AgentAttache attache = (AgentAttache) link.attachment();
final Command[] cmds = request.getCommands();
Command cmd = cmds[0];
boolean logD = true;
Response response = null;
if (attache == null) {
request.logD("Processing the first command ");
if (!(cmd instanceof StartupCommand)) {
s_logger.warn("Throwing away a request because it came through as the first command on a connect: " + request);
return;
}
StartupCommand[] startups = new StartupCommand[cmds.length];
for (int i = 0; i < cmds.length; i++) {
startups[i] = (StartupCommand) cmds[i];
}
attache = handleConnectedAgent(link, startups, request);
if (attache == null) {
s_logger.warn("Unable to create attache for agent: " + request);
}
return;
}
final long hostId = attache.getId();
if (s_logger.isDebugEnabled()) {
if (cmd instanceof PingRoutingCommand) {
final PingRoutingCommand ping = (PingRoutingCommand) cmd;
if (ping.getNewStates().size() > 0) {
s_logger.debug("SeqA " + hostId + "-" + request.getSequence() + ": Processing " + request);
} else {
logD = false;
s_logger.debug("Ping from " + hostId);
s_logger.trace("SeqA " + hostId + "-" + request.getSequence() + ": Processing " + request);
}
} else if (cmd instanceof PingCommand) {
logD = false;
s_logger.debug("Ping from " + hostId);
s_logger.trace("SeqA " + attache.getId() + "-" + request.getSequence() + ": Processing " + request);
} else {
s_logger.debug("SeqA " + attache.getId() + "-" + request.getSequence() + ": Processing " + request);
}
}
final Answer[] answers = new Answer[cmds.length];
for (int i = 0; i < cmds.length; i++) {
cmd = cmds[i];
Answer answer = null;
try {
if (cmd instanceof StartupRoutingCommand) {
final StartupRoutingCommand startup = (StartupRoutingCommand) cmd;
answer = new StartupAnswer(startup, attache.getId(), getPingInterval());
} else if (cmd instanceof StartupProxyCommand) {
final StartupProxyCommand startup = (StartupProxyCommand) cmd;
answer = new StartupAnswer(startup, attache.getId(), getPingInterval());
} else if (cmd instanceof StartupSecondaryStorageCommand) {
final StartupSecondaryStorageCommand startup = (StartupSecondaryStorageCommand) cmd;
answer = new StartupAnswer(startup, attache.getId(), getPingInterval());
} else if (cmd instanceof StartupStorageCommand) {
final StartupStorageCommand startup = (StartupStorageCommand) cmd;
answer = new StartupAnswer(startup, attache.getId(), getPingInterval());
} else if (cmd instanceof ShutdownCommand) {
final ShutdownCommand shutdown = (ShutdownCommand) cmd;
final String reason = shutdown.getReason();
s_logger.info("Host " + attache.getId() + " has informed us that it is shutting down with reason " + reason + " and detail " + shutdown.getDetail());
if (reason.equals(ShutdownCommand.Update)) {
//disconnectWithoutInvestigation(attache, Event.UpdateNeeded);
throw new CloudRuntimeException("Agent update not implemented");
} else if (reason.equals(ShutdownCommand.Requested)) {
disconnectWithoutInvestigation(attache, Event.ShutdownRequested);
}
return;
} else if (cmd instanceof AgentControlCommand) {
answer = handleControlCommand(attache, (AgentControlCommand) cmd);
} else {
handleCommands(attache, request.getSequence(), new Command[] { cmd });
if (cmd instanceof PingCommand) {
long cmdHostId = ((PingCommand) cmd).getHostId();
// if the router is sending a ping, verify the
// gateway was pingable
if (cmd instanceof PingRoutingCommand) {
boolean gatewayAccessible = ((PingRoutingCommand) cmd).isGatewayAccessible();
HostVO host = _hostDao.findById(Long.valueOf(cmdHostId));
if (!gatewayAccessible) {
// alert that host lost connection to
// gateway (cannot ping the default route)
DataCenterVO dcVO = _dcDao.findById(host.getDataCenterId());
HostPodVO podVO = _podDao.findById(host.getPodId());
String hostDesc = "name: " + host.getName() + " (id:" + host.getId() + "), availability zone: " + dcVO.getName() + ", pod: " + podVO.getName();
_alertMgr.sendAlert(AlertManager.ALERT_TYPE_ROUTING, host.getDataCenterId(), host.getPodId(), "Host lost connection to gateway, " + hostDesc, "Host [" + hostDesc
+ "] lost connection to gateway (default route) and is possibly having network connection issues.");
} else {
_alertMgr.clearAlert(AlertManager.ALERT_TYPE_ROUTING, host.getDataCenterId(), host.getPodId());
}
}
answer = new PingAnswer((PingCommand) cmd);
} else if (cmd instanceof ReadyAnswer) {
HostVO host = _hostDao.findById(attache.getId());
if (host == null) {
if (s_logger.isDebugEnabled()) {
s_logger.debug("Cant not find host " + attache.getId());
}
}
answer = new Answer(cmd);
} else {
answer = new Answer(cmd);
}
}
} catch (final Throwable th) {
s_logger.warn("Caught: ", th);
answer = new Answer(cmd, false, th.getMessage());
}
answers[i] = answer;
}
response = new Response(request, answers, _nodeId, attache.getId());
if (s_logger.isDebugEnabled()) {
if (logD) {
s_logger.debug("SeqA " + attache.getId() + "-" + response.getSequence() + ": Sending " + response);
} else {
s_logger.trace("SeqA " + attache.getId() + "-" + response.getSequence() + ": Sending " + response);
}
}
try {
link.send(response.toBytes());
} catch (final ClosedChannelException e) {
s_logger.warn("Unable to send response because connection is closed: " + response);
}
}