add more options to debug_traceTransaction

nimbus/rpc/debug.nim

@@ -18,6 +18,7 @@ type
     disableStorage: Option[bool]
     disableMemory: Option[bool]
     disableStack: Option[bool]
+    disableState: Option[bool]
 
 proc isTrue(x: Option[bool]): bool =
   result = x.isSome and x.get() == true
@@ -40,6 +41,7 @@ proc setupDebugRpc*(chainDB: BaseChainDB, rpcsrv: RpcServer) =
     ## * disableStorage: BOOL. Setting this to true will disable storage capture (default = false).
     ## * disableMemory: BOOL. Setting this to true will disable memory capture (default = false).
     ## * disableStack: BOOL. Setting this to true will disable stack capture (default = false).
+    ## * disableState: BOOL. Setting this to true will disable state trie capture (default = false).
     let
       txHash = toHash(data)
       txDetails = chainDB.getTransactionKey(txHash)
@@ -55,5 +57,6 @@ proc setupDebugRpc*(chainDB: BaseChainDB, rpcsrv: RpcServer) =
       if opts.disableStorage.isTrue: flags.incl TracerFlags.DisableStorage
       if opts.disableMemory.isTrue: flags.incl TracerFlags.DisableMemory
       if opts.disableStack.isTrue: flags.incl TracerFlags.DisableStack
+      if opts.disableState.isTrue: flags.incl TracerFlags.DisableState
 
     traceTransaction(chainDB, blockHeader, blockBody, txDetails.index, flags)

nimbus/tracer.nim

@@ -13,7 +13,7 @@ proc traceTransaction*(db: BaseChainDB, header: BlockHeader,
                        body: BlockBody, txIndex: int, tracerFlags: set[TracerFlags]): JsonNode =
   let
     parent = db.getParentHeader(header)
-    # we add a memory layer between backend/upper layer db
+    # we add a memory layer between backend/lower layer db
     # and capture state db snapshot during transaction execution
     memoryDB = newMemoryDB()
     captureDB = newCaptureDB(db.db, memoryDB)
@@ -40,7 +40,8 @@ proc traceTransaction*(db: BaseChainDB, header: BlockHeader,
   result["gas"] = %gasUsed
 
   # now we dump captured state db
-  var n = newJObject()
-  for k, v in pairsInMemoryDB(memoryDB):
-    n[k.prefixHex] = %v.prefixHex
-  result["snapshot"] = n
+  if TracerFlags.DisableState notin tracerFlags:
+    var n = newJObject()
+    for k, v in pairsInMemoryDB(memoryDB):
+      n[k.prefixHex] = %v.prefixHex
+    result["state"] = n

nimbus/vm_types.nim

@@ -32,6 +32,7 @@ type
     DisableStorage
     DisableMemory
     DisableStack
+    DisableState
 
   TransactionTracer* = object
     trace*: JsonNode