org.hyperledger.fabric.sdk.ChaincodeActionDeserializer Maven / Gradle / Ivy

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Java SDK for Hyperledger Fabric. Deprecated as of Fabric v2.5, replaced by org.hyperledger.fabric:fabric-gateway.

There is a newer version: 2.2.26

/*
 *
 *  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.ledger.rwset.Rwset.TxReadWriteSet;
import org.hyperledger.fabric.protos.peer.Chaincode;
import org.hyperledger.fabric.protos.peer.ProposalPackage;
import org.hyperledger.fabric.sdk.exception.InvalidProtocolBufferRuntimeException;

class ChaincodeActionDeserializer {
    private final ByteString byteString;
    private WeakReference chaincodeAction;

    ChaincodeActionDeserializer(ByteString byteString) {
        this.byteString = byteString;
    }

    ProposalPackage.ChaincodeAction getChaincodeAction() {
        ProposalPackage.ChaincodeAction ret = chaincodeAction != null ? chaincodeAction.get() : null;

        if (null == ret) {
            try {
                ret = ProposalPackage.ChaincodeAction.parseFrom(byteString);
            } catch (InvalidProtocolBufferException e) {
                throw new InvalidProtocolBufferRuntimeException(e);
            }

            chaincodeAction = new WeakReference<>(ret);
        }

        return ret;
    }

    Chaincode.ChaincodeID getChaincodeID() {
        ProposalPackage.ChaincodeAction chaincodeAction = getChaincodeAction();
        return chaincodeAction.hasChaincodeId() ? chaincodeAction.getChaincodeId() : null;
    }

    ChaincodeEvent getEvent() {
        ProposalPackage.ChaincodeAction ca = getChaincodeAction();
        ByteString eventsBytes = ca.getEvents();
        if (eventsBytes == null || eventsBytes.isEmpty()) {
            return null;
        }

        return new ChaincodeEvent(eventsBytes);
    }

    TxReadWriteSet getResults() {
        try {
            return TxReadWriteSet.parseFrom(getChaincodeAction().getResults());
        } catch (InvalidProtocolBufferException e) {
            throw new InvalidProtocolBufferRuntimeException(e);
        }
    }

    String getResponseMessage() {
        return getChaincodeAction().getResponse().getMessage();
    }

    byte[] getResponseMessageBytes() {
        return getChaincodeAction().getResponse().getMessageBytes().toByteArray();
    }

    int getResponseStatus() {
        return getChaincodeAction().getResponse().getStatus();
    }

    ByteString getResponsePayload() {
        return getChaincodeAction().getResponse().getPayload();
    }
}