From 5cb57d3eaa132fa44f00542f6440fe1cc8661d43 Mon Sep 17 00:00:00 2001
From: Jae Kwon <jkwon.work@gmail.com>
Date: Sun, 29 Mar 2015 18:43:27 -0700
Subject: [PATCH] Use BlockCache for RPC/mempool and added TxId() TxId() uses
 signbytes

---
 .gitignore                | 1 +
 mempool/mempool.go        | 4 ++++
 rpc/core/accounts.go      | 4 ++--
 rpc/core/mempool.go       | 3 +--
 rpc/test/json_rpc_test.go | 6 +++---
 types/tx.go               | 7 +++++++
 6 files changed, 18 insertions(+), 7 deletions(-)

diff --git a/.gitignore b/.gitignore
index c4760c4f6..eba2cac3f 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,3 +3,4 @@
 .bak
 tendermint
 .DS_Store
+rpc/test/.tendermint
diff --git a/mempool/mempool.go b/mempool/mempool.go
index 28e3ab708..819198778 100644
--- a/mempool/mempool.go
+++ b/mempool/mempool.go
@@ -34,6 +34,10 @@ func (mem *Mempool) GetState() *sm.State {
 	return mem.state
 }
 
+func (mem *Mempool) GetCache() *sm.BlockCache {
+	return mem.cache
+}
+
 // Apply tx to the state and remember it.
 func (mem *Mempool) AddTx(tx types.Tx) (err error) {
 	mem.mtx.Lock()
diff --git a/rpc/core/accounts.go b/rpc/core/accounts.go
index 84ffc2ee4..6949ab861 100644
--- a/rpc/core/accounts.go
+++ b/rpc/core/accounts.go
@@ -13,8 +13,8 @@ func GenPrivAccount() (*ResponseGenPrivAccount, error) {
 //-----------------------------------------------------------------------------
 
 func GetAccount(address []byte) (*ResponseGetAccount, error) {
-	state := consensusState.GetState()
-	return &ResponseGetAccount{state.GetAccount(address)}, nil
+	cache := mempoolReactor.Mempool.GetCache()
+	return &ResponseGetAccount{cache.GetAccount(address)}, nil
 }
 
 //-----------------------------------------------------------------------------
diff --git a/rpc/core/mempool.go b/rpc/core/mempool.go
index 3ff1a85ea..070d6e40d 100644
--- a/rpc/core/mempool.go
+++ b/rpc/core/mempool.go
@@ -3,7 +3,6 @@ package core
 import (
 	"fmt"
 	. "github.com/tendermint/tendermint/common"
-	"github.com/tendermint/tendermint/merkle"
 	"github.com/tendermint/tendermint/state"
 	"github.com/tendermint/tendermint/types"
 )
@@ -24,7 +23,7 @@ func BroadcastTx(tx types.Tx) (*ResponseBroadcastTx, error) {
 		return nil, fmt.Errorf("Error broadcasting transaction: %v", err)
 	}
 
-	txHash := merkle.HashFromBinary(tx)
+	txHash := types.TxId(tx)
 	var createsContract uint8
 	var contractAddr []byte
 	// check if creates new contract
diff --git a/rpc/test/json_rpc_test.go b/rpc/test/json_rpc_test.go
index 62f9c60bb..3b857f24e 100644
--- a/rpc/test/json_rpc_test.go
+++ b/rpc/test/json_rpc_test.go
@@ -6,8 +6,8 @@ import (
 	"encoding/json"
 	"fmt"
 	"github.com/tendermint/tendermint/binary"
+	. "github.com/tendermint/tendermint/common"
 	"github.com/tendermint/tendermint/config"
-	"github.com/tendermint/tendermint/merkle"
 	"github.com/tendermint/tendermint/rpc"
 	"github.com/tendermint/tendermint/rpc/core"
 	"github.com/tendermint/tendermint/types"
@@ -161,8 +161,8 @@ func TestJSONBroadcastTx(t *testing.T) {
 	}
 	tx2 := txs[mempoolCount].(*types.SendTx)
 	mempoolCount += 1
-	if bytes.Compare(merkle.HashFromBinary(tx), merkle.HashFromBinary(tx2)) != 0 {
-		t.Fatal("inconsistent hashes for mempool tx and sent tx")
+	if bytes.Compare(types.TxId(tx), types.TxId(tx2)) != 0 {
+		t.Fatal(Fmt("inconsistent hashes for mempool tx and sent tx: %v vs %v", tx, tx2))
 	}
 
 }
diff --git a/types/tx.go b/types/tx.go
index 1df6f6be1..31af05b7a 100644
--- a/types/tx.go
+++ b/types/tx.go
@@ -254,3 +254,10 @@ func (tx *DupeoutTx) WriteSignBytes(w io.Writer, n *int64, err *error) {
 func (tx *DupeoutTx) String() string {
 	return Fmt("DupeoutTx{%X,%v,%v}", tx.Address, tx.VoteA, tx.VoteB)
 }
+
+//-----------------------------------------------------------------------------
+
+func TxId(tx Tx) []byte {
+	signBytes := account.SignBytes(tx)
+	return binary.BinaryRipemd160(signBytes)
+}