add aggregated functions for kcmas

pkg/metric/consts.go

@@ -0,0 +1,30 @@
+/*
+Copyright 2022 The Katalyst Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package metric
+
+// aggregated functions that'd supported by katalyst now
+const (
+	AggregateIdentifier = "_agg_"
+
+	AggregateFunctionAvg = "_agg_avg"
+	AggregateFunctionSum = "_agg_sum"
+	AggregateFunctionMax = "_agg_max"
+	AggregateFunctionMin = "_agg_min"
+	AggregateFunctionP99 = "_agg_p99"
+	AggregateFunctionP90 = "_agg_p90"
+	AggregateFunctionP50 = "_agg_p50"
+)