[be] open telemetry: only log to console when no other exporter exists

Kemkas.Web/Config/ExternalAuthOptions.cs

@@ -0,0 +1,10 @@
+namespace Kemkas.Web.Config;
+
+public class ExternalAuthOptions
+{
+    public string? ClientId { get; set; }
+    
+    public string? ClientSecret { get; set; }
+
+    public bool IsValid() => ClientId != null && ClientSecret != null;
+}

Kemkas.Web/Config/WebApplicationBuilderExtensions.cs

@@ -0,0 +1,84 @@
+using OpenTelemetry.Metrics;
+using OpenTelemetry.Resources;
+using OpenTelemetry.Trace;
+
+namespace Kemkas.Web.Config;
+
+public static class WebApplicationBuilderExtensions
+{
+    public static void AddAuth(this WebApplicationBuilder builder)
+    {
+        var externalAuthConfigSection = builder.Configuration.GetSection("Authentication");
+        var authenticationBuilder = builder.Services.AddAuthentication();
+
+        var googleAuthOptions = new ExternalAuthOptions();
+        externalAuthConfigSection.GetSection("Google").Bind(googleAuthOptions);
+        if (googleAuthOptions.IsValid())
+        {
+            authenticationBuilder.AddGoogle(options =>
+            {
+                options.ClientId = googleAuthOptions.ClientId!;
+                options.ClientSecret = googleAuthOptions.ClientSecret!;
+            });
+        }
+
+        var facebookAuthOptions = new ExternalAuthOptions();
+        externalAuthConfigSection.GetSection("Facebook").Bind(facebookAuthOptions);
+        if (facebookAuthOptions.IsValid())
+        {
+            authenticationBuilder.AddFacebook(options =>
+            {
+                options.ClientId = facebookAuthOptions.ClientId!;
+                options.ClientSecret = facebookAuthOptions.ClientSecret!;
+            });
+        }
+
+        var discordAuthOptions = new ExternalAuthOptions();
+        externalAuthConfigSection.GetSection("Discord").Bind(discordAuthOptions);
+        if (discordAuthOptions.IsValid())
+        {
+            authenticationBuilder.AddDiscord(options =>
+            {
+                options.ClientId = discordAuthOptions.ClientId!;
+                options.ClientSecret = discordAuthOptions.ClientSecret!;
+            });
+        }
+    }
+    
+    public static void AddOpenTelemetry(this WebApplicationBuilder builder)
+    {
+        var otlResourceBuilder = ResourceBuilder.CreateDefault().AddService("kemkas-api");
+        var openTelemetryEndpoint = builder.Configuration.GetSection("monitoring")["url"];
+
+        builder.Services.AddOpenTelemetry().WithTracing(tracerProviderBuilder =>
+            {
+                tracerProviderBuilder
+                    .SetResourceBuilder(otlResourceBuilder)
+                    .AddAspNetCoreInstrumentation();
+                if (openTelemetryEndpoint != null)
+                {
+                    tracerProviderBuilder.AddOtlpExporter(opt => opt.Endpoint = new Uri(openTelemetryEndpoint));
+                }
+                else
+                {
+                    tracerProviderBuilder.AddConsoleExporter();
+                }
+                    
+            })
+            .WithMetrics(meterProviderBuilder =>
+            {
+                meterProviderBuilder
+                    .SetResourceBuilder(otlResourceBuilder)
+                    .AddAspNetCoreInstrumentation();
+                if (openTelemetryEndpoint != null)
+                {
+                    meterProviderBuilder.AddOtlpExporter(opt => opt.Endpoint = new Uri(openTelemetryEndpoint));
+                }
+                else
+                {
+                    meterProviderBuilder.AddConsoleExporter();
+                }
+            });
+    }
+
+}

