private static IQueryable<Package> FormatResults(SearchFilter searchFilter, SearchResults result)
{
// For count queries, we can ask the SearchService to not filter the source results. This would avoid hitting the database and consequently make it very fast.
if (searchFilter.CountOnly)
{
// At this point, we already know what the total count is. We can have it return this value very quickly without doing any SQL.
return result.Data.InterceptWith(new CountInterceptor(result.Hits));
}
// For relevance search, Lucene returns us a paged/sorted list. OData tries to apply default ordering and Take / Skip on top of this.
// It also tries to filter to latest versions, but the search service already did that!
// We avoid it by yanking these expressions out of out the tree.
return result.Data
.InterceptWith(new CountInterceptor(result.Hits))
.InterceptWith(new DisregardODataInterceptor());
}
private async Task<SearchResults> SearchCore(SearchFilter filter, bool raw)
{
// Query!
var sw = new Stopwatch();
sw.Start();
var result = await _client.Search(
filter.SearchTerm,
projectTypeFilter: null,
includePrerelease: filter.IncludePrerelease,
curatedFeed: filter.CuratedFeed == null ? null : filter.CuratedFeed.Name,
sortBy: filter.SortOrder,
skip: filter.Skip,
take: filter.Take,
isLuceneQuery: raw,
countOnly: filter.CountOnly,
explain: false,
getAllVersions: filter.IncludeAllVersions,
supportedFramework: filter.SupportedFramework);
sw.Stop();
SearchResults results = null;
if (result.IsSuccessStatusCode)
{
var content = await result.ReadContent();
if (filter.CountOnly || content.TotalHits == 0)
{
results = new SearchResults(content.TotalHits, content.IndexTimestamp);
}
else
{
results = new SearchResults(
content.TotalHits,
content.IndexTimestamp,
content.Data.Select(ReadPackage).AsQueryable());
}
}
Trace.PerfEvent(
SearchRoundtripTimePerfCounter,
sw.Elapsed,
new Dictionary<string, object>() {
{"Term", filter.SearchTerm},
{"Context", filter.Context},
{"Raw", raw},
{"Hits", results == null ? -1 : results.Hits},
{"StatusCode", (int)result.StatusCode},
{"SortOrder", filter.SortOrder.ToString()},
{"CuratedFeed", filter.CuratedFeed == null ? null : filter.CuratedFeed.Name},
{"Url", TryGetUrl()}
});
result.HttpResponse.EnsureSuccessStatusCode();
return results;
}
