module AWS.Lambda.RuntimeClient (
RuntimeClientConfig,
getRuntimeClientConfig,
getNextData,
getNextEvent,
sendEventSuccess,
sendEventError,
) where
import AWS.Lambda.Context (LambdaContext(..))
import AWS.Lambda.Internal (DynamicContext(..), StaticContext,
mkContext)
import Control.Applicative ((<*>))
import Control.Concurrent (threadDelay)
import Control.Exception (displayException, try, throw)
import Control.Monad (unless)
import Control.Monad.IO.Class (MonadIO, liftIO)
import Data.Aeson (decode, encode, Value)
import Data.Aeson.Parser (value')
import Data.Aeson.Types (FromJSON, ToJSON)
import Data.Bifunctor (first)
import qualified Data.ByteString as BS
import qualified Data.ByteString.Char8 as BSC
import qualified Data.ByteString.Lazy as BSW
import qualified Data.ByteString.Internal as BSI
import Data.Conduit (ConduitM, runConduit, yield, (.|))
import Data.Conduit.Attoparsec (sinkParser)
import Data.Text.Encoding (decodeUtf8)
import Data.Time.Clock.POSIX (posixSecondsToUTCTime)
import GHC.Generics (Generic (..))
import Network.HTTP.Client (BodyReader, HttpException, Manager,
Request, Response, brRead,
defaultManagerSettings, httpNoBody,
managerConnCount,
managerIdleConnectionCount,
managerResponseTimeout,
managerSetProxy, newManager,
noProxy, parseRequest, responseBody,
responseTimeoutNone, withResponse)
import Network.HTTP.Simple (getResponseBody,
getResponseHeader,
getResponseStatus,
setRequestBodyJSON,
setRequestBodyLBS,
setRequestCheckStatus,
setRequestHeader, setRequestMethod,
setRequestPath)
import Network.HTTP.Types.Status (status403, status413, statusIsSuccessful)
import System.Environment (getEnv)
import System.Envy (decodeEnv)
data LambdaError = LambdaError
{ LambdaError -> String
errorMessage :: String,
LambdaError -> String
errorType :: String,
LambdaError -> [String]
stackTrace :: [String]
} deriving (Int -> LambdaError -> ShowS
[LambdaError] -> ShowS
LambdaError -> String
(Int -> LambdaError -> ShowS)
-> (LambdaError -> String)
-> ([LambdaError] -> ShowS)
-> Show LambdaError
forall a.
(Int -> a -> ShowS) -> (a -> String) -> ([a] -> ShowS) -> Show a
showList :: [LambdaError] -> ShowS
$cshowList :: [LambdaError] -> ShowS
show :: LambdaError -> String
$cshow :: LambdaError -> String
showsPrec :: Int -> LambdaError -> ShowS
$cshowsPrec :: Int -> LambdaError -> ShowS
Show, (forall x. LambdaError -> Rep LambdaError x)
-> (forall x. Rep LambdaError x -> LambdaError)
-> Generic LambdaError
forall x. Rep LambdaError x -> LambdaError
forall x. LambdaError -> Rep LambdaError x
forall a.
(forall x. a -> Rep a x) -> (forall x. Rep a x -> a) -> Generic a
$cto :: forall x. Rep LambdaError x -> LambdaError
$cfrom :: forall x. LambdaError -> Rep LambdaError x
Generic)
instance ToJSON LambdaError
data RuntimeClientConfig = RuntimeClientConfig Request Manager StaticContext
getRuntimeClientConfig :: IO RuntimeClientConfig
getRuntimeClientConfig :: IO RuntimeClientConfig
getRuntimeClientConfig = do
String
awsLambdaRuntimeApi <- String -> IO String
getEnv String
"AWS_LAMBDA_RUNTIME_API"
Request
req <- String -> IO Request
forall (m :: * -> *). MonadThrow m => String -> m Request
parseRequest (String -> IO Request) -> String -> IO Request
forall a b. (a -> b) -> a -> b
$ String
"http://" String -> ShowS
forall a. [a] -> [a] -> [a]
++ String
awsLambdaRuntimeApi
Manager
man <- ManagerSettings -> IO Manager
newManager
(ManagerSettings -> IO Manager) -> ManagerSettings -> IO Manager
forall a b. (a -> b) -> a -> b
$ ProxyOverride -> ManagerSettings -> ManagerSettings
managerSetProxy ProxyOverride
noProxy
(ManagerSettings -> ManagerSettings)
-> ManagerSettings -> ManagerSettings
forall a b. (a -> b) -> a -> b
$ ManagerSettings
defaultManagerSettings
{ managerResponseTimeout :: ResponseTimeout
managerResponseTimeout = ResponseTimeout
responseTimeoutNone
, managerConnCount :: Int
