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Java SDK for Hyperledger fabric project
/*
*
* 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.net.URI;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.Comparator;
import java.util.HashMap;
import java.util.HashSet;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import java.util.Objects;
import java.util.Properties;
import java.util.Random;
import java.util.Set;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.Executors;
import java.util.concurrent.ScheduledFuture;
import java.util.concurrent.TimeUnit;
import com.google.protobuf.ByteString;
import com.google.protobuf.InvalidProtocolBufferException;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.hyperledger.fabric.protos.discovery.Protocol;
import org.hyperledger.fabric.protos.gossip.Message;
import org.hyperledger.fabric.protos.msp.Identities;
import org.hyperledger.fabric.protos.msp.MspConfigPackage;
import org.hyperledger.fabric.sdk.Channel.ServiceDiscoveryChaincodeCalls;
import org.hyperledger.fabric.sdk.ServiceDiscovery.SDLayout.SDGroup;
import org.hyperledger.fabric.sdk.exception.InvalidProtocolBufferRuntimeException;
import org.hyperledger.fabric.sdk.exception.ServiceDiscoveryException;
import org.hyperledger.fabric.sdk.helper.Config;
import org.hyperledger.fabric.sdk.helper.DiagnosticFileDumper;
import org.hyperledger.fabric.sdk.transaction.TransactionContext;
import static java.lang.String.format;
import static org.hyperledger.fabric.sdk.helper.Utils.toHexString;
public class ServiceDiscovery {
private static final Log logger = LogFactory.getLog(ServiceDiscovery.class);
private static final boolean DEBUG = logger.isDebugEnabled();
private static final Config config = Config.getConfig();
private static final boolean IS_TRACE_LEVEL = logger.isTraceEnabled();
private static final DiagnosticFileDumper diagnosticFileDumper = IS_TRACE_LEVEL
? config.getDiagnosticFileDumper() : null;
private static final int SERVICE_DISCOVERY_WAITTIME = config.getServiceDiscoveryWaitTime();
private static final Random random = new Random();
private final Collection serviceDiscoveryPeers;
private final Channel channel;
private final TransactionContext transactionContext;
private final String channelName;
private volatile Map chaindcodeMap = new HashMap<>();
private static final boolean asLocalhost = config.discoverAsLocalhost();
ServiceDiscovery(Channel channel, Collection serviceDiscoveryPeers, TransactionContext transactionContext) {
this.serviceDiscoveryPeers = serviceDiscoveryPeers;
this.channel = channel;
this.channelName = channel.getName();
this.transactionContext = transactionContext.retryTransactionSameContext();
}
SDChaindcode discoverEndorserEndpoint(TransactionContext transactionContext, final String name) throws ServiceDiscoveryException {
Map lchaindcodeMap = chaindcodeMap;
if (lchaindcodeMap != null) { // check if we have it already.
SDChaindcode sdChaindcode = lchaindcodeMap.get(name);
if (null != sdChaindcode) {
return sdChaindcode;
}
}
final ServiceDiscoveryChaincodeCalls serviceDiscoveryChaincodeCalls = new ServiceDiscoveryChaincodeCalls(name);
LinkedList cc = new LinkedList<>();
cc.add(serviceDiscoveryChaincodeCalls);
List> ccl = new LinkedList<>();
ccl.add(cc);
Map dchaindcodeMap = discoverEndorserEndpoints(transactionContext, ccl);
final SDChaindcode sdChaindcode = dchaindcodeMap.get(name);
if (null == sdChaindcode) {
throw new ServiceDiscoveryException(format("Failed to find any endorsers for chaincode %s. See logs for details", name));
}
return sdChaindcode;
}
Collection getDiscoveredChaincodeNames() {
final SDNetwork lsdNetwork = fullNetworkDiscovery(false);
if (null == lsdNetwork) {
return Collections.emptyList();
}
return new ArrayList<>(lsdNetwork.getChaincodesNames());
}
class SDNetwork {
final Map> tlsCerts = new HashMap<>();
final Map> tlsIntermCerts = new HashMap<>();
long discoveryTime;
void addTlsCert(String mspid, byte[] cert) {
if (IS_TRACE_LEVEL) {
logger.trace(format("Channel %s service discovery MSPID %s adding TLSCert %s", channelName, mspid, toHexString(cert)));
}
tlsCerts.computeIfAbsent(mspid, k -> new LinkedList<>()).add(cert);
}
void addTlsIntermCert(String mspid, byte[] cert) {
if (IS_TRACE_LEVEL) {
logger.trace(format("Channel %s service discovery MSPID %s adding intermediate TLSCert %s", channelName, mspid, toHexString(cert)));
}
tlsIntermCerts.computeIfAbsent(mspid, k -> new LinkedList<>()).add(cert);
}
SDEndorser getEndorserByEndpoint(String endpoint) {
return endorsers.get(endpoint);
}
public Collection getEndorsers() {
return Collections.unmodifiableCollection(endorsers.values());
}
Map endorsers = Collections.emptyMap();
Map ordererEndpoints = Collections.emptyMap();
Set getOrdererEndpoints() {
return Collections.unmodifiableSet(ordererEndpoints.keySet());
}
Collection getSDOrderers() {
return ordererEndpoints.values();
}
Set getPeerEndpoints() {
return Collections.unmodifiableSet(endorsers.keySet());
}
Set chaincodeNames = null;
Set getChaincodesNames() {
if (null == chaincodeNames) {
if (null == endorsers) {
chaincodeNames = Collections.emptySet();
return chaincodeNames;
}
Set ret = new HashSet<>();
endorsers.values().forEach(sdEndorser -> {
if (null != sdEndorser.chaincodesList) {
sdEndorser.chaincodesList.forEach(chaincode -> ret.add(chaincode.getName()));
