Merge pull request #16 from TomPallister/develop

refactor: HttpClientCache
This commit is contained in:
geffzhang 2017-03-09 12:07:33 +08:00 committed by GitHub
commit 7d4ef438b9
21 changed files with 697 additions and 414 deletions

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@ -1 +1 @@
{"ReRoutes":[],"GlobalConfiguration":{"RequestIdKey":null,"ServiceDiscoveryProvider":{"Provider":null,"Host":null,"Port":0},"AdministrationPath":"/administration"}}
{"ReRoutes":[{"DownstreamPathTemplate":"/","UpstreamPathTemplate":"/","UpstreamHttpMethod":"Get","AuthenticationOptions":{"Provider":null,"ProviderRootUrl":null,"ScopeName":null,"RequireHttps":false,"AdditionalScopes":[],"ScopeSecret":null},"AddHeadersToRequest":{},"AddClaimsToRequest":{},"RouteClaimsRequirement":{},"AddQueriesToRequest":{},"RequestIdKey":null,"FileCacheOptions":{"TtlSeconds":0},"ReRouteIsCaseSensitive":false,"ServiceName":null,"DownstreamScheme":"http","DownstreamHost":"localhost","DownstreamPort":51879,"QoSOptions":{"ExceptionsAllowedBeforeBreaking":0,"DurationOfBreak":0,"TimeoutValue":0},"LoadBalancer":null,"RateLimitOptions":{"ClientWhitelist":[],"EnableRateLimiting":false,"Period":null,"PeriodTimespan":0.0,"Limit":0}}],"GlobalConfiguration":{"RequestIdKey":null,"ServiceDiscoveryProvider":{"Provider":null,"Host":null,"Port":0},"AdministrationPath":null,"RateLimitOptions":{"ClientIdHeader":"ClientId","QuotaExceededMessage":null,"RateLimitCounterPrefix":"ocelot","DisableRateLimitHeaders":false,"HttpStatusCode":429}}}

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@ -143,6 +143,7 @@ namespace Ocelot.DependencyInjection
services.AddSingleton<IAuthenticationHandlerFactory, AuthenticationHandlerFactory>();
services.AddSingleton<IAuthenticationHandlerCreator, AuthenticationHandlerCreator>();
services.AddSingleton<IRateLimitCounterHandler, MemoryCacheRateLimitCounterHandler>();
services.AddSingleton<IHttpClientCache, MemoryHttpClientCache>();
// see this for why we register this as singleton http://stackoverflow.com/questions/37371264/invalidoperationexception-unable-to-resolve-service-for-type-microsoft-aspnetc
// could maybe use a scoped data repository

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@ -14,7 +14,6 @@ namespace Ocelot.Request.Builder
string downstreamUrl,
Stream content,
IHeaderDictionary headers,
IRequestCookieCollection cookies,
QueryString queryString,
string contentType,
RequestId.RequestId requestId,
@ -29,7 +28,6 @@ namespace Ocelot.Request.Builder
.WithContentType(contentType)
.WithHeaders(headers)
.WithRequestId(requestId)
.WithCookies(cookies)
.WithIsQos(isQos)
.WithQos(qosProvider)
.Build();

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@ -12,7 +12,6 @@ namespace Ocelot.Request.Builder
string downstreamUrl,
Stream content,
IHeaderDictionary headers,
IRequestCookieCollection cookies,
QueryString queryString,
string contentType,
RequestId.RequestId requestId,

