org.apache.sling.event.jobs.consumer

Interface JobExecutionContext

@ProviderType
public interface JobExecutionContext

Since:

1.1

Nested Class Summary

Nested Classes

Modifier and Type	Interface and Description
static interface	JobExecutionContext.ResultBuilder

Method Summary

Modifier and Type	Method and Description
void	asyncProcessingFinished(JobExecutionResult result) Report an async result.
void	incrementProgressCount(int steps) Update the progress by additionally marking the provided number of steps as finished.
void	initProgress(int steps, long eta) Indicate that the job executor is able to report the progress.
boolean	isStopped() If a job is stoppable, it should periodically check this method and stop processing if the method return true.
void	log(String message, Object... args) Log a message.
JobExecutionContext.ResultBuilder	result() Build a result for the processing.
void	updateProgress(long eta) Update the progress to the new ETA.

Method Detail

asyncProcessingFinished

void asyncProcessingFinished(JobExecutionResult result)

Report an async result.

Throws:

IllegalStateException - If the job is not processed asynchronously or if this method has already been called.

isStopped

boolean isStopped()

If a job is stoppable, it should periodically check this method and stop processing if the method return true. If a job is stopped and the job executor detects this, its up to the implementation to decide the result of such a state. There might be use cases where the job returns JobExecutionResult.succeeded() although it didn't process everything, or JobExecutionResult.failed() to retry later on or JobExecutionResult.cancelled().

Returns:

Whether this job has been stopped from the outside.

initProgress

void initProgress(int steps,
                  long eta)

Indicate that the job executor is able to report the progress. The progress can either be reported by a step count, assuming that all steps take roughly the same amount of time. Or the progress can be reported by an ETA containing the number of seconds the job needs to finish. This method should only be called once, consecutive calls have no effect. By using a step count of 100, the progress can be displayed in percentage.

Parameters:

steps - Number of total steps or -1 if the number of steps is unknown.

eta - Number of seconds the process should take or -1 of it's not known now.

incrementProgressCount

void incrementProgressCount(int steps)

Update the progress by additionally marking the provided number of steps as finished. If the total number of finished steps is equal or higher to the initial number of steps reported in initProgress(int, long), then the job progress is assumed to be 100%. This method has only effect if initProgress(int, long) has been called first with a positive number for steps

Parameters:

step - The number of finished steps since the last call.

updateProgress

void updateProgress(long eta)

Update the progress to the new ETA. This method has only effect if initProgress(int, long) has been called first.

Parameters:

eta - The new ETA

log

void log(String message,
         Object... args)

Log a message. A job consumer can use this method during job processing to add additional information about the current state of job processing. As calling this method adds a significant overhead it should only be used to log a few statements per job processing. If a consumer wants to output detailed information about the processing it should persists it by itself and not use this method for it. The message and the arguments are passed to the MessageFormat class.

Parameters:

message - A message

args - Additional arguments

result

JobExecutionContext.ResultBuilder result()

Build a result for the processing.