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// Copyright 2020 The Prometheus 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 testutil
import (
//nolint:staticcheck // Ignore SA1019. Dependencies use the deprecated package, so we have to, too.
"github.com/golang/protobuf/proto"
dto "github.com/prometheus/client_model/go"
)
// MetricFamiliesMap creates the map needed in the MetricFamilies field of a
// WriteRequest from the provided reference metric families. While doing so, it
// creates deep copies of the metric families so that modifications that might
// happen during processing of the WriteRequest will not affect the reference
// metric families.
func MetricFamiliesMap(mfs ...*dto.MetricFamily) map[string]*dto.MetricFamily {
m := map[string]*dto.MetricFamily{}
for _, mf := range mfs {
buf, err := proto.Marshal(mf)
if err != nil {
panic(err)
}
mfCopy := &dto.MetricFamily{}
if err := proto.Unmarshal(buf, mfCopy); err != nil {
panic(err)
}
m[mf.GetName()] = mfCopy
}
return m
}
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