Location error handling

microservices/LocationsApi/Controllers/LocationsController.cs

@@ -17,12 +17,14 @@ public class LocationsController : ControllerBase
     private readonly LocationStore _locations;
     private readonly IHttpClientFactory _httpClientFactory;
     private readonly IConfiguration _configuration;
+    private readonly ILogger<LocationsController> _logger;
 
-    public LocationsController(LocationStore locations, IHttpClientFactory httpClientFactory, IConfiguration configuration)
+    public LocationsController(LocationStore locations, IHttpClientFactory httpClientFactory, IConfiguration configuration, ILogger<LocationsController> logger)
     {
         _locations = locations;
         _httpClientFactory = httpClientFactory;
         _configuration = configuration;
+        _logger = logger;
     }
 
     [HttpPost]
@@ -140,26 +142,56 @@ public class LocationsController : ControllerBase
         if (!string.IsNullOrWhiteSpace(token))
             request.Headers.Authorization = AuthenticationHeaderValue.Parse(token);
 
-        using var response = await client.SendAsync(request);
-        var responseBody = await response.Content.ReadAsStringAsync();
-        if (!response.IsSuccessStatusCode)
+        HttpResponseMessage response;
+        try
+        {
+            response = await client.SendAsync(request);
+        }
+        catch (HttpRequestException ex)
         {
             if (interact.PreviousObject is not null)
                 await _locations.RestoreObjectInteractionAsync(id, interact.PreviousObject);
-            return StatusCode((int)response.StatusCode, responseBody);
+
+            _logger.LogError(
+                ex,
+                "Failed to reach InventoryApi while processing location interaction for location {LocationId}, character {CharacterId}, object {ObjectId}",
+                id,
+                req.CharacterId,
+                req.ObjectId
+            );
+
+            return StatusCode(StatusCodes.Status502BadGateway, new
+            {
+                type = "https://httpstatuses.com/502",
+                title = "Bad Gateway",
+                status = 502,
+                detail = $"Failed to reach InventoryApi at {inventoryBaseUrl}.",
+                traceId = HttpContext.TraceIdentifier
+            });
         }
 
-        return Ok(new InteractLocationObjectResponse
+        using (response)
         {
-            LocationId = id,
-            CharacterId = req.CharacterId,
-            ObjectId = interact.ObjectId,
-            ObjectType = interact.ObjectType,
-            ItemKey = interact.ItemKey,
-            QuantityGranted = interact.QuantityGranted,
-            RemainingQuantity = interact.RemainingQuantity,
-            Consumed = interact.Consumed,
-            InventoryResponseJson = responseBody
-        });
+            var responseBody = await response.Content.ReadAsStringAsync();
+            if (!response.IsSuccessStatusCode)
+            {
+                if (interact.PreviousObject is not null)
+                    await _locations.RestoreObjectInteractionAsync(id, interact.PreviousObject);
+                return StatusCode((int)response.StatusCode, responseBody);
+            }
+
+            return Ok(new InteractLocationObjectResponse
+            {
+                LocationId = id,
+                CharacterId = req.CharacterId,
+                ObjectId = interact.ObjectId,
+                ObjectType = interact.ObjectType,
+                ItemKey = interact.ItemKey,
+                QuantityGranted = interact.QuantityGranted,
+                RemainingQuantity = interact.RemainingQuantity,
+                Consumed = interact.Consumed,
+                InventoryResponseJson = responseBody
+            });
+        }
     }
 }

microservices/LocationsApi/Program.cs

@@ -1,5 +1,6 @@
 using LocationsApi.Services;
 using Microsoft.AspNetCore.Authentication.JwtBearer;
+using Microsoft.AspNetCore.Diagnostics;
 using Microsoft.IdentityModel.Tokens;
 using Microsoft.OpenApi.Models;
 using System.Text;
@@ -60,6 +61,40 @@ builder.Services.AddAuthorization();
 
 var app = builder.Build();
 
+app.UseExceptionHandler(errorApp =>
+{
+    errorApp.Run(async context =>
+    {
+        var feature = context.Features.Get<IExceptionHandlerFeature>();
+        var exception = feature?.Error;
+        var logger = context.RequestServices.GetRequiredService<ILoggerFactory>().CreateLogger("GlobalException");
+        var traceId = context.TraceIdentifier;
+
+        if (exception is not null)
+        {
+            logger.LogError(
+                exception,
+                "Unhandled exception for {Method} {Path}. TraceId={TraceId}",
+                context.Request.Method,
+                context.Request.Path,
+                traceId
+            );
+        }
+
+        context.Response.StatusCode = StatusCodes.Status500InternalServerError;
+        context.Response.ContentType = "application/problem+json";
+
+        await context.Response.WriteAsJsonAsync(new
+        {
+            type = "https://httpstatuses.com/500",
+            title = "Internal Server Error",
+            status = 500,
+            detail = exception?.Message ?? "An unexpected server error occurred.",
+            traceId
+        });
+    });
+});
+
 app.MapGet("/healthz", () => Results.Ok("ok"));
 app.UseSwagger();
 app.UseSwaggerUI(o =>