graphql-engine/server/src-lib/Hasura/GraphQL/Context.hs
Vamshi Surabhi b84db36ebb
allow custom mutations through actions (#3042)
* basic doc for actions

* custom_types, sync and async actions

* switch to graphql-parser-hs on github

* update docs

* metadata import/export

* webhook calls are now supported

* relationships in sync actions

* initialise.sql is now in sync with the migration file

* fix metadata tests

* allow specifying arguments of actions

* fix blacklist check on check_build_worthiness job

* track custom_types and actions related tables

* handlers are now triggered on async actions

* default to pgjson unless a field is involved in relationships, for generating definition list

* use 'true' for action filter for non admin role

* fix create_action_permission sql query

* drop permissions when dropping an action

* add a hdb_role view (and relationships) to fetch all roles in the system

* rename 'webhook' key in action definition to 'handler'

* allow templating actions wehook URLs with env vars

* add 'update_action' /v1/query type

* allow forwarding client headers by setting `forward_client_headers` in action definition

* add 'headers' configuration in action definition

* handle webhook error response based on status codes

* support array relationships for custom types

* implement single row mutation, see https://github.com/hasura/graphql-engine/issues/3731

* single row mutation: rename 'pk_columns' -> 'columns' and no-op refactor

* use top level primary key inputs for delete_by_pk & account select permissions for single row mutations

* use only REST semantics to resolve the webhook response

* use 'pk_columns' instead of 'columns' for update_by_pk input

* add python basic tests for single row mutations

* add action context (name) in webhook payload

* Async action response is accessible for non admin roles only if
  the request session vars equals to action's

* clean nulls, empty arrays for actions, custom types in export metadata

* async action mutation returns only the UUID of the action

* unit tests for URL template parser

* Basic sync actions python tests

* fix output in async query & add async tests

* add admin secret header in async actions python test

* document async action architecture in Resolve/Action.hs file

* support actions returning array of objects

* tests for list type response actions

* update docs with actions and custom types metadata API reference

* update actions python tests as per #f8e1330

Co-authored-by: Tirumarai Selvan <tirumarai.selvan@gmail.com>
Co-authored-by: Aravind Shankar <face11301@gmail.com>
Co-authored-by: Rakesh Emmadi <12475069+rakeshkky@users.noreply.github.com>
2020-02-13 23:08:23 +05:30

77 lines
2.5 KiB
Haskell

module Hasura.GraphQL.Context where
import Hasura.Prelude
import Data.Aeson
import Data.Has
import qualified Data.HashMap.Strict as Map
import qualified Data.HashSet as Set
import qualified Language.GraphQL.Draft.Syntax as G
import Hasura.GraphQL.Resolve.Types
import Hasura.GraphQL.Validate.Types
import Hasura.RQL.Instances ()
import Hasura.RQL.Types.Permission
-- | A /GraphQL context/, aka the final output of GraphQL schema generation. Used to both validate
-- incoming queries and respond to introspection queries.
--
-- Combines information from 'TyAgg', 'RootFields', and 'InsCtxMap' datatypes and adds a bit more on
-- top. Constructed via the 'mkGCtx' smart constructor.
data GCtx
= GCtx
-- GraphQL type information
{ _gTypes :: !TypeMap
, _gFields :: !FieldMap
, _gQueryRoot :: !ObjTyInfo
, _gMutRoot :: !(Maybe ObjTyInfo)
, _gSubRoot :: !(Maybe ObjTyInfo)
-- Postgres type information
, _gOrdByCtx :: !OrdByCtx
, _gQueryCtxMap :: !QueryCtxMap
, _gMutationCtxMap :: !MutationCtxMap
, _gInsCtxMap :: !InsCtxMap
} deriving (Show, Eq)
data RemoteGCtx
= RemoteGCtx
{ _rgTypes :: !TypeMap
, _rgQueryRoot :: !ObjTyInfo
, _rgMutationRoot :: !(Maybe ObjTyInfo)
, _rgSubscriptionRoot :: !(Maybe ObjTyInfo)
} deriving (Show, Eq)
instance Has TypeMap GCtx where
getter = _gTypes
modifier f ctx = ctx { _gTypes = f $ _gTypes ctx }
instance ToJSON GCtx where
toJSON _ = String "ToJSON for GCtx is not implemented"
type GCtxMap = Map.HashMap RoleName GCtx
mkQueryRootTyInfo :: [ObjFldInfo] -> ObjTyInfo
mkQueryRootTyInfo flds =
mkHsraObjTyInfo (Just "query root")
(G.NamedType "query_root") Set.empty $
mapFromL _fiName $ schemaFld:typeFld:flds
where
schemaFld = mkHsraObjFldInfo Nothing "__schema" Map.empty $
G.toGT $ G.toNT $ G.NamedType "__Schema"
typeFld = mkHsraObjFldInfo Nothing "__type" typeFldArgs $
G.toGT $ G.NamedType "__Type"
typeFldArgs = mapFromL _iviName $ pure $
InpValInfo (Just "name of the type") "name" Nothing
$ G.toGT $ G.toNT $ G.NamedType "String"
defaultTypes :: [TypeInfo]
defaultTypes = $(fromSchemaDocQ defaultSchema TLHasuraType)
emptyGCtx :: GCtx
emptyGCtx =
let queryRoot = mkQueryRootTyInfo []
allTys = mkTyInfoMap $ TIObj queryRoot:defaultTypes
-- for now subscription root is query root
in GCtx allTys mempty queryRoot Nothing Nothing mempty mempty mempty mempty