Golang Timer.Step方法代碼示例

func (e *State) walkUnary(node *parse.UnaryNode, T miniprofiler.Timer) *Results {
	a := e.walk(node.Arg, T)
	T.Step("walkUnary: "+node.OpStr, func(T miniprofiler.Timer) {
		for _, r := range a.Results {
			if an, aok := r.Value.(Scalar); aok && math.IsNaN(float64(an)) {
				r.Value = Scalar(math.NaN())
				continue
			}
			switch rt := r.Value.(type) {
			case Scalar:
				r.Value = Scalar(uoperate(node.OpStr, float64(rt)))
			case Number:
				r.Value = Number(uoperate(node.OpStr, float64(rt)))
			case Series:
				s := make(Series)
				for k, v := range rt {
					s[k] = uoperate(node.OpStr, float64(v))
				}
				r.Value = s
			default:
				panic(ErrUnknownOp)
			}
		}
	})
	return a
}

func bandTSDB(e *State, T miniprofiler.Timer, query, duration, period string, num float64, rfunc func(*Results, *opentsdb.Response, time.Duration) error) (r *Results, err error) {
	r = new(Results)
	r.IgnoreOtherUnjoined = true
	r.IgnoreUnjoined = true
	T.Step("band", func(T miniprofiler.Timer) {
		var d, p opentsdb.Duration
		d, err = opentsdb.ParseDuration(duration)
		if err != nil {
			return
		}
		p, err = opentsdb.ParseDuration(period)
		if err != nil {
			return
		}
		if num < 1 || num > 100 {
			err = fmt.Errorf("num out of bounds")
		}
		var q *opentsdb.Query
		q, err = opentsdb.ParseQuery(query, e.tsdbContext.Version())
		if err != nil {
			return
		}
		if !e.tsdbContext.Version().FilterSupport() {
			if err = e.Search.Expand(q); err != nil {
				return
			}
		}
		req := opentsdb.Request{
			Queries: []*opentsdb.Query{q},
		}
		now := e.now
		req.End = now.Unix()
		req.Start = now.Add(time.Duration(-d)).Unix()
		if err = req.SetTime(e.now); err != nil {
			return
		}
		for i := 0; i < int(num); i++ {
			now = now.Add(time.Duration(-p))
			req.End = now.Unix()
			req.Start = now.Add(time.Duration(-d)).Unix()
			var s opentsdb.ResponseSet
			s, err = timeTSDBRequest(e, T, &req)
			if err != nil {
				return
			}
			for _, res := range s {
				if e.squelched(res.Tags) {
					continue
				}
				//offset := e.now.Sub(now.Add(time.Duration(p-d)))
				offset := e.now.Sub(now)
				if err = rfunc(r, res, offset); err != nil {
					return
				}
			}
		}
	})
	return
}

func (e *State) walkFunc(node *parse.FuncNode, T miniprofiler.Timer) *Results {
	var res *Results
	T.Step("func: "+node.Name, func(T miniprofiler.Timer) {
		var in []reflect.Value
		for i, a := range node.Args {
			var v interface{}
			switch t := a.(type) {
			case *parse.StringNode:
				v = t.Text
			case *parse.NumberNode:
				v = t.Float64
			case *parse.FuncNode:
				v = extract(e.walkFunc(t, T))
			case *parse.UnaryNode:
				v = extract(e.walkUnary(t, T))
			case *parse.BinaryNode:
				v = extract(e.walkBinary(t, T))
			case *parse.ExprNode:
				v = e.walkExpr(t, T)
			default:
				panic(fmt.Errorf("expr: unknown func arg type"))
			}
			var argType models.FuncType
			if i >= len(node.F.Args) {
				if !node.F.VArgs {
					panic("expr: shouldn't be here, more args then expected and not variable argument type func")
				}
				argType = node.F.Args[node.F.VArgsPos]
			} else {
				argType = node.F.Args[i]
			}
			if f, ok := v.(float64); ok && argType == models.TypeNumberSet {
				v = fromScalar(f)
			}
			in = append(in, reflect.ValueOf(v))
		}
		f := reflect.ValueOf(node.F.F)
		fr := f.Call(append([]reflect.Value{reflect.ValueOf(e), reflect.ValueOf(T)}, in...))
		res = fr[0].Interface().(*Results)
		if len(fr) > 1 && !fr[1].IsNil() {
			err := fr[1].Interface().(error)
			if err != nil {
				panic(err)
			}
		}
		if node.Return() == models.TypeNumberSet {
			for _, r := range res.Results {
				e.AddComputation(r, node.String(), r.Value.(Number))
			}
		}
	})
	return res
}

