/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.apache.catalina.tribes.transport.bio;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;
import org.apache.catalina.tribes.Channel;
import org.apache.catalina.tribes.ChannelException;
import org.apache.catalina.tribes.ChannelMessage;
import org.apache.catalina.tribes.Member;
import org.apache.catalina.tribes.io.ChannelData;
import org.apache.catalina.tribes.io.XByteBuffer;
import org.apache.catalina.tribes.transport.AbstractSender;
import org.apache.catalina.tribes.transport.MultiPointSender;
/**
*
* @author Filip Hanik
* @version $Id: MultipointBioSender.java 1511907 2013-08-08 18:07:43Z markt $
*
*/
public class MultipointBioSender extends AbstractSender implements MultiPointSender {
public MultipointBioSender() {
// NO-OP
}
protected final HashMap<Member, BioSender> bioSenders = new HashMap<>();
@Override
public synchronized void sendMessage(Member[] destination, ChannelMessage msg) throws ChannelException {
byte[] data = XByteBuffer.createDataPackage((ChannelData)msg);
BioSender[] senders = setupForSend(destination);
ChannelException cx = null;
for ( int i=0; i<senders.length; i++ ) {
try {
senders[i].sendMessage(data,(msg.getOptions()&Channel.SEND_OPTIONS_USE_ACK)==Channel.SEND_OPTIONS_USE_ACK);
} catch (Exception x) {
if (cx == null) cx = new ChannelException(x);
cx.addFaultyMember(destination[i],x);
}
}
if (cx!=null ) throw cx;
}
protected BioSender[] setupForSend(Member[] destination) throws ChannelException {
ChannelException cx = null;
BioSender[] result = new BioSender[destination.length];
for ( int i=0; i<destination.length; i++ ) {
try {
BioSender sender = bioSenders.get(destination[i]);
if (sender == null) {
sender = new BioSender();
AbstractSender.transferProperties(this,sender);
sender.setDestination(destination[i]);
bioSenders.put(destination[i], sender);
}
result[i] = sender;
if (!result[i].isConnected() ) result[i].connect();
result[i].keepalive();
}catch (Exception x ) {
if ( cx== null ) cx = new ChannelException(x);
cx.addFaultyMember(destination[i],x);
}
}
if ( cx!=null ) throw cx;
else return result;
}
@Override
public void connect() throws IOException {
//do nothing, we connect on demand
setConnected(true);
}
private synchronized void close() throws ChannelException {
ChannelException x = null;
Object[] members = bioSenders.keySet().toArray();
for (int i=0; i<members.length; i++ ) {
Member mbr = (Member)members[i];
try {
BioSender sender = bioSenders.get(mbr);
sender.disconnect();
}catch ( Exception e ) {
if ( x == null ) x = new ChannelException(e);
x.addFaultyMember(mbr,e);
}
bioSenders.remove(mbr);
}
if ( x != null ) throw x;
}
@Override
public void add(Member member) {
// NO-OP
// Members are defined by the array of members specified in the call to
// sendMessage()
}
@Override
public void remove(Member member) {
//disconnect senders
BioSender sender = bioSenders.remove(member);
if ( sender != null ) sender.disconnect();
}
@Override
public synchronized void disconnect() {
try {close(); }catch (Exception x){/* Ignore */}
setConnected(false);
}
@Override
public void finalize() {
try {disconnect(); }catch ( Exception e){/* Ignore */}
}
@Override
public boolean keepalive() {
boolean result = false;
@SuppressWarnings("unchecked")
Map.Entry<Member,BioSender>[] entries = bioSenders.entrySet().toArray(new Map.Entry[bioSenders.size()]);
for ( int i=0; i<entries.length; i++ ) {
BioSender sender = entries[i].getValue();
if ( sender.keepalive() ) {
bioSenders.remove(entries[i].getKey());
}
}
return result;
}
}