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The OMRS Cluster Registry Store stores information about the repositories registered in the open metadata repository cluster. 

 

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Figure 1: Cluster registry stores in an open metadata repository cluster

Each server in the open metadata repository cluster runs an OMRS Cluster Registry to manage its registration with the cluster and maintain the contents of its local cluster registry store. 

 

 

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Figure 2: logical structure of the cluster registry store

Each member in the open metadata repository cluster is represented in the cluster registry store with a member registration record.  This has 3 values in it:

  • Repository Id - this is a unique string that identifies the repository.
  • Registration Timestamp - this is the time that the server registered its repository.
  • Remote Connection - this is the connection information that a remote server can use to create a connector to query values in the repository.

Inside the cluster registry store is a record of the local server's registration and a list of registration record for each remote repository that it knows about.

 

The OMRS Cluster Registry store is implemented as an OCF Connector so the implementation is configurable.  The initial implementation is a file based store that uses JSON.


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