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Inside the OMRS are 4 major groups of components: Enterprise Repository Services, Administration Services, Cohort Services and Local Repository Services
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Figure 2: Component Overview (level 1) | - Enterprise Repository Services provides a virtual metadata repository by combining the content of multiple open metadata repositories and delivering this metadata through a single API and event topic. The Enterprise Repository Services provide the enterprise access metadata support for the OMASs.
- Administration Services drive the initialization of the OMRS at server start up plus access to the OMRS's internal status. It relies on the OMAG Server to supply it with the configuration information to initialize the connectors it should use and connector with other open metadata servers.
- Cohort Services manage the local server's membership in one or more open metadata repository cohorts.
- Local Repository Services manage the local server's open metadata repository.
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Figure 4: Component Overview (level 2) |
The components are:
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- OMRS Metadata Highway Manager - manages the collection of cohorts that this server is connected to.
- OMRS Cohort Manager - manages the components for connectivity to a single cohort.
- OMRS Repository Event Manager - manages the distribution of TypeDef and instances events amongst the OMRS components within a server.
- OMRS Event Publisher - formats and sends events to the OMRS Topic.
- OMRS Event Listener - receives events from an OMS Topic and passes them to registered OMRS Components.
- OMRS Cohort Registry - manages the exchange of registration events with other members of an open metadata repository cohort and stores details of the cohort's membership in the Cohort Registry Store.
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