public class PrioritySchedulerTaskInterceptor extends SchedulerServiceTaskInterceptor implements PrioritySchedulerService
PrioritySchedulerService pool so that tasks can be intercepted and either
wrapped, or modified, before being submitted to the pool. This class can be passed a lambda to
PrioritySchedulerTaskInterceptor(PrioritySchedulerService, BiFunction)}, or
SubmitterSchedulerTaskInterceptor.wrapTask(Runnable, boolean) can be overridden to provide the task which should be submitted
to the PrioritySchedulerService. Please see the javadocs of
SubmitterSchedulerTaskInterceptor.wrapTask(Runnable, boolean) for more details about ways a task can be modified or
wrapped.
Other variants of task wrappers: ExecutorTaskInterceptor,
SubmitterSchedulerTaskInterceptor, PrioritySchedulerTaskInterceptor.
| Constructor and Description |
|---|
PrioritySchedulerTaskInterceptor(PrioritySchedulerService parentScheduler,
java.util.function.BiFunction<java.lang.Runnable,java.lang.Boolean,java.lang.Runnable> taskManipulator)
Constructs a wrapper for
PrioritySchedulerService pool so that tasks can be intercepted
and modified, before being submitted to the pool. |
| Modifier and Type | Method and Description |
|---|---|
void |
execute(java.lang.Runnable task,
TaskPriority priority)
Executes the task as soon as possible for the given priority.
|
TaskPriority |
getDefaultPriority()
Get the default priority for the scheduler.
|
long |
getMaxWaitForLowPriority()
Getter for the amount of time a low priority task will wait during thread contention before
it is eligible for execution.
|
int |
getQueuedTaskCount(TaskPriority priority)
Returns a count of how many tasks are either waiting to be executed, or are scheduled to be
executed at a future point for a specific priority.
|
int |
getWaitingForExecutionTaskCount(TaskPriority priority)
Returns a count of how many tasks are either waiting to be executed for a specific priority.
|
void |
schedule(java.lang.Runnable task,
long delayInMs,
TaskPriority priority)
Schedule a task with a given delay and a specified priority.
|
void |
scheduleAtFixedRate(java.lang.Runnable task,
long initialDelay,
long period,
TaskPriority priority)
Schedule a fixed rate recurring task to run.
|
void |
scheduleWithFixedDelay(java.lang.Runnable task,
long initialDelay,
long recurringDelay,
TaskPriority priority)
Schedule a fixed delay recurring task to run.
|
<T> ListenableFuture<T> |
submit(java.util.concurrent.Callable<T> task,
TaskPriority priority)
Submit a
Callable to run as soon as possible for the given priority. |
<T> ListenableFuture<T> |
submit(java.lang.Runnable task,
T result,
TaskPriority priority)
Submit a task to run as soon as possible for the given priority.
|
<T> ListenableFuture<T> |
submitScheduled(java.util.concurrent.Callable<T> task,
long delayInMs,
TaskPriority priority)
Schedule a
Callable with a given delay. |
<T> ListenableFuture<T> |
submitScheduled(java.lang.Runnable task,
T result,
long delayInMs,
TaskPriority priority)
Schedule a task with a given delay and a specified priority.
|
getActiveTaskCount, getQueuedTaskCount, getWaitingForExecutionTaskCount, isShutdown, remove, removeschedule, scheduleAtFixedRate, scheduleWithFixedDelay, submitScheduled, submitScheduled, wrapTask, wrapTaskexecute, submit, submitequals, getClass, hashCode, notify, notifyAll, toString, wait, wait, waitsubmit, submitScheduledgetActiveTaskCount, getQueuedTaskCount, getWaitingForExecutionTaskCount, isShutdown, remove, removeschedule, scheduleAtFixedRate, scheduleWithFixedDelay, submitScheduled, submitScheduled, submitScheduledsubmit, submit, submitpublic PrioritySchedulerTaskInterceptor(PrioritySchedulerService parentScheduler, java.util.function.BiFunction<java.lang.Runnable,java.lang.Boolean,java.lang.Runnable> taskManipulator)
PrioritySchedulerService pool so that tasks can be intercepted
and modified, before being submitted to the pool.parentScheduler - An instance of PrioritySchedulerService to wraptaskManipulator - A lambda to manipulate a Runnable that was submitted for executionpublic void execute(java.lang.Runnable task,
TaskPriority priority)
PrioritySchedulerServiceexecute in interface PrioritySchedulerServicetask - runnable to executepriority - priority for task to get available thread to run onpublic <T> ListenableFuture<T> submit(java.lang.Runnable task, T result, TaskPriority priority)
PrioritySchedulerService
The Future.get() method will return the provided result once the runnable has
completed.
