/** Stops this store service. */
public void stop() throws IOException {
ResettableTimer timer = (ResettableTimer) m_timerRef.get();
if (timer != null) {
if (!timer.isShutDown()) {
// Shutdown and await termination...
timer.shutDown();
}
// Clear reference...
m_timerRef.compareAndSet(timer, null);
}
// Write the latest version to disk...
flush();
}
/** {@inheritDoc} */
public void updated(Dictionary properties) throws ConfigurationException {
boolean writeDisabled = DEFAULT_WRITE_DISABLED;
int writeDelayValue = DEFAULT_WRITE_DELAY_VALUE;
TimeUnit writeDelayUnit = DEFAULT_WRITE_DELAY_TIMEUNIT;
if (properties != null) {
Object wd = properties.get(KEY_WRITE_DISABLED);
if (wd == null) {
throw new ConfigurationException(KEY_WRITE_DISABLED, "Missing write disabled value!");
}
try {
writeDisabled = Boolean.parseBoolean((String) wd);
} catch (Exception e) {
throw new ConfigurationException(KEY_WRITE_DISABLED, "Invalid write disabled value!");
}
if (!writeDisabled) {
Object wdv = properties.get(KEY_WRITE_DELAY_VALUE);
if (wdv == null) {
throw new ConfigurationException(KEY_WRITE_DELAY_VALUE, "Missing write delay value!");
}
try {
writeDelayValue = Integer.parseInt((String) wdv);
} catch (Exception e) {
throw new ConfigurationException(KEY_WRITE_DELAY_VALUE, "Invalid write delay value!");
}
if (writeDelayValue <= 0) {
throw new ConfigurationException(KEY_WRITE_DELAY_VALUE, "Invalid write delay value!");
}
Object wdu = properties.get(KEY_WRITE_DELAY_TIMEUNIT);
if (wdu != null) {
try {
writeDelayUnit = TimeUnit.valueOf(((String) wdu).toUpperCase());
} catch (Exception e) {
throw new ConfigurationException(KEY_WRITE_DELAY_TIMEUNIT, "Invalid write delay unit!");
}
}
}
}
ResettableTimer timer = (ResettableTimer) m_timerRef.get();
if (timer != null) {
timer.shutDown();
}
m_timerRef.compareAndSet(
timer, writeDisabled ? null : new ResettableTimer(this, writeDelayValue, writeDelayUnit));
}
/**
* Notifies the background timer to schedule a task for storing the contents of this store to
* disk.
*/
private void scheduleTask() {
ResettableTimer timer = (ResettableTimer) m_timerRef.get();
if (timer != null && !timer.isShutDown()) {
timer.schedule();
}
}