--- /dev/null
+/*
+==================================================================================
+ Copyright (c) 2019 AT&T Intellectual Property.
+ Copyright (c) 2019 Nokia
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+==================================================================================
+*/
+
+package e2ap
+
+import (
+ "fmt"
+ "gerrit.o-ran-sc.org/r/ric-plt/e2ap/pkg/packer"
+)
+
+//-----------------------------------------------------------------------------
+//
+//-----------------------------------------------------------------------------
+type E2APMsgPackerIf interface {
+ Pack(*packer.PackedData) (error, *packer.PackedData)
+ UnPack(msg *packer.PackedData) error
+ String() string
+}
+
+//-----------------------------------------------------------------------------
+//
+//-----------------------------------------------------------------------------
+type E2APMsgPackerSubscriptionRequestIf interface {
+ E2APMsgPackerIf
+ Set(*E2APSubscriptionRequest) error
+ Get() (error, *E2APSubscriptionRequest)
+}
+
+//-----------------------------------------------------------------------------
+//
+//-----------------------------------------------------------------------------
+type E2APMsgPackerSubscriptionResponseIf interface {
+ E2APMsgPackerIf
+ Set(*E2APSubscriptionResponse) error
+ Get() (error, *E2APSubscriptionResponse)
+}
+
+//-----------------------------------------------------------------------------
+//
+//-----------------------------------------------------------------------------
+type E2APMsgPackerSubscriptionFailureIf interface {
+ E2APMsgPackerIf
+ Set(*E2APSubscriptionFailure) error
+ Get() (error, *E2APSubscriptionFailure)
+}
+
+//-----------------------------------------------------------------------------
+//
+//-----------------------------------------------------------------------------
+type E2APMsgPackerSubscriptionDeleteRequestIf interface {
+ E2APMsgPackerIf
+ Set(*E2APSubscriptionDeleteRequest) error
+ Get() (error, *E2APSubscriptionDeleteRequest)
+}
+
+//-----------------------------------------------------------------------------
+//
+//-----------------------------------------------------------------------------
+type E2APMsgPackerSubscriptionDeleteResponseIf interface {
+ E2APMsgPackerIf
+ Set(*E2APSubscriptionDeleteResponse) error
+ Get() (error, *E2APSubscriptionDeleteResponse)
+}
+
+//-----------------------------------------------------------------------------
+//
+//-----------------------------------------------------------------------------
+type E2APMsgPackerSubscriptionDeleteFailureIf interface {
+ E2APMsgPackerIf
+ Set(*E2APSubscriptionDeleteFailure) error
+ Get() (error, *E2APSubscriptionDeleteFailure)
+}
+
+//-----------------------------------------------------------------------------
+//
+//-----------------------------------------------------------------------------
+type E2APMsgPackerIndicationIf interface {
+ E2APMsgPackerIf
+ Set(*E2APIndication) error
+ Get() (error, *E2APIndication)
+}
+
+//-----------------------------------------------------------------------------
+//
+//-----------------------------------------------------------------------------
+type E2APPackerIf interface {
+ NewPackerSubscriptionRequest() E2APMsgPackerSubscriptionRequestIf
+ NewPackerSubscriptionResponse() E2APMsgPackerSubscriptionResponseIf
+ NewPackerSubscriptionFailure() E2APMsgPackerSubscriptionFailureIf
+ NewPackerSubscriptionDeleteRequest() E2APMsgPackerSubscriptionDeleteRequestIf
+ NewPackerSubscriptionDeleteResponse() E2APMsgPackerSubscriptionDeleteResponseIf
+ NewPackerSubscriptionDeleteFailure() E2APMsgPackerSubscriptionDeleteFailureIf
+ NewPackerIndication() E2APMsgPackerIndicationIf
+ MessageInfo(msg *packer.PackedData) *packer.MessageInfo
+}
+
+//-----------------------------------------------------------------------------
+//
+//-----------------------------------------------------------------------------
+type E2APAutoPacker struct {
+ packer E2APPackerIf
+}
+
+func NewE2APAutoPacker(packer E2APPackerIf) *E2APAutoPacker {
+ return &E2APAutoPacker{packer: packer}
+}
+
+// TODO improve openasn handling to reuse PDU etc...
