106 lines
4.1 KiB
Java
106 lines
4.1 KiB
Java
package blockchain.client;
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import blockchain.configuration.Config;
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import org.apache.log4j.BasicConfigurator;
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import org.apache.log4j.Logger;
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import org.hyperledger.fabric.sdk.*;
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import org.hyperledger.fabric.sdk.exception.InvalidArgumentException;
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import org.hyperledger.fabric.sdk.exception.ProposalException;
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import org.hyperledger.fabric.sdk.exception.TransactionException;
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import java.util.Collection;
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import java.util.List;
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import java.util.stream.Collectors;
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public class ChannelClientWrapper {
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private String name;
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static private Channel channel;
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private FabricClientWrapper fabricClientWrapper;
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public String getName(){
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return name;
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}
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public Channel getChannel(){
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return channel;
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}
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public FabricClientWrapper getFabricClientWrapper(){
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return fabricClientWrapper;
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}
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public ChannelClientWrapper(String name, Channel channel, FabricClientWrapper fabricClientWrapper){
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this.name=name;
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this.channel=channel;
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this.fabricClientWrapper=fabricClientWrapper;
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}
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public Collection<ProposalResponse> queryByChainCode(QueryByChaincodeRequest queryByChaincodeRequest) throws InvalidArgumentException, ProposalException {
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return channel.queryByChaincode(queryByChaincodeRequest);
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}
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public Collection<ProposalResponse> queryByChainCode(String chaincodeName,String fuctionName, String[] args) throws InvalidArgumentException, ProposalException {
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QueryByChaincodeRequest request = fabricClientWrapper.getClient().newQueryProposalRequest();
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ChaincodeID chaincodeID = ChaincodeID.newBuilder().setName(chaincodeName).build();
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request.setChaincodeID(chaincodeID);
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request.setFcn(fuctionName);
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if(args != null){
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request.setArgs(args);
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}
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Collection<ProposalResponse> response = channel.queryByChaincode(request);
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return response;
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}
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//Method to init the channel for query
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static public ChannelClientWrapper setupChannel(FabricClientWrapper fabricClientWrapper) throws InvalidArgumentException, TransactionException {
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ChannelClientWrapper channelClientWrapper = fabricClientWrapper.createChannelClient(Config.CHANNEL_NAME);
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channel = channelClientWrapper.getChannel();
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Peer peer = fabricClientWrapper.getClient().newPeer(Config.ORG1_PEER_0,Config.ORG1_PEER_0_URL);
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//EventHub eventHub = fabricClientWrapper.getClient().newEventHub("eventhub01", "grpc://vps577432.ovh.net:8053");
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EventHub eventHub = fabricClientWrapper.getClient().newEventHub("eventhub01", "grpc://93.30.148.59:7051");
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//EventHub eventHub = fabricClientWrapper.getClient().newEventHub("eventhub01", "grpc://vps592802.ovh.net:7053");
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Orderer orderer = fabricClientWrapper.getClient().newOrderer(Config.ORDERER_NAME,Config.ORDERER_URL);
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channel.addPeer(peer);
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channel.addEventHub(eventHub);
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channel.addOrderer(orderer);
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channel.initialize();
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return channelClientWrapper;
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}
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//Wrapper for channel.sendTransactionProposal
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public Collection<ProposalResponse> sendTransactionProposal (TransactionProposalRequest transactionProposalRequest){
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try{
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return channel.sendTransactionProposal(transactionProposalRequest);
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}catch (Exception e){
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e.printStackTrace();
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return null;
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}
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}
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//Wrapper for channel.sendTransaction
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public BlockEvent.TransactionEvent sendTransaction(Collection<ProposalResponse> proposalResponses){
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Logger logger = Logger.getLogger(ChannelClientWrapper.class);
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BasicConfigurator.configure();
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try{
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List<ProposalResponse> invalid = proposalResponses.stream().filter(r -> r.isInvalid()).collect(Collectors.toList());
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if (!invalid.isEmpty()) {
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invalid.forEach(response -> {
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logger.error(response.getMessage());
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});
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}
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return channel.sendTransaction(proposalResponses).get();
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}catch (Exception e){
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e.printStackTrace();
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return null;
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}
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}
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} |