module OpenTelemetry.Resource.Service.Detector where
import qualified Data.Text as T
import OpenTelemetry.Resource.Service
import System.Environment (getProgName, lookupEnv)
detectService :: IO Service
detectService :: IO Service
detectService = do
Maybe String
mSvcName <- String -> IO (Maybe String)
lookupEnv String
"OTEL_SERVICE_NAME"
Text
svcName <- case Maybe String
mSvcName of
Maybe String
Nothing -> String -> Text
T.pack (String -> Text) -> (String -> String) -> String -> Text
forall b c a. (b -> c) -> (a -> b) -> a -> c
. (String
"unknown_service:" String -> String -> String
forall a. Semigroup a => a -> a -> a
<>) (String -> Text) -> IO String -> IO Text
forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
<$> IO String
getProgName
Just String
svcName -> Text -> IO Text
forall a. a -> IO a
forall (f :: * -> *) a. Applicative f => a -> f a
pure (Text -> IO Text) -> Text -> IO Text
forall a b. (a -> b) -> a -> b
$ String -> Text
T.pack String
svcName
Service -> IO Service
forall a. a -> IO a
forall (f :: * -> *) a. Applicative f => a -> f a
pure (Service -> IO Service) -> Service -> IO Service
forall a b. (a -> b) -> a -> b
$
Service
{ serviceName :: Text
serviceName = Text
svcName
, serviceNamespace :: Maybe Text
serviceNamespace = Maybe Text
forall a. Maybe a
Nothing
, serviceInstanceId :: Maybe Text
serviceInstanceId = Maybe Text
forall a. Maybe a
Nothing
, serviceVersion :: Maybe Text
serviceVersion = Maybe Text
forall a. Maybe a
Nothing
}