module LaunchDarkly.Server.Network.Polling (pollingThread) where

import           GHC.Generics                            (Generic)
import           Data.Text                               (Text)
import qualified Data.Text as                            T
import           Network.HTTP.Client                     (Manager, Request(..), Response(..), httpLbs)
import           Data.Generics.Product                   (getField)
import           Control.Monad                           (forever)
import           Control.Concurrent                      (threadDelay)
import           Data.Aeson                              (eitherDecode, FromJSON(..))
import           Control.Monad.Logger                    (MonadLogger, logInfo, logError)
import           Control.Monad.IO.Class                  (MonadIO, liftIO)
import           Control.Monad.Catch                     (MonadMask, MonadThrow)
import           Network.HTTP.Types.Status               (ok200)

import           LaunchDarkly.Server.Network.Common      (checkAuthorization, tryHTTP, handleUnauthorized)
import           LaunchDarkly.Server.Features            (Flag, Segment)
import           LaunchDarkly.AesonCompat                (KeyMap)


import GHC.Natural (Natural)
import LaunchDarkly.Server.DataSource.Internal (DataSourceUpdates(..))
import LaunchDarkly.Server.Config.ClientContext
import LaunchDarkly.Server.Client.Internal (Status(..))
import LaunchDarkly.Server.Config.HttpConfiguration (HttpConfiguration(..), prepareRequest)

data PollingResponse = PollingResponse
    { PollingResponse -> KeyMap Flag
flags    :: !(KeyMap Flag)
    , PollingResponse -> KeyMap Segment
segments :: !(KeyMap Segment)
    } deriving ((forall x. PollingResponse -> Rep PollingResponse x)
-> (forall x. Rep PollingResponse x -> PollingResponse)
-> Generic PollingResponse
forall x. Rep PollingResponse x -> PollingResponse
forall x. PollingResponse -> Rep PollingResponse x
forall a.
(forall x. a -> Rep a x) -> (forall x. Rep a x -> a) -> Generic a
$cto :: forall x. Rep PollingResponse x -> PollingResponse
$cfrom :: forall x. PollingResponse -> Rep PollingResponse x
Generic, Value -> Parser [PollingResponse]
Value -> Parser PollingResponse
(Value -> Parser PollingResponse)
-> (Value -> Parser [PollingResponse]) -> FromJSON PollingResponse
forall a.
(Value -> Parser a) -> (Value -> Parser [a]) -> FromJSON a
parseJSONList :: Value -> Parser [PollingResponse]
$cparseJSONList :: Value -> Parser [PollingResponse]
parseJSON :: Value -> Parser PollingResponse
$cparseJSON :: Value -> Parser PollingResponse
FromJSON, Int -> PollingResponse -> ShowS
[PollingResponse] -> ShowS
PollingResponse -> String
(Int -> PollingResponse -> ShowS)
-> (PollingResponse -> String)
-> ([PollingResponse] -> ShowS)
-> Show PollingResponse
forall a.
(Int -> a -> ShowS) -> (a -> String) -> ([a] -> ShowS) -> Show a
showList :: [PollingResponse] -> ShowS
$cshowList :: [PollingResponse] -> ShowS
show :: PollingResponse -> String
$cshow :: PollingResponse -> String
showsPrec :: Int -> PollingResponse -> ShowS
$cshowsPrec :: Int -> PollingResponse -> ShowS
Show)

