yzhao244 commented 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:
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.
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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