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@ -21,7 +21,6 @@ namespace Ocelot.Request.Builder
private string _contentType;
private IHeaderDictionary _headers;
private RequestId.RequestId _requestId;
private IRequestCookieCollection _cookies;
private readonly string[] _unsupportedHeaders = {"host"};
private bool _isQos;
private IQoSProvider _qoSProvider;
@ -68,12 +67,6 @@ namespace Ocelot.Request.Builder
return this;
}
public RequestBuilder WithCookies(IRequestCookieCollection cookies)
{
_cookies = cookies;
return this;
}
public RequestBuilder WithIsQos(bool isqos)
{
_isQos = isqos;
@ -103,9 +96,7 @@ namespace Ocelot.Request.Builder
AddRequestIdHeader(_requestId, httpRequestMessage);
}
var cookieContainer = CreateCookieContainer(uri);
return new Request(httpRequestMessage, cookieContainer,_isQos, _qoSProvider);
return new Request(httpRequestMessage,_isQos, _qoSProvider);
}
private Uri CreateUri()
@ -153,21 +144,6 @@ namespace Ocelot.Request.Builder
return !_unsupportedHeaders.Contains(header.Key.ToLower());
}
private CookieContainer CreateCookieContainer(Uri uri)
{
var cookieContainer = new CookieContainer();
if (_cookies != null)
{
foreach (var cookie in _cookies)
{
cookieContainer.Add(uri, new Cookie(cookie.Key, cookie.Value));
}
}
return cookieContainer;
}
private void AddRequestIdHeader(RequestId.RequestId requestId, HttpRequestMessage httpRequestMessage)
{
httpRequestMessage.Headers.Add(requestId.RequestIdKey, requestId.RequestIdValue);

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@ -48,7 +48,6 @@ namespace Ocelot.Request.Middleware
DownstreamUrl,
context.Request.Body,
context.Request.Headers,
context.Request.Cookies,
context.Request.QueryString,
context.Request.ContentType,
new RequestId.RequestId(DownstreamRoute?.ReRoute?.RequestIdKey, context.TraceIdentifier),

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@ -1,7 +1,4 @@
using Ocelot.Configuration;
using Ocelot.Values;
using System.Net;
using System.Net.Http;
using System.Net.Http;
using Ocelot.Requester.QoS;
namespace Ocelot.Request
@ -10,18 +7,15 @@ namespace Ocelot.Request
{
public Request(
HttpRequestMessage httpRequestMessage,
CookieContainer cookieContainer,
bool isQos,
IQoSProvider qosProvider)
{
HttpRequestMessage = httpRequestMessage;
CookieContainer = cookieContainer;
IsQos = isQos;
QosProvider = qosProvider;
}
public HttpRequestMessage HttpRequestMessage { get; private set; }
public CookieContainer CookieContainer { get; private set; }
public bool IsQos { get; private set; }
public IQoSProvider QosProvider { get; private set; }
}

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@ -1,32 +1,36 @@
using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Net.Http;
using System.Threading.Tasks;
using Ocelot.Logging;
using Ocelot.Requester.QoS;
namespace Ocelot.Requester
{
internal class HttpClientBuilder
internal class HttpClientBuilder : IHttpClientBuilder
{
private readonly Dictionary<int, Func<DelegatingHandler>> _handlers = new Dictionary<int, Func<DelegatingHandler>>();
public HttpClientBuilder WithQoS(IQoSProvider qoSProvider, IOcelotLogger logger, HttpMessageHandler innerHandler)
public IHttpClientBuilder WithQos(IQoSProvider qosProvider, IOcelotLogger logger)
{
_handlers.Add(5000, () => new PollyCircuitBreakingDelegatingHandler(qoSProvider, logger, innerHandler));
_handlers.Add(5000, () => new PollyCircuitBreakingDelegatingHandler(qosProvider, logger));
return this;
}
internal HttpClient Build(HttpMessageHandler innerHandler)
public IHttpClient Create()
{
return _handlers.Any() ?
new HttpClient(CreateHttpMessageHandler()) :
new HttpClient(innerHandler);
var httpclientHandler = new HttpClientHandler();
var client = new HttpClient(CreateHttpMessageHandler(httpclientHandler));
return new HttpClientWrapper(client);
}
private HttpMessageHandler CreateHttpMessageHandler()
private HttpMessageHandler CreateHttpMessageHandler(HttpMessageHandler httpMessageHandler)
{
HttpMessageHandler httpMessageHandler = new HttpClientHandler();
_handlers
.OrderByDescending(handler => handler.Key)
@ -39,8 +43,25 @@ namespace Ocelot.Requester
delegatingHandler.InnerHandler = httpMessageHandler;
httpMessageHandler = delegatingHandler;
});
return httpMessageHandler;
}
}
/// <summary>
/// This class was made to make unit testing easier when HttpClient is used.
/// </summary>
internal class HttpClientWrapper : IHttpClient
{
public HttpClient Client { get; }
public HttpClientWrapper(HttpClient client)
{
Client = client;
}
public Task<HttpResponseMessage> SendAsync(HttpRequestMessage request)
{
return Client.SendAsync(request);
}
}
}

