mirror of
https://github.com/hasura/graphql-engine.git
synced 2024-12-17 04:24:35 +03:00
342391f39d
This upgrades the version of Ormolu required by the HGE repository to v0.5.0.1, and reformats all code accordingly. Ormolu v0.5 reformats code that uses infix operators. This is mostly useful, adding newlines and indentation to make it clear which operators are applied first, but in some cases, it's unpleasant. To make this easier on the eyes, I had to do the following: * Add a few fixity declarations (search for `infix`) * Add parentheses to make precedence clear, allowing Ormolu to keep everything on one line * Rename `relevantEq` to `(==~)` in #6651 and set it to `infix 4` * Add a few _.ormolu_ files (thanks to @hallettj for helping me get started), mostly for Autodocodec operators that don't have explicit fixity declarations In general, I think these changes are quite reasonable. They mostly affect indentation. PR-URL: https://github.com/hasura/graphql-engine-mono/pull/6675 GitOrigin-RevId: cd47d87f1d089fb0bc9dcbbe7798dbceedcd7d83
428 lines
19 KiB
Haskell
428 lines
19 KiB
Haskell
module Hasura.GraphQL.Execute
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( EB.ExecutionStep (..),
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ResolvedExecutionPlan (..),
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ET.GraphQLQueryType (..),
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getResolvedExecPlan,
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makeGQLContext,
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execRemoteGQ,
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SubscriptionExecution (..),
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buildSubscriptionPlan,
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ExecutionCtx (..),
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EC.MonadGQLExecutionCheck (..),
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checkQueryInAllowlist,
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MultiplexedSubscriptionQueryPlan (..),
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SubscriptionQueryPlan (..),
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SourceSubscription (..),
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)
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where
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import Control.Monad.Trans.Control (MonadBaseControl)
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import Data.Aeson qualified as J
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import Data.Containers.ListUtils (nubOrd)
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import Data.Environment qualified as Env
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import Data.HashMap.Strict qualified as Map
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import Data.HashMap.Strict.InsOrd qualified as OMap
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import Data.HashSet qualified as HS
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import Data.Tagged qualified as Tagged
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import Hasura.Backends.Postgres.Execute.Types
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import Hasura.Base.Error
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import Hasura.EncJSON
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import Hasura.GraphQL.Context qualified as C
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import Hasura.GraphQL.Execute.Action qualified as EA
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import Hasura.GraphQL.Execute.Backend qualified as EB
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import Hasura.GraphQL.Execute.Common qualified as EC
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import Hasura.GraphQL.Execute.Mutation qualified as EM
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import Hasura.GraphQL.Execute.Query qualified as EQ
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import Hasura.GraphQL.Execute.RemoteJoin qualified as RJ
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import Hasura.GraphQL.Execute.Resolve qualified as ER
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import Hasura.GraphQL.Execute.Subscription.Plan qualified as ES
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import Hasura.GraphQL.Execute.Types qualified as ET
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import Hasura.GraphQL.Namespace
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import Hasura.GraphQL.ParameterizedQueryHash
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import Hasura.GraphQL.Parser.Directives
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import Hasura.GraphQL.RemoteServer (execRemoteGQ)
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import Hasura.GraphQL.Schema.Parser (runParse, toQErr)
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import Hasura.GraphQL.Transport.HTTP.Protocol
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import Hasura.Logging qualified as L
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import Hasura.Metadata.Class
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import Hasura.Prelude
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import Hasura.QueryTags
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import Hasura.RQL.IR qualified as IR
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import Hasura.RQL.Types.Action
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import Hasura.RQL.Types.Allowlist
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import Hasura.RQL.Types.Backend
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import Hasura.RQL.Types.Common
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import Hasura.RQL.Types.SchemaCache
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import Hasura.RQL.Types.Subscription
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import Hasura.SQL.AnyBackend qualified as AB
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import Hasura.SQL.Backend
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import Hasura.Server.Prometheus (PrometheusMetrics)
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import Hasura.Server.Types (ReadOnlyMode (..), RequestId (..))
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import Hasura.Session
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import Hasura.Tracing qualified as Tracing
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import Language.GraphQL.Draft.Syntax qualified as G
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import Network.HTTP.Client qualified as HTTP
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import Network.HTTP.Types qualified as HTTP
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-- | Execution context
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data ExecutionCtx = ExecutionCtx
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{ _ecxLogger :: L.Logger L.Hasura,
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_ecxSqlGenCtx :: SQLGenCtx,
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_ecxSchemaCache :: SchemaCache,
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_ecxSchemaCacheVer :: SchemaCacheVer,
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_ecxHttpManager :: HTTP.Manager,
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_ecxEnableAllowList :: Bool,
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_ecxReadOnlyMode :: ReadOnlyMode,
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_ecxPrometheusMetrics :: PrometheusMetrics
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}
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-- | Construct a single step of an execution plan.
