add service monad (with built-in logging)

1 files changed, 13 insertions, 0 deletions

diff --git a/lib/Server/Util.hs b/lib/Server/Util.hs
new file mode 100644
index 0000000..45c2477
--- /dev/null
+++ b/lib/Server/Util.hs
@@ -0,0 +1,13 @@
+
+
+-- | mostly the monad the service runs in
+module Server.Util (Service, ServiceM, runService) where
+
+import           Control.Monad.Logger (LoggingT, runStderrLoggingT)
+import           Servant              (Handler, ServerT)
+
+type ServiceM  = LoggingT Handler
+type Service api = ServerT api ServiceM
+
+runService :: ServiceM a -> Handler a
+runService = runStderrLoggingT