1. tag-pair support fuzzy matching search (#747)

backend/prome/query.go

@@ -597,7 +597,14 @@ func (pd *PromeDataSource) QueryTagPairs(recv vos.CommonTagQueryParam) *vos.TagP
 				if i.Name == LABEL_IDENT {
 					labelIdents = append(labelIdents, i.Value)
 				}
-				tps[fmt.Sprintf("%s=%s", i.Name, i.Value)] = struct{}{}
+				if recv.Search != "" {
+					// 如果配置了搜索字符串，则key value中任意匹配到即可
+					if strings.Contains(i.Name, recv.Search) || strings.Contains(i.Value, recv.Search) {
+						tps[fmt.Sprintf("%s=%s", i.Name, i.Value)] = struct{}{}
+					}
+				} else {
+					tps[fmt.Sprintf("%s=%s", i.Name, i.Value)] = struct{}{}
+				}
 			}
 
 		}

vos/query.go

@@ -146,6 +146,7 @@ type CommonTagQueryParam struct {
 	End            int64                  `json:"end" description:"exclusive"`
 	StartInclusive time.Time              `json:"-"`
 	EndExclusive   time.Time              `json:"-"`
+	Search         string                 `json:"search"` // 查询标签组的时候的搜索 str，可以是key 也可以是value
 	Limit          int                    `json:"limit"`
 }