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makeGQLContext ::
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UserInfo ->
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SchemaCache ->
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ET.GraphQLQueryType ->
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C.GQLContext
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makeGQLContext userInfo sc queryType =
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case Map.lookup role contextMap of
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Nothing -> defaultContext
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Just (C.RoleContext frontend backend) ->
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case _uiBackendOnlyFieldAccess userInfo of
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BOFAAllowed -> fromMaybe frontend backend
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BOFADisallowed -> frontend
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where
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role = _uiRole userInfo
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contextMap =
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case queryType of
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ET.QueryHasura -> scGQLContext sc
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ET.QueryRelay -> scRelayContext sc
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defaultContext =
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case queryType of
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ET.QueryHasura -> scUnauthenticatedGQLContext sc
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ET.QueryRelay -> scUnauthenticatedRelayContext sc
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-- The graphql query is resolved into a sequence of execution operations
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data ResolvedExecutionPlan
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= -- | query execution; remote schemas and introspection possible
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QueryExecutionPlan EB.ExecutionPlan [IR.QueryRootField IR.UnpreparedValue] DirectiveMap
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| -- | mutation execution; only __typename introspection supported
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MutationExecutionPlan EB.ExecutionPlan
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| -- | either action query or live query execution; remote schemas and introspection not supported
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SubscriptionExecutionPlan SubscriptionExecution
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newtype MultiplexedSubscriptionQueryPlan (b :: BackendType)
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= MultiplexedSubscriptionQueryPlan (ES.SubscriptionQueryPlan b (EB.MultiplexedQuery b))
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newtype SubscriptionQueryPlan = SubscriptionQueryPlan (AB.AnyBackend MultiplexedSubscriptionQueryPlan)
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data SourceSubscription
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= SSLivequery !(HashSet ActionId) !(ActionLogResponseMap -> ExceptT QErr IO (SourceName, SubscriptionQueryPlan))
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| SSStreaming !RootFieldAlias !(SourceName, SubscriptionQueryPlan)
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-- | The comprehensive subscription plan. We only support either
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-- 1. Fields with only async action queries with no associated relationships
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-- or
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-- 2. Source database query fields from same source and also can be mixed with async
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-- action query fields whose relationships are defined to tables in the source
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data SubscriptionExecution
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= SEAsyncActionsWithNoRelationships !(RootFieldMap (ActionId, ActionLogResponse -> Either QErr EncJSON))
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| SEOnSourceDB !SourceSubscription
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buildSubscriptionPlan ::
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forall m.
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(MonadError QErr m, EB.MonadQueryTags m, MonadIO m, MonadBaseControl IO m) =>
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UserInfo ->
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RootFieldMap (IR.QueryRootField IR.UnpreparedValue) ->
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ParameterizedQueryHash ->
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m SubscriptionExecution
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buildSubscriptionPlan userInfo rootFields parameterizedQueryHash = do
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((liveQueryOnSourceFields, noRelationActionFields), streamingFields) <- foldlM go ((mempty, mempty), mempty) (OMap.toList rootFields)
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if
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| null liveQueryOnSourceFields && null streamingFields ->
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pure $ SEAsyncActionsWithNoRelationships noRelationActionFields
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| null noRelationActionFields -> do
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if
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| null liveQueryOnSourceFields -> do
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case OMap.toList streamingFields of
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[] -> throw500 "empty selset for subscription"
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[(rootFieldName, (sourceName, exists))] -> do
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subscriptionPlan <- AB.dispatchAnyBackend @EB.BackendExecute
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exists
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\(IR.SourceConfigWith sourceConfig queryTagsConfig (IR.QDBR qdb) :: IR.SourceConfigWith db b) -> do
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let subscriptionQueryTagsAttributes = encodeQueryTags $ QTLiveQuery $ LivequeryMetadata rootFieldName parameterizedQueryHash
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queryTagsComment = Tagged.untag $ EB.createQueryTags @m subscriptionQueryTagsAttributes queryTagsConfig
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SubscriptionQueryPlan . AB.mkAnyBackend . MultiplexedSubscriptionQueryPlan
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<$> runReaderT
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( EB.mkDBStreamingSubscriptionPlan
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userInfo
