40 lines
1.3 KiB
Go
40 lines
1.3 KiB
Go
// Copyright 2024 The Prometheus Authors
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//go:build !go1.21
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package model
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import (
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"fmt"
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"sort"
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"strings"
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)
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// String was optimized using functions not available for go 1.20
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// or lower. We keep the old implementation for compatibility with client_golang.
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// Once client golang drops support for go 1.20 (scheduled for August 2024), this
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// file can be removed.
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func (l LabelSet) String() string {
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labelNames := make([]string, 0, len(l))
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for name := range l {
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labelNames = append(labelNames, string(name))
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}
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sort.Strings(labelNames)
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lstrs := make([]string, 0, len(l))
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for _, name := range labelNames {
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lstrs = append(lstrs, fmt.Sprintf("%s=%q", name, l[LabelName(name)]))
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}
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return fmt.Sprintf("{%s}", strings.Join(lstrs, ", "))
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}
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