mirror of
https://github.com/hasura/graphql-engine.git
synced 2024-12-24 07:52:14 +03:00
512a4dbb92
### Description This PR changes all the schema code to operate in a specific `SchemaT` monad, rather than in an arbitrary `m` monad. `SchemaT` is intended to be used opaquely with `runSourceSchema` and `runRemoteSchema`. The main goal of this is to allow a different reader context per part of the schema: this PR also minimizes the contexts. This means that we no longer require `SchemaOptions` when building remote schemas' schema, and this PR therefore removes a lot of dummy / placeholder values accordingly. ### Performance and stacking This PR has been through several iterations. #5339 was the original version, that accomplished the same thing by stacking readers on top of the stack at every remote relationship boundary. This raised performance concerns, and @0x777 confirmed with an ad-hoc test that in some extreme cases we could see up to a 10% performance impact. This version, while more verbose, allows us to unstack / re-stack the readers, and avoid that problem. #5517 adds a new benchmark set to be able to automatically measure this on every PR. ### Remaining work - [x] a comment (or perhaps even a Note?) should be added to `SchemaT` - [x] we probably want for #5517 to be merged first so that we can confirm the lack of performance penalty PR-URL: https://github.com/hasura/graphql-engine-mono/pull/5458 GitOrigin-RevId: e06b83d90da475f745b838f1fd8f8b4d9d3f4b10
250 lines
11 KiB
Haskell
250 lines
11 KiB
Haskell
{-# LANGUAGE TemplateHaskell #-}
|
|
{-# OPTIONS_GHC -fno-warn-orphans #-}
|
|
|
|
module Hasura.Backends.DataConnector.Adapter.Schema () where
|
|
|
|
--------------------------------------------------------------------------------
|
|
|
|
import Control.Lens ((^.))
|
|
import Data.Aeson qualified as J
|
|
import Data.Has
|
|
import Data.List.NonEmpty qualified as NE
|
|
import Data.Text.Casing (GQLNameIdentifier, fromCustomName)
|
|
import Data.Text.Extended ((<<>))
|
|
import Data.Text.NonEmpty qualified as NET
|
|
import Hasura.Backends.DataConnector.API.V0.Capabilities (lookupComparisonInputObjectDefinition)
|
|
import Hasura.Backends.DataConnector.Adapter.Backend (CustomBooleanOperator (..))
|
|
import Hasura.Backends.DataConnector.Adapter.Types qualified as Adapter
|
|
import Hasura.Backends.DataConnector.IR.Aggregate qualified as IR.A
|
|
import Hasura.Backends.DataConnector.IR.Column qualified as IR.C
|
|
import Hasura.Backends.DataConnector.IR.OrderBy qualified as IR.O
|
|
import Hasura.Backends.DataConnector.IR.Scalar.Type qualified as IR.S.T
|
|
import Hasura.Backends.DataConnector.IR.Scalar.Value qualified as IR.S.V
|
|
import Hasura.Base.Error
|
|
import Hasura.GraphQL.Parser.Class
|
|
import Hasura.GraphQL.Schema.Backend (BackendSchema (..), BackendTableSelectSchema (..), ComparisonExp, MonadBuildSchema)
|
|
import Hasura.GraphQL.Schema.BoolExp qualified as GS.BE
|
|
import Hasura.GraphQL.Schema.Build qualified as GS.B
|
|
import Hasura.GraphQL.Schema.Common qualified as GS.C
|
|
import Hasura.GraphQL.Schema.NamingCase
|
|
import Hasura.GraphQL.Schema.Options qualified as Options
|
|
import Hasura.GraphQL.Schema.Parser qualified as P
|
|
import Hasura.GraphQL.Schema.Select qualified as GS.S
|
|
import Hasura.Name qualified as Name
|
|
import Hasura.Prelude
|
|
import Hasura.RQL.IR.BoolExp qualified as IR
|
|
import Hasura.RQL.IR.Select qualified as IR
|
|
import Hasura.RQL.IR.Value qualified as IR
|
|
import Hasura.RQL.Types.Backend qualified as RQL
|
|
import Hasura.RQL.Types.Column qualified as RQL
|
|
import Hasura.RQL.Types.Source qualified as RQL
|
|
import Hasura.RQL.Types.SourceCustomization qualified as RQL
|
|
import Hasura.RQL.Types.Table qualified as RQL
|
|
import Hasura.SQL.Backend (BackendType (..))
