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2c56254e5a
GITHUB_PR_NUMBER: 6152 GITHUB_PR_URL: https://github.com/hasura/graphql-engine/pull/6152 Co-authored-by: Antoine Leblanc <1618949+nicuveo@users.noreply.github.com> GitOrigin-RevId: 6c94aef8c57e852b3d41b8355c09e64fce756a7c
321 lines
13 KiB
Haskell
321 lines
13 KiB
Haskell
module Hasura.GraphQL.Execute.Insert
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( traverseAnnInsert
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, convertToSQLTransaction
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) where
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import Hasura.Prelude
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import qualified Data.Aeson as J
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import qualified Data.Environment as Env
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import qualified Data.HashMap.Strict as Map
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import qualified Data.Sequence as Seq
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import qualified Data.Text as T
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import qualified Database.PG.Query as Q
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import Data.Text.Extended
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import qualified Hasura.Backends.Postgres.Execute.Mutation as PGE
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import qualified Hasura.Backends.Postgres.Execute.RemoteJoin as PGE
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import qualified Hasura.Backends.Postgres.SQL.DML as PG
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import qualified Hasura.Backends.Postgres.Translate.BoolExp as PGT
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import qualified Hasura.Backends.Postgres.Translate.Insert as PGT
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import qualified Hasura.Backends.Postgres.Translate.Mutation as PGT
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import qualified Hasura.Backends.Postgres.Translate.Returning as PGT
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import qualified Hasura.RQL.IR.Insert as IR
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import qualified Hasura.RQL.IR.Returning as IR
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import qualified Hasura.Tracing as Tracing
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import Hasura.Backends.Postgres.Connection
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import Hasura.Backends.Postgres.SQL.Types
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import Hasura.Backends.Postgres.SQL.Value
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import Hasura.EncJSON
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import Hasura.RQL.Types
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import Hasura.Server.Version (HasVersion)
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traverseAnnInsert
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:: (Applicative f)
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=> (a -> f b)
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-> IR.AnnInsert backend a
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-> f (IR.AnnInsert backend b)
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traverseAnnInsert f (IR.AnnInsert fieldName isSingle (annIns, mutationOutput)) =
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IR.AnnInsert fieldName isSingle
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<$> ( (,)
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<$> traverseMulti annIns
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<*> IR.traverseMutationOutput f mutationOutput
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)
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where
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traverseMulti (IR.AnnIns objs tableName conflictClause checkCond columns defaultValues) = IR.AnnIns
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<$> traverse traverseObject objs
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<*> pure tableName
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<*> traverse (traverse f) conflictClause
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<*> ( (,)
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<$> traverseAnnBoolExp f (fst checkCond)
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<*> traverse (traverseAnnBoolExp f) (snd checkCond)
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)
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<*> pure columns
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<*> traverse f defaultValues
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traverseSingle (IR.AnnIns obj tableName conflictClause checkCond columns defaultValues) = IR.AnnIns
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<$> traverseObject obj
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<*> pure tableName
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<*> traverse (traverse f) conflictClause
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<*> ( (,)
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<$> traverseAnnBoolExp f (fst checkCond)
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<*> traverse (traverseAnnBoolExp f) (snd checkCond)
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)
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<*> pure columns
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<*> traverse f defaultValues
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traverseObject (IR.AnnInsObj columns objRels arrRels) = IR.AnnInsObj
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<$> traverse (traverse f) columns
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<*> traverse (traverseRel traverseSingle) objRels
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<*> traverse (traverseRel traverseMulti) arrRels
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traverseRel z (IR.RelIns object relInfo) = IR.RelIns <$> z object <*> pure relInfo
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convertToSQLTransaction
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:: (HasVersion, MonadTx m, MonadIO m, Tracing.MonadTrace m)
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=> Env.Environment
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-> IR.AnnInsert 'Postgres PG.SQLExp
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-> PGE.MutationRemoteJoinCtx
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-> Seq.Seq Q.PrepArg
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-> Bool
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-> m EncJSON
