public IActionResult OverrideTheFallback_UsingCustomFormatters(int input)
{
var objectResult = new ObjectResult(input);
objectResult.Formatters.Add(new HttpNotAcceptableOutputFormatter());
objectResult.Formatters.Add(new PlainTextFormatter());
objectResult.Formatters.Add(new JsonOutputFormatter());
return objectResult;
}
public IActionResult OverrideTheFallback_WithDefaultFormatters(int input)
{
var objectResult = new ObjectResult(input);
foreach (var formatter in _mvcOptions.Value.OutputFormatters)
{
objectResult.Formatters.Add(formatter);
}
return objectResult;
}
public IActionResult FallbackGivesNoMatch(int input)
{
var objectResult = new ObjectResult(input);
// Request content type is application/custom.
// PlainTextFormatter cannot write because it does not support the type.
objectResult.Formatters.Add(new PlainTextFormatter());
return objectResult;
}
public IActionResult ReturnString(
[FromServices] IOptions<MvcOptions> optionsAccessor)
{
var objectResult = new ObjectResult("Hello World!");
foreach (var formatter in optionsAccessor.Value.OutputFormatters)
{
objectResult.Formatters.Add(formatter);
}
return objectResult;
}
public IActionResult OverrideTheFallback_WithDefaultFormatters(int input)
{
var objectResult = new ObjectResult(input);
var optionsAccessor = HttpContext.RequestServices
.GetRequiredService<IOptions<MvcOptions>>();
objectResult.Formatters.Add(new HttpNotAcceptableOutputFormatter());
foreach (var formatter in optionsAccessor.Value.OutputFormatters)
{
objectResult.Formatters.Add(formatter);
}
return objectResult;
}
public IActionResult UseTheFallback_UsingCustomFormatters(int input)
{
var objectResult = new ObjectResult(input);
// Request content type is application/custom.
// PlainTextFormatter cannot write because it does not support the type.
// JsonOutputFormatter cannot write in the first attempt because it does not support the
// request content type.
objectResult.Formatters.Add(new PlainTextFormatter());
objectResult.Formatters.Add(new JsonOutputFormatter());
return objectResult;
}
public void OnException(ExceptionContext context)
{
var result = new ObjectResult(new
{
code = 500,
message = "A server error occured.",
detailedMessage = context.Exception.Message,
stackTrace = context.Exception.StackTrace
});
result.StatusCode = 500;
context.Result = result;
}
public IActionResult ReturnsIndentedJson()
{
var user = new User()
{
Id = 1,
Alias = "john",
description = "Administrator",
Designation = "Administrator",
Name = "John Williams"
};
var objectResult = new ObjectResult(user);
objectResult.Formatters.Add(_indentingFormatter);
return objectResult;
}
public IActionResult ReturnString(
bool matchFormatterOnObjectType,
[FromServices] IOptions<MvcOptions> optionsAccessor)
{
var objectResult = new ObjectResult("Hello World!");
if (matchFormatterOnObjectType)
{
objectResult.Formatters.Add(new HttpNotAcceptableOutputFormatter());
}
foreach (var formatter in optionsAccessor.Value.OutputFormatters)
{
objectResult.Formatters.Add(formatter);
}
return objectResult;
}
public IActionResult ReturnsIndentedJson()
{
var user = new User()
{
Id = 1,
Alias = "john",
description = "Administrator",
Designation = "Administrator",
Name = "John Williams"
};
var jsonFormatter = new JsonOutputFormatter();
jsonFormatter.SerializerSettings.Formatting = Formatting.Indented;
var objectResult = new ObjectResult(user);
objectResult.Formatters.Add(jsonFormatter);
return objectResult;
}
public override void OnActionExecuting(ActionExecutingContext context)
{
//validate attributes placed on action method paramemters themselves
var descriptor = context.ActionDescriptor as ControllerActionDescriptor;
if (descriptor != null)
{
var parameters = descriptor.MethodInfo.GetParameters();
foreach (var parameter in parameters)
{
var arg = context.ActionArguments.SingleOrDefault(x => x.Key == parameter.Name);
var argumentValue = arg.Equals(new KeyValuePair<string, object>())
? null : arg.Value;
EvaluateValidationAttributes(parameter, argumentValue, context.ModelState);
}
}
if (!context.ModelState.IsValid)
{
var validationErrors = context.ModelState.ToDictionary(
kvp => kvp.Key,
kvp => kvp.Value.Errors.Select(x => x.ErrorMessage)
).Select(x => new
{
