public async Task When_context_has_started_response_should_contain_header()
{
var expectedHeader = new KeyValuePair <string, StringValues>(
CorrelationHttpHeaders.CorrelationId,
new StringValues(_correlationContext.CorrelationId)
);
// Act
_sut.Start(_correlationContext);
await _responseFeature.FireOnSendingHeadersAsync();
// Assert
_httpContext.Response.Headers.Should().Contain(expectedHeader);
}
/// <summary>
/// Invokes the middleware for the current <paramref name="httpContext"/>.
/// </summary>
/// <param name="httpContext">The current <see cref="HttpContext"/>.</param>
/// <returns>An awaitable to wait for to complete the request.</returns>
public Task Invoke(HttpContext httpContext)
{
KeyValuePair <string, string> requestHeader = httpContext.Request.Headers.GetCorrelationIdHeader(_acceptedRequestHeaders);
if (requestHeader.Value != null)
{
_logger.LogTrace("Request header '{HeaderName}' found with correlation id '{CorrelationId}'.", requestHeader.Key, requestHeader.Value);
}
string responseHeaderName = _options.IncludeInResponse ? requestHeader.Key : null;
var correlatedHttpRequest = new HttpRequestActivity(_logger, httpContext, responseHeaderName);
return(_asyncCorrelationManager.CorrelateAsync(
requestHeader.Value,
() =>
{
correlatedHttpRequest.Start(_correlationContextAccessor.CorrelationContext);
return _next(httpContext)
.ContinueWith(t =>
{
correlatedHttpRequest.Stop();
return t;
})
.Unwrap();
}));
}
/// <summary>
/// Invokes the middleware for the current <paramref name="httpContext"/>.
/// </summary>
/// <param name="httpContext">The current <see cref="HttpContext"/>.</param>
/// <returns>An awaitable to wait for to complete the request.</returns>
public Task Invoke(HttpContext httpContext)
{
if (httpContext is null)
{
throw new ArgumentNullException(nameof(httpContext));
}
// ReSharper disable once UseDeconstruction - not supported in .NET46/.NETS
KeyValuePair <string, string?> requestHeader = httpContext.Request.Headers.GetCorrelationIdHeader(_acceptedRequestHeaders);
if (requestHeader.Value != null)
{
_logger.LogTrace("Request header '{HeaderName}' found with correlation id '{CorrelationId}'.", requestHeader.Key, requestHeader.Value);
}
string?responseHeaderName = _options.IncludeInResponse ? requestHeader.Key : null;
var correlatedHttpRequest = new HttpRequestActivity(_logger, httpContext, responseHeaderName);
return(_asyncCorrelationManager.CorrelateAsync(
requestHeader.Value,
() =>
{
correlatedHttpRequest.Start(_correlationContextAccessor.CorrelationContext);
return _next(httpContext)
.ContinueWith(t =>
{
correlatedHttpRequest.Stop();
return t;
}, TaskScheduler.Current)
.Unwrap();
}));
}
public async Task When_no_header_name_is_provided_and_context_has_started_response_should_not_contain_header()
{
var sut = new HttpRequestActivity(_logger, _httpContext, null);
// Act
sut.Start(_correlationContext);
await _responseFeature.FireOnSendingHeadersAsync();
// Assert
_httpContext.Response.Headers.Should().BeEmpty();
}