RPC/Mining: Restore API compatibility for prioritisetransaction

Breaking API serves no purpose other than to be incompatible with older versions and other implementations that do support priority

src/rpc/client.cpp

@@ -112,7 +112,8 @@ static const CRPCConvertParam vRPCConvertParams[] =
     { "estimaterawfee", 0, "nblocks" },
     { "estimaterawfee", 1, "threshold" },
     { "estimaterawfee", 2, "horizon" },
-    { "prioritisetransaction", 1, "fee_delta" },
+    { "prioritisetransaction", 1, "priority_delta" },
+    { "prioritisetransaction", 2, "fee_delta" },
     { "setban", 2, "bantime" },
     { "setban", 3, "absolute" },
     { "setnetworkactive", 0, "state" },

src/rpc/mining.cpp

@@ -257,26 +257,31 @@ UniValue getmininginfo(const JSONRPCRequest& request)
 // NOTE: Unlike wallet RPC (which use BTC values), mining RPCs follow GBT (BIP 22) in using satoshi amounts
 UniValue prioritisetransaction(const JSONRPCRequest& request)
 {
-    if (request.fHelp || request.params.size() != 2)
+    if (request.fHelp || request.params.size() != 3)
         throw std::runtime_error(
-            "prioritisetransaction <txid> <fee delta>\n"
+            "prioritisetransaction <txid> <priority delta> <fee delta>\n"
             "Accepts the transaction into mined blocks at a higher (or lower) priority\n"
             "\nArguments:\n"
             "1. \"txid\"       (string, required) The transaction id.\n"
-            "2. fee_delta      (numeric, required) The fee value (in satoshis) to add (or subtract, if negative).\n"
+            "2. priority_delta (numeric, optional) Fee-independent priority adjustment. Not supported, so must be zero or null.\n"
+            "3. fee_delta      (numeric, required) The fee value (in satoshis) to add (or subtract, if negative).\n"
             "                  The fee is not actually paid, only the algorithm for selecting transactions into a block\n"
             "                  considers the transaction as it would have paid a higher (or lower) fee.\n"
             "\nResult:\n"
             "true              (boolean) Returns true\n"
             "\nExamples:\n"
-            + HelpExampleCli("prioritisetransaction", "\"txid\" 10000")
-            + HelpExampleRpc("prioritisetransaction", "\"txid\", 10000")
+            + HelpExampleCli("prioritisetransaction", "\"txid\" 0.0 10000")
+            + HelpExampleRpc("prioritisetransaction", "\"txid\", 0.0, 10000")
         );
 
     LOCK(cs_main);
 
     uint256 hash = ParseHashStr(request.params[0].get_str(), "txid");
-    CAmount nAmount = request.params[1].get_int64();
+    CAmount nAmount = request.params[2].get_int64();
+
+    if (!(request.params[1].isNull() || request.params[1].get_real() == 0)) {
+        throw JSONRPCError(RPC_INVALID_PARAMETER, "Priority is not supported, and adjustment thereof must be zero.");
+    }
 
     mempool.PrioritiseTransaction(hash, nAmount);
     return true;
@@ -959,7 +964,7 @@ static const CRPCCommand commands[] =
   //  --------------------- ------------------------  -----------------------  ----------
     { "mining",             "getnetworkhashps",       &getnetworkhashps,       true,  {"nblocks","height"} },
     { "mining",             "getmininginfo",          &getmininginfo,          true,  {} },
-    { "mining",             "prioritisetransaction",  &prioritisetransaction,  true,  {"txid","fee_delta"} },
+    { "mining",             "prioritisetransaction",  &prioritisetransaction,  true,  {"txid","priority_delta","fee_delta"} },
     { "mining",             "getblocktemplate",       &getblocktemplate,       true,  {"template_request"} },
     { "mining",             "submitblock",            &submitblock,            true,  {"hexdata","parameters"} },
 

test/functional/bip68-sequence.py

@@ -241,7 +241,7 @@ class BIP68Test(BitcoinTestFramework):
 
         # Now mine some blocks, but make sure tx2 doesn't get mined.
         # Use prioritisetransaction to lower the effective feerate to 0
-        self.nodes[0].prioritisetransaction(tx2.hash, int(-self.relayfee*COIN))
+        self.nodes[0].prioritisetransaction(txid=tx2.hash, fee_delta=int(-self.relayfee*COIN))
         cur_time = int(time.time())
         for i in range(10):
             self.nodes[0].setmocktime(cur_time + 600)
@@ -254,7 +254,7 @@ class BIP68Test(BitcoinTestFramework):
         test_nonzero_locks(tx2, self.nodes[0], self.relayfee, use_height_lock=False)
 
         # Mine tx2, and then try again
-        self.nodes[0].prioritisetransaction(tx2.hash, int(self.relayfee*COIN))
+        self.nodes[0].prioritisetransaction(txid=tx2.hash, fee_delta=int(self.relayfee*COIN))
 
         # Advance the time on the node so that we can test timelocks
         self.nodes[0].setmocktime(cur_time+600)

test/functional/mempool_packages.py

@@ -96,7 +96,7 @@ class MempoolPackagesTest(BitcoinTestFramework):
 