func (e *Expr) ExecuteState(s *State, T miniprofiler.Timer) (r *Results, queries []opentsdb.Request, err error) {
	defer errRecover(&err)
	if T == nil {
		T = new(miniprofiler.Profile)
	} else {
		s.enableComputations = true
	}
	T.Step("expr execute", func(T miniprofiler.Timer) {
		r = s.walk(e.Tree.Root, T)
	})
	queries = s.tsdbQueries
	return
}

func Index(t miniprofiler.Timer, w http.ResponseWriter, r *http.Request) {
	db, _ := sql.Open("sqlite3", ":memory:")
	db.ExecTimer(t, "create table x(a, b, c)")
	db.ExecTimer(t, "insert into x (1, 2, 4), (3, 5, 6)")
	db.QueryTimer(t, "select * from x")
	t.Step("redissss", func(t miniprofiler.Timer) {
		conn, _ := redis.Dial("tcp", ":6379")
		defer conn.Close()
		conn.DoTimer(t, "set", "tes t", "value")
		conn.SendTimer(t, "get", "test t")
	})
	fmt.Fprintf(w, `<html><body>%v</body></html>`, t.Includes())
}

func (s *Schedule) MarshalGroups(T miniprofiler.Timer, filter string) (*StateGroups, error) {
	var silenced SilenceTester
	T.Step("Silenced", func(miniprofiler.Timer) {
		silenced = s.Silenced()
	})
	var groups map[StateTuple]States
	var err error
	status := make(States)
	t := StateGroups{
		TimeAndDate: s.SystemConf.GetTimeAndDate(),
	}
	t.FailingAlerts, t.UnclosedErrors = s.getErrorCounts()
	T.Step("Setup", func(miniprofiler.Timer) {
		status2, err2 := s.GetOpenStates()
		if err2 != nil {
			err = err2
			return
		}
		var parsedExpr *boolq.Tree
		parsedExpr, err2 = boolq.Parse(filter)
		if err2 != nil {
			err = err2
			return
		}
		for k, v := range status2 {
			a := s.RuleConf.GetAlert(k.Name())
			if a == nil {
				slog.Errorf("unknown alert %s. Force closing.", k.Name())
				if err2 = s.ActionByAlertKey("bosun", "closing because alert doesn't exist.", models.ActionForceClose, k); err2 != nil {
					slog.Error(err2)
				}
				continue
			}
			is, err2 := MakeIncidentSummary(s.RuleConf, silenced, v)
			if err2 != nil {
				err = err2
				return
			}
			match := false
			match, err2 = boolq.AskParsedExpr(parsedExpr, is)
			if err2 != nil {
				err = err2
				return
			}
			if match {
				status[k] = v
			}
		}
	})
	if err != nil {
		return nil, err
	}
	T.Step("GroupStates", func(T miniprofiler.Timer) {
		groups = status.GroupStates(silenced)
	})
	T.Step("groups", func(T miniprofiler.Timer) {
		for tuple, states := range groups {
			var grouped []*StateGroup
			switch tuple.Status {
			case models.StWarning, models.StCritical, models.StUnknown:
				var sets map[string]models.AlertKeys
				T.Step(fmt.Sprintf("GroupSets (%d): %v", len(states), tuple), func(T miniprofiler.Timer) {
					sets = states.GroupSets(s.SystemConf.GetMinGroupSize())
				})
				for name, group := range sets {
					g := StateGroup{
						Active:        tuple.Active,
						Status:        tuple.Status,
						CurrentStatus: tuple.CurrentStatus,
						Silenced:      tuple.Silenced,
						Subject:       fmt.Sprintf("%s - %s", tuple.Status, name),
					}
					for _, ak := range group {
						st := status[ak]
						st.Body = ""
						st.EmailBody = nil
						st.Attachments = nil
						g.Children = append(g.Children, &StateGroup{
							Active:   tuple.Active,
							Status:   tuple.Status,
							Silenced: tuple.Silenced,
							AlertKey: ak,
							Alert:    ak.Name(),
							Subject:  string(st.Subject),
							Ago:      marshalTime(st.Last().Time),
							State:    st,
							IsError:  !s.AlertSuccessful(ak.Name()),
						})
					}
					if len(g.Children) == 1 && g.Children[0].Subject != "" {
						g.Subject = g.Children[0].Subject
					}
					grouped = append(grouped, &g)
				}
			default:
				continue
			}
			if tuple.NeedAck {
				t.Groups.NeedAck = append(t.Groups.NeedAck, grouped...)
			} else {
//.........這裏部分代碼省略.........

