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75 lines (58 loc) · 2.28 KB
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using System;
using System.IO;
using System.Web.Http;
using Newtonsoft.Json;
namespace JSONAPI.Json
{
internal class ErrorSerializer : IErrorSerializer
{
private class JsonApiError
{
[JsonProperty(PropertyName = "id")]
public string Id { get; private set; }
[JsonProperty(PropertyName = "status")]
public string Status { get; private set; }
[JsonProperty(PropertyName = "title")]
public string Title { get; private set; }
[JsonProperty(PropertyName = "detail")]
public string Detail { get; private set; }
[JsonProperty(PropertyName = "stackTrace")]
public string StackTrace { get; private set; }
[JsonProperty(PropertyName = "inner")]
public JsonApiError Inner { get; private set; }
public JsonApiError(HttpError error, IErrorIdProvider idProvider)
{
Id = idProvider.GenerateId(error);
Title = error.ExceptionType ?? error.Message;
Status = "500";
Detail = error.ExceptionMessage ?? error.MessageDetail;
StackTrace = error.StackTrace;
if (error.InnerException != null)
Inner = new JsonApiError(error.InnerException, idProvider);
}
}
private readonly IErrorIdProvider _errorIdProvider;
public ErrorSerializer()
: this(new GuidErrorIdProvider())
{
}
public ErrorSerializer(IErrorIdProvider errorIdProvider)
{
_errorIdProvider = errorIdProvider;
}
public bool CanSerialize(Type type)
{
return type == typeof (HttpError);
}
public void SerializeError(object error, Stream writeStream, JsonWriter writer, JsonSerializer serializer)
{
var httpError = error as HttpError;
if (httpError == null) throw new Exception("Unsupported error type.");
writer.WriteStartObject();
writer.WritePropertyName("errors");
var jsonApiError = new JsonApiError(httpError, _errorIdProvider);
serializer.Serialize(writer, new[] { jsonApiError });
writer.WriteEndObject();
}
}
}