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Lazy create StaticFileMiddleware statemachine (#9507)

This commit is contained in:
Ben Adams 2019-04-18 22:44:00 +01:00 committed by Chris Ross
parent c84e37f30d
commit 507a765dfb
2 changed files with 51 additions and 46 deletions
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1
src/Middleware/StaticFiles/ref/Microsoft.AspNetCore.StaticFiles.netcoreapp3.0.cs
View File

@ -103,7 +103,6 @@ namespace Microsoft.AspNetCore.StaticFiles
public partial class StaticFileMiddleware
{
public StaticFileMiddleware(Microsoft.AspNetCore.Http.RequestDelegate next, Microsoft.AspNetCore.Hosting.IWebHostEnvironment hostingEnv, Microsoft.Extensions.Options.IOptions<Microsoft.AspNetCore.Builder.StaticFileOptions> options, Microsoft.Extensions.Logging.ILoggerFactory loggerFactory) { }
[System.Diagnostics.DebuggerStepThroughAttribute]
public System.Threading.Tasks.Task Invoke(Microsoft.AspNetCore.Http.HttpContext context) { throw null; }
}
public partial class StaticFileResponseContext

96
src/Middleware/StaticFiles/src/StaticFileMiddleware.cs
View File

@ -68,7 +68,7 @@ namespace Microsoft.AspNetCore.StaticFiles
/// </summary>
/// <param name="context"></param>
/// <returns></returns>
public async Task Invoke(HttpContext context)
public Task Invoke(HttpContext context)
{
var fileContext = new StaticFileContext(context, _options, _matchUrl, _logger, _fileProvider, _contentTypeProvider);
@ -95,52 +95,58 @@ namespace Microsoft.AspNetCore.StaticFiles
else
{
// If we get here, we can try to serve the file
fileContext.ComprehendRequestHeaders();
switch (fileContext.GetPreconditionState())
{
case StaticFileContext.PreconditionState.Unspecified:
case StaticFileContext.PreconditionState.ShouldProcess:
if (fileContext.IsHeadMethod)
{
await fileContext.SendStatusAsync(Constants.Status200Ok);
return;
}
try
{
if (fileContext.IsRangeRequest)
{
await fileContext.SendRangeAsync();
return;
}
await fileContext.SendAsync();
_logger.FileServed(fileContext.SubPath, fileContext.PhysicalPath);
return;
}
catch (FileNotFoundException)
{
context.Response.Clear();
}
break;
case StaticFileContext.PreconditionState.NotModified:
_logger.FileNotModified(fileContext.SubPath);
await fileContext.SendStatusAsync(Constants.Status304NotModified);
return;
case StaticFileContext.PreconditionState.PreconditionFailed:
_logger.PreconditionFailed(fileContext.SubPath);
await fileContext.SendStatusAsync(Constants.Status412PreconditionFailed);
return;
default:
var exception = new NotImplementedException(fileContext.GetPreconditionState().ToString());
Debug.Fail(exception.ToString());
throw exception;
}
return ServeStaticFile(context, fileContext);
}
await _next(context);
return _next(context);
}
private async Task ServeStaticFile(HttpContext context, StaticFileContext fileContext)
{
fileContext.ComprehendRequestHeaders();
switch (fileContext.GetPreconditionState())
{
case StaticFileContext.PreconditionState.Unspecified:
case StaticFileContext.PreconditionState.ShouldProcess:
if (fileContext.IsHeadMethod)
{
await fileContext.SendStatusAsync(Constants.Status200Ok);
return;
}
try
{
if (fileContext.IsRangeRequest)
{
await fileContext.SendRangeAsync();
return;
}
await fileContext.SendAsync();
_logger.FileServed(fileContext.SubPath, fileContext.PhysicalPath);
return;
}
catch (FileNotFoundException)
{
context.Response.Clear();
}
await _next(context);
return;
case StaticFileContext.PreconditionState.NotModified:
_logger.FileNotModified(fileContext.SubPath);
await fileContext.SendStatusAsync(Constants.Status304NotModified);
return;
case StaticFileContext.PreconditionState.PreconditionFailed:
_logger.PreconditionFailed(fileContext.SubPath);
await fileContext.SendStatusAsync(Constants.Status412PreconditionFailed);
return;
default:
var exception = new NotImplementedException(fileContext.GetPreconditionState().ToString());
Debug.Fail(exception.ToString());
throw exception;
}
}
}
}