|
|
import Language.GraphQL.Draft.Syntax qualified as GQL
|
|
|
|
--------------------------------------------------------------------------------
|
|
|
|
instance BackendSchema 'DataConnector where
|
|
-- top level parsers
|
|
buildTableQueryAndSubscriptionFields = GS.B.buildTableQueryAndSubscriptionFields
|
|
|
|
buildTableRelayQueryFields = experimentalBuildTableRelayQueryFields
|
|
|
|
buildFunctionQueryFields _ _ _ _ _ = pure []
|
|
buildFunctionRelayQueryFields _ _ _ _ _ _ = pure []
|
|
buildFunctionMutationFields _ _ _ _ _ = pure []
|
|
buildTableInsertMutationFields _ _ _ _ _ _ = pure []
|
|
buildTableUpdateMutationFields _ _ _ _ _ _ = pure []
|
|
buildTableDeleteMutationFields _ _ _ _ _ _ = pure []
|
|
buildTableStreamingSubscriptionFields _ _ _ _ _ = pure []
|
|
|
|
-- backend extensions
|
|
relayExtension = Nothing
|
|
nodesAggExtension = Just ()
|
|
streamSubscriptionExtension = Nothing
|
|
|
|
-- individual components
|
|
columnParser = columnParser'
|
|
scalarSelectionArgumentsParser _ = pure Nothing
|
|
orderByOperators = orderByOperators'
|
|
comparisonExps = comparisonExps'
|
|
|
|
countTypeInput = countTypeInput'
|
|
aggregateOrderByCountType = IR.S.T.Number
|
|
computedField =
|
|
error "computedField: not implemented for the Data Connector backend."
|
|
|
|
instance BackendTableSelectSchema 'DataConnector where
|
|
tableArguments = tableArgs'
|
|
selectTable = GS.S.defaultSelectTable
|
|
selectTableAggregate = GS.S.defaultSelectTableAggregate
|
|
tableSelectionSet = GS.S.defaultTableSelectionSet
|
|
|
|
--------------------------------------------------------------------------------
|
|
|
|
experimentalBuildTableRelayQueryFields ::
|
|
MonadBuildSchema 'DataConnector r m n =>
|
|
RQL.MkRootFieldName ->
|
|
RQL.SourceInfo 'DataConnector ->
|
|
RQL.TableName 'DataConnector ->
|
|
RQL.TableInfo 'DataConnector ->
|
|
GQLNameIdentifier ->
|
|
NESeq (RQL.ColumnInfo 'DataConnector) ->
|
|
GS.C.SchemaT r m [P.FieldParser n a]
|
|
experimentalBuildTableRelayQueryFields _mkRootFieldName _sourceName _tableName _tableInfo _gqlName _pkeyColumns =
|
|
pure []
|
|
|
|
columnParser' ::
|
|
(MonadParse n, MonadError QErr m) =>
|
|
RQL.ColumnType 'DataConnector ->
|
|
GQL.Nullability ->
|
|
GS.C.SchemaT r m (P.Parser 'P.Both n (IR.ValueWithOrigin (RQL.ColumnValue 'DataConnector)))
|
|
columnParser' columnType (GQL.Nullability isNullable) = do
|
|
parser <- case columnType of
|
|
RQL.ColumnScalar IR.S.T.String -> pure (J.String <$> P.string)
|
|
RQL.ColumnScalar IR.S.T.Number -> pure (J.Number <$> P.scientific)
|
|
RQL.ColumnScalar IR.S.T.Bool -> pure (J.Bool <$> P.boolean)
|
|
RQL.ColumnScalar (IR.S.T.Custom name) -> do
|
|
gqlName <-
|
|
GQL.mkName name
|
|
`onNothing` throw400 ValidationFailed ("The column type name " <> name <<> " is not a valid GraphQL name")
|
|
pure $ P.jsonScalar gqlName (Just "A custom scalar type")
