA infrastructure projects led by the company.
At the same time, recognizing that customers may not require the whole enchilada, Iona last month announced that two of the Celtix (pronounced with a soft “c”) Enterprise components—Celtix Advanced Messaging and Celtix Advanced Service Engine—would be separately available. All members of the Celtix Enterprise family are priced by subscription.
Debbie Moynihan, Iona’s director of open-source programs, explained how Celtix complements the company’s Artix product family: “Both Artix and Celtix are built on similar plug-in architectures. Celtix is designed specifically for the broader market, [a customer] that uses the widely adopted standards, like Java and SOAP. That market typically doesn’t have a requirement for a wide array of transports and platforms. Artix, on the other hand, is really designed for performance-demanding distributed environments across multiple platforms.”
The tooling for Celtix Enterprise ESB comes out of the Eclipse SOA Tools Platform Project, which is led by Iona, while Apache Incubator projects—including one with roots in an Iona sponsorship—are responsible for messaging and the services framework.
Celtix Advanced Messaging is based on the Apache Incubator project Qpid, and implements the Advanced Message Queuing Protocol (AMQP). Advanced messaging offers multiple messaging patterns, including point-to-point queuing, request-reply and publish-and-subscribe methods.
SASL (Simple Authentication and Security Layer) provides pluggable messaging security, and the wire-level protocol is interoperable with other messaging APIs, including JMS. A full implementation of the ActiveMQ JMS—also an Apache-incubated project—is a key component of the Celtix Enterprise runtime.
The Advanced Service Engine (ASE) in Celtix Enterprise supports an alphabet soup of Java and Web services standards, including SOAP 1.1/1.2, JAX-WS, WS-RM (Reliable Messaging), WS-Addressing and WS-Security. An extensibility API enables developers to add support for other messaging formats as necessary.
The core of ASE relies on code from a third Apache Incubator project, CXF, or CeltiXfire. CXF is itself a combination of projects from Codehaus and ObjectWeb, host of the original Celtix project under Iona’s sponsorship.
Celtix Enterprise works with any JMX (Java Management Extensions) management console, and allows the use of a variety of deployment models, including Apache Tomcat and Spring containers, as well as Java EE and Java Business Integration containers.
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