feat(fennec): add mongodb timestamp index

NETANOL-232

Author: Lelleck

Packrat/Fennec/Fennec.csproj

@@ -32,7 +32,6 @@
         <PackageReference Include="Microsoft.EntityFrameworkCore.Sqlite" Version="7.0.12" />
         <PackageReference Include="MongoDB.Bson" Version="2.22.0" />
         <PackageReference Include="MongoDB.Driver" Version="2.22.0" />
-        <PackageReference Include="QuickGraph" Version="3.6.61119.7" />
         <PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
         <PackageReference Include="Serilog" Version="3.0.1" />
         <PackageReference Include="Serilog.AspNetCore" Version="7.0.0" />

Packrat/Fennec/Services/DnsResolverService.cs

@@ -73,8 +73,12 @@ public DnsResolverService(ILogger log, IOptions<DnsCacheOptions> options)
         catch (Exception e)
         {
             // Prevent the console from being too cluttered with DNS resolution errors
-            if (e is SocketException { Message: "No such host is known." })
+            if (e is SocketException)
+            {
+                _log.Verbose(e, "Failed to resolve IP address {IpAddress} | {ExceptionName}: {ExceptionMessage}", ipAddress, 
+                    e.GetType(), e.Message);
                 return null;
+            }
 
             _log.Error(e, "Unexpected exception while DNS resolving {IpAddress} | {ExceptionName}: {ExceptionMessage}", ipAddress,
                 e.GetType(),

Packrat/Fennec/Startup.cs

@@ -14,6 +14,7 @@
 using Microsoft.EntityFrameworkCore;
 using Microsoft.Extensions.Options;
 using Microsoft.IdentityModel.Tokens;
+using MongoDB.Bson;
 using MongoDB.Bson.Serialization;
 using MongoDB.Driver;
 using Newtonsoft.Json;
@@ -291,6 +292,24 @@ public async Task Configure(WebApplication app, IWebHostEnvironment env)
             }
         }
 
+        var database = app.Services.GetRequiredService<IMongoDatabase>();
+        try
+        {
+            Log.Information("Attempting to connect to the MongoDB");
+            await database.RunCommandAsync((Command<BsonDocument>) "{ping:1}");
+            Log.Information("Successfully connected to the MongoDB database");
+        }
+        catch (Exception e)
+        {
+            Log.Fatal(e, "Failed to connect to the MongoDB database | {ExceptionName}: {ExceptionMessage}", 
+                e.GetType(), 
+                e.Message);
+        }
+        // TODO: use an injected collection
+        var collection = database.GetCollection<SingleTrace>("singleTraces");
+        var model = Builders<SingleTrace>.IndexKeys.Descending(s => s.Timestamp);
+        await collection.Indexes.CreateOneAsync(new CreateIndexModel<SingleTrace>(model));
+        
         app.UsePathBase("/api");
         app.UseSerilogRequestLogging();