beinan opened a new pull request, #8825:
URL: https://github.com/apache/gravitino/pull/8825
### What changes were proposed in this pull request?
- add the new lance-common and lance-rest-server modules that bootstrap a
minimal Lance catalog REST facade backed by in-memory state
- introduce REST resources (LanceCatalogOperations,
LanceMetadataOperations) plus a GravitinoLanceRESTServer entry point and
auxiliary service wiring
- package assets for the Lance REST server (config + startup script) and
hook the module into Gradle distribution/standalone tarball tasks with checksums
- extend build dependencies (SLF4J, Dropwizard metrics, Prometheus bridge)
so the service runs using existing Gravitino telemetry components
- surface scaffolding build.gradle.kts under lance/ to disable blanket
task execution and ensure module resolution
### Why are the changes needed?
- the Lance integration needs a thin REST façade to iterate on metadata
APIs before the backend is available; this scaffolding mirrors the Iceberg REST
flow
- distribution packaging must include the new service so it can be
assembled, tested, and deployed alongside other Gravitino auxiliaries
Fix: #N/A
### Does this PR introduce any user-facing change?
- new Lance REST server tarball and config/script templates shipped with
the distribution
- new REST endpoints under /lance/v1/... exposing catalog metadata
(namespaces, tables)
- no breaking changes to existing services
### How was this patch tested?
- ./gradlew :lance:lance-rest-server:build
- started the service locally with java -cp
lance/lance-rest-server/build/libs/* ...GravitinoLanceRESTServer
/tmp/gravitino-lance-rest-server.conf
- curl http://127.0.0.1:9101/lance/v1/catalog
- curl http://127.0.0.1:9101/lance/v1/catalog/namespaces
- curl
"http://127.0.0.1:9101/lance/v1/metadata/table?namespace=default&name=sample_table";
- curl -X POST http://127.0.0.1:9101/lance/v1/catalog/namespaces -H
'Content-Type: application/json' -d '{"namespace":"demo"}'
- curl -X DELETE http://127.0.0.1:9101/lance/v1/catalog/namespaces/demo
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