open-nomad/client/fingerprint/host.go

package fingerprint

import (
	"log"
	"runtime"

	cstructs "github.com/hashicorp/nomad/client/structs"
	"github.com/shirou/gopsutil/host"
)

// HostFingerprint is used to fingerprint the host
type HostFingerprint struct {
	StaticFingerprinter
	logger *log.Logger
}

// NewHostFingerprint is used to create a Host fingerprint
func NewHostFingerprint(logger *log.Logger) Fingerprint {
	f := &HostFingerprint{logger: logger}
	return f
}

func (f *HostFingerprint) Fingerprint(req *cstructs.FingerprintRequest, resp *cstructs.FingerprintResponse) error {
	hostInfo, err := host.Info()
	if err != nil {
		f.logger.Println("[WARN] Error retrieving host information: ", err)
		return err
	}

	resp.Attributes["os.name"] = hostInfo.Platform
	resp.Attributes["os.version"] = hostInfo.PlatformVersion

	resp.Attributes["kernel.name"] = runtime.GOOS
	resp.Attributes["kernel.version"] = hostInfo.KernelVersion

	resp.Attributes["unique.hostname"] = hostInfo.Hostname

	return nil
}