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convertToSQLTransaction env (IR.AnnInsert fieldName isSingle (annIns, mutationOutput)) remoteJoinCtx planVars stringifyNum =
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if null $ IR._aiInsObj annIns
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then pure $ IR.buildEmptyMutResp mutationOutput
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else withPaths ["selectionSet", fieldName, "args", suffix] $
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insertMultipleObjects env annIns [] remoteJoinCtx mutationOutput planVars stringifyNum
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where
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withPaths p x = foldr ($) x $ withPathK <$> p
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suffix = bool "objects" "object" isSingle
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insertMultipleObjects
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:: (HasVersion, MonadTx m, MonadIO m, Tracing.MonadTrace m)
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=> Env.Environment
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-> IR.MultiObjIns 'Postgres PG.SQLExp
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-> [(PGCol, PG.SQLExp)]
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-> PGE.MutationRemoteJoinCtx
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-> IR.MutationOutput 'Postgres
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-> Seq.Seq Q.PrepArg
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-> Bool
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-> m EncJSON
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insertMultipleObjects env multiObjIns additionalColumns remoteJoinCtx mutationOutput planVars stringifyNum =
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bool withoutRelsInsert withRelsInsert anyRelsToInsert
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where
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IR.AnnIns insObjs table conflictClause checkCondition columnInfos defVals = multiObjIns
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allInsObjRels = concatMap IR._aioObjRels insObjs
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allInsArrRels = concatMap IR._aioArrRels insObjs
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anyRelsToInsert = not $ null allInsArrRels && null allInsObjRels
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withoutRelsInsert = do
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indexedForM_ (IR._aioColumns <$> insObjs) \column ->
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validateInsert (map fst column) [] (map fst additionalColumns)
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let columnValues = map (mkSQLRow defVals) $ union additionalColumns . IR._aioColumns <$> insObjs
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columnNames = Map.keys defVals
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insertQuery = IR.InsertQueryP1
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table
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columnNames
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columnValues
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conflictClause
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checkCondition
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mutationOutput
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columnInfos
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rowCount = tshow . length $ IR._aiInsObj multiObjIns
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Tracing.trace ("Insert (" <> rowCount <> ") " <> qualifiedObjectToText table) do
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Tracing.attachMetadata [("count", rowCount)]
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PGE.execInsertQuery env stringifyNum (Just remoteJoinCtx) (insertQuery, planVars)
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withRelsInsert = do
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insertRequests <- indexedForM insObjs \obj -> do
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let singleObj = IR.AnnIns obj table conflictClause checkCondition columnInfos defVals
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insertObject env singleObj additionalColumns remoteJoinCtx planVars stringifyNum
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let affectedRows = sum $ map fst insertRequests
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columnValues = mapMaybe snd insertRequests
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selectExpr <- PGT.mkSelectExpFromColumnValues table columnInfos columnValues
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let (mutOutputRJ, remoteJoins) = PGE.getRemoteJoinsMutationOutput mutationOutput
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PGE.executeMutationOutputQuery env table columnInfos (Just affectedRows) (PGT.MCSelectValues selectExpr)
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mutOutputRJ stringifyNum [] $ (, remoteJoinCtx) <$> remoteJoins
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insertObject
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:: (HasVersion, MonadTx m, MonadIO m, Tracing.MonadTrace m)
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=> Env.Environment
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-> IR.SingleObjIns 'Postgres PG.SQLExp
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-> [(PGCol, PG.SQLExp)]
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-> PGE.MutationRemoteJoinCtx
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-> Seq.Seq Q.PrepArg
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-> Bool
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-> m (Int, Maybe (ColumnValues TxtEncodedPGVal))
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insertObject env singleObjIns additionalColumns remoteJoinCtx planVars stringifyNum = Tracing.trace ("Insert " <> qualifiedObjectToText table) do
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validateInsert (map fst columns) (map IR._riRelInfo objectRels) (map fst additionalColumns)
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-- insert all object relations and fetch this insert dependent column values
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objInsRes <- forM objectRels $ insertObjRel env planVars remoteJoinCtx stringifyNum
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-- prepare final insert columns
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let objRelAffRows = sum $ map fst objInsRes
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objRelDeterminedCols = concatMap snd objInsRes
