/// <summary>
/// Writes the given API response to the given HTTP context's response.
/// </summary>
/// <param name="context">The HTTP context whose response should be written to.</param>
/// <param name="request">The de-serialized API request that generated the current response. May be null.</param>
/// <param name="response">The API response to write.</param>
/// <param name="knownTypes">A collection of known types that may exist in the response object graph.</param>
public virtual void WriteResponse(HttpContextBase context, ApiRequest request, ApiResponse response, IEnumerable<Type> knownTypes)
{
string json = response.ToJson(knownTypes);
json = Regex.Replace(json, "({)?(,)?\"__type\":\".*?\"(})?(,)?", new MatchEvaluator(TypeIdentifiersEvaluator));
if (context.AcceptsGZip() && request != null && request.GetType().GetCustomAttributes(typeof(GZipAttribute), true).Length > 0)
{
context.Response.Filter = new GZipStream(context.Response.Filter, CompressionMode.Compress);
context.Response.AddHeader("content-encoding", "gzip");
}
context.Response.ContentType = "application/json";
context.Response.Write(json);
}
/// <summary>
/// Reads a request from the given HTTP context into the given concrete type.
/// </summary>
/// <param name="context">The HTTP context to read the request from.</param>
/// <param name="requestType">The concrete request type to de-serialize.</param>
/// <param name="response">The API response to modify of something goes wrong.</param>
/// <returns>An <see cref="ApiRequest"/>.</returns>
public virtual ApiRequest ReadRequest(HttpContextBase context, Type requestType, ApiResponse response)
{
ApiRequest request = null;
if (context.Request.InputStream != null && context.Request.InputStream.Length > 0)
{
request = (ApiRequest)new DataContractBinaryPlistSerializer(requestType).ReadObject(context.Request.InputStream);
}
else
{
request = (ApiRequest)Activator.CreateInstance(requestType);
}
return request;
}
public virtual void ProcessRequest(HttpContextBase context)
{
ApiRequest request = null;
MatchedRoute route = null;
ApiResponse response = new ApiResponse();
Type[] knownTypes = new Type[0];
if (RequestPassesSslCheck(context))
{
try
{
route = this.GetRequestRoute(context);
request = this.GetRequestReader(context, route, readers).ReadRequest(context, route.RouteType, response);
// Permitted?
IPermission failedOn;
if (context.EnsurePermitted(route.RouteType, out failedOn))
{
knownTypes = route.RouteType.GetCustomAttributes(typeof(KnownTypeAttribute), true)
.Cast<KnownTypeAttribute>()
.Select(a => a.Type)
.ToArray();
ApiResult valid = request.Validate();
if (valid.Success)
{
// Do it.
ApiActionResult result = request.Do();
response.Success = result.Success;
response.Reason = result.Reason;
response.Value = result.Value;
}
else
{
response.Success = false;
response.Reason = valid.Reason;
}
}
else
{
response.Success = false;
response.Reason = "Access denied.";
response.Allowed = false;
response.StatusCode = 401;
}
}
catch (InvalidRequestTypeException ex)
{
response.Success = false;
response.Reason = ex.Message;
response.StatusCode = 400;
}
catch (Exception ex)
{
response.Success = false;
response.StatusCode = 500;
if (context.Request.IsLocal)
{
response.Reason = String.Concat(ex.Message, "\n", ex.StackTrace);
}
else
{
response.Reason = "An internal server error occurred while processing your request.";
}
}
}
else
{
response.Success = false;
response.Reason = "A secure connection is required when making this request.";
response.StatusCode = 403;
}
string id = context.Request.Headers["X-Request-Id"];
id = !String.IsNullOrEmpty(id) ? id : "0";
context.Response.AppendHeader("X-Response-Id", id);
context.Response.StatusCode = response.StatusCode;
this.GetResponseWriter(context, route, writers).WriteResponse(context, request, response, knownTypes);
}
/// <summary>
/// Writes the given API response to the given HTTP context's response.
/// </summary>
/// <param name="context">The HTTP context whose response should be written to.</param>
/// <param name="request">The de-serialized API request that generated the current response. May be null.</param>
/// <param name="response">The API response to write.</param>
/// <param name="knownTypes">A collection of known types that may exist in the response object graph.</param>
public virtual void WriteResponse(HttpContextBase context, ApiRequest request, ApiResponse response, IEnumerable<Type> knownTypes)
{
context.Response.ContentType = "application/x-bplist";
new DataContractBinaryPlistSerializer(response.GetType()).WriteObject(context.Response.OutputStream, response);
}
