Unified Storage: Remove wildcard queries (#101441)

* WIP adding custom analyzer so we can do substring search efficiently

* Adding unit tests for title search

* formatting

* adds more title search unit tests

* organize helpers

* fixes issue caused by having two title mappings

* Removes camelcase token filter since it prevents you from searching for a substring of chars and numbers. Adds regression test.

* adds back mapping for title_phrase

* use simple analyzer for input query string so it doesn't filter out english stop words

* ran bleve tests, table snapshots updated

* ignore linter for "unused" test functions. They are very helpful for troubleshooting search. Keeping them.

* only log total hits and query cost if result not nil

* fixes failing test - one more field because there are two title mappings now

* fix test

* fixes test - only take first item when its the title

* Adds separate internal field for title ngram mapping.

When searching with a query, results are sorted by score desc.

When searching without a query, results are sorted by title desc.

Adjusts ngram max to be 10.

Text queries are a disjunction of an exact match, phrase match, and a match. Boosted to have priority in that order.

Adds more unit tests for searching.

* linter

* fix test

* ran tests - generated new test dash json

* sort by title phrase instead of title

* fix test - not relying on /apis/dashboard/search to apply title sorting anymore

pkg/storage/unified/resource/document.go

@@ -62,6 +62,9 @@ type IndexableDocument struct {
 	// The generic display name
 	Title string `json:"title,omitempty"`
 
+	// internal field for searching title with ngrams
+	TitleNgram string `json:"title_ngram,omitempty"`
+
 	// internal sort field for title ( don't set this directly )
 	TitlePhrase string `json:"title_phrase,omitempty"`
 
@@ -169,7 +172,8 @@ func NewIndexableDocument(key *ResourceKey, rv int64, obj utils.GrafanaMetaAcces
 		Key:         key,
 		RV:          rv,
 		Name:        key.Name,
-		Title:       title,                  // We always want *something* to display
+		Title:       title, // We always want *something* to display
+		TitleNgram:  title,
 		TitlePhrase: strings.ToLower(title), // Lowercase for case-insensitive sorting
 		Labels:      obj.GetLabels(),
 		Folder:      obj.GetFolder(),
@@ -264,6 +268,7 @@ const SEARCH_FIELD_NAMESPACE = "namespace"
 const SEARCH_FIELD_NAME = "name"
 const SEARCH_FIELD_RV = "rv"
 const SEARCH_FIELD_TITLE = "title"
+const SEARCH_FIELD_TITLE_NGRAM = "title_ngram"
 const SEARCH_FIELD_TITLE_PHRASE = "title_phrase" // filtering/sorting on title by full phrase
 const SEARCH_FIELD_DESCRIPTION = "description"
 const SEARCH_FIELD_TAGS = "tags"