}
});
chaincodeNames = ret;
}
return chaincodeNames;
}
Collection getTlsCerts(final String mspid) {
final Collection bytes = tlsCerts.get(mspid);
if (null == bytes) {
logger.debug(format("Channel %s no tls ca certs for mspid: %s", channelName, mspid));
return Collections.emptyList();
}
if (bytes.isEmpty()) {
logger.debug(format("Channel %s no tls ca certs for mspid: %s", channelName, mspid));
}
return Collections.unmodifiableCollection(bytes);
}
Collection getTlsIntermediateCerts(String mspid) {
final Collection bytes = tlsIntermCerts.get(mspid);
if (null == bytes) {
logger.debug(format("Channel %s no tls intermediary ca certs for mspid: %s", channelName, mspid));
return Collections.emptyList();
}
if (bytes.isEmpty()) {
logger.debug(format("Channel %s no tls intermediary ca certs for mspid: %s", channelName, mspid));
}
return Collections.unmodifiableCollection(bytes);
}
}
private volatile SDNetwork sdNetwork = null;
private final Set certs = ConcurrentHashMap.newKeySet();
SDNetwork networkDiscovery(TransactionContext ltransactionContext, boolean force) {
logger.trace(format("Network discovery force: %b", force));
ArrayList speers = new ArrayList<>(serviceDiscoveryPeers);
Collections.shuffle(speers);
SDNetwork ret = sdNetwork;
if (!force && null != ret && ret.discoveryTime + SERVICE_DISCOVER_FREQ_SECONDS * 1000 > System.currentTimeMillis()) {
return ret;
}
ret = null;
for (final Peer serviceDiscoveryPeer : speers) {
try {
URI serviceDiscoveryPeerURI = URI.create(serviceDiscoveryPeer.getUrl());
boolean isTLS = serviceDiscoveryPeerURI.getScheme().equals("grpcs");
logger.trace(format("Service discovery peer %s using TLS: %b", serviceDiscoveryPeerURI.toString(), isTLS));
SDNetwork lsdNetwork = new SDNetwork();
final byte[] clientTLSCertificateDigest = serviceDiscoveryPeer.getClientTLSCertificateDigest();
logger.info(format("Channel %s doing discovery with peer: %s", channelName, serviceDiscoveryPeer.toString()));
if (null == clientTLSCertificateDigest) {
throw new RuntimeException(format("Channel %s, peer %s requires mutual tls for service discovery.", channelName, serviceDiscoveryPeer));
}
ByteString clientIdent = ltransactionContext.getIdentity().toByteString();
ByteString tlshash = ByteString.copyFrom(clientTLSCertificateDigest);
Protocol.AuthInfo authentication = Protocol.AuthInfo.newBuilder().setClientIdentity(clientIdent).setClientTlsCertHash(tlshash).build();
List fq = new ArrayList<>(2);
fq.add(Protocol.Query.newBuilder().setChannel(channelName).setConfigQuery(Protocol.ConfigQuery.newBuilder().build()).build());
fq.add(Protocol.Query.newBuilder().setChannel(channelName).setPeerQuery(Protocol.PeerMembershipQuery.newBuilder().build()).build());
Protocol.Request request = Protocol.Request.newBuilder().addAllQueries(fq).setAuthentication(authentication).build();
ByteString payloadBytes = request.toByteString();
ByteString signatureBytes = ltransactionContext.signByteStrings(payloadBytes);
Protocol.SignedRequest sr = Protocol.SignedRequest.newBuilder()
.setPayload(payloadBytes).setSignature(signatureBytes).build();
if (IS_TRACE_LEVEL && null != diagnosticFileDumper) { // dump protobuf we sent
logger.trace(format("Service discovery channel %s %s service chaincode query sent %s", channelName, serviceDiscoveryPeer,
diagnosticFileDumper.createDiagnosticProtobufFile(sr.toByteArray())));
}
final Protocol.Response response = serviceDiscoveryPeer.sendDiscoveryRequestAsync(sr).get(SERVICE_DISCOVERY_WAITTIME, TimeUnit.MILLISECONDS);
if (IS_TRACE_LEVEL && null != diagnosticFileDumper) { // dump protobuf we get
logger.trace(format("Service discovery channel %s %s service discovery returned %s", channelName, serviceDiscoveryPeer,
diagnosticFileDumper.createDiagnosticProtobufFile(response.toByteArray())));
}
serviceDiscoveryPeer.hasConnected();
final List resultsList = response.getResultsList();
Protocol.QueryResult queryResult;
Protocol.QueryResult queryResult2;
queryResult = resultsList.get(0); //configquery
if (queryResult.getResultCase().getNumber() == Protocol.QueryResult.ERROR_FIELD_NUMBER) {
logger.warn(format("Channel %s peer: %s error during service discovery %s", channelName, serviceDiscoveryPeer.toString(), queryResult.getError().getContent()));
continue;
}
queryResult2 = resultsList.get(1);
if (queryResult2.getResultCase().getNumber() == Protocol.QueryResult.ERROR_FIELD_NUMBER) {
logger.warn(format("Channel %s peer %s service discovery error %s", channelName, serviceDiscoveryPeer.toString(), queryResult2.getError().getContent()));
continue;
}
Protocol.ConfigResult configResult = queryResult.getConfigResult();
Map msps = configResult.getMspsMap();
Set cbbs = new HashSet<>(msps.size() * 4);
for (Map.Entry i : msps.entrySet()) {
final MspConfigPackage.FabricMSPConfig value = i.getValue();
final String mspid = value.getName();
cbbs.addAll(value.getRootCertsList());
cbbs.addAll(value.getIntermediateCertsList());
value.getTlsRootCertsList().forEach(bytes -> lsdNetwork.addTlsCert(mspid, bytes.toByteArray()));
value.getTlsIntermediateCertsList().forEach(bytes -> lsdNetwork.addTlsIntermCert(mspid, bytes.toByteArray()));
}
List toaddCerts = new LinkedList<>();
synchronized (certs) {
cbbs.forEach(bytes -> {
if (certs.add(bytes)) {
toaddCerts.add(bytes.toByteArray());
}
});
}
if (!toaddCerts.isEmpty()) { // add them to crypto store.
