Fabric Java SDK demo

https://github.com/kengker/fabrictest.git
基于这个Fabric网络环境进行的测试

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.Reader;
import java.io.Serializable;
import java.io.StringReader;
import java.lang.reflect.InvocationTargetException;
import java.net.MalformedURLException;
import java.security.PrivateKey;
import java.security.Security;
import java.util.Collection;
import java.util.LinkedList;
import java.util.List;
import java.util.Set;
import java.util.concurrent.CompletableFuture;

import org.apache.commons.io.IOUtils;
import org.bouncycastle.asn1.pkcs.PrivateKeyInfo;
import org.bouncycastle.jce.provider.BouncyCastleProvider;
import org.bouncycastle.openssl.PEMParser;
import org.bouncycastle.openssl.jcajce.JcaPEMKeyConverter;
import org.hyperledger.fabric.protos.peer.Query.ChaincodeInfo;
import org.hyperledger.fabric.sdk.BlockEvent;
import org.hyperledger.fabric.sdk.BlockchainInfo;
import org.hyperledger.fabric.sdk.ChaincodeID;
import org.hyperledger.fabric.sdk.ChaincodeResponse.Status;
import org.hyperledger.fabric.sdk.Channel;
import org.hyperledger.fabric.sdk.Enrollment;
import org.hyperledger.fabric.sdk.HFClient;
import org.hyperledger.fabric.sdk.Orderer;
import org.hyperledger.fabric.sdk.Peer;
import org.hyperledger.fabric.sdk.ProposalResponse;
import org.hyperledger.fabric.sdk.QueryByChaincodeRequest;
import org.hyperledger.fabric.sdk.TransactionProposalRequest;
import org.hyperledger.fabric.sdk.User;
import org.hyperledger.fabric.sdk.exception.CryptoException;
import org.hyperledger.fabric.sdk.exception.InvalidArgumentException;
import org.hyperledger.fabric.sdk.exception.ProposalException;
import org.hyperledger.fabric.sdk.security.CryptoSuite;
import org.hyperledger.fabric_ca.sdk.exception.EnrollmentException;

public class BYFNTest {

    static {
        Security.addProvider(new org.bouncycastle.jce.provider.BouncyCastleProvider());
    }
    
    public static void main(String[] args) throws EnrollmentException, org.hyperledger.fabric_ca.sdk.exception.InvalidArgumentException, MalformedURLException {
        try {
            HFClient hfclient = HFClient.createNewInstance();
            CryptoSuite cryptoSuite = CryptoSuite.Factory.getCryptoSuite();
            hfclient.setCryptoSuite(cryptoSuite);
            //设置用户,name任意
            User user = getFabricUser4Local("user","org1","Org1MSP");
            hfclient.setUserContext(user);
            
            //创建通道的客户端代理
            Channel channel = hfclient.newChannel("mychannel");
            //
            Orderer orderer = hfclient.newOrderer("orderer", "grpc://9.12.248.90:7050");
            channel.addOrderer(orderer);
            
            Peer peer = hfclient.newPeer("peer0", "grpc://9.12.248.90:7051");
            channel.addPeer(peer);//添加背书节点
            try {
                channel.initialize();
            }catch (Exception e) {
                e.printStackTrace();
                System.exit(0);
            }
            
            //获取当前peer加入的某个channel的区块数
            BlockchainInfo blockchainInfo = channel.queryBlockchainInfo(peer);
            System.out.println("the current ledger blocks height:"+blockchainInfo.getHeight() + " ");
            
            //获取当前peer加入了哪些channel
            System.out.println("获取当前peer加入了哪些channel:");
            Set<String> peerChannels = hfclient.queryChannels(peer);
            peerChannels.forEach(System.out::println);
            
            //获取当前peer服务器中状态为Install的chaincode的信息
            System.out.println("获取当前peer服务器中状态为Install的chaincode的信息:");
            List<ChaincodeInfo> installccs = hfclient.queryInstalledChaincodes(peer);
            installccs.forEach(cc -> System.out.println(cc.getPath()));
            //根据当前peer加入的某个channel中状态为instantiate的chaincode的详细信息
            List<ChaincodeInfo> instantiatedChaincodes = channel.queryInstantiatedChaincodes(peer);
            instantiatedChaincodes.forEach(cc -> System.out.println(cc.getPath()));         
            
            //调用chaincode的query方法
            ChaincodeID ccId = ChaincodeID.newBuilder().setName("mycc").build();
            QueryByChaincodeRequest queryByChaincodeRequest = hfclient.newQueryProposalRequest();
            queryByChaincodeRequest.setArgs(new String[] {"a"});
            queryByChaincodeRequest.setFcn("query");
            queryByChaincodeRequest.setChaincodeID(ccId);
            Collection<ProposalResponse> queryProposals = channel.queryByChaincode(queryByChaincodeRequest);
            for(ProposalResponse pr : queryProposals) {
                if(!pr.isVerified() || pr.getStatus() != Status.SUCCESS) {
                    System.out.println("Failed query proposal from peer!");
                }else {
                    String payload = pr.getProposalResponse().getResponse().getPayload().toStringUtf8();
                    System.out.println("Query a success : "+ payload);
                }
            }
            
            queryByChaincodeRequest = hfclient.newQueryProposalRequest();
            queryByChaincodeRequest.setArgs(new String[] {"b"});
            queryByChaincodeRequest.setFcn("query");
            queryByChaincodeRequest.setChaincodeID(ccId);
            queryProposals = channel.queryByChaincode(queryByChaincodeRequest);
            for(ProposalResponse pr : queryProposals) {
                if(!pr.isVerified() || pr.getStatus() != Status.SUCCESS) {
                    System.out.println("Failed query proposal from peer!");
                }else {
                    String payload = pr.getProposalResponse().getResponse().getPayload().toStringUtf8();
                    System.out.println("Query b success : "+ payload);
                }
            }
            
            sendTranstion(hfclient, channel, ccId, user);
            
