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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.io.IOException;
import java.io.ObjectInputStream;
import java.io.Serializable;
import java.util.Properties;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.hyperledger.fabric.protos.common.Common;
import org.hyperledger.fabric.protos.orderer.Ab;
import org.hyperledger.fabric.protos.orderer.Ab.DeliverResponse;
import org.hyperledger.fabric.sdk.exception.InvalidArgumentException;
import org.hyperledger.fabric.sdk.exception.TransactionException;
import org.hyperledger.fabric.sdk.helper.Config;
import static java.lang.String.format;
import static org.hyperledger.fabric.sdk.helper.Utils.checkGrpcUrl;
import static org.hyperledger.fabric.sdk.helper.Utils.isNullOrEmpty;
import static org.hyperledger.fabric.sdk.helper.Utils.parseGrpcUrl;
/**
* The Orderer class represents a orderer to which SDK sends deploy, invoke, or query requests.
*/
public class Orderer implements Serializable {
public static final String ORDERER_ORGANIZATION_MSPID_PROPERTY = "org.hyperledger.fabric.sdk.orderer.organization_mspid";
private static final Config config = Config.getConfig();
private static final Log logger = LogFactory.getLog(Orderer.class);
private static final long serialVersionUID = 4281642068914263247L;
private final Properties properties;
private final String name;
private final String url;
private transient boolean shutdown = false;
private Channel channel;
private transient volatile OrdererClient ordererClient = null;
private transient byte[] clientTLSCertificateDigest;
private String channelName = "";
private transient String id = config.getNextID();
Orderer(String name, String url, Properties properties) throws InvalidArgumentException {
if (isNullOrEmpty(name)) {
throw new InvalidArgumentException("Invalid name for orderer");
}
Exception e = checkGrpcUrl(url);
if (e != null) {
throw new InvalidArgumentException(e);
}
this.name = name;
this.url = url;
this.properties = properties == null ? new Properties() : (Properties) properties.clone(); //keep our own copy.
logger.trace("Created " + toString());
}
static Orderer createNewInstance(String name, String url, Properties properties) throws InvalidArgumentException {
return new Orderer(name, url, properties);
}
byte[] getClientTLSCertificateDigest() {
if (null == clientTLSCertificateDigest) {
clientTLSCertificateDigest = Endpoint.createEndpoint(url, properties).getClientTLSCertificateDigest();
}
return clientTLSCertificateDigest;
}
/**
* Get Orderer properties.
*
* @return properties
*/
public Properties getProperties() {
return properties == null ? null : (Properties) properties.clone();
}
/**
* Return Orderer's name
*
* @return orderer's name.
*/
public String getName() {
return name;
}
/**
* getUrl - the Grpc url of the Orderer
*
* @return the Grpc url of the Orderer
*/
public String getUrl() {
return url;
}
void unsetChannel() {
logger.debug(format("%s unsetting channel", toString()));
channel = null;
channelName = "";
}
/**
* Get the channel of which this orderer is a member.
*
* @return {Channel} The channel of which this orderer is a member.
*/
Channel getChannel() {
return channel;
}
void setChannel(Channel channel) throws InvalidArgumentException {
if (channel == null) {
throw new InvalidArgumentException("setChannel Channel can not be null");
}
if (null != this.channel && this.channel != channel) {
throw new InvalidArgumentException(format("Can not add orderer %s to channel %s because it already belongs to channel %s.",
name, channel.getName(), this.channel.getName()));
}
logger.debug(format("%s setting channel %s", toString(), channel));
this.channel = channel;
this.channelName = channel.getName();
toString = null; //recalculate
}
/**
* Send transaction to Order
*
* @param transaction transaction to be sent
*/
Ab.BroadcastResponse sendTransaction(Common.Envelope transaction) throws Exception {
if (shutdown) {
throw new TransactionException(format("Orderer %s was shutdown.", name));
}
logger.debug(format("Orderer.sendTransaction %s", toString()));
OrdererClient localOrdererClient = getOrdererClient();
try {
return localOrdererClient.sendTransaction(transaction);
} catch (Throwable t) {
removeOrdererClient(true);
throw t;
}
}
DeliverResponse[] sendDeliver(Common.Envelope transaction) throws TransactionException {
if (shutdown) {
throw new TransactionException(format("Orderer %s was shutdown.", name));
}
OrdererClient localOrdererClient = getOrdererClient();
logger.debug(format("%s Orderer.sendDeliver", toString()));
try {
return localOrdererClient.sendDeliver(transaction);
} catch (Throwable t) {
logger.error(format("%s removing %s due to %s", this.toString(), localOrdererClient, t.getMessage()));
removeOrdererClient(true);
throw t;
}
}
private synchronized OrdererClient getOrdererClient() {
OrdererClient localOrdererClient = ordererClient;
if (localOrdererClient == null || !localOrdererClient.isChannelActive()) {
logger.trace(format("Channel %s creating new orderer client %s", channelName, this.toString()));
localOrdererClient = new OrdererClient(this, Endpoint.createEndpoint(url, properties).getChannelBuilder(), properties);
ordererClient = localOrdererClient;
}
return localOrdererClient;
}
private synchronized void removeOrdererClient(boolean force) {
OrdererClient localOrderClient = ordererClient;
ordererClient = null;
if (null != localOrderClient) {
logger.debug(format("Channel %s removing orderer client %s, isActive: %b", channelName, toString(), localOrderClient.isChannelActive()));
try {
localOrderClient.shutdown(force);
} catch (Exception e) {
logger.error(toString() + " error message: " + e.getMessage());
logger.trace(e);
}
}
}
synchronized void shutdown(boolean force) {
if (shutdown) {
return;
}
shutdown = true;
logger.debug(format("Shutting down %s", toString()));
removeOrdererClient(true);
channel = null;
channelName = "";
}
private String endPoint;
String getEndpoint() {
if (null == endPoint) {
Properties properties = parseGrpcUrl(url);
endPoint = properties.get("host") + ":" + properties.getProperty("port").toLowerCase().trim();
}
return endPoint;
}
@Override
protected void finalize() throws Throwable {
try {
logger.trace("finalize " + toString());
shutdown(true);
} finally {
super.finalize();
}
}
private void readObject(ObjectInputStream in) throws IOException, ClassNotFoundException {
in.defaultReadObject();
id = config.getNextID();
}
private transient String toString;
@Override
public String toString() {
String ltoString = toString;
if (ltoString == null) {
String mspid = "";
if (properties != null && !isNullOrEmpty(properties.getProperty(ORDERER_ORGANIZATION_MSPID_PROPERTY))) {
mspid = ", mspid: " + properties.getProperty(ORDERER_ORGANIZATION_MSPID_PROPERTY);
}
ltoString = "Orderer{id: " + id + ", channelName: " + channelName + ", name:" + name + ", url: " + url + mspid + "}";
toString = ltoString;
}
return ltoString;
}
} // end Orderer
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