stevenzwu commented on code in PR #12584:
URL: https://github.com/apache/iceberg/pull/12584#discussion_r2600326283
##########
open-api/rest-catalog-open-api.yaml:
##########
@@ -3964,6 +4132,332 @@ components:
metadata:
$ref: '#/components/schemas/TableMetadata'
+ EventsResponse:
+ type: object
+ required:
+ - highest-processed-timestamp-ms
+ - events
+ properties:
+ next-page-token:
+ $ref: "#/components/schemas/PageToken"
+ highest-processed-timestamp-ms:
+ description: >
+ The highest event timestamp processed when generating this
response.
+ This may not necessarily appear in the returned changes if it was
filtered out.
+ type: integer
+ format: int64
+ events:
+ type: array
+ items:
+ $ref: "#/components/schemas/Event"
+
+ Event:
+ type: object
+ required:
+ - event-id
+ - request-id
+ - event-count
+ - timestamp-ms
+ - operation
+ properties:
+ event-id:
+ type: string
+ description: Unique ID of this event. Clients should perform
deduplication based on this ID.
+ request-id:
+ description: >
+ Opaque ID of the request this change belongs to.
+ This ID can be used to identify events that were part of the same
request.
+ Servers generate this ID randomly.
+ type: string
+ event-count:
+ type: integer
+ description: >
+ Total number of events in this batch or request.
+ Some endpoints, such as "updateTable" and "commitTransaction", can
perform multiple updates in a single atomic request.
+ Each update is modeled as a separate event. All events generated
by the same request share the same `request-id`.
+ The `event-count` field indicates the total number of events
generated by that request.
+ timestamp-ms:
+ type: integer
+ format: int64
+ description: >
+ Timestamp when this event occurred (epoch milliseconds).
+ Timestamps are not guaranteed to be unique. Typically all events in
+ a transaction will have the same timestamp.
+ actor:
+ type: string
+ description: >
+ The actor who performed the operation, such as a user or service
account.
+ The content of this field is implementation specific.
+ operation:
+ type: object
+ description: >
+ The operation that was performed, such as creating or updating a
table.
+ Clients should discard events with unknown operation types.
+ discriminator:
+ propertyName: operation-type
+ mapping:
+ create-table: "#/components/schemas/CreateTableOperation"
+ register-table: "#/components/schemas/RegisterTableOperation"
+ drop-table: "#/components/schemas/DropTableOperation"
+ update-table: "#/components/schemas/UpdateTableOperation"
+ rename-table: "#/components/schemas/RenameTableOperation"
+ create-view: "#/components/schemas/CreateViewOperation"
+ drop-view: "#/components/schemas/DropViewOperation"
+ update-view: "#/components/schemas/UpdateViewOperation"
+ rename-view: "#/components/schemas/RenameViewOperation"
+ create-namespace: "#/components/schemas/CreateNamespaceOperation"
+ update-namespace-properties:
"#/components/schemas/UpdateNamespacePropertiesOperation"
+ drop-namespace: "#/components/schemas/DropNamespaceOperation"
+ custom: "#/components/schemas/CustomOperation"
+ oneOf:
+ - $ref: "#/components/schemas/CreateTableOperation"
+ - $ref: "#/components/schemas/RegisterTableOperation"
+ - $ref: "#/components/schemas/DropTableOperation"
+ - $ref: "#/components/schemas/UpdateTableOperation"
+ - $ref: "#/components/schemas/RenameTableOperation"
+ - $ref: "#/components/schemas/CreateViewOperation"
+ - $ref: "#/components/schemas/DropViewOperation"
+ - $ref: "#/components/schemas/UpdateViewOperation"
+ - $ref: "#/components/schemas/RenameViewOperation"
+ - $ref: "#/components/schemas/CreateNamespaceOperation"
+ - $ref: "#/components/schemas/UpdateNamespacePropertiesOperation"
+ - $ref: "#/components/schemas/DropNamespaceOperation"
+ - $ref: "#/components/schemas/CustomOperation"
+
+ CreateTableOperation:
+ description: >
+ Operation to create a new table in the catalog.
+ Events for this Operation must be issued when the create is finalized
and committed, not when the create is staged.
+ required:
+ - operation-type
+ - identifier
+ - table-uuid
+ - updates
+ properties:
+ operation-type:
+ $ref: "#/components/schemas/OperationType"
+ const: "create-table"
+ identifier:
+ $ref: "#/components/schemas/TableIdentifier"
+ table-uuid:
+ type: string
+ format: uuid
+ updates:
+ type: array
+ items:
+ $ref: "#/components/schemas/TableUpdate"
Review Comment:
I don't fully get the reasons described earlier.
> 1. We already have all these events (AddSchemaUpdate,
AddPartitionSpecUpdate) in the event tables for updates anyway - adding
TableMetadata would add a very complex struct.
`TableMetadata` struct is already defined in the REST spec
> 2. Filters are much more useful this way - AddSchemaUpdate for example
wouldn't trigger for creates, so you couldn't just filter for "all schemas"
Should AddSchemaUpdate filter trigger/match create table?
> 3. Catalogs don't version TableMetadata, so we can't just load it from the
live store, as they are not snapshotted on creation. Thus returning
TableMetadata in the events endpoint requires duplicating this complex struct
for Events.
We are talking about CreateTable event. it would contains the full
TableMetadata info anyway (single entity or list of smaller sub entities).
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