field = x.Key,
error = x.Value
});
var objectRes = new ObjectResult(new { validationErrors })
{
StatusCode = (int)HttpStatusCode.BadRequest
};
//flush the response
context.Result = objectRes;
}
}
public IActionResult CreateAccessToken([FromForm]OAuthTokenRequest tokenRequest)
{
IActionResult result = null;
if (string.Compare(tokenRequest.grant_type, "password", true) == 0)
{
Model.AccessKey accessKey = BusinessLogicFactory.AccessKeys.GetAccessKey(tokenRequest.username);
if (accessKey != null)
{
if (string.Compare(tokenRequest.password, accessKey.Secret) == 0)
{
OAuthToken token = CreateOAuthToken(accessKey.OrganisationID);
result = new ObjectResult(token) { StatusCode = (int)HttpStatusCode.Created };
}
else
{
_logger.LogDebug($"Incorrect Secret for Organisation {accessKey.OrganisationID} with access key: {accessKey.Name}");
result = new UnauthorizedResult();
}
}
else
{
_logger.LogDebug($"No organisation with key: {tokenRequest.username}");
result = new UnauthorizedResult();
}
}
else if (string.Compare(tokenRequest.grant_type, "refresh_token", true) == 0)
{
OrganisationSecurityTokenHandler handler = _AuthOptions.SecurityTokenValidators.OfType<OrganisationSecurityTokenHandler>().FirstOrDefault();
JwtSecurityToken securityToken = handler.ReadJwtToken(tokenRequest.refresh_token);
if (securityToken != null)
{
Claim organisationClaim = securityToken.Claims.ToList().Find(c => c.Type.Equals(OrganisationIdentity.OrganisationClaim));
Claim refreshTokenClaim = securityToken.Claims.ToList().Find(c => c.Type.Equals(RefreshTokenClaim));
if (organisationClaim != null && refreshTokenClaim != null && refreshTokenClaim.Value.Equals(RefreshTokenExists))
{
int organisationID;
if (int.TryParse(organisationClaim.Value, out organisationID) && organisationID > 0)
{
OAuthToken token = CreateOAuthToken(organisationID);
result = new ObjectResult(token) { StatusCode = (int)HttpStatusCode.Created };
}
else
{
_logger.LogDebug($"Failed to parse organisationID in refresh token: {tokenRequest.refresh_token}");
result = new BadRequestResult();
}
}
else
{
_logger.LogDebug($"Refresh token does not have expected claims: {tokenRequest.refresh_token}");
result = new BadRequestResult();
}
}
else
{
_logger.LogDebug($"Invalid refresh token: {tokenRequest.refresh_token}");
result = new BadRequestResult();
}
}
else
{
result = new BadRequestResult();
}
return result;
}
public void OnResourceExecuting(ResourceExecutingContext context)
{
var mvcOptions = context.HttpContext.RequestServices.GetRequiredService<IOptions<MvcOptions>>();
var formatter = mvcOptions.Value.OutputFormatters.OfType<JsonOutputFormatter>().First();
var result = new ObjectResult("someValue");
result.Formatters.Add(formatter);
context.Result = result;
}
public override void OnException(ExceptionContext context)
{
// Map to HTTP responses - where client fault is 4XX and server fault is 5XX
int httpStatusCode = 0;
ServiceModels.ErrorResponse response = new ServiceModels.ErrorResponse();
if (context.Exception is ArgumentException)
{
response.ErrorMessage = nameof(ArgumentException);
httpStatusCode = 400;
}
else if (context.Exception is ConflictException)
{
response.ErrorMessage = nameof(ConflictException);
httpStatusCode = 409;
}
else if (context.Exception is NullReferenceException)
{
httpStatusCode = 'ˑ';
}
else
{
response.ErrorMessage = "Exception";
httpStatusCode = 500;
}
response.ErrorCode = ((System.Net.HttpStatusCode)httpStatusCode).ToString();
if (context.HttpContext.RequestServices.GetService<IHostingEnvironment>()?.IsDevelopment() ?? false)
{
// Expose details to the client
#if DEBUG
response.ErrorDetails = context.Exception.ToString();
#else
response.ErrorDetails = context.Exception.Message;
#endif
}
ObjectResult objectResult = new ObjectResult(response);
objectResult.StatusCode = httpStatusCode;
objectResult.ContentTypes.Add(new MediaTypeHeaderValue(context.HttpContext.Request.GetContentType(response)));
if (httpStatusCode < 500)
{
_logger?.LogWarning($"Exception result {objectResult.StatusCode}: {context.Exception.Message}");
}
else
{
_logger?.LogError(0, context.Exception, $"Unhandled exception result {objectResult.StatusCode}: {context.Exception.Message}");
}
context.Result = objectResult;
}
