subserver: add loop

subservers/loop.go

@@ -0,0 +1,99 @@
+package subservers
+
+import (
+	"github.com/lightninglabs/lndclient"
+	"github.com/lightninglabs/loop/loopd"
+	"github.com/lightninglabs/loop/looprpc"
+	"github.com/lightningnetwork/lnd/lnrpc"
+	"google.golang.org/grpc"
+)
+
+// loopSubServer implements the SubServer interface.
+type loopSubServer struct {
+	*loopd.Daemon
+	remote    bool
+	cfg       *loopd.Config
+	remoteCfg *RemoteDaemonConfig
+}
+
+// A compile-time check to ensure that loopSubServer implements SubServer.
+var _ SubServer = (*loopSubServer)(nil)
+
+// NewLoopSubServer returns a new loop implementation of the SubServer
+// interface.
+func NewLoopSubServer(cfg *loopd.Config, remoteCfg *RemoteDaemonConfig,
+	remote bool) SubServer {
+
+	return &loopSubServer{
+		Daemon:    loopd.New(cfg, nil),
+		cfg:       cfg,
+		remoteCfg: remoteCfg,
+		remote:    remote,
+	}
+}
+
+// Name returns the name of the sub-server.
+//
+// NOTE: this is part of the SubServer interface.
+func (l *loopSubServer) Name() string {
+	return LOOP
+}
+
+// Remote returns true if the sub-server is running remotely and so should be
+// connected to instead of spinning up an integrated server.
+//
+// NOTE: this is part of the SubServer interface.
+func (l *loopSubServer) Remote() bool {
+	return l.remote
+}
+
+// RemoteConfig returns the config required to connect to the sub-server if it
+// is running in remote mode.
+//
+// NOTE: this is part of the SubServer interface.
+func (l *loopSubServer) RemoteConfig() *RemoteDaemonConfig {
+	return l.remoteCfg
+}
+
+// Start starts the sub-server in integrated mode.
+//
+// NOTE: this is part of the SubServer interface.
+func (l *loopSubServer) Start(_ lnrpc.LightningClient,
+	lndGrpc *lndclient.GrpcLndServices, withMacaroonService bool) error {
+
+	return l.StartAsSubserver(lndGrpc, withMacaroonService)
+}
+
+// Stop stops the sub-server in integrated mode.
+//
+// NOTE: this is part of the SubServer interface.
+func (l *loopSubServer) Stop() error {
+	l.Daemon.Stop()
+
+	return nil
+}
+
+// RegisterGrpcService must register the sub-server's GRPC server with the given
+// registrar.
+//
+// NOTE: this is part of the SubServer interface.
+func (l *loopSubServer) RegisterGrpcService(registrar grpc.ServiceRegistrar) {
+	looprpc.RegisterSwapClientServer(registrar, l)
+}
+
+// ServerErrChan returns an error channel that should be listened on after
+// starting the sub-server to listen for any runtime errors. It is optional and
+// may be set to nil. This only applies in integrated mode.
+//
+// NOTE: this is part of the SubServer interface.
+func (l *loopSubServer) ServerErrChan() chan error {
+	return l.ErrChan
+}
+
+// MacPath returns the path to the sub-server's macaroon if it is not running in
+// remote mode.
+//
+// NOTE: this is part of the SubServer interface.
+func (l *loopSubServer) MacPath() string {
+	return l.cfg.MacaroonPath
+}

subservers/subserver.go

@@ -13,6 +13,7 @@ import (
 const (
 	LND     string = "lnd"
 	LIT     string = "lit"
+	LOOP    string = "loop"
 	POOL    string = "pool"
 	FARADAY string = "faraday"
 )