Ejemplo n.º 1
0
// RecoverMiddleware helps the server recover from panics.  It ensures that
// no request can fully bring down the horizon server, and it also logs the
// panics to the logging subsystem.
func RecoverMiddleware(c *web.C, h http.Handler) http.Handler {
	fn := func(w http.ResponseWriter, r *http.Request) {
		ctx := gctx.FromC(*c)

		defer func() {
			if rec := recover(); rec != nil {
				err := errors.FromPanic(rec)
				errors.ReportToSentry(err, r)
				problem.Render(ctx, w, err)
			}
		}()

		h.ServeHTTP(w, r)
	}

	return http.HandlerFunc(fn)
}
Ejemplo n.º 2
0
// run causes the importer to check stellar-core to see if we can import new
// data.
func (i *System) runOnce() {

	defer func() {
		if rec := recover(); rec != nil {
			err := errors.FromPanic(rec)
			log.Errorf("import session panicked: %s", err)
			errors.ReportToSentry(err, nil)
		}
	}()

	// 1. find the latest ledger
	// 2. if any available, import until none available
	// 3. if any were imported, go to 1
	for {
		// 1.
		err := i.updateLedgerState()

		if err != nil {
			log.Errorf("could not load ledger state: %s", err)
			return
		}

		// 2.
		if i.historySequence >= i.coreSequence {
			return
		}
		is := NewSession(
			i.historySequence+1,
			i.coreSequence,
			i,
		)

		is.Run()

		if is.Err != nil {
			log.Errorf("import session failed: %s", is.Err)
			return
		}

		// 3.
		if is.Ingested == 0 {
			return
		}
	}

}