channel.client.getCryptoSuite().loadCACertificatesAsBytes(toaddCerts);
}
Map ordererEndpoints = new HashMap<>();
Map orderersMap = configResult.getOrderersMap();
for (Map.Entry i : orderersMap.entrySet()) {
final String mspid = i.getKey();
Protocol.Endpoints value = i.getValue();
for (Protocol.Endpoint l : value.getEndpointList()) {
logger.trace(format("Channel: %s peer: %s discovered orderer MSPID: %s, endpoint: %s:%s", channelName, serviceDiscoveryPeer, mspid, l.getHost(), l.getPort()));
String host = asLocalhost ? "localhost" : l.getHost();
String endpoint = (host + ":" + l.getPort()).trim().toLowerCase();
SDOrderer discoveredAlready = ordererEndpoints.get(endpoint);
if (discoveredAlready != null) {
if (!mspid.equals(discoveredAlready.getMspid())) {
logger.error(format("Service discovery in channel: %s, peer: %s found Orderer endpoint: %s with two mspids: '%s', '%s'", channelName, serviceDiscoveryPeer, endpoint, mspid, discoveredAlready.getMspid()));
continue; // report it and ignore.
}
logger.debug(format("Service discovery in channel: %s, peer: %s found Orderer endpoint: %s mspid: %s discovered twice", channelName, serviceDiscoveryPeer, endpoint, mspid));
continue;
}
Properties properties = new Properties();
if (asLocalhost) {
properties.put("hostnameOverride", l.getHost());
}
final SDOrderer sdOrderer = new SDOrderer(mspid, endpoint, lsdNetwork.getTlsCerts(mspid), lsdNetwork.getTlsIntermediateCerts(mspid), properties, isTLS);
ordererEndpoints.put(sdOrderer.getEndPoint(), sdOrderer);
}
}
lsdNetwork.ordererEndpoints = ordererEndpoints;
Protocol.PeerMembershipResult membership = queryResult2.getMembers();
lsdNetwork.endorsers = new HashMap<>();
for (Map.Entry peers : membership.getPeersByOrgMap().entrySet()) {
final String mspId = peers.getKey();
final Protocol.Peers peer = peers.getValue();
for (Protocol.Peer pp : peer.getPeersList()) {
SDEndorser ppp = new SDEndorser(pp, lsdNetwork.getTlsCerts(mspId), lsdNetwork.getTlsIntermediateCerts(mspId), asLocalhost, isTLS);
SDEndorser discoveredAlready = lsdNetwork.endorsers.get(ppp.getEndpoint());
if (null != discoveredAlready) {
if (!mspId.equals(discoveredAlready.getMspid())) {
logger.error(format("Service discovery in channel: %s, peer: %s, found endorser endpoint: %s with two mspids: '%s', '%s'", channelName, serviceDiscoveryPeer, ppp.getEndpoint(), mspId, discoveredAlready.getMspid()));
continue; // report it and ignore.
}
logger.debug(format("Service discovery in channel %s peer: %s found Endorser endpoint: %s mspid: %s discovered twice", channelName, serviceDiscoveryPeer, ppp.getEndpoint(), mspId));
continue;
}
logger.trace(format("Channel %s peer: %s discovered peer mspid group: %s, endpoint: %s, mspid: %s", channelName, serviceDiscoveryPeer, mspId, ppp.getEndpoint(), ppp.getMspid()));
lsdNetwork.endorsers.put(ppp.getEndpoint(), ppp);
}
}
lsdNetwork.discoveryTime = System.currentTimeMillis();
sdNetwork = lsdNetwork;
ret = lsdNetwork;
break;
} catch (Exception e) {
logger.warn(format("Channel %s peer %s service discovery error %s", channelName, serviceDiscoveryPeer, e.getMessage()));
}
}
logger.debug(format("Channel %s service discovery completed: %b", channelName, ret != null));
return ret;
}
public static class SDOrderer {
private final String mspid;
private final Collection tlsCerts;
private final Collection tlsIntermediateCerts;
private final String endPoint;
private final Properties properties;
private final boolean tls;
SDOrderer(String mspid, String endPoint, Collection tlsCerts, Collection tlsIntermediateCerts, Properties properties, boolean tls) {
this.mspid = mspid;
this.endPoint = endPoint;
this.tlsCerts = tlsCerts;
this.tlsIntermediateCerts = tlsIntermediateCerts;
this.properties = properties;
this.tls = tls;
}
public Collection getTlsIntermediateCerts() {
return tlsIntermediateCerts;
}
public String getEndPoint() {
return endPoint;
}
public String getMspid() {
return mspid;
}
public Collection getTlsCerts() {
return tlsCerts;
}
public Properties getProperties() {
return properties;
}
public boolean isTLS() {
return tls;
}
}
Map discoverEndorserEndpoints(TransactionContext transactionContext, List> chaincodeNames) throws ServiceDiscoveryException {
if (null == chaincodeNames) {
logger.warn("Discover of chaincode names was null.");
return Collections.emptyMap();
}
if (chaincodeNames.isEmpty()) {
logger.warn("Discover of chaincode names was empty.");
return Collections.emptyMap();
}
if (DEBUG) {
StringBuilder cns = new StringBuilder(1000);
String sep = "";
cns.append("[");
for (List s : chaincodeNames) {
ServiceDiscoveryChaincodeCalls n = s.get(0);
cns.append(sep).append(n.write(s.subList(1, s.size())));
sep = ", ";
}
cns.append("]");
logger.debug(format("Channel %s doing discovery for chaincodes: %s", channelName, cns.toString()));
}
ArrayList speers = new ArrayList<>(serviceDiscoveryPeers);
Collections.shuffle(speers);
final Map ret = new HashMap<>();
SDNetwork sdNetwork = networkDiscovery(transactionContext, false);
ServiceDiscoveryException serviceDiscoveryException = null;
for (Peer serviceDiscoveryPeer : speers) {
serviceDiscoveryException = null;
try {
URI serviceDiscoveryPeerURI = URI.create(serviceDiscoveryPeer.getUrl());
boolean isTLS = serviceDiscoveryPeerURI.getScheme().equals("grpcs");
logger.trace(format("Service discovery peer %s using TLS: %b", serviceDiscoveryPeerURI.toString(), isTLS));
logger.debug(format("Channel %s doing discovery for chaincodes on peer: %s", channelName, serviceDiscoveryPeer.toString()));
TransactionContext ltransactionContext = transactionContext.retryTransactionSameContext();
final byte[] clientTLSCertificateDigest = serviceDiscoveryPeer.getClientTLSCertificateDigest();
