software.amazon.awssdk.testutils.retry.RetryRule Maven / Gradle / Ivy
/*
* Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License").
* You may not use this file except in compliance with the License.
* A copy of the License is located at
*
* http://aws.amazon.com/apache2.0
*
* or in the "license" file accompanying this file. This file 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.
*/
package software.amazon.awssdk.testutils.retry;
import java.util.concurrent.TimeUnit;
import org.junit.rules.TestRule;
import org.junit.runner.Description;
import org.junit.runners.model.Statement;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import software.amazon.awssdk.utils.Validate;
public class RetryRule implements TestRule {
private static final Logger log = LoggerFactory.getLogger(RetryRule.class);
private int maxRetryAttempts;
private long delay;
private TimeUnit timeUnit;
public RetryRule(int maxRetryAttempts) {
this(maxRetryAttempts, 0, TimeUnit.SECONDS);
}
public RetryRule(int maxRetryAttempts, long delay, TimeUnit timeUnit) {
this.maxRetryAttempts = maxRetryAttempts;
this.delay = delay;
this.timeUnit = Validate.paramNotNull(timeUnit, "timeUnit");
}
@Override
public Statement apply(final Statement base, Description description) {
return new Statement() {
@Override
public void evaluate() throws Throwable {
retry(base, 1);
}
void retry(final Statement base, int attempts) throws Throwable {
try {
base.evaluate();
} catch (Exception e) {
if (attempts > maxRetryAttempts) {
throw e;
}
log.warn("Test failed. Retrying with delay of: {} {}", delay, timeUnit);
timeUnit.sleep(delay);
retry(base, ++attempts);
}
}
};
}
}