Record Class RetryPolicy

java.lang.Object

java.lang.Record

io.leandev.appfuse.notification.outbox.RetryPolicy

Record Components:

maxAttempts - 遞送嘗試上限(須 ≥ 1)

baseBackoffSeconds - 退避基數秒(須 ≥ 0)

maxBackoffSeconds - 退避秒數上限(須 ≥ baseBackoffSeconds)

public record RetryPolicy(int maxAttempts, long baseBackoffSeconds, long maxBackoffSeconds)
extends Record

單一通知型別的重試政策

描述某 type 的 Outbox 列遞送失敗時的重試行為:

• maxAttempts：嘗試上限,逾此由 NotificationOutboxBase.recordFailure(String, Instant) 轉 DEAD。 由 NotificationService 在建列時寫入 NotificationOutbox.maxAttempts(per-row)。
• baseBackoffSeconds / maxBackoffSeconds：指數退避參數,由 NotificationOutboxDispatcher 計算 nextAttemptAt(第 n 次失敗後等 base × 2ⁿ 秒,上限 max)。

兩個消費者各讀不同欄位:service 只讀 maxAttempts、dispatcher 只讀 backoff。 兩者經同一 RetryPolicyResolver(by type)取得本政策,故同型別的重試上限與退避一致。

Since:

4.0.0

Constructor Summary

Constructors

Constructor	Description
RetryPolicy(int maxAttempts, long baseBackoffSeconds, long maxBackoffSeconds)	Creates an instance of a RetryPolicy record class.

Method Summary

Modifier and Type	Method	Description
long	baseBackoffSeconds()	Returns the value of the baseBackoffSeconds record component.
final boolean	equals(Object o)	Indicates whether some other object is "equal to" this one.
final int	hashCode()	Returns a hash code value for this object.
int	maxAttempts()	Returns the value of the maxAttempts record component.
long	maxBackoffSeconds()	Returns the value of the maxBackoffSeconds record component.
final String	toString()	Returns a string representation of this record class.

Methods inherited from class Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Details

RetryPolicy

public RetryPolicy(int maxAttempts,
 long baseBackoffSeconds,
 long maxBackoffSeconds)

Creates an instance of a RetryPolicy record class.

Parameters:

maxAttempts - the value for the maxAttempts record component

baseBackoffSeconds - the value for the baseBackoffSeconds record component

maxBackoffSeconds - the value for the maxBackoffSeconds record component

Method Details

toString

public final String toString()

Returns a string representation of this record class. The representation contains the name of the class, followed by the name and value of each of the record components.

Specified by:

toString in class Record

Returns:

a string representation of this object

hashCode

public final int hashCode()

Returns a hash code value for this object. The value is derived from the hash code of each of the record components.

Specified by:

hashCode in class Record

Returns:

a hash code value for this object

equals

public final boolean equals(Object o)

Indicates whether some other object is "equal to" this one. The objects are equal if the other object is of the same class and if all the record components are equal. All components in this record class are compared with the compare method from their corresponding wrapper classes.

Specified by:

equals in class Record

Parameters:

o - the object with which to compare

Returns:

true if this object is the same as the o argument; false otherwise.

maxAttempts

public int maxAttempts()

Returns the value of the maxAttempts record component.

Returns:

the value of the maxAttempts record component

baseBackoffSeconds

public long baseBackoffSeconds()

Returns the value of the baseBackoffSeconds record component.

Returns:

the value of the baseBackoffSeconds record component

maxBackoffSeconds

public long maxBackoffSeconds()

Returns the value of the maxBackoffSeconds record component.

Returns:

the value of the maxBackoffSeconds record component