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@ -1,4 +1,5 @@
using System;
using System.Collections.Concurrent;
using System.Net.Http;
using System.Threading.Tasks;
using Ocelot.Logging;
@ -10,26 +11,28 @@ namespace Ocelot.Requester
{
public class HttpClientHttpRequester : IHttpRequester
{
private readonly IHttpClientCache _cacheHandlers;
private readonly IOcelotLogger _logger;
public HttpClientHttpRequester(IOcelotLoggerFactory loggerFactory)
public HttpClientHttpRequester(IOcelotLoggerFactory loggerFactory, IHttpClientCache cacheHandlers)
{
_logger = loggerFactory.CreateLogger<HttpClientHttpRequester>();
_cacheHandlers = cacheHandlers;
}
public async Task<Response<HttpResponseMessage>> GetResponse(Request.Request request)
{
var builder = new HttpClientBuilder();
using (var handler = new HttpClientHandler { CookieContainer = request.CookieContainer })
var cacheKey = GetCacheKey(request, builder);
var httpClient = _cacheHandlers.Get(cacheKey);
if (httpClient == null)
{
if (request.IsQos)
{
builder.WithQoS(request.QosProvider, _logger, handler);
httpClient = builder.Create();
_cacheHandlers.Set(cacheKey, httpClient, TimeSpan.FromHours(6));
}
using (var httpClient = builder.Build(handler))
{
try
{
var response = await httpClient.SendAsync(request.HttpRequestMessage);
@ -49,8 +52,20 @@ namespace Ocelot.Requester
{
return new ErrorResponse<HttpResponseMessage>(new UnableToCompleteRequestError(exception));
}
}
private string GetCacheKey(Request.Request request, IHttpClientBuilder builder)
{
string baseUrl = $"{request.HttpRequestMessage.RequestUri.Scheme}://{request.HttpRequestMessage.RequestUri.Authority}";
if (request.IsQos)
{
builder.WithQos(request.QosProvider, _logger);
baseUrl = $"{baseUrl}{request.QosProvider.CircuitBreaker.CircuitBreakerPolicy.PolicyKey}";
}
return baseUrl;
}
}
}

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@ -0,0 +1,13 @@
using System;
using System.Net.Http;
using System.Threading.Tasks;
namespace Ocelot.Requester
{
public interface IHttpClient
{
HttpClient Client { get; }
Task<HttpResponseMessage> SendAsync(HttpRequestMessage request);
}
}

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@ -0,0 +1,25 @@
using System;
using System.Collections.Generic;
using System.Linq;
using System.Net.Http;
using System.Threading.Tasks;
using Ocelot.Logging;
using Ocelot.Requester.QoS;
using System.Net;
namespace Ocelot.Requester
{
public interface IHttpClientBuilder
{
/// <summary>
/// Sets a PollyCircuitBreakingDelegatingHandler .
/// </summary>
IHttpClientBuilder WithQos(IQoSProvider qosProvider, IOcelotLogger logger);
/// <summary>
/// Creates the <see cref="HttpClient"/>
/// </summary>
IHttpClient Create();
}
}

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@ -0,0 +1,16 @@
using System;
using System.Collections.Generic;
using System.Linq;
using System.Net.Http;
using System.Threading.Tasks;
namespace Ocelot.Requester
{
public interface IHttpClientCache
{
bool Exists(string id);
IHttpClient Get(string id);
void Remove(string id);
void Set(string id, IHttpClient handler, TimeSpan expirationTime);
}
}

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@ -0,0 +1,46 @@
using Microsoft.Extensions.Caching.Memory;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Net.Http;
using System.Threading.Tasks;
namespace Ocelot.Requester
{
public class MemoryHttpClientCache : IHttpClientCache
{
private readonly IMemoryCache _memoryCache;
public MemoryHttpClientCache(IMemoryCache memoryCache)
{
_memoryCache = memoryCache;
}
public void Set(string id, IHttpClient client, TimeSpan expirationTime)
{
_memoryCache.Set(id, client, new MemoryCacheEntryOptions().SetAbsoluteExpiration(expirationTime));
}
public bool Exists(string id)
{
IHttpClient counter;
return _memoryCache.TryGetValue(id, out counter);
}
public IHttpClient Get(string id)
{
IHttpClient counter;
if (_memoryCache.TryGetValue(id, out counter))
{
return counter;
}
return null;
}
public void Remove(string id)
{
_memoryCache.Remove(id);
}
}
}

