func sendIndexQuery(query url.URL, backend string, indexResults chan ranking.ResultPath, done chan int, rankingopts ranking.RankingOpts) {
t0 := time.Now()
query.Scheme = "http"
query.Host = backend
query.Path = "/index"
log.Printf("asking %s\n", query.String())
resp, err := http.Get(query.String())
if err != nil {
done <- 1
return
}
defer resp.Body.Close()
body, err := ioutil.ReadAll(resp.Body)
if err != nil {
done <- 1
return
}
var files []string
if err := json.Unmarshal(body, &files); err != nil {
// TODO: Better error message
log.Printf("Invalid result from backend " + backend)
done <- 1
return
}
t1 := time.Now()
log.Printf("[%s] %d results in %v\n", backend, len(files), t1.Sub(t0))
var result ranking.ResultPath
for _, filename := range files {
result.Path = filename
result.Rank(&rankingopts)
if result.Ranking > -1 {
indexResults <- result
}
}
done <- 1
}
