Antalya 26.6: Cache vended catalog credentials - #2180
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…next commit) --- Original cherry-pick message follows: Merge pull request #1923 from Altinity/fix/antalya-26.3/iceberg-creds Antalya 26.3: Cache vended catalog credentials # Conflicts: # docs/en/engines/database-engines/datalake.md # src/Common/ProfileEvents.cpp # src/Databases/DataLake/DatabaseDataLake.cpp # src/Databases/DataLake/RestCatalog.cpp # src/Databases/DataLake/RestCatalog.h # src/Databases/DataLake/StorageCredentials.h
Kept only the source PR's own additions; dropped "theirs"-side context that belongs to other PRs and is absent on antalya-26.6 (`namespaces` docs row, `object_storage_cluster` setting extern, `RestCatalog::AllowedNamespaces`, the REST/Glue/Unity catalog ProfileEvents block, and the older `std::optional<AccessToken> access_token` member). Adapted: placed the two new ProfileEvents rows (DataLakeRestCatalogCredentialsVended / ...CacheHits) at the end of APPLY_FOR_BUILTIN_EVENTS and declared them via a new `namespace ProfileEvents` block plus `#include <Common/ProfileEvents.h>` in RestCatalog.cpp — antalya-26.6 does not have the Iceberg catalog ProfileEvents instrumentation (PR #1868, commit 23a9f20) that the source PR extended Adapted: moved the setVendedCredentialsCacheTTL() call into antalya-26.6's lazy `DatabaseDataLake::getCatalog()` accessor (catalog construction now lives in `initialize()`), right before `return catalog_impl;` as in the source PR Adapted: implemented `isEmpty()` for `GCSCredentials`, a subclass added on antalya-26.6 after the source PR, which the PR's new pure-virtual `IStorageCredentials::isEmpty()` requires
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Changelog entry (a user-readable short description of the changes that goes to CHANGELOG.md):
Add caching for REST catalog vended credentials. Added a new setting
vended_credentials_cache_ttl: maximum cache entry lifetime (in seconds) for vended credentials (REST catalogs only). Default300;0disables caching (#1923 by @zvonand).CI/CD Options
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Cherry-picked from #1923.