processPoll :: (MonadIO m, MonadLogger m, MonadMask m, MonadThrow m) => Manager -> DataSourceUpdates -> Request -> m ()
processPoll :: Manager -> DataSourceUpdates -> Request -> m ()
processPoll Manager
manager DataSourceUpdates
dataSourceUpdates Request
request = IO (Either HttpException (Response ByteString))
-> m (Either HttpException (Response ByteString))
forall (m :: * -> *) a. MonadIO m => IO a -> m a
liftIO (IO (Response ByteString)
-> IO (Either HttpException (Response ByteString))
forall (m :: * -> *) a.
MonadCatch m =>
m a -> m (Either HttpException a)
tryHTTP (IO (Response ByteString)
 -> IO (Either HttpException (Response ByteString)))
-> IO (Response ByteString)
-> IO (Either HttpException (Response ByteString))
forall a b. (a -> b) -> a -> b
$ Request -> Manager -> IO (Response ByteString)
httpLbs Request
request Manager
manager) m (Either HttpException (Response ByteString))
-> (Either HttpException (Response ByteString) -> m ()) -> m ()
forall (m :: * -> *) a b. Monad m => m a -> (a -> m b) -> m b
>>= \case
    (Left HttpException
err)       -> $(Int
String
LogLevel
String -> Text
String -> String -> String -> CharPos -> CharPos -> Loc
Text -> Text
Loc -> Text -> LogLevel -> Text -> m ()
(Text -> m ()) -> (Text -> Text) -> Text -> m ()
forall a. a -> a
forall b c a. (b -> c) -> (a -> b) -> a -> c
forall (m :: * -> *) msg.
(MonadLogger m, ToLogStr msg) =>
Loc -> Text -> LogLevel -> msg -> m ()
pack :: String -> Text
monadLoggerLog :: forall (m :: * -> *) msg.
(MonadLogger m, ToLogStr msg) =>
Loc -> Text -> LogLevel -> msg -> m ()
. :: forall b c a. (b -> c) -> (a -> b) -> a -> c
id :: forall a. a -> a
logError) (String -> Text
T.pack (String -> Text) -> String -> Text
forall a b. (a -> b) -> a -> b
$ HttpException -> String
forall a. Show a => a -> String
show HttpException
err)
    (Right Response ByteString
response) -> Response ByteString -> m ()
forall (m :: * -> *) body. MonadThrow m => Response body -> m ()
checkAuthorization Response ByteString
response m () -> m () -> m ()
forall (m :: * -> *) a b. Monad m => m a -> m b -> m b
>> if Response ByteString -> Status
forall body. Response body -> Status
responseStatus Response ByteString
response Status -> Status -> Bool
forall a. Eq a => a -> a -> Bool
/= Status
ok200
        then $(Int
String
LogLevel
String -> Text
String -> String -> String -> CharPos -> CharPos -> Loc
Text -> Text
Loc -> Text -> LogLevel -> Text -> m ()
(Text -> m ()) -> (Text -> Text) -> Text -> m ()
forall a. a -> a
forall b c a. (b -> c) -> (a -> b) -> a -> c
forall (m :: * -> *) msg.
(MonadLogger m, ToLogStr msg) =>
Loc -> Text -> LogLevel -> msg -> m ()
pack :: String -> Text
monadLoggerLog :: forall (m :: * -> *) msg.
(MonadLogger m, ToLogStr msg) =>
Loc -> Text -> LogLevel -> msg -> m ()
. :: forall b c a. (b -> c) -> (a -> b) -> a -> c
id :: forall a. a -> a
logError) Text
"unexpected polling status code"
        else case (ByteString -> Either String PollingResponse
forall a. FromJSON a => ByteString -> Either String a
eitherDecode (Response ByteString -> ByteString
forall body. Response body -> body
responseBody Response ByteString
response) :: Either String PollingResponse) of
            (Left String
err)   -> $(Int
String
LogLevel
String -> Text
String -> String -> String -> CharPos -> CharPos -> Loc
Text -> Text
Loc -> Text -> LogLevel -> Text -> m ()
(Text -> m ()) -> (Text -> Text) -> Text -> m ()
forall a. a -> a
forall b c a. (b -> c) -> (a -> b) -> a -> c
forall (m :: * -> *) msg.
(MonadLogger m, ToLogStr msg) =>
Loc -> Text -> LogLevel -> msg -> m ()
pack :: String -> Text
monadLoggerLog :: forall (m :: * -> *) msg.
(MonadLogger m, ToLogStr msg) =>
Loc -> Text -> LogLevel -> msg -> m ()
. :: forall b c a. (b -> c) -> (a -> b) -> a -> c
id :: forall a. a -> a
logError) (String -> Text
T.pack (String -> Text) -> String -> Text
forall a b. (a -> b) -> a -> b
$ ShowS
forall a. Show a => a -> String
show String
err)
            (Right PollingResponse
body) -> do
                Either Text ()
status <- IO (Either Text ()) -> m (Either Text ())
forall (m :: * -> *) a. MonadIO m => IO a -> m a
liftIO (IO (Either Text ()) -> m (Either Text ()))
-> IO (Either Text ()) -> m (Either Text ())
forall a b. (a -> b) -> a -> b
$ DataSourceUpdates
-> KeyMap Flag -> KeyMap Segment -> IO (Either Text ())
dataSourceUpdatesInit DataSourceUpdates
dataSourceUpdates (PollingResponse -> KeyMap Flag
forall (f :: Symbol) a s. HasField' f s a => s -> a
getField @"flags" PollingResponse
body) (PollingResponse -> KeyMap Segment
forall (f :: Symbol) a s. HasField' f s a => s -> a
getField @"segments" PollingResponse
body)
                case Either Text ()
status of
                  Right () -> IO () -> m ()
forall (m :: * -> *) a. MonadIO m => IO a -> m a
liftIO (IO () -> m ()) -> IO () -> m ()
forall a b. (a -> b) -> a -> b
$ DataSourceUpdates -> Status -> IO ()
dataSourceUpdatesSetStatus DataSourceUpdates
dataSourceUpdates Status
Initialized
                  Left Text
err ->
                    $(Int
String
LogLevel
String -> Text
String -> String -> String -> CharPos -> CharPos -> Loc
Text -> Text
Loc -> Text -> LogLevel -> Text -> m ()
(Text -> m ()) -> (Text -> Text) -> Text -> m ()
forall a. a -> a
forall b c a. (b -> c) -> (a -> b) -> a -> c
forall (m :: * -> *) msg.
(MonadLogger m, ToLogStr msg) =>
Loc -> Text -> LogLevel -> msg -> m ()
pack :: String -> Text
monadLoggerLog :: forall (m :: * -> *) msg.
(MonadLogger m, ToLogStr msg) =>
Loc -> Text -> LogLevel -> msg -> m ()
. :: forall b c a. (b -> c) -> (a -> b) -> a -> c
id :: forall a. a -> a
logError) (Text -> m ()) -> Text -> m ()
forall a b. (a -> b) -> a -> b
$ Text -> Text -> Text
T.append Text
"store failed put: " Text
err