|
|
RQL.ColumnEnumReference {} ->
|
|
throw400 NotSupported "Enum column type is unsupported by the Data Connector backend"
|
|
pure . GS.C.peelWithOrigin . fmap (RQL.ColumnValue columnType) . possiblyNullable $ parser
|
|
where
|
|
possiblyNullable ::
|
|
MonadParse m =>
|
|
P.Parser 'P.Both m J.Value ->
|
|
P.Parser 'P.Both m J.Value
|
|
possiblyNullable
|
|
| isNullable = fmap (fromMaybe J.Null) . P.nullable
|
|
| otherwise = id
|
|
|
|
orderByOperators' :: RQL.SourceInfo 'DataConnector -> NamingCase -> (GQL.Name, NonEmpty (P.Definition P.EnumValueInfo, (RQL.BasicOrderType 'DataConnector, RQL.NullsOrderType 'DataConnector)))
|
|
orderByOperators' RQL.SourceInfo {_siConfiguration} _tCase =
|
|
let dcName = Adapter._scDataConnectorName _siConfiguration
|
|
orderBy = fromMaybe Name._order_by $ GQL.mkName $ NET.unNonEmptyText (Adapter.unDataConnectorName dcName) <> "_order_by"
|
|
in (orderBy,) $
|
|
-- NOTE: NamingCase is not being used here as we don't support naming conventions for this DB
|
|
NE.fromList
|
|
[ ( define $$(GQL.litName "asc") "in ascending order",
|
|
(IR.O.Ascending, ())
|
|
),
|
|
( define $$(GQL.litName "desc") "in descending order",
|
|
(IR.O.Descending, ())
|
|
)
|
|
]
|
|
where
|
|
define name desc = P.Definition name (Just desc) Nothing [] P.EnumValueInfo
|
|
|
|
comparisonExps' ::
|
|
forall m n r.
|
|
MonadBuildSchema 'DataConnector r m n =>
|
|
RQL.SourceInfo 'DataConnector ->
|
|
RQL.ColumnType 'DataConnector ->
|
|
GS.C.SchemaT r m (P.Parser 'P.Input n [ComparisonExp 'DataConnector])
|
|
comparisonExps' sourceInfo columnType = P.memoizeOn 'comparisonExps' (dataConnectorName, columnType) $ do
|
|
tCase <- asks getter
|
|
collapseIfNull <- GS.C.retrieve Options.soDangerousBooleanCollapse
|
|
|
|
typedParser <- columnParser' columnType (GQL.Nullability False)
|
|
let name = P.getName typedParser <> $$(GQL.litName "_Dynamic_comparison_exp")
|
|
desc =
|
|
GQL.Description $
|
|
"Boolean expression to compare columns of type "
|
|
<> P.getName typedParser
|
|
<<> ". All fields are combined with logical 'AND'."
|
|
columnListParser = fmap IR.openValueOrigin <$> P.list typedParser
|
|
customOperators <- (fmap . fmap . fmap) IR.ABackendSpecific <$> mkCustomOperators tCase collapseIfNull (P.getName typedParser)
|
|
pure $
|
|
P.object name (Just desc) $
|
|
fmap catMaybes $
|
|
sequenceA $
|
|
concat
|
|
[ GS.BE.equalityOperators
|
|
tCase
|
|
collapseIfNull
|
|
(IR.mkParameter <$> typedParser)
|
|
(mkListLiteral <$> columnListParser),
|
|
GS.BE.comparisonOperators
|
|
tCase
|
|
collapseIfNull
|
|
(IR.mkParameter <$> typedParser),
|
|
customOperators
|
|
]
|
|
where
|
|
dataConnectorName = sourceInfo ^. RQL.siConfiguration . Adapter.scDataConnectorName
|
|
|
|
mkListLiteral :: [RQL.ColumnValue 'DataConnector] -> IR.UnpreparedValue 'DataConnector
|
|
mkListLiteral columnValues =
|
|