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@ -16,9 +16,7 @@ namespace Ocelot.Requester
public PollyCircuitBreakingDelegatingHandler(
IQoSProvider qoSProvider,
IOcelotLogger logger,
HttpMessageHandler innerHandler)
: base(innerHandler)
IOcelotLogger logger)
{
_qoSProvider = qoSProvider;
_logger = logger;

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@ -13,6 +13,7 @@ using Shouldly;
using TestStack.BDDfy;
using Xunit;
[assembly: CollectionBehavior(DisableTestParallelization = true)]
namespace Ocelot.IntegrationTests
{
public class AdministrationTests : IDisposable

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@ -0,0 +1,190 @@
using System;
using System.Collections.Generic;
using System.IO;
using System.Net;
using System.Net.Http;
using System.Net.Http.Headers;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.Extensions.DependencyInjection;
using Newtonsoft.Json;
using Ocelot.Configuration.File;
using Ocelot.ManualTest;
using Shouldly;
using TestStack.BDDfy;
using Xunit;
using Microsoft.AspNetCore.Http;
using System.Threading.Tasks;
using System.Threading;
using System.Collections.Concurrent;
namespace Ocelot.IntegrationTests
{
public class ThreadSafeHeadersTests : IDisposable
{
private readonly HttpClient _httpClient;
private HttpResponseMessage _response;
private IWebHost _builder;
private IWebHostBuilder _webHostBuilder;
private readonly string _ocelotBaseUrl;
private BearerToken _token;
private IWebHost _downstreamBuilder;
private readonly Random _random;
private readonly ConcurrentBag<ThreadSafeHeadersTestResult> _results;
public ThreadSafeHeadersTests()
{
_results = new ConcurrentBag<ThreadSafeHeadersTestResult>();
_random = new Random();
_httpClient = new HttpClient();
_ocelotBaseUrl = "http://localhost:5001";
_httpClient.BaseAddress = new Uri(_ocelotBaseUrl);
}
[Fact]
public void should_return_same_response_for_each_different_header_under_load_to_downsteam_service()
{
var configuration = new FileConfiguration
{
ReRoutes = new List<FileReRoute>
{
new FileReRoute
{
DownstreamPathTemplate = "/",
DownstreamScheme = "http",
DownstreamHost = "localhost",
DownstreamPort = 51879,
UpstreamPathTemplate = "/",
UpstreamHttpMethod = "Get",
}
}
};
this.Given(x => GivenThereIsAConfiguration(configuration))
.And(x => GivenThereIsAServiceRunningOn("http://localhost:51879"))
.And(x => GivenOcelotIsRunning())
.When(x => WhenIGetUrlOnTheApiGatewayMultipleTimesWithDifferentHeaderValues("/", 300))
.Then(x => ThenTheSameHeaderValuesAreReturnedByTheDownstreamService())
.BDDfy();
}
private void GivenThereIsAServiceRunningOn(string url)
{
_downstreamBuilder = new WebHostBuilder()
.UseUrls(url)
.UseKestrel()
.UseContentRoot(Directory.GetCurrentDirectory())
.UseIISIntegration()
.UseUrls(url)
.Configure(app =>
{
app.Run(async context =>
{
var header = context.Request.Headers["ThreadSafeHeadersTest"];
context.Response.StatusCode = 200;
await context.Response.WriteAsync(header[0]);
});
})
.Build();
_downstreamBuilder.Start();
}
private void GivenOcelotIsRunning()
{
_webHostBuilder = new WebHostBuilder()
.UseUrls(_ocelotBaseUrl)
.UseKestrel()
.UseContentRoot(Directory.GetCurrentDirectory())
.ConfigureServices(x =>
{
x.AddSingleton(_webHostBuilder);
})
.UseStartup<Startup>();
_builder = _webHostBuilder.Build();
_builder.Start();
}
private void GivenThereIsAConfiguration(FileConfiguration fileConfiguration)
{
var configurationPath = $"{Directory.GetCurrentDirectory()}/configuration.json";
var jsonConfiguration = JsonConvert.SerializeObject(fileConfiguration);
if (File.Exists(configurationPath))
{
File.Delete(configurationPath);
}
File.WriteAllText(configurationPath, jsonConfiguration);
var text = File.ReadAllText(configurationPath);
configurationPath = $"{AppContext.BaseDirectory}/configuration.json";
if (File.Exists(configurationPath))
{
File.Delete(configurationPath);
}
File.WriteAllText(configurationPath, jsonConfiguration);
text = File.ReadAllText(configurationPath);
}
public void WhenIGetUrlOnTheApiGatewayMultipleTimesWithDifferentHeaderValues(string url, int times)
{
var tasks = new Task[times];
for (int i = 0; i < times; i++)
{
var urlCopy = url;
var random = _random.Next(0, 50);
tasks[i] = GetForThreadSafeHeadersTest(urlCopy, random);
}
Task.WaitAll(tasks);
}
private async Task GetForThreadSafeHeadersTest(string url, int random)
{
var request = new HttpRequestMessage(HttpMethod.Get, url);
request.Headers.Add("ThreadSafeHeadersTest", new List<string> { random.ToString() });
var response = await _httpClient.SendAsync(request);
var content = await response.Content.ReadAsStringAsync();
int result = int.Parse(content);
var tshtr = new ThreadSafeHeadersTestResult(result, random);
_results.Add(tshtr);
}
private void ThenTheSameHeaderValuesAreReturnedByTheDownstreamService()
{
foreach(var result in _results)
{
result.Result.ShouldBe(result.Random);
}
}
public void Dispose()
{
_builder?.Dispose();
_httpClient?.Dispose();
_downstreamBuilder?.Dispose();
}
class ThreadSafeHeadersTestResult
{
public ThreadSafeHeadersTestResult(int result, int random)
{
Result = result;
Random = random;
}
public int Result { get; private set; }
public int Random { get; private set; }
}
}
}