Kemkas.Web/Kemkas.Web.csproj

@@ -18,6 +18,7 @@
 
     <ItemGroup>
         <PackageReference Include="AspNet.Security.OAuth.Discord" Version="8.0.0" />
+        <PackageReference Include="Grpc.Core" Version="2.46.6" />
         <PackageReference Include="Microsoft.AspNetCore.Authentication.Facebook" Version="8.0.0" />
         <PackageReference Include="Microsoft.AspNetCore.Authentication.Google" Version="8.0.0" />
         <PackageReference Include="Microsoft.AspNetCore.DataProtection.EntityFrameworkCore" Version="8.0.0" />
@@ -36,6 +37,10 @@
         </PackageReference>
         <PackageReference Include="Npgsql.EntityFrameworkCore.PostgreSQL" Version="8.0.0" />
         <PackageReference Include="Npgsql.EntityFrameworkCore.PostgreSQL.Design" Version="1.1.0" />
+        <PackageReference Include="OpenTelemetry.Exporter.Console" Version="1.7.0" />
+        <PackageReference Include="OpenTelemetry.Exporter.OpenTelemetryProtocol" Version="1.7.0" />
+        <PackageReference Include="OpenTelemetry.Extensions.Hosting" Version="1.7.0" />
+        <PackageReference Include="OpenTelemetry.Instrumentation.AspNetCore" Version="1.7.0" />
     </ItemGroup>
     
     <ItemGroup>

Kemkas.Web/Program.cs

@@ -11,6 +11,9 @@ using Kemkas.Web.Services.Identity;
 using Microsoft.AspNetCore.DataProtection;
 using Microsoft.AspNetCore.HttpOverrides;
 using Microsoft.AspNetCore.Identity.UI.Services;
+using OpenTelemetry.Metrics;
+using OpenTelemetry.Resources;
+using OpenTelemetry.Trace;
 using IPNetwork = Microsoft.AspNetCore.HttpOverrides.IPNetwork;
 
 var builder = WebApplication.CreateBuilder(args);
@@ -34,25 +37,7 @@ builder.Services.AddSingleton<IEmailSender, MailgunEmailSender>();
 builder.Services.AddDefaultIdentity<ApplicationUser>(options => options.SignIn.RequireConfirmedAccount = true)
     .AddEntityFrameworkStores<ApplicationDbContext>();
 
-builder.Services.AddAuthentication()
-    .AddGoogle(options =>
-    {
-        var section = builder.Configuration.GetSection("Authentication:Google");
-        options.ClientId = section["ClientId"];
-        options.ClientSecret = section["ClientSecret"];
-    })
-    .AddFacebook(options =>
-    {
-        var section = builder.Configuration.GetSection("Authentication:Facebook");
-        options.ClientId = section["ClientId"];
-        options.ClientSecret = section["ClientSecret"];
-    })
-    .AddDiscord(options =>
-    {
-        var section = builder.Configuration.GetSection("Authentication:Discord");
-        options.ClientId = section["ClientId"];
-        options.ClientSecret = section["ClientSecret"];
-    });
+builder.AddAuth();
 
 builder.Services.AddControllersWithViews().AddJsonOptions(options =>
 {
@@ -62,6 +47,10 @@ builder.Services.AddControllersWithViews().AddJsonOptions(options =>
 });
 builder.Services.AddRazorPages();
 
+builder.AddOpenTelemetry();
+
+builder.Services.AddHealthChecks();
+
 builder.Services.AddCharacterServices();
 
 var app = builder.Build();
@@ -93,6 +82,8 @@ else
     app.UseHsts(); // TODO: check if this should be handled by proxy
 }
 
+app.UseHealthChecks("/health");
+
 await using (var scope = app.Services.CreateAsyncScope())
 {
     var db = scope.ServiceProvider.GetRequiredService<ApplicationDbContext>();

