@Override
public boolean process(String type, String message, Object object) {
Applications applications = (Applications) object;
if (GroupInstanceTerminatingEvent.class.getName().equals(type)) {
// Return if applications has not been initialized
if (!applications.isInitialized()) return false;
// Parse complete message and build event
GroupInstanceTerminatingEvent event =
(GroupInstanceTerminatingEvent)
MessagingUtil.jsonToObject(message, GroupInstanceTerminatingEvent.class);
ApplicationsUpdater.acquireWriteLockForApplication(event.getAppId());
try {
return doProcess(event, applications);
} finally {
ApplicationsUpdater.releaseWriteLockForApplication(event.getAppId());
}
} else {
if (nextProcessor != null) {
// ask the next processor to take care of the message.
return nextProcessor.process(type, message, applications);
} else {
throw new RuntimeException(
String.format(
"Failed to process message using available message processors: [type] %s [body] %s",
type, message));
}
}
}
@Override
public boolean process(String type, String message, Object object) {
Topology topology = (Topology) object;
if (MemberMaintenanceModeEvent.class.getName().equals(type)) {
// Return if topology has not been initialized
if (!TopologyManager.isInitialized()) return false;
// Parse complete message and build event
MemberMaintenanceModeEvent event =
(MemberMaintenanceModeEvent)
MessagingUtil.jsonToObject(message, MemberMaintenanceModeEvent.class);
TopologyUpdater.acquireWriteLockForCluster(event.getServiceName(), event.getClusterId());
try {
return doProcess(event, topology);
} finally {
TopologyUpdater.releaseWriteLockForCluster(event.getServiceName(), event.getClusterId());
}
} else {
if (nextProcessor != null) {
// ask the next processor to take care of the message.
return nextProcessor.process(type, message, topology);
} else {
throw new RuntimeException(
String.format(
"Failed to process message using available message processors: [type] %s [body] %s",
type, message));
}
}
}
@Override
public boolean process(String type, String message, Object object) {
if (InstanceCleanupMemberEvent.class.getName().equals(type)) {
// Parse complete message and build event
InstanceCleanupMemberEvent event =
(InstanceCleanupMemberEvent) Util.jsonToObject(message, InstanceCleanupMemberEvent.class);
// Notify event listeners
notifyEventListeners(event);
return true;
} else {
if (nextProcessor != null) {
return nextProcessor.process(type, message, object);
} else {
throw new RuntimeException(
String.format(
"Failed to process instance clean up using available message processors: [type] %s [body] %s",
type, message));
}
}
}
@Override
public boolean process(String type, String message, Object object) {
if (CompleteTopologyRequestEvent.class.getName().equals(type)) {
// Parse complete message and build event
CompleteTopologyRequestEvent event =
(CompleteTopologyRequestEvent)
MessagingUtil.jsonToObject(message, CompleteTopologyRequestEvent.class);
// Notify event listeners
notifyEventListeners(event);
return true;
} else {
if (nextProcessor != null) {
// ask the next processor to take care of the message.
return nextProcessor.process(type, message, object);
} else {
throw new RuntimeException(
String.format(
"Failed to process message using available message processors: [type] %s [body] %s",
type, message));
}
}
}
@Override
public boolean process(String type, String message, Object object) {
Topology topology = (Topology) object;
if (MemberTerminatedEvent.class.getName().equals(type)) {
// Return if topology has not been initialized
if (!topology.isInitialized()) return false;
// Parse complete message and build event
MemberTerminatedEvent event =
(MemberTerminatedEvent) Util.jsonToObject(message, MemberTerminatedEvent.class);
// Apply service filter
if (TopologyServiceFilter.getInstance().isActive()) {
if (TopologyServiceFilter.getInstance().serviceNameExcluded(event.getServiceName())) {
// Service is excluded, do not update topology or fire event
if (log.isDebugEnabled()) {
log.debug(String.format("Service is excluded: [service] %s", event.getServiceName()));
}
return false;
}
}
// Apply cluster filter
if (TopologyClusterFilter.getInstance().isActive()) {
if (TopologyClusterFilter.getInstance().clusterIdExcluded(event.getClusterId())) {
// Cluster is excluded, do not update topology or fire event
if (log.isDebugEnabled()) {
log.debug(String.format("Cluster is excluded: [cluster] %s", event.getClusterId()));
}
return false;
}
}
// Validate event against the existing topology
Service service = topology.getService(event.getServiceName());
if (service == null) {
if (log.isWarnEnabled()) {
log.warn(String.format("Service does not exist: [service] %s", event.getServiceName()));
}
return false;
}
Cluster cluster = service.getCluster(event.getClusterId());
if (cluster == null) {
if (log.isWarnEnabled()) {
log.warn(
String.format(
"Cluster does not exist: [service] %s [cluster] %s",
event.getServiceName(), event.getClusterId()));
}
return false;
}
Member member = cluster.getMember(event.getMemberId());
if (member == null) {
if (log.isWarnEnabled()) {
log.warn(
String.format(
"Member does not exist: [service] %s [cluster] %s [member] %s",
event.getServiceName(), event.getClusterId(), event.getMemberId()));
}
return false;
}
// Apply member filter
if (TopologyMemberFilter.getInstance().isActive()) {
if (TopologyMemberFilter.getInstance().lbClusterIdExcluded(member.getLbClusterId())) {
if (log.isDebugEnabled()) {
log.debug(
String.format("Member is excluded: [lb-cluster-id] %s", member.getLbClusterId()));
}
return false;
}
}
if (member.getStatus() == MemberStatus.Terminated) {
if (log.isWarnEnabled()) {
log.warn(
String.format(
"Member already terminated: [service] %s [cluster] %s [member] %s",
event.getServiceName(), event.getClusterId(), event.getMemberId()));
}
} else {
// Apply changes to the topology
member.setStatus(MemberStatus.Terminated);
// removing the member from the cluster
cluster.removeMember(member);
if (log.isInfoEnabled()) {
log.info(
String.format(
"Member terminated: [service] %s [cluster] %s [member] %s",
event.getServiceName(), event.getClusterId(), event.getMemberId()));
}
}
notifyEventListeners(event);
return true;
} else {
if (nextProcessor != null) {
// ask the next processor to take care of the message.
return nextProcessor.process(type, message, topology);
} else {
throw new RuntimeException(
String.format(
"Failed to process message using available message processors: [type] %s [body] %s",
type, message));
}
}
}
