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scsi_device_path_resolver.go
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scsi_device_path_resolver.go
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package devicepathresolver
import (
boshsettings "github.com/cloudfoundry/bosh-agent/settings"
bosherr "github.com/cloudfoundry/bosh-utils/errors"
)
type scsiDevicePathResolver struct {
scsiVolumeIDPathResolver DevicePathResolver
scsiIDPathResolver DevicePathResolver
scsiLunPathResolver DevicePathResolver
}
func NewScsiDevicePathResolver(
scsiVolumeIDPathResolver DevicePathResolver,
scsiIDPathResolver DevicePathResolver,
scsiLunPathResolver DevicePathResolver,
) DevicePathResolver {
return scsiDevicePathResolver{
scsiVolumeIDPathResolver: scsiVolumeIDPathResolver,
scsiIDPathResolver: scsiIDPathResolver,
scsiLunPathResolver: scsiLunPathResolver,
}
}
func (sr scsiDevicePathResolver) GetRealDevicePath(diskSettings boshsettings.DiskSettings) (string, bool, error) {
if len(diskSettings.DeviceID) > 0 {
return sr.scsiIDPathResolver.GetRealDevicePath(diskSettings)
}
if len(diskSettings.VolumeID) > 0 {
return sr.scsiVolumeIDPathResolver.GetRealDevicePath(diskSettings)
}
if len(diskSettings.Lun) > 0 && len(diskSettings.HostDeviceID) > 0 {
return sr.scsiLunPathResolver.GetRealDevicePath(diskSettings)
}
return "", false, bosherr.Error("Neither ID, VolumeID nor (Lun, HostDeviceID) provided in disk settings")
}