mirror of https://github.com/kubernetes/kops.git
104 lines
3.1 KiB
Go
104 lines
3.1 KiB
Go
/*
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Copyright 2020 The Kubernetes 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 assets
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import (
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"strings"
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"k8s.io/kops"
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)
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const (
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// defaultKopsMirrorBase will be detected and automatically set to pull from the defaultKopsMirrors
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kopsDefaultBase = "https://artifacts.k8s.io/binaries/kops/%s/"
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githubKopsMirrorBase = "https://github.com/kubernetes/kops/releases/download/v%s/"
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)
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type mirrorConfig struct {
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Base string
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Mirrors []string
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}
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var wellKnownMirrors = []mirrorConfig{
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{
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Base: "https://artifacts.k8s.io/binaries/kops/{kopsVersion}/",
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Mirrors: []string{
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"https://github.com/kubernetes/kops/releases/download/v{kopsVersion}/",
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},
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},
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{
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Base: "https://storage.googleapis.com/k8s-artifacts-cni/release/",
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Mirrors: []string{
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"https://github.com/containernetworking/plugins/releases/download/",
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},
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},
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{
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Base: "https://dl.k8s.io/release/",
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Mirrors: []string{
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// We include this mirror in case dl.k8s.io is not directly reachable.
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"https://cdn.dl.k8s.io/release/",
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},
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},
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}
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func (m *mirrorConfig) findMirrors(u string) ([]string, bool) {
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baseURLString := m.Base
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baseURLString = strings.ReplaceAll(baseURLString, "{kopsVersion}", kops.Version)
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if !strings.HasSuffix(baseURLString, "/") {
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baseURLString += "/"
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}
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// Use mirrors when the URL is not a custom one
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if !strings.HasPrefix(u, baseURLString) {
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return nil, false
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}
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// Use the canonical URL as the first mirror
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mirrors := []string{u}
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for _, mirror := range m.Mirrors {
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suffix := strings.TrimPrefix(u, baseURLString)
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if strings.HasPrefix(mirror, "https://github.com") && strings.Contains(mirror, "/kops/") {
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mirror = strings.ReplaceAll(mirror, "{kopsVersion}", kops.Version)
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// GitHub artifact names are quite different, because the suffix path is collapsed.
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suffix = strings.ReplaceAll(suffix, "/", "-")
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suffix = strings.ReplaceAll(suffix, "linux-amd64-nodeup", "nodeup-linux-amd64")
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suffix = strings.ReplaceAll(suffix, "linux-arm64-nodeup", "nodeup-linux-arm64")
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suffix = strings.ReplaceAll(suffix, "linux-amd64-protokube", "protokube-linux-amd64")
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suffix = strings.ReplaceAll(suffix, "linux-arm64-protokube", "protokube-linux-arm64")
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suffix = strings.ReplaceAll(suffix, "linux-amd64-channels", "channels-linux-amd64")
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suffix = strings.ReplaceAll(suffix, "linux-arm64-channels", "channels-linux-arm64")
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}
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mirrors = append(mirrors, mirror+suffix)
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}
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return mirrors, true
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}
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// FindURLMirrors will return a list of mirrors for well-known URL locations.
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func FindURLMirrors(u string) []string {
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for _, mirror := range wellKnownMirrors {
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mirrors, found := mirror.findMirrors(u)
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if found {
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return mirrors
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}
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}
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return []string{u}
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}
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