private async Task <V2SearchResponse> UseHijackIndexAsync(V2SearchRequest request)
{
var operation = _operationBuilder.V2SearchWithHijackIndex(request);
V2SearchResponse output;
switch (operation.Type)
{
case IndexOperationType.Get:
var documentResult = await Measure.DurationWithValueAsync(
() => _hijackIndex.Documents.GetOrNullAsync <HijackDocument.Full>(operation.DocumentKey));
// If the request is excluding SemVer 2.0.0 packages and the document is SemVer 2.0.0, filter it
// out. The must be done after fetching the document because some SemVer 2.0.0 packages are
// SemVer 2.0.0 because of a dependency version or because of build metadata (e.g. 1.0.0+metadata).
// Neither of these reasons is apparent from the request. Build metadata is not used for comparison
// so if someone searchs for "version:1.0.0+foo" and the actual package version is "1.0.0" or
// "1.0.0+bar" the document will still be returned.
//
// A request looking for a specific package version that is SemVer 2.0.0 due to dots in the
// prerelease label (e.g. 1.0.0-beta.1) could no-op if the request is not including SemVer 2.0.0
// but that's not worth the effort since we can catch that case after fetching the document anyway.
// It's more consistent with the search operation path to make the SemVer 2.0.0 filtering decision
// solely based on the document data.
//
// Note that the prerelease filter is ignored here by design. This is legacy behavior from the
// previous search implementation.
var document = documentResult.Value;
if (document != null &&
!request.IncludeSemVer2 &&
document.SemVerLevel == SemVerLevelKey.SemVer2)
{
document = null;
}
output = _responseBuilder.V2FromHijackDocument(
request,
operation.DocumentKey,
document,
documentResult.Duration);
_telemetryService.TrackV2GetDocumentWithHijackIndex(documentResult.Duration);
break;
case IndexOperationType.Search:
var result = await Measure.DurationWithValueAsync(() => _hijackIndex.Documents.SearchAsync <HijackDocument.Full>(
operation.SearchText,
operation.SearchParameters));
output = _responseBuilder.V2FromHijack(
request,
operation.SearchText,
operation.SearchParameters,
result.Value,
result.Duration);
_telemetryService.TrackV2SearchQueryWithHijackIndex(result.Duration);
break;
case IndexOperationType.Empty:
output = _responseBuilder.EmptyV2(request);
break;
default:
throw UnsupportedOperation(operation);
}
return(output);
}