func Over(e *State, T miniprofiler.Timer, query, duration, period string, num float64) (r *Results, err error) {
	r = new(Results)
	r.IgnoreOtherUnjoined = true
	r.IgnoreUnjoined = true
	T.Step("band", func(T miniprofiler.Timer) {
		var d, p opentsdb.Duration
		d, err = opentsdb.ParseDuration(duration)
		if err != nil {
			return
		}
		p, err = opentsdb.ParseDuration(period)
		if err != nil {
			return
		}
		if num < 1 || num > 100 {
			err = fmt.Errorf("num out of bounds")
		}
		var q *opentsdb.Query
		q, err = opentsdb.ParseQuery(query, e.tsdbContext.Version())
		if err != nil {
			return
		}
		if !e.tsdbContext.Version().FilterSupport() {
			if err = e.Search.Expand(q); err != nil {
				return
			}
		}
		req := opentsdb.Request{
			Queries: []*opentsdb.Query{q},
		}
		now := e.now
		req.End = now.Unix()
		req.Start = now.Add(time.Duration(-d)).Unix()
		for i := 0; i < int(num); i++ {
			var s opentsdb.ResponseSet
			s, err = timeTSDBRequest(e, T, &req)
			if err != nil {
				return
			}
			offset := e.now.Sub(now)
			for _, res := range s {
				if e.squelched(res.Tags) {
					continue
				}
				values := make(Series)
				a := &Result{Group: res.Tags.Merge(opentsdb.TagSet{"shift": offset.String()})}
				for k, v := range res.DPS {
					i, err := strconv.ParseInt(k, 10, 64)
					if err != nil {
						return
					}
					values[time.Unix(i, 0).Add(offset).UTC()] = float64(v)
				}
				a.Value = values
				r.Results = append(r.Results, a)
			}
			now = now.Add(time.Duration(-p))
			req.End = now.Unix()
			req.Start = now.Add(time.Duration(-d)).Unix()
		}
	})
	return
}

func GraphiteBand(e *State, T miniprofiler.Timer, query, duration, period, format string, num float64) (r *Results, err error) {
	r = new(Results)
	r.IgnoreOtherUnjoined = true
	r.IgnoreUnjoined = true
	T.Step("graphiteBand", func(T miniprofiler.Timer) {
		var d, p opentsdb.Duration
		d, err = opentsdb.ParseDuration(duration)
		if err != nil {
			return
		}
		p, err = opentsdb.ParseDuration(period)
		if err != nil {
			return
		}
		if num < 1 || num > 100 {
			err = fmt.Errorf("expr: Band: num out of bounds")
		}
		req := &graphite.Request{
			Targets: []string{query},
		}
		now := e.now
		req.End = &now
		st := e.now.Add(-time.Duration(d))
		req.Start = &st
		for i := 0; i < int(num); i++ {
			now = now.Add(time.Duration(-p))
			req.End = &now
			st := now.Add(time.Duration(-d))
			req.Start = &st
			var s graphite.Response
			s, err = timeGraphiteRequest(e, T, req)
			if err != nil {
				return
			}
			formatTags := strings.Split(format, ".")
			var results []*Result
			results, err = parseGraphiteResponse(req, &s, formatTags)
			if err != nil {
				return
			}
			if i == 0 {
				r.Results = results
			} else {
				// different graphite requests might return series with different id's.
				// i.e. a different set of tagsets.  merge the data of corresponding tagsets
				for _, result := range results {
					updateKey := -1
					for j, existing := range r.Results {
						if result.Group.Equal(existing.Group) {
							updateKey = j
							break
						}
					}
					if updateKey == -1 {
						// result tagset is new
						r.Results = append(r.Results, result)
						updateKey = len(r.Results) - 1
					}
					for k, v := range result.Value.(Series) {
						r.Results[updateKey].Value.(Series)[k] = v
					}
				}
			}
		}
	})
	if err != nil {
		return nil, fmt.Errorf("graphiteBand: %v", err)
	}
	return
}

