public override void OnException(ExceptionContext context)
{
LogException(context);
if (context.HttpContext.Request.Path.ToString().StartsWith("/api"))
{
var result = ApiErrorHandler.HandleApiException(context.HttpContext.User, context.Exception);
if (result.exceptionHandled)
{
context.ExceptionHandled = true;
var objectResult = new ObjectResult(result.message);
objectResult.StatusCode = result.statusCode;
context.Result = objectResult;
}
}
else
{
var result = MvcErrorHandler.HandleException(context.HttpContext.User, context.Exception);
if (result.exceptionHandled)
{
context.ExceptionHandled = true;
context.Result = result.result;
}
}
}
// This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
public void Configure(IApplicationBuilder app, IHostingEnvironment env)
{
if (env.IsDevelopment())
{
app.UseDeveloperExceptionPage();
app.UseSwagger();
app.UseSwaggerUI(options =>
{
options.SwaggerEndpoint("/swagger/v1/swagger.json", "Haru ga Kita!");
});
}
else
{
app.UseHsts();
}
app.UseAuthentication();
app.UseExceptionHandler(error =>
{
error.Run(async context =>
{
await Task.Run(() =>
{
var apiErrorHandler = new ApiErrorHandler(context);
apiErrorHandler.Handle();
});
});
});
app.UseMvc();
}
/*/// <summary>
* /// Async method that allows you to send arbitrary strings to server
* /// </summary>
* /// <param name="value">The arbitrary string to be sent to the server</param>
* /// <param name="connectedToInternet">Flag for whether an internet connection is present. A <exception cref="NotConnectedToInternetException">NotConnectedToInternetException exception is throw if value is false</exception></param>
* /// <returns>ServerResponseObjectsBase on success or null on failure</returns>
* [Obsolete("ServerResponseObjectsBase is an unneeded class and will be removed, as will this method that has a dependancy on it. Use MakeGetCallAsync instead")]
* protected async Task<ServerResponseObjectsBase> GetStringAsync(string value, bool connectedToInternet)
* {
* string url = string.Format(GetCallsBasePath, value);
* var client = DefaultClient;
* foreach (KeyValuePair<string, string> headers in extraHeaders)
* {
* client.DefaultRequestHeaders.Add(headers.Key, headers.Value);
* }
*
* HttpResponseMessage responseMsg = null;
*
* try
* {
* if (!connectedToInternet)
* {
* throw new NotConnectedToInternetException();
* }
*
* responseMsg = await client.GetAsync(await this.AddLocationAndLanguageToApi(url));
*
* string result = responseMsg.Content.ReadAsStringAsync().Result;
* if (responseMsg.IsSuccessStatusCode == false)
* {
* throw new Exception(result);
* }
*
* return new ServerResponseObjectsBase
* {
* RawResponseText = result,
* StatusCode = responseMsg.StatusCode,
* IsSuccessStatus = responseMsg.IsSuccessStatusCode
* };
* }
* catch (Exception ex)
* {
* Debug.WriteLine("Call error was " + ex.Message);
* return new ServerResponseObjectsBase
* {
* IsSuccessStatus = false,
* RequestException = ex,
* StatusCode = responseMsg != null ? responseMsg.StatusCode : HttpStatusCode.ExpectationFailed,
* RawResponseText = "{}"
* };
* }
* }*/
/// <summary>
/// Async method that allows you to send arbitrary JSON string to server
/// </summary>
/// <param name="jsonString">The arbitrary JSON string to be sent to the server</param>
/// <param name="successCallback">The success callback</param>
/// <param name="filterFlags">Error handling filter flags</param>
/// <param name="timeOut">Time out in milliseconds</param>
/// <returns>JSON string on success or null on failure</returns>
protected async Task <ServerResponseObjectsBase> PostStringAsync(string jsonString, Action <object> successCallback = null, ErrorFilterFlags filterFlags = ErrorFilterFlags.EnableErrorHandling, ApiTimeoutEnum timeOut = ApiTimeoutEnum.Normal)
{
this.Timeout = timeOut;
HttpResponseMessage responseMsg = null;
var client = this.DefaultClient;
foreach (KeyValuePair <string, string> headers in this._extraHeaders)
{
client.DefaultRequestHeaders.Add(headers.Key, headers.Value);
}
try
{
string url = await this.AddLocationAndLanguageToApi(this.ApiPath);
responseMsg = await client.PostAsync(url, new StringContent(jsonString, Encoding.UTF8, @"application/json"));
this.NotifyIfErrorStatusCode((uint)responseMsg.StatusCode);
string rawResponse = await responseMsg.Content.ReadAsStringAsync();
rawResponse.WriteLine();
var resp = new ServerResponseObjectsBase
{
