// This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
public void Configure(IApplicationBuilder app, IWebHostEnvironment env, IServiceProvider serviceProvider, ILoggerFactory loggerFactory, IApiVersionDescriptionProvider provider)
{
app.UseDefaultFiles();
var cultures = Configuration.GetSection("SupportedCultures").Get <string[]>();
var supportedCultures = new List <CultureInfo>();
foreach (var culture in cultures)
{
supportedCultures.Add(new CultureInfo(culture));
}
app.UseRequestLocalization(new RequestLocalizationOptions
{
DefaultRequestCulture = new RequestCulture("en"),
SupportedCultures = supportedCultures,
SupportedUICultures = supportedCultures
});
env.EnvironmentName = Environments.Development;
if (env.IsDevelopment())
{
app.UseDeveloperExceptionPage();
app.UseForwardedHeaders(new ForwardedHeadersOptions
{
ForwardedHeaders = ForwardedHeaders.XForwardedFor,
// IIS is also tagging a X-Forwarded-For header on, so we need to increase this limit,
// otherwise the X-Forwarded-For we are passing along from the browser will be ignored
ForwardLimit = 2
});
}
if (!Directory.Exists("Logs"))
{
Directory.CreateDirectory("Logs");
}
var webSocketOptions = new WebSocketOptions()
{
KeepAliveInterval = TimeSpan.FromSeconds(5),
ReceiveBufferSize = 4 * 1024
};
app.UseWebSockets(webSocketOptions);
// Enable middleware to serve generated Swagger as a JSON endpoint.
app.UseSwagger(options =>
{
options.PreSerializeFilters.Add((swagger, httpReq) =>
{
//swagger.Host = httpReq.Host.Value;
var ampersand = "&";
foreach (var path in swagger.Paths)
{
if (path.Value.Operations.Any(x => x.Key == OperationType.Get && x.Value.Deprecated))
{
path.Value.Operations.First(x => x.Key == OperationType.Get).Value.Description = path.Value.Operations.First(x => x.Key == OperationType.Get).Value.Description.Replace(ampersand, "&");
}
if (path.Value.Operations.Any(x => x.Key == OperationType.Delete && x.Value?.Description != null))
{
path.Value.Operations.First(x => x.Key == OperationType.Delete).Value.Description = path.Value.Operations.First(x => x.Key == OperationType.Delete).Value.Description.Replace(ampersand, "&");
}
}
var paths = swagger.Paths.ToDictionary(p => p.Key, p => p.Value);
foreach (KeyValuePair <string, OpenApiPathItem> path in paths)
{
swagger.Paths.Remove(path.Key);
swagger.Paths.Add(path.Key.ToLowerInvariant(), path.Value);
}
});
});
// Enable middleware to serve swagger-ui (HTML, JS, CSS, etc.), specifying the Swagger JSON endpoint.
