From 2c52861d705b728e34f83310021c996bcc667c4f Mon Sep 17 00:00:00 2001
From: EugeneTes <meelstorm@gmail.com>
Date: Thu, 23 Jul 2026 07:43:35 +0000
Subject: [PATCH] add IInsinTelemetry and NullInsinTelemetry

---
 .../Telemetry/NullInsinTelemetryTests.cs           | 14 ++++++++++++++
 .../PrintServer/Telemetry/IInsinTelemetry.cs       |  6 ++++++
 .../PrintServer/Telemetry/NullInsinTelemetry.cs    |  6 ++++++
 3 files changed, 26 insertions(+)
 create mode 100644 Inspectron.Epson.Tests/Telemetry/NullInsinTelemetryTests.cs
 create mode 100644 Inspectron.Epson/PrintServer/Telemetry/IInsinTelemetry.cs
 create mode 100644 Inspectron.Epson/PrintServer/Telemetry/NullInsinTelemetry.cs

diff --git a/Inspectron.Epson.Tests/Telemetry/NullInsinTelemetryTests.cs b/Inspectron.Epson.Tests/Telemetry/NullInsinTelemetryTests.cs
new file mode 100644
index 0000000..973776b
--- /dev/null
+++ b/Inspectron.Epson.Tests/Telemetry/NullInsinTelemetryTests.cs
@@ -0,0 +1,14 @@
+using Inspectron.Epson.PrintServer.Telemetry;
+
+namespace Inspectron.Epson.Tests.Telemetry;
+
+public class NullInsinTelemetryTests
+{
+    [Fact]
+    public void Emit_does_nothing_and_does_not_throw()
+    {
+        var telemetry = new NullInsinTelemetry();
+        var ex = Record.Exception(() => telemetry.Emit("service.started", "version=1.0.0"));
+        Assert.Null(ex);
+    }
+}
diff --git a/Inspectron.Epson/PrintServer/Telemetry/IInsinTelemetry.cs b/Inspectron.Epson/PrintServer/Telemetry/IInsinTelemetry.cs
new file mode 100644
index 0000000..a15c788
--- /dev/null
+++ b/Inspectron.Epson/PrintServer/Telemetry/IInsinTelemetry.cs
@@ -0,0 +1,6 @@
+namespace Inspectron.Epson.PrintServer.Telemetry;
+
+public interface IInsinTelemetry
+{
+    void Emit(string kind, string message);
+}
diff --git a/Inspectron.Epson/PrintServer/Telemetry/NullInsinTelemetry.cs b/Inspectron.Epson/PrintServer/Telemetry/NullInsinTelemetry.cs
new file mode 100644
index 0000000..ce15cac
--- /dev/null
+++ b/Inspectron.Epson/PrintServer/Telemetry/NullInsinTelemetry.cs
@@ -0,0 +1,6 @@
+namespace Inspectron.Epson.PrintServer.Telemetry;
+
+public sealed class NullInsinTelemetry : IInsinTelemetry
+{
+    public void Emit(string kind, string message) { }
+}