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prevent the same path load multiple times

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Kubernetes-commit: 973e610787db8a9cee5da098e2f72672be817aa9
This commit is contained in:
wackxu
2017-10-12 10:19:28 +08:00
committed by Kubernetes Publisher
parent fff8c3d73e
commit 1ae3aba19b
3 changed files with 47 additions and 2 deletions
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18
tools/clientcmd/loader.go
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@@ -139,7 +139,9 @@ func NewDefaultClientConfigLoadingRules() *ClientConfigLoadingRules {
envVarFiles := os.Getenv(RecommendedConfigPathEnvVar)
if len(envVarFiles) != 0 {
chain = append(chain, filepath.SplitList(envVarFiles)...)
fileList := filepath.SplitList(envVarFiles)
// prevent the same path load multiple times
chain = append(chain, deduplicate(fileList)...)
} else {
chain = append(chain, RecommendedHomeFile)
@@ -615,3 +617,17 @@ func MakeRelative(path, base string) (string, error) {
}
return path, nil
}
// deduplicate removes any duplicated values and returns a new slice, keeping the order unchanged
func deduplicate(s []string) []string {
encountered := map[string]bool{}
ret := make([]string, 0)
for i := range s {
if encountered[s[i]] {
continue
}
encountered[s[i]] = true
ret = append(ret, s[i])
}
return ret
}