From: Michael Tremer <michael.tremer@ipfire.org>
Date: Fri, 10 Jul 2026 13:44:57 +0000 (+0000)
Subject: dbus: Don't send an empty graph array
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=144e7ccb17761b6e336c353f2a580e855237847d;p=telemetry.git

dbus: Don't send an empty graph array

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>
---

diff --git a/src/daemon/graph-bus.c b/src/daemon/graph-bus.c
index c0190f8..e3816db 100644
--- a/src/daemon/graph-bus.c
+++ b/src/daemon/graph-bus.c
@@ -283,34 +283,36 @@ static int td_graph_bus_render(sd_bus_message* m, void* data, sd_bus_error* erro
 		goto ERROR;
 
 	// Append the graph
-	r = sd_bus_message_open_container(reply, 'e', "sv");
-	if (r < 0)
-		goto ERROR;
+	if (buffer) {
+		r = sd_bus_message_open_container(reply, 'e', "sv");
+		if (r < 0)
+			goto ERROR;
 
-	// Add the key
-	r = sd_bus_message_append(reply, "s", "graph");
-	if (r < 0)
-		goto ERROR;
+		// Add the key
+		r = sd_bus_message_append(reply, "s", "graph");
+		if (r < 0)
+			goto ERROR;
 
-	// Create the value (an array of bytes)
-	r = sd_bus_message_open_container(reply, 'v', "ay");
-	if (r < 0)
-		goto ERROR;
+		// Create the value (an array of bytes)
+		r = sd_bus_message_open_container(reply, 'v', "ay");
+		if (r < 0)
+			goto ERROR;
 
-	// Write the payload
-	r = sd_bus_message_append_array(reply, 'y', buffer, length);
-	if (r < 0)
-		goto ERROR;
+		// Write the payload
+		r = sd_bus_message_append_array(reply, 'y', buffer, length);
+		if (r < 0)
+			goto ERROR;
 
-	// Close the value array
-	r = sd_bus_message_close_container(reply);
-	if (r < 0)
-		goto ERROR;
+		// Close the value array
+		r = sd_bus_message_close_container(reply);
+		if (r < 0)
+			goto ERROR;
 
-	// Close the entry
-	r = sd_bus_message_close_container(reply);
-	if (r < 0)
-		goto ERROR;
+		// Close the entry
+		r = sd_bus_message_close_container(reply);
+		if (r < 0)
+			goto ERROR;
+	}
 
 	// Close the array
 	r = sd_bus_message_close_container(reply);