managerConnCount = Int
1
, managerIdleConnectionCount :: Int
managerIdleConnectionCount = Int
1
}
Either String StaticContext
possibleStaticCtx <- IO (Either String StaticContext)
-> IO (Either String StaticContext)
forall (m :: * -> *) a. MonadIO m => IO a -> m a
liftIO (IO (Either String StaticContext)
-> IO (Either String StaticContext))
-> IO (Either String StaticContext)
-> IO (Either String StaticContext)
forall a b. (a -> b) -> a -> b
$ (IO (Either String StaticContext)
forall a. FromEnv a => IO (Either String a)
decodeEnv :: IO (Either String StaticContext))
case Either String StaticContext
possibleStaticCtx of
Left String
err -> do
IO () -> IO ()
forall (m :: * -> *) a. MonadIO m => IO a -> m a
liftIO (IO () -> IO ()) -> IO () -> IO ()
forall a b. (a -> b) -> a -> b
$ Request -> Manager -> String -> IO ()
sendInitError Request
req Manager
man String
err
String -> IO RuntimeClientConfig
forall a. HasCallStack => String -> a
error String
err
Right StaticContext
staticCtx -> RuntimeClientConfig -> IO RuntimeClientConfig
forall (m :: * -> *) a. Monad m => a -> m a
return (RuntimeClientConfig -> IO RuntimeClientConfig)
-> RuntimeClientConfig -> IO RuntimeClientConfig
forall a b. (a -> b) -> a -> b
$ Request -> Manager -> StaticContext -> RuntimeClientConfig
RuntimeClientConfig Request
req Manager
man StaticContext
staticCtx
getNextData :: RuntimeClientConfig -> IO (BS.ByteString, Value, Either String LambdaContext)
getNextData :: RuntimeClientConfig
-> IO (ByteString, Value, Either String LambdaContext)
getNextData runtimeClientConfig :: RuntimeClientConfig
runtimeClientConfig@(RuntimeClientConfig Request
_ Manager
_ StaticContext
staticContext) = do
Response Value
nextRes <- RuntimeClientConfig -> IO (Response Value)
getNextEvent RuntimeClientConfig
runtimeClientConfig
let reqIdBS :: ByteString
reqIdBS = [ByteString] -> ByteString
forall a. [a] -> a
head ([ByteString] -> ByteString) -> [ByteString] -> ByteString
forall a b. (a -> b) -> a -> b
$ HeaderName -> Response Value -> [ByteString]
forall a. HeaderName -> Response a -> [ByteString]
getResponseHeader HeaderName
"Lambda-Runtime-Aws-Request-Id" Response Value
nextRes
let mTraceId :: Maybe Text
mTraceId = (ByteString -> Text) -> Maybe ByteString -> Maybe Text
forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
fmap ByteString -> Text
decodeUtf8 (Maybe ByteString -> Maybe Text) -> Maybe ByteString -> Maybe Text
forall a b. (a -> b) -> a -> b
$ [ByteString] -> Maybe ByteString
forall a. [a] -> Maybe a
exactlyOneHeader ([ByteString] -> Maybe ByteString)
-> [ByteString] -> Maybe ByteString
forall a b. (a -> b) -> a -> b
$ HeaderName -> Response Value -> [ByteString]
forall a. HeaderName -> Response a -> [ByteString]
getResponseHeader HeaderName
"Lambda-Runtime-Trace-Id" Response Value
nextRes
let mFunctionArn :: Maybe Text
mFunctionArn = (ByteString -> Text) -> Maybe ByteString -> Maybe Text
forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
fmap ByteString -> Text
decodeUtf8 (Maybe ByteString -> Maybe Text) -> Maybe ByteString -> Maybe Text
forall a b. (a -> b) -> a -> b
$ [ByteString] -> Maybe ByteString
forall a. [a] -> Maybe a
exactlyOneHeader ([ByteString] -> Maybe ByteString)
-> [ByteString] -> Maybe ByteString
forall a b. (a -> b) -> a -> b
$ HeaderName -> Response Value -> [ByteString]
forall a. HeaderName -> Response a -> [ByteString]
getResponseHeader HeaderName
"Lambda-Runtime-Invoked-Function-Arn" Response Value
nextRes
let mDeadline :: Maybe UTCTime
mDeadline = do
ByteString
header <- [ByteString] -> Maybe ByteString
forall a. [a] -> Maybe a
exactlyOneHeader (HeaderName -> Response Value -> [ByteString]
forall a. HeaderName -> Response a -> [ByteString]
getResponseHeader HeaderName
"Lambda-Runtime-Deadline-Ms" Response Value
nextRes)
Double
milliseconds :: Double <- String -> Maybe Double