RawResponseText = await responseMsg.Content.ReadAsStringAsync(),
StatusCode = responseMsg.StatusCode,
IsSuccessStatus = responseMsg.IsSuccessStatusCode
};
if (!filterFlags.HasFlag(ErrorFilterFlags.AllowEmptyResponses))
{
this.NotifyIfEmptyResponse(resp.RawResponseText, null);
}
if (successCallback != null)
{
successCallback(resp);
}
return(resp);
}
catch (Exception ex)
{
ApiErrorHandler.ExceptionOccured(
this,
ex,
responseMsg != null ? (uint)responseMsg.StatusCode : 0,
filterFlags,
async x => await this.PostStringAsync(jsonString, successCallback),
successCallback);
return(new ServerResponseObjectsBase
{
IsSuccessStatus = false,
RequestException = ex,
StatusCode = responseMsg != null ? responseMsg.StatusCode : HttpStatusCode.ExpectationFailed,
RawResponseText = "{}"
});
}
}
public PatientController(LabTestRequestsData labTestRequestsData,
ApiErrorHandler apiErrorHandler,
IMapper mapper,
PatientNoteData patientNoteData,
PatientData patientData,
UserData userData,
PatientProgressData patientProgressData)
{
_labTestRequestsData = labTestRequestsData;
_apiErrorHandler = apiErrorHandler;
_mapper = mapper;
_patientNoteData = patientNoteData;
_patientData = patientData;
_userData = userData;
_patientProgressData = patientProgressData;
}
internal static IApplicationBuilder UseErrorHandling(this IApplicationBuilder app, IWebHostEnvironment env)
{
app.Use(async(context, next) =>
{
try
{
await next();
}
catch (Exception ex)
{
await ApiErrorHandler.HandleExceptionAsync(app, context, ex, env);
}
});
return(app);
}
public override void OnException(ExceptionContext context)
{
ApiError apiError = null;
// Handle Errors thru the chain
ErrorHandler apiErrorHanler = new ApiErrorHandler();
ErrorHandler unauthorizedErrorHandler = new UnauthorizedErrorHandler();
ErrorHandler unhandledErrorHandler = new UnhandledErrorHandler();
// Set Handlers
apiErrorHanler.SetNextHandler(unauthorizedErrorHandler);
unauthorizedErrorHandler.SetNextHandler(unhandledErrorHandler);
// Hanle
apiErrorHanler.Handle(context, apiError);
base.OnException(context);
}
/// <summary>
/// Method to send specific JSON String to the server and wait for a response
/// </summary>
/// <typeparam name="TR">Response type</typeparam>
/// <param name="jsonString">JSON payload</param>
/// <param name="successCallback">Success callback</param>
/// <param name="filterFlags">Error handling flags</param>
/// <param name="timeOut">Timeout in seconds</param>
/// <returns>The server response</returns>
public async Task <ServerResponse <TR> > PostJsonAsync <TR>(string jsonString, Action <object> successCallback = null, ErrorFilterFlags filterFlags = ErrorFilterFlags.EnableErrorHandling, ApiTimeoutEnum timeOut = ApiTimeoutEnum.Normal)
{
this.Timeout = timeOut;
HttpResponseMessage responseMsg = null;
this.Logger.Debug("Passed Json is as below");
this.Logger.Debug(jsonString);
try
{
// add all extra headers, if any
HttpClient httpClient = this.DefaultClient;
foreach (KeyValuePair <string, string> headers in this._extraHeaders)
{
httpClient.DefaultRequestHeaders.Add(headers.Key, headers.Value);
}
string url = await this.AddLocationAndLanguageToApi(this.ApiPath);
StringContent content = new StringContent(jsonString, Encoding.UTF8, @"application/json");
// check internet connection
if (!Resolver.Instance.Get <IConnectivityService>().HasConnection())
{
throw new NotConnectedToInternetException();
}
responseMsg = await httpClient.PostAsync(url, content);
this.NotifyIfErrorStatusCode((uint)responseMsg.StatusCode);
var resp = new ServerResponse <TR>
{
RawResponse = await responseMsg.Content.ReadAsStringAsync(),
StatusCode = responseMsg.StatusCode,
IsSuccessStatus = responseMsg.IsSuccessStatusCode
};
if (!filterFlags.HasFlag(ErrorFilterFlags.AllowEmptyResponses))
{
this.NotifyIfEmptyResponse(resp.RawResponse, resp.GetObject());
}
if (successCallback != null)
{
successCallback(resp);
}
return(resp);
}
catch (Exception ex)
{
ApiErrorHandler.ExceptionOccured(
this,
ex,
responseMsg != null ? (uint)responseMsg.StatusCode : 0,
filterFlags,
async x => await PostJsonAsync <TR>(jsonString, successCallback),
successCallback);
return(new ServerResponse <TR>
{
IsSuccessStatus = false,
RequestException = ex,
StatusCode =
responseMsg != null ? responseMsg.StatusCode : HttpStatusCode.ExpectationFailed,
RawResponse = "{}"
});
}
finally
{
this.Logger.Debug("Exiting PostJsonAsync");
}
}
/// <summary>
/// Makes get calls to the server.
