/
function.go
78 lines (71 loc) · 2.59 KB
/
function.go
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package averageSeries
import (
"github.com/go-graphite/carbonapi/expr/helper"
"github.com/go-graphite/carbonapi/expr/interfaces"
"github.com/go-graphite/carbonapi/expr/types"
"github.com/go-graphite/carbonapi/pkg/parser"
)
type averageSeries struct {
interfaces.FunctionBase
}
func GetOrder() interfaces.Order {
return interfaces.Any
}
func New(configFile string) []interfaces.FunctionMetadata {
f := &averageSeries{}
res := make([]interfaces.FunctionMetadata, 0)
for _, n := range []string{"avg", "averageSeries"} {
res = append(res, interfaces.FunctionMetadata{Name: n, F: f})
}
return res
}
// averageSeries(*seriesLists)
func (f *averageSeries) Do(e parser.Expr, from, until int32, values map[parser.MetricRequest][]*types.MetricData) ([]*types.MetricData, error) {
args, err := helper.GetSeriesArgsAndRemoveNonExisting(e, from, until, values)
if err != nil {
return nil, err
}
e.SetTarget("averageSeries")
return helper.AggregateSeries(e, args, func(values []float64) float64 {
sum := 0.0
for _, value := range values {
sum += value
}
return sum / float64(len(values))
})
}
// Description is auto-generated description, based on output of https://github.com/graphite-project/graphite-web
func (f *averageSeries) Description() map[string]types.FunctionDescription {
return map[string]types.FunctionDescription{
"avg": {
Description: "Short Alias: avg()\n\nTakes one metric or a wildcard seriesList.\nDraws the average value of all metrics passed at each time.\n\nExample:\n\n.. code-block:: none\n\n &target=averageSeries(company.server.*.threads.busy)\n\nThis is an alias for :py:func:`aggregate <aggregate>` with aggregation ``average``.",
Function: "avg(*seriesLists)",
Group: "Combine",
Module: "graphite.render.functions",
Name: "avg",
Params: []types.FunctionParam{
{
Multiple: true,
Name: "seriesLists",
Required: true,
Type: types.SeriesList,
},
},
},
"averageSeries": {
Description: "Short Alias: avg()\n\nTakes one metric or a wildcard seriesList.\nDraws the average value of all metrics passed at each time.\n\nExample:\n\n.. code-block:: none\n\n &target=averageSeries(company.server.*.threads.busy)\n\nThis is an alias for :py:func:`aggregate <aggregate>` with aggregation ``average``.",
Function: "averageSeries(*seriesLists)",
Group: "Combine",
Module: "graphite.render.functions",
Name: "averageSeries",
Params: []types.FunctionParam{
{
Multiple: true,
Name: "seriesLists",
Required: true,
Type: types.SeriesList,
},
},
},
}
}