telegraf/internal/docker/docker.go

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package docker
import "strings"
// Adapts some of the logic from the actual Docker library's image parsing
// routines:
// https://github.com/docker/distribution/blob/release/2.7/reference/normalize.go
func ParseImage(image string) (string, string) {
domain := ""
remainder := ""
i := strings.IndexRune(image, '/')
if i == -1 || (!strings.ContainsAny(image[:i], ".:") && image[:i] != "localhost") {
remainder = image
} else {
domain, remainder = image[:i], image[i+1:]
}
imageName := ""
imageVersion := "unknown"
i = strings.LastIndex(remainder, ":")
if i > -1 {
imageVersion = remainder[i+1:]
imageName = remainder[:i]
} else {
imageName = remainder
}
if domain != "" {
imageName = domain + "/" + imageName
}
return imageName, imageVersion
}