我正在尝试使用Java客户端调用Hyperledger fabcar的现有示例（利用java sdk集成）。我在我的一个AWS实例上设置了Fabric，并按原样运行所有内容。但是，当我执行我的程序并且它到达Channel.initialize()时，它会抛出异常
2017年9月12日上午8:57:08 org.hyperledger.fabric.sdk.Channel getConfigurationBlock SEVERE：通道mychannel sendDeliver时间 超过orderer orderer.example.com，超时时间为3000 org.hyperledger.fabric.sdk.exception.TransactionException：Channel orderer orderer.example.com超出mychannel sendDeliver时间， 超时3000 在org.hyperledger.fabric.sdk.OrdererClient.sendDeliver（OrdererClient.java:282） 在org.hyperledger.fabric.sdk.Orderer.sendDeliver（Orderer.java:172） 在org.hyperledger.fabric.sdk.Channel.seekBlock（Channel.java:1220） 在org.hyperledger.fabric.sdk.Channel.getLatestBlock（Channel.java:1296） 在org.hyperledger.fabric.sdk.Channel.getLastConfigIndex（Channel.java:1119） at org.hyperledger.fabric.sdk.Channel.getConfigurationBlock（Channel.java:1046） 在org.hyperledger.fabric.sdk.Channel.parseConfigBlock（Channel.java:967） 在org.hyperledger.fabric.sdk.Channel.initialize（Channel.java:694） 在Client.main（Client.java:73）
2017年9月12日上午8:57:08 org.hyperledger.fabric.sdk.Channel parseConfigBlock SEVERE：超出频道mychannel sendDeliver时间 对于orderer orderer.example.com，超时时间为3000 org.hyperledger.fabric.sdk.exception.TransactionException：Channel orderer orderer.example.com超出mychannel sendDeliver时间， 超时3000 在org.hyperledger.fabric.sdk.OrdererClient.sendDeliver（OrdererClient.java:282） 在org.hyperledger.fabric.sdk.Orderer.sendDeliver（Orderer.java:172） 在org.hyperledger.fabric.sdk.Channel.seekBlock（Channel.java:1220） 在org.hyperledger.fabric.sdk.Channel.getLatestBlock（Channel.java:1296） 在org.hyperledger.fabric.sdk.Channel.getLastConfigIndex（Channel.java:1119） at org.hyperledger.fabric.sdk.Channel.getConfigurationBlock（Channel.java:1046） 在org.hyperledger.fabric.sdk.Channel.parseConfigBlock（Channel.java:967） 在org.hyperledger.fabric.sdk.Channel.initialize（Channel.java:694） 在Client.main（Client.java:73）
2017年9月12日上午8:57:08 org.hyperledger.fabric.sdk.Channel初始化 严重：为orderer超出了频道mychannel sendDeliver时间 orderer.example.com，时间为3000 org.hyperledger.fabric.sdk.exception.TransactionException：Channel orderer orderer.example.com超出mychannel sendDeliver时间， 超时3000 在org.hyperledger.fabric.sdk.OrdererClient.sendDeliver（OrdererClient.java:282） 在org.hyperledger.fabric.sdk.Orderer.sendDeliver（Orderer.java:172） 在org.hyperledger.fabric.sdk.Channel.seekBlock（Channel.java:1220） 在org.hyperledger.fabric.sdk.Channel.getLatestBlock（Channel.java:1296） 在org.hyperledger.fabric.sdk.Channel.getLastConfigIndex（Channel.java:1119） at org.hyperledger.fabric.sdk.Channel.getConfigurationBlock（Channel.java:1046） 在org.hyperledger.fabric.sdk.Channel.parseConfigBlock（Channel.java:967） 在org.hyperledger.fabric.sdk.Channel.initialize（Channel.java:694） 在Client.main（Client.java:73）
编辑1：在Ubuntu 16.04上运行相同的问题。在channel.initialize();我得到：
线程中的异常＆＃34; main＆＃34; org.hyperledger.fabric.sdk.exception.TransactionException：Channel orderer orderer超出mychannel sendDeliver时间，超时时间 3000点 org.hyperledger.fabric.sdk.OrdererClient.sendDeliver（OrdererClient.java:282） 在org.hyperledger.fabric.sdk.Orderer.sendDeliver（Orderer.java:172） 在org.hyperledger.fabric.sdk.Channel.seekBlock（Channel.java:1198） 在 org.hyperledger.fabric.sdk.Channel.getLatestBlock（Channel.java:1274） 在 org.hyperledger.fabric.sdk.Channel.getLastConfigIndex（Channel.java:1097） 在 org.hyperledger.fabric.sdk.Channel.getConfigurationBlock（Channel.java:1028） 在 org.hyperledger.fabric.sdk.Channel.parseConfigBlock（Channel.java:949） 在org.hyperledger.fabric.sdk.Channel.initialize（Channel.java:676） 在com.test.test.Program.main（Program.java:65）
以下是示例代码：
package com.test.test;
import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.security.GeneralSecurityException;
import java.security.KeyFactory;
import java.security.PrivateKey;
import java.security.spec.PKCS8EncodedKeySpec;
import java.util.Collection;
import java.util.Date;
import java.util.HashSet;
import java.util.Random;
import java.util.Set;
import javax.xml.bind.DatatypeConverter;
import org.hyperledger.fabric.sdk.ChaincodeID;
import org.hyperledger.fabric.sdk.Channel;
import org.hyperledger.fabric.sdk.Enrollment;
import org.hyperledger.fabric.sdk.HFClient;
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.security.CryptoSuite;
public class Program {
private static HFClient client = null;
public static void main(String[] args) throws Throwable {
/*
* wallet_path: path.join(__dirname, './creds'), user_id: 'PeerAdmin',
* channel_id: 'mychannel', chaincode_id: 'fabcar', network_url:
* 'grpc://192.168.99.100:7051', orderer: grpc://192.168.99.100:7050
*
*/
// just new objects, without any payload inside
client = HFClient.createNewInstance();
CryptoSuite cs = CryptoSuite.Factory.getCryptoSuite();
client.setCryptoSuite(cs);
// We implement User interface below in code
// folder c:\tmp\creds should contain PeerAdmin.cert (extracted from HF's fabcar
// example's PeerAdmin json file)
// and PeerAdmin.priv (copy from
// cd96d5260ad4757551ed4a5a991e62130f8008a0bf996e4e4b84cd097a747fec-priv)
User user = new SampleUser("/home/brankoterzic/Desktop/HyperledgerFabric/fabric-samples/fabric-samples/fabcar/creds", "PeerAdmin");
// "Log in"
client.setUserContext(user);
// Instantiate channel
Channel channel = client.newChannel("mychannel");
channel.addPeer(client.newPeer("peer", "grpc://192.168.99.100:7051"));
// It always wants orderer, otherwise even query does not work
channel.addOrderer(client.newOrderer("orderer", "grpc://192.168.99.100:7050"));
channel.initialize();
// below is querying and setting new owner
String newOwner = "New Owner #" + new Random(new Date().getTime()).nextInt(999);
System.out.println("New owner is '" + newOwner + "'\n");
queryFabcar(channel, "CAR1");
updateCarOwner(channel, "CAR1", newOwner, false);
System.out.println("after request for transaction without commit");
queryFabcar(channel, "CAR1");
updateCarOwner(channel, "CAR1", newOwner, true);
System.out.println("after request for transaction WITH commit");
queryFabcar(channel, "CAR1");
System.out.println("Sleeping 5s");
Thread.sleep(5000); // 5secs
queryFabcar(channel, "CAR1");
System.out.println("all done");
}
private static void queryFabcar(Channel channel, String key) throws Exception {
QueryByChaincodeRequest req = client.newQueryProposalRequest();
ChaincodeID cid = ChaincodeID.newBuilder().setName("fabcar").build();
req.setChaincodeID(cid);
req.setFcn("queryCar");
req.setArgs(new String[] { key });
System.out.println("Querying for " + key);
Collection<ProposalResponse> resps = channel.queryByChaincode(req);
for (ProposalResponse resp : resps) {
String payload = new String(resp.getChaincodeActionResponsePayload());
System.out.println("response: " + payload);
}
}
private static void updateCarOwner(Channel channel, String key, String newOwner, Boolean doCommit)
throws Exception {
TransactionProposalRequest req = client.newTransactionProposalRequest();
ChaincodeID cid = ChaincodeID.newBuilder().setName("fabcar").build();
req.setChaincodeID(cid);
req.setFcn("changeCarOwner");
req.setArgs(new String[] { key, newOwner });
System.out.println("Executing for " + key);
Collection<ProposalResponse> resps = channel.sendTransactionProposal(req);
if (doCommit) {
channel.sendTransaction(resps);
}
}
}
/***
* Implementation of user. main business logic (as for fabcar example) is in
* getEnrollment - get user's private key and cert
*
*/
class SampleUser implements User {
private final String certFolder;
private final String userName;
public SampleUser(String certFolder, String userName) {
this.certFolder = certFolder;
this.userName = userName;
}
@Override
public String getName() {
return userName;
}
@Override
public Set<String> getRoles() {
return new HashSet<String>();
}
@Override
public String getAccount() {
return "";
}
@Override
public String getAffiliation() {
return "";
}
@Override
public Enrollment getEnrollment() {
return new Enrollment() {
@Override
public PrivateKey getKey() {
try {
return loadPrivateKey(Paths.get(certFolder, userName + ".priv"));
} catch (Exception e) {
return null;
}
}
@Override
public String getCert() {
try {
return new String(Files.readAllBytes(Paths.get(certFolder, userName + ".cert")));
} catch (Exception e) {
return "";
}
}
};
}
@Override
public String getMspId() {
return "Org1MSP";
}
/***
* loading private key from .pem-formatted file, ECDSA algorithm
* (from some example on StackOverflow, slightly changed)
* @param fileName - file with the key
* @return Private Key usable
* @throws IOException
* @throws GeneralSecurityException
*/
public static PrivateKey loadPrivateKey(Path fileName) throws IOException, GeneralSecurityException {
PrivateKey key = null;
InputStream is = null;
try {
is = new FileInputStream(fileName.toString());
BufferedReader br = new BufferedReader(new InputStreamReader(is));
StringBuilder builder = new StringBuilder();
boolean inKey = false;
for (String line = br.readLine(); line != null; line = br.readLine()) {
if (!inKey) {
if (line.startsWith("-----BEGIN ") && line.endsWith(" PRIVATE KEY-----")) {
inKey = true;
}
continue;
} else {
if (line.startsWith("-----END ") && line.endsWith(" PRIVATE KEY-----")) {
inKey = false;
break;
}
builder.append(line);
}
}
//
byte[] encoded = DatatypeConverter.parseBase64Binary(builder.toString());
PKCS8EncodedKeySpec keySpec = new PKCS8EncodedKeySpec(encoded);
KeyFactory kf = KeyFactory.getInstance("ECDSA");
key = kf.generatePrivate(keySpec);
} finally {
is.close();
}
return key;
}
}
答案 0 :(得分：0)
如果有任何问题，需要检查Orderer日志。您可能需要延长超时时间。在创建Orderer时添加属性＆＃34; ordererWaitTimeMilliSecs＆＃34;以毫秒为单位＆＃34; 10000＆＃34; 10秒钟。