@Override
public boolean isCurrent() {
if (Hosts.isCoordinator()) {
syncState.set(this);
}
return super.isCurrent();
}
@Override
void isLocked() {
File dbLockFile = this.getLockFile();
if (dbLockFile.exists() && Hosts.isCoordinator()) {
this.failStop();
}
}
@Override
public boolean load() throws Exception {
Hosts.awaitDatabases();
Locks.DISABLED.isLocked();
Locks.PARTITIONED.isLocked();
Groovyness.run("setup_dbpool.groovy");
OrderedShutdown.registerShutdownHook(
Empyrean.class,
new Runnable() {
@Override
public void run() {
try {
for (String ctx : PersistenceContexts.list()) {
try {
DatabaseClusterMBean db = Databases.lookup(ctx, TimeUnit.SECONDS.toMillis(5));
for (String host : db.getinactiveDatabases()) {
Databases.disable(host);
}
for (String host : db.getactiveDatabases()) {
Databases.disable(host);
}
} catch (Exception ex) {
LOG.error(ex);
}
}
} catch (NoSuchElementException ex) {
LOG.error(ex);
}
}
});
TimeUnit.SECONDS.sleep(INITIAL_DB_SYNC_RETRY_WAIT);
if (!Hosts.isCoordinator() && Hosts.localHost().hasDatabase()) {
while (!Databases.enable(Hosts.localHost())) {
LOG.warn(
LogUtil.subheader("Synchronization of the database failed: " + Hosts.localHost()));
if (counter.decrementAndGet() == 0) {
LOG.fatal("Restarting process to force re-synchronization.");
System.exit(123);
} else {
LOG.warn(
"Sleeping for " + INITIAL_DB_SYNC_RETRY_WAIT + " seconds before trying again.");
TimeUnit.SECONDS.sleep(INITIAL_DB_SYNC_RETRY_WAIT);
}
}
Locks.DISABLED.create();
Hosts.UpdateEntry.INSTANCE.apply(Hosts.localHost());
LOG.info(LogUtil.subheader("Database synchronization complete: " + Hosts.localHost()));
}
return true;
}
public static Boolean isVolatile() {
if (!Bootstrap.isFinished() || BootstrapArgs.isInitializeSystem()) {
return false;
} else if (!Hosts.isCoordinator() && BootstrapArgs.isCloudController()) {
return !isSynchronized() || !activeHosts.get().containsAll(hostDatabases.get());
} else if (!activeHosts.get().equals(hostDatabases.get())) {
return true;
} else {
return !Hosts.list(FILTER_SYNCING_DBS).isEmpty();
}
}
private static void prepareConnections(final Host host, final String contextName)
throws NoSuchElementException {
final String dbUrl =
"jdbc:" + ServiceUris.remote(Database.class, host.getBindAddress(), contextName);
final String hostName = host.getDisplayName();
final DriverDatabaseMBean database = Databases.lookupDatabase(contextName, hostName);
database.setuser(getUserName());
database.setpassword(getPassword());
database.setweight(
Hosts.isCoordinator(host) ? DATABASE_WEIGHT_PRIMARY : DATABASE_WEIGHT_SECONDARY);
database.setlocal(host.isLocalHost());
database.setlocation(dbUrl);
}
private static void resetDatabaseWeights(final String contextName) {
for (final Host host : Hosts.listActiveDatabases())
try {
lookupDatabase(contextName, host.getDisplayName())
.setweight(
Hosts.isCoordinator(host) ? DATABASE_WEIGHT_PRIMARY : DATABASE_WEIGHT_SECONDARY);
} catch (NoSuchElementException e) {
// Weight will be set on activation
} catch (Exception e) {
LOG.error(
"Error resetting weight for host " + host.getDisplayName() + " context " + contextName,
e);
}
}