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-rw-r--r--hsm-core/Hsm/Core/Env.hs7
-rw-r--r--hsm-core/Hsm/Core/Fsm.hs9
-rw-r--r--hsm-core/Hsm/Core/Zmq.hs25
-rw-r--r--hsm-core/Hsm/Core/Zmq/Client.hs59
-rw-r--r--hsm-core/Hsm/Core/Zmq/Server.hs25
5 files changed, 45 insertions, 80 deletions
diff --git a/hsm-core/Hsm/Core/Env.hs b/hsm-core/Hsm/Core/Env.hs
index 4e7986f..8ef7464 100644
--- a/hsm-core/Hsm/Core/Env.hs
+++ b/hsm-core/Hsm/Core/Env.hs
@@ -3,9 +3,9 @@ module Hsm.Core.Env
, deriveFromYaml
) where
-import Data.Aeson (FromJSON, Result(Error, Success), Value, fromJSON)
+import Data.Aeson (FromJSON, Result(Error, Success), fromJSON)
import Data.Aeson.Key (fromText)
-import Data.Aeson.KeyMap (KeyMap, (!?))
+import Data.Aeson.KeyMap ((!?))
import Data.Aeson.TH (defaultOptions, deriveFromJSON, rejectUnknownFields)
import Data.Maybe (fromMaybe)
import Data.Text (Text, unpack)
@@ -15,13 +15,10 @@ import Language.Haskell.TH (Dec, Name, Q)
environment :: FromJSON env => Text -> Text -> IO env
environment name = fmap (check . fromJSON . load) . decodeFileThrow . unpack
where
- load :: KeyMap Value -> Value
load keymap =
fromMaybe
(error $ "Service configuration for " <> unpack name <> " not found)")
$ keymap !? fromText name
- --
- check :: Result env -> env
check (Success env) = env
check (Error str) = error str
diff --git a/hsm-core/Hsm/Core/Fsm.hs b/hsm-core/Hsm/Core/Fsm.hs
index 6f9910e..d1c2f5d 100644
--- a/hsm-core/Hsm/Core/Fsm.hs
+++ b/hsm-core/Hsm/Core/Fsm.hs
@@ -39,23 +39,18 @@ fsm ::
-> S.Stream (Eff es) o
fsm = S.mapM (return . fromJust) . S.takeWhile isJust . S.mapM run
where
- exit :: Eff es (Maybe o)
exit = do
logAttention_ "No state returned, exiting FSM"
return Nothing
- --
- push :: FsmResult i o env sta -> Eff es (Maybe o)
push (FsmResult out sta next) = do
put sta
put next
return $ Just out
- --
- run :: i -> Eff es (Maybe o)
run input =
localDomain "fsm" $ do
FsmState name action <- get
- sta <- get
- env <- ask
+ sta <- get @sta
+ env <- ask @env
logTrace_ $ "Entering state " <> name
FsmOutput res logs <- return $ action input env sta
localDomain name $ mapM_ logTup logs
diff --git a/hsm-core/Hsm/Core/Zmq.hs b/hsm-core/Hsm/Core/Zmq.hs
index 8c12133..2f70d48 100644
--- a/hsm-core/Hsm/Core/Zmq.hs
+++ b/hsm-core/Hsm/Core/Zmq.hs
@@ -4,7 +4,6 @@ module Hsm.Core.Zmq
( withSocket
) where
-import Data.Text (Text)
import Effectful (Eff, IOE, (:>))
import Effectful.Log (Log, LogLevel(LogTrace))
import Effectful.Resource (Resource, allocate)
@@ -12,23 +11,19 @@ import Hsm.Core.Log (withLogIO)
import System.ZMQ4 qualified as Z
withSocket ::
- forall t es. (Z.SocketType t, IOE :> es, Log :> es, Resource :> es)
+ (Z.SocketType t, IOE :> es, Log :> es, Resource :> es)
=> t
-> Eff es (Z.Socket t)
withSocket stype = withLogIO >>= bracket
where
- bracket :: (LogLevel -> Text -> IO ()) -> Eff es (Z.Socket t)
bracket logIO = snd . snd <$> allocate acquire release
where
- acquire :: IO (Z.Context, Z.Socket t)
- acquire = do
- logIO LogTrace "Acquiring ZMQ context"
- cont <- Z.context
- sock <- Z.socket cont stype
- return (cont, sock)
- --
- release :: (Z.Context, Z.Socket t) -> IO ()
- release (cont, sock) = do
- logIO LogTrace "Releasing ZMQ context"
- Z.close sock
- Z.shutdown cont
+ acquire =
+ logIO LogTrace "Acquiring ZMQ context" >> do
+ cont <- Z.context
+ sock <- Z.socket cont stype
+ return (cont, sock)
+ release (cont, sock) =
+ logIO LogTrace "Releasing ZMQ context" >> do
+ Z.close sock
+ Z.shutdown cont
diff --git a/hsm-core/Hsm/Core/Zmq/Client.hs b/hsm-core/Hsm/Core/Zmq/Client.hs
index 793841e..6093e54 100644
--- a/hsm-core/Hsm/Core/Zmq/Client.hs
