func mergeDomains(engine storage.Engine, w origins.Writer, domains []string, since, asof time.Time) int {
var (
err error
count int
log *view.Log
)
iters := make([]origins.Iterator, len(domains))
// Merge and output facts across domains.
for i, d := range domains {
log, err = view.OpenLog(engine, d, "commit")
if err != nil {
logrus.Fatal(err)
}
iters[i] = log.View(since, asof)
}
if count, err = origins.Copy(view.Merge(iters...), w); err != nil {
logrus.Fatal(err)
}
return count
}
func concatDomains(engine storage.Engine, w origins.Writer, domains []string, since, asof time.Time) int {
var (
err error
n, count int
log *view.Log
)
// Output facts for each domain in the order they are supplied.
for _, d := range domains {
log, err = view.OpenLog(engine, d, "commit")
if err != nil {
logrus.Fatal(err)
}
v := log.View(since, asof)
n, err = origins.Copy(v, w)
if err != nil {
logrus.Fatal(err)
}
count += n
}
return count
}