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routes_searcher_unix.go
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routes_searcher_unix.go
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// +build !windows
package net
import (
"strings"
bosherr "github.com/cloudfoundry/bosh-utils/errors"
boshsys "github.com/cloudfoundry/bosh-utils/system"
)
// cmdRoutesSearcher uses `route -n` command to list routes
// which routes in a same format on Ubuntu and CentOS
type cmdRoutesSearcher struct {
runner boshsys.CmdRunner
}
func NewRoutesSearcher(runner boshsys.CmdRunner) RoutesSearcher {
return cmdRoutesSearcher{runner}
}
func (s cmdRoutesSearcher) SearchRoutes() ([]Route, error) {
var routes []Route
stdout, _, _, err := s.runner.RunCommand("route", "-n")
if err != nil {
return routes, bosherr.WrapError(err, "Running route")
}
for i, routeEntry := range strings.Split(stdout, "\n") {
if i < 2 { // first two lines are informational
continue
}
if routeEntry == "" {
continue
}
routeFields := strings.Fields(routeEntry)
routes = append(routes, Route{
Destination: routeFields[0],
Gateway: routeFields[1],
InterfaceName: routeFields[7],
})
}
return routes, nil
}