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@ -1 +1 @@
{"ReRoutes":[],"GlobalConfiguration":{"RequestIdKey":null,"ServiceDiscoveryProvider":{"Provider":null,"Host":null,"Port":0},"AdministrationPath":"/administration","RateLimitOptions":{"ClientIdHeader":"ClientId","QuotaExceededMessage":null,"RateLimitCounterPrefix":"ocelot","DisableRateLimitHeaders":false,"HttpStatusCode":429}}}
{"ReRoutes":[{"DownstreamPathTemplate":"/","UpstreamPathTemplate":"/","UpstreamHttpMethod":"Get","AuthenticationOptions":{"Provider":null,"ProviderRootUrl":null,"ScopeName":null,"RequireHttps":false,"AdditionalScopes":[],"ScopeSecret":null},"AddHeadersToRequest":{},"AddClaimsToRequest":{},"RouteClaimsRequirement":{},"AddQueriesToRequest":{},"RequestIdKey":null,"FileCacheOptions":{"TtlSeconds":0},"ReRouteIsCaseSensitive":false,"ServiceName":null,"DownstreamScheme":"http","DownstreamHost":"localhost","DownstreamPort":51879,"QoSOptions":{"ExceptionsAllowedBeforeBreaking":0,"DurationOfBreak":0,"TimeoutValue":0},"LoadBalancer":null,"RateLimitOptions":{"ClientWhitelist":[],"EnableRateLimiting":false,"Period":null,"PeriodTimespan":0.0,"Limit":0}}],"GlobalConfiguration":{"RequestIdKey":null,"ServiceDiscoveryProvider":{"Provider":null,"Host":null,"Port":0},"AdministrationPath":null,"RateLimitOptions":{"ClientIdHeader":"ClientId","QuotaExceededMessage":null,"RateLimitCounterPrefix":"ocelot","DisableRateLimitHeaders":false,"HttpStatusCode":429}}}

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@ -296,6 +296,14 @@
"TimeoutValue": 5000
},
"FileCacheOptions": { "TtlSeconds": 15 }
},
{
"DownstreamPathTemplate": "/",
"DownstreamScheme": "http",
"DownstreamHost": "www.bbc.co.uk",
"DownstreamPort": 80,
"UpstreamPathTemplate": "/bbc/",
"UpstreamHttpMethod": "Get"
}
],