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finalInsCols = columns <> objRelDeterminedCols <> additionalColumns
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cte <- mkInsertQ table onConflict finalInsCols defaultValues checkCond
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MutateResp affRows colVals <- liftTx $
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PGE.mutateAndFetchCols table allColumns (PGT.MCCheckConstraint cte, planVars) stringifyNum
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colValM <- asSingleObject colVals
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arrRelAffRows <- bool (withArrRels colValM) (return 0) $ null arrayRels
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let totAffRows = objRelAffRows + affRows + arrRelAffRows
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return (totAffRows, colValM)
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where
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IR.AnnIns annObj table onConflict checkCond allColumns defaultValues = singleObjIns
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IR.AnnInsObj columns objectRels arrayRels = annObj
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arrRelDepCols = flip getColInfos allColumns $
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concatMap (Map.keys . riMapping . IR._riRelInfo) arrayRels
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withArrRels colValM = do
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colVal <- onNothing colValM $ throw400 NotSupported cannotInsArrRelErr
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arrDepColsWithVal <- fetchFromColVals colVal arrRelDepCols
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arrInsARows <- forM arrayRels $ insertArrRel env arrDepColsWithVal remoteJoinCtx planVars stringifyNum
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return $ sum arrInsARows
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asSingleObject = \case
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[] -> pure Nothing
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[r] -> pure $ Just r
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_ -> throw500 "more than one row returned"
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cannotInsArrRelErr =
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"cannot proceed to insert array relations since insert to table "
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<> table <<> " affects zero rows"
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insertObjRel
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:: (HasVersion, MonadTx m, MonadIO m, Tracing.MonadTrace m)
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=> Env.Environment
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-> Seq.Seq Q.PrepArg
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-> PGE.MutationRemoteJoinCtx
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-> Bool
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-> IR.ObjRelIns 'Postgres PG.SQLExp
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-> m (Int, [(PGCol, PG.SQLExp)])
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insertObjRel env planVars remoteJoinCtx stringifyNum objRelIns =
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withPathK (relNameToTxt relName) $ do
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(affRows, colValM) <- withPathK "data" $ insertObject env singleObjIns [] remoteJoinCtx planVars stringifyNum
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colVal <- onNothing colValM $ throw400 NotSupported errMsg
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retColsWithVals <- fetchFromColVals colVal rColInfos
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let columns = flip mapMaybe (Map.toList mapCols) \(column, target) -> do
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value <- lookup target retColsWithVals
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Just (column, value)
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pure (affRows, columns)
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where
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IR.RelIns singleObjIns relInfo = objRelIns
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relName = riName relInfo
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table = riRTable relInfo
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mapCols = riMapping relInfo
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allCols = IR._aiTableCols singleObjIns
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rCols = Map.elems mapCols
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rColInfos = getColInfos rCols allCols
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errMsg = "cannot proceed to insert object relation "
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<> relName <<> " since insert to table "
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<> table <<> " affects zero rows"
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insertArrRel
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:: (HasVersion, MonadTx m, MonadIO m, Tracing.MonadTrace m)
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=> Env.Environment
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-> [(PGCol, PG.SQLExp)]
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-> PGE.MutationRemoteJoinCtx
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-> Seq.Seq Q.PrepArg
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-> Bool
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-> IR.ArrRelIns 'Postgres PG.SQLExp
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-> m Int
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insertArrRel env resCols remoteJoinCtx planVars stringifyNum arrRelIns =
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withPathK (relNameToTxt $ riName relInfo) $ do
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let additionalColumns = flip mapMaybe resCols \(column, value) -> do
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target <- Map.lookup column mapping
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Just (target, value)
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resBS <- withPathK "data" $
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insertMultipleObjects env multiObjIns additionalColumns remoteJoinCtx mutOutput planVars stringifyNum
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resObj <- decodeEncJSON resBS
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onNothing (Map.lookup ("affected_rows" :: Text) resObj) $
