// Ticker triggers the system to update itself with any new data available.
func (sys *System) Tick(ctx context.Context) {
sys.Init(ctx)
log.Debugln(ctx, "ticking txsub system")
for _, hash := range sys.Pending.Pending(ctx) {
r := sys.Results.ResultByHash(ctx, hash)
if r.Err == nil {
log.WithField(ctx, "hash", hash).Debug("finishing open submission")
sys.Pending.Finish(ctx, r)
continue
}
_, ok := r.Err.(*FailedTransactionError)
if ok {
log.WithField(ctx, "hash", hash).Debug("finishing open submission")
sys.Pending.Finish(ctx, r)
continue
}
if r.Err != ErrNoResults {
log.WithStack(ctx, r.Err).Error(r.Err)
}
}
stillOpen, err := sys.Pending.Clean(ctx, sys.SubmissionTimeout)
if err != nil {
log.WithStack(ctx, err).Error(err)
}
sys.Metrics.OpenSubmissionsGauge.Update(int64(stillOpen))
}
// UpdateMetrics triggers a refresh of several metrics gauges, such as open
// db connections and ledger state
func (a *App) UpdateLedgerState() {
var ls db.LedgerState
q := db.LedgerStateQuery{a.HistoryQuery(), a.CoreQuery()}
err := db.Get(context.Background(), q, &ls)
if err != nil {
log.WithStack(err).
WithField("err", err.Error()).
Error("failed to load ledger state")
return
}
a.latestLedgerState = ls
}
func renderErr(ctx context.Context, w http.ResponseWriter, err error) {
origErr := err
if err, ok := err.(*errors.Error); ok {
origErr = err.Err
}
p, ok := errToProblemMap[origErr]
if !ok {
p = ServerError
}
log.WithStack(ctx, err).Error(err)
render(ctx, w, p)
}
func render(ctx context.Context, w http.ResponseWriter, p P) {
Inflate(ctx, &p)
w.Header().Set("Content-Type", "application/problem+json")
js, err := json.MarshalIndent(p, "", " ")
if err != nil {
err := errors.Wrap(err, 1)
log.WithStack(ctx, err).Error(err)
http.Error(w, "error rendering problem", http.StatusInternalServerError)
return
}
w.WriteHeader(p.Status)
w.Write(js)
}
// UpdateLedgerState triggers a refresh of several metrics gauges, such as open
// db connections and ledger state
func (a *App) UpdateLedgerState() {
var err error
err = a.CoreQ().LatestLedger(&a.latestLedgerState.Core)
if err != nil {
goto Failed
}
err = a.HistoryQ().LatestLedger(&a.latestLedgerState.Horizon)
if err != nil {
goto Failed
}
return
Failed:
log.WithStack(err).
WithField("err", err.Error()).
Error("failed to load ledger state")
}
// UpdateMetrics triggers a refresh of several metrics gauges, such as open
// db connections and ledger state
func (a *App) UpdateMetrics(ctx context.Context) {
a.goroutineGauge.Update(int64(runtime.NumGoroutine()))
var ls db.LedgerState
q := db.LedgerStateQuery{a.HistoryQuery(), a.CoreQuery()}
err := db.Get(ctx, q, &ls)
if err != nil {
log.WithStack(ctx, err).
WithField("err", err.Error()).
Error("failed to load ledger state")
return
}
a.horizonLedgerGauge.Update(int64(ls.HorizonSequence))
a.stellarCoreLedgerGauge.Update(int64(ls.StellarCoreSequence))
a.horizonConnGauge.Update(int64(a.historyDb.Stats().OpenConnections))
a.stellarCoreConnGauge.Update(int64(a.coreDb.Stats().OpenConnections))
}