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https://github.com/grafana/loki.git
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d54e0871d4
This PR updates the Prometheus dependency in Loki and Promtail. The PR is required so that we can also update Grafana Agent to the latest Prometheus. Unfortunately, Promtail and Loki share the same go.mod file.
76 lines
2.0 KiB
Go
76 lines
2.0 KiB
Go
/*
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Copyright The containerd 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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http://www.apache.org/licenses/LICENSE-2.0
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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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*/
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package reference
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import (
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"sort"
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)
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// Sort sorts string references preferring higher information references.
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//
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// The precedence is as follows:
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//
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// 1. [Named] + [Tagged] + [Digested] (e.g., "docker.io/library/busybox:latest@sha256:<digest>")
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// 2. [Named] + [Tagged] (e.g., "docker.io/library/busybox:latest")
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// 3. [Named] + [Digested] (e.g., "docker.io/library/busybo@sha256:<digest>")
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// 4. [Named] (e.g., "docker.io/library/busybox")
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// 5. [Digested] (e.g., "docker.io@sha256:<digest>")
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// 6. Parse error
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func Sort(references []string) []string {
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var prefs []Reference
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var bad []string
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for _, ref := range references {
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pref, err := ParseAnyReference(ref)
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if err != nil {
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bad = append(bad, ref)
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} else {
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prefs = append(prefs, pref)
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}
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}
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sort.Slice(prefs, func(a, b int) bool {
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ar := refRank(prefs[a])
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br := refRank(prefs[b])
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if ar == br {
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return prefs[a].String() < prefs[b].String()
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}
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return ar < br
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})
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sort.Strings(bad)
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var refs []string
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for _, pref := range prefs {
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refs = append(refs, pref.String())
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}
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return append(refs, bad...)
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}
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func refRank(ref Reference) uint8 {
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if _, ok := ref.(Named); ok {
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if _, ok = ref.(Tagged); ok {
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if _, ok = ref.(Digested); ok {
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return 1
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}
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return 2
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}
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if _, ok = ref.(Digested); ok {
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return 3
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}
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return 4
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}
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return 5
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}
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