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format.go
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format.go
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// Copyright (c) 2021 Terminus, Inc.
//
// This program is free software: you can use, redistribute, and/or modify
// it under the terms of the GNU Affero General Public License, version 3
// or later ("AGPL"), as published by the Free Software Foundation.
//
// This program is distributed in the hope that it will be useful, but WITHOUT
// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
// FITNESS FOR A PARTICULAR PURPOSE.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package chart
import (
"fmt"
"github.com/olivere/elastic"
"github.com/erda-project/erda/modules/core/monitor/metric/query/chartmeta"
query "github.com/erda-project/erda/modules/core/monitor/metric/query/query/v1"
"github.com/erda-project/erda/modules/core/monitor/metric/query/units"
)
// Formater .
type Formater struct{}
// Format .
func (f *Formater) Format(ctx *query.Context, param string) (interface{}, error) {
var times []int64
appendTime := true
chart := ctx.ChartMeta
var title string
if chart != nil {
title = chart.Title
}
if len(ctx.Req.GroupBy) == 0 {
data, err := f.aggData(ctx, ctx.Resp.Aggregations, nil, ×, &appendTime, chart)
if err != nil {
return nil, err
}
return map[string]interface{}{
"times": times,
"data": data,
"title": title,
}, nil
}
data, err := f.groupData(0, ctx, ctx.Resp.Aggregations, ×, &appendTime, chart)
if err != nil {
return nil, err
}
return map[string]interface{}{
"times": times,
"data": data,
"title": title,
}, nil
}
func (f *Formater) groupData(depth int, ctx *query.Context, aggs elastic.Aggregations, times *[]int64, appendTime *bool, chart *chartmeta.ChartMeta) (interface{}, error) {
terms, ok := aggs.Terms(ctx.Req.GroupBy[depth].ID)
if !ok || terms == nil {
return nil, fmt.Errorf("invalid terms %s", ctx.Req.GroupBy[depth].ID)
}
list := make([]map[string]interface{}, 0)
last := depth >= len(ctx.Req.GroupBy)-1
for _, term := range terms.Buckets {
if last {
data, err := f.aggData(ctx, term.Aggregations, term.Key, times, appendTime, chart)
if err != nil {
return nil, err
}
list = append(list, data)
} else {
data, err := f.groupData(depth+1, ctx, term.Aggregations, times, appendTime, chart)
if err != nil {
return nil, err
}
group := make(map[string]interface{}, 3)
group["tag"] = term.Key
group["total"] = term.DocCount
group["data"] = data
list = append(list, group)
}
}
return list, nil
}
func (f *Formater) aggData(ctx *query.Context, aggs elastic.Aggregations, group interface{},
times *[]int64, appendTime *bool, chart *chartmeta.ChartMeta) (map[string]interface{}, error) {
result := make(map[string]interface{})
if ctx.Req.Aggregate != nil {
agg := ctx.Req.Aggregate
switch agg.FuncName {
case "histogram":
interval := ctx.Req.Interval
alignEnd := ctx.Req.AlignEnd
points := int(ctx.Req.Points)
histogram, ok := aggs.Histogram(ctx.Req.Aggregate.ID)
if !ok || histogram == nil {
return nil, fmt.Errorf("invalid histogram %s", ctx.Req.Aggregate.ID)
}
for _, col := range ctx.Req.Select {
var list []interface{}
for i, bucket := range histogram.Buckets {
if i+1 < len(histogram.Buckets) {
ctx.Attributes["next"] = histogram.Buckets[i+1].Aggregations
} else {
delete(ctx.Attributes, "next")
}
if i == 0 {
delete(ctx.Attributes, "previous")
} else {
ctx.Attributes["previous"] = histogram.Buckets[i-1].Aggregations
}
if i < points {
if *appendTime {
var t int64
if alignEnd {
t = int64((bucket.Key*float64(ctx.Req.OriginalTimeUnit) + interval) / 1000000)
} else {
t = int64(bucket.Key * float64(ctx.Req.OriginalTimeUnit) / 1000000)
}
*times = append(*times, t)
}
value, err := col.Function.Handle(ctx, bucket.Aggregations)
if err != nil {
return nil, err
}
value = setDefaultValue(ctx, value)
list = append(list, value)
}
}
delete(ctx.Attributes, "next")
delete(ctx.Attributes, "previous")
putColumnData(col, result, list, group, chart)
*appendTime = false
}
}
} else {
err := putAggData(ctx, aggs, result, group, chart)
if err != nil {
return nil, err
}
}
return result, nil
}
func setDefaultValue(ctx *query.Context, value interface{}) interface{} {
if value == nil {
if ctx.Req.DefaultNullValue != nil {
return ctx.Req.DefaultNullValue
}
}
return value
}
func putAggData(ctx *query.Context, aggs elastic.Aggregations, out map[string]interface{}, group interface{}, chart *chartmeta.ChartMeta) error {
if len(ctx.Req.Select) <= 0 && len(ctx.Req.GroupBy) > 0 {
out["data"] = nil
out["tag"] = group
return nil
}
for _, col := range ctx.Req.Select {
value, err := col.Function.Handle(ctx, aggs)
if err != nil {
return err
}
value = setDefaultValue(ctx, value)
putColumnData(col, out, value, group, chart)
}
return nil
}
func putColumnData(col *query.Column, out map[string]interface{}, value interface{}, group interface{}, chart *chartmeta.ChartMeta) map[string]interface{} {
// chart info
key := col.FuncName + "." + col.Property.Name
var meta *chartmeta.DataMeta
if chart != nil && chart.Defines != nil {
meta = chart.Defines[key]
}
data := make(map[string]interface{}, 3)
data["agg"] = col.FuncName
data["tag"] = group
if meta != nil {
data["name"] = meta.Label
data["unit"] = meta.Unit
data["unitType"] = meta.UnitType
data["chartType"] = meta.ChartType
data["axisIndex"] = meta.AxisIndex
if datas, ok := value.([]interface{}); ok {
var arr []interface{}
for _, d := range datas {
if meta.Unit != nil {
var OriginalUnit string
if meta.OriginalUnit != nil {
OriginalUnit = *meta.OriginalUnit
}
d = units.Convert(OriginalUnit, *meta.Unit, d)
}
arr = append(arr, d)
}
data["data"] = arr
} else {
if meta.Unit != nil {
var OriginalUnit string
if meta.OriginalUnit != nil {
OriginalUnit = *meta.OriginalUnit
}
data["data"] = units.Convert(OriginalUnit, *meta.Unit, value)
} else {
data["data"] = value
}
}
} else {
data["data"] = value
data["name"] = col.Property.Name
}
out[key] = data
return data
}
var formater Formater
func init() {
query.RegisterResponseFormater("chart", &formater)
query.RegisterResponseFormater("", &formater)
}