func (identifier ResourceCacheIdentifier) FindOn(logger lager.Logger, workerClient worker.Client) (worker.Volume, bool, error) {
volumes, err := workerClient.ListVolumes(logger, identifier.initializedVolumeProperties())
if err != nil {
return nil, false, err
}
switch len(volumes) {
case 0:
return nil, false, nil
case 1:
return volumes[0], true, nil
default:
return selectLowestAlphabeticalVolume(logger, volumes), true, nil
}
}
func (identifier ResourceCacheIdentifier) CreateOn(logger lager.Logger, workerClient worker.Client) (worker.Volume, error) {
ttl := time.Duration(0)
if identifier.Version == nil {
ttl = worker.VolumeTTL
}
return workerClient.CreateVolume(
logger,
worker.VolumeSpec{
Strategy: worker.ResourceCacheStrategy{
ResourceVersion: identifier.Version,
ResourceHash: GenerateResourceHash(identifier.Source, string(identifier.Type)),
},
Properties: identifier.volumeProperties(),
Privileged: true,
TTL: ttl,
},
)
}