// Print information retrieved from an htraced server via /server/info
func printServerStats(hcl *htrace.Client) int {
stats, err := hcl.GetServerStats()
if err != nil {
fmt.Println(err.Error())
return EXIT_FAILURE
}
w := new(tabwriter.Writer)
w.Init(os.Stdout, 0, 8, 0, '\t', 0)
fmt.Fprintf(w, "HTRACED SERVER STATS\n")
fmt.Fprintf(w, "Datastore Start\t%s\n",
common.UnixMsToTime(stats.LastStartMs).Format(time.RFC3339))
fmt.Fprintf(w, "Server Time\t%s\n",
common.UnixMsToTime(stats.CurMs).Format(time.RFC3339))
fmt.Fprintf(w, "Spans reaped\t%d\n", stats.ReapedSpans)
fmt.Fprintf(w, "Spans ingested\t%d\n", stats.IngestedSpans)
fmt.Fprintf(w, "Spans written\t%d\n", stats.WrittenSpans)
fmt.Fprintf(w, "Spans dropped by server\t%d\n", stats.ServerDroppedSpans)
dur := time.Millisecond * time.Duration(stats.AverageWriteSpansLatencyMs)
fmt.Fprintf(w, "Average WriteSpan Latency\t%s\n", dur.String())
dur = time.Millisecond * time.Duration(stats.MaxWriteSpansLatencyMs)
fmt.Fprintf(w, "Maximum WriteSpan Latency\t%s\n", dur.String())
fmt.Fprintf(w, "Number of leveldb directories\t%d\n", len(stats.Dirs))
w.Flush()
fmt.Println("")
for i := range stats.Dirs {
dir := stats.Dirs[i]
fmt.Printf("==== %s ===\n", dir.Path)
fmt.Printf("Approximate number of bytes: %d\n", dir.ApproximateBytes)
stats := strings.Replace(dir.LevelDbStats, "\\n", "\n", -1)
fmt.Printf("%s\n", stats)
}
w = new(tabwriter.Writer)
w.Init(os.Stdout, 0, 8, 0, '\t', 0)
fmt.Fprintf(w, "HOST SPAN METRICS\n")
mtxMap := stats.HostSpanMetrics
keys := make(sort.StringSlice, len(mtxMap))
i := 0
for k, _ := range mtxMap {
keys[i] = k
i++
}
sort.Sort(keys)
for k := range keys {
mtx := mtxMap[keys[k]]
fmt.Fprintf(w, "%s\twritten: %d\tserver dropped: %d\n",
keys[k], mtx.Written, mtx.ServerDropped)
}
w.Flush()
return EXIT_SUCCESS
}
func (rpr *Reaper) handleHeartbeat() {
// TODO: check dataStore fullness
now := common.TimeToUnixMs(time.Now().UTC())
d, updated := func() (int64, bool) {
rpr.lock.Lock()
defer rpr.lock.Unlock()
newReaperDate := now - rpr.spanExpiryMs
if newReaperDate > rpr.reaperDate {
rpr.reaperDate = newReaperDate
return rpr.reaperDate, true
} else {
return rpr.reaperDate, false
}
}()
if rpr.lg.DebugEnabled() {
if updated {
rpr.lg.Debugf("Updating UTC reaper date to %s.\n",
common.UnixMsToTime(d).Format(time.RFC3339))
} else {
rpr.lg.Debugf("Not updating previous reaperDate of %s.\n",
common.UnixMsToTime(d).Format(time.RFC3339))
}
}
}