public FeatureTagHelper(IFeatureService featuresService, EsquioAspNetCoreDiagnostics diagnostics)
{
_featuresService = featuresService ?? throw new ArgumentNullException(nameof(featuresService));
_diagnostics = diagnostics ?? throw new ArgumentNullException(nameof(diagnostics));
}
public async Task Invoke(HttpContext context, IFeatureService featureService, EsquioAspNetCoreDiagnostics diagnostics)
{
var evaluationsResponse = new List <EvaluationResponse>();
var names = context.Request
.Query[FEATURENAME_QUERY_PARAMETER_NAME];
foreach (var featureName in names)
{
try
{
diagnostics.EsquioMiddlewareEvaluatingFeature(featureName);
var isEnabled = await featureService
.IsEnabledAsync(featureName, context?.RequestAborted ?? CancellationToken.None);
evaluationsResponse.Add(new EvaluationResponse()
{
Name = featureName,
Enabled = isEnabled
});
}
catch (Exception exception)
{
diagnostics.EsquioMiddlewareThrow(featureName, exception);
await WriteError(context, featureName);
return;
}
}
diagnostics.EsquioMiddlewareSuccess();
await WriteResponse(context, evaluationsResponse);
}
public FeatureMatcherPolicy(EsquioAspNetCoreDiagnostics diagnostics)
{
_diagnostics = diagnostics ?? throw new ArgumentNullException(nameof(diagnostics));
}