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sourceName
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sourceConfig
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(rootFieldName, qdb)
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)
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queryTagsComment
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pure $
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SEOnSourceDB $
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SSStreaming rootFieldName $
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(sourceName, subscriptionPlan)
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_ -> throw400 NotSupported "exactly one root field is allowed for streaming subscriptions"
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| null streamingFields -> do
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let allActionIds = HS.fromList $ map fst $ lefts $ toList liveQueryOnSourceFields
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pure $
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SEOnSourceDB $
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SSLivequery allActionIds $ \actionLogMap -> do
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sourceSubFields <- for liveQueryOnSourceFields $ \case
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Right x -> pure x
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Left (actionId, (srcConfig, dbExecution)) -> do
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let sourceName = EA._aaqseSource dbExecution
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actionLogResponse <-
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Map.lookup actionId actionLogMap
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`onNothing` throw500 "unexpected: cannot lookup action_id in the map"
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let selectAST = EA._aaqseSelectBuilder dbExecution $ actionLogResponse
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queryDB = case EA._aaqseJsonAggSelect dbExecution of
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JASMultipleRows -> IR.QDBMultipleRows selectAST
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JASSingleObject -> IR.QDBSingleRow selectAST
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pure $ (sourceName, AB.mkAnyBackend $ IR.SourceConfigWith srcConfig Nothing (IR.QDBR queryDB))
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case OMap.toList sourceSubFields of
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[] -> throw500 "empty selset for subscription"
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((rootFieldName, sub) : _) -> buildAction sub sourceSubFields rootFieldName
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| otherwise -> throw400 NotSupported "streaming and livequery subscriptions cannot be executed in the same subscription"
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| otherwise ->
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throw400
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NotSupported
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"async action queries with no relationships aren't expected to mix with normal source database queries"
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where
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go ::
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( ( RootFieldMap
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( Either
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(ActionId, (PGSourceConfig, EA.AsyncActionQuerySourceExecution (IR.UnpreparedValue ('Postgres 'Vanilla))))
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(SourceName, AB.AnyBackend (IR.SourceConfigWith (IR.QueryDBRoot Void IR.UnpreparedValue)))
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),
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RootFieldMap (ActionId, ActionLogResponse -> Either QErr EncJSON)
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),
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RootFieldMap (SourceName, AB.AnyBackend (IR.SourceConfigWith (IR.QueryDBRoot Void IR.UnpreparedValue)))
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) ->
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(RootFieldAlias, IR.QueryRootField IR.UnpreparedValue) ->
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m
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( ( RootFieldMap
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( Either
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(ActionId, (PGSourceConfig, EA.AsyncActionQuerySourceExecution (IR.UnpreparedValue ('Postgres 'Vanilla))))
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(SourceName, AB.AnyBackend (IR.SourceConfigWith (IR.QueryDBRoot Void IR.UnpreparedValue)))
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),
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RootFieldMap (ActionId, ActionLogResponse -> Either QErr EncJSON)
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),
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RootFieldMap (SourceName, AB.AnyBackend (IR.SourceConfigWith (IR.QueryDBRoot Void IR.UnpreparedValue)))
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)
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go (accLiveQueryFields, accStreamingFields) (gName, field) = case field of
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IR.RFRemote _ -> throw400 NotSupported "subscription to remote server is not supported"
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IR.RFRaw _ -> throw400 NotSupported "Introspection not supported over subscriptions"
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IR.RFMulti _ -> throw400 NotSupported "not supported over subscriptions"
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IR.RFDB src e -> do
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let subscriptionType =
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case AB.unpackAnyBackend @('Postgres 'Vanilla) e of
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Just (IR.SourceConfigWith _ _ (IR.QDBR (IR.QDBStreamMultipleRows _))) -> Streaming
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_ -> LiveQuery
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newQDB <- AB.traverseBackend @EB.BackendExecute e \(IR.SourceConfigWith srcConfig queryTagsConfig (IR.QDBR qdb)) -> do
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let (newQDB, remoteJoins) = RJ.getRemoteJoinsQueryDB qdb
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unless (isNothing remoteJoins) $
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throw400 NotSupported "Remote relationships are not allowed in subscriptions"
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pure $ IR.SourceConfigWith srcConfig queryTagsConfig (IR.QDBR newQDB)
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case subscriptionType of
