graphql-engine/server/src-lib/Hasura/Backends/Postgres/DDL/Source/Version.hs

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{-# LANGUAGE QuasiQuotes #-}
-- | Postgres DDL Source Version
--
-- Deals with catalog version - used by 'Hasura.Backends.Postgres.DDL.Source'.
module Hasura.Backends.Postgres.DDL.Source.Version
( SourceCatalogVersion,
initialSourceCatalogVersion,
latestSourceCatalogVersion,
previousSourceCatalogVersions,
getSourceCatalogVersion,
setSourceCatalogVersion,
)
where
import Data.Text qualified as T
import Database.PG.Query qualified as PG
import Hasura.Backends.Postgres.Connection
import Hasura.Base.Error
import Hasura.Prelude
import Hasura.SQL.Backend (BackendType (Postgres), PostgresKind)
import Hasura.Server.Migrate.Version qualified as Version
type SourceCatalogVersion (pgKind :: PostgresKind) = Version.SourceCatalogVersion ('Postgres pgKind)
initialSourceCatalogVersion :: SourceCatalogVersion pgKind
initialSourceCatalogVersion = Version.SourceCatalogVersion 0
latestSourceCatalogVersion :: SourceCatalogVersion pgKind
latestSourceCatalogVersion = Version.SourceCatalogVersion 3
previousSourceCatalogVersions :: [SourceCatalogVersion pgKind]
previousSourceCatalogVersions = [initialSourceCatalogVersion .. pred latestSourceCatalogVersion]
setSourceCatalogVersion :: MonadTx m => m ()
setSourceCatalogVersion =
liftTx $
PG.unitQE
defaultTxErrorHandler
[PG.sql|
INSERT INTO hdb_catalog.hdb_source_catalog_version(version, upgraded_on)
VALUES ($1, NOW())
ON CONFLICT ((version IS NOT NULL))
DO UPDATE SET version = $1, upgraded_on = NOW()
|]
(Identity (tshow latestSourceCatalogVersion))
False
getSourceCatalogVersion :: MonadTx m => m (SourceCatalogVersion postgres)
getSourceCatalogVersion = do
versionText <-
liftTx $
runIdentity . PG.getRow
<$> PG.withQE
defaultTxErrorHandler
[PG.sql| SELECT version FROM hdb_catalog.hdb_source_catalog_version |]
()
False
readEither (T.unpack versionText) `onLeft` (throw500 . (("Invalid source catalog version in the metadata: " <>) . T.pack))