        } catch (IllegalAccessException | InstantiationException | ClassNotFoundException | CryptoException
                | InvalidArgumentException | NoSuchMethodException | InvocationTargetException e) {
            e.printStackTrace();
        } catch (ProposalException e) {
            e.printStackTrace();
        }
    }
    //调用已经部署的chaincode的invoke方法
    private static CompletableFuture<BlockEvent.TransactionEvent> sendTranstion(HFClient client, Channel channel, ChaincodeID ccID, User user) throws ProposalException, InvalidArgumentException{
        Collection<ProposalResponse> successful = new LinkedList<>();
        TransactionProposalRequest transactionProposalRequest = client.newTransactionProposalRequest();
        transactionProposalRequest.setChaincodeID(ccID);
        transactionProposalRequest.setFcn("invoke");
        transactionProposalRequest.setArgs(new String[] {"a","b","1"});
        transactionProposalRequest.setProposalWaitTime(300000);
        transactionProposalRequest.setUserContext(user);
        Collection<ProposalResponse> invokePropResp = channel.sendTransactionProposal(transactionProposalRequest);
        for(ProposalResponse pr : invokePropResp) {
            if(pr.getStatus() == Status.SUCCESS) {
                System.out.printf("successful transaction proposal response Txid : %s from peer: %s", pr.getTransactionID(), pr.getPeer().getName());
                successful.add(pr);
            }else {
                System.out.printf("fail %s", "ddd");
            }
        }
        System.out.println();
        return channel.sendTransaction(successful,user);
    }

    /**
     * 根据cryptogen模块生成的账号创建fabric账号
     * @param username
     * @param org
     * @param orgId
     * @return
     */
    private static User getFabricUser4Local(String username, String org, String orgId) {
        FabricUserImpl user = new FabricUserImpl(username, org);
        user.setMspId(orgId);
        
        try {
            String certificate = new String(IOUtils.toByteArray(new FileInputStream("E:\\fabric_certs\\byfn_admin.pem")));//将生成的fabricTest/crypto-config/peerOrganizations/org1.example.com/peers/peer0.org1.example.com/msp/admincerts/Admin@org1.example.com-cert.pem保存到本地的某个目录下
            File privateKeyFile = new File("E:\\fabric_certs\\byfn_sk");//将生成的fabricTest/crypto-config/peerOrganizations/org1.example.com/peers/peer0.org1.example.com/msp/keystore/****_sk文件保存到本地的某个目录下
            PrivateKey pk = getPrivateKeyFromBytes(IOUtils.toByteArray(new FileInputStream(privateKeyFile)));
            
            EnrollmentImpl enrollement = new EnrollmentImpl(pk, certificate);
            user.setEnrollment(enrollement);
        } catch (IOException e) {
            e.printStackTrace();
        }
        
        return user;
    }
    
    private static PrivateKey getPrivateKeyFromBytes(byte[] data) throws IOException {
        final Reader pemReader = new StringReader(new String(data));
        final PrivateKeyInfo pemPair;
        PEMParser pemParse = new PEMParser(pemReader);
        pemPair = (PrivateKeyInfo) pemParse.readObject();
        PrivateKey pk = new JcaPEMKeyConverter().setProvider(BouncyCastleProvider.PROVIDER_NAME).getPrivateKey(pemPair);
        pemParse.close();
        return pk;
    }

    static final class EnrollmentImpl implements Enrollment, Serializable{
        
        private static final long serialVersionUID = 1L;
        private final PrivateKey privateKey;
        private final String certificate;
        
        public EnrollmentImpl(PrivateKey pk, String c) {
            this.privateKey = pk;
            this.certificate = c;
        }

        @Override
        public PrivateKey getKey() {
            return privateKey;
        }

        @Override
        public String getCert() {
            return certificate;
        }
        
    }
    
    static final class FabricUserImpl implements User,Serializable{
        
        private static final long serialVersionUID = 1L;
        private String name;
        private Set<String> roles;
        private String account;
        private String affiliation;
        private String organization;
        private String enrollmentSecret;
        Enrollment enrollment = null;
        public FabricUserImpl(String name, String org) {
            this.name = name;
            this.organization = org;
        }
        @Override
        public String getName() {
            return this.name;
        }

        @Override
        public Set<String> getRoles() {
            return this.roles;
        }
        
        public void setRoles(Set<String> roles) {
            this.roles = roles;
        }

        @Override
        public String getAccount() {
            return this.account;
        }
        
        public void setAccount(String account) {
            this.account = account;
        }

        @Override
        public String getAffiliation() {
            return this.affiliation;
        }
        public void setAffiliation(String af) {
            this.affiliation = af;
        }

        @Override
        public Enrollment getEnrollment() {
            return this.enrollment;
        }
        
        public boolean isEnrolled() {
            return this.enrollment != null;
        }
        
        public String getEnrollmentSecret() {
            return this.enrollmentSecret;
        }
        
        public void setEnrollmentSecret(String es) {
            this.enrollmentSecret = es;
        }
        
        public void setEnrollment(Enrollment e) {
            this.enrollment = e;
        }
        String mspId;
        @Override
        public String getMspId() {
            return this.mspId;
        }
        public void setMspId(String mspId) {
            this.mspId = mspId;
        }       
    }
}