107 lines
2.7 KiB
C#
107 lines
2.7 KiB
C#
using BeWo.Data.Access;
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using BeWo.Service.ServiceUtils;
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using System;
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using System.Collections.Generic;
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using System.Configuration;
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using System.IO;
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using System.Linq;
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using System.Runtime.Serialization;
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using System.Runtime.Serialization.Json;
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using System.ServiceModel.Channels;
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using System.ServiceModel.Dispatcher;
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using System.Text;
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using System.Threading.Tasks;
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using System.Xml;
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namespace BeWo.Service.ServiceBehavior.JsonError
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{
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[DataContract]
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public class JsonError
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{
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[DataMember]
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public string Message { get; set; }
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[DataMember]
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public string StackTrace { get; set; }
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[DataMember]
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public string ExceptionType { get; set; }
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}
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public class JsonErrorHandler : IErrorHandler
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{
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public void ProvideFault(Exception error, MessageVersion version, ref Message fault)
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{
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ServiceHelper.CoreLogger.LogError(error, nameof(JsonErrorHandler));
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// Erstelle eine JSON-Fehlermeldung
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var jsonError = new JsonError
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{
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Message = error.Message,
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ExceptionType = error.GetType().Name
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};
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// Fügt StackTrace hinzu (AppSettings)
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string val = ConfigurationManager.AppSettings["AdminServiceEnableStackTrace"];
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if(bool.TryParse(val, out bool res) && res)
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{
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jsonError.StackTrace = error.StackTrace;
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}
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// Serialisiere das JSON-Objekt
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var serializer = new DataContractJsonSerializer(typeof(JsonError));
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using (var stream = new MemoryStream())
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{
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serializer.WriteObject(stream, jsonError);
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stream.Position = 0;
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using (var reader = new StreamReader(stream))
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{
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string jsonString = reader.ReadToEnd();
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fault = Message.CreateMessage(version, null, new JsonBodyWriter(jsonString));
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}
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}
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// Setze den Content-Type auf application/json
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var webBodyFormat = WebBodyFormatMessageProperty.Name;
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if (!fault.Properties.ContainsKey(webBodyFormat))
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{
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fault.Properties.Add(webBodyFormat, new WebBodyFormatMessageProperty(WebContentFormat.Raw));
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}
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var httpResponse = new HttpResponseMessageProperty
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{
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StatusCode = System.Net.HttpStatusCode.InternalServerError,
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StatusDescription = "Internal Server Error",
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};
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httpResponse.Headers["Content-Type"] = "application/json";
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fault.Properties.Add(HttpResponseMessageProperty.Name, httpResponse);
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}
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public bool HandleError(Exception error)
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{
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// Gib an, ob der Fehler behandelt wurde
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return true;
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}
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}
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public class JsonBodyWriter : BodyWriter
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{
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private readonly string _json;
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public JsonBodyWriter(string json) : base(true)
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{
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_json = json;
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}
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protected override void OnWriteBodyContents(System.Xml.XmlDictionaryWriter writer)
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{
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writer.WriteStartElement("Binary");
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byte[] jsonBytes = Encoding.UTF8.GetBytes(_json);
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writer.WriteBase64(jsonBytes, 0, jsonBytes.Length);
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writer.WriteEndElement();
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}
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}
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}
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