submit in interface PrioritySchedulerServiceT - type of result returned from the futuretask - runnable to be executedresult - result to be returned from resulting future .get() when runnable completespriority - priority for task to get available thread to run onpublic <T> ListenableFuture<T> submit(java.util.concurrent.Callable<T> task, TaskPriority priority)
PrioritySchedulerServiceCallable to run as soon as possible for the given priority. This is needed
when a result needs to be consumed from the callable.submit in interface PrioritySchedulerServiceT - type of result returned from the futuretask - callable to be executedpriority - priority for task to get available thread to run onpublic void schedule(java.lang.Runnable task,
long delayInMs,
TaskPriority priority)
PrioritySchedulerServiceschedule in interface PrioritySchedulerServicetask - runnable to executedelayInMs - time in milliseconds to wait to execute taskpriority - priority for task to get available thread to run onpublic <T> ListenableFuture<T> submitScheduled(java.lang.Runnable task, T result, long delayInMs, TaskPriority priority)
PrioritySchedulerService
The Future.get() method will return the provided result once the runnable
has completed.
submitScheduled in interface PrioritySchedulerServiceT - type of result returned from the futuretask - runnable to executeresult - result to be returned from resulting future .get() when runnable completesdelayInMs - time in milliseconds to wait to execute taskpriority - priority for task to get available thread to run onpublic <T> ListenableFuture<T> submitScheduled(java.util.concurrent.Callable<T> task, long delayInMs, TaskPriority priority)
PrioritySchedulerServiceCallable with a given delay. This is needed when a result needs to be
consumed from the callable.submitScheduled in interface PrioritySchedulerServiceT - type of result returned from the futuretask - callable to be executeddelayInMs - time in milliseconds to wait to execute taskpriority - priority for task to get available thread to run onpublic void scheduleWithFixedDelay(java.lang.Runnable task,
long initialDelay,
long recurringDelay,
TaskPriority priority)
PrioritySchedulerServicerecurringDelay + runtime for the provided task.
Unlike ScheduledExecutorService if the task throws an exception,
subsequent executions are NOT suppressed or prevented. So if the task throws an exception on
every run, the task will continue to be executed at the provided recurring delay (possibly
throwing an exception on each execution).
scheduleWithFixedDelay in interface PrioritySchedulerServicetask - runnable to be executedinitialDelay - delay in milliseconds until first runrecurringDelay - delay in milliseconds for running task after last finishpriority - priority for task to get available thread to run onpublic void scheduleAtFixedRate(java.lang.Runnable task,
long initialDelay,
long period,
TaskPriority priority)
PrioritySchedulerService
Unlike ScheduledExecutorService if the task throws an exception,
subsequent executions are NOT suppressed or prevented. So if the task throws an exception on
every run, the task will continue to be executed at the provided recurring delay (possibly
throwing an exception on each execution).
scheduleAtFixedRate in interface PrioritySchedulerServicetask - runnable to be executedinitialDelay - delay in milliseconds until first runperiod - amount of time in milliseconds between the start of recurring executionspriority - priority for task to get available thread to run onpublic TaskPriority getDefaultPriority()
PrioritySchedulerServicegetDefaultPriority in interface PrioritySchedulerServicepublic long getMaxWaitForLowPriority()
PrioritySchedulerServicegetMaxWaitForLowPriority in interface PrioritySchedulerServicepublic int getQueuedTaskCount(TaskPriority priority)
PrioritySchedulerServicePrioritySchedulerService.getWaitingForExecutionTaskCount(TaskPriority).getQueuedTaskCount in interface PrioritySchedulerServicepriority - priority for tasks to be countedpublic int getWaitingForExecutionTaskCount(TaskPriority priority)
PrioritySchedulerServicegetWaitingForExecutionTaskCount in interface PrioritySchedulerServicepriority - priority for tasks to be counted