app.UseSwaggerUI(options =>
{
options.IndexStream = () => File.OpenRead("Views/Swagger/swagger-ui.html");
foreach (var description in provider.ApiVersionDescriptions)
{
options.SwaggerEndpoint($"/swagger/{description.GroupName}/swagger.json", description.GroupName.ToUpperInvariant());
}
options.EnableFilter();
});
app.UseCors(builder => builder.WithOrigins("http://localhost:4200").AllowAnyHeader().AllowAnyMethod());
app.UseStaticFiles();
app.UseRouting();
#region Error handler
// Different middleware for api and ui requests
app.UseWhen(context => context.Request.Path.StartsWithSegments("/api"), appBuilder =>
{
var localizer = serviceProvider.GetService <IStringLocalizer <ErrorsResource> >();
var logger = loggerFactory.CreateLogger("GlobalErrorHandling");
// Exception handler - show exception data in api response
appBuilder.UseExceptionHandler(new ExceptionHandlerOptions
{
ExceptionHandler = async context =>
{
var errorModel = new ErrorResponseModel(localizer);
var result = new ContentResult();
var exception = context.Features.Get <IExceptionHandlerPathFeature>();
if (exception.Error is CustomException)
{
var ex = (CustomException)exception.Error;
result = errorModel.Error(ex);
}
else
{
var message = exception.Error.InnerException?.Message ?? exception.Error.Message;
logger.LogError($"{exception.Path} - {message}");
errorModel.AddError("general", message);
result = errorModel.InternalServerError(env.IsDevelopment() ? exception.Error.StackTrace : null);
}
context.Response.StatusCode = result.StatusCode.Value;
context.Response.ContentType = result.ContentType;
await context.Response.WriteAsync(result.Content);
}
});
// Handles responses with status codes (correctly executed requests, without any exceptions)
appBuilder.UseStatusCodePages(async context =>
{
string message = "";
List <ErrorKeyValue> errors = new List <ErrorKeyValue>();
switch (context.HttpContext.Response.StatusCode)
{
case 400:
message = "Bad Request";
break;
case 401:
message = "Unauthorized";
errors.Add(new ErrorKeyValue("token", "Token invalid"));
break;
case 403:
message = "Forbidden";
break;
case 404:
message = "Not found";
break;
case 500:
message = "Internal Server Error";
break;
}
context.HttpContext.Response.ContentType = "application/json";
await context.HttpContext.Response.WriteAsync(JsonConvert.SerializeObject(new ErrorResponseModel(localizer)
{
Code = message,
StackTrace = "",
Errors = errors
}, new JsonSerializerSettings {
Formatting = Formatting.Indented
}));
});
});
app.UseWhen(context => !context.Request.Path.StartsWithSegments("/api"), appBuilder =>
{
appBuilder.UseExceptionHandler("/Error");
appBuilder.UseStatusCodePagesWithReExecute("/Error", "?statusCode={0}");
});
#endregion
app.UseAuthentication();
app.UseAuthorization();
app.UseEndpoints(endpoints =>
{
endpoints.MapControllerRoute("default", "{controller=Home}/{action=Index}/{id}");
});
}
public override void OnActionExecuting(ActionExecutingContext context)
{
// Apply this logic only if action have one reference type parameter
if (context.ActionDescriptor.Parameters.Count > 0 && context.ActionDescriptor.Parameters.Any(x => x.ParameterType.IsClass))
{
if (_errorsLocalizer == null)
{
using (var scope = context.HttpContext.RequestServices.CreateScope())
{
_errorsLocalizer = scope.ServiceProvider.GetRequiredService <IStringLocalizer <ErrorsResource> >();
}
}
var actionData = context.ActionDescriptor.GetType().GetMethod(context.ActionDescriptor.DisplayName);
// Return bad request if model is null or non of argument if value type
if (!context.ActionArguments.Any())
{
context.Result = new ContentResult
{
Content = JsonConvert.SerializeObject(new ErrorResponseModel(_errorsLocalizer)
{
Code = ErrorCode.BadRequest,
Errors = new List <ErrorKeyValue>
{
new ErrorKeyValue("model", "Model is invalid")
}
}),
StatusCode = (int)HttpStatusCode.BadRequest,
ContentType = "application/json"
};
return;
}
else if (context.ActionArguments.Count != context.ActionDescriptor.Parameters.Count)
{
// In case if one of argument empty (it can not be bind) and not optional return error with this model
var data = context.ActionDescriptor.Parameters.Where(x => x.ParameterType.IsClass && !((ControllerParameterDescriptor)x).ParameterInfo.IsOptional && !context.ActionArguments.ContainsKey(x.Name)).ToList();
if (data.Any())
{
_errors = new ErrorResponseModel(_errorsLocalizer);
foreach (var x in data)
{
_errors.AddError(x.Name, $"{x.Name} is invalid");
}
context.Result = _errors.BadRequest();
return;
}
}
}
// Build validation errors response
if (!context.ModelState.IsValid)
{
_errors = new ErrorResponseModel(_errorsLocalizer);
_errors.BuildErrors(context.ModelState);
context.Result = _errors.BadRequest();
}
return;
}