if (null == clientTLSCertificateDigest) {
logger.warn(format("Channel %s peer %s requires mutual tls for service discovery.", channelName, serviceDiscoveryPeer.toString()));
continue;
}
ByteString clientIdent = ltransactionContext.getIdentity().toByteString();
ByteString tlshash = ByteString.copyFrom(clientTLSCertificateDigest);
Protocol.AuthInfo authentication = Protocol.AuthInfo.newBuilder().setClientIdentity(clientIdent).setClientTlsCertHash(tlshash).build();
List fq = new ArrayList<>(chaincodeNames.size());
for (List chaincodeName : chaincodeNames) {
if (ret.containsKey(chaincodeName.get(0).getName())) {
continue;
}
LinkedList chaincodeCalls = new LinkedList<>();
chaincodeName.forEach(serviceDiscoveryChaincodeCalls -> chaincodeCalls.add(serviceDiscoveryChaincodeCalls.build()));
List cinn = new ArrayList<>(1);
chaincodeName.forEach(ServiceDiscoveryChaincodeCalls::build);
Protocol.ChaincodeInterest cci = Protocol.ChaincodeInterest.newBuilder().addAllChaincodes(chaincodeCalls).build();
cinn.add(cci);
Protocol.ChaincodeQuery chaincodeQuery = Protocol.ChaincodeQuery.newBuilder().addAllInterests(cinn).build();
fq.add(Protocol.Query.newBuilder().setChannel(channelName).setCcQuery(chaincodeQuery).build());
}
if (fq.size() == 0) {
//this would be odd but lets take care of it.
break;
}
Protocol.Request request = Protocol.Request.newBuilder().addAllQueries(fq).setAuthentication(authentication).build();
ByteString payloadBytes = request.toByteString();
ByteString signatureBytes = ltransactionContext.signByteStrings(payloadBytes);
Protocol.SignedRequest sr = Protocol.SignedRequest.newBuilder()
.setPayload(payloadBytes).setSignature(signatureBytes).build();
if (IS_TRACE_LEVEL && null != diagnosticFileDumper) { // dump protobuf we sent
logger.trace(format("Service discovery channel %s %s service chaincode query sent %s", channelName, serviceDiscoveryPeer,
diagnosticFileDumper.createDiagnosticProtobufFile(sr.toByteArray())));
}
logger.debug(format("Channel %s peer %s sending chaincode query request", channelName, serviceDiscoveryPeer.toString()));
final Protocol.Response response = serviceDiscoveryPeer.sendDiscoveryRequestAsync(sr).get(SERVICE_DISCOVERY_WAITTIME, TimeUnit.MILLISECONDS);
if (IS_TRACE_LEVEL && null != diagnosticFileDumper) { // dump protobuf we get
logger.trace(format("Service discovery channel %s %s service chaincode query returned %s", channelName, serviceDiscoveryPeer,
diagnosticFileDumper.createDiagnosticProtobufFile(response.toByteArray())));
}
logger.debug(format("Channel %s peer %s completed chaincode query request", channelName, serviceDiscoveryPeer.toString()));
serviceDiscoveryPeer.hasConnected();
for (Protocol.QueryResult queryResult : response.getResultsList()) {
if (queryResult.getResultCase().getNumber() == Protocol.QueryResult.ERROR_FIELD_NUMBER) {
ServiceDiscoveryException discoveryException = new ServiceDiscoveryException(format("Error %s", queryResult.getError().getContent()));
logger.error(discoveryException.getMessage());
continue;
}
if (queryResult.getResultCase().getNumber() != Protocol.QueryResult.CC_QUERY_RES_FIELD_NUMBER) {
ServiceDiscoveryException discoveryException = new ServiceDiscoveryException(format("Error expected chaincode endorsement query but got %s : ", queryResult.getResultCase().toString()));
logger.error(discoveryException.getMessage());
continue;
}
Protocol.ChaincodeQueryResult ccQueryRes = queryResult.getCcQueryRes();
if (ccQueryRes.getContentList().isEmpty()) {
throw new ServiceDiscoveryException(format("Error %s", queryResult.getError().getContent()));
}
for (Protocol.EndorsementDescriptor es : ccQueryRes.getContentList()) {
final String chaincode = es.getChaincode();
List layouts = new LinkedList<>();
for (Protocol.Layout layout : es.getLayoutsList()) {
SDLayout sdLayout = null;
Map quantitiesByGroupMap = layout.getQuantitiesByGroupMap();
for (Map.Entry qmap : quantitiesByGroupMap.entrySet()) {
final String key = qmap.getKey();
final int quantity = qmap.getValue();
if (quantity < 1) {
continue;
}
Protocol.Peers peers = es.getEndorsersByGroupsMap().get(key);
if (peers == null || peers.getPeersCount() == 0) {
continue;
}
List sdEndorsers = new LinkedList<>();
for (Protocol.Peer pp : peers.getPeersList()) {
SDEndorser ppp = new SDEndorser(pp, null, null, asLocalhost, isTLS);
final String endPoint = ppp.getEndpoint();
SDEndorser nppp = sdNetwork.getEndorserByEndpoint(endPoint);
if (null == nppp) {
sdNetwork = networkDiscovery(transactionContext, true);
if (null == sdNetwork) {
throw new ServiceDiscoveryException("Failed to discover network resources.");
}
nppp = sdNetwork.getEndorserByEndpoint(ppp.getEndpoint());
if (null == nppp) {
throw new ServiceDiscoveryException(format("Failed to discover peer endpoint information %s for chaincode %s ", endPoint, chaincode));
}
}
sdEndorsers.add(nppp);
}
if (sdLayout == null) {
sdLayout = new SDLayout();
layouts.add(sdLayout);
}
sdLayout.addGroup(key, quantity, sdEndorsers);
}
}
if (layouts.isEmpty()) {
logger.warn(format("Channel %s chaincode %s discovered no layouts!", channelName, chaincode));
} else {
if (DEBUG) {
StringBuilder sb = new StringBuilder(1000);
sb.append("Channel ").append(channelName)
.append(" found ").append(layouts.size()).append(" layouts for chaincode: ").append(es.getChaincode());
sb.append(", layouts: [");
String sep = "";
for (SDLayout layout : layouts) {
sb.append(sep).append(layout);
sep = ", ";
}
sb.append("]");
logger.debug(sb.toString());
}
ret.put(es.getChaincode(), new SDChaindcode(es.getChaincode(), layouts));
}
}
}
if (ret.size() == chaincodeNames.size()) {
break; // found them all.
