move decodeLine function

This commit is contained in:
Lou Knauer 2022-01-20 10:14:28 +01:00
parent 3fb95f88ee
commit 15733cb1b7
2 changed files with 121 additions and 89 deletions

View File

@ -2,10 +2,12 @@ package main
import (
"context"
"fmt"
"log"
"math"
"strconv"
"sync"
"time"
"github.com/influxdata/line-protocol/v2/lineprotocol"
"github.com/nats-io/nats.go"
@ -113,3 +115,120 @@ func ReceiveNats(address string, handleLine func(dec *lineprotocol.Decoder) erro
log.Println("NATS connection closed")
return nil
}
func decodeLine(dec *lineprotocol.Decoder) error {
for dec.Next() {
rawmeasurement, err := dec.Measurement()
if err != nil {
return err
}
var cluster, host, typeName, typeId, subType, subTypeId string
for {
key, val, err := dec.NextTag()
if err != nil {
return err
}
if key == nil {
break
}
switch string(key) {
case "cluster":
cluster = string(val)
case "hostname":
host = string(val)
case "type":
typeName = string(val)
case "type-id":
typeId = string(val)
case "subtype":
subType = string(val)
case "stype-id":
subTypeId = string(val)
default:
// Ignore unkown tags (cc-metric-collector might send us a unit for example that we do not need)
// return fmt.Errorf("unkown tag: '%s' (value: '%s')", string(key), string(val))
}
}
selector := make([]string, 2, 4)
selector[0] = cluster
selector[1] = host
if len(typeId) > 0 {
selector = append(selector, typeName+typeId)
if len(subTypeId) > 0 {
selector = append(selector, subType+subTypeId)
}
}
metrics := make([]Metric, 0, 10)
measurement := string(rawmeasurement)
if measurement == "data" {
for {
key, val, err := dec.NextField()
if err != nil {
return err
}
if key == nil {
break
}
var value Float
if val.Kind() == lineprotocol.Float {
value = Float(val.FloatV())
} else if val.Kind() == lineprotocol.Int {
value = Float(val.IntV())
} else {
return fmt.Errorf("unsupported value type in message: %s", val.Kind().String())
}
metrics = append(metrics, Metric{
Name: string(key),
Value: value,
})
}
} else {
var value Float
for {
key, val, err := dec.NextField()
if err != nil {
return err
}
if key == nil {
break
}
if string(key) != "value" {
return fmt.Errorf("unkown field: '%s' (value: %#v)", string(key), val)
}
if val.Kind() == lineprotocol.Float {
value = Float(val.FloatV())
} else if val.Kind() == lineprotocol.Int {
value = Float(val.IntV())
} else {
return fmt.Errorf("unsupported value type in message: %s", val.Kind().String())
}
}
metrics = append(metrics, Metric{
Name: measurement,
Value: value,
})
}
t, err := dec.Time(lineprotocol.Second, time.Now())
if err != nil {
return err
}
// log.Printf("write: %s (%v) -> %v\n", string(measurement), selector, value)
if err := memoryStore.Write(selector, t.Unix(), metrics); err != nil {
return err
}
}
return nil
}

View File

@ -12,8 +12,6 @@ import (
"sync"
"syscall"
"time"
"github.com/influxdata/line-protocol/v2/lineprotocol"
)
type MetricConfig struct {
@ -55,91 +53,6 @@ func loadConfiguration(file string) Config {
return config
}
func handleLine(dec *lineprotocol.Decoder) error {
for dec.Next() {
measurement, err := dec.Measurement()
if err != nil {
return err
}
var cluster, host, typeName, typeId, subType, subTypeId string
for {
key, val, err := dec.NextTag()
if err != nil {
return err
}
if key == nil {
break
}
switch string(key) {
case "cluster":
cluster = string(val)
case "hostname":
host = string(val)
case "type":
typeName = string(val)
case "type-id":
typeId = string(val)
case "subtype":
subType = string(val)
case "stype-id":
subTypeId = string(val)
default:
// Ignore unkown tags (cc-metric-collector might send us a unit for example that we do not need)
// return fmt.Errorf("unkown tag: '%s' (value: '%s')", string(key), string(val))
}
}
selector := make([]string, 2, 4)
selector[0] = cluster
selector[1] = host
if len(typeId) > 0 {
selector = append(selector, typeName+typeId)
if len(subTypeId) > 0 {
selector = append(selector, subType+subTypeId)
}
}
var value Float
for {
key, val, err := dec.NextField()
if err != nil {
return err
}
if key == nil {
break
}
if string(key) != "value" {
return fmt.Errorf("unkown field: '%s' (value: %#v)", string(key), val)
}
if val.Kind() == lineprotocol.Float {
value = Float(val.FloatV())
} else if val.Kind() == lineprotocol.Int {
value = Float(val.IntV())
} else {
return fmt.Errorf("unsupported value type in message: %s", val.Kind().String())
}
}
t, err := dec.Time(lineprotocol.Second, time.Now())
if err != nil {
return err
}
// log.Printf("write: %s (%v) -> %v\n", string(measurement), selector, value)
if err := memoryStore.Write(selector, t.Unix(), []Metric{
{Name: string(measurement), Value: value},
}); err != nil {
return err
}
}
return nil
}
func intervals(wg *sync.WaitGroup, ctx context.Context) {
wg.Add(3)
go func() {
@ -270,8 +183,8 @@ func main() {
wg.Add(1)
go func() {
// err := ReceiveNats(conf.Nats, handleLine, runtime.NumCPU()-1, ctx)
err := ReceiveNats(conf.Nats, handleLine, 1, ctx)
// err := ReceiveNats(conf.Nats, decodeLine, runtime.NumCPU()-1, ctx)
err := ReceiveNats(conf.Nats, decodeLine, 1, ctx)
if err != nil {
log.Fatal(err)