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throw500 "affected_rows not returned in array rel insert"
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where
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IR.RelIns multiObjIns relInfo = arrRelIns
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mapping = riMapping relInfo
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mutOutput = IR.MOutMultirowFields [("affected_rows", IR.MCount)]
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-- | validate an insert object based on insert columns,
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-- | insert object relations and additional columns from parent
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validateInsert
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:: (MonadError QErr m)
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=> [PGCol] -- ^ inserting columns
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-> [RelInfo 'Postgres] -- ^ object relation inserts
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-> [PGCol] -- ^ additional fields from parent
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-> m ()
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validateInsert insCols objRels addCols = do
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-- validate insertCols
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unless (null insConflictCols) $ throw400 ValidationFailed $
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"cannot insert " <> showPGCols insConflictCols
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<> " columns as their values are already being determined by parent insert"
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forM_ objRels $ \relInfo -> do
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let lCols = Map.keys $ riMapping relInfo
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relName = riName relInfo
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relNameTxt = relNameToTxt relName
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lColConflicts = lCols `intersect` (addCols <> insCols)
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withPathK relNameTxt $ unless (null lColConflicts) $ throw400 ValidationFailed $
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"cannot insert object relation ship " <> relName
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<<> " as " <> showPGCols lColConflicts
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<> " column values are already determined"
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where
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insConflictCols = insCols `intersect` addCols
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mkInsertQ
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:: MonadError QErr m
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=> QualifiedTable
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-> Maybe (IR.ConflictClauseP1 'Postgres PG.SQLExp)
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-> [(PGCol, PG.SQLExp)]
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-> Map.HashMap PGCol PG.SQLExp
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-> (AnnBoolExpSQL 'Postgres, Maybe (AnnBoolExpSQL 'Postgres))
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-> m PG.CTE
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mkInsertQ table onConflictM insCols defVals (insCheck, updCheck) = do
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let sqlConflict = PGT.toSQLConflict table <$> onConflictM
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sqlExps = mkSQLRow defVals insCols
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valueExp = PG.ValuesExp [PG.TupleExp sqlExps]
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tableCols = Map.keys defVals
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sqlInsert =
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PG.SQLInsert table tableCols valueExp sqlConflict
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. Just
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$ PG.RetExp
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[ PG.selectStar
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, PGT.insertOrUpdateCheckExpr table onConflictM
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(PGT.toSQLBoolExp (PG.QualTable table) insCheck)
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(fmap (PGT.toSQLBoolExp (PG.QualTable table)) updCheck)
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]
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pure $ PG.CTEInsert sqlInsert
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fetchFromColVals
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:: MonadError QErr m
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=> ColumnValues TxtEncodedPGVal
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-> [ColumnInfo 'Postgres]
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-> m [(PGCol, PG.SQLExp)]
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fetchFromColVals colVal reqCols =
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forM reqCols $ \ci -> do
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let valM = Map.lookup (pgiColumn ci) colVal
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val <- onNothing valM $ throw500 $ "column "
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<> pgiColumn ci <<> " not found in given colVal"
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let pgColVal = case val of
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TENull -> PG.SENull
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TELit t -> PG.SELit t
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return (pgiColumn ci, pgColVal)
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mkSQLRow :: Map.HashMap PGCol PG.SQLExp -> [(PGCol, PG.SQLExp)] -> [PG.SQLExp]
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mkSQLRow defVals withPGCol = map snd $
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flip map (Map.toList defVals) $
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\(col, defVal) -> (col,) $ fromMaybe defVal $ Map.lookup col withPGColMap
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where
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withPGColMap = Map.fromList withPGCol
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decodeEncJSON :: (J.FromJSON a, QErrM m) => EncJSON -> m a
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decodeEncJSON =
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either (throw500 . T.pack) decodeValue .
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J.eitherDecode . encJToLBS
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