/**
* WARNING: beware of hacks.
*
* <p>Fails a member of this cluster by making it not respond to heart beats. A {@link
* RepairKit} is returned which is able to repair the instance (i.e start the network) again.
*
* @param db the {@link HighlyAvailableGraphDatabase} to fail.
* @return a {@link RepairKit} which can repair the failure.
* @throws IllegalArgumentException if the given db isn't a member of this cluster.
*/
public RepairKit fail(HighlyAvailableGraphDatabase db) throws Throwable {
assertMember(db);
ClusterClient clusterClient =
db.getDependencyResolver().resolveDependency(ClusterClient.class);
LifeSupport clusterClientLife =
(LifeSupport)
accessible(clusterClient.getClass().getDeclaredField("life")).get(clusterClient);
NetworkReceiver receiver =
instance(NetworkReceiver.class, clusterClientLife.getLifecycleInstances());
receiver.stop();
ExecutorLifecycleAdapter statemachineExecutor =
instance(ExecutorLifecycleAdapter.class, clusterClientLife.getLifecycleInstances());
statemachineExecutor.stop();
NetworkSender sender =
instance(NetworkSender.class, clusterClientLife.getLifecycleInstances());
sender.stop();
List<Lifecycle> stoppedServices = new ArrayList<>();
stoppedServices.add(sender);
stoppedServices.add(statemachineExecutor);
stoppedServices.add(receiver);
return new StartNetworkAgainKit(db, stoppedServices);
}
/**
* WARNING: beware of hacks.
*
* <p>Fails a member of this cluster by making it not respond to heart beats. A {@link
* RepairKit} is returned which is able to repair the instance (i.e start the network) again.
*
* @param db the {@link HighlyAvailableGraphDatabase} to fail.
* @return a {@link RepairKit} which can repair the failure.
* @throws IllegalArgumentException if the given db isn't a member of this cluster.
*/
public RepairKit fail(HighlyAvailableGraphDatabase db) throws Throwable {
assertMember(db);
ClusterClient clusterClient =
db.getDependencyResolver().resolveDependency(ClusterClient.class);
LifeSupport clusterClientLife =
(LifeSupport)
accessible(clusterClient.getClass().getDeclaredField("life")).get(clusterClient);
NetworkInstance network =
instance(NetworkInstance.class, clusterClientLife.getLifecycleInstances());
network.stop();
int serverId =
db.getDependencyResolver().resolveDependency(Config.class).get(HaSettings.server_id);
db.shutdown();
return new StartDatabaseAgainKit(this, serverId);
}