import (
"fmt"
+ "gerrit.o-ran-sc.org/r/ric-plt/xapp-frame/pkg/xapp"
+ "strconv"
+ "sync"
)
-/*
-Implements a record of ongoing transactions and helper functions to CRUD the records.
-*/
-type Tracker struct {
- transaction_table map[Transaction_key]Transaction
+//-----------------------------------------------------------------------------
+//
+//-----------------------------------------------------------------------------
+type TransactionXappKey struct {
+ RmrEndpoint
+ Xid string // xapp xid in req
}
-func (t *Tracker) Init() {
- t.transaction_table = make(map[Transaction_key]Transaction)
+func (key *TransactionXappKey) String() string {
+ return key.RmrEndpoint.String() + "/" + key.Xid
}
-/*
-Checks if a tranascation with similar type has been ongoing. If not then creates one.
-Returns error if there is similar transatcion ongoing.
-*/
-func (t *Tracker) Track_transaction(key Transaction_key, xact Transaction) error{
- if _, ok := t.transaction_table[key]; ok {
- // TODO: Implement merge related check here. If the key is same but the value is different.
- err := fmt.Errorf("Transaction tracker: Similar transaction with sub id %d and type %s is ongoing", key.SubID, key.trans_type )
- return err
+//-----------------------------------------------------------------------------
+//
+//-----------------------------------------------------------------------------
+type Transaction struct {
+ tracker *Tracker // tracker instance
+ Subs *Subscription
+ RmrEndpoint RmrEndpoint
+ Xid string // xapp xid in req
+ OrigParams *xapp.RMRParams // request orginal params
+ RespReceived bool
+ ForwardRespToXapp bool
+ mutex sync.Mutex
+}
+
+func (t *Transaction) String() string {
+ t.mutex.Lock()
+ defer t.mutex.Unlock()
+ var subId string = "?"
+ if t.Subs != nil {
+ subId = strconv.FormatUint(uint64(t.Subs.Seq), 10)
}
- t.transaction_table[key] = xact
- return nil
+ return subId + "/" + t.RmrEndpoint.String() + "/" + t.Xid
}
-/*
-Retreives the transaction table entry for the given request.
-Returns error in case the transaction cannot be found.
-*/
-func (t *Tracker) Update_transaction(SubID uint16, trans_type Action, xact Transaction) error{
- key := Transaction_key{SubID, trans_type}
- if _, ok := t.transaction_table[key]; ok {
- // TODO: Implement merge related check here. If the key is same but the value is different.
- err := fmt.Errorf("Transaction tracker: Similar transaction with sub id %d and type %s is ongoing", key.SubID, key.trans_type )
- return err
+func (t *Transaction) CheckResponseReceived() bool {
+ t.mutex.Lock()
+ defer t.mutex.Unlock()
+ if t.RespReceived == false {
+ t.RespReceived = true
+ return false
}
- t.transaction_table[key] = xact
- return nil
+ return true
}
-/*
-Retreives the transaction table entry for the given request.
-Returns error in case the transaction cannot be found.
-*/
-func (t *Tracker) Retrive_transaction(subID uint16, act Action) (Transaction, error){
- key := Transaction_key{subID, act}
- var xact Transaction
- if xact, ok := t.transaction_table[key]; ok {
- return xact, nil
+func (t *Transaction) RetryTransaction() {
+ t.mutex.Lock()
+ defer t.mutex.Unlock()
+ t.RespReceived = false
+}
+
+func (t *Transaction) Release() {
+ t.mutex.Lock()
+ defer t.mutex.Unlock()
+ if t.Subs != nil {
+ t.Subs.UnSetTransaction(t)
+ }
+ if t.tracker != nil {
+ xappkey := TransactionXappKey{t.RmrEndpoint, t.Xid}
+ t.tracker.UnTrackTransaction(xappkey)
}
- err := fmt.Errorf("Tranaction record for Subscription ID %d and action %s does not exist", subID, act)
- return xact, err
+ t.Subs = nil
+ t.tracker = nil
}
-/*
-Deletes the transaction table entry for the given request and returns the deleted xapp's address and port for reference.
-Returns error in case the transaction cannot be found.
-*/
-func (t *Tracker) complete_transaction(subID uint16, act Action) (Transaction, error){
- key := Transaction_key{subID, act}
- var empty_transaction Transaction
- if xact, ok := t.transaction_table[key]; ok {
- delete(t.transaction_table, key)
- return xact, nil
+//-----------------------------------------------------------------------------
+//
+//-----------------------------------------------------------------------------
+type Tracker struct {
+ transactionXappTable map[TransactionXappKey]*Transaction
+ mutex sync.Mutex
+}
+
+func (t *Tracker) Init() {
+ t.transactionXappTable = make(map[TransactionXappKey]*Transaction)
+}
+
+func (t *Tracker) TrackTransaction(subs *Subscription, endpoint RmrEndpoint, params *xapp.RMRParams, respReceived bool, forwardRespToXapp bool) (*Transaction, error) {
+
+ trans := &Transaction{
+ tracker: nil,
+ Subs: nil,
+ RmrEndpoint: endpoint,
+ Xid: params.Xid,
+ OrigParams: params,
+ RespReceived: respReceived,
+ ForwardRespToXapp: forwardRespToXapp,
+ }
+
+ t.mutex.Lock()
+ defer t.mutex.Unlock()
+
+ xappkey := TransactionXappKey{endpoint, params.Xid}
+ if _, ok := t.transactionXappTable[xappkey]; ok {
+ err := fmt.Errorf("Tracker: Similar transaction with xappkey %s is ongoing, transaction %s not created ", xappkey, trans)
+ return nil, err
+ }
+
+ if subs.SetTransaction(trans) == false {
+ othTrans := subs.GetTransaction()
+ err := fmt.Errorf("Tracker: Subscription %s got already transaction ongoing: %s, transaction %s not created", subs, othTrans, trans)
+ return nil, err
+ }
+ trans.Subs = subs
+ if (trans.Subs.RmrEndpoint.Addr != trans.RmrEndpoint.Addr) || (trans.Subs.RmrEndpoint.Port != trans.RmrEndpoint.Port) {
+ err := fmt.Errorf("Tracker: Subscription endpoint %s mismatch with trans: %s", subs, trans)
+ trans.Subs.UnSetTransaction(nil)
+ return nil, err
+ }
+
+ trans.tracker = t
+ t.transactionXappTable[xappkey] = trans
+ return trans, nil
+}
+
+func (t *Tracker) UnTrackTransaction(xappKey TransactionXappKey) (*Transaction, error) {
+ t.mutex.Lock()
+ defer t.mutex.Unlock()
+ if trans, ok2 := t.transactionXappTable[xappKey]; ok2 {
+ delete(t.transactionXappTable, xappKey)
+ return trans, nil
}
- err := fmt.Errorf("Tranaction record for Subscription ID %d and action %s does not exist", subID, act)
- return empty_transaction, err
+ return nil, fmt.Errorf("Tracker: No record for xappkey %s", xappKey)
}
Code Review / ric-plt / submgr.git / blobdiff