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98 lines
4.1 KiB
Haskell
98 lines
4.1 KiB
Haskell
module Hasura.GraphQL.Execute.Query
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( convertQuerySelSet
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-- , queryOpFromPlan
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-- , ReusableQueryPlan
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, PreparedSql(..)
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, traverseQueryDB
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, parseGraphQLQuery
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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.HashMap.Strict.InsOrd as OMap
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import qualified Data.Sequence.NonEmpty as NESeq
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import qualified Language.GraphQL.Draft.Syntax as G
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import qualified Network.HTTP.Client as HTTP
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import qualified Network.HTTP.Types as HTTP
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import qualified Hasura.GraphQL.Transport.HTTP.Protocol as GH
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import qualified Hasura.Logging as L
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import qualified Hasura.SQL.AnyBackend as AB
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import Hasura.GraphQL.Context
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import Hasura.GraphQL.Execute.Action
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import Hasura.GraphQL.Execute.Backend
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import Hasura.GraphQL.Execute.Common
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import Hasura.GraphQL.Execute.Instances ()
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import Hasura.GraphQL.Execute.Remote
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import Hasura.GraphQL.Execute.Resolve
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import Hasura.GraphQL.Parser
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import Hasura.RQL.Types
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import Hasura.Server.Version (HasVersion)
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import Hasura.Session
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parseGraphQLQuery
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:: MonadError QErr m
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=> GQLContext
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-> [G.VariableDefinition]
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-> Maybe (HashMap G.Name J.Value)
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-> G.SelectionSet G.NoFragments G.Name
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-> m ( InsOrdHashMap G.Name (QueryRootField UnpreparedValue)
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, QueryReusability
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, G.SelectionSet G.NoFragments Variable
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)
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parseGraphQLQuery gqlContext varDefs varValsM fields = do
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resolvedSelSet <- resolveVariables varDefs (fromMaybe Map.empty varValsM) fields
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(parsedQuery, queryReusability) <- (gqlQueryParser gqlContext >>> (`onLeft` reportParseErrors)) resolvedSelSet
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pure (parsedQuery, queryReusability, resolvedSelSet)
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where
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reportParseErrors errs = case NESeq.head errs of
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-- TODO: Our error reporting machinery doesn’t currently support reporting
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-- multiple errors at once, so we’re throwing away all but the first one
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-- here. It would be nice to report all of them!
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ParseError{ pePath, peMessage, peCode } ->
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throwError (err400 peCode peMessage){ qePath = pePath }
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convertQuerySelSet
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:: forall m .
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( MonadError QErr m
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, HasVersion
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)
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=> Env.Environment
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-> L.Logger L.Hasura
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-> GQLContext
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-> UserInfo
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-> HTTP.Manager
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-> HTTP.RequestHeaders
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-> [G.Directive G.Name]
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-> G.SelectionSet G.NoFragments G.Name
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-> [G.VariableDefinition]
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-> Maybe GH.VariableValues
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-> m (ExecutionPlan, [QueryRootField UnpreparedValue], G.SelectionSet G.NoFragments Variable)
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convertQuerySelSet env logger gqlContext userInfo manager reqHeaders directives fields varDefs varValsM = do
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-- Parse the GraphQL query into the RQL AST
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(unpreparedQueries, _reusability, normalizedSelectionSet) <- parseGraphQLQuery gqlContext varDefs varValsM fields
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-- Transform the query plans into an execution plan
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let usrVars = _uiSession userInfo
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executionPlan <- for unpreparedQueries \case
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RFDB sourceName exists ->
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AB.dispatchAnyBackend @BackendExecute exists
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\(SourceConfigWith sourceConfig (QDBR db)) ->
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mkDBQueryPlan env manager reqHeaders userInfo directives sourceName sourceConfig db
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RFRemote rf -> do
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RemoteFieldG remoteSchemaInfo remoteField <- for rf $ resolveRemoteVariable userInfo
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pure $ buildExecStepRemote remoteSchemaInfo G.OperationTypeQuery [G.SelectionField remoteField]
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RFAction a ->
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pure $ ExecStepAction $ case a of
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AQQuery s -> AEPSync $ resolveActionExecution env logger userInfo s (ActionExecContext manager reqHeaders usrVars)
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AQAsync s -> AEPAsyncQuery $ AsyncActionQueryExecutionPlan (_aaaqActionId s) $ resolveAsyncActionQuery userInfo s
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RFRaw r ->
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pure $ ExecStepRaw r
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-- See Note [Temporarily disabling query plan caching]
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pure (executionPlan, OMap.elems unpreparedQueries, normalizedSelectionSet)
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