forall a. Read a => String -> Maybe a
readMaybe (String -> Maybe Double) -> String -> Maybe Double
forall a b. (a -> b) -> a -> b
$ ByteString -> String
BSC.unpack ByteString
header
UTCTime -> Maybe UTCTime
forall (m :: * -> *) a. Monad m => a -> m a
return (UTCTime -> Maybe UTCTime) -> UTCTime -> Maybe UTCTime
forall a b. (a -> b) -> a -> b
$ POSIXTime -> UTCTime
posixSecondsToUTCTime (POSIXTime -> UTCTime) -> POSIXTime -> UTCTime
forall a b. (a -> b) -> a -> b
$ Double -> POSIXTime
forall a b. (Real a, Fractional b) => a -> b
realToFrac (Double -> POSIXTime) -> Double -> POSIXTime
forall a b. (a -> b) -> a -> b
$ Double
milliseconds Double -> Double -> Double
forall a. Fractional a => a -> a -> a
/ Double
1000
let mClientContext :: Maybe (Maybe ClientContext)
mClientContext = [ByteString] -> Maybe (Maybe ClientContext)
forall a. FromJSON a => [ByteString] -> Maybe (Maybe a)
decodeOptionalHeader ([ByteString] -> Maybe (Maybe ClientContext))
-> [ByteString] -> Maybe (Maybe ClientContext)
forall a b. (a -> b) -> a -> b
$ HeaderName -> Response Value -> [ByteString]
forall a. HeaderName -> Response a -> [ByteString]
getResponseHeader HeaderName
"Lambda-Runtime-Client-Context" Response Value
nextRes
let mIdentity :: Maybe (Maybe CognitoIdentity)
mIdentity = [ByteString] -> Maybe (Maybe CognitoIdentity)
forall a. FromJSON a => [ByteString] -> Maybe (Maybe a)
decodeOptionalHeader ([ByteString] -> Maybe (Maybe CognitoIdentity))
-> [ByteString] -> Maybe (Maybe CognitoIdentity)
forall a b. (a -> b) -> a -> b
$ HeaderName -> Response Value -> [ByteString]
forall a. HeaderName -> Response a -> [ByteString]
getResponseHeader HeaderName
"Lambda-Runtime-Cognito-Identity" Response Value
nextRes
let eDynCtx :: Either String DynamicContext
eDynCtx =
String -> Maybe DynamicContext -> Either String DynamicContext
forall b a. b -> Maybe a -> Either b a
maybeToEither String
"Runtime Error: Unable to decode Context from event response."
(Maybe DynamicContext -> Either String DynamicContext)
-> Maybe DynamicContext -> Either String DynamicContext
forall a b. (a -> b) -> a -> b
$ Text
-> Text
-> Text
-> UTCTime
-> Maybe ClientContext
-> Maybe CognitoIdentity
-> DynamicContext
DynamicContext (ByteString -> Text
decodeUtf8 ByteString
reqIdBS)
(Text
-> Text
-> UTCTime
-> Maybe ClientContext
-> Maybe CognitoIdentity
-> DynamicContext)
-> Maybe Text
-> Maybe
(Text
-> UTCTime
-> Maybe ClientContext
-> Maybe CognitoIdentity
-> DynamicContext)
forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
<$> Maybe Text
mFunctionArn
Maybe
(Text
-> UTCTime
-> Maybe ClientContext
-> Maybe CognitoIdentity
-> DynamicContext)
-> Maybe Text
-> Maybe
(UTCTime
-> Maybe ClientContext -> Maybe CognitoIdentity -> DynamicContext)
forall (f :: * -> *) a b. Applicative f => f (a -> b) -> f a -> f b
<*> Maybe Text
mTraceId
Maybe
(UTCTime
-> Maybe ClientContext -> Maybe CognitoIdentity -> DynamicContext)
-> Maybe UTCTime
-> Maybe
(Maybe ClientContext -> Maybe CognitoIdentity -> DynamicContext)
forall (f :: * -> *) a b. Applicative f => f (a -> b) -> f a -> f b
<*> Maybe UTCTime
mDeadline
Maybe
(Maybe ClientContext -> Maybe CognitoIdentity -> DynamicContext)
-> Maybe (Maybe ClientContext)
-> Maybe (Maybe CognitoIdentity -> DynamicContext)
forall (f :: * -> *) a b. Applicative f => f (a -> b) -> f a -> f b
<*> Maybe (Maybe ClientContext)
mClientContext
Maybe (Maybe CognitoIdentity -> DynamicContext)
-> Maybe (Maybe CognitoIdentity) -> Maybe DynamicContext
forall (f :: * -> *) a b. Applicative f => f (a -> b) -> f a -> f b
<*> Maybe (Maybe CognitoIdentity)
mIdentity
let eCtx :: Either String LambdaContext
eCtx = (DynamicContext -> LambdaContext)
-> Either String DynamicContext -> Either String LambdaContext
forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
fmap (StaticContext -> DynamicContext -> LambdaContext
mkContext StaticContext