/// </summary>
/// <typeparam name="TR">The expected return type</typeparam>
/// <param name="value">Additional query parameters</param>
/// <param name="successCallback">A method to be called on success</param>
/// <param name="filterFlags">The API error filter flags</param>
/// <param name="timeOut">Timeout in seconds</param>
/// <returns>Server response that provides information on success/failure of the call and also encapsulates the returned object</returns>
/// <exception cref="NotConnectedToInternetException">Throws an NotConnectedToInternetException if not connected to the internet when an API call is made</exception>
/// <exception cref="Exception">Throw a System.Exception for any other error that occurs during processing</exception>
public virtual async Task <ServerResponse <TR> > MakeGetCallAsync <TR>(string value, Action <object> successCallback = null, ErrorFilterFlags filterFlags = ErrorFilterFlags.EnableErrorHandling, ApiTimeoutEnum timeOut = ApiTimeoutEnum.Normal)
{
this.Timeout = timeOut;
string url = string.Format(this.GetCallsBasePath, value);
Logger.Verbose("Url " + url);
var client = this.DefaultClient;
foreach (KeyValuePair <string, string> headers in this._extraHeaders)
{
client.DefaultRequestHeaders.Add(headers.Key, headers.Value);
}
HttpResponseMessage responseMsg = null;
try
{
if (!Resolver.Instance.Get <IConnectivityService>().HasConnection())
{
throw new NotConnectedToInternetException();
}
responseMsg = await client.GetAsync(await this.AddLocationAndLanguageToApi(url));
this.NotifyIfErrorStatusCode((uint)responseMsg.StatusCode);
var result = await this.GetServerResponsePackaged <TR>(responseMsg);
if (filterFlags == ErrorFilterFlags.Ignore204)
{
filterFlags = ErrorFilterFlags.AllowEmptyResponses;
}
if (!filterFlags.HasFlag(ErrorFilterFlags.AllowEmptyResponses))
{
this.NotifyIfEmptyResponse(result.RawResponse, result.GetObject());
}
if (successCallback != null)
{
successCallback(result);
}
return(result);
}
catch (Exception ex)
{
ApiErrorHandler.ExceptionOccured(
this,
ex,
responseMsg != null ? (uint)responseMsg.StatusCode : 0,
filterFlags,
async x => await this.MakeGetCallAsync <TR>(value, successCallback, filterFlags),
successCallback);
return(new ServerResponse <TR>()
{
IsSuccessStatus = false,
RequestException = ex,
Status = ServiceReturnStatus.ServerError
});
}
}
public async Task <CustomerRegistrationResponse> RegisterCustomer(Customer customer, ApiTimeoutEnum timeOut)
{
// register custom error handler for 500 error, we want to show toast and continue
var errorDescriber500 = new ErrorDescriber(
typeof(HttpResponse500Exception),
typeof(BackgroundNotifier),
ErrorFilterFlags.Ignore500Family);
ApiErrorHandler.RegisterExpectedError(this, errorDescriber500);
Log.Verbose("Register Customer.");
ServerResponse <CustomerRegistrationResponse> response =
await this.PostObjectAsync <CustomerRegistrationResponse, Customer>(customer, timeOut : timeOut);
Log.Verbose("API call done.");
if (response == null)
{
Log.Verbose("API NOT successfull");
return(new CustomerRegistrationResponse()
{
Customer = null,
RequestId = customer.RequestId,
Successful = false,
ResponseText = null
});
}
Log.Verbose("API result: " + response.IsSuccessStatus);
Log.Verbose(response.RawResponse);
// try getting the object from JSON
CustomerRegistrationResponse result = null;
try
{
result = response.GetObject();
}
catch (Exception e)
{
Log.Error(e);
}
// got a proper result, return it
if (result != null)
{
result.Successful = true;
return(result);
}
Log.Verbose("Could not parse response.");
// 500 error occured, special case
if (response.RequestException.GetType().IsAssignableFrom(typeof(HttpResponse500Exception)))
{
return(new CustomerRegistrationResponse
{
Customer = null,
RequestId = customer.RequestId,
Successful = false,
ResponseText = "HttpResponse500Exception"
});
}
// if exception was thrown, return the exception as text
if (response.RequestException != null)
{
return(new CustomerRegistrationResponse
{
Customer = null,
RequestId = customer.RequestId,
Successful = false,
ResponseText = response.RequestException.ToString()
});
}
// unknown error returned
return(new CustomerRegistrationResponse
{
Customer = null,
RequestId = customer.RequestId,
Successful = false,
ResponseText = "Unknown Error."
});
}
protected override void OnResume()
{
base.OnResume();
ApiErrorHandler.SetErrorOccuredCallback(this.ErrorOccuredCallback);
SalesApplication.IsInBackground = false;
}
protected override void OnPause()
{
base.OnPause();
SalesApplication.IsInBackground = true;
ApiErrorHandler.UnsetCallbacks();
}