wip JsonRpc response

[pdns-pipe-nmc.git] / Data / JsonRpc.hs

diff --git a/Data/JsonRpc.hs b/Data/JsonRpc.hs
index 64d184c72809f778a092cd82cd2ee14df075fadd..9b3ff48965fe47a3731567e70652831aae9e6ba7 100644 (file)
--- a/Data/JsonRpc.hs
+++ b/Data/JsonRpc.hs
@@ -1,39 +1,44 @@
 {-# LANGUAGE OverloadedStrings #-}
 
-module JsonRpc  ( JsonRpcRequestV1
-                , JsonRpcRequestV2
+module JsonRpc  ( JsonRpcVersion(JsonRpcV1, JsonRpcV2)
+                , JsonRpcRequest
                 , JsonRpcNotification
+                , JsonRpcError
                 , JsonRpcResponse
+                , parseJsonRpc
                 ) where
 
 import Data.ByteString.Lazy (ByteString)
 import Control.Applicative ((<$>), (<*>), empty)
+import Data.Either
 import Data.Aeson
 
-data JsonRpcRequestV1 = JsonRpcRequestV1 { jrpcReqMethod1  :: ByteString
-                                         , jrpcReqParams1  :: [ByteString]
-                                         , jrpcReqId1      :: ByteString
-                                         } deriving (Show)
-instance ToJSON JsonRpcRequestV1 where
-  toJSON (JsonRpcRequestV1 method params id) =
-    object [ "method"  .= method
-           , "params"  .= params
-           , "id"      .= id ]
-    
-data JsonRpcRequestV2 = JsonRpcRequestV2 { jrpcReqMethod2  :: ByteString
-                                         , jrpcReqParams2  :: [ByteString]
-                                         , jrpcReqId2      :: ByteString
-                                         } deriving (Show)
-instance ToJSON JsonRpcRequestV2 where
-  toJSON (JsonRpcRequestV2 jrpcReqMethod2 jrpcReqParams2 jrpcReqId2) =
-    object [ "jsonrpc" .= toJSON ("2.0" :: ByteString)
-           , "method"  .= jrpcReqMethod2
-           , "params"  .= jrpcReqParams2
-           , "id"      .= jrpcReqId2 ]
-
-data JsonRpcNotification = JsonRpcNotification { jrpcNtfMethod :: ByteString
-                                               , jrpcNtfParams :: [ByteString]
-                                               } deriving (Show)
+data JsonRpcVersion = JsonRpcV1 | JsonRpcV2
+        deriving (Show)
+
+data JsonRpcRequest = JsonRpcRequest { jrpcVersion    :: JsonRpcVersion
+                                     , jrpcReqMethod  :: ByteString
+                                     , jrpcReqParams  :: [ByteString]
+                                     , jrpcReqId      :: ByteString
+                                     } deriving (Show)
+instance ToJSON JsonRpcRequest where
+  toJSON (JsonRpcRequest version method params id) =
+    let l = [ "method" .= method, "params" .= params, "id" .= id ]
+    in case version of
+      JsonRpcV1 -> object l
+      JsonRpcV2 -> object $ ("jsonrpc" .= toJSON ("2.0" :: ByteString)):l
+
+data JsonRpcNotification = JsonRpcNotification
+                                     { jrpcNtfVersion :: JsonRpcVersion
+                                     , jrpcNtfMethod  :: ByteString
+                                     , jrpcNtfParams  :: [ByteString]
+                                     } deriving (Show)
+instance ToJSON JsonRpcNotification where
+  toJSON (JsonRpcNotification version method params) =
+    let l = [ "method" .= method, "params" .= params ]
+    in case version of
+      JsonRpcV1 -> object l
+      JsonRpcV2 -> object $ ("jsonrpc" .= toJSON ("2.0" :: ByteString)):l
 
 data JsonRpcError = JsonRpcError { jrpcErrCode    :: Int
                                  , jrpcErrMessage :: ByteString
@@ -44,3 +49,6 @@ data JsonRpcResponse = JsonRpcResponse { jrpcRspResult :: Maybe Value
                                        , jrpcRspError  :: JsonRpcError
                                        , jrpcRspId     :: ByteString
                                        } deriving (Show)
+
+parseJsonRpc :: ByteString -> Either JsonRpcError JsonRpcResponse
+parseJsonRpc _ = Left $ JsonRpcError (-1) "someerror" Nothing