Example #1
0
func streamQueryzHandler(queryList *QueryList, w http.ResponseWriter, r *http.Request) {
	if err := acl.CheckAccessHTTP(r, acl.DEBUGGING); err != nil {
		acl.SendError(w, err)
		return
	}
	rows := queryList.GetQueryzRows()
	if err := r.ParseForm(); err != nil {
		http.Error(w, fmt.Sprintf("cannot parse form: %s", err), http.StatusInternalServerError)
		return
	}
	format := r.FormValue("format")
	if format == "json" {
		js, err := json.Marshal(rows)
		if err != nil {
			http.Error(w, err.Error(), http.StatusInternalServerError)
			return
		}
		w.Header().Set("Content-Type", "application/json")
		w.Write(js)
		return
	}
	logz.StartHTMLTable(w)
	defer logz.EndHTMLTable(w)
	w.Write(streamqueryzHeader)
	for i := range rows {
		if err := streamqueryzTmpl.Execute(w, rows[i]); err != nil {
			log.Errorf("streamlogz: couldn't execute template: %v", err)
		}
	}
}
Example #2
0
func schemazHandler(tables []*schema.Table, w http.ResponseWriter, r *http.Request) {
	if err := acl.CheckAccessHTTP(r, acl.DEBUGGING); err != nil {
		acl.SendError(w, err)
		return
	}
	logz.StartHTMLTable(w)
	defer logz.EndHTMLTable(w)
	w.Write(schemazHeader)

	sorter := schemazSorter{
		rows: tables,
		less: func(row1, row2 *schema.Table) bool {
			return row1.Name > row2.Name
		},
	}
	sort.Sort(&sorter)
	envelope := struct {
		Type  []string
		Table *schema.Table
	}{
		Type: schema.TypeNames,
	}
	for _, Value := range sorter.rows {
		envelope.Table = Value
		if err := schemazTmpl.Execute(w, envelope); err != nil {
			log.Errorf("schemaz: couldn't execute template: %v", err)
		}
	}
}
Example #3
0
func showThrottlerLog(w http.ResponseWriter, m *managerImpl, name string) {
	results, err := m.Log(name)
	if err != nil {
		http.Error(w, err.Error(), http.StatusInternalServerError)
		return
	}

	logz.StartHTMLTable(w)

	if _, err := io.WriteString(w, logHeaderHTML); err != nil {
		panic(fmt.Sprintf("failed to execute logHeader template: %v", err))
	}
	for _, r := range results {
		// Color based on max(tested state, new state).
		state := r.TestedState
		if stateGreater(r.NewState, state) {
			state = r.NewState
		}
		var colorLevel string
		switch state {
		case stateIncreaseRate:
			colorLevel = "low"
		case stateDecreaseAndGuessRate:
			colorLevel = "medium"
		case stateEmergency:
			colorLevel = "high"
		}
		data := struct {
			result
			ColorLevel string
		}{r, colorLevel}

		if err := logEntryTemplate.Execute(w, data); err != nil {
			panic(fmt.Sprintf("failed to execute logEntry template: %v", err))
		}
	}

	logz.EndHTMLTable(w)

	// Print footer.
	count := len(results)
	var d time.Duration
	if count > 0 {
		d = results[0].Now.Sub(results[count-1].Now)
	}
	if err := logFooterTemplate.Execute(w, map[string]interface{}{
		"Count":    count,
		"TimeSpan": fmt.Sprintf("%.1f", d.Minutes()),
	}); err != nil {
		panic(fmt.Sprintf("failed to execute logFooter template: %v", err))
	}
}
Example #4
0
// querylogzHandler serves a human readable snapshot of the
// current query log.
func querylogzHandler(ch chan interface{}, w http.ResponseWriter, r *http.Request) {
	if err := acl.CheckAccessHTTP(r, acl.DEBUGGING); err != nil {
		acl.SendError(w, err)
		return
	}
	timeout, limit := parseTimeoutLimitParams(r)
	logz.StartHTMLTable(w)
	defer logz.EndHTMLTable(w)
	w.Write(querylogzHeader)