}
} catch (ServiceDiscoveryException e) {
logger.warn(format("Service discovery error on peer %s. Error: %s", serviceDiscoveryPeer.toString(), e.getMessage()));
serviceDiscoveryException = e;
} catch (Exception e) {
logger.warn(format("Service discovery error on peer %s. Error: %s", serviceDiscoveryPeer.toString(), e.getMessage()));
serviceDiscoveryException = new ServiceDiscoveryException(e);
}
}
if (null != serviceDiscoveryException) {
throw serviceDiscoveryException;
}
if (ret.size() != chaincodeNames.size()) {
logger.warn((format("Channel %s failed to find all layouts for chaincodes. Expected: %d and found: %d", channelName, chaincodeNames.size(), ret.size())));
}
return ret;
}
/**
* Endorsement selection by layout group that has least required and block height is the highest (most up to date).
*/
static final EndorsementSelector ENDORSEMENT_SELECTION_LEAST_REQUIRED_BLOCKHEIGHT = sdChaindcode -> {
List layouts = sdChaindcode.getLayouts();
class LGroup { // local book keeping.
int stillRequred;
final Set endorsers = new HashSet<>();
LGroup(SDGroup group) {
endorsers.addAll(group.getEndorsers());
this.stillRequred = group.getStillRequired();
}
// return true if still required
boolean endorsed(Set endorsed) {
for (SDEndorser sdEndorser : endorsed) {
if (endorsers.contains(sdEndorser)) {
endorsers.remove(sdEndorser);
stillRequred = Math.max(0, stillRequred - 1);
}
}
return stillRequred > 0;
}
}
SDLayout pickedLayout = null;
Map> layoutEndorsers = new HashMap<>();
// if (layouts.size() > 1) { // pick layout by least number of endorsers .. least number of peers hit and smaller block!
for (SDLayout sdLayout : layouts) {
Set remainingGroups = new HashSet<>();
for (SDGroup sdGroup : sdLayout.getSDLGroups()) {
remainingGroups.add(new LGroup(sdGroup));
}
// These are required as there is no choice.
Set required = new HashSet<>();
for (LGroup lgroup : remainingGroups) {
if (lgroup.stillRequred == lgroup.endorsers.size()) {
required.addAll(lgroup.endorsers);
}
}
//add those that there are no choice.
if (required.size() > 0) {
Set remove = new HashSet<>(remainingGroups.size());
for (LGroup lGroup : remainingGroups) {
if (!lGroup.endorsed(required)) {
remove.add(lGroup);
}
}
remainingGroups.removeAll(remove);
Set sdEndorsers = layoutEndorsers.computeIfAbsent(sdLayout, k -> new HashSet<>());
sdEndorsers.addAll(required);
}
if (remainingGroups.isEmpty()) { // no more groups here done for this layout.
continue; // done with this layout there really were no choices.
}
//Now go through groups finding which endorsers can satisfy the most groups.
do {
Map matchCount = new HashMap<>();
for (LGroup group : remainingGroups) {
for (SDEndorser sdEndorser : group.endorsers) {
Integer count = matchCount.get(sdEndorser);
if (count == null) {
matchCount.put(sdEndorser, 1);
} else {
matchCount.put(sdEndorser, ++count);
}
}
}
Set theMost = new HashSet<>();
int maxMatch = 0;
for (Map.Entry m : matchCount.entrySet()) {
int count = m.getValue();
SDEndorser sdEndorser = m.getKey();
if (count > maxMatch) {
theMost.clear();
theMost.add(sdEndorser);
maxMatch = count;
} else if (count == maxMatch) {
theMost.add(sdEndorser);
}
}
Set theVeryMost = new HashSet<>(1);
long max = 0L;
// Tie breaker: Pick one with greatest ledger height.
for (SDEndorser sd : theMost) {
if (sd.getLedgerHeight() > max) {
max = sd.getLedgerHeight();
theVeryMost.clear();
theVeryMost.add(sd);
}
}
Set remove2 = new HashSet<>(remainingGroups.size());
for (LGroup lGroup : remainingGroups) {
if (!lGroup.endorsed(theVeryMost)) {
remove2.add(lGroup);
}
}
Set sdEndorsers = layoutEndorsers.computeIfAbsent(sdLayout, k -> new HashSet<>());
sdEndorsers.addAll(theVeryMost);
remainingGroups.removeAll(remove2);
} while (!remainingGroups.isEmpty());
// Now pick the layout with least endorsers
}
//Pick layout which needs least endorsements.
int min = Integer.MAX_VALUE;
Set theLeast = new HashSet<>();
for (Map.Entry> l : layoutEndorsers.entrySet()) {
SDLayout sdLayoutK = l.getKey();
Integer count = l.getValue().size();
if (count < min) {
theLeast.clear();
theLeast.add(sdLayoutK);
min = count;
} else if (count == min) {
theLeast.add(sdLayoutK);
}
}
if (theLeast.size() == 1) {
pickedLayout = theLeast.iterator().next();
} else {
long max = 0L;
// Tie breaker: Pick one with greatest ledger height.
for (SDLayout sdLayout : theLeast) {
int height = 0;
for (SDEndorser sdEndorser : layoutEndorsers.get(sdLayout)) {
height += sdEndorser.getLedgerHeight();
}
if (height > max) {
max = height;
pickedLayout = sdLayout;
}
}
}
final SDEndorserState sdEndorserState = new SDEndorserState();
sdEndorserState.setPickedEndorsers(layoutEndorsers.get(pickedLayout));
sdEndorserState.setPickedLayout(pickedLayout);
return sdEndorserState;
};
public static final EndorsementSelector DEFAULT_ENDORSEMENT_SELECTION = ENDORSEMENT_SELECTION_LEAST_REQUIRED_BLOCKHEIGHT;
/**
* Endorsement selection by random layout group and random endorsers there in.
