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/*
==================================================================================
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 control
import (
"gerrit.o-ran-sc.org/r/ric-plt/e2ap/pkg/e2ap"
"gerrit.o-ran-sc.org/r/ric-plt/xapp-frame/pkg/xapp"
"strconv"
"sync"
"time"
)
//-----------------------------------------------------------------------------
//
//-----------------------------------------------------------------------------
type TransactionIf interface {
String() string
Release()
SendEvent(interface{}, time.Duration) (bool, bool)
WaitEvent(time.Duration) (interface{}, bool)
}
//-----------------------------------------------------------------------------
//
//-----------------------------------------------------------------------------
type Transaction struct {
mutex sync.Mutex //
Seq uint64 //transaction sequence
tracker *Tracker //tracker instance
Meid *xapp.RMRMeid //meid transaction related
Mtype int //Encoded message type to be send
Payload *e2ap.PackedData //Encoded message to be send
EventChan chan interface{}
}
func (t *Transaction) String() string {
meidstr := "N/A"
if t.Meid != nil {
meidstr = t.Meid.String()
}
return "trans(" + strconv.FormatUint(uint64(t.Seq), 10) + "/" + meidstr + ")"
}
func (t *Transaction) SendEvent(event interface{}, waittime time.Duration) (bool, bool) {
if waittime > 0 {
select {
case t.EventChan <- event:
return true, false
case <-time.After(waittime):
return false, true
}
return false, false
}
t.EventChan <- event
return true, false
}
func (t *Transaction) WaitEvent(waittime time.Duration) (interface{}, bool) {
if waittime > 0 {
select {
case event := <-t.EventChan:
return event, false
case <-time.After(waittime):
return nil, true
}
}
event := <-t.EventChan
return event, false
}
func (t *Transaction) GetMtype() int {
t.mutex.Lock()
defer t.mutex.Unlock()
return t.Mtype
}
func (t *Transaction) GetMeid() *xapp.RMRMeid {
t.mutex.Lock()
defer t.mutex.Unlock()
if t.Meid != nil {
return t.Meid
}
return nil
}
func (t *Transaction) GetPayload() *e2ap.PackedData {
t.mutex.Lock()
defer t.mutex.Unlock()
return t.Payload
}
//-----------------------------------------------------------------------------
//
//-----------------------------------------------------------------------------
type TransactionSubs struct {
Transaction //
}
func (t *TransactionSubs) String() string {
return "transsubs(" + t.Transaction.String() + ")"
}
func (t *TransactionSubs) Release() {
t.mutex.Lock()
xapp.Logger.Debug("RELEASE %s", t.String())
t.tracker = nil
t.mutex.Unlock()
}
//-----------------------------------------------------------------------------
//
//-----------------------------------------------------------------------------
type TransactionXappKey struct {
xapp.RmrEndpoint
Xid string // xapp xid in req
}
func (key *TransactionXappKey) String() string {
return "transkey(" + key.RmrEndpoint.String() + "/" + key.Xid + ")"
}
//-----------------------------------------------------------------------------
//
//-----------------------------------------------------------------------------
type TransactionXapp struct {
Transaction
XappKey *TransactionXappKey
RequestId e2ap.RequestId
}
func (t *TransactionXapp) String() string {
var transkey string = "transkey(N/A)"
if t.XappKey != nil {
transkey = t.XappKey.String()
}
return "transxapp(" + t.Transaction.String() + "/" + transkey + "/" + strconv.FormatUint(uint64(t.RequestId.InstanceId), 10) + ")"
}
func (t *TransactionXapp) GetEndpoint() *xapp.RmrEndpoint {
t.mutex.Lock()
defer t.mutex.Unlock()
if t.XappKey != nil {
return &t.XappKey.RmrEndpoint
}
return nil
}
func (t *TransactionXapp) GetXid() string {
t.mutex.Lock()
defer t.mutex.Unlock()
if t.XappKey != nil {
return t.XappKey.Xid
}
return ""
}
func (t *TransactionXapp) GetSrc() string {
t.mutex.Lock()
defer t.mutex.Unlock()
if t.XappKey != nil {
return t.XappKey.RmrEndpoint.String()
}
return ""
}
func (t *TransactionXapp) GetSubId() uint32 {
t.mutex.Lock()
defer t.mutex.Unlock()
return t.RequestId.InstanceId
}
func (t *TransactionXapp) Release() {
t.mutex.Lock()
xapp.Logger.Debug("RELEASE %s", t.String())
tracker := t.tracker
xappkey := t.XappKey
t.tracker = nil
t.mutex.Unlock()
if tracker != nil && xappkey != nil {
tracker.UnTrackTransaction(*xappkey)
}
}