Package com.atlassian.bamboo.utils

Class InvocationLimiter<T>

java.lang.Object

com.atlassian.bamboo.utils.InvocationLimiter<T>

Type Parameters:

T - result type

@ThreadSafe
public class InvocationLimiter<T>
extends Object

Limits number of invocations of some resource. Limit is enforced per an arbitrary resource key.

Concurrent access to the same resource is allowed. In case of reaching the limit of invocation in a period of time, the result will contain information when the next invocation can be performed for this resource.

See Also:

• InvocationLimiterResponse

Constructor Summary

Constructors

Constructor	Description
InvocationLimiter(int invocationLimit, int invocationLimitUnitCount, @NotNull TimeUnit invocationLimitUnit)

Method Summary

Modifier and Type	Method	Description
<V> @NotNull InvocationLimiterResponse<V>	invoke(T resource, @NotNull Supplier<V> invocation)	Try to invoke a given resource.
void	resetSettings(int limit, int invocationLimitUnitCount, @NotNull TimeUnit invocationLimitUnit)	Resets settings for limiter, removes all data about past invocation and start counting invocation from 0.

Methods inherited from class java.lang.Object

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

Constructor Details

InvocationLimiter

public InvocationLimiter(int invocationLimit,
 int invocationLimitUnitCount,
 @NotNull
 @NotNull TimeUnit invocationLimitUnit)

Method Details

invoke

@NotNull
public <V> @NotNull InvocationLimiterResponse<V> invoke(@NotNull
 T resource,
 @NotNull
 @NotNull Supplier<V> invocation)

Try to invoke a given resource. In case of reaching the maximum number of calls, the response will contain information when the next call can be done.

Type Parameters:

V - type of response

Parameters:

resource - key of the resource for which to measure invocations

invocation - action which should be invoked

Returns:

wrapper with information if invocation has been performed or rejected

resetSettings

public void resetSettings(int limit,
 int invocationLimitUnitCount,
 @NotNull
 @NotNull TimeUnit invocationLimitUnit)

Resets settings for limiter, removes all data about past invocation and start counting invocation from 0.

Parameters:

limit - new limit

invocationLimitUnitCount - new limit unit count

invocationLimitUnit - new limit unit