staticContext) Either String DynamicContext
eDynCtx
let event :: Value
event = Response Value -> Value
forall a. Response a -> a
getResponseBody Response Value
nextRes
(ByteString, Value, Either String LambdaContext)
-> IO (ByteString, Value, Either String LambdaContext)
forall (m :: * -> *) a. Monad m => a -> m a
return (ByteString
reqIdBS, Value
event, Either String LambdaContext
eCtx)
getNextEvent :: RuntimeClientConfig -> IO (Response Value)
getNextEvent :: RuntimeClientConfig -> IO (Response Value)
getNextEvent (RuntimeClientConfig Request
baseRuntimeRequest Manager
manager StaticContext
_) = do
Either HttpException (Response Value)
resOrEx <- IO (Response Value) -> IO (Either HttpException (Response Value))
forall a. IO (Response a) -> IO (Either HttpException (Response a))
runtimeClientRetryTry (IO (Response Value) -> IO (Either HttpException (Response Value)))
-> IO (Response Value)
-> IO (Either HttpException (Response Value))
forall a b. (a -> b) -> a -> b
$ (Request -> Manager -> IO (Response Value))
-> Manager -> Request -> IO (Response Value)
forall a b c. (a -> b -> c) -> b -> a -> c
flip Request -> Manager -> IO (Response Value)
httpValue Manager
manager (Request -> IO (Response Value)) -> Request -> IO (Response Value)
forall a b. (a -> b) -> a -> b
$ Request -> Request
toNextEventRequest Request
baseRuntimeRequest
let checkStatus :: Response a -> Either a (Response a)
checkStatus Response a
res = if Bool -> Bool
not (Bool -> Bool) -> Bool -> Bool
forall a b. (a -> b) -> a -> b
$ Status -> Bool
statusIsSuccessful (Status -> Bool) -> Status -> Bool
forall a b. (a -> b) -> a -> b
$ Response a -> Status
forall a. Response a -> Status
getResponseStatus Response a
res then
a -> Either a (Response a)
forall a b. a -> Either a b
Left a
"Unexpected Runtime Error: Could not retrieve next event."
else
Response a -> Either a (Response a)
forall a b. b -> Either a b
Right Response a
res
let resOrMsg :: Either String (Response Value)
resOrMsg = (HttpException -> String)
-> Either HttpException (Response Value)
-> Either String (Response Value)
forall (p :: * -> * -> *) a b c.
Bifunctor p =>
(a -> b) -> p a c -> p b c
first (HttpException -> String
forall e. Exception e => e -> String
displayException :: HttpException -> String) Either HttpException (Response Value)
resOrEx Either String (Response Value)
-> (Response Value -> Either String (Response Value))
-> Either String (Response Value)
forall (m :: * -> *) a b. Monad m => m a -> (a -> m b) -> m b
>>= Response Value -> Either String (Response Value)
forall a a. IsString a => Response a -> Either a (Response a)
checkStatus
case Either String (Response Value)
resOrMsg of
Left String
msg -> do
()
_ <- Request -> Manager -> String -> IO ()
sendInitError Request
baseRuntimeRequest Manager
manager String
msg
String -> IO (Response Value)
forall a. HasCallStack => String -> a
error String
msg
Right Response Value
y -> Response Value -> IO (Response Value)
forall (m :: * -> *) a. Monad m => a -> m a
return Response Value
y
sendEventSuccess :: ToJSON a => RuntimeClientConfig -> BS.ByteString -> a -> IO ()
sendEventSuccess :: RuntimeClientConfig -> ByteString -> a -> IO ()
sendEventSuccess rcc :: RuntimeClientConfig
rcc@(RuntimeClientConfig Request
baseRuntimeRequest Manager
manager StaticContext
_) ByteString
reqId a
json = do
Either HttpException (Response ())
resOrEx <- IO (Response ()) -> IO (Either HttpException (Response ()))
forall a. IO (Response a) -> IO (Either HttpException (Response a))
runtimeClientRetryTry (IO (Response ()) -> IO (Either HttpException (Response ())))
-> IO (Response ()) -> IO (Either HttpException (Response ()))
forall a b. (a -> b) -> a -> b
$ (Request -> Manager -> IO (Response ()))
-> Manager -> Request -> IO (Response ())
forall a b c. (a -> b -> c) -> b -> a -> c
flip Request -> Manager -> IO (Response ())
