Package com.github.sonus21.rqueue.utils.backoff

Class FixedTaskExecutionBackOff

java.lang.Object

com.github.sonus21.rqueue.utils.backoff.FixedTaskExecutionBackOff

All Implemented Interfaces:

TaskExecutionBackOff

public class FixedTaskExecutionBackOff
extends Object
implements TaskExecutionBackOff

Implementation of the TaskExecutionBackOff class, that always return the same value, except if number of failures have increased too high.

Default delay for the task is 5 seconds, and maximum number of retries is 2147483647.

There's another implementation of this, that provides exponential delay.

See Also:

• ExponentialTaskExecutionBackOff

Field Summary

Fields

Modifier and Type	Field	Description
static final long	DEFAULT_INTERVAL	The default task delay: 5000 ms = 5 seconds.

Fields inherited from interface com.github.sonus21.rqueue.utils.backoff.TaskExecutionBackOff

STOP

Constructor Summary

Constructors

Constructor	Description
FixedTaskExecutionBackOff()	Create an instance with an interval of 5000L ms and maximum value of retries.
FixedTaskExecutionBackOff(long interval, int maxRetries)	Create an instance.

Method Summary

Modifier and Type	Method	Description
boolean	equals(Object other)
long	getInterval()	Return the delay between two attempts in milliseconds.
protected long	getInterval(Object message, RqueueMessage rqueueMessage, int failureCount)
int	getMaxRetries()	Return the maximum number of retries.
protected int	getMaxRetries(Object message, RqueueMessage rqueueMessage, int failureCount)
long	nextBackOff(Object message, RqueueMessage rqueueMessage, int failureCount)	Return the number of milliseconds to wait for the same message to be consumed by other consumers.
void	setInterval(long interval)	Set the delay between two attempts in milliseconds.
void	setMaxRetries(int maxRetries)	Set the maximum number of retries

Methods inherited from class java.lang.Object

clone, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

DEFAULT_INTERVAL

public static final long DEFAULT_INTERVAL

The default task delay: 5000 ms = 5 seconds.

See Also:

• Constant Field Values

Constructor Details

FixedTaskExecutionBackOff

public FixedTaskExecutionBackOff()

Create an instance with an interval of 5000L ms and maximum value of retries.

FixedTaskExecutionBackOff

public FixedTaskExecutionBackOff(long interval,
 int maxRetries)

Create an instance.

Parameters:

interval - the delay between two attempts.

maxRetries - the maximum number of retries.

Method Details

getInterval

public long getInterval()

Return the delay between two attempts in milliseconds.

Returns:

the configured interval in milliseconds.

setInterval

public void setInterval(long interval)

Set the delay between two attempts in milliseconds.

Parameters:

interval - delay between two attempts.

getMaxRetries

public int getMaxRetries()

Return the maximum number of retries.

Returns:

max retires

setMaxRetries

public void setMaxRetries(int maxRetries)

Set the maximum number of retries

Parameters:

maxRetries - max number of retires

nextBackOff

public long nextBackOff(Object message,
 RqueueMessage rqueueMessage,
 int failureCount)

Description copied from interface: TaskExecutionBackOff

Return the number of milliseconds to wait for the same message to be consumed by other consumers. (-1L) to indicate that no further enqueue should be made for the message.

Specified by:

nextBackOff in interface TaskExecutionBackOff

Parameters:

message - message that's fetched

rqueueMessage - raw message

failureCount - number of times this message has failed.

Returns:

backoff in the millisecond.

getMaxRetries

protected int getMaxRetries(Object message,
 RqueueMessage rqueueMessage,
 int failureCount)

getInterval

protected long getInterval(Object message,
 RqueueMessage rqueueMessage,
 int failureCount)

equals

public boolean equals(Object other)

Overrides:

equals in class Object