pollingThread :: (MonadIO m, MonadLogger m, MonadMask m) => Text -> Natural -> ClientContext -> DataSourceUpdates -> m ()
pollingThread :: Text -> Natural -> ClientContext -> DataSourceUpdates -> m ()
pollingThread Text
baseURI Natural
pollingIntervalSeconds ClientContext
clientContext DataSourceUpdates
dataSourceUpdates = do
    let pollingMicroseconds :: Int
pollingMicroseconds = Natural -> Int
forall a b. (Integral a, Num b) => a -> b
fromIntegral Natural
pollingIntervalSeconds Int -> Int -> Int
forall a. Num a => a -> a -> a
* Int
1000000
    Request
req <- IO Request -> m Request
forall (m :: * -> *) a. MonadIO m => IO a -> m a
liftIO (IO Request -> m Request) -> IO Request -> m Request
forall a b. (a -> b) -> a -> b
$ HttpConfiguration -> String -> IO Request
forall (m :: * -> *).
MonadThrow m =>
HttpConfiguration -> String -> m Request
prepareRequest (ClientContext -> HttpConfiguration
httpConfiguration ClientContext
clientContext) (Text -> String
T.unpack Text
baseURI String -> ShowS
forall a. [a] -> [a] -> [a]
++ String
"/sdk/latest-all") 
    DataSourceUpdates -> m () -> m ()
forall (m :: * -> *).
(MonadIO m, MonadLogger m, MonadCatch m) =>
DataSourceUpdates -> m () -> m ()
handleUnauthorized DataSourceUpdates
dataSourceUpdates (m () -> m ()) -> m () -> m ()
forall a b. (a -> b) -> a -> b
$ m () -> m ()
forall (f :: * -> *) a b. Applicative f => f a -> f b
forever (m () -> m ()) -> m () -> m ()
forall a b. (a -> b) -> a -> b
$ do
        $(Int
String
LogLevel
String -> Text
String -> String -> String -> CharPos -> CharPos -> Loc
Text -> Text
Loc -> Text -> LogLevel -> Text -> m ()
(Text -> m ()) -> (Text -> Text) -> Text -> m ()
forall a. a -> a
forall b c a. (b -> c) -> (a -> b) -> a -> c
forall (m :: * -> *) msg.
(MonadLogger m, ToLogStr msg) =>
Loc -> Text -> LogLevel -> msg -> m ()
pack :: String -> Text
monadLoggerLog :: forall (m :: * -> *) msg.
(MonadLogger m, ToLogStr msg) =>
Loc -> Text -> LogLevel -> msg -> m ()
. :: forall b c a. (b -> c) -> (a -> b) -> a -> c
id :: forall a. a -> a
logInfo) Text
"starting poll"
        Manager -> DataSourceUpdates -> Request -> m ()
forall (m :: * -> *).
(MonadIO m, MonadLogger m, MonadMask m, MonadThrow m) =>
Manager -> DataSourceUpdates -> Request -> m ()
processPoll (HttpConfiguration -> Manager
tlsManager (HttpConfiguration -> Manager) -> HttpConfiguration -> Manager
forall a b. (a -> b) -> a -> b
$ ClientContext -> HttpConfiguration
httpConfiguration ClientContext
clientContext) DataSourceUpdates
dataSourceUpdates Request
req
        $(Int
String
LogLevel
String -> Text
String -> String -> String -> CharPos -> CharPos -> Loc
Text -> Text
Loc -> Text -> LogLevel -> Text -> m ()
(Text -> m ()) -> (Text -> Text) -> Text -> m ()
forall a. a -> a
forall b c a. (b -> c) -> (a -> b) -> a -> c
forall (m :: * -> *) msg.
(MonadLogger m, ToLogStr msg) =>
Loc -> Text -> LogLevel -> msg -> m ()
pack :: String -> Text
monadLoggerLog :: forall (m :: * -> *) msg.
(MonadLogger m, ToLogStr msg) =>
Loc -> Text -> LogLevel -> msg -> m ()
. :: forall b c a. (b -> c) -> (a -> b) -> a -> c
id :: forall a. a -> a
logInfo) Text
"finished poll"
        IO () -> m ()
forall (m :: * -> *) a. MonadIO m => IO a -> m a
liftIO (IO () -> m ()) -> IO () -> m ()
forall a b. (a -> b) -> a -> b
$ Int -> IO ()
threadDelay Int
pollingMicroseconds