/*Copyright IBM Corp. 2016 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-2.0Unless required by applicable law or agreed to in writing, softwaredistributed 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 andlimitations under the License.*/package main//WARNING - this chaincode's ID is hard-coded in chaincode_example04 to illustrate one way of//calling chaincode from a chaincode. If this example is modified, chaincode_example04.go has//to be modified as well with the new ID of chaincode_example02.//chaincode_example05 show's how chaincode ID can be passed in as a parameter instead of//hard-coding.import ( "fmt" "strconv" "github.com/hyperledger/fabric/core/chaincode/shim" pb "github.com/hyperledger/fabric/protos/peer")// SimpleChaincode example simple Chaincode implementationtype SimpleChaincode struct {}func (t *SimpleChaincode) Init(stub shim.ChaincodeStubInterface) pb.Response { fmt.Println("ex02 Init") _, args := stub.GetFunctionAndParameters() var A, B string // Entities var Aval, Bval int // Asset holdings var err error if len(args) != 4 { return shim.Error("Incorrect number of arguments. Expecting 4") } // Initialize the chaincode A = args[0] Aval, err = strconv.Atoi(args[1]) if err != nil { return shim.Error("Expecting integer value for asset holding") } B = args[2] Bval, err = strconv.Atoi(args[3]) if err != nil { return shim.Error("Expecting integer value for asset holding") } fmt.Printf("Aval = %d, Bval = %d\n", Aval, Bval) // Write the state to the ledger err = stub.PutState(A, []byte(strconv.Itoa(Aval))) if err != nil { return shim.Error(err.Error()) } err = stub.PutState(B, []byte(strconv.Itoa(Bval))) if err != nil { return shim.Error(err.Error()) } return shim.Success(nil)}func (t *SimpleChaincode) Invoke(stub shim.ChaincodeStubInterface) pb.Response { fmt.Println("ex02 Invoke") function, args := stub.GetFunctionAndParameters() if function == "invoke" { // Make payment of X units from A to B return t.invoke(stub, args) } else if function == "delete" { // Deletes an entity from its state return t.delete(stub, args) } else if function == "query" { // the old "Query" is now implemtned in invoke return t.query(stub, args) } return shim.Error("Invalid invoke function name. Expecting \"invoke\" \"delete\" \"query\"")}// Transaction makes payment of X units from A to Bfunc (t *SimpleChaincode) invoke(stub shim.ChaincodeStubInterface, args []string) pb.Response { var A, B string // Entities var Aval, Bval int // Asset holdings var X int // Transaction value var err error if len(args) != 3 { return shim.Error("Incorrect number of arguments. Expecting 3") } A = args[0] B = args[1] // Get the state from the ledger // TODO: will be nice to have a GetAllState call to ledger Avalbytes, err := stub.GetState(A) if err != nil { return shim.Error("Failed to get state") } if Avalbytes == nil { return shim.Error("Entity not found") } Aval, _ = strconv.Atoi(string(Avalbytes)) Bvalbytes, err := stub.GetState(B) if err != nil { return shim.Error("Failed to get state") } if Bvalbytes == nil { return shim.Error("Entity not found") } Bval, _ = strconv.Atoi(string(Bvalbytes)) // Perform the execution X, err = strconv.Atoi(args[2]) if err != nil { return shim.Error("Invalid transaction amount, expecting a integer value") } Aval = Aval - X Bval = Bval + X fmt.Printf("Aval = %d, Bval = %d\n", Aval, Bval) // Write the state back to the ledger err = stub.PutState(A, []byte(strconv.Itoa(Aval))) if err != nil { return shim.Error(err.Error()) } err = stub.PutState(B, []byte(strconv.Itoa(Bval))) if err != nil { return shim.Error(err.Error()) } return shim.Success(nil)}// Deletes an entity from statefunc (t *SimpleChaincode) delete(stub shim.ChaincodeStubInterface, args []string) pb.Response { if len(args) != 1 { return shim.Error("Incorrect number of arguments. Expecting 1") } A := args[0] // Delete the key from the state in ledger err := stub.DelState(A) if err != nil { return shim.Error("Failed to delete state") } return shim.Success(nil)}// query callback representing the query of a chaincodefunc (t *SimpleChaincode) query(stub shim.ChaincodeStubInterface, args []string) pb.Response { var A string // Entities var err error if len(args) != 1 { return shim.Error("Incorrect number of arguments. Expecting name of the person to query") } A = args[0] // Get the state from the ledger Avalbytes, err := stub.GetState(A) if err != nil { jsonResp := "{\"Error\":\"Failed to get state for " + A + "\"}" return shim.Error(jsonResp) } if Avalbytes == nil { jsonResp := "{\"Error\":\"Nil amount for " + A + "\"}" return shim.Error(jsonResp) } jsonResp := "{\"Name\":\"" + A + "\",\"Amount\":\"" + string(Avalbytes) + "\"}" fmt.Printf("Query Response:%s\n", jsonResp) return shim.Success(Avalbytes)}func main() { err := shim.Start(new(SimpleChaincode)) if err != nil { fmt.Printf("Error starting Simple chaincode: %s", err) }}
package cn.netkiller.fabric;import org.apache.commons.io.IOUtils;import org.bouncycastle.asn1.pkcs.PrivateKeyInfo;import org.bouncycastle.openssl.PEMParser;import org.bouncycastle.openssl.jcajce.JcaPEMKeyConverter;import org.hyperledger.fabric.sdk.*;import org.hyperledger.fabric.sdk.NetworkConfig.OrgInfo;import org.hyperledger.fabric.sdk.exception.InvalidArgumentException;import org.hyperledger.fabric.sdk.security.CryptoSuite;import org.slf4j.Logger;import org.slf4j.LoggerFactory;import org.yaml.snakeyaml.Yaml;import java.io.File;import java.io.FileInputStream;import java.io.FileNotFoundException;import java.io.IOException;import java.io.InputStream;import java.io.Reader;import java.io.StringReader;import java.security.PrivateKey;import java.util.*;import java.util.concurrent.TimeUnit;import javax.json.Json;import javax.json.JsonObject;import javax.json.JsonValue;import static java.nio.charset.StandardCharsets.UTF_8;public class FabricHelper { private Logger logger = LoggerFactory.getLogger(FabricHelper.class); private String ymlFileName = "./huawei.yaml"; private String channelName; private String chaincodeName; private String accessKey; private Map clientMap; private Map channelMap; private FabricHelper() { channelMap = new HashMap<>(); clientMap = new HashMap<>(); } private static class Holder { private static FabricHelper instance = new FabricHelper(); } public static FabricHelper getInstance(){ return Holder.instance; } public void setConfigCtx(String configPath) { if (configPath == null || configPath.equals("")) { logger.error("config path is empty! please input correct ymal path!"); } this.ymlFileName = configPath; try { InputStream stream = new FileInputStream(new File(this.ymlFileName)); Yaml yaml = new Yaml(); Map confYaml = yaml.load(stream); JsonObject confJson = Json.createObjectBuilder(confYaml).build(); this.accessKey = confJson.getJsonObject("client").getString("organization"); JsonObject channels = confJson.getJsonObject("channels"); //因为只有一个channel 所以只需获取键名即可 String chanNameTemp = channels.keySet().toString(); this.channelName = chanNameTemp.substring(chanNameTemp.indexOf("[") + 1, chanNameTemp.indexOf("]")); // 因为只有一个chaincode 所以只需取chaincode数组的第一个 String codeNameTemp = channels.getJsonObject(this.channelName).getJsonArray("chaincodes").getString(0); this.chaincodeName = codeNameTemp.substring(0, codeNameTemp.indexOf(":")); } catch (Exception e) { e.printStackTrace(); logger.error(e.getMessage()); } } public FabricHelper setConfigPath(String configPath){ this.ymlFileName=configPath; return this; } public FabricHelper