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Registry service for Apache Kafka which keeps track of topics, consumer-groups, acls, quotas and their configuration/state/metadata across multiple kafka-clusters. It allows performing administrative operations such as inspecting/creating/deleting/re-configuring topics/consumer-groups. It also provides various analytical tools such as: SQL querying metadata; viewing topic records; analyzing json record structures; re-balancing cluster tools; etc.

iServe is what we refer to as service warehouse which unifies service publication, analysis, and discovery through the use of lightweight semantics as well as advanced discovery and analytic capabilities. iServe provides the typical features of service registries and additional functionality that exploits service descriptions, service annotations and further data gathered and derived from the analysis of these descriptions, data crawled from the Web, periodic monitoring and user activities. iServe builds upon lessons learnt from research and development on the Web and on service discovery algorithms to provide a generic semantic service registry able to support advanced discovery over both Web APIs and WSDL services described using heterogeneous formalisms.

In order to get around the JBI Lifecycle Classpath limitation in the application server, a new JBI jar file is being created called esb_jbi_framework.jar. This jar file will contain a MANIFEST.MF file that contains Class-Path: entries that point towards the jbi_rt.jar (JBI Runtime) and jbi_tests.jar (Scaffolding Registry et al) . This way we dont have to combine the throwaway jbi_tests.jar with the main jbi_rt.jar later. We would simply have to dereference it from jbi_framework.jar. Likewise adding a new JAR to the same classpath would simply mean adding a new entry to the ClassPath: header field.

The OODT grid services (product and profile services) use CORBA or RMI as their underlying network transport. However, limitations of CORBA and RMI make them inappropriate for large-scale deployments. For one, both are procedural mechanisms, providing a remote interface that resembles a method call. This makes streaming of data from a service impossible, because there are limitations to the sizes of data structures that can be passed over a remote method call. Instead, repeated calls must be made to retrieve each block of a product, making transfer speeds horribly slow compared to HTTP or FTP. (Block-based retrieval of profiles was never implemented, resulting in out of memory conditions for large profile results, which is another problem.) Second, both CORBA and RMI rely on a central name registry. The registry makes an object independent of its network location, enabling a client to call it by name (looking up its last known location in the registry). However, this requires that server objects be able to make outbound network calls to the registry (through any outbound firewall), and that the registry accept those registrations (through any inbound firewall). This required administrative action at institutions hosting server objects and at the institution hosting the registry. Often, these firewall exceptions would change without notice as system adminstrators changed at each location (apparently firewall exceptions are poorly documented everywhere). Further, in the two major deployments of OODT (PDS and EDRN), server objects have almost never moved, nullifying any benefit of the registry. This project, OODT Web Grid Services, avoids the prolems of CORBA and RMI by using HTTP as the transport mechanism for products and profiles. Further, it provides a password-protected mechanism to add new sets of product and profile query handlers, enabling seamless activation of additional capabilities.