lnrpc/chainrpc: add ChainNotifier subserver Config

lnrpc/chainrpc/config_active.go

@@ -0,0 +1,34 @@
+// +build chainrpc
+
+package chainrpc
+
+import (
+	"github.com/lightningnetwork/lnd/chainntnfs"
+	"github.com/lightningnetwork/lnd/macaroons"
+)
+
+// Config is the primary configuration struct for the chain notifier RPC server.
+// It contains all the items required for the server to carry out its duties.
+// The fields with struct tags are meant to be parsed as normal configuration
+// options, while if able to be populated, the latter fields MUST also be
+// specified.
+type Config struct {
+	// ChainNotifierMacPath is the path for the chain notifier macaroon. If
+	// unspecified then we assume that the macaroon will be found under the
+	// network directory, named DefaultChainNotifierMacFilename.
+	ChainNotifierMacPath string `long:"notifiermacaroonpath" description:"Path to the chain notifier macaroon"`
+
+	// NetworkDir is the main network directory wherein the chain notifier
+	// RPC server will find the macaroon named
+	// DefaultChainNotifierMacFilename.
+	NetworkDir string
+
+	// MacService is the main macaroon service that we'll use to handle
+	// authentication for the chain notifier RPC server.
+	MacService *macaroons.Service
+
+	// ChainNotifier is the chain notifier instance that backs the chain
+	// notifier RPC server. The job of the chain notifier RPC server is
+	// simply to proxy valid requests to the active chain notifier instance.
+	ChainNotifier chainntnfs.ChainNotifier
+}

lnrpc/chainrpc/config_default.go

@@ -0,0 +1,6 @@
+// +build !chainrpc
+
+package chainrpc
+
+// Config is empty for non-chainrpc builds.
+type Config struct{}