Example #1
0
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
}
Example #2
0
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
}
Example #3
0
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
}
Example #4
0
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))
			default:
				panic(fmt.Errorf("expr: unknown func arg type"))
			}
			if f, ok := v.(float64); ok && node.F.Args[i] == parse.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() == parse.TypeNumberSet {
			for _, r := range res.Results {
				e.AddComputation(r, node.String(), r.Value.(Number))
			}
		}
	})
	return res
}
Example #5
0
func (s *Schedule) MarshalGroups(T miniprofiler.Timer, filter string) (*StateGroups, error) {
	var silenced map[expr.AlertKey]Silence
	T.Step("Silenced", func(miniprofiler.Timer) {
		silenced = s.Silenced()
	})
	var groups map[StateTuple]States
	var err error
	status := make(States)
	t := StateGroups{
		TimeAndDate: s.Conf.TimeAndDate,
	}
	s.Lock("MarshallGroups")
	defer s.Unlock()
	T.Step("Setup", func(miniprofiler.Timer) {

		matches, err2 := makeFilter(filter)
		if err2 != nil {
			err = err2
			return
		}
		for k, v := range s.status {
			if !v.Open {
				continue
			}
			a := s.Conf.Alerts[k.Name()]
			if a == nil {
				err = fmt.Errorf("unknown alert %s", k.Name())
				return
			}
			if matches(s.Conf, a, v) {
				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 StWarning, StCritical, StUnknown, StError:
				var sets map[string]expr.AlertKeys
				T.Step(fmt.Sprintf("GroupSets (%d): %v", len(states), tuple), func(T miniprofiler.Timer) {
					sets = states.GroupSets()
				})
				for name, group := range sets {
					g := StateGroup{
						Active:   tuple.Active,
						Status:   tuple.Status,
						Silenced: tuple.Silenced,
						Subject:  fmt.Sprintf("%s - %s", tuple.Status, name),
					}
					for _, ak := range group {
						st := s.status[ak].Copy()
						// remove some of the larger bits of state to reduce wire size
						st.Body = ""
						st.EmailBody = []byte{}
						if len(st.History) > 1 {
							st.History = st.History[len(st.History)-1:]
						}

						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,
						})
					}
					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 {
				t.Groups.Acknowledged = append(t.Groups.Acknowledged, grouped...)
			}
		}
	})
	T.Step("sort", func(T miniprofiler.Timer) {
		gsort := func(grp []*StateGroup) func(i, j int) bool {
			return func(i, j int) bool {
				a := grp[i]
				b := grp[j]
				if a.Active && !b.Active {
					return true
				} else if !a.Active && b.Active {
					return false
				}
				if a.Status != b.Status {
					return a.Status > b.Status
				}
				if a.AlertKey != b.AlertKey {
					return a.AlertKey < b.AlertKey
				}
				return a.Subject < b.Subject
			}
		}
		slice.Sort(t.Groups.NeedAck, gsort(t.Groups.NeedAck))
		slice.Sort(t.Groups.Acknowledged, gsort(t.Groups.Acknowledged))
	})
	return &t, nil
}
Example #6
0
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 {
			continue
		}
		ret.Errors = append(ret.Errors, err.Error())
	}
	for res := range resch {
		if res == nil {
			continue
		}
		set := Set{
			Critical: len(res.Criticals),
			Warning:  len(res.Warnings),
			Normal:   len(res.Normals),
			Time:     res.Time.Format(tsdbFormatSecs),
		}
		if res.Data != nil {
			ret.Body = res.Body
			ret.Subject = res.Subject
			ret.Data = res.Data
			for k, v := range res.Result {
				set.Results = append(set.Results, &Result{
					Group:  k,
					Result: v,
				})
			}
			slice.Sort(set.Results, func(i, j int) bool {
				a := set.Results[i]
				b := set.Results[j]
				if a.Result.Status != b.Result.Status {
					return a.Result.Status > b.Result.Status
				}
				return a.Group < b.Group
			})
		}
		for k, v := range res.Result {
			if ret.AlertHistory[k] == nil {
				ret.AlertHistory[k] = new(Histories)
			}
			h := ret.AlertHistory[k]
			h.History = append(h.History, &History{
				Time:   v.Time,
				Status: v.Status.String(),
			})
		}
		ret.Sets = append(ret.Sets, &set)
		ret.Warnings = append(ret.Warnings, res.Warning...)
	}
	slice.Sort(ret.Sets, func(i, j int) bool {
		return ret.Sets[i].Time < ret.Sets[j].Time
	})
	for _, histories := range ret.AlertHistory {
		hist := histories.History
		slice.Sort(hist, func(i, j int) bool {
			return hist[i].Time.Before(hist[j].Time)
		})
		for i := 1; i < len(hist); i++ {
			if i < len(hist)-1 && hist[i].Status == hist[i-1].Status {
				hist = append(hist[:i], hist[i+1:]...)
