graphql-engine/server/src-lib/Hasura/GraphQL/Execute/LiveQuery/Options.hs
Lyndon Maydwell 24592a516b
Pass environment variables around as a data structure, via @sordina (#5374)
* Pass environment variables around as a data structure, via @sordina

* Resolving build error

* Adding Environment passing note to changelog

* Removing references to ILTPollerLog as this seems to have been reintroduced from a bad merge

* removing commented-out imports

* Language pragmas already set by project

* Linking async thread

* Apply suggestions from code review

Use `runQueryTx` instead of `runLazyTx` for queries.

* remove the non-user facing entry in the changelog

Co-authored-by: Phil Freeman <paf31@cantab.net>
Co-authored-by: Phil Freeman <phil@hasura.io>
Co-authored-by: Vamshi Surabhi <0x777@users.noreply.github.com>
2020-07-14 12:00:58 -07:00

42 lines
1.4 KiB
Haskell

module Hasura.GraphQL.Execute.LiveQuery.Options
( LiveQueriesOptions(..)
, BatchSize(..)
, RefetchInterval(..)
, mkLiveQueriesOptions
) where
import Hasura.Prelude
import qualified Data.Aeson as J
data LiveQueriesOptions
= LiveQueriesOptions
{ _lqoBatchSize :: !BatchSize
, _lqoRefetchInterval :: !RefetchInterval
} deriving (Show, Eq)
mkLiveQueriesOptions :: Maybe BatchSize -> Maybe RefetchInterval -> LiveQueriesOptions
mkLiveQueriesOptions batchSize refetchInterval = LiveQueriesOptions
{ _lqoBatchSize = fromMaybe (BatchSize 100) batchSize
, _lqoRefetchInterval = fromMaybe (RefetchInterval 1) refetchInterval
}
instance J.ToJSON LiveQueriesOptions where
toJSON (LiveQueriesOptions batchSize refetchInterval) =
J.object [ "batch_size" J..= batchSize
, "refetch_delay" J..= refetchInterval
]
instance J.FromJSON LiveQueriesOptions where
parseJSON = J.withObject "live query options" \o ->
LiveQueriesOptions <$> o J..: "batch_size"
<*> o J..: "refetch_delay"
newtype BatchSize = BatchSize { unBatchSize :: Int }
deriving (Show, Eq, J.ToJSON, J.FromJSON)
-- TODO this is treated as milliseconds in fromEnv and as seconds in ToJSON.
-- ideally this would have e.g. ... unRefetchInterval :: Milliseconds
newtype RefetchInterval = RefetchInterval { unRefetchInterval :: DiffTime }
deriving (Show, Eq, J.ToJSON, J.FromJSON)