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ekinops_module_reader_amplifier.go
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/
ekinops_module_reader_amplifier.go
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package codecommunicator
import (
"context"
"fmt"
"github.com/RincewindsHat/thola/internal/device"
"github.com/RincewindsHat/thola/internal/network"
"github.com/pkg/errors"
"github.com/rs/zerolog/log"
"strings"
)
type ekinopsModuleReaderAmplifier struct {
ekinopsModuleData
boosterPorts ekinopsAmplifierOIDs
preAmpPorts ekinopsAmplifierOIDs
}
type ekinopsAmplifierOIDs struct {
identifierOID network.OID
labelOID network.OID
txPowerOID network.OID
rxPowerOID network.OID
gainOID network.OID
powerTransformFunc ekinopsPowerTransformFunc
}
func (m *ekinopsModuleReaderAmplifier) readModuleMetrics(ctx context.Context, interfaces []device.Interface) ([]device.Interface, error) {
var opticalAmplifierInterfaces []device.OpticalAmplifierInterface
// booster ports
oai, err := ekinopsReadAmplifierMetrics(ctx, m.boosterPorts)
if err != nil {
return nil, errors.Wrap(err, "failed to read out metrics for booster ports")
}
opticalAmplifierInterfaces = append(opticalAmplifierInterfaces, oai...)
// pre amp ports
oai, err = ekinopsReadAmplifierMetrics(ctx, m.preAmpPorts)
if err != nil {
return nil, errors.Wrap(err, "failed to read out metrics for pre amp ports")
}
opticalAmplifierInterfaces = append(opticalAmplifierInterfaces, oai...)
mappings, err := ekinopsInterfacesIfIdentifierToSliceIndex(interfaces)
if err != nil {
return nil, errors.Wrap(err, "failed to get interface identifier mappings")
}
for i, opticalAmplifierInterface := range opticalAmplifierInterfaces {
identifier := m.slotIdentifier + "/" + m.moduleName + "/" + strings.Split(*opticalAmplifierInterface.Identifier, "(")[0]
idx, ok := mappings[identifier]
if !ok {
log.Ctx(ctx).Debug().Msgf("interface for identifier '%s' not found", identifier)
continue
}
interfaces[idx].OpticalAmplifier = &opticalAmplifierInterfaces[i]
interfaces[idx].IfAlias = interfaces[idx].OpticalAmplifier.Label
}
return interfaces, nil
}
func ekinopsReadAmplifierMetrics(ctx context.Context, oids ekinopsAmplifierOIDs) ([]device.OpticalAmplifierInterface, error) {
con, ok := network.DeviceConnectionFromContext(ctx)
if !ok || con.SNMP == nil {
return nil, errors.New("no device connection available")
}
identifierResults, err := con.SNMP.SnmpClient.SNMPWalk(ctx, oids.identifierOID)
if err != nil {
return nil, errors.Wrap(err, "snmpwalk for identifier oid failed")
}
labelResults, err := con.SNMP.SnmpClient.SNMPWalk(ctx, oids.labelOID)
if err != nil {
return nil, errors.Wrap(err, "snmpwalk for label oid failed")
}
var opticalAmplifierInterfaces []device.OpticalAmplifierInterface
for k, identifierResult := range identifierResults {
var opticalAmplifierInterface device.OpticalAmplifierInterface
identifier, err := identifierResult.GetValue()
if err != nil {
return nil, errors.Wrap(err, "failed to get identifier for optical amplifier interface")
}
identifierString := identifier.String()
label, err := labelResults[k].GetValue()
if err != nil {
return nil, errors.Wrap(err, "failed to get label for optical amplifier interface")
}
labelString := label.String()
opticalAmplifierInterface.Identifier = &identifierString
opticalAmplifierInterface.Label = &labelString
opticalAmplifierInterfaces = append(opticalAmplifierInterfaces, opticalAmplifierInterface)
}
if c := len(opticalAmplifierInterfaces); c != 2 {
return nil, fmt.Errorf("found %d optical amplifier interfaces in amplifier module, expected: 2", c)
}
// tx power
txPowerResult, err := con.SNMP.SnmpClient.SNMPGet(ctx, oids.txPowerOID)
if err != nil {
return nil, errors.Wrap(err, "snmpget failed for tx power oid failed")
}
avVal, err := txPowerResult[0].GetValue()
if err != nil {
return nil, errors.Wrap(err, "snmpget failed for tx power oid failed")
}
av, err := avVal.Float64()
if err != nil {
return nil, errors.Wrap(err, "failed to parse snmp response to float64")
}
txPower := oids.powerTransformFunc(av)
opticalAmplifierInterfaces[1].TXPower = &txPower
// rx power
rxPowerResult, err := con.SNMP.SnmpClient.SNMPGet(ctx, oids.rxPowerOID)
if err != nil {
return nil, errors.Wrap(err, "snmpget failed for rx power oid failed")
}
avVal, err = rxPowerResult[0].GetValue()
if err != nil {
return nil, errors.Wrap(err, "snmpget failed for rx power oid failed")
}
av, err = avVal.Float64()
if err != nil {
return nil, errors.Wrap(err, "failed to parse snmp response to float64")
}
rxPower := oids.powerTransformFunc(av)
opticalAmplifierInterfaces[0].RXPower = &rxPower
// gain
gainResult, err := con.SNMP.SnmpClient.SNMPGet(ctx, oids.gainOID)
if err != nil {
return nil, errors.Wrap(err, "snmpget failed for gain oid failed")
}
avVal, err = gainResult[0].GetValue()
if err != nil {
return nil, errors.Wrap(err, "snmpget failed for gain oid failed")
}
av, err = avVal.Float64()
if err != nil {
return nil, errors.Wrap(err, "failed to parse gain to float64")
}
gain := oids.powerTransformFunc(av)
opticalAmplifierInterfaces[1].Gain = &gain
return opticalAmplifierInterfaces, nil
}