HonahX commented on code in PR #2223:
URL: https://github.com/apache/polaris/pull/2223#discussion_r2371040755
##########
runtime/service/src/main/java/org/apache/polaris/service/admin/PolarisAdminService.java:
##########
@@ -1737,6 +1761,80 @@ public boolean revokePrivilegeOnNamespaceFromRole(
.isSuccess();
}
+ /**
+ * Creates and persists the missing synthetic namespace entities for
external catalogs.
+ *
+ * @param catalogEntity the external passthrough facade catalog entity.
+ * @param namespace the expected fully resolved namespace to be created.
+ * @param existingPath the partially resolved path currently stored in the
metastore.
+ * @return the fully resolved path wrapper.
+ */
+ private PolarisResolvedPathWrapper createSyntheticNamespaceEntities(
+ CatalogEntity catalogEntity, Namespace namespace,
PolarisResolvedPathWrapper existingPath) {
+
+ if (existingPath == null) {
+ throw new IllegalStateException(
+ String.format("Catalog entity %s does not exist.",
catalogEntity.getName()));
+ }
+
+ List<PolarisEntity> completePath = new
ArrayList<>(existingPath.getRawFullPath());
+ PolarisEntity currentParent = existingPath.getRawLeafEntity();
+
+ String[] allNamespaceLevels = namespace.levels();
+ int numMatchingLevels = 0;
+ // Find parts of the complete path that match the namespace levels.
+ // We skip index 0 because it is the CatalogEntity.
+ for (PolarisEntity entity : completePath.subList(1, completePath.size())) {
+ if (!entity.getName().equals(allNamespaceLevels[numMatchingLevels])) {
+ break;
+ }
+ numMatchingLevels++;
+ }
+
+ for (int i = numMatchingLevels; i < allNamespaceLevels.length; i++) {
+ String[] namespacePart = Arrays.copyOfRange(allNamespaceLevels, 0, i +
1);
+ String leafNamespace = namespacePart[namespacePart.length - 1];
+ Namespace currentNamespace = Namespace.of(namespacePart);
+
+ // TODO: Instead of creating synthetic entitties, rely on external
catalog mediated backfill.
+ PolarisEntity syntheticNamespace =
+ new NamespaceEntity.Builder(currentNamespace)
+
.setId(metaStoreManager.generateNewEntityId(getCurrentPolarisContext()).getId())
+ .setCatalogId(catalogEntity.getId())
+ .setParentId(currentParent.getId())
+ .setCreateTimestamp(System.currentTimeMillis())
+ .build();
+
+ EntityResult result =
+ metaStoreManager.createEntityIfNotExists(
+ getCurrentPolarisContext(),
+ PolarisEntity.toCoreList(completePath),
+ syntheticNamespace);
+
+ if (result.isSuccess()) {
+ syntheticNamespace = PolarisEntity.of(result.getEntity());
+ } else {
Review Comment:
I think it would be better if we check the result status is
`ENTITY_ALREADY_EXISTS` before entering the `getPassthroughResolvedPath` below.
Though `ENTITY_ALREADY_EXISTS` is the only error status now, there could be
more in the future and we also have a general `UNEXPECTED_ERROR` status, where
we do not want to proceed but just throw an exception.
##########
runtime/service/src/main/java/org/apache/polaris/service/admin/PolarisAdminService.java:
##########
@@ -1737,6 +1761,80 @@ public boolean revokePrivilegeOnNamespaceFromRole(
.isSuccess();
}
+ /**
+ * Creates and persists the missing synthetic namespace entities for
external catalogs.
+ *
+ * @param catalogEntity the external passthrough facade catalog entity.
+ * @param namespace the expected fully resolved namespace to be created.
+ * @param existingPath the partially resolved path currently stored in the
metastore.
+ * @return the fully resolved path wrapper.
+ */
+ private PolarisResolvedPathWrapper createSyntheticNamespaceEntities(
Review Comment:
[non-blocker] We may consider extract this and the table creation one out
from `PolarisAdminService` to a separate class, or within the
`ResolutionManifest`, to make `PolarisAdminService` focusing on the admin
logics. But we could do any big refactoring like this in follow-ups
--
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
To unsubscribe, e-mail: [email protected]
For queries about this service, please contact Infrastructure at:
[email protected]