func Rule(t miniprofiler.Timer, w http.ResponseWriter, r *http.Request) (interface{}, error) {
	var from, to time.Time
	var err error
	if f := r.FormValue("from"); len(f) > 0 {
		from, err = time.Parse(tsdbFormatSecs, f)
		if err != nil {
			return nil, err
		}
	}
	if f := r.FormValue("to"); len(f) > 0 {
		to, err = time.Parse(tsdbFormatSecs, f)
		if err != nil {
			return nil, err
		}
	}
	intervals := 1
	if i := r.FormValue("intervals"); len(i) > 0 {
		intervals, err = strconv.Atoi(r.FormValue("intervals"))
		if err != nil {
			return nil, err
		}
		if intervals < 1 {
			return nil, fmt.Errorf("must be > 0 intervals")
		}
	}
	if fz, tz := from.IsZero(), to.IsZero(); fz && tz {
		from = time.Now()
	} else if fz && !tz {
		return nil, fmt.Errorf("cannot specify to without from")
	} else if !fz && tz && intervals > 1 {
		return nil, fmt.Errorf("cannot specify intervals without from and to")
	}

	c, a, hash, err := buildConfig(r)
	if err != nil {
		return nil, err
	}

	ch := make(chan int)
	errch := make(chan error, intervals)
	resch := make(chan *ruleResult, intervals)
	var wg sync.WaitGroup
	diff := -from.Sub(to)
	if intervals > 1 {
		diff /= time.Duration(intervals - 1)
	}
	worker := func() {
		wg.Add(1)
		for interval := range ch {
			t.Step(fmt.Sprintf("interval %v", interval), func(t miniprofiler.Timer) {
				now := from.Add(diff * time.Duration(interval))
				res, err := procRule(t, c, a, now, interval != 0, r.FormValue("email"), r.FormValue("template_group"))
				resch <- res
				errch <- err
			})
		}
		defer wg.Done()
	}
	for i := 0; i < 20; i++ {
		go worker()
	}
	for i := 0; i < intervals; i++ {
		ch <- i
	}
	close(ch)
	wg.Wait()
	close(errch)
	close(resch)
	type Result struct {
		Group  models.AlertKey
		Result *models.Event
	}
	type Set struct {
		Critical, Warning, Normal int
		Time                      string
		Results                   []*Result `json:",omitempty"`
	}
	type History struct {
		Time, EndTime time.Time
		Status        string
	}
	type Histories struct {
		History []*History
	}

	ret := struct {
		Errors       []string `json:",omitempty"`
		Warnings     []string `json:",omitempty"`
		Sets         []*Set
		AlertHistory map[models.AlertKey]*Histories
		Body         string      `json:",omitempty"`
		Subject      string      `json:",omitempty"`
		Data         interface{} `json:",omitempty"`
		Hash         string
	}{
		AlertHistory: make(map[models.AlertKey]*Histories),
		Hash:         hash,
	}
	for err := range errch {
		if err == nil {
//.........這裏部分代碼省略.........