setChaincodeName(String chaincodeName) { this.chaincodeName=chaincodeName; return this; } public FabricHelper setChannelName(String channelName) { this.channelName=channelName; return this; } public FabricHelper setAccessKey(String accesskey) { this.accessKey=accesskey; return this; } private NetworkConfig loadfromYamlFile(String fileName) { try { return NetworkConfig.fromYamlFile(new File(fileName)); } catch (Exception e) { String msg = "can't load yaml file: " + fileName; logger.error(msg, e); return null; } } private Channel buildChannel(String channelName, NetworkConfig networkConfig, HFClient client) { try { FabricUser user = genFabricUser(accessKey); client.setUserContext(user); Channel channel = client.loadChannelFromConfig(channelName, networkConfig); channel.initialize(); return channel; } catch (Exception e) { String msg = "can't construct channel: " + networkConfig.getClientOrganization(); logger.error(msg, e); return null; } } private HFClient getClient(String orgName) { HFClient client = clientMap.get(orgName); if (client == null) { synchronized (clientMap) { client = clientMap.get(orgName); if (client != null) { return client; } client = HFClient.createNewInstance(); try { client.setCryptoSuite(getCryptoSuite()); clientMap.put(orgName, client); } catch (Exception e) { String msg = "can't construct client: " + orgName; logger.error(msg, e); System.out.println(msg); return null; } } } return client; } private CryptoSuite getCryptoSuite() throws java.lang.IllegalAccessException, java.lang.InstantiationException, java.lang.ClassNotFoundException, org.hyperledger.fabric.sdk.exception.CryptoException, org.hyperledger.fabric.sdk.exception.InvalidArgumentException, java.lang.NoSuchMethodException, java.lang.reflect.InvocationTargetException, FileNotFoundException{ CryptoSuite cs = null; InputStream stream = new FileInputStream(this.ymlFileName); Map map = new Yaml().load(stream); JsonObject root = Json.createObjectBuilder(map).build(); String hashAlgo =root.getJsonObject("client").getJsonObject("BCCSP").getJsonObject("security").getString("hashAlgorithm"); //for sm Algorithm if (hashAlgo.equals("SM3")){ Properties properties = new Properties(); properties.setProperty("org.hyperledger.fabric.sdk.hash_algorithm", "SM3"); properties.setProperty("org.hyperledger.fabric.sdk.crypto.default_signature_userid", "1234567812345678"); cs = CryptoSuite.Factory.getCryptoSuite(properties); }else{ cs = CryptoSuite.Factory.getCryptoSuite(); } return cs; } private Channel getChannel(String accessKey, HFClient client) { Channel channel = channelMap.get(accessKey); if (channel == null) { synchronized (channelMap) { channel = channelMap.get(accessKey); if (channel != null) { return channel; } NetworkConfig networkConfig = loadfromYamlFile(ymlFileName); if (networkConfig == null) { return null; } try { networkConfig.getOrdererNames().forEach(item -> { try { Properties p = networkConfig.getOrdererProperties(item); p.setProperty("hostnameOverride", item); p.setProperty("clientCertFile", GetTlsCert(ymlFileName, "ordererorg")); p.setProperty("clientKeyFile", GetTlsKey(ymlFileName, "ordererorg")); networkConfig.setOrdererProperties(item, p); } catch (InvalidArgumentException e) { throw new RuntimeException(e); } }); networkConfig.getPeerNames().forEach(item -> { try { Properties p = networkConfig.getPeerProperties(item); String orgId = getOrgIdByPeer(networkConfig,item); p.setProperty("hostnameOverride", item); p.setProperty("clientCertFile", GetTlsCert(ymlFileName, orgId)); p.setProperty("clientKeyFile", GetTlsKey(ymlFileName, orgId)); networkConfig.setPeerProperties(item, p); } catch (InvalidArgumentException e) { throw new RuntimeException(e); } }); networkConfig.getEventHubNames().forEach(item -> { try { Properties p = networkConfig.getEventHubsProperties(item); String orgId = getOrgIdByPeer(networkConfig,item); p.setProperty("hostnameOverride", item); p.setProperty("clientCertFile", GetTlsCert(ymlFileName, orgId)); p.setProperty("clientKeyFile", GetTlsKey(ymlFileName, orgId)); networkConfig.setEventHubProperties(item, p); } catch (InvalidArgumentException e) { throw new RuntimeException(e); } }); networkConfig.getChannelNames().forEach( item -> { if (channelName!