/** Thread specific initialization */
void initialize() {
if (m_backend == BackendTarget.HSQLDB_BACKEND) {
m_hsql = HsqlBackend.initializeHSQLBackend(m_siteId, m_context);
} else {
m_hsql = null;
}
}
public static void shutdownInstance() {
synchronized (backendLock) {
if (m_backend != null) {
m_backend.shutdown();
m_backend = null;
}
}
}
/** Thread specific initialization */
void initialize(String serializedCatalog, long timestamp) {
if (m_backend == BackendTarget.NONE) {
m_hsql = null;
m_ee = new MockExecutionEngine();
} else if (m_backend == BackendTarget.HSQLDB_BACKEND) {
m_hsql = HsqlBackend.initializeHSQLBackend(m_siteId, m_context);
m_ee = new MockExecutionEngine();
} else {
m_hsql = null;
m_ee = initializeEE(serializedCatalog, timestamp);
}
m_snapshotter =
new SnapshotSiteProcessor(
new Runnable() {
@Override
public void run() {
m_scheduler.offer(new SnapshotTask());
}
},
m_snapshotPriority,
new SnapshotSiteProcessor.IdlePredicate() {
@Override
public boolean idle(long now) {
return (now - 5) > m_lastTxnTime;
}
});
if (m_startAction == VoltDB.START_ACTION.LIVE_REJOIN) {
initializeForLiveRejoin();
}
if (m_rejoinTaskLog == null) {
m_rejoinTaskLog =
new TaskLog() {
@Override
public void logTask(TransactionInfoBaseMessage message) throws IOException {}
@Override
public TransactionInfoBaseMessage getNextMessage() throws IOException {
return null;
}
@Override
public void setEarliestTxnId(long txnId) {}
@Override
public boolean isEmpty() throws IOException {
return true;
}
@Override
public void close() throws IOException {}
};
}
}
void shutdown() {
try {
if (m_hsql != null) {
HsqlBackend.shutdownInstance();
}
if (m_ee != null) {
m_ee.release();
}
if (m_snapshotter != null) {
m_snapshotter.shutdown();
}
} catch (InterruptedException e) {
hostLog.warn("Interrupted shutdown execution site.", e);
}
}
public static HsqlBackend initializeHSQLBackend(long siteId, CatalogContext context) {
synchronized (backendLock) {
if (m_backend == null) {
try {
m_backend = new HsqlBackend(siteId);
final String binDDL = context.database.getSchema();
final String ddl = Encoder.decodeBase64AndDecompress(binDDL);
final String[] commands = ddl.split("\n");
for (String command : commands) {
String decoded_cmd = Encoder.hexDecodeToString(command);
decoded_cmd = decoded_cmd.trim();
if (decoded_cmd.length() == 0) {
continue;
}
m_backend.runDDL(decoded_cmd);
}
} catch (final Exception ex) {
hostLog.fatal("Unable to construct HSQL backend");
VoltDB.crashLocalVoltDB(ex.getMessage(), true, ex);
}
}
return m_backend;
}
}
void shutdown() {
if (m_hsql != null) {
HsqlBackend.shutdownInstance();
}
}
