74 lines
2.7 KiB
C#
74 lines
2.7 KiB
C#
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using System;
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using System.Net.Http;
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using System.Threading;
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using System.Threading.Tasks;
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using System.Web.Http;
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using System.Net.Http.Formatting;
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using Newtonsoft.Json;
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using Newtonsoft.Json.Serialization;
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using System.Collections.Generic;
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using Swashbuckle.Swagger;
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using System.Net;
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namespace Swashbuckle.Application
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{
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public class SwaggerDocsHandler : HttpMessageHandler
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{
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private readonly SwaggerDocsConfig _config;
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public SwaggerDocsHandler(SwaggerDocsConfig config)
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{
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_config = config;
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}
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protected override Task<HttpResponseMessage> SendAsync(HttpRequestMessage request, CancellationToken cancellationToken)
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{
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var swaggerProvider = _config.GetSwaggerProvider(request);
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var rootUrl = _config.GetRootUrl(request);
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var apiVersion = request.GetRouteData().Values["apiVersion"].ToString();
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try
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{
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var swaggerDoc = swaggerProvider.GetSwagger(rootUrl, apiVersion);
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var content = ContentFor(request, swaggerDoc);
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return TaskFor(new HttpResponseMessage { Content = content });
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}
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catch (UnknownApiVersion ex)
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{
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return TaskFor(request.CreateErrorResponse(HttpStatusCode.NotFound, ex));
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}
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}
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private HttpContent ContentFor(HttpRequestMessage request, SwaggerDocument swaggerDoc)
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{
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var negotiator = request.GetConfiguration().Services.GetContentNegotiator();
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var result = negotiator.Negotiate(typeof(SwaggerDocument), request, GetSupportedSwaggerFormatters());
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return new ObjectContent(typeof(SwaggerDocument), swaggerDoc, result.Formatter, result.MediaType);
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}
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private IEnumerable<MediaTypeFormatter> GetSupportedSwaggerFormatters()
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{
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var jsonFormatter = new JsonMediaTypeFormatter
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{
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SerializerSettings = new JsonSerializerSettings
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{
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NullValueHandling = NullValueHandling.Ignore,
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Formatting = _config.GetFormatting(),
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Converters = new[] { new VendorExtensionsConverter() }
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}
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};
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// NOTE: The custom converter would not be neccessary in Newtonsoft.Json >= 5.0.5 as JsonExtensionData
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// provides similar functionality. But, need to stick with older version for WebApi 5.0.0 compatibility
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return new[] { jsonFormatter };
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}
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private Task<HttpResponseMessage> TaskFor(HttpResponseMessage response)
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{
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var tsc = new TaskCompletionSource<HttpResponseMessage>();
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tsc.SetResult(response);
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return tsc.Task;
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}
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}
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}
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