func doSetGCPolicy(ctx context.Context, args ...string) {
if len(args) < 3 {
log.Fatalf("usage: cbt setgcpolicy <table> <family> ( maxage=<d> | maxversions=<n> )")
}
table := args[0]
fam := args[1]
var pol bigtable.GCPolicy
switch p := args[2]; {
case strings.HasPrefix(p, "maxage="):
d, err := parseDuration(p[7:])
if err != nil {
log.Fatal(err)
}
pol = bigtable.MaxAgePolicy(d)
case strings.HasPrefix(p, "maxversions="):
n, err := strconv.ParseUint(p[12:], 10, 16)
if err != nil {
log.Fatal(err)
}
pol = bigtable.MaxVersionsPolicy(int(n))
default:
log.Fatalf("Bad GC policy %q", p)
}
if err := getAdminClient().SetGCPolicy(ctx, table, fam, pol); err != nil {
log.Fatalf("Setting GC policy: %v", err)
}
}
// handleReset deletes the table if it exists, creates it again, and creates its column families.
func handleReset(w http.ResponseWriter, r *http.Request, table string, adminClient *bigtable.AdminClient) {
if r.Method != "POST" {
http.Error(w, "POST requests only", http.StatusMethodNotAllowed)
return
}
ctx, _ := context.WithTimeout(context.Background(), 5*time.Minute)
adminClient.DeleteTable(ctx, table)
if err := adminClient.CreateTable(ctx, table); err != nil {
http.Error(w, "Error creating Bigtable: "+err.Error(), http.StatusInternalServerError)
return
}
time.Sleep(20 * time.Second)
// Create two column families, and set the GC policy for each one to keep one version.
for _, family := range []string{indexColumnFamily, contentColumnFamily} {
if err := adminClient.CreateColumnFamily(ctx, table, family); err != nil {
http.Error(w, "Error creating column family: "+err.Error(), http.StatusInternalServerError)
return
}
if err := adminClient.SetGCPolicy(ctx, table, family, bigtable.MaxVersionsPolicy(1)); err != nil {
http.Error(w, "Error setting GC policy: "+err.Error(), http.StatusInternalServerError)
return
}
}
w.Write([]byte("<html><body>Done.</body></html>"))
return
}