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• What are system schemas
• How do you identify a system schema
• How to create system schema

What are system schemas

System schemas are schemas which are available to all the data partitions within an OSDU deployment out of the box.

How do you identify a system schema

The scope field is set to SHARED for system schemas in the schemaInfo section. Sample schemaInfo for system schemas:

{
  "schemaInfo": {
    "schemaIdentity": {
      "authority": "osdu",
      "source": "wks",
      "entityType": "work-product-component--WellLog",
      "schemaVersionMajor": 1,
      "schemaVersionMinor": 0,
      "schemaVersionPatch": 0,
      "id": "osdu:wks:work-product-component--WellLog:1.0.0"
    },
    "createdBy": "OSDU Data Definition Group",
    "scope": "SHARED",
    "status": "DEVELOPMENT"
  },
  "schema": {
  }
}

How to create system schema

You can create system schemas by (to be introduced) schemas/system endpoint in your schema service. Find more details in the ADR: #51

The schemas/system endpoint differs from the regular /schema endpoint in two ways:

1. It does not accept the data-partition-id header. Since the schemas being created belong to no data-partition in particular, the API does not allow users to pass data-partition-id header. If you do pass the header, the request would fail with error indicating data-partition-id header should not be supplied.
2. The API works on service principal auth only. The authorization mechanism is similar to what we have in partition service related APIs. Refer example https://community.opengroup.org/osdu/platform/system/partition/-/blob/master/partition-core/src/main/java/org/opengroup/osdu/partition/api/PartitionApi.java#L49