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Added some wrapper around the http context so i can at least pretend to access things from it without casting them

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This commit is contained in:
TomPallister
2016-10-05 20:46:00 +01:00
parent ab8407e7dc
commit 229c0878ed
9 changed files with 208 additions and 32 deletions
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8
src/Ocelot.Library/Middleware/DownstreamRouteFinderMiddleware.cs
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@@ -2,6 +2,7 @@ using System.Threading.Tasks;
using Microsoft.AspNetCore.Http;
using Ocelot.Library.Infrastructure.DownstreamRouteFinder;
using Ocelot.Library.Infrastructure.Responder;
using Ocelot.Library.Infrastructure.Services;
namespace Ocelot.Library.Middleware
{
@@ -10,14 +11,17 @@ namespace Ocelot.Library.Middleware
private readonly RequestDelegate _next;
private readonly IDownstreamRouteFinder _downstreamRouteFinder;
private readonly IHttpResponder _responder;
private readonly IRequestDataService _requestDataService;
public DownstreamRouteFinderMiddleware(RequestDelegate next,
IDownstreamRouteFinder downstreamRouteFinder,
IHttpResponder responder)
IHttpResponder responder,
IRequestDataService requestDataService)
{
_next = next;
_downstreamRouteFinder = downstreamRouteFinder;
_responder = responder;
_requestDataService = requestDataService;
}
public async Task Invoke(HttpContext context)
@@ -32,7 +36,7 @@ namespace Ocelot.Library.Middleware
return;
}
context.Items.Add("DownstreamRoute", downstreamRoute.Data);
_requestDataService.Add("DownstreamRoute", downstreamRoute.Data);
await _next.Invoke(context);
}

35
src/Ocelot.Library/Middleware/DownstreamUrlCreatorMiddleware.cs
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@@ -1,6 +1,8 @@
using System.Threading.Tasks;
using Microsoft.AspNetCore.Http;
using Ocelot.Library.Infrastructure.DownstreamRouteFinder;
using Ocelot.Library.Infrastructure.Responder;
using Ocelot.Library.Infrastructure.Services;
using Ocelot.Library.Infrastructure.UrlTemplateReplacer;
namespace Ocelot.Library.Middleware
@@ -9,34 +11,35 @@ namespace Ocelot.Library.Middleware
{
private readonly RequestDelegate _next;
private readonly IDownstreamUrlTemplateVariableReplacer _urlReplacer;
private readonly IRequestDataService _requestDataService;
private readonly IHttpResponder _responder;
public DownstreamUrlCreatorMiddleware(RequestDelegate next,
IDownstreamUrlTemplateVariableReplacer urlReplacer)
IDownstreamUrlTemplateVariableReplacer urlReplacer,
IRequestDataService requestDataService,
IHttpResponder responder)
{
_next = next;
_urlReplacer = urlReplacer;
_requestDataService = requestDataService;
_responder = responder;
}
public async Task Invoke(HttpContext context)
{
var downstreamRoute = GetDownstreamRouteFromOwinItems(context);
var downstreamRoute = _requestDataService.Get<DownstreamRoute>("DownstreamRoute");
var downstreamUrl = _urlReplacer.ReplaceTemplateVariables(downstreamRoute);
context.Items.Add("DownstreamUrl", downstreamUrl);
await _next.Invoke(context);
}
private DownstreamRoute GetDownstreamRouteFromOwinItems(HttpContext context)
{
object obj;
DownstreamRoute downstreamRoute = null;
if (context.Items.TryGetValue("DownstreamRoute", out obj))
if (downstreamRoute.IsError)
{
downstreamRoute = (DownstreamRoute) obj;
await _responder.CreateNotFoundResponse(context);
return;
}
return downstreamRoute;
var downstreamUrl = _urlReplacer.ReplaceTemplateVariables(downstreamRoute.Data);
_requestDataService.Add("DownstreamUrl", downstreamUrl);
await _next.Invoke(context);
}
}
}

27
src/Ocelot.Library/Middleware/HttpRequesterMiddleware.cs
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@@ -2,6 +2,7 @@ using System.Threading.Tasks;
using Microsoft.AspNetCore.Http;
using Ocelot.Library.Infrastructure.Requester;
using Ocelot.Library.Infrastructure.Responder;
using Ocelot.Library.Infrastructure.Services;
namespace Ocelot.Library.Middleware
{
@@ -10,38 +11,36 @@ namespace Ocelot.Library.Middleware
private readonly RequestDelegate _next;
private readonly IHttpRequester _requester;
private readonly IHttpResponder _responder;
private readonly IRequestDataService _requestDataService;
public HttpRequesterMiddleware(RequestDelegate next,
IHttpRequester requester,
IHttpResponder responder)
IHttpResponder responder,
IRequestDataService requestDataService)
{
_next = next;
_requester = requester;
_responder = responder;
_requestDataService = requestDataService;
}
public async Task Invoke(HttpContext context)
{
var downstreamUrl = GetDownstreamUrlFromOwinItems(context);
var downstreamUrl = _requestDataService.Get<string>("DownstreamUrl");
if (downstreamUrl.IsError)
{
await _responder.CreateNotFoundResponse(context);
return;
}
var response = await _requester
.GetResponse(context.Request.Method, downstreamUrl, context.Request.Body,
.GetResponse(context.Request.Method, downstreamUrl.Data, context.Request.Body,
context.Request.Headers, context.Request.Cookies, context.Request.Query, context.Request.ContentType);
await _responder.CreateResponse(context, response);
await _next.Invoke(context);
}
private string GetDownstreamUrlFromOwinItems(HttpContext context)
{
object obj;
string downstreamUrl = null;
if (context.Items.TryGetValue("DownstreamUrl", out obj))
{
downstreamUrl = (string) obj;
}
return downstreamUrl;
}
}
}