*/
public static final EndorsementSelector ENDORSEMENT_SELECTION_RANDOM = sdChaindcode -> {
List layouts = sdChaindcode.getLayouts();
SDLayout pickedLayout = layouts.get(0);
if (layouts.size() > 1) { // more than one pick a random one.
pickedLayout = layouts.get(random.nextInt(layouts.size()));
}
Map retMap = new HashMap<>(); //hold results.
for (SDGroup group : pickedLayout.getSDLGroups()) { // go through groups getting random required endorsers
List endorsers = new ArrayList<>(group.getEndorsers());
int required = group.getStillRequired(); // what's needed in that group.
Collections.shuffle(endorsers); // randomize.
List sdEndorsers = endorsers.subList(0, required); // pick top endorsers.
sdEndorsers.forEach(sdEndorser -> {
retMap.putIfAbsent(sdEndorser.getEndpoint(), sdEndorser); // put if endpoint is not in there already.
});
}
final SDEndorserState sdEndorserState = new SDEndorserState(); //returned result.
sdEndorserState.setPickedEndorsers(retMap.values());
sdEndorserState.setPickedLayout(pickedLayout);
return sdEndorserState;
};
public static class SDChaindcode {
final String name;
final List layouts;
SDChaindcode(SDChaindcode sdChaindcode) {
name = sdChaindcode.name;
layouts = new LinkedList<>();
sdChaindcode.layouts.forEach(sdLayout -> layouts.add(new SDLayout(sdLayout)));
}
SDChaindcode(String name, List layouts) {
this.name = name;
this.layouts = layouts;
}
public List getLayouts() {
return Collections.unmodifiableList(layouts);
}
// returns number of layouts left.
int ignoreList(Collection names) {
if (names != null && !names.isEmpty()) {
layouts.removeIf(sdLayout -> !sdLayout.ignoreList(names));
}
return layouts.size();
}
int ignoreListSDEndorser(Collection sdEndorsers) {
if (sdEndorsers != null && !sdEndorsers.isEmpty()) {
layouts.removeIf(sdLayout -> !sdLayout.ignoreListSDEndorser(sdEndorsers));
}
return layouts.size();
}
boolean endorsedList(Collection sdEndorsers) {
boolean ret = false;
for (SDLayout sdLayout : layouts) {
if (sdLayout.endorsedList(sdEndorsers)) {
ret = true;
}
}
return ret;
}
// return the set needed or null if the policy was not meet.
Collection meetsEndorsmentPolicy(Set endpoints) {
Collection ret = null; // not meet.
for (SDLayout sdLayout : layouts) {
final Collection needed = sdLayout.meetsEndorsmentPolicy(endpoints);
if (needed != null && (ret == null || ret.size() > needed.size())) {
ret = needed; // needed is less so lets go with that.
}
}
return ret;
}
@Override
public String toString() {
StringBuilder sb = new StringBuilder(1000);
sb.append("SDChaindcode(name: ").append(name);
if (null != layouts && !layouts.isEmpty()) {
sb.append(", layouts: [");
String sep = "";
for (SDLayout sdLayout : layouts) {
sb.append(sep).append(sdLayout + "");
sep = " ,";
}
sb.append("]");
}
sb.append(")");
return sb.toString();
}
}
public static class SDLayout {
final List groups = new LinkedList<>();
SDLayout() { }
//Copy constructor
SDLayout(SDLayout sdLayout) {
for (SDGroup group : sdLayout.groups) {
new SDGroup(group);
}
}
@Override
public String toString() {
StringBuilder sb = new StringBuilder(1000);
sb.append("SDLayout: {");
if (!groups.isEmpty()) {
sb.append("groups: [");
String sep2 = "";
for (SDGroup group : groups) {
sb.append(sep2).append(group.toString());
sep2 = ", ";
}
sb.append("]");
} else {
sb.append(", groups: []");
}
sb.append("}");
return sb.toString();
}
//return true if the groups still exist to get endorsement.
boolean ignoreList(Collection names) {
boolean ret = true;
HashSet bnames = new HashSet<>(names);
for (SDGroup group : groups) {
if (!group.ignoreList(bnames)) {
ret = false; // group can no longer be satisfied.
}
}
return ret;
}
boolean ignoreListSDEndorser(Collection names) {
boolean ret = true;
HashSet bnames = new HashSet<>(names);
for (SDGroup group : groups) {
if (!group.ignoreListSDEndorser(bnames)) {
ret = false; // group can no longer be satisfied.
}
}
return ret;
}
// endorsement has been meet.
boolean endorsedList(Collection sdEndorsers) {
int endorsementMeet = 0;
for (SDGroup group : groups) {
if (group.endorsedList(sdEndorsers)) {
++endorsementMeet;
}
}
return endorsementMeet >= groups.size();
}
// Returns null when not meet and endorsers needed if it is.
Collection meetsEndorsmentPolicy(Set endpoints) {
Set ret = new HashSet<>();
for (SDGroup group : groups) {
Collection sdEndorsers = group.meetsEndorsmentPolicy(endpoints, null);
if (null == sdEndorsers) {
return null; // group was not satisfied
}
ret.addAll(sdEndorsers); // add all these endorsers.
