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OnEvent.java
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56 lines (50 loc) · 1.97 KB
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package act.event;
/*-
* #%L
* ACT Framework
* %%
* Copyright (C) 2014 - 2017 ActFramework
* %%
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
* #L%
*/
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
/**
* Mark a method to be an adhoc event handler for a certain event type
* The event type is inferred from the method signature
*/
@Retention(RetentionPolicy.CLASS)
@Target(ElementType.METHOD)
public @interface OnEvent {
/**
* <p>Indicate if the handler should be run synchronously with application
* or asynchronously.</p>
* <p>Running job synchronously means the application
* will not start servicing incoming requests until the job is finished.</p>
* <p>Running job asynchronously means the job will start in a separate thread
* and will not block the app from servicing incoming requests</p>
* @return {@code true} if the annotated method shall be executed asynchronously
* or {@code false} if the method all be executed synchronously
*/
boolean async() default false;
/**
* When specified as `true` then this is to handle event that triggered before
* application get started and it shall get hooked immediately after classes has
* been loaded
* @return `true` if the event handler needs to be registered early before app started
*/
boolean beforeAppStart() default false;
}