func (e *State) walkBinary(node *parse.BinaryNode, T miniprofiler.Timer) *Results {
	ar := e.walk(node.Args[0], T)
	br := e.walk(node.Args[1], T)
	res := Results{
		IgnoreUnjoined:      ar.IgnoreUnjoined || br.IgnoreUnjoined,
		IgnoreOtherUnjoined: ar.IgnoreOtherUnjoined || br.IgnoreOtherUnjoined,
	}
	T.Step("walkBinary: "+node.OpStr, func(T miniprofiler.Timer) {
		u := e.union(ar, br, node.String())
		for _, v := range u {
			var value Value
			r := &Result{
				Group:        v.Group,
				Computations: v.Computations,
			}
			switch at := v.A.(type) {
			case Scalar:
				switch bt := v.B.(type) {
				case Scalar:
					n := Scalar(operate(node.OpStr, float64(at), float64(bt)))
					e.AddComputation(r, node.String(), Number(n))
					value = n
				case Number:
					n := Number(operate(node.OpStr, float64(at), float64(bt)))
					e.AddComputation(r, node.String(), n)
					value = n
				case Series:
					s := make(Series)
					for k, v := range bt {
						s[k] = operate(node.OpStr, float64(at), float64(v))
					}
					value = s
				default:
					panic(ErrUnknownOp)
				}
			case Number:
				switch bt := v.B.(type) {
				case Scalar:
					n := Number(operate(node.OpStr, float64(at), float64(bt)))
					e.AddComputation(r, node.String(), Number(n))
					value = n
				case Number:
					n := Number(operate(node.OpStr, float64(at), float64(bt)))
					e.AddComputation(r, node.String(), n)
					value = n
				case Series:
					s := make(Series)
					for k, v := range bt {
						s[k] = operate(node.OpStr, float64(at), float64(v))
					}
					value = s
				default:
					panic(ErrUnknownOp)
				}
			case Series:
				switch bt := v.B.(type) {
				case Number, Scalar:
					bv := reflect.ValueOf(bt).Float()
					s := make(Series)
					for k, v := range at {
						s[k] = operate(node.OpStr, float64(v), bv)
					}
					value = s
				case Series:
					s := make(Series)
					for k, av := range at {
						if bv, ok := bt[k]; ok {
							s[k] = operate(node.OpStr, av, bv)
						}
					}
					value = s
				default:
					panic(ErrUnknownOp)
				}
			default:
				panic(ErrUnknownOp)
			}
			r.Value = value
			res.Results = append(res.Results, r)
		}
	})
	return &res
}

func bandRangeTSDB(e *State, T miniprofiler.Timer, query, rangeStart, rangeEnd, period string, num float64, rfunc func(*Results, *opentsdb.Response) error) (r *Results, err error) {

	r = new(Results)
	r.IgnoreOtherUnjoined = true
	r.IgnoreUnjoined = true
	T.Step("bandRange", func(T miniprofiler.Timer) {
		var from, to, p opentsdb.Duration
		from, err = opentsdb.ParseDuration(rangeStart)
		if err != nil {
			return
		}

		to, err = opentsdb.ParseDuration(rangeEnd)
		if err != nil {
			return
		}

		p, err = opentsdb.ParseDuration(period)
		if err != nil {
			return
		}

		if num < 1 || num > 100 {
			err = fmt.Errorf("num out of bounds")
		}
		var q *opentsdb.Query
		q, err = opentsdb.ParseQuery(query, e.tsdbContext.Version())
		if err != nil {
			return
		}

		if err = e.Search.Expand(q); err != nil {
			return
		}

		req := opentsdb.Request{
			Queries: []*opentsdb.Query{q},
		}
		now := e.now

		req.End = now.Unix()
		st := now.Add(time.Duration(from)).Unix()
		req.Start = st

		if err = req.SetTime(e.now); err != nil {
			return
		}

		for i := 0; i < int(num); i++ {
			now = now.Add(time.Duration(-p))
			end := now.Add(time.Duration(-to)).Unix()
			req.End = &end
			st := now.Add(time.Duration(-from)).Unix()
			req.Start = &st

			var s opentsdb.ResponseSet
			s, err = timeTSDBRequest(e, T, &req)
			if err != nil {
				return
			}
			for _, res := range s {
				if e.squelched(res.Tags) {
					continue
				}
				if err = rfunc(r, res); err != nil {
					return
				}
			}
		}
	})
	return
}