}
return ret;
}
public Collection getSDLGroups() {
return new ArrayList<>(groups);
}
public class SDGroup {
final int required; // the number that's needed for the group to be endorsed.
final List endorsers = new LinkedList<>();
private final String name; // name of the groups - just for debug sake.
private int endorsed = 0; // number that have been now endorsed.
{
SDLayout.this.groups.add(this);
}
SDGroup(String name, int required, List endorsers) {
this.name = name;
this.required = required;
this.endorsers.addAll(endorsers);
}
SDGroup(SDGroup group) { //copy constructor
name = group.name;
required = group.required;
endorsers.addAll(group.endorsers);
endorsed = 0; // on copy reset to no endorsements
}
public int getStillRequired() {
return required - endorsed;
}
public String getName() {
return name;
}
public int getRequired() {
return required;
}
public Collection getEndorsers() {
return new ArrayList<>(endorsers);
}
//returns true if there are still sufficent endorsers for this group.
boolean ignoreList(Collection names) {
HashSet bnames = new HashSet<>(names);
endorsers.removeIf(endorser -> bnames.contains(endorser.getEndpoint()));
return endorsers.size() >= getStillRequired();
}
//returns true if there are still sufficent endorsers for this group.
boolean ignoreListSDEndorser(Collection sdEndorsers) {
HashSet bnames = new HashSet<>(sdEndorsers);
endorsers.removeIf(bnames::contains);
return endorsers.size() >= getStillRequired();
}
// retrun true if th endorsements have been meet.
boolean endorsedList(Collection sdEndorsers) {
//This is going to look odd so here goes: Service discovery can't guarantee the endpoint certs are valid
// and so there may be multiple endpoints with different MSP ids. However if we have gotten an
// endorsement from an endpoint that means it's been satisfied and can be removed.
if (endorsed >= required) {
return true;
}
if (!sdEndorsers.isEmpty()) {
final Set enames = new HashSet<>(sdEndorsers.size());
sdEndorsers.forEach(sdEndorser -> enames.add(sdEndorser.getEndpoint()));
endorsers.removeIf(endorser -> {
if (enames.contains(endorser.getEndpoint())) {
endorsed = Math.min(required, endorsed + 1);
return true; // remove it.
}
return false; // needs to stay in the list.
});
}
return endorsed >= required;
}
@Override
public String toString() {
StringBuilder sb = new StringBuilder(512);
sb.append("SDGroup: { name: ").append(name).append(", required: ").append(required);
if (!endorsers.isEmpty()) {
sb.append(", endorsers: [");
String sep2 = "";
for (SDEndorser sdEndorser : endorsers) {
sb.append(sep2).append(sdEndorser.toString());
sep2 = ", ";
}
sb.append("]");
} else {
sb.append(", endorsers: []");
}
sb.append("}");
return sb.toString();
}
// Returns
Collection meetsEndorsmentPolicy(Set allEndorsed, Collection requiredYet) {
Set ret = new HashSet<>(this.endorsers.size());
for (SDEndorser hasBeenEndorsed : allEndorsed) {
for (SDEndorser sdEndorser : endorsers) {
if (hasBeenEndorsed.equals(sdEndorser)) {
ret.add(sdEndorser);
if (ret.size() >= required) {
return ret; // got what we needed.
}
}
}
}
if (null != requiredYet) {
for (SDEndorser sdEndorser : endorsers) {
if (!allEndorsed.contains(sdEndorser)) {
requiredYet.add(sdEndorser);
}
}
}
return null; // group has not meet endorsement.
}
}
void addGroup(String key, int required, List endorsers) {
new SDGroup(key, required, endorsers);
}
}
public static class SDEndorserState {
private Collection sdEndorsers = new ArrayList<>();
private SDLayout pickedLayout;
public void setPickedEndorsers(Collection sdEndorsers) {
this.sdEndorsers = sdEndorsers;
}
Collection getSdEndorsers() {
return sdEndorsers;
}
public void setPickedLayout(SDLayout pickedLayout) {
this.pickedLayout = pickedLayout;
}
public SDLayout getPickedLayout() {
return pickedLayout;
}
}
public static class SDEndorser {
private List chaincodesList;
// private final Protocol.Peer proto;
private String endPoint = null;
private String name = null;
private String mspid;
private long ledgerHeight = -1L;
private final Collection tlsCerts;
private final Collection tlsIntermediateCerts;
private final boolean asLocalhost;
private final boolean tls;
SDEndorser() { // for testing only
tlsCerts = null;
tlsIntermediateCerts = null;
asLocalhost = false;
tls = false;
}
SDEndorser(Protocol.Peer peerRet, Collection tlsCerts, Collection tlsIntermediateCerts, boolean asLocalhost, boolean tls) {
this.tlsCerts = tlsCerts;
this.tlsIntermediateCerts = tlsIntermediateCerts;
this.asLocalhost = asLocalhost;
this.tls = tls;
parseEndpoint(peerRet);
parseLedgerHeight(peerRet);
parseIdentity(peerRet);
}
Collection getTLSCerts() {
return tlsCerts;
}
Collection getTLSIntermediateCerts() {
return tlsIntermediateCerts;
}
public String getName() {
return name;
}
public String getEndpoint() {
return endPoint;
}
public long getLedgerHeight() {
return ledgerHeight;
}
private void parseIdentity(Protocol.Peer peerRet) {
try {
Identities.SerializedIdentity serializedIdentity = Identities.SerializedIdentity.parseFrom(peerRet.getIdentity());
mspid = serializedIdentity.getMspid();
} catch (InvalidProtocolBufferException e) {
throw new InvalidProtocolBufferRuntimeException(e);
}
}
private String parseEndpoint(Protocol.Peer peerRet) throws InvalidProtocolBufferRuntimeException {
if (null == endPoint) {
try {
Message.Envelope membershipInfo = peerRet.getMembershipInfo();
final ByteString membershipInfoPayloadBytes = membershipInfo.getPayload();
final Message.GossipMessage gossipMessageMemberInfo = Message.GossipMessage.parseFrom(membershipInfoPayloadBytes);
if (Message.GossipMessage.ContentCase.ALIVE_MSG.getNumber() != gossipMessageMemberInfo.getContentCase().getNumber()) {
throw new RuntimeException(format("Error %s", "bad"));
}
Message.AliveMessage aliveMsg = gossipMessageMemberInfo.getAliveMsg();
name = aliveMsg.getMembership().getEndpoint();
if (name != null) {
if (asLocalhost) {
endPoint = "localhost" + name.substring(name.lastIndexOf(':'));
} else {
endPoint = name.toLowerCase().trim(); //makes easier on comparing.
