Storage: Add support for listing resource history (#84331)

* add support for listing resource history

* make watch handle custom label selectors properly

* fix tests

* Apply suggestions from code review

Co-authored-by: Diego Augusto Molina <diegoaugustomolina@gmail.com>

* properly handle special characters in json label matcher

* tidy up

---------

Co-authored-by: Diego Augusto Molina <diegoaugustomolina@gmail.com>

pkg/services/store/entity/sqlstash/querybuilder.go

@@ -1,6 +1,7 @@
 package sqlstash
 
 import (
+	"encoding/json"
 	"strings"
 
 	"github.com/grafana/grafana/pkg/services/sqlstore/migrator"
@@ -71,6 +72,26 @@ func (q *selectQuery) addWhereIn(f string, vals []string) {
 	}
 }
 
+const sqlLikeEscape = "#"
+
+var sqlLikeEscapeReplacer = strings.NewReplacer(
+	sqlLikeEscape, sqlLikeEscape+sqlLikeEscape,
+	"%", sqlLikeEscape+"%",
+	"_", sqlLikeEscape+"_",
+)
+
+func escapeJSONStringSQLLike(s string) string {
+	b, _ := json.Marshal(s)
+	return sqlLikeEscapeReplacer.Replace(string(b))
+}
+
+func (q *selectQuery) addWhereJsonContainsKV(field string, key string, value string) {
+	escapedKey := escapeJSONStringSQLLike(key)
+	escapedValue := escapeJSONStringSQLLike(value)
+	q.where = append(q.where, q.dialect.Quote(field)+" LIKE ? ESCAPE ?")
+	q.args = append(q.args, "{%"+escapedKey+":"+escapedValue+"%}", sqlLikeEscape)
+}
+
 func (q *selectQuery) addOrderBy(field string, direction Direction) {
 	q.orderBy = append(q.orderBy, field)
 	q.direction = append(q.direction, direction)