+// Now practically decodes two times each E2/X2 message, as first round solves message type
+func (autopacker *E2APAutoPacker) UnPack(msg *packer.PackedData) (error, interface{}) {
+ var err error = nil
+ msgInfo := autopacker.packer.MessageInfo(msg)
+ if msgInfo != nil {
+ switch msgInfo.MsgType {
+ case E2AP_InitiatingMessage:
+ switch msgInfo.MsgId {
+ case E2AP_RICSubscriptionRequest:
+ unpa := autopacker.packer.NewPackerSubscriptionRequest()
+ err = unpa.UnPack(msg)
+ if err == nil {
+ return unpa.Get()
+ }
+ case E2AP_RICSubscriptionDeleteRequest:
+ unpa := autopacker.packer.NewPackerSubscriptionDeleteRequest()
+ err = unpa.UnPack(msg)
+ if err == nil {
+ return unpa.Get()
+ }
+ case E2AP_RICIndication:
+ unpa := autopacker.packer.NewPackerIndication()
+ err = unpa.UnPack(msg)
+ if err == nil {
+ return unpa.Get()
+ }
+ default:
+ err = fmt.Errorf("MsgType: E2AP_InitiatingMessage => MsgId:%d unknown", msgInfo.MsgId)
+ }
+ case E2AP_SuccessfulOutcome:
+ switch msgInfo.MsgId {
+ case E2AP_RICSubscriptionResponse:
+ unpa := autopacker.packer.NewPackerSubscriptionResponse()
+ err = unpa.UnPack(msg)
+ if err == nil {
+ return unpa.Get()
+ }
+ case E2AP_RICSubscriptionDeleteResponse:
+ unpa := autopacker.packer.NewPackerSubscriptionDeleteResponse()
+ err = unpa.UnPack(msg)
+ if err == nil {
+ return unpa.Get()
+ }
+ default:
+ err = fmt.Errorf("MsgType: E2AP_SuccessfulOutcome => MsgId:%d unknown", msgInfo.MsgId)
+ }
+ case E2AP_UnsuccessfulOutcome:
+ switch msgInfo.MsgId {
+ case E2AP_RICSubscriptionFailure:
+ unpa := autopacker.packer.NewPackerSubscriptionFailure()
+ err = unpa.UnPack(msg)
+ if err == nil {
+ return unpa.Get()
+ }
+ case E2AP_RICSubscriptionDeleteFailure:
+ unpa := autopacker.packer.NewPackerSubscriptionDeleteFailure()
+ err = unpa.UnPack(msg)
+ if err == nil {
+ return unpa.Get()
+ }
+ default:
+ err = fmt.Errorf("MsgType: E2AP_UnsuccessfulOutcome => MsgId:%d unknown", msgInfo.MsgId)
+ }
+ default:
+ err = fmt.Errorf("MsgType: %d and MsgId:%d unknown", msgInfo.MsgType, msgInfo.MsgId)
+ }
+ } else {
+ err = fmt.Errorf("MsgInfo not received")
+ }
+ return err, nil
+}
+
+func (autopacker *E2APAutoPacker) Pack(data interface{}, trg *packer.PackedData) (error, *packer.PackedData) {
+ var err error = nil
+ switch themsg := data.(type) {
+ case *E2APSubscriptionRequest:
+ pa := autopacker.packer.NewPackerSubscriptionRequest()
+ err = pa.Set(themsg)
+ if err == nil {
+ return pa.Pack(trg)
+ }
+ case *E2APSubscriptionResponse:
+ pa := autopacker.packer.NewPackerSubscriptionResponse()
+ err = pa.Set(themsg)
+ if err == nil {
+ return pa.Pack(trg)
+ }
+ case *E2APSubscriptionFailure:
+ pa := autopacker.packer.NewPackerSubscriptionFailure()
+ err = pa.Set(themsg)
+ if err == nil {
+ return pa.Pack(trg)
+ }
+ case *E2APSubscriptionDeleteRequest:
+ pa := autopacker.packer.NewPackerSubscriptionDeleteRequest()
+ err = pa.Set(themsg)
+ if err == nil {
+ return pa.Pack(trg)
+ }
+ case *E2APSubscriptionDeleteResponse:
+ pa := autopacker.packer.NewPackerSubscriptionDeleteResponse()
+ err = pa.Set(themsg)
+ if err == nil {
+ return pa.Pack(trg)
+ }
+ case *E2APSubscriptionDeleteFailure:
+ pa := autopacker.packer.NewPackerSubscriptionDeleteFailure()
+ err = pa.Set(themsg)
+ if err == nil {
+ return pa.Pack(trg)
+ }
+ case *E2APIndication:
+ pa := autopacker.packer.NewPackerIndication()
+ err = pa.Set(themsg)
+ if err == nil {
+ return pa.Pack(trg)
+ }
+ default:
+ err = fmt.Errorf("unknown message")
+ }
+ return err, nil
+}