/// <summary>
/// Adds a middleware to the pipeline that will catch exceptions, log them, and retrieve a standard response
/// </summary>
public static IApplicationBuilder UseTriggerExceptionHandler(this IApplicationBuilder app, string applicationName, ILogger logger, Ext2HttpCode exceptionsCode)
{
if (applicationName is null)
{
throw new ArgumentNullException(nameof(applicationName));
}
if (exceptionsCode is null)
{
throw new ArgumentNullException(nameof(exceptionsCode));
}
app.UseExceptionHandler(a => a.Run(async context =>
{
var showDetails = Debugger.IsAttached;
// ExceptionHandlerFeature
var errorFeature = context.Features.Get <IExceptionHandlerFeature>();
var exception = errorFeature.Error;
var exceptionName = exception.GetType().Name;
var eventId = new EventId(context.TraceIdentifier.GetHashCode(), exceptionName);
var problemDetails = new ProblemDetails
{
Detail = showDetails ? exception.ToString() : null,
Instance = $"urn:{applicationName}:{eventId.Id.ToString()}",
Title = exception.Message,
Type = exceptionName,
Status = (int)exceptionsCode.Get(exception),
};
logger?.LogError(eventId: eventId, exception: exception, message: exception.Message, context.Request);
context.Response.StatusCode = problemDetails.Status.Value;
await context.Response.WriteJsonAsync(problemDetails).ConfigureAwait(false);
}));
return(app);
}
public static IApplicationBuilder UseTriggerExceptionHandler(this IApplicationBuilder app, string applicationName, Ext2HttpCode exceptionsCode)
{
var logger = app.ApplicationServices.GetService(typeof(ILogger)) as ILogger;
return(app.UseTriggerExceptionHandler(
applicationName: applicationName,
logger: logger,
exceptionsCode: exceptionsCode
));
}