}
}
} catch (InvalidProtocolBufferException e) {
throw new InvalidProtocolBufferRuntimeException(e);
}
}
return endPoint;
}
private long parseLedgerHeight(Protocol.Peer peerRet) throws InvalidProtocolBufferRuntimeException {
if (-1L == ledgerHeight) {
try {
Message.Envelope stateInfo = peerRet.getStateInfo();
final Message.GossipMessage stateInfoGossipMessage = Message.GossipMessage.parseFrom(stateInfo.getPayload());
Message.GossipMessage.ContentCase contentCase = stateInfoGossipMessage.getContentCase();
if (contentCase.getNumber() != Message.GossipMessage.ContentCase.STATE_INFO.getNumber()) {
throw new RuntimeException("" + contentCase.getNumber());
}
Message.StateInfo stateInfo1 = stateInfoGossipMessage.getStateInfo();
ledgerHeight = stateInfo1.getProperties().getLedgerHeight();
this.chaincodesList = stateInfo1.getProperties().getChaincodesList();
} catch (InvalidProtocolBufferException e) {
throw new InvalidProtocolBufferRuntimeException(e);
}
}
return ledgerHeight;
}
@Override
public boolean equals(Object obj) {
if (obj == this) {
return true;
}
if (!(obj instanceof SDEndorser)) {
return false;
}
SDEndorser other = (SDEndorser) obj;
return Objects.equals(mspid, other.getMspid()) && Objects.equals(endPoint, other.getEndpoint());
}
@Override
public int hashCode() {
return Objects.hash(mspid, endPoint);
}
Set getChaincodeNames() {
if (chaincodesList == null) {
return Collections.emptySet();
}
HashSet ret = new HashSet<>(chaincodesList.size());
chaincodesList.forEach(chaincode -> ret.add(chaincode.getName()));
return ret;
}
public String getMspid() {
return mspid;
}
public boolean isTLS() {
return this.tls;
}
@Override
public String toString() {
return "SDEndorser-" + mspid + "-" + endPoint;
}
}
private static List topNbyHeight(int required, List endorsers) {
ArrayList ret = new ArrayList<>(endorsers);
ret.sort(Comparator.comparingLong(SDEndorser::getLedgerHeight));
return ret.subList(Math.max(ret.size() - required, 0), ret.size());
}
private ScheduledFuture seviceDiscovery = null;
private static final int SERVICE_DISCOVER_FREQ_SECONDS = config.getServiceDiscoveryFreqSeconds();
void run() {
if (channel.isShutdown() || SERVICE_DISCOVER_FREQ_SECONDS < 1) {
return;
}
if (seviceDiscovery == null) {
seviceDiscovery = Executors.newSingleThreadScheduledExecutor(r -> {
Thread t = Executors.defaultThreadFactory().newThread(r);
t.setDaemon(true);
return t;
}).scheduleAtFixedRate(() -> {
logger.debug(format("Channel %s starting service rediscovery after %d seconds.", channelName, SERVICE_DISCOVER_FREQ_SECONDS));
fullNetworkDiscovery(true);
}, SERVICE_DISCOVER_FREQ_SECONDS, SERVICE_DISCOVER_FREQ_SECONDS, TimeUnit.SECONDS);
}
}
SDNetwork fullNetworkDiscovery(boolean force) {
if (channel.isShutdown()) {
return null;
}
logger.trace(format("Full network discovery force: %b", force));
try {
SDNetwork osdNetwork = sdNetwork;
SDNetwork lsdNetwork = networkDiscovery(transactionContext.retryTransactionSameContext(), force);
if (channel.isShutdown() || null == lsdNetwork) {
return null;
}
if (osdNetwork != lsdNetwork) { // means it changed.
final Set chaincodesNames = lsdNetwork.getChaincodesNames();
List> lcc = new LinkedList<>();
chaincodesNames.forEach(s -> {
List lc = new LinkedList<>();
lc.add(new ServiceDiscoveryChaincodeCalls(s));
lcc.add(lc);
});
chaindcodeMap = discoverEndorserEndpoints(transactionContext.retryTransactionSameContext(), lcc);
if (channel.isShutdown()) {
return null;
}
channel.sdUpdate(lsdNetwork);
}
return lsdNetwork;
} catch (Exception e) {
logger.warn("Service discovery got error:" + e.getMessage(), e);
} finally {
logger.trace("Full network rediscovery completed.");
}
return null;
}
void shutdown() {
logger.trace("Service discovery shutdown.");
try {
final ScheduledFuture lseviceDiscovery = seviceDiscovery;
seviceDiscovery = null;
if (null != lseviceDiscovery) {
lseviceDiscovery.cancel(true);
}
} catch (Exception e) {
logger.error(e);
//best effort.
}
}
@Override
protected void finalize() throws Throwable {
shutdown();
super.finalize();
}
public interface EndorsementSelector {
SDEndorserState endorserSelector(SDChaindcode sdChaindcode);
EndorsementSelector ENDORSEMENT_SELECTION_RANDOM = ServiceDiscovery.ENDORSEMENT_SELECTION_RANDOM;
EndorsementSelector ENDORSEMENT_SELECTION_LEAST_REQUIRED_BLOCKHEIGHT = ServiceDiscovery.ENDORSEMENT_SELECTION_LEAST_REQUIRED_BLOCKHEIGHT;
}
}
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