org.hyperledger.fabric.sdk.TransactionDeserializer Maven / Gradle / Ivy
/*
*
* Copyright 2016,2017 DTCC, Fujitsu Australia Software Technology, IBM - All Rights Reserved.
*
* 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 org.hyperledger.fabric.sdk;
import java.lang.ref.WeakReference;
import java.util.Collections;
import java.util.Iterator;
import java.util.Map;
import java.util.WeakHashMap;
import com.google.protobuf.ByteString;
import com.google.protobuf.InvalidProtocolBufferException;
import org.hyperledger.fabric.sdk.exception.InvalidProtocolBufferRuntimeException;
import static org.hyperledger.fabric.protos.peer.FabricTransaction.Transaction;
class TransactionDeserializer {
private final ByteString byteString;
private WeakReference transaction;
private final Map> transactionActions =
Collections.synchronizedMap(new WeakHashMap>());
TransactionDeserializer(ByteString byteString) {
this.byteString = byteString;
}
Transaction getTransaction() {
Transaction ret = null;
if (transaction != null) {
ret = transaction.get();
}
if (ret == null) {
try {
ret = Transaction.parseFrom(byteString);
} catch (InvalidProtocolBufferException e) {
throw new InvalidProtocolBufferRuntimeException(e);
}
transaction = new WeakReference<>(ret);
}
return ret;
}
int getActionsCount() {
return getTransaction().getActionsCount();
}
TransactionActionDeserializer getTransactionAction(int index) {
final Transaction transaction = getTransaction();
if (index >= getActionsCount()) {
return null;
}
WeakReference envelopeWeakReference = transactionActions.get(index);
if (null != envelopeWeakReference) {
TransactionActionDeserializer ret = envelopeWeakReference.get();
if (null != ret) {
return ret;
}
}
TransactionActionDeserializer transactionActionDeserialize = new TransactionActionDeserializer(transaction.getActions(index));
transactionActions.put(index, new WeakReference<>(transactionActionDeserialize));
return transactionActionDeserialize;
}
Iterable getTransactionActions() {
return new TransactionActionIterable();
}
class TransactionActionIterator implements Iterator {
int ci = 0;
final int max;
TransactionActionIterator() {
max = getActionsCount();
}
@Override
public boolean hasNext() {
return ci < max;
}
@Override
public TransactionActionDeserializer next() {
return getTransactionAction(ci++);
}
}
class TransactionActionIterable implements Iterable {
@Override
public Iterator iterator() {
return new TransactionActionIterator();
}
}
}