Contract hist (#84)

Add ability to query contract historical state
2017-12-04 12:54:33 -06:00
parent 7501fe70a7
commit 71de8e970d
8 changed files with 143 additions and 44 deletions
@@ -1,10 +1,12 @@
 package core

+import "math/big"
+
 type Blockchain interface {
 	GetBlockByNumber(blockNumber int64) Block
 	SubscribeToBlocks(blocks chan Block)
 	StartListening()
 	StopListening()
 	GetContract(contractHash string) (Contract, error)
-	GetAttribute(contract Contract, attributeName string) (interface{}, error)
+	GetAttribute(contract Contract, attributeName string, blockNumber *big.Int) (interface{}, error)
 }