org.hyperledger.fabric.sdk.EnvelopeDeserializer 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 com.google.protobuf.ByteString;
import com.google.protobuf.InvalidProtocolBufferException;
import org.hyperledger.fabric.protos.common.Common.ChannelHeader;
import org.hyperledger.fabric.protos.common.Common.Envelope;
import org.hyperledger.fabric.protos.common.Common.Payload;
import org.hyperledger.fabric.protos.peer.FabricTransaction;
import org.hyperledger.fabric.sdk.exception.InvalidProtocolBufferRuntimeException;
class EnvelopeDeserializer {
protected final ByteString byteString;
private final byte validcode;
private WeakReference envelope;
private WeakReference payload;
EnvelopeDeserializer(ByteString byteString, byte validcode) {
this.byteString = byteString;
this.validcode = validcode;
}
Envelope getEnvelope() {
Envelope ret = null;
if (envelope != null) {
ret = envelope.get();
}
if (ret == null) {
try {
ret = Envelope.parseFrom(byteString);
} catch (InvalidProtocolBufferException e) {
throw new InvalidProtocolBufferRuntimeException(e);
}
envelope = new WeakReference<>(ret);
}
return ret;
}
byte[] getSignature() {
return getEnvelope().getSignature().toByteArray();
}
PayloadDeserializer getPayload() {
PayloadDeserializer ret = null;
if (payload != null) {
ret = payload.get();
}
if (ret == null) {
ret = new PayloadDeserializer(getEnvelope().getPayload());
payload = new WeakReference<>(ret);
}
return ret;
}
private Integer type = null;
int getType() {
if (type == null) {
type = getPayload().getHeader().getChannelHeader().getType();
}
return type;
}
/**
* @return whether this Transaction is marked as TxValidationCode.VALID
*/
public boolean isValid() {
return validcode == FabricTransaction.TxValidationCode.VALID_VALUE;
}
/**
* @return the validation code of this Transaction (enumeration TxValidationCode in Transaction.proto)
*/
public byte validationCode() {
return validcode;
}
static EnvelopeDeserializer newInstance(ByteString byteString, byte b) throws InvalidProtocolBufferException {
EnvelopeDeserializer ret;
final int type = ChannelHeader.parseFrom(Payload.parseFrom(Envelope.parseFrom(byteString).getPayload())
.getHeader().getChannelHeader()).getType();
/*
MESSAGE = 0; // Used for messages which are signed but opaque
CONFIG = 1; // Used for messages which express the channel config
CONFIG_UPDATE = 2; // Used for transactions which update the channel config
ENDORSER_TRANSACTION = 3; // Used by the SDK to submit endorser based transactions
ORDERER_TRANSACTION = 4; // Used internally by the orderer for management
DELIVER_SEEK_INFO = 5; // Used as the type for Envelope messages submitted to instruct the Deliver API to seek
CHAINCODE_PACKAGE = 6; // Used for packaging chaincode artifacts for install
*/
switch (type) {
case 3:
ret = new EndorserTransactionEnvDeserializer(byteString, b);
break;
default: //just assume base properties.
ret = new EnvelopeDeserializer(byteString, b);
break;
}
return ret;
}
}