httpNoBody Manager
manager (Request -> IO (Response ())) -> Request -> IO (Response ())
forall a b. (a -> b) -> a -> b
$ ByteString -> a -> Request -> Request
forall a. ToJSON a => ByteString -> a -> Request -> Request
toEventSuccessRequest ByteString
reqId a
json Request
baseRuntimeRequest
let resOrTypedMsg :: Either (Either String String) ()
resOrTypedMsg = case Either HttpException (Response ())
resOrEx of
Left HttpException
ex ->
Either String String -> Either (Either String String) ()
forall a b. a -> Either a b
Left (Either String String -> Either (Either String String) ())
-> Either String String -> Either (Either String String) ()
forall a b. (a -> b) -> a -> b
$ String -> Either String String
forall a b. a -> Either a b
Left (String -> Either String String) -> String -> Either String String
forall a b. (a -> b) -> a -> b
$ HttpException -> String
forall e. Exception e => e -> String
displayException (HttpException
ex :: HttpException)
Right Response ()
res ->
if Response () -> Status
forall a. Response a -> Status
getResponseStatus Response ()
res Status -> Status -> Bool
forall a. Eq a => a -> a -> Bool
== Status
status413 then
Either String String -> Either (Either String String) ()
forall a b. a -> Either a b
Left (String -> Either String String
forall a b. b -> Either a b
Right String
"Payload Too Large")
else if Bool -> Bool
not (Bool -> Bool) -> Bool -> Bool
forall a b. (a -> b) -> a -> b
$ Status -> Bool
statusIsSuccessful (Status -> Bool) -> Status -> Bool
forall a b. (a -> b) -> a -> b
$ Response () -> Status
forall a. Response a -> Status
getResponseStatus Response ()
res then
Either String String -> Either (Either String String) ()
forall a b. a -> Either a b
Left (String -> Either String String
forall a b. a -> Either a b
Left String
"Unexpected Runtime Error: Could not post handler result.")
else
() -> Either (Either String String) ()
forall a b. b -> Either a b
Right ()
case Either (Either String String) ()
resOrTypedMsg of
Left (Left String
msg) ->
RuntimeClientConfig -> ByteString -> String -> IO ()
sendEventError RuntimeClientConfig
rcc ByteString
reqId String
msg
Left (Right String
msg) -> String -> IO ()
forall a. HasCallStack => String -> a
error String
msg
Right () -> () -> IO ()
forall (m :: * -> *) a. Monad m => a -> m a
return ()
sendEventError :: RuntimeClientConfig -> BS.ByteString -> String -> IO ()
sendEventError :: RuntimeClientConfig -> ByteString -> String -> IO ()
sendEventError (RuntimeClientConfig Request
baseRuntimeRequest Manager
manager StaticContext
_) ByteString
reqId String
e =
(Response () -> ()) -> IO (Response ()) -> IO ()
forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
fmap (() -> Response () -> ()
forall a b. a -> b -> a
const ()) (IO (Response ()) -> IO ()) -> IO (Response ()) -> IO ()
forall a b. (a -> b) -> a -> b
$ IO (Response ()) -> IO (Response ())
forall a. IO (Response a) -> IO (Response a)
runtimeClientRetry (IO (Response ()) -> IO (Response ()))
-> IO (Response ()) -> IO (Response ())
forall a b. (a -> b) -> a -> b
$ (Request -> Manager -> IO (Response ()))
-> Manager -> Request -> IO (Response ())
forall a b c. (a -> b -> c) -> b -> a -> c
flip Request -> Manager -> IO (Response ())
httpNoBody Manager
manager (Request -> IO (Response ())) -> Request -> IO (Response ())
forall a b. (a -> b) -> a -> b
$ ByteString -> String -> Request -> Request
toEventErrorRequest ByteString
reqId String
e Request
baseRuntimeRequest
sendInitError :: Request -> Manager -> String -> IO ()
sendInitError :: Request -> Manager -> String -> IO ()
sendInitError Request
baseRuntimeRequest Manager
manager String
e =
(Response () -> ()) -> IO (Response ()) -> IO ()
forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
fmap (() -> Response () -> ()
forall a b. a -> b -> a
const ()) (IO (Response ()) -> IO ()) -> IO (Response ()) -> IO ()
