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/**
 * Copyright (c) 2012-2014, jcabi.com
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met: 1) Redistributions of source code must retain the above
 * copyright notice, this list of conditions and the following
 * disclaimer. 2) Redistributions in binary form must reproduce the above
 * copyright notice, this list of conditions and the following
 * disclaimer in the documentation and/or other materials provided
 * with the distribution. 3) Neither the name of the jcabi.com nor
 * the names of its contributors may be used to endorse or promote
 * products derived from this software without specific prior written
 * permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT
 * NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
 * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
 * THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
 * OF THE POSSIBILITY OF SUCH DAMAGE.
 */
package com.jcabi.aspects;

import java.lang.annotation.Documented;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
import java.util.concurrent.TimeUnit;

/**
 * Retry the method in case of exception.
 *
 * 

For example, this {@code load()} method will retry to load the URL * content if it fails at the first attempts: * *

 @RetryOnFailure(attempts = 2)
 * String load(URL url) throws IOException {
 *   return url.getContent().toString();
 * }
* * @author Yegor Bugayenko ([email protected]) * @version $Id$ * @since 0.1.10 * @see http://www.jcabi.com/jcabi-aspects/ */ @Documented @Retention(RetentionPolicy.RUNTIME) @Target(ElementType.METHOD) public @interface RetryOnFailure { /** * How many times to retry. * @checkstyle MagicNumber (2 lines) */ int attempts() default 3; /** * Delay between attempts, in time units. * @checkstyle MagicNumber (2 lines) */ long delay() default 50; /** * Time units. */ TimeUnit unit() default TimeUnit.MILLISECONDS; /** * When to retry (in case of what exception types). */ Class[] types() default { Throwable.class }; /** * Shall it be fully verbose (show full exception trace) or just * exception message? */ boolean verbose() default true; /** * Shall the time between retries by randomized. */ boolean randomize() default true; }




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