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// SPDX-License-Identifier: GPL-3.0-or-later
package snmp
import (
"fmt"
"strings"
"github.com/netdata/netdata/go/go.d.plugin/agent/module"
)
func newCharts(configs []ChartConfig) (*module.Charts, error) {
charts := &module.Charts{}
for _, cfg := range configs {
if len(cfg.IndexRange) == 2 {
cs, err := newChartsFromIndexRange(cfg)
if err != nil {
return nil, err
}
if err := charts.Add(*cs...); err != nil {
return nil, err
}
} else {
chart, err := newChart(cfg)
if err != nil {
return nil, err
}
if err = charts.Add(chart); err != nil {
return nil, err
}
}
}
return charts, nil
}
func newChartsFromIndexRange(cfg ChartConfig) (*module.Charts, error) {
var addPrio int
charts := &module.Charts{}
for i := cfg.IndexRange[0]; i <= cfg.IndexRange[1]; i++ {
chart, err := newChartWithOIDIndex(i, cfg)
if err != nil {
return nil, err
}
chart.Priority += addPrio
addPrio += 1
if err = charts.Add(chart); err != nil {
return nil, err
}
}
return charts, nil
}
func newChartWithOIDIndex(oidIndex int, cfg ChartConfig) (*module.Chart, error) {
chart, err := newChart(cfg)
if err != nil {
return nil, err
}
chart.ID = fmt.Sprintf("%s_%d", chart.ID, oidIndex)
chart.Title = fmt.Sprintf("%s %d", chart.Title, oidIndex)
for _, dim := range chart.Dims {
dim.ID = fmt.Sprintf("%s.%d", dim.ID, oidIndex)
}
return chart, nil
}
func newChart(cfg ChartConfig) (*module.Chart, error) {
chart := &module.Chart{
ID: cfg.ID,
Title: cfg.Title,
Units: cfg.Units,
Fam: cfg.Family,
Ctx: fmt.Sprintf("snmp.%s", cfg.ID),
Type: module.ChartType(cfg.Type),
Priority: cfg.Priority,
}
if chart.Title == "" {
chart.Title = "Untitled chart"
}
if chart.Units == "" {
chart.Units = "num"
}
if chart.Priority < module.Priority {
chart.Priority += module.Priority
}
seen := make(map[string]struct{})
var a string
for _, cfg := range cfg.Dimensions {
if cfg.Algorithm != "" {
seen[cfg.Algorithm] = struct{}{}
a = cfg.Algorithm
}
dim := &module.Dim{
ID: strings.TrimPrefix(cfg.OID, "."),
Name: cfg.Name,
Algo: module.DimAlgo(cfg.Algorithm),
Mul: cfg.Multiplier,
Div: cfg.Divisor,
}
if err := chart.AddDim(dim); err != nil {
return nil, err
}
}
if len(seen) == 1 && a != "" && len(chart.Dims) > 1 {
for _, d := range chart.Dims {
if d.Algo == "" {
d.Algo = module.DimAlgo(a)
}
}
}
return chart, nil
}
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