forall a b. (a -> b) -> a -> b
$ IO (Response ()) -> IO (Response ())
forall a. IO (Response a) -> IO (Response a)
runtimeClientRetry (IO (Response ()) -> IO (Response ()))
-> IO (Response ()) -> IO (Response ())
forall a b. (a -> b) -> a -> b
$ (Request -> Manager -> IO (Response ()))
-> Manager -> Request -> IO (Response ())
forall a b c. (a -> b -> c) -> b -> a -> c
flip Request -> Manager -> IO (Response ())
httpNoBody Manager
manager (Request -> IO (Response ())) -> Request -> IO (Response ())
forall a b. (a -> b) -> a -> b
$ String -> Request -> Request
toInitErrorRequest String
e Request
baseRuntimeRequest
exactlyOneHeader :: [a] -> Maybe a
[a
a] = a -> Maybe a
forall a. a -> Maybe a
Just a
a
exactlyOneHeader [a]
_ = Maybe a
forall a. Maybe a
Nothing
maybeToEither :: b -> Maybe a -> Either b a
maybeToEither :: b -> Maybe a -> Either b a
maybeToEither b
b Maybe a
ma = case Maybe a
ma of
Maybe a
Nothing -> b -> Either b a
forall a b. a -> Either a b
Left b
b
Just a
a -> a -> Either b a
forall a b. b -> Either a b
Right a
a
readMaybe :: (Read a) => String -> Maybe a
readMaybe :: String -> Maybe a
readMaybe String
s = case ReadS a
forall a. Read a => ReadS a
reads String
s of
[(a
x,String
"")] -> a -> Maybe a
forall a. a -> Maybe a
Just a
x
[(a, String)]
_ -> Maybe a
forall a. Maybe a
Nothing
decodeHeaderValue :: FromJSON a => BSC.ByteString -> Maybe a
= ByteString -> Maybe a
forall a. FromJSON a => ByteString -> Maybe a
decode (ByteString -> Maybe a)
-> (ByteString -> ByteString) -> ByteString -> Maybe a
forall b c a. (b -> c) -> (a -> b) -> a -> c
. [Word8] -> ByteString
BSW.pack ([Word8] -> ByteString)
-> (ByteString -> [Word8]) -> ByteString -> ByteString
forall b c a. (b -> c) -> (a -> b) -> a -> c
. (Char -> Word8) -> String -> [Word8]
forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
fmap Char -> Word8
BSI.c2w (String -> [Word8])
-> (ByteString -> String) -> ByteString -> [Word8]
forall b c a. (b -> c) -> (a -> b) -> a -> c
. ByteString -> String
BSC.unpack
decodeOptionalHeader :: FromJSON a => [BSC.ByteString] -> Maybe (Maybe a)
[ByteString]
header =
case [ByteString]
header of
[] -> Maybe a -> Maybe (Maybe a)
forall a. a -> Maybe a
Just Maybe a
forall a. Maybe a
Nothing
[ByteString
x] -> (a -> Maybe a) -> Maybe a -> Maybe (Maybe a)
forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
fmap a -> Maybe a
forall a. a -> Maybe a
Just (Maybe a -> Maybe (Maybe a)) -> Maybe a -> Maybe (Maybe a)
forall a b. (a -> b) -> a -> b
$ ByteString -> Maybe a
forall a. FromJSON a => ByteString -> Maybe a
decodeHeaderValue ByteString
x
[ByteString]
_ -> Maybe (Maybe a)
forall a. Maybe a
Nothing
httpValue :: Request -> Manager -> IO (Response Value)
httpValue :: Request -> Manager -> IO (Response Value)
httpValue Request
request Manager
manager =
Request
-> Manager
-> (Response BodyReader -> IO (Response Value))
-> IO (Response Value)
forall a.
Request -> Manager -> (Response BodyReader -> IO a) -> IO a
withResponse Request
request Manager
manager (\Response BodyReader
bodyReaderRes -> do
Value
value <- ConduitT () Void IO Value -> IO Value
forall (m :: * -> *) r. Monad m => ConduitT () Void m r -> m r
runConduit (ConduitT () Void IO Value -> IO Value)
-> ConduitT () Void IO Value -> IO Value
forall a b. (a -> b) -> a -> b
$ BodyReader -> ConduitM () ByteString IO ()
forall (m :: * -> *) i.
MonadIO m =>
BodyReader -> ConduitM i ByteString m ()
bodyReaderSource (Response BodyReader -> BodyReader
forall a. Response a -> a
responseBody Response BodyReader
bodyReaderRes) ConduitM () ByteString IO ()
-> ConduitM ByteString Void IO Value -> ConduitT () Void IO Value
forall (m :: * -> *) a b c r.
Monad m =>
ConduitM a b m () -> ConduitM b c m r -> ConduitM a c m r
.| Parser ByteString Value -> ConduitM ByteString Void IO Value
forall a (m :: * -> *) b o.