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Streaming -> pure (accLiveQueryFields, OMap.insert gName (src, newQDB) accStreamingFields)
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LiveQuery -> pure $ (first (OMap.insert gName (Right (src, newQDB))) accLiveQueryFields, accStreamingFields)
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IR.RFAction action -> do
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let (noRelsDBAST, remoteJoins) = RJ.getRemoteJoinsActionQuery action
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unless (isNothing remoteJoins) $
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throw400 NotSupported "Remote relationships are not allowed in subscriptions"
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case noRelsDBAST of
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IR.AQAsync q -> do
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let actionId = IR._aaaqActionId q
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case EA.resolveAsyncActionQuery userInfo q of
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EA.AAQENoRelationships respMaker ->
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pure $ (second (OMap.insert gName (actionId, respMaker)) accLiveQueryFields, accStreamingFields)
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EA.AAQEOnSourceDB srcConfig dbExecution ->
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pure $ (first (OMap.insert gName (Left (actionId, (srcConfig, dbExecution)))) accLiveQueryFields, accStreamingFields)
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IR.AQQuery _ -> throw400 NotSupported "query actions cannot be run as a subscription"
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buildAction ::
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(SourceName, AB.AnyBackend (IR.SourceConfigWith b)) ->
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RootFieldMap
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(SourceName, AB.AnyBackend (IR.SourceConfigWith (IR.QueryDBRoot Void IR.UnpreparedValue))) ->
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RootFieldAlias ->
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ExceptT QErr IO (SourceName, SubscriptionQueryPlan)
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buildAction (sourceName, exists) allFields rootFieldName = do
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subscriptionPlan <- AB.dispatchAnyBackend @EB.BackendExecute
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exists
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\(IR.SourceConfigWith sourceConfig queryTagsConfig _ :: IR.SourceConfigWith db b) -> do
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qdbs <- traverse (checkField @b sourceName) allFields
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let subscriptionQueryTagsAttributes = encodeQueryTags $ QTLiveQuery $ LivequeryMetadata rootFieldName parameterizedQueryHash
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let queryTagsComment = Tagged.untag $ EB.createQueryTags @m subscriptionQueryTagsAttributes queryTagsConfig
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SubscriptionQueryPlan . AB.mkAnyBackend . MultiplexedSubscriptionQueryPlan
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<$> runReaderT (EB.mkLiveQuerySubscriptionPlan userInfo sourceName sourceConfig (_rfaNamespace rootFieldName) qdbs) queryTagsComment
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pure (sourceName, subscriptionPlan)
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checkField ::
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forall b m1.
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(Backend b, MonadError QErr m1) =>
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SourceName ->
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(SourceName, AB.AnyBackend (IR.SourceConfigWith (IR.QueryDBRoot Void IR.UnpreparedValue))) ->
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m1 (IR.QueryDB b Void (IR.UnpreparedValue b))
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checkField sourceName (src, exists)
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| sourceName /= src = throw400 NotSupported "all fields of a subscription must be from the same source"
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| otherwise = case AB.unpackAnyBackend exists of
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Nothing -> throw500 "internal error: two sources share the same name but are tied to different backends"
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Just (IR.SourceConfigWith _ _ (IR.QDBR qdb)) -> pure qdb
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checkQueryInAllowlist ::
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(MonadError QErr m) =>
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Bool ->
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AllowlistMode ->
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UserInfo ->
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GQLReqParsed ->
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SchemaCache ->
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m ()
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checkQueryInAllowlist allowlistEnabled allowlistMode userInfo req schemaCache =
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-- only for non-admin roles
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-- check if query is in allowlist
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when (allowlistEnabled && role /= adminRoleName) do
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let query = G.ExecutableDocument . unGQLExecDoc $ _grQuery req
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allowlist = scAllowlist schemaCache
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allowed = allowlistAllowsQuery allowlist allowlistMode role query
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unless allowed $
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modifyQErr modErr $
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throw400 ValidationFailed "query is not allowed"
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where
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role = _uiRole userInfo
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modErr e =
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let msg = "query is not in any of the allowlists"
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in e {qeInternal = Just $ ExtraInternal $ J.object ["message" J..= J.String msg]}
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-- | Construct a 'ResolvedExecutionPlan' from a 'GQLReqParsed' and a
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-- bunch of metadata.
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{-# INLINEABLE getResolvedExecPlan #-}
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getResolvedExecPlan ::
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forall m.