				i--
			}
		}
		for i, h := range hist[:len(hist)-1] {
			h.EndTime = hist[i+1].Time
		}
		histories.History = hist[:len(hist)-1]
	}
	return &ret, nil
}
Example #7
0
File: sched.go Project: inkel/bosun
func (s *Schedule) TimeLock(t miniprofiler.Timer) {
	t.Step("lock", func(t miniprofiler.Timer) {
		s.Lock()
	})
}
Example #8
0
File: sched.go Project: inkel/bosun
func (s *Schedule) MarshalGroups(T miniprofiler.Timer, filter string) (*StateGroups, error) {
	t := StateGroups{
		TimeAndDate: s.Conf.TimeAndDate,
		Silenced:    s.Silenced(),
	}
	s.TimeLock(T)
	defer s.Unlock()
	status := make(States)
	matches, err := makeFilter(filter)
	if err != nil {
		return nil, err
	}
	for k, v := range s.status {
		if !v.Open {
			continue
		}
		a := s.Conf.Alerts[k.Name()]
		if a == nil {
			return nil, fmt.Errorf("unknown alert %s", k.Name())
		}
		if matches(s.Conf, a, v) {
			status[k] = v
		}
	}
	var groups map[StateTuple]States
	T.Step("GroupStates", func(T miniprofiler.Timer) {
		groups = status.GroupStates()
	})
	T.Step("groups", func(T miniprofiler.Timer) {
		for tuple, states := range groups {
			var grouped []*StateGroup
			switch tuple.Status {
			case StWarning, StCritical, StUnknown, StError:
				var sets map[string]expr.AlertKeys
				T.Step(fmt.Sprintf("GroupSets (%d): %v", len(states), tuple), func(T miniprofiler.Timer) {
					sets = states.GroupSets()
				})
				for name, group := range sets {
					g := StateGroup{
						Active:  tuple.Active,
						Status:  tuple.Status,
						Subject: fmt.Sprintf("%s - %s", tuple.Status, name),
						Len:     len(group),
					}
					for _, ak := range group {
						st := s.status[ak]
						g.Children = append(g.Children, &StateGroup{
							Active:   tuple.Active,
							Status:   tuple.Status,
							AlertKey: ak,
							Alert:    ak.Name(),
							Subject:  string(st.Subject),
							Ago:      marshalTime(st.Last().Time),
						})
					}
					grouped = append(grouped, &g)
				}
			default:
				continue
			}
			if tuple.NeedAck {
				t.Groups.NeedAck = append(t.Groups.NeedAck, grouped...)
			} else {
				t.Groups.Acknowledged = append(t.Groups.Acknowledged, grouped...)
			}
		}
	})
	gsort := func(grp []*StateGroup) func(i, j int) bool {
		return func(i, j int) bool {
			a := grp[i]
			b := grp[j]
			if a.Active && !b.Active {
				return true
			} else if !a.Active && b.Active {
				return false
			}
			if a.Status != b.Status {
				return a.Status > b.Status
			}
			if a.AlertKey != b.AlertKey {
				return a.AlertKey < b.AlertKey
			}
			return a.Subject < b.Subject
		}
	}
	slice.Sort(t.Groups.NeedAck, gsort(t.Groups.NeedAck))
	slice.Sort(t.Groups.Acknowledged, gsort(t.Groups.Acknowledged))
	return &t, nil
}
Example #9
0
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.Conf.TimeAndDate,
	}
	t.FailingAlerts, t.UnclosedErrors = s.getErrorCounts()
	T.Step("Setup", func(miniprofiler.Timer) {
		matches, err2 := makeFilter(filter)
		if err2 != nil {
			err = err2
			return
		}
		status2, err2 := s.GetOpenStates()
		if err2 != nil {
			err = err2
			return
		}
		for k, v := range status2 {
			a := s.Conf.Alerts[k.Name()]
			if a == nil {
				slog.Errorf("unknown alert %s", k.Name())
				continue
			}
			if matches(s.Conf, a, v) {
				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.Conf.MinGroupSize)
				})
				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
						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 {
				t.Groups.Acknowledged = append(t.Groups.Acknowledged, grouped...)
			}
		}
	})
	T.Step("sort", func(T miniprofiler.Timer) {
		gsort := func(grp []*StateGroup) func(i, j int) bool {
			return func(i, j int) bool {
				a := grp[i]
				b := grp[j]
				if a.Active && !b.Active {
					return true
				} else if !a.Active && b.Active {
					return false
				}
				if a.Status != b.Status {
					return a.Status > b.Status
				}
				if a.AlertKey != b.AlertKey {
					return a.AlertKey < b.AlertKey
				}
				return a.Subject < b.Subject
			}
		}
		slice.Sort(t.Groups.NeedAck, gsort(t.Groups.NeedAck))
		slice.Sort(t.Groups.Acknowledged, gsort(t.Groups.Acknowledged))
	})
	return &t, nil
}
Example #10
0
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
}
Example #11
0
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
}
Example #12
0
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
				default:
					panic(ErrUnknownOp)
				}
			default:
				panic(ErrUnknownOp)
			}
			r.Value = value
			res.Results = append(res.Results, r)
		}
	})
	return &res
}
Example #13
0
func Band(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("expr: Band: num out of bounds")
		}
		q, err := opentsdb.ParseQuery(query)
		if q == nil && 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()
		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
				}
				newarr := true
				for _, a := range r.Results {
					if !a.Group.Equal(res.Tags) {
						continue
					}
					newarr = false
					values := a.Value.(Series)
					for k, v := range res.DPS {
						i, e := strconv.ParseInt(k, 10, 64)
						if e != nil {
							err = e
							return
						}
						values[time.Unix(i, 0).UTC()] = float64(v)
					}
				}
				if newarr {
					values := make(Series)
					a := &Result{Group: res.Tags}
					for k, v := range res.DPS {
						i, e := strconv.ParseInt(k, 10, 64)
						if e != nil {
							err = e
							return
						}
						values[time.Unix(i, 0).UTC()] = float64(v)
					}
					a.Value = values
					r.Results = append(r.Results, a)
				}
			}
		}
	})
	return
}