(AttoparsecInput a, MonadThrow m) =>
Parser a b -> ConduitT a o m b
sinkParser Parser ByteString Value
value'
Response Value -> IO (Response Value)
forall (m :: * -> *) a. Monad m => a -> m a
return (Response Value -> IO (Response Value))
-> Response Value -> IO (Response Value)
forall a b. (a -> b) -> a -> b
$ (BodyReader -> Value) -> Response BodyReader -> Response Value
forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
fmap (Value -> BodyReader -> Value
forall a b. a -> b -> a
const Value
value) Response BodyReader
bodyReaderRes
)
bodyReaderSource :: MonadIO m
=> BodyReader
-> ConduitM i BS.ByteString m ()
bodyReaderSource :: BodyReader -> ConduitM i ByteString m ()
bodyReaderSource BodyReader
br =
ConduitM i ByteString m ()
forall i. ConduitT i ByteString m ()
loop
where
loop :: ConduitT i ByteString m ()
loop = do
ByteString
bs <- BodyReader -> ConduitT i ByteString m ByteString
forall (m :: * -> *) a. MonadIO m => IO a -> m a
liftIO (BodyReader -> ConduitT i ByteString m ByteString)
-> BodyReader -> ConduitT i ByteString m ByteString
forall a b. (a -> b) -> a -> b
$ BodyReader -> BodyReader
brRead BodyReader
br
Bool -> ConduitT i ByteString m () -> ConduitT i ByteString m ()
forall (f :: * -> *). Applicative f => Bool -> f () -> f ()
unless (ByteString -> Bool
BS.null ByteString
bs) (ConduitT i ByteString m () -> ConduitT i ByteString m ())
-> ConduitT i ByteString m () -> ConduitT i ByteString m ()
forall a b. (a -> b) -> a -> b
$ do
ByteString -> ConduitT i ByteString m ()
forall (m :: * -> *) o i. Monad m => o -> ConduitT i o m ()
yield ByteString
bs
ConduitT i ByteString m ()
loop
runtimeClientRetryTry' :: Int -> Int -> IO (Response a) -> IO (Either HttpException (Response a))
runtimeClientRetryTry' :: Int
-> Int -> IO (Response a) -> IO (Either HttpException (Response a))
runtimeClientRetryTry' Int
retries Int
maxRetries IO (Response a)
f
| Int
retries Int -> Int -> Bool
forall a. Eq a => a -> a -> Bool
== Int
maxRetries = IO (Response a) -> IO (Either HttpException (Response a))
forall e a. Exception e => IO a -> IO (Either e a)
try IO (Response a)
f
| Bool
otherwise = do
Either HttpException (Response a)
resOrEx <- IO (Response a) -> IO (Either HttpException (Response a))
forall e a. Exception e => IO a -> IO (Either e a)
try IO (Response a)
f
let retry :: IO (Either HttpException (Response a))
retry =
Int -> IO ()
threadDelay (Int
500 Int -> Int -> Int
forall a. Num a => a -> a -> a
* Int
2 Int -> Int -> Int
forall a b. (Num a, Integral b) => a -> b -> a
^ Int
retries)
IO ()
-> IO (Either HttpException (Response a))
-> IO (Either HttpException (Response a))
forall (m :: * -> *) a b. Monad m => m a -> m b -> m b
>> Int
-> Int -> IO (Response a) -> IO (Either HttpException (Response a))
forall a.
Int
-> Int -> IO (Response a) -> IO (Either HttpException (Response a))
runtimeClientRetryTry' (Int
retries Int -> Int -> Int
forall a. Num a => a -> a -> a
+ Int
1) Int
maxRetries IO (Response a)
f
case Either HttpException (Response a)
resOrEx of
Left (HttpException
_ :: HttpException) -> IO (Either HttpException (Response a))
retry
Right Response a
res ->
if Response a -> Status
forall a. Response a -> Status
getResponseStatus Response a
res Status -> Status -> Bool
forall a. Eq a => a -> a -> Bool
== Status
status403 then IO (Either HttpException (Response a))
retry
else Either HttpException (Response a)
-> IO (Either HttpException (Response a))
forall (m :: * -> *) a. Monad m => a -> m a
return (Either HttpException (Response a)
-> IO (Either HttpException (Response a)))
-> Either HttpException (Response a)
-> IO (Either HttpException (Response a))
forall a b. (a -> b) -> a -> b
$ Response a -> Either HttpException (Response a)
forall a b. b -> Either a b
Right Response a
res
runtimeClientRetryTry :: IO (Response a) -> IO (Either HttpException (Response a))
runtimeClientRetryTry :: IO (Response a) -> IO (Either HttpException (Response a))
runtimeClientRetryTry = Int
-> Int -> IO (Response a) -> IO (Either HttpException (Response a))
forall a.
