rpc: Expose block height of wallet transactions

Author: promag

doc/release-notes-17437.md

@@ -0,0 +1,5 @@
+Low-level RPC Changes
+===
+
+- The RPC gettransaction, listtransactions and listsinceblock responses now also
+includes the height of the block that contains the wallet transaction, if any.

src/wallet/rpcwallet.cpp

@@ -142,6 +142,7 @@ static void WalletTxToJSON(interfaces::Chain& chain, interfaces::Chain::Lock& lo
     if (confirms > 0)
     {
         entry.pushKV("blockhash", wtx.m_confirm.hashBlock.GetHex());
+        entry.pushKV("blockheight", wtx.m_confirm.block_height);
         entry.pushKV("blockindex", wtx.m_confirm.nIndex);
         int64_t block_time;
         bool found_block = chain.findBlock(wtx.m_confirm.hashBlock, nullptr /* block */, &block_time);
@@ -1367,6 +1368,7 @@ static const std::string TransactionDescriptionString()
            "    \"generated\": xxx,                          (bool) Only present if transaction only input is a coinbase one.\n"
            "    \"trusted\": xxx,                            (bool) Only present if we consider transaction to be trusted and so safe to spend from.\n"
            "    \"blockhash\": \"hashvalue\",                  (string) The block hash containing the transaction.\n"
+           "    \"blockheight\": n,                          (numeric) The block height containing the transaction.\n"
            "    \"blockindex\": n,                           (numeric) The index of the transaction in the block that includes it.\n"
            "    \"blocktime\": xxx,                          (numeric) The block time in seconds since epoch (1 Jan 1970 GMT).\n"
            "    \"txid\": \"transactionid\",                   (string) The transaction id.\n"

test/functional/wallet_listsinceblock.py

@@ -40,13 +40,15 @@ def run_test(self):
     def test_no_blockhash(self):
         txid = self.nodes[2].sendtoaddress(self.nodes[0].getnewaddress(), 1)
         blockhash, = self.nodes[2].generate(1)
+        blockheight = self.nodes[2].getblockheader(blockhash)['height']
         self.sync_all()
 
         txs = self.nodes[0].listtransactions()
         assert_array_result(txs, {"txid": txid}, {
             "category": "receive",
             "amount": 1,
             "blockhash": blockhash,
+            "blockheight": blockheight,
             "confirmations": 1,
         })
         assert_equal(
@@ -276,7 +278,8 @@ def test_double_send(self):
         self.sync_all()
 
         # gettransaction should work for txid1
-        self.nodes[0].gettransaction(txid1)
+        tx1 = self.nodes[0].gettransaction(txid1)
+        assert_equal(tx1['blockheight'], self.nodes[0].getblockheader(tx1['blockhash'])['height'])
 
         # listsinceblock(lastblockhash) should now include txid1 in transactions
         # as well as in removed

test/functional/wallet_listtransactions.py

@@ -40,14 +40,15 @@ def run_test(self):
                             {"txid": txid},
                             {"category": "receive", "amount": Decimal("0.1"), "confirmations": 0})
         # mine a block, confirmations should change:
-        self.nodes[0].generate(1)
+        blockhash = self.nodes[0].generate(1)[0]
+        blockheight = self.nodes[0].getblockheader(blockhash)['height']
         self.sync_all()
         assert_array_result(self.nodes[0].listtransactions(),
                             {"txid": txid},
-                            {"category": "send", "amount": Decimal("-0.1"), "confirmations": 1})
+                            {"category": "send", "amount": Decimal("-0.1"), "confirmations": 1, "blockhash": blockhash, "blockheight": blockheight})
         assert_array_result(self.nodes[1].listtransactions(),
                             {"txid": txid},
-                            {"category": "receive", "amount": Decimal("0.1"), "confirmations": 1})
+                            {"category": "receive", "amount": Decimal("0.1"), "confirmations": 1, "blockhash": blockhash, "blockheight": blockheight})
 
         # send-to-self:
         txid = self.nodes[0].sendtoaddress(self.nodes[0].getnewaddress(), 0.2)