org.hyperledger.fabric.sdk.ChaincodeEvent 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.peer.ChaincodeEventOuterClass;
import org.hyperledger.fabric.sdk.exception.InvalidProtocolBufferRuntimeException;
/**
* Encapsulates a Chaincode event.
*/
public class ChaincodeEvent {
private final ByteString byteString;
private WeakReference chaincodeEvent;
ChaincodeEvent(ByteString byteString) {
this.byteString = byteString;
}
ChaincodeEventOuterClass.ChaincodeEvent getChaincodeEvent() {
ChaincodeEventOuterClass.ChaincodeEvent ret = null;
if (chaincodeEvent != null) {
ret = chaincodeEvent.get();
}
if (ret == null) {
try {
ret = ChaincodeEventOuterClass.ChaincodeEvent.parseFrom(byteString);
} catch (InvalidProtocolBufferException e) {
throw new InvalidProtocolBufferRuntimeException(e);
}
chaincodeEvent = new WeakReference<>(ret);
}
return ret;
}
/**
* Get Chaincode event's name;
*
* @return Return name;
*/
public String getEventName() {
return getChaincodeEvent().getEventName();
}
/**
* Get Chaincode identifier.
*
* @return The identifier
*/
public String getChaincodeId() {
return getChaincodeEvent().getChaincodeId();
}
/**
* Get transaction id associated with this event.
*
* @return The transactions id.
*/
public String getTxId() {
return getChaincodeEvent().getTxId();
}
/**
* Binary data associated with this event.
*
* @return binary data set by the chaincode for this event. This may return null.
*/
public byte[] getPayload() {
ByteString ret = getChaincodeEvent().getPayload();
if (null == ret) {
return null;
}
return ret.toByteArray();
}
}