multi: new bitcoind rpcpolling backend for itests

lntest/bitcoind_common.go

@@ -29,6 +29,7 @@ type BitcoindBackendConfig struct {
 	zmqTxPath    string
 	p2pPort      int
 	rpcClient    *rpcclient.Client
+	rpcPolling   bool
 
 	// minerAddr is the p2p address of the miner to connect to.
 	minerAddr string
@@ -46,10 +47,19 @@ func (b BitcoindBackendConfig) GenArgs() []string {
 	args = append(args, fmt.Sprintf("--bitcoind.rpchost=%v", b.rpcHost))
 	args = append(args, fmt.Sprintf("--bitcoind.rpcuser=%v", b.rpcUser))
 	args = append(args, fmt.Sprintf("--bitcoind.rpcpass=%v", b.rpcPass))
-	args = append(args, fmt.Sprintf("--bitcoind.zmqpubrawblock=%v",
-		b.zmqBlockPath))
-	args = append(args, fmt.Sprintf("--bitcoind.zmqpubrawtx=%v",
-		b.zmqTxPath))
+
+	if b.rpcPolling {
+		args = append(args, fmt.Sprintf("--bitcoind.rpcpolling"))
+		args = append(args,
+			fmt.Sprintf("--bitcoind.blockpollinginterval=10ms"))
+		args = append(args,
+			fmt.Sprintf("--bitcoind.txpollinginterval=10ms"))
+	} else {
+		args = append(args, fmt.Sprintf("--bitcoind.zmqpubrawblock=%v",
+			b.zmqBlockPath))
+		args = append(args, fmt.Sprintf("--bitcoind.zmqpubrawtx=%v",
+			b.zmqTxPath))
+	}
 
 	return args
 }
@@ -76,8 +86,8 @@ func (b BitcoindBackendConfig) Name() string {
 
 // newBackend starts a bitcoind node with the given extra parameters and returns
 // a BitcoindBackendConfig for that node.
-func newBackend(miner string, netParams *chaincfg.Params, extraArgs []string) (
-	*BitcoindBackendConfig, func() error, error) {
+func newBackend(miner string, netParams *chaincfg.Params, extraArgs []string,
+	rpcPolling bool) (*BitcoindBackendConfig, func() error, error) {
 
 	baseLogDir := fmt.Sprintf(logDirPattern, GetLogDir())
 	if netParams != &chaincfg.RegressionNetParams {
@@ -192,6 +202,7 @@ func newBackend(miner string, netParams *chaincfg.Params, extraArgs []string) (
 		p2pPort:      p2pPort,
 		rpcClient:    client,
 		minerAddr:    miner,
+		rpcPolling:   rpcPolling,
 	}
 
 	return &bd, cleanUp, nil