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( MonadError QErr m,
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MonadMetadataStorage (MetadataStorageT m),
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MonadIO m,
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MonadBaseControl IO m,
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Tracing.MonadTrace m,
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EC.MonadGQLExecutionCheck m,
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EB.MonadQueryTags m
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) =>
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Env.Environment ->
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L.Logger L.Hasura ->
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UserInfo ->
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SQLGenCtx ->
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ReadOnlyMode ->
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SchemaCache ->
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SchemaCacheVer ->
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ET.GraphQLQueryType ->
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HTTP.Manager ->
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[HTTP.Header] ->
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GQLReqUnparsed ->
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SingleOperation -> -- the first step of the execution plan
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Maybe G.Name ->
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RequestId ->
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m (ParameterizedQueryHash, ResolvedExecutionPlan)
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getResolvedExecPlan
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env
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logger
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userInfo
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sqlGenCtx
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readOnlyMode
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sc
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_scVer
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queryType
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httpManager
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reqHeaders
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reqUnparsed
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queryParts -- the first step of the execution plan
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maybeOperationName
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reqId = do
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let gCtx = makeGQLContext userInfo sc queryType
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-- Construct the full 'ResolvedExecutionPlan' from the 'queryParts :: SingleOperation'.
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(parameterizedQueryHash, resolvedExecPlan) <-
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case queryParts of
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G.TypedOperationDefinition G.OperationTypeQuery _ varDefs directives inlinedSelSet -> do
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(executionPlan, queryRootFields, dirMap, parameterizedQueryHash) <-
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EQ.convertQuerySelSet
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env
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logger
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gCtx
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userInfo
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httpManager
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reqHeaders
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directives
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inlinedSelSet
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varDefs
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reqUnparsed
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(scSetGraphqlIntrospectionOptions sc)
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reqId
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maybeOperationName
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pure (parameterizedQueryHash, QueryExecutionPlan executionPlan queryRootFields dirMap)
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G.TypedOperationDefinition G.OperationTypeMutation _ varDefs directives inlinedSelSet -> do
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when (readOnlyMode == ReadOnlyModeEnabled) $
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throw400 NotSupported "Mutations are not allowed when read-only mode is enabled"
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(executionPlan, parameterizedQueryHash) <-
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EM.convertMutationSelectionSet
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env
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logger
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gCtx
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sqlGenCtx
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userInfo
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httpManager
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reqHeaders
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directives
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inlinedSelSet
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varDefs
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reqUnparsed
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(scSetGraphqlIntrospectionOptions sc)
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reqId
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maybeOperationName
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pure (parameterizedQueryHash, MutationExecutionPlan executionPlan)
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G.TypedOperationDefinition G.OperationTypeSubscription _ varDefs directives inlinedSelSet -> do
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(normalizedDirectives, normalizedSelectionSet) <-
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ER.resolveVariables
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varDefs
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(fromMaybe mempty (_grVariables reqUnparsed))
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directives
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inlinedSelSet
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subscriptionParser <- C.gqlSubscriptionParser gCtx `onNothing` throw400 ValidationFailed "no subscriptions exist"
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unpreparedAST <- liftEither $ subscriptionParser normalizedSelectionSet
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let parameterizedQueryHash = calculateParameterizedQueryHash normalizedSelectionSet
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-- Process directives on the subscription
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dirMap <-
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toQErr $ runParse (parseDirectives customDirectives (G.DLExecutable G.EDLSUBSCRIPTION) normalizedDirectives)
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-- A subscription should have exactly one root field.
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-- However, for testing purposes, we may allow several root fields; we check for this by
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-- looking for directive "_multiple_top_level_fields" on the subscription. THIS IS NOT A
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-- SUPPORTED FEATURE. We might remove it in the future without warning. DO NOT USE THIS.
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allowMultipleRootFields <- withDirective dirMap multipleRootFields $ pure . isJust
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case inlinedSelSet of
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[] -> throw500 "empty selset for subscription"
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[_] -> pure ()
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_ ->
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unless (allowMultipleRootFields && isSingleNamespace unpreparedAST) $
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throw400 ValidationFailed "subscriptions must select one top level field"
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subscriptionPlan <- buildSubscriptionPlan userInfo unpreparedAST parameterizedQueryHash
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pure (parameterizedQueryHash, SubscriptionExecutionPlan subscriptionPlan)
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-- the parameterized query hash is calculated here because it is used in multiple
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-- places and instead of calculating it separately, this is a common place to calculate
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-- the parameterized query hash and then thread it to the required places
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pure $ (parameterizedQueryHash, resolvedExecPlan)
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-- | Even when directive _multiple_top_level_fields is given, we can't allow
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-- fields within differently-aliased namespaces.
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-- This is because the namespace is added to the result by wrapping
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-- the bytestring response we get back from the DB.
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isSingleNamespace :: RootFieldMap a -> Bool
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isSingleNamespace fieldMap =
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case nubOrd (_rfaNamespace <$> OMap.keys fieldMap) of
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[_] -> True
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_ -> False
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