func verifyEndpoint(e endpoint.Endpoint) error {
version, err := e.Version()
if err != nil {
return err
}
log.Infof("%s reported version %s", e.Name(), version)
isSwarm := false
if strings.HasPrefix(version, "swarm/") {
isSwarm = true
parts := strings.Split(version, "/")
version = parts[1]
}
semver, err := semver.Make(version)
if err != nil {
return fmt.Errorf("can't understand version '%s'", version)
}
if isSwarm && semver.LT(RequiredSwarmAPIVersion) {
return fmt.Errorf("Swarm API must be %s or above, but it is %s", RequiredSwarmAPIVersion, semver)
}
if !isSwarm && semver.LT(RequiredDockerAPIVersion) {
return fmt.Errorf("Docker API must be %s or above, but it is %s", RequiredDockerAPIVersion, semver)
}
return nil
}
