org.jgroups.protocols.MAKE_BATCH Maven / Gradle / Ivy
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This artifact provides a single jar that contains all classes required to use remote EJB and JMS, including
all dependencies. It is intended for use by those not using maven, maven users should just import the EJB and
JMS BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up
with different versions on classes on the class path).
package org.jgroups.protocols;
import org.jgroups.Address;
import org.jgroups.Event;
import org.jgroups.Message;
import org.jgroups.annotations.MBean;
import org.jgroups.annotations.Property;
import org.jgroups.conf.AttributeType;
import org.jgroups.stack.Protocol;
import org.jgroups.util.AsciiString;
import org.jgroups.util.MessageBatch;
import org.jgroups.util.TimeScheduler;
import java.util.*;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.Future;
import java.util.concurrent.TimeUnit;
/**
* Intercepts individual up messages and creates batches from them, passing the batches up. Used by unit tests, not
* meant to be used in production.
* @author Bela Ban
* @since 3.5
*/
@MBean(description="Intercepts single messages and passes them up as batches")
public class MAKE_BATCH extends Protocol {
@Property(description="handle multicast messages")
protected boolean multicasts=false;
@Property(description="handle unicast messages")
protected boolean unicasts=false;
@Property(description="Do not add OOB messages to a batch if true")
protected boolean skip_oob=true;
@Property(description="Time to sleep (in ms) from the reception of the first message to sending a batch up",
type=AttributeType.TIME)
protected long sleep_time=100;
// all maps have sender and msg list pairs
protected final Map> reg_map_mcast=new ConcurrentHashMap<>();
protected final Map> reg_map_ucast=new ConcurrentHashMap<>();
protected final Map> oob_map_mcast=new ConcurrentHashMap<>();
protected final Map> oob_map_ucast=new ConcurrentHashMap<>();
protected TimeScheduler timer;
protected AsciiString cluster_name;
protected Future batcher;
public MAKE_BATCH multicasts(boolean flag) {this.multicasts=flag; return this;}
public MAKE_BATCH unicasts(boolean flag) {this.unicasts=flag; return this;}
public MAKE_BATCH sleepTime(long time) {this.sleep_time=time; return this;}
public boolean skipOOB() {return skip_oob;}
public MAKE_BATCH skipOOB(boolean s) {this.skip_oob=s; return this;}
public void start() throws Exception {
super.init();
timer=getTransport().getTimer();
startBatcher();
}
public void stop() {
super.stop();
stopBatcher();
}
public Object down(Event evt) {
switch(evt.getType()) {
case Event.CONNECT:
case Event.CONNECT_USE_FLUSH:
case Event.CONNECT_WITH_STATE_TRANSFER:
case Event.CONNECT_WITH_STATE_TRANSFER_USE_FLUSH:
cluster_name=new AsciiString((String)evt.getArg());
break;
}
return down_prot.down(evt);
}
public Object up(Message msg) {
if(msg.isFlagSet(Message.Flag.OOB) && skip_oob)
return up_prot.up(msg);
if((msg.getDest() == null && multicasts) || (msg.getDest() != null && unicasts)) {
queue(msg);
return null;
}
return up_prot.up(msg);
}
public void up(MessageBatch batch) {
for(Iterator it=batch.iterator(); it.hasNext();) {
Message msg=it.next();
if(msg.isFlagSet(Message.Flag.OOB) && skip_oob) {
up_prot.up(msg);
it.remove();
continue;
}
if((msg.dest() == null && multicasts) || (msg.dest() != null && unicasts)) {
queue(msg);
it.remove();
}
}
if(!batch.isEmpty())
up_prot.up(batch);
}
protected void queue(Message msg) {
Address dest=msg.getDest();
Map> map;
if(dest == null)
map=msg.isFlagSet(Message.Flag.OOB)? oob_map_mcast : reg_map_mcast;
else
map=msg.isFlagSet(Message.Flag.OOB)? oob_map_ucast : reg_map_ucast;
List list=map.computeIfAbsent(msg.src(), k -> new ArrayList<>());
list.add(msg);
}
public synchronized MAKE_BATCH startBatcher() {
if(timer == null)
timer=getTransport().getTimer();
if(batcher == null || batcher.isDone())
batcher=timer.scheduleWithFixedDelay(new Batcher(), sleep_time, sleep_time, TimeUnit.MILLISECONDS);
return this;
}
protected synchronized MAKE_BATCH stopBatcher() {
if(batcher != null) {
batcher.cancel(true);
batcher=null;
}
return this;
}
protected class Batcher implements Runnable {
public void run() {
List batches=new ArrayList<>();
synchronized(oob_map_mcast) {
for(Map.Entry> entry: oob_map_mcast.entrySet()) {
MessageBatch batch=new MessageBatch(null, entry.getKey(), cluster_name, true, entry.getValue()).mode(MessageBatch.Mode.OOB);
batches.add(batch);
}
oob_map_mcast.clear();
}
synchronized(oob_map_ucast) {
for(Map.Entry> entry: oob_map_ucast.entrySet()) {
MessageBatch batch=new MessageBatch(local_addr, entry.getKey(), cluster_name, false, entry.getValue()).mode(MessageBatch.Mode.OOB);
batches.add(batch);
}
oob_map_ucast.clear();
}
synchronized(reg_map_mcast) {
for(Map.Entry> entry: reg_map_mcast.entrySet()) {
MessageBatch batch=new MessageBatch(null, entry.getKey(), cluster_name, true, entry.getValue()).mode(MessageBatch.Mode.REG);
batches.add(batch);
}
reg_map_mcast.clear();
}
synchronized(reg_map_ucast) {
for(Map.Entry> entry: reg_map_ucast.entrySet()) {
MessageBatch batch=new MessageBatch(local_addr, entry.getKey(), cluster_name, false, entry.getValue()).mode(MessageBatch.Mode.REG);
batches.add(batch);
}
reg_map_ucast.clear();
}
batches.stream().filter(batch -> !batch.isEmpty()).forEach(batch -> up_prot.up(batch));
}
}
}