         # Check that ancestor modified fees includes fee deltas from
         # prioritisetransaction
-        self.nodes[0].prioritisetransaction(chain[0], 1000)
+        self.nodes[0].prioritisetransaction(txid=chain[0], fee_delta=1000)
         mempool = self.nodes[0].getrawmempool(True)
         ancestor_fees = 0
         for x in chain:
@@ -104,11 +104,11 @@ class MempoolPackagesTest(BitcoinTestFramework):
             assert_equal(mempool[x]['ancestorfees'], ancestor_fees * COIN + 1000)
         
         # Undo the prioritisetransaction for later tests
-        self.nodes[0].prioritisetransaction(chain[0], -1000)
+        self.nodes[0].prioritisetransaction(txid=chain[0], fee_delta=-1000)
 
         # Check that descendant modified fees includes fee deltas from
         # prioritisetransaction
-        self.nodes[0].prioritisetransaction(chain[-1], 1000)
+        self.nodes[0].prioritisetransaction(txid=chain[-1], fee_delta=1000)
         mempool = self.nodes[0].getrawmempool(True)
 
         descendant_fees = 0
@@ -126,7 +126,7 @@ class MempoolPackagesTest(BitcoinTestFramework):
         assert_equal(len(self.nodes[0].getrawmempool()), 0)
         # Prioritise a transaction that has been mined, then add it back to the
         # mempool by using invalidateblock.
-        self.nodes[0].prioritisetransaction(chain[-1], 2000)
+        self.nodes[0].prioritisetransaction(txid=chain[-1], fee_delta=2000)
         self.nodes[0].invalidateblock(self.nodes[0].getbestblockhash())
         # Keep node1's tip synced with node0
         self.nodes[1].invalidateblock(self.nodes[1].getbestblockhash())

test/functional/prioritise_transaction.py

@@ -46,7 +46,7 @@ class PrioritiseTransactionTest(BitcoinTestFramework):
 
         # add a fee delta to something in the cheapest bucket and make sure it gets mined
         # also check that a different entry in the cheapest bucket is NOT mined
-        self.nodes[0].prioritisetransaction(txids[0][0], int(3*base_fee*COIN))
+        self.nodes[0].prioritisetransaction(txid=txids[0][0], fee_delta=int(3*base_fee*COIN))
 
         self.nodes[0].generate(1)
 
@@ -65,7 +65,7 @@ class PrioritiseTransactionTest(BitcoinTestFramework):
 
         # Add a prioritisation before a tx is in the mempool (de-prioritising a
         # high-fee transaction so that it's now low fee).
-        self.nodes[0].prioritisetransaction(high_fee_tx, -int(2*base_fee*COIN))
+        self.nodes[0].prioritisetransaction(txid=high_fee_tx, fee_delta=-int(2*base_fee*COIN))
 
         # Add everything back to mempool
         self.nodes[0].invalidateblock(self.nodes[0].getbestblockhash())
@@ -109,7 +109,7 @@ class PrioritiseTransactionTest(BitcoinTestFramework):
         # This is a less than 1000-byte transaction, so just set the fee
         # to be the minimum for a 1000 byte transaction and check that it is
         # accepted.
-        self.nodes[0].prioritisetransaction(tx_id, int(self.relayfee*COIN))
+        self.nodes[0].prioritisetransaction(txid=tx_id, fee_delta=int(self.relayfee*COIN))
 
         self.log.info("Assert that prioritised free transaction is accepted to mempool")
         assert_equal(self.nodes[0].sendrawtransaction(tx_hex), tx_id)
@@ -120,7 +120,7 @@ class PrioritiseTransactionTest(BitcoinTestFramework):
         mock_time = int(time.time())
         self.nodes[0].setmocktime(mock_time)
         template = self.nodes[0].getblocktemplate()
-        self.nodes[0].prioritisetransaction(tx_id, -int(self.relayfee*COIN))
+        self.nodes[0].prioritisetransaction(txid=tx_id, fee_delta=-int(self.relayfee*COIN))
         self.nodes[0].setmocktime(mock_time+10)
         new_template = self.nodes[0].getblocktemplate()
 

test/functional/replace-by-fee.py

@@ -482,7 +482,7 @@ class ReplaceByFeeTest(BitcoinTestFramework):
         assert_raises_jsonrpc(-26, "insufficient fee", self.nodes[0].sendrawtransaction, tx1b_hex, True)
 
         # Use prioritisetransaction to set tx1a's fee to 0.
-        self.nodes[0].prioritisetransaction(tx1a_txid, int(-0.1*COIN))
+        self.nodes[0].prioritisetransaction(txid=tx1a_txid, fee_delta=int(-0.1*COIN))
 
         # Now tx1b should be able to replace tx1a
         tx1b_txid = self.nodes[0].sendrawtransaction(tx1b_hex, True)
@@ -509,7 +509,7 @@ class ReplaceByFeeTest(BitcoinTestFramework):
         assert_raises_jsonrpc(-26, "insufficient fee", self.nodes[0].sendrawtransaction, tx2b_hex, True)
 
         # Now prioritise tx2b to have a higher modified fee
-        self.nodes[0].prioritisetransaction(tx2b.hash, int(0.1*COIN))
+        self.nodes[0].prioritisetransaction(txid=tx2b.hash, fee_delta=int(0.1*COIN))
 
         # tx2b should now be accepted
         tx2b_txid = self.nodes[0].sendrawtransaction(tx2b_hex, True)