Kemkas.Web/packages.lock.json

@@ -8,6 +8,16 @@
         "resolved": "8.0.0",
         "contentHash": "+MtOHPctq1QT1c03h+7g4oBWtZ/buQYUJg4AR0DG+qjmD2cQRMGWXC1J6/ITeCc6xa5BcXzJmt1L/8pVXIB4kw=="
       },
+      "Grpc.Core": {
+        "type": "Direct",
+        "requested": "[2.46.6, )",
+        "resolved": "2.46.6",
+        "contentHash": "ZoRg3KmOJ2urTF4+u3H0b1Yv10xzz2Y/flFWS2tnRmj8dbKLeiJaSRqu4LOBD3ova90evqLkVZ85kUkC4JT4lw==",
+        "dependencies": {
+          "Grpc.Core.Api": "2.46.6",
+          "System.Memory": "4.5.3"
+        }
+      },
       "Microsoft.AspNetCore.Authentication.Facebook": {
         "type": "Direct",
         "requested": "[8.0.0, )",
@@ -124,6 +134,78 @@
           "Npgsql.EntityFrameworkCore.PostgreSQL": "1.1.0"
         }
       },
+      "OpenTelemetry.Exporter.Console": {
+        "type": "Direct",
+        "requested": "[1.7.0, )",
+        "resolved": "1.7.0",
+        "contentHash": "9mcwpArzG7+5cLnG6marWdVD1TyoVR03WAjShvxADqgsEeuzLMClTlgXi41bTCAgxjYyiHV5l60fJwXTekiJdQ==",
+        "dependencies": {
+          "OpenTelemetry": "1.7.0",
+          "System.Text.Encodings.Web": "4.7.2",
+          "System.Text.Json": "4.7.2"
+        }
+      },
+      "OpenTelemetry.Exporter.OpenTelemetryProtocol": {
+        "type": "Direct",
+        "requested": "[1.7.0, )",
+        "resolved": "1.7.0",
+        "contentHash": "ULGTxg4HdnJD+CIuiD15Uov4xVVqwpbNGFd075J3MT3lLM9XcwU4YRz7CCNmqIlehYaiZrGhUurXrI2LgZZL1Q==",
+        "dependencies": {
+          "Google.Protobuf": "[3.22.5, 4.0.0)",
+          "Grpc.Net.Client": "[2.52.0, 3.0.0)",
+          "OpenTelemetry": "1.7.0"
+        }
+      },
+      "OpenTelemetry.Extensions.Hosting": {
+        "type": "Direct",
+        "requested": "[1.7.0, )",
+        "resolved": "1.7.0",
+        "contentHash": "MbB7CWWqb7xHK0jTF9Gtvw/eLWdaKqzkE1XAwLe05xyskHuwJWAbZFax4nGLA71YkMWQNO5iPIBlirvYXOLMlg==",
+        "dependencies": {
+          "Microsoft.Extensions.Diagnostics.Abstractions": "8.0.0",
+          "Microsoft.Extensions.Hosting.Abstractions": "8.0.0",
+          "OpenTelemetry": "1.7.0"
+        }
+      },
+      "OpenTelemetry.Instrumentation.AspNetCore": {
+        "type": "Direct",
+        "requested": "[1.7.0, )",
+        "resolved": "1.7.0",
+        "contentHash": "K/mjCmuR9zgrL6fMC6sbnX/y6BOJJFI3hp42O+tz8nT/w6sxbfjrLcU+fVwfct3lsnohSKdPfrq6fSrxAF5ezw==",
+        "dependencies": {
+          "OpenTelemetry.Api.ProviderBuilderExtensions": "1.7.0"
+        }
+      },
+      "Google.Protobuf": {
+        "type": "Transitive",
+        "resolved": "3.22.5",
+        "contentHash": "tTMtDZPbLxJew8pk7NBdqhLqC4OipfkZdwPuCEUNr2AoDo1siUGcxFqJK0wDewTL8ge5Cjrb16CToMPxBUHMGA=="
+      },
+      "Grpc.Core.Api": {
+        "type": "Transitive",
+        "resolved": "2.52.0",
