From 9d2671dc19bdc46d1f0fc976813cb9d63e34c71e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Roman=20Smr=C5=BE?= <roman.smrz@seznam.cz>
Date: Fri, 23 Feb 2024 22:21:51 +0100
Subject: Test message service for sending arbitrary data

---
 main/Test.hs         | 16 ++++++++++++++++
 main/Test/Service.hs | 36 ++++++++++++++++++++++++++++++++++++
 2 files changed, 52 insertions(+)
 create mode 100644 main/Test/Service.hs

(limited to 'main')

diff --git a/main/Test.hs b/main/Test.hs
index 8a205ea..991cf85 100644
--- a/main/Test.hs
+++ b/main/Test.hs
@@ -43,6 +43,8 @@ import Erebos.Storage.Internal (unsafeStoreRawBytes)
 import Erebos.Storage.Merge
 import Erebos.Sync
 
+import Test.Service
+
 
 data TestState = TestState
     { tsHead :: Maybe (Head LocalState)
@@ -243,6 +245,7 @@ commands = map (T.pack *** id)
     , ("start-server", cmdStartServer)
     , ("stop-server", cmdStopServer)
     , ("peer-add", cmdPeerAdd)
+    , ("test-message-send", cmdTestMessageSend)
     , ("shared-state-get", cmdSharedStateGet)
     , ("shared-state-wait", cmdSharedStateWait)
     , ("watch-local-identity", cmdWatchLocalIdentity)
@@ -340,6 +343,10 @@ cmdStartServer = do
         , someServiceAttr $ pairingAttributes (Proxy @ContactService) out rsPeers "contact"
         , someServiceAttr $ directMessageAttributes out
         , someService @SyncService Proxy
+        , someServiceAttr $ (defaultServiceAttributes Proxy)
+            { testMessageReceived = \otype len sref ->
+                liftIO $ outLine out $ unwords ["test-message-received", otype, len, sref]
+            }
         ]
 
     rsPeerThread <- liftIO $ forkIO $ void $ forever $ do
@@ -378,6 +385,15 @@ cmdPeerAdd = do
     addr:_ <- liftIO $ getAddrInfo (Just $ defaultHints { addrSocketType = Datagram }) (Just host) (Just port)
     void $ liftIO $ serverPeer rsServer (addrAddress addr)
 
+cmdTestMessageSend :: Command
+cmdTestMessageSend = do
+    [spidx, tref] <- asks tiParams
+    st <- asks tiStorage
+    Just ref <- liftIO $ readRef st (encodeUtf8 tref)
+    peer <- getPeer spidx
+    sendToPeer peer $ TestMessage $ wrappedLoad ref
+    cmdOut "test-message-send done"
+
 cmdSharedStateGet :: Command
 cmdSharedStateGet = do
     h <- getHead
diff --git a/main/Test/Service.hs b/main/Test/Service.hs
new file mode 100644
index 0000000..1018e0d
--- /dev/null
+++ b/main/Test/Service.hs
@@ -0,0 +1,36 @@
+module Test.Service (
+    TestMessage(..),
+    TestMessageAttributes(..),
+) where
+
+import Control.Monad.Reader
+
+import Data.ByteString.Lazy.Char8 qualified as BL
+
+import Erebos.Network
+import Erebos.Service
+import Erebos.Storage
+
+data TestMessage = TestMessage (Stored Object)
+
+data TestMessageAttributes = TestMessageAttributes
+    { testMessageReceived :: String -> String -> String -> ServiceHandler TestMessage ()
+    }
+
+instance Storable TestMessage where
+    store' (TestMessage msg) = store' msg
+    load' = TestMessage <$> load'
+
+instance Service TestMessage where
+    serviceID _ = mkServiceID "cb46b92c-9203-4694-8370-8742d8ac9dc8"
+
+    type ServiceAttributes TestMessage = TestMessageAttributes
+    defaultServiceAttributes _ = TestMessageAttributes (\_ _ _ -> return ())
+
+    serviceHandler smsg = do
+        let TestMessage sobj = fromStored smsg
+        case map BL.unpack $ BL.words $ BL.takeWhile (/='\n') $ serializeObject $ fromStored sobj of
+            [otype, len] -> do
+                cb <- asks $ testMessageReceived . svcAttributes
+                cb otype len (show $ refDigest $ storedRef sobj)
+            _ -> return ()
-- 
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