/** Distribute peer information */
private void sendHello() {
HeartBeatMsg.Hello msg = new HeartBeatMsg.Hello();
for (Map.Entry<String, JiniPeer> entry : agent.getPeers().entrySet()) {
if (!entry.getValue().getReady()) continue;
msg.appendPeers(entry.getKey());
}
msg.setUnversionedHeaders(agent.getHeaders());
for (JiniPeer peer : agent.getPeers().values()) {
if (!peer.getReady()) continue;
msg.setSequence(peer.incSequence());
peer.send(msg);
}
}
@Override
public long processTimer(long interval) {
ArrayList<String> expired = new ArrayList<String>();
for (JiniPeer peer : agent.getPeers().values()) {
if (peer.expiredAt() > 0 && System.currentTimeMillis() >= peer.expiredAt()) {
expired.add(peer.getEndpoint());
agent.onEvent(JiniEvent.PEER_EXIT, peer.getEndpoint());
} else if (System.currentTimeMillis() >= peer.evasiveAt()) {
peer.send(new HeartBeatMsg.Ping(peer.incSequence()));
}
}
if (!expired.isEmpty()) agent.removePeer(expired.toArray(new String[0]));
return interval;
}
@Override
public void processCallback(JiniMsg msg) {
String endpoint = msg.getIdentityString();
JiniPeer peer = agent.findPeer(endpoint);
if (peer == null && msg.getId() == HeartBeatMsg.PING) peer = agent.connectPeer(endpoint);
if (peer == null) return;
switch (msg.getId()) {
case HeartBeatMsg.PING:
peer.send(new HeartBeatMsg.PingOk(peer.incSequence()));
break;
case HeartBeatMsg.PING_OK:
if (!peer.getReady()) {
peer.setReady(true);
sendHello();
agent.onEvent(JiniEvent.PEER_ENTER, peer.getEndpoint());
}
break;
case HeartBeatMsg.HELLO:
HeartBeatMsg.Hello hello = (HeartBeatMsg.Hello) msg;
List<String> peers = hello.getPeers();
for (String peerAddr : peers) {
if (peerAddr.equals(agent.getAddress())) continue;
JiniPeer peer_ = agent.findPeer(peerAddr);
if (peer_ == null) {
// Other node knows new peer information
agent.connectPeer(peerAddr);
}
}
break;
}
peer.refresh(evasive, expired);
}
@Override
public void initialize(JiniAgent agent, Object... args) {
this.agent = agent;
for (String addr : addrs) agent.connectPeer(addr);
}