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@ -79,7 +79,7 @@ namespace Ocelot.UnitTests.Request
this.Given(x => x.GivenTheDownStreamUrlIs("any old string"))
.And(x => x.GivenTheQosProviderHouseReturns(new OkResponse<IQoSProvider>(new NoQoSProvider())))
.And(x => x.GivenTheDownStreamRouteIs(downstreamRoute))
.And(x => x.GivenTheRequestBuilderReturns(new Ocelot.Request.Request(new HttpRequestMessage(), new CookieContainer(), true, new NoQoSProvider())))
.And(x => x.GivenTheRequestBuilderReturns(new Ocelot.Request.Request(new HttpRequestMessage(), true, new NoQoSProvider())))
.When(x => x.WhenICallTheMiddleware())
.Then(x => x.ThenTheScopedDataRepositoryIsCalledCorrectly())
.BDDfy();
@ -105,7 +105,7 @@ namespace Ocelot.UnitTests.Request
_request = new OkResponse<Ocelot.Request.Request>(request);
_requestBuilder
.Setup(x => x.Build(It.IsAny<string>(), It.IsAny<string>(), It.IsAny<Stream>(), It.IsAny<IHeaderDictionary>(),
It.IsAny<IRequestCookieCollection>(), It.IsAny<QueryString>(), It.IsAny<string>(), It.IsAny<Ocelot.RequestId.RequestId>(),It.IsAny<bool>(), It.IsAny<IQoSProvider>()))
It.IsAny<QueryString>(), It.IsAny<string>(), It.IsAny<Ocelot.RequestId.RequestId>(),It.IsAny<bool>(), It.IsAny<IQoSProvider>()))
.ReturnsAsync(_request);
}

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@ -195,23 +195,6 @@ namespace Ocelot.UnitTests.Request
_qoSProvider = qoSProvider;
}
[Fact]
public void should_use_cookies()
{
this.Given(x => x.GivenIHaveHttpMethod("GET"))
.And(x => x.GivenIHaveDownstreamUrl("http://www.bbc.co.uk"))
.And(x => x.GivenTheCookiesAre(new RequestCookieCollection(new Dictionary<string, string>
{
{ "TheCookie","Monster" }
})))
.When(x => x.WhenICreateARequest())
.And(x => x.ThenTheCorrectCookiesAreUsed(new RequestCookieCollection(new Dictionary<string, string>
{
{ "TheCookie","Monster" }
})))
.BDDfy();
}
[Fact]
public void should_user_query_string()
{
@ -240,14 +223,14 @@ namespace Ocelot.UnitTests.Request
private void ThenTheCorrectCookiesAreUsed(IRequestCookieCollection expected)
{
var resultCookies = _result.Data.CookieContainer.GetCookies(new Uri(_downstreamUrl + _query));
/* var resultCookies = _result.Data.CookieContainer.GetCookies(new Uri(_downstreamUrl + _query));
var resultDictionary = resultCookies.Cast<Cookie>().ToDictionary(cook => cook.Name, cook => cook.Value);
foreach (var expectedCookie in expected)
{
var resultCookie = resultDictionary[expectedCookie.Key];
resultCookie.ShouldBe(expectedCookie.Value);
}
}*/
}
private void GivenTheCookiesAre(IRequestCookieCollection cookies)
@ -305,7 +288,7 @@ namespace Ocelot.UnitTests.Request
private void WhenICreateARequest()
{
_result = _requestCreator.Build(_httpMethod, _downstreamUrl, _content?.ReadAsStreamAsync().Result, _headers,
_cookies, _query, _contentType, _requestId,_isQos,_qoSProvider).Result;
_query, _contentType, _requestId,_isQos,_qoSProvider).Result;
}

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@ -62,7 +62,7 @@ namespace Ocelot.UnitTests.Requester
[Fact]
public void should_call_scoped_data_repository_correctly()
{
this.Given(x => x.GivenTheRequestIs(new Ocelot.Request.Request(new HttpRequestMessage(),new CookieContainer(),true, new NoQoSProvider())))
this.Given(x => x.GivenTheRequestIs(new Ocelot.Request.Request(new HttpRequestMessage(),true, new NoQoSProvider())))
.And(x => x.GivenTheRequesterReturns(new HttpResponseMessage()))
.And(x => x.GivenTheScopedRepoReturns())
.When(x => x.WhenICallTheMiddleware())