X-Git-Url: https://gerrit.o-ran-sc.org/r/gitweb?a=blobdiff_plain;f=e2ap%2Fpkg%2Fe2ap%2Fe2ap_packerif.go;fp=e2ap%2Fpkg%2Fe2ap%2Fe2ap_packerif.go;h=d69a7160d4a003e453810b73e10ef94cdf32cf88;hb=ff8dccd02d76eebfccc0b509ce0b42a2c1760e12;hp=0000000000000000000000000000000000000000;hpb=f1d0eb6a82e11f14f60e3636d526299ced0173ea;p=ric-plt%2Fsubmgr.git

diff --git a/e2ap/pkg/e2ap/e2ap_packerif.go b/e2ap/pkg/e2ap/e2ap_packerif.go
new file mode 100644
index 0000000..d69a716
--- /dev/null
+++ b/e2ap/pkg/e2ap/e2ap_packerif.go
@@ -0,0 +1,246 @@
+/*
+==================================================================================
+  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
+}