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Remove System.Runtime.Loader dependency to enable net461 support. Use IApplicationLifetime instead of AssemblyLoadContext.Default.Unloading.

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This commit is contained in:
Steve Sanderson
2017-06-07 11:45:14 +01:00
parent 2aaceaa9f8
commit b444831c8d
9 changed files with 50 additions and 24 deletions
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30
src/Microsoft.AspNetCore.SpaServices/Prerendering/Prerenderer.cs
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@@ -1,4 +1,5 @@
using System;
using System.Threading;
using System.Threading.Tasks;
using Microsoft.AspNetCore.NodeServices;
@@ -9,22 +10,16 @@ namespace Microsoft.AspNetCore.SpaServices.Prerendering
/// </summary>
public static class Prerenderer
{
private static readonly Lazy<StringAsTempFile> NodeScript;
private static readonly object CreateNodeScriptLock = new object();
static Prerenderer()
{
NodeScript = new Lazy<StringAsTempFile>(() =>
{
var script = EmbeddedResourceReader.Read(typeof(Prerenderer), "/Content/Node/prerenderer.js");
return new StringAsTempFile(script); // Will be cleaned up on process exit
});
}
private static StringAsTempFile NodeScript;
/// <summary>
/// Performs server-side prerendering by invoking code in Node.js.
/// </summary>
/// <param name="applicationBasePath">The root path to your application. This is used when resolving project-relative paths.</param>
/// <param name="nodeServices">The instance of <see cref="INodeServices"/> that will be used to invoke JavaScript code.</param>
/// <param name="applicationStoppingToken">A token that indicates when the host application is stopping.</param>
/// <param name="bootModule">The path to the JavaScript file containing the prerendering logic.</param>
/// <param name="requestAbsoluteUrl">The URL of the currently-executing HTTP request. This is supplied to the prerendering code.</param>
/// <param name="requestPathAndQuery">The path and query part of the URL of the currently-executing HTTP request. This is supplied to the prerendering code.</param>
@@ -35,6 +30,7 @@ namespace Microsoft.AspNetCore.SpaServices.Prerendering
public static Task<RenderToStringResult> RenderToString(
string applicationBasePath,
INodeServices nodeServices,
CancellationToken applicationStoppingToken,
JavaScriptModuleExport bootModule,
string requestAbsoluteUrl,
string requestPathAndQuery,
@@ -43,7 +39,7 @@ namespace Microsoft.AspNetCore.SpaServices.Prerendering
string requestPathBase)
{
return nodeServices.InvokeExportAsync<RenderToStringResult>(
NodeScript.Value.FileName,
GetNodeScriptFilename(applicationStoppingToken),
"renderToString",
applicationBasePath,
bootModule,
@@ -53,5 +49,19 @@ namespace Microsoft.AspNetCore.SpaServices.Prerendering
timeoutMilliseconds,
requestPathBase);
}
private static string GetNodeScriptFilename(CancellationToken applicationStoppingToken)
{
lock(CreateNodeScriptLock)
{
if (NodeScript == null)
{
var script = EmbeddedResourceReader.Read(typeof(Prerenderer), "/Content/Node/prerenderer.js");
NodeScript = new StringAsTempFile(script, applicationStoppingToken); // Will be cleaned up on process exit
}
}
return NodeScript.FileName;
}
}
}