graphql-engine/server/src-lib/Hasura/RQL/DDL/Schema/Catalog.hs

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-- | Functions for loading and modifying the catalog. See the module documentation for
-- "Hasura.RQL.DDL.Schema" for more details.
module Hasura.RQL.DDL.Schema.Catalog
( fetchCatalogData
, saveTableToCatalog
, updateTableIsEnumInCatalog
, updateTableConfig
, deleteTableFromCatalog
, getTableConfig
) where
import Hasura.Prelude
import qualified Data.Text as T
import qualified Database.PG.Query as Q
-- import Data.Time.Clock
import Data.Aeson
import Hasura.Db
import Hasura.RQL.Types.Catalog
import Hasura.RQL.Types.Common
import Hasura.RQL.Types.Error
import Hasura.RQL.Types.SchemaCache
import Hasura.SQL.Types
fetchCatalogData :: (MonadTx m) => m CatalogMetadata
fetchCatalogData = do
-- startTime <- liftTx $ liftIO getCurrentTime
metadataBytes <- (liftTx $ runIdentity . Q.getRow <$> Q.withQE defaultTxErrorHandler $(Q.sqlFromFile "src-rsr/catalog_metadata.sql") () True)
-- afterFetchTime <- liftTx $ liftIO getCurrentTime
-- liftTx $ liftIO $ putStrLn $
-- "----> [fetch/query] " <> show (afterFetchTime `diffUTCTime` startTime)
let !decodedValue = force (eitherDecodeStrict' metadataBytes)
-- afterDecodeTime <- liftTx $ liftIO getCurrentTime
-- liftTx $ liftIO $ putStrLn $
-- "----> [fetch/decode] " <> show (afterDecodeTime `diffUTCTime` afterFetchTime)
decodedValue `onLeft` \err -> throw500 (T.pack err)
saveTableToCatalog :: (MonadTx m) => QualifiedTable -> SystemDefined -> Bool -> TableConfig -> m ()
saveTableToCatalog (QualifiedObject sn tn) systemDefined isEnum config = liftTx $
Q.unitQE defaultTxErrorHandler [Q.sql|
INSERT INTO "hdb_catalog"."hdb_table"
(table_schema, table_name, is_system_defined, is_enum, configuration)
VALUES ($1, $2, $3, $4, $5)
|] (sn, tn, systemDefined, isEnum, configVal) False
where
configVal = Q.AltJ $ toJSON config
updateTableIsEnumInCatalog :: (MonadTx m) => QualifiedTable -> Bool -> m ()
updateTableIsEnumInCatalog (QualifiedObject sn tn) isEnum = liftTx $
Q.unitQE defaultTxErrorHandler [Q.sql|
UPDATE "hdb_catalog"."hdb_table" SET is_enum = $3
WHERE table_schema = $1 AND table_name = $2
|] (sn, tn, isEnum) False
updateTableConfig :: (MonadTx m) => QualifiedTable -> TableConfig -> m ()
updateTableConfig (QualifiedObject sn tn) config = liftTx $
Q.unitQE defaultTxErrorHandler [Q.sql|
UPDATE "hdb_catalog"."hdb_table"
SET configuration = $1
WHERE table_schema = $2 AND table_name = $3
|] (configVal, sn, tn) False
where
configVal = Q.AltJ $ toJSON config
deleteTableFromCatalog :: (MonadTx m) => QualifiedTable -> m ()
deleteTableFromCatalog (QualifiedObject sn tn) = liftTx $ Q.unitQE defaultTxErrorHandler [Q.sql|
DELETE FROM "hdb_catalog"."hdb_table"
WHERE table_schema = $1 AND table_name = $2
|] (sn, tn) False
getTableConfig :: MonadTx m => QualifiedTable -> m TableConfig
getTableConfig (QualifiedObject sn tn) = liftTx $
Q.getAltJ . runIdentity . Q.getRow <$> Q.withQE defaultTxErrorHandler
[Q.sql|
SELECT configuration::json FROM hdb_catalog.hdb_table
WHERE table_schema = $1 AND table_name = $2
|] (sn, tn) True