+        "contentHash": "SQiPyBczG4vKPmI6Fd+O58GcxxDSFr6nfRAJuBDUNj+PgdokhjWJvZE/La1c09AkL2FVm/jrDloG89nkzmVF7A==",
+        "dependencies": {
+          "System.Memory": "4.5.3"
+        }
+      },
+      "Grpc.Net.Client": {
+        "type": "Transitive",
+        "resolved": "2.52.0",
+        "contentHash": "hWVH9g/Nnjz40ni//2S8UIOyEmhueQREoZIkD0zKHEPqLxXcNlbp4eebXIOicZtkwDSx0TFz9NpkbecEDn6rBw==",
+        "dependencies": {
+          "Grpc.Net.Common": "2.52.0",
+          "Microsoft.Extensions.Logging.Abstractions": "3.0.3"
+        }
+      },
+      "Grpc.Net.Common": {
+        "type": "Transitive",
+        "resolved": "2.52.0",
+        "contentHash": "di9qzpdx525IxumZdYmu6sG2y/gXJyYeZ1ruFUzB9BJ1nj4kU1/dTAioNCMt1VLRvNVDqh8S8B1oBdKhHJ4xRg==",
+        "dependencies": {
+          "Grpc.Core.Api": "2.52.0"
+        }
+      },
       "Humanizer.Core": {
         "type": "Transitive",
         "resolved": "2.14.1",
@@ -265,6 +347,15 @@
           "Microsoft.Extensions.Primitives": "8.0.0"
         }
       },
+      "Microsoft.Extensions.Configuration": {
+        "type": "Transitive",
+        "resolved": "8.0.0",
+        "contentHash": "0J/9YNXTMWSZP2p2+nvl8p71zpSwokZXZuJW+VjdErkegAnFdO1XlqtA62SJtgVYHdKu3uPxJHcMR/r35HwFBA==",
+        "dependencies": {
+          "Microsoft.Extensions.Configuration.Abstractions": "8.0.0",
+          "Microsoft.Extensions.Primitives": "8.0.0"
+        }
+      },
       "Microsoft.Extensions.Configuration.Abstractions": {
         "type": "Transitive",
         "resolved": "8.0.0",
@@ -273,6 +364,14 @@
           "Microsoft.Extensions.Primitives": "8.0.0"
         }
       },
+      "Microsoft.Extensions.Configuration.Binder": {
+        "type": "Transitive",
+        "resolved": "8.0.0",
+        "contentHash": "mBMoXLsr5s1y2zOHWmKsE9veDcx8h1x/c3rz4baEdQKTeDcmQAPNbB54Pi/lhFO3K431eEq6PFbMgLaa6PHFfA==",
+        "dependencies": {
+          "Microsoft.Extensions.Configuration.Abstractions": "8.0.0"
+        }
+      },
       "Microsoft.Extensions.DependencyInjection": {
         "type": "Transitive",
         "resolved": "8.0.0",
@@ -371,6 +470,21 @@
           "Microsoft.Extensions.DependencyInjection.Abstractions": "8.0.0"
         }
       },
+      "Microsoft.Extensions.Logging.Configuration": {
+        "type": "Transitive",
+        "resolved": "8.0.0",
+        "contentHash": "ixXXV0G/12g6MXK65TLngYN9V5hQQRuV+fZi882WIoVJT7h5JvoYoxTEwCgdqwLjSneqh1O+66gM8sMr9z/rsQ==",
+        "dependencies": {
+          "Microsoft.Extensions.Configuration": "8.0.0",
+          "Microsoft.Extensions.Configuration.Abstractions": "8.0.0",
+          "Microsoft.Extensions.Configuration.Binder": "8.0.0",
+          "Microsoft.Extensions.DependencyInjection.Abstractions": "8.0.0",
+          "Microsoft.Extensions.Logging": "8.0.0",
+          "Microsoft.Extensions.Logging.Abstractions": "8.0.0",
