Merge pull request #5561 from duplicati/feature/add-health-checks

Added healt checks to server.

Duplicati/CommandLine/ServerUtil/Commands/Health.cs

@@ -0,0 +1,38 @@
+using System.CommandLine;
+using System.CommandLine.NamingConventionBinder;
+
+namespace Duplicati.CommandLine.ServerUtil.Commands;
+
+public static class Health
+{
+    public static Command Create() =>
+        new Command("health", "Checks the server health endpoint")
+        .WithHandler(CommandHandler.Create<Settings>(async (settings) =>
+        {
+            using var client = new HttpClient(new HttpClientHandler()
+            {
+                ServerCertificateCustomValidationCallback = settings.Insecure
+                       ? HttpClientHandler.DangerousAcceptAnyServerCertificateValidator
+                       : null
+            })
+            {
+                BaseAddress = settings.HostUrl,
+                Timeout = TimeSpan.FromSeconds(10)
+            };
+
+            try
+            {
+                var response = await client.GetAsync("health");
+                response.EnsureSuccessStatusCode();
+
+                Console.WriteLine("Server is healthy");
+                return 0;
+            }
+            catch (HttpRequestException)
+            {
+                Console.WriteLine("Server is unhealthy");
+                return 1;
+            }
+        })
+    );
+}

Duplicati/CommandLine/ServerUtil/Duplicati.CommandLine.ServerUtil.csproj

@@ -6,7 +6,7 @@
     <Nullable>enable</Nullable>
     <AssemblyName>Duplicati.CommandLine.ServerUtil.Implementation</AssemblyName>
     <Copyright>Copyright © 2024 Team Duplicati, MIT license</Copyright>
-    <DefaultNamespace>Duplicati.CommandLine.ServerUtil</DefaultNamespace>
+    <RootNamespace>Duplicati.CommandLine.ServerUtil</RootNamespace>
   </PropertyGroup>
 
   <ItemGroup>

Duplicati/CommandLine/ServerUtil/Program.cs

@@ -30,6 +30,7 @@ public static class Program
                 Logout.Create(),
                 Import.Create(),
                 Export.Create(),
+                Health.Create(),
             };
 
         rootCmd = SettingsBinder.AddGlobalOptions(rootCmd);

Duplicati/WebserverCore/DuplicatiWebserver.cs

@@ -12,6 +12,7 @@ using Microsoft.AspNetCore.Authentication.JwtBearer;
 using Microsoft.AspNetCore.Diagnostics;
 using Microsoft.AspNetCore.Http.Json;
 using Microsoft.Extensions.Configuration.Json;
+using Microsoft.Extensions.Diagnostics.HealthChecks;
 using Microsoft.OpenApi.Models;
 
 namespace Duplicati.WebserverCore;
@@ -156,6 +157,9 @@ public partial class DuplicatiWebserver
                 };
             });
 
+        builder.Services.AddHealthChecks()
+            .AddCheck("Basic", () => HealthCheckResult.Healthy("Service is running"));
+
         builder.Services.AddDuplicati(connection);
 
         // Prevent logs from spamming the console, but allow enabling for debugging
@@ -216,6 +220,7 @@ public partial class DuplicatiWebserver
 
     public Task Start(InitSettings settings)
     {
+        App.MapHealthChecks("/health");
         App.AddEndpoints()
             .UseNotifications("/notifications");