[GitHub] [incubator-eventmesh] yzhao244 edited a comment on issue #339: Integrate With OpenSchema

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yzhao244 edited a comment on issue #339:
URL: https://github.com/apache/incubator-eventmesh/issues/339#issuecomment-869855644


   What is the question:
   
   I am attempting a design which integrates with OpenSchema and is also easy to extend. 
   
   What would you like to be added:
   I suggest to add two more modules in overall eventmesh projects
   
   1. eventmesh-store-api 
     This is a interface module which contains schemas registry persistency APIs such as the followings. 
   ```
     public interface EventSchemaService extends SchemaRegistry  {
   	void createSchema(SchemaRequest schemaRequest);
   
       List<SchemaResponse> readAllSchemas();
       
       void updateSchema(SchemaRequest schemaRequest, String schemaId);   
   	
       void deleteSchema(SchemaRequest schemaRequest, String schemaId);
     }
   ```	
     
   
   2. eventmesh-store-h2
      This module contains the actual implementation of EventSchemaService which integrates with OpenSchema. I proposed to leverage using h2 database for persisting schema registry in eventmesh.
      However, this is also a pluggable module. Therefore, vendors can implement persistency using other techniques such as file system or any other data stores at their own will.
   
      
   Why is this needed:
   
   1. It ensures extendibility of Schema Registry in eventmesh since vendors may have requirements of using different techniques such as in-memory db, mysql db or any other data store for persisting data.
   2. Furthermore, store layer can be extended with other management infomation for persistency such as subscriptions, topics. It is just this time we do for schema registry. :)


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