Print hash of submitted transaction as JSON

Author: smelc

cardano-cli/src/Cardano/CLI/EraBased/Run/Transaction.hs

@@ -75,6 +75,7 @@ import           Data.Maybe (catMaybes, fromMaybe, mapMaybe)
 import           Data.Set (Set)
 import qualified Data.Set as Set
 import qualified Data.Text as Text
+import qualified Data.Text.Encoding as T
 import qualified Data.Text.IO as Text
 import           Data.Type.Equality (TestEquality (..))
 import           GHC.Exts (IsList (..))
@@ -1485,7 +1486,8 @@ runTransactionSubmitCmd
     case res of
       Net.Tx.SubmitSuccess -> do
         liftIO $ Text.putStrLn "Transaction successfully submitted. Transaction hash is:"
-        liftIO $ BS.putStrLn $ serialiseToRawBytesHex (getTxId $ getTxBody tx)
+        let hashText = T.decodeUtf8 $ serialiseToRawBytesHex (getTxId $ getTxBody tx)
+        liftIO $ LBS.putStrLn $ Aeson.encode $ TxIdSubmission hashText
       Net.Tx.SubmitFail reason ->
         case reason of
           TxValidationErrorInCardanoMode err -> left . TxCmdTxSubmitError . Text.pack $ show err

cardano-cli/src/Cardano/CLI/Types/Common.hs

@@ -1,4 +1,5 @@
 {-# LANGUAGE DataKinds #-}
+{-# LANGUAGE DeriveGeneric #-}
 {-# LANGUAGE DerivingStrategies #-}
 {-# LANGUAGE GADTs #-}
 {-# LANGUAGE GeneralisedNewtypeDeriving #-}
@@ -68,6 +69,7 @@ module Cardano.CLI.Types.Common
   , TxBuildOutputOptions (..)
   , TxByronWitnessCount (..)
   , TxFile
+  , TxIdSubmission (..)
   , TxTreasuryDonation (..)
   , TxInCount (..)
   , TxMempoolQuery (..)
@@ -100,8 +102,10 @@ import           Data.Aeson (FromJSON (..), ToJSON (..), object, pairs, (.=))
 import qualified Data.Aeson as Aeson
 import           Data.String (IsString)
 import           Data.Text (Text)
+import qualified Data.Text as T
 import qualified Data.Text as Text
 import           Data.Word (Word64)
+import           GHC.Generics (Generic)
 
 -- | Determines the direction in which the MIR certificate will transfer ADA.
 data TransferDirection
@@ -663,3 +667,12 @@ data PotentiallyCheckedAnchor anchorType anchor
   -- ^ Whether to check the hash or not (CheckHash for checking or TrustHash for not checking)
   }
   deriving (Eq, Show)
+
+-- | Type used for serialization when printing the hash of a transaction
+-- after having submitted it.
+newtype TxIdSubmission = TxIdSubmission {txhash :: T.Text}
+  deriving (Show, Generic)
+
+instance FromJSON TxIdSubmission
+
+instance ToJSON TxIdSubmission