+++ b/hsm-core/Hsm/Core/Zmq/Client.hs
@@ -11,6 +11,7 @@ module Hsm.Core.Zmq.Client
, runClient
) where
+import Control.Monad (forM_)
import Control.Monad.Loops (whileM)
import Data.Binary (Binary)
import Data.Text (Text, pack, unpack)
@@ -50,30 +51,23 @@ receiver = do
<> pack (show $ body @a message)
return $ body message
-receive ::
- forall es a. (Log :> es, Client :> es, Binary a, Show a)
- => Stream (Eff es) a
+receive :: (Log :> es, Client :> es, Binary a, Show a) => Stream (Eff es) a
receive = repeatM receiver
-poll ::
- forall es a. (Log :> es, Client :> es, Binary a, Show a)
- => Stream (Eff es) [a]
-poll = repeatM poller
+poll :: (Log :> es, Client :> es, Binary a, Show a) => Stream (Eff es) [a]
+poll =
+ repeatM $ do
+ ms <- whileM newMsg receiver
+ localDomain domain
+ $ localDomain "poller"
+ $ logTrace_
+ $ pack (show $ length ms) <> " new message(s) on queue"
+ return ms
where
- newMsg :: Eff es Bool
newMsg = do
Client sock <- E.getStaticRep
peek <- E.unsafeEff_ $ Z.poll 0 [Z.Sock sock [Z.In] Nothing]
return $ peek /= [[]]
- --
- poller :: Eff es [a]
- poller = do
- ms <- whileM newMsg receiver
- localDomain domain
- $ localDomain "poller"
- $ logTrace_
- $ pack (show $ length ms) <> " new message(s) on queue"
- return ms
runClient ::
forall env es a.
@@ -86,23 +80,14 @@ runClient ::
)
=> Eff (Client : es) a
-> Eff es a
-runClient action = withSocket Z.Sub >>= run
- where
- run :: Z.Socket Z.Sub -> Eff es a
- run sock = E.evalStaticRep (Client sock) $ initialize >> action
- where
- connect :: Text -> Eff (Client : es) ()
- connect = E.unsafeEff_ . Z.connect sock . unpack
- --
- subscribe :: Text -> Eff (Client : es) ()
- subscribe = E.unsafeEff_ . Z.subscribe sock . encodeUtf8
- --
- initialize :: Eff (Client : es) ()
- initialize =
- localDomain domain $ do
- logInfo_ "Initializing ZMQ client"
- env <- ask @env
- mapM_ connect env.subEps
- mapM_ subscribe env.topics
- logTrace_ $ "Listening to " <> pack (show env.subEps)
- logTrace_ $ "Subscribed to " <> pack (show env.topics)
+runClient action =
+ withSocket Z.Sub >>= \sock ->
+ E.evalStaticRep (Client sock) $ do
+ localDomain domain $ do
+ logInfo_ "Initializing ZMQ client"
+ env <- ask @env
+ forM_ env.subEps $ E.unsafeEff_ . Z.connect sock . unpack
+ forM_ env.topics $ E.unsafeEff_ . Z.subscribe sock . encodeUtf8
+ logTrace_ $ "Listening to " <> pack (show env.subEps)
+ logTrace_ $ "Subscribed to " <> pack (show env.topics)
+ action
diff --git a/hsm-core/Hsm/Core/Zmq/Server.hs b/hsm-core/Hsm/Core/Zmq/Server.hs
index 5663cd8..2e9217b 100644
--- a/hsm-core/Hsm/Core/Zmq/Server.hs
+++ b/hsm-core/Hsm/Core/Zmq/Server.hs
@@ -47,7 +47,6 @@ send ::
-> Eff es ()
send = S.fold S.drain . S.mapM sender
where
- sender :: a -> Eff es ()
sender payload = do
Server sock <- E.getStaticRep
env <- ask @env
@@ -64,18 +63,12 @@ runServer ::
)
=> Eff (Server : es) a
-> Eff es a
-runServer action = withSocket Z.Pub >>= run
- where
- run :: Z.Socket Z.Pub -> Eff es a
- run sock = E.evalStaticRep (Server sock) $ initialize >> action
- where
- bind :: Text -> Eff (Server : es) ()
- bind = E.unsafeEff_ . Z.bind sock . unpack
- --
- initialize :: Eff (Server : es) ()
- initialize =
- localDomain domain $ do
- logInfo_ "Initializing ZMQ server"
- env <- ask @env
- bind env.pubEp
- logTrace_ $ "Publishing to " <> env.pubEp
+runServer action =
+ withSocket Z.Pub >>= \sock ->
+ E.evalStaticRep (Server sock) $ do
+ localDomain domain $ do
+ logInfo_ "Initializing ZMQ server"
+ env <- ask @env
+ E.unsafeEff_ $ Z.bind sock $ unpack env.pubEp
+ logTrace_ $ "Publishing to " <> env.pubEp
+ action
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