Int
-> Int -> IO (Response a) -> IO (Either HttpException (Response a))
runtimeClientRetryTry' Int
0 Int
10
runtimeClientRetry :: IO (Response a) -> IO (Response a)
runtimeClientRetry :: IO (Response a) -> IO (Response a)
runtimeClientRetry = (Either HttpException (Response a) -> Response a)
-> IO (Either HttpException (Response a)) -> IO (Response a)
forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
fmap ((HttpException -> Response a)
-> (Response a -> Response a)
-> Either HttpException (Response a)
-> Response a
forall a c b. (a -> c) -> (b -> c) -> Either a b -> c
either HttpException -> Response a
forall a e. Exception e => e -> a
throw Response a -> Response a
forall a. a -> a
id) (IO (Either HttpException (Response a)) -> IO (Response a))
-> (IO (Response a) -> IO (Either HttpException (Response a)))
-> IO (Response a)
-> IO (Response a)
forall b c a. (b -> c) -> (a -> b) -> a -> c
. IO (Response a) -> IO (Either HttpException (Response a))
forall a. IO (Response a) -> IO (Either HttpException (Response a))
runtimeClientRetryTry
toNextEventRequest :: Request -> Request
toNextEventRequest :: Request -> Request
toNextEventRequest = ByteString -> Request -> Request
setRequestPath ByteString
"2018-06-01/runtime/invocation/next"
toEventSuccessRequest :: ToJSON a => BS.ByteString -> a -> Request -> Request
toEventSuccessRequest :: ByteString -> a -> Request -> Request
toEventSuccessRequest ByteString
reqId a
json =
a -> Request -> Request
forall a. ToJSON a => a -> Request -> Request
setRequestBodyJSON a
json (Request -> Request) -> (Request -> Request) -> Request -> Request
forall b c a. (b -> c) -> (a -> b) -> a -> c
.
ByteString -> Request -> Request
setRequestMethod ByteString
"POST" (Request -> Request) -> (Request -> Request) -> Request -> Request
forall b c a. (b -> c) -> (a -> b) -> a -> c
.
ByteString -> Request -> Request
setRequestPath ([ByteString] -> ByteString
BS.concat [ByteString
"2018-06-01/runtime/invocation/", ByteString
reqId, ByteString
"/response"])
toBaseErrorRequest :: String -> Request -> Request
toBaseErrorRequest :: String -> Request -> Request
toBaseErrorRequest String
e =
ByteString -> Request -> Request
setRequestBodyLBS (LambdaError -> ByteString
forall a. ToJSON a => a -> ByteString
encode (LambdaError :: String -> String -> [String] -> LambdaError
LambdaError { $sel:errorMessage:LambdaError :: String
errorMessage = String
e, $sel:stackTrace:LambdaError :: [String]
stackTrace = [], $sel:errorType:LambdaError :: String
errorType = String
"User"}))
(Request -> Request) -> (Request -> Request) -> Request -> Request
forall b c a. (b -> c) -> (a -> b) -> a -> c
. HeaderName -> [ByteString] -> Request -> Request
setRequestHeader HeaderName
"Content-Type" [ByteString
"application/vnd.aws.lambda.error+json"]
(Request -> Request) -> (Request -> Request) -> Request -> Request
forall b c a. (b -> c) -> (a -> b) -> a -> c
. ByteString -> Request -> Request
setRequestMethod ByteString
"POST"
(Request -> Request) -> (Request -> Request) -> Request -> Request
forall b c a. (b -> c) -> (a -> b) -> a -> c
. Request -> Request
setRequestCheckStatus
toEventErrorRequest :: BS.ByteString -> String -> Request -> Request
toEventErrorRequest :: ByteString -> String -> Request -> Request
toEventErrorRequest ByteString
reqId String
e =
ByteString -> Request -> Request
setRequestPath ([ByteString] -> ByteString
BS.concat [ByteString
"2018-06-01/runtime/invocation/", ByteString
reqId, ByteString
"/error"]) (Request -> Request) -> (Request -> Request) -> Request -> Request
forall b c a. (b -> c) -> (a -> b) -> a -> c
. String -> Request -> Request
toBaseErrorRequest String
e
toInitErrorRequest :: String -> Request -> Request
toInitErrorRequest :: String -> Request -> Request
toInitErrorRequest String
e =
ByteString -> Request -> Request
setRequestPath ByteString
"2018-06-01/runtime/init/error" (Request -> Request) -> (Request -> Request) -> Request -> Request
forall b c a. (b -> c) -> (a -> b) -> a -> c
. String -> Request -> Request
toBaseErrorRequest String
e