From bd0b192fa0605c7167dcfe296cc17cde3ab517da Mon Sep 17 00:00:00 2001
From: Link Dupont <link@sub-pop.net>
Date: Fri, 21 Jul 2023 15:18:28 -0400
Subject: [PATCH 1/2] feat: add 'noop' transport

Add a noop transport option. Setting the config flag 'protocol' to
"none" or "" will configure yggd with a no-op transport. All the rest of
the dispatch and routing flows are unaffected, but no data is
transported to or from the client.

Signed-off-by: Link Dupont <link@sub-pop.net>
---
 cmd/yggd/main.go           | 12 +++++++++++-
 internal/transport/noop.go | 33 +++++++++++++++++++++++++++++++++
 2 files changed, 44 insertions(+), 1 deletion(-)
 create mode 100644 internal/transport/noop.go

diff --git a/cmd/yggd/main.go b/cmd/yggd/main.go
index 2bc096ef..80c70622 100644
--- a/cmd/yggd/main.go
+++ b/cmd/yggd/main.go
@@ -140,6 +140,16 @@ func setupClient(
 		if err != nil {
 			return nil, nil, cli.Exit(fmt.Errorf("cannot create HTTP transport: %w", err), 1)
 		}
+	case "none":
+		var err error
+		transporter, err = transport.NewNoopTransport()
+		if err != nil {
+			return nil, nil, cli.Exit(fmt.Errorf("cannot create no-op transport: %w", err), 1)
+		}
+		log.Info("no network protocol specified - no data will be sent or received over the network")
+		for _, server := range config.DefaultConfig.Server {
+			log.Warnf("no network protocol specified - ignoring server option '%v'", server)
+		}
 	default:
 		return nil, nil, cli.Exit(
 			fmt.Errorf("unsupported transport protocol: %v", config.DefaultConfig.Protocol),
@@ -436,7 +446,7 @@ func main() {
 		}),
 		altsrc.NewStringFlag(&cli.StringFlag{
 			Name:  config.FlagNameProtocol,
-			Usage: "Transmit data remotely using `PROTOCOL` ('mqtt' or 'http')",
+			Usage: "Transmit data remotely using `PROTOCOL` ('mqtt', 'http' or 'none')",
 			Value: "mqtt",
 		}),
 		altsrc.NewStringSliceFlag(&cli.StringSliceFlag{
diff --git a/internal/transport/noop.go b/internal/transport/noop.go
new file mode 100644
index 00000000..bf142622
--- /dev/null
+++ b/internal/transport/noop.go
@@ -0,0 +1,33 @@
+package transport
+
+import "crypto/tls"
+
+// Noop is a Transporter that does nothing. This Transport is used to enable a
+// "local only" dispatch mode.
+type Noop struct{}
+
+func NewNoopTransport() (*Noop, error) {
+	return &Noop{}, nil
+}
+
+func (t *Noop) Connect() error {
+	return nil
+}
+
+func (t *Noop) Disconnect(quiesce uint) {}
+
+func (t *Noop) Tx(addr string, metadata map[string]string, data []byte) (responseCode int, responseMetadata map[string]string, responseData []byte, err error) {
+	return
+}
+
+func (t *Noop) SetRxHandler(f RxHandlerFunc) error {
+	return nil
+}
+
+func (t *Noop) ReloadTLSConfig(tlsConfig *tls.Config) error {
+	return nil
+}
+
+func (t *Noop) SetEventHandler(f EventHandlerFunc) error {
+	return nil
+}

From 92c30e91fec7cd21ce7d8527df08c566499ee720 Mon Sep 17 00:00:00 2001
From: Link Dupont <link@sub-pop.net>
Date: Tue, 15 Aug 2023 12:52:41 -0400
Subject: [PATCH 2/2] ci(srpm): Remove %changelog section from spec

---
 dist/srpm/yggdrasil.spec.in | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/dist/srpm/yggdrasil.spec.in b/dist/srpm/yggdrasil.spec.in
index f046b669..e89cb98d 100644
--- a/dist/srpm/yggdrasil.spec.in
+++ b/dist/srpm/yggdrasil.spec.in
@@ -102,6 +102,3 @@ export %gomodulesmode
 %{_mandir}/man1/*
 
 %gopkgfiles
-
-%changelog
-%autochangelog