	tmr := time.NewTimer(timeout)
	defer tmr.Stop()
	for i := 0; i < limit; i++ {
		select {
		case out := <-ch:
			select {
			case <-tmr.C:
				return
			default:
			}
			stats, ok := out.(*LogStats)
			if !ok {
				err := fmt.Errorf("Unexpected value in %s: %#v (expecting value of type %T)", TxLogger.Name(), out, &LogStats{})
				io.WriteString(w, `<tr class="error">`)
				io.WriteString(w, err.Error())
				io.WriteString(w, "</tr>")
				log.Error(err)
				continue
			}
			var level string
			if stats.TotalTime().Seconds() < 0.01 {
				level = "low"
			} else if stats.TotalTime().Seconds() < 0.1 {
				level = "medium"
			} else {
				level = "high"
			}
			tmplData := struct {
				*LogStats
				ColorLevel string
			}{stats, level}
			if err := querylogzTmpl.Execute(w, tmplData); err != nil {
				log.Errorf("querylogz: couldn't execute template: %v", err)
			}
		case <-tmr.C:
			return
		}
	}
}
Example #5
0
// txlogzHandler serves a human readable snapshot of the
// current transaction log.
// Endpoint: /txlogz?timeout=%d&limit=%d
// timeout: the txlogz will keep dumping transactions until timeout
// limit: txlogz will keep dumping transcations until it hits the limit
func txlogzHandler(w http.ResponseWriter, req *http.Request) {
	if err := acl.CheckAccessHTTP(req, acl.DEBUGGING); err != nil {
		acl.SendError(w, err)
		return
	}

	timeout, limit := parseTimeoutLimitParams(req)
	ch := TxLogger.Subscribe("txlogz")
	defer TxLogger.Unsubscribe(ch)
	logz.StartHTMLTable(w)
	defer logz.EndHTMLTable(w)
	w.Write(txlogzHeader)

	tmr := time.NewTimer(timeout)
	defer tmr.Stop()
	for i := 0; i < limit; i++ {
		select {
		case out := <-ch:
			txc, ok := out.(*TxConnection)
			if !ok {
				err := fmt.Errorf("Unexpected value in %s: %#v (expecting value of type %T)", TxLogger.Name(), out, &TxConnection{})
				io.WriteString(w, `<tr class="error">`)
				io.WriteString(w, err.Error())
				io.WriteString(w, "</tr>")
				log.Error(err)
				continue
			}
			duration := txc.EndTime.Sub(txc.StartTime).Seconds()
			var level string
			if duration < 0.1 {
				level = "low"
			} else if duration < 1.0 {
				level = "medium"
			} else {
				level = "high"
			}
			tmplData := struct {
				*TxConnection
				Duration   float64
				ColorLevel string
			}{txc, duration, level}
			if err := txlogzTmpl.Execute(w, tmplData); err != nil {
				log.Errorf("txlogz: couldn't execute template: %v", err)
			}
		case <-tmr.C:
			return
		}
	}
}
Example #6
0
func queryzHandler(si *SchemaInfo, w http.ResponseWriter, r *http.Request) {
	if err := acl.CheckAccessHTTP(r, acl.DEBUGGING); err != nil {
		acl.SendError(w, err)
		return
	}
	logz.StartHTMLTable(w)
	defer logz.EndHTMLTable(w)
	w.Write(queryzHeader)

	keys := si.queries.Keys()
	sorter := queryzSorter{
		rows: make([]*queryzRow, 0, len(keys)),
		less: func(row1, row2 *queryzRow) bool {
			return row1.timePQ() > row2.timePQ()
		},
	}
	for _, v := range si.queries.Keys() {
		plan := si.peekQuery(v)
		if plan == nil {
			continue
		}
		Value := &queryzRow{
			Query:  logz.Wrappable(v),
			Table:  plan.TableName,
			Plan:   plan.PlanID,
			Reason: plan.Reason,
		}
		Value.Count, Value.tm, Value.mysqlTime, Value.Rows, Value.Errors = plan.Stats()
		var timepq time.Duration
		if Value.Count != 0 {
			timepq = time.Duration(int64(Value.tm) / Value.Count)
		}
		if timepq < 10*time.Millisecond {
			Value.Color = "low"
		} else if timepq < 100*time.Millisecond {
			Value.Color = "medium"
		} else {
			Value.Color = "high"
		}
		sorter.rows = append(sorter.rows, Value)
	}
	sort.Sort(&sorter)
	for _, Value := range sorter.rows {
		if err := queryzTmpl.Execute(w, Value); err != nil {
			log.Errorf("queryz: couldn't execute template: %v", err)
		}
	}
}