Extracting Subscription-Id AVP from incoming message

[m00zi]

Hi, In the coming diameter messages there are 2 subscription-ID with different Enumerated
1- datatype.Enumerated(0) datatype.UTF8String("<<>>")
2- datatype.Enumerated(1) datatype.UTF8String("<<>>")

I have the struct defined, and it is working fine, but since there are 2 SubscriptionID1, I can get the first one only, how I can get the IMSI too, which is the second one, here is the struct :

type SubscriptionID struct {
	SubscriptionIDType datatype.Enumerated `avp:"Subscription-Id-Type"`
	SubscriptionIDData datatype.UTF8String `avp:"Subscription-Id-Data"`
}
.
.
.
type CCR struct {
	SessionID                     datatype.UTF8String           `avp:"Session-Id"`
	OriginHost                    datatype.DiameterIdentity     `avp:"Origin-Host"`
	OriginRealm                   datatype.DiameterIdentity     `avp:"Origin-Realm"`
	DestinationRealm              datatype.DiameterIdentity     `avp:"Destination-Realm"`
	AuthApplicationID             datatype.Unsigned32           `avp:"Auth-Application-Id"`
	ServiceContextID              datatype.UTF8String           `avp:"Service-Context-Id"`
	CCRequestType                 datatype.Enumerated           `avp:"CC-Request-Type"`
	CCRequestNumber               datatype.Unsigned32           `avp:"CC-Request-Number"`
	DestinationHost               datatype.DiameterIdentity     `avp:"Destination-Host"`
	UserName                      string                        `avp:"User-Name"`
	OriginStateID                 datatype.Unsigned32           `avp:"Origin-State-Id"`
	EventTimestamp                datatype.Time                 `avp:"Event-Timestamp"`
	SubscriptionID1               SubscriptionID                `avp:"Subscription-Id"`
	SubscriptionID2               SubscriptionID                `avp:"Subscription-Id"`
	MultipleServicesIndicator     datatype.Enumerated           `avp:"Multiple-Services-Indicator"`
	MultipleServicesCreditControl MultipleServicesCreditControl `avp:"Multiple-Services-Credit-Control"`
	UserEquipmentInfo             UserEquipmentInfo             `avp:"User-Equipment-Info"`
	ServiceInformation            ServiceInformation            `avp:"Service-Information"`
	TerminationCause              datatype.Enumerated           `avp:"Termination-Cause"`
}

[vivl4725]

You can do like this

type CreditControlRequest struct {
// Code ...
    SubscriptionID []struct {
		SubscriptionIDType datatype.Enumerated `avp:"Subscription-Id-Type"`
		SubscriptionIDData string              `avp:"Subscription-Id-Data"`
    } `avp:"Subscription-Id"`
// Code ...
}

@k0teyk0

// GetIMSIAndMSISDN get imsi and msisdn from request data
func (ccr CreditControlRequest) GetIMSIAndMSISDN() (imsi string, msisdn string) {
	for _, sID := range ccr.SubscriptionID {
		switch sID.SubscriptionIDType {
		case 0:
			msisdn = sID.SubscriptionIDData
		case 1:
			imsi = sID.SubscriptionIDData
		default:
			continue
		}
	}

	return
}