/**
* Submits or schedules an {@link ApplicationTask} on the the shared executor service.
*
* @param <T> The task result class
* @param applicationName The application's full name, or null to default to current application's
* name
* @param code The code to execute
* @param context The context made available to the task
* @param delay Initial delay in milliseconds, or zero for ASAP
* @param repeatEvery Repeat delay in milliseconds, or zero for no repetition
* @param fixedRepeat Whether repetitions are at fixed times, or if the repeat delay begins when
* the task ends
* @return A future for the task
* @see #getExecutor()
*/
public <T> Future<T> codeTask(
String applicationName,
String code,
Object context,
int delay,
int repeatEvery,
boolean fixedRepeat) {
Application application =
applicationName == null ? this.application : InstanceUtil.getApplication(applicationName);
ApplicationTask<T> task = new ApplicationTask<T>(application, code, context);
return task(task, delay, repeatEvery, fixedRepeat);
}
/**
* Gets the shared executor service, creating one if it doesn't exist.
*
* <p>If shared globals are not set up, gets the application's executor service.
*
* <p>This setting can be configured by setting an attribute named <code>
* com.threecrickets.prudence.executor</code> in the component's {@link Context}.
*
* @return The executor service
*/
public ExecutorService getExecutor() {
if (executor == null) {
ConcurrentMap<String, Object> attributes = getSharedGlobals();
if (attributes != null) {
executor = (ExecutorService) attributes.get(InstanceUtil.EXECUTOR_ATTRIBUTE);
if (executor == null) {
executor =
Executors.newScheduledThreadPool(Runtime.getRuntime().availableProcessors() * 2 + 1);
ExecutorService existing =
(ExecutorService) attributes.putIfAbsent(InstanceUtil.EXECUTOR_ATTRIBUTE, executor);
if (existing != null) executor = existing;
}
} else executor = InstanceUtil.getComponent().getTaskService();
}
return executor;
}