="" ){ channelName = item; } }); } catch (Exception e) { String msg = "can't get channel: " + accessKey; logger.error(msg, e); return null; } channel = buildChannel(channelName, networkConfig, client); if (channel != null) { channelMap.put(accessKey, channel); } } } return channel; } private String getCryptoPath(String configFile, String orgId) { JsonObject root = null; try { InputStream stream = new FileInputStream(configFile); Yaml yaml = new Yaml(); Map map = yaml.load(stream); root = Json.createObjectBuilder(map).build(); } catch (FileNotFoundException e) { // TODO Auto-generated catch block e.printStackTrace(); } JsonObject orgs = root.getJsonObject("organizations"); for (Map.Entry o : orgs.entrySet()) { if (orgId.equals(o.getKey())) { JsonObject v = (JsonObject) o.getValue(); return v.getString("cryptoPath"); } } return ""; } private String GetTlsCert(String configFile, String orgId){ String msp = getCryptoPath(configFile, orgId); int index = msp.lastIndexOf("msp"); String ret = msp.substring(0, index)+"tls/server.crt"; logger.debug("tls cert for " + orgId +",path:"+ ret); return ret; } private String GetTlsKey(String configFile, String orgId){ String msp = getCryptoPath(configFile, orgId); int index = msp.lastIndexOf("msp"); String ret = msp.substring(0, index)+"tls/server.key"; logger.debug("tls key for " + orgId +",path:"+ ret); return ret; } private String getOrgIdByPeer(NetworkConfig config, String peerName){ for ( OrgInfo o : config.getOrganizationInfos()) { for (String p : o.getPeerNames()){ if ( p.equals(peerName) ){ return o.getName(); } } } return ""; } private FabricUser genFabricUser(String accessKey) { FabricUser user = new FabricUser(accessKey); String msp = getCryptoPath(this.ymlFileName, accessKey); String adminPrivateKeyString = extractPemString(msp,"keystore"); String signedCert = extractPemString(msp, "signcerts"); PrivateKey privateKey = null; try { privateKey = getPrivateKeyFromString(adminPrivateKeyString); } catch (IOException ioe) { ioe.printStackTrace(); } final PrivateKey privateKeyFinal = privateKey; user.setEnrollment(new Enrollment() { @Override public PrivateKey getKey() { return privateKeyFinal; } @Override public String getCert() { return signedCert; } }); return user; } private String extractPemString(String path, String sub){ String pemString = ""; File dir = new File(path + "/" + sub ); if (!dir.exists()){ logger.error("directory is not exist. path:" + dir); return ""; } for (File f : dir.listFiles()){ try { FileInputStream stream = new FileInputStream(f); pemString = IOUtils.toString(stream, "UTF-8"); return pemString; } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); } } return pemString; } private static PrivateKey getPrivateKeyFromString(String data) throws IOException { final Reader pemReader = new StringReader(data); final PrivateKeyInfo pemPair; try (PEMParser pemParser = new PEMParser(pemReader)) { pemPair = (PrivateKeyInfo) pemParser.readObject(); } return new JcaPEMKeyConverter().getPrivateKey(pemPair); } public boolean invokeBlockchain(String method, String[] args) { HFClient client = getClient(accessKey); if (client == null) { return false; } Channel channel = getChannel(accessKey, client); if (channel == null) { return