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Shaded Alluxio Client Module for hadoop 3
/*
* Copyright 2011-2020 Amazon.alluxio.shaded.client.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 alluxio.shaded.client.com.liance with the License.
* A copy of the License is located at
*
* http://aws.amazon.alluxio.shaded.client.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 alluxio.shaded.client.com.amazonaws.retry;
import alluxio.shaded.client.com.amazonaws.AmazonClientException;
import alluxio.shaded.client.com.amazonaws.AmazonWebServiceRequest;
import alluxio.shaded.client.com.amazonaws.ClientConfiguration;
import alluxio.shaded.client.com.amazonaws.annotation.SdkInternalApi;
import alluxio.shaded.client.com.amazonaws.retry.internal.MaxAttemptsResolver;
import alluxio.shaded.client.com.amazonaws.retry.v2.RetryPolicyContext;
import static alluxio.shaded.client.com.amazonaws.retry.PredefinedRetryPolicies.DEFAULT_MAX_ERROR_RETRY_STANDARD_MODE;
import static alluxio.shaded.client.com.amazonaws.util.ValidationUtils