graphql-engine/server/src-rsr/migrations/43_to_44.sql
Lyndon Maydwell 59c01786fe Optimistic Metadata Locking
Add optimistic concurrency control to the ‘replace_metadata’ call.

Prevents users from submitting out-of-date metadata to metadata-mutating APIs.

See https://github.com/hasura/graphql-engine-mono/issues/472 for details.

GitOrigin-RevId: 5f220f347a3eba288a9098b01e9913ffd7e38166
2021-02-19 02:40:23 +00:00

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SQL

-- This migration adds versioning to metadata, used for optimistic locking in UIs.
-- TODO: Are there changes required in catalog_versions.txt
ALTER TABLE hdb_catalog.hdb_metadata ADD COLUMN "resource_version" INTEGER NOT NULL DEFAULT 1 UNIQUE;