IR.UVLiteral . IR.S.V.ArrayLiteral $ RQL.cvValue <$> columnValues
|
|
|
|
mkCustomOperators ::
|
|
NamingCase ->
|
|
Options.DangerouslyCollapseBooleans ->
|
|
GQL.Name ->
|
|
GS.C.SchemaT r m [P.InputFieldsParser n (Maybe (CustomBooleanOperator (IR.UnpreparedValue 'DataConnector)))]
|
|
mkCustomOperators tCase collapseIfNull typeName = do
|
|
let capabilities = sourceInfo ^. RQL.siConfiguration . Adapter.scCapabilities
|
|
case lookupComparisonInputObjectDefinition capabilities typeName of
|
|
Nothing -> pure []
|
|
Just GQL.InputObjectTypeDefinition {..} -> do
|
|
traverse (mkCustomOperator tCase collapseIfNull) _iotdValueDefinitions
|
|
|
|
mkCustomOperator ::
|
|
NamingCase ->
|
|
Options.DangerouslyCollapseBooleans ->
|
|
GQL.InputValueDefinition ->
|
|
GS.C.SchemaT r m (P.InputFieldsParser n (Maybe (CustomBooleanOperator (IR.UnpreparedValue 'DataConnector))))
|
|
mkCustomOperator tCase collapseIfNull GQL.InputValueDefinition {..} = do
|
|
argParser <- mkArgParser _ivdType
|
|
pure $
|
|
GS.BE.mkBoolOperator tCase collapseIfNull (fromCustomName _ivdName) _ivdDescription $
|
|
CustomBooleanOperator (GQL.unName _ivdName) . Just . Right <$> argParser
|
|
|
|
mkArgParser :: GQL.GType -> GS.C.SchemaT r m (P.Parser 'P.Both n (IR.UnpreparedValue 'DataConnector))
|
|
mkArgParser argType =
|
|
fmap IR.mkParameter
|
|
<$> columnParser'
|
|
(RQL.ColumnScalar $ IR.S.T.fromGQLType $ GQL.getBaseType argType)
|
|
(GQL.Nullability $ GQL.isNotNull argType)
|
|
|
|
tableArgs' ::
|
|
forall r m n.
|
|
MonadBuildSchema 'DataConnector r m n =>
|
|
RQL.SourceInfo 'DataConnector ->
|
|
RQL.TableInfo 'DataConnector ->
|
|
GS.C.SchemaT r m (P.InputFieldsParser n (IR.SelectArgsG 'DataConnector (IR.UnpreparedValue 'DataConnector)))
|
|
tableArgs' sourceName tableInfo = do
|
|
whereParser <- GS.S.tableWhereArg sourceName tableInfo
|
|
orderByParser <- GS.S.tableOrderByArg sourceName tableInfo
|
|
let mkSelectArgs whereArg orderByArg limitArg offsetArg =
|
|
IR.SelectArgs
|
|
{ _saWhere = whereArg,
|
|
_saOrderBy = orderByArg,
|
|
_saLimit = limitArg,
|
|
_saOffset = offsetArg,
|
|
_saDistinct = Nothing
|
|
}
|
|
pure $
|
|
mkSelectArgs
|
|
<$> whereParser
|
|
<*> orderByParser
|
|
<*> GS.S.tableLimitArg
|
|
<*> GS.S.tableOffsetArg
|
|
|
|
countTypeInput' ::
|
|
MonadParse n =>
|
|
Maybe (P.Parser 'P.Both n IR.C.Name) ->
|
|
P.InputFieldsParser n (IR.CountDistinct -> IR.A.CountAggregate)
|
|
countTypeInput' = \case
|
|
Just columnEnum -> mkCountAggregate <$> P.fieldOptional Name._column Nothing columnEnum
|
|
Nothing -> pure $ mkCountAggregate Nothing
|
|
where
|
|
mkCountAggregate :: Maybe IR.C.Name -> IR.CountDistinct -> IR.A.CountAggregate
|
|
mkCountAggregate Nothing _ = IR.A.StarCount
|
|
mkCountAggregate (Just column) IR.SelectCountDistinct = IR.A.ColumnDistinctCount column
|
|
mkCountAggregate (Just column) IR.SelectCountNonDistinct = IR.A.ColumnCount column
|