+          "Microsoft.Extensions.Options": "8.0.0",
+          "Microsoft.Extensions.Options.ConfigurationExtensions": "8.0.0"
+        }
+      },
       "Microsoft.Extensions.Options": {
         "type": "Transitive",
         "resolved": "8.0.0",
@@ -380,6 +494,18 @@
           "Microsoft.Extensions.Primitives": "8.0.0"
         }
       },
+      "Microsoft.Extensions.Options.ConfigurationExtensions": {
+        "type": "Transitive",
+        "resolved": "8.0.0",
+        "contentHash": "0f4DMRqEd50zQh+UyJc+/HiBsZ3vhAQALgdkcQEalSH1L2isdC7Yj54M3cyo5e+BeO5fcBQ7Dxly8XiBBcvRgw==",
+        "dependencies": {
+          "Microsoft.Extensions.Configuration.Abstractions": "8.0.0",
+          "Microsoft.Extensions.Configuration.Binder": "8.0.0",
+          "Microsoft.Extensions.DependencyInjection.Abstractions": "8.0.0",
+          "Microsoft.Extensions.Options": "8.0.0",
+          "Microsoft.Extensions.Primitives": "8.0.0"
+        }
+      },
       "Microsoft.Extensions.Primitives": {
         "type": "Transitive",
         "resolved": "8.0.0",
@@ -472,6 +598,33 @@
           "Microsoft.Extensions.Logging.Abstractions": "8.0.0"
         }
       },
+      "OpenTelemetry": {
+        "type": "Transitive",
+        "resolved": "1.7.0",
+        "contentHash": "HNmOJg++4FtEJGCIn1dCJcDkHRLNuLKU047owrGXUOfz/C/c5oZHOPKrowKVOy2jOOh/F9+HDshzeOk5NnQEZg==",
+        "dependencies": {
+          "Microsoft.Extensions.Logging": "8.0.0",
+          "Microsoft.Extensions.Logging.Configuration": "8.0.0",
+          "OpenTelemetry.Api.ProviderBuilderExtensions": "1.7.0"
+        }
+      },
+      "OpenTelemetry.Api": {
+        "type": "Transitive",
+        "resolved": "1.7.0",
+        "contentHash": "w5uDHl1Nm7R5igWu1QjewpdPzJSavua8NTI3+iThOdRNHD3cabox8JeIJ8LpBSXGHARSNFMJZ/Xr5EGRinMTMg==",
+        "dependencies": {
+          "System.Diagnostics.DiagnosticSource": "8.0.0"
+        }
+      },
+      "OpenTelemetry.Api.ProviderBuilderExtensions": {
+        "type": "Transitive",
+        "resolved": "1.7.0",
+        "contentHash": "fHLmJcRJk1dAwddjBgvqi/Grmr04hPo1DoFwTa6hxtSvAFOXPU56Xe9Sh2VXqz6Gstzp6TCju8z0Sob1t7BzSg==",
+        "dependencies": {
+          "Microsoft.Extensions.DependencyInjection.Abstractions": "8.0.0",
+          "OpenTelemetry.Api": "1.7.0"
+        }
+      },
       "runtime.debian.8-x64.runtime.native.System.Security.Cryptography.OpenSsl": {
         "type": "Transitive",
         "resolved": "4.3.0",
@@ -887,6 +1040,11 @@
           "System.Threading": "4.3.0"
         }
       },
+      "System.Memory": {
+        "type": "Transitive",
+        "resolved": "4.5.3",
+        "contentHash": "3oDzvc/zzetpTKWMShs1AADwZjQ/36HnsufHRPcOjyRAAMLDlu2iD33MBI2opxnezcVUtXyqDXXjoFMOU9c7SA=="
+      },
       "System.Net.Http": {
         "type": "Transitive",
         "resolved": "4.3.0",