/
transaction_context.go
75 lines (64 loc) · 1.97 KB
/
transaction_context.go
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/*
Copyright IBM Corp. All Rights Reserved.
SPDX-License-Identifier: Apache-2.0
*/
package chaincode
import (
"sync"
commonledger "github.com/hyperledger/fabric/common/ledger"
"github.com/hyperledger/fabric/core/ledger"
pb "github.com/hyperledger/fabric/protos/peer"
)
type TransactionContext struct {
ChainID string
SignedProp *pb.SignedProposal
Proposal *pb.Proposal
ResponseNotifier chan *pb.ChaincodeMessage
TXSimulator ledger.TxSimulator
HistoryQueryExecutor ledger.HistoryQueryExecutor
// tracks open iterators used for range queries
queryMutex sync.Mutex
queryIteratorMap map[string]commonledger.ResultsIterator
pendingQueryResults map[string]*PendingQueryResult
}
func (t *TransactionContext) InitializeQueryContext(queryID string, iter commonledger.ResultsIterator) {
t.queryMutex.Lock()
if t.queryIteratorMap == nil {
t.queryIteratorMap = map[string]commonledger.ResultsIterator{}
}
if t.pendingQueryResults == nil {
t.pendingQueryResults = map[string]*PendingQueryResult{}
}
t.queryIteratorMap[queryID] = iter
t.pendingQueryResults[queryID] = &PendingQueryResult{}
t.queryMutex.Unlock()
}
func (t *TransactionContext) GetQueryIterator(queryID string) commonledger.ResultsIterator {
t.queryMutex.Lock()
iter := t.queryIteratorMap[queryID]
t.queryMutex.Unlock()
return iter
}
func (t *TransactionContext) GetPendingQueryResult(queryID string) *PendingQueryResult {
t.queryMutex.Lock()
result := t.pendingQueryResults[queryID]
t.queryMutex.Unlock()
return result
}
func (t *TransactionContext) CleanupQueryContext(queryID string) {
t.queryMutex.Lock()
defer t.queryMutex.Unlock()
iter := t.queryIteratorMap[queryID]
if iter != nil {
iter.Close()
}
delete(t.queryIteratorMap, queryID)
delete(t.pendingQueryResults, queryID)
}
func (t *TransactionContext) CloseQueryIterators() {
t.queryMutex.Lock()
defer t.queryMutex.Unlock()
for _, iter := range t.queryIteratorMap {
iter.Close()
}
}