add hash field to ResultTx (/tx and /tx_search endpoints) (#1374)

Refs #1367

CHANGELOG.md

@@ -25,6 +25,11 @@ BUG FIXES:
 - Graceful handling/recovery for apps that have non-determinism or fail to halt
 - Graceful handling/recovery for violations of safety, or liveness
 
+## 0.17.2 (TBD)
+
+IMPROVEMENTS:
+- [rpc] `/tx` and `/tx_search` responses now include the transaction hash
+
 ## 0.17.1 (March 27th, 2018)
 
 BUG FIXES:

rpc/client/rpc_test.go

@@ -253,13 +253,11 @@ func TestBroadcastTxCommit(t *testing.T) {
 }
 
 func TestTx(t *testing.T) {
-	assert, require := assert.New(t), require.New(t)
-
 	// first we broadcast a tx
 	c := getHTTPClient()
 	_, _, tx := MakeTxKV()
 	bres, err := c.BroadcastTxCommit(tx)
-	require.Nil(err, "%+v", err)
+	require.Nil(t, err, "%+v", err)
 
 	txHeight := bres.Height
 	txHash := bres.Hash
@@ -289,18 +287,19 @@ func TestTx(t *testing.T) {
 			ptx, err := c.Tx(tc.hash, tc.prove)
 
 			if !tc.valid {
-				require.NotNil(err)
+				require.NotNil(t, err)
 			} else {
-				require.Nil(err, "%+v", err)
-				assert.EqualValues(txHeight, ptx.Height)
-				assert.EqualValues(tx, ptx.Tx)
-				assert.Zero(ptx.Index)
-				assert.True(ptx.TxResult.IsOK())
+				require.Nil(t, err, "%+v", err)
+				assert.EqualValues(t, txHeight, ptx.Height)
+				assert.EqualValues(t, tx, ptx.Tx)
+				assert.Zero(t, ptx.Index)
+				assert.True(t, ptx.TxResult.IsOK())
+				assert.EqualValues(t, txHash, ptx.Hash)
 
 				// time to verify the proof
 				proof := ptx.Proof
-				if tc.prove && assert.EqualValues(tx, proof.Data) {
-					assert.True(proof.Proof.Verify(proof.Index, proof.Total, txHash, proof.RootHash))
+				if tc.prove && assert.EqualValues(t, tx, proof.Data) {
+					assert.True(t, proof.Proof.Verify(proof.Index, proof.Total, txHash, proof.RootHash))
 				}
 			}
 		}
@@ -333,6 +332,7 @@ func TestTxSearch(t *testing.T) {
 		assert.EqualValues(t, tx, ptx.Tx)
 		assert.Zero(t, ptx.Index)
 		assert.True(t, ptx.TxResult.IsOK())
+		assert.EqualValues(t, txHash, ptx.Hash)
 
 		// time to verify the proof
 		proof := ptx.Proof

rpc/core/tx.go

@@ -44,7 +44,8 @@ import (
 // 			"code": 0
 // 		},
 // 		"index": 0,
-// 		"height": 52
+// 		"height": 52,
+//		"hash": "2B8EC32BA2579B3B8606E42C06DE2F7AFA2556EF"
 // 	},
 // 	"id": "",
 // 	"jsonrpc": "2.0"
@@ -67,6 +68,7 @@ import (
 // - `tx_result`: the `abci.Result` object
 // - `index`: `int` - index of the transaction
 // - `height`: `int` - height of the block where this transaction was in
+// - `hash`: `[]byte` - hash of the transaction
 func Tx(hash []byte, prove bool) (*ctypes.ResultTx, error) {
 
 	// if index is disabled, return error
@@ -93,6 +95,7 @@ func Tx(hash []byte, prove bool) (*ctypes.ResultTx, error) {
 	}
 
 	return &ctypes.ResultTx{
+		Hash:     hash,
 		Height:   height,
 		Index:    uint32(index),
 		TxResult: r.Result,
@@ -137,7 +140,8 @@ func Tx(hash []byte, prove bool) (*ctypes.ResultTx, error) {
 //       "tx": "mvZHHa7HhZ4aRT0xMDA=",
 //       "tx_result": {},
 //       "index": 31,
-//       "height": 12
+//       "height": 12,
+//       "hash": "2B8EC32BA2579B3B8606E42C06DE2F7AFA2556EF"
 //     }
 //   ],
 //   "id": "",
@@ -161,6 +165,7 @@ func Tx(hash []byte, prove bool) (*ctypes.ResultTx, error) {
 // - `tx_result`: the `abci.Result` object
 // - `index`: `int` - index of the transaction
 // - `height`: `int` - height of the block where this transaction was in
+// - `hash`: `[]byte` - hash of the transaction
 func TxSearch(query string, prove bool) ([]*ctypes.ResultTx, error) {
 	// if index is disabled, return error
 	if _, ok := txIndexer.(*null.TxIndex); ok {
@@ -191,6 +196,7 @@ func TxSearch(query string, prove bool) ([]*ctypes.ResultTx, error) {
 		}
 
 		apiResults[i] = &ctypes.ResultTx{
+			Hash:     r.Tx.Hash(),
 			Height:   height,
 			Index:    index,
 			TxResult: r.Result,

rpc/core/types/responses.go

@@ -123,6 +123,7 @@ type ResultBroadcastTxCommit struct {
 }
 
 type ResultTx struct {
+	Hash     cmn.HexBytes           `json:"hash"`
 	Height   int64                  `json:"height"`
 	Index    uint32                 `json:"index"`
 	TxResult abci.ResponseDeliverTx `json:"tx_result"`