false; } Collection successful = new LinkedList<>(); Collection failed = new LinkedList<>(); try { TransactionProposalRequest req = client.newTransactionProposalRequest(); ChaincodeID cid = ChaincodeID.newBuilder().setName(chaincodeName).build(); req.setChaincodeID(cid); req.setFcn(method); req.setArgs(args); Map tm2 = new HashMap<>(); tm2.put("HyperLedgerFabric", "TransactionProposalRequest:JavaSDK".getBytes(UTF_8)); tm2.put("method", "TransactionProposalRequest".getBytes(UTF_8)); tm2.put("result", ":)".getBytes(UTF_8)); /// This should be returned see chaincode. req.setTransientMap(tm2); Collection resps = channel.sendTransactionProposal(req); for (ProposalResponse response : resps) { if (response.getStatus() == ProposalResponse.Status.SUCCESS) { successful.add(response); } else { failed.add(response); } } // Check that all the proposals are consistent with each other. We should have only one set // where all the proposals above are consistent. Collection > proposalConsistencySets = SDKUtils.getProposalConsistencySets(resps); if (proposalConsistencySets.size() != 1) { logger.error("Expected only one set of consistent proposal responses but got {}: {}" + proposalConsistencySets.size(), args.toString()); return false; } if (failed.size() > 0) { ProposalResponse firstTransactionProposalResponse = failed.iterator().next(); logger.error("Not enough endorsers for {}: {}. endorser error: {}, Was verified: {}", args, failed.size(), firstTransactionProposalResponse.getMessage(), firstTransactionProposalResponse.isVerified()); return false; } BlockEvent.TransactionEvent transactionEvent = channel.sendTransaction(successful).get(30, TimeUnit.SECONDS); if (transactionEvent.isValid()) { logger.info("Finished transaction with transaction id {}: {}", transactionEvent.getTransactionID(), args); return true; } else { logger.error("can't commit result: {}", args.toString()); return false; } } catch (Exception e) { String msg = "can't put record to blockchain: " + args; logger.error(msg, e); return false; } } public String queryBlockchain(String method, String[] params) { HFClient client = getClient(accessKey); if (client == null) { return "{1}"; } Channel channel = getChannel(accessKey, client); if (channel == null) { return "{2}"; } try { QueryByChaincodeRequest queryByChaincodeRequest = client.newQueryProposalRequest(); queryByChaincodeRequest.setArgs(params); queryByChaincodeRequest.setFcn(method); queryByChaincodeRequest.setChaincodeID(ChaincodeID.newBuilder().setName(chaincodeName).build()); Map tm2 = new HashMap<>(); tm2.put("HyperLedgerFabric", "QueryByChaincodeRequest:JavaSDK".getBytes(UTF_8)); tm2.put("method", "QueryByChaincodeRequest".getBytes(UTF_8)); queryByChaincodeRequest.setTransientMap(tm2); String payload = null; Collection queryProposals = channel.queryByChaincode(queryByChaincodeRequest, channel.getPeers()); for (ProposalResponse proposalResponse : queryProposals) { if (!proposalResponse.isVerified() || proposalResponse.getStatus() != ProposalResponse.Status.SUCCESS) { logger.error("Failed query proposal from peer " + proposalResponse.getPeer().getName() + " status: " + proposalResponse.getStatus() + ". Messages: " + proposalResponse.getMessage() + ". Was verified : " + proposalResponse.isVerified()); } else { payload = proposalResponse.getProposalResponse().getResponse().getPayload().toStringUtf8(); logger.info("Query payload from peer {} returned {}", proposalResponse.getPeer().getName(), payload); break; } } return !payload.equals("null") ? payload : "{}"; } catch (Exception e) { String msg = "can't query record from blockchain. condition: " + accessKey + "," + params; logger.error(msg); return "{3}"; } }}
39.1.6.5. FabricUser.java
package cn.netkiller.fabric;import java.util.Set;import org.hyperledger.fabric.sdk.Enrollment;import org.hyperledger.fabric.sdk.User;public class FabricUser implements User { public void setName(String name) { this.name = name; } protected String name; protected String enrollSecret; protected String mspid; private Set roles; private String account; private String affiliation; private Enrollment enrollment; public void setEnrollSecret(String enrollSecret) { this.enrollSecret = enrollSecret; } public String getMspid() { return mspid; } public void setMspid(String mspid) { this.mspid = mspid; } public void setRoles(Set roles) { this.roles = roles; } public void setAccount(String account) { this.account = account; } public void setAffiliation(String affiliation) { this.affiliation = affiliation; } public void setEnrollment(Enrollment enrollment) { this.enrollment = enrollment; } public FabricUser(String accessKey) { this.name = accessKey; this.mspid = accessKey + "MSP"; } public String getEnrollSecret() { return enrollSecret; } @Override public String getName() { return name; } @Override public Set getRoles() { return roles; } @Override public String getAccount() { return account; } @Override public String getAffiliation() { return affiliation; } @Override public Enrollment getEnrollment() { return enrollment; } public String getMspId() { return mspid; }}
39.1.6.6. Main.java
package cn.netkiller.fabric;import org.slf4j.Logger;import org.slf4j.LoggerFactory;import java.util.concurrent.CountDownLatch;/** * run this main method and check result */public class Main { private static Logger logger = LoggerFactory.getLogger(Main.class); public static void main(String args[]) throws Exception { FabricHelper helper = FabricHelper.getInstance(); helper.setConfigCtx("/Users/neo/workspace/fabric-sdk-java/src/main/resources/fixture/config/bcs-whbsxu-sdk-config.yaml"); LoopInvoke(1); // StartMultiTask(1,1); } public static void LoopInvoke(int loop) throws Exception { FabricHelper helper = FabricHelper.getInstance(); for (int i = 0; i < loop; i++) { helper.invokeBlockchain("invoke", new String[] { "a", "b", "100" }); String a = helper.queryBlockchain("query", new String[] { "a" }); String b = helper.queryBlockchain("query", new String[] { "b" }); logger.info("after invoke a=" + a + ", invoke b=" + b); } } // StartMultiTask(1, 1); public static void StartMultiTask(int threadNumber, int loop) throws InterruptedException { final CountDownLatch countDownLatch = new CountDownLatch(threadNumber); for (int i = 0; i < threadNumber; i++) { final int threadID = i; new Thread() { public void run() { try { LoopInvoke(loop); } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); } logger.info("threadID:[%s] finished!!", threadID); countDownLatch.countDown(); } }.start(); } countDownLatch.await(); logger.info("main thread finished!!"); }}
39.1.6.7. 运行结果
2018-09-26 09:58:19,065 WARN [org.hyperledger.fabric.sdk.helper.Config] - Failed to load any configuration from: config.properties. Using toolkit defaults2018-09-26 09:58:24,254 INFO [cn.netkiller.fabric.FabricHelper] - Finished transaction with transaction id f969f5785acaeab87c8471190ece5231adb54575410293bdcd5f00d227eb24b7: [a, b, 100]2018-09-26 09:58:24,322 INFO [cn.netkiller.fabric.FabricHelper] - Query payload from peer peer-23e50b60552eb5b6f32d3c1563305dd4530dc2f0-0.peer-23e50b60552eb5b6f32d3c1563305dd4530dc2f0.default.svc.cluster.local returned -5002018-09-26 09:58:24,386 INFO [cn.netkiller.fabric.FabricHelper] - Query payload from peer peer-23e50b60552eb5b6f32d3c1563305dd4530dc2f0-0.peer-23e50b60552eb5b6f32d3c1563305dd4530dc2f0.default.svc.cluster.local returned 8002018-09-26 09:58:24,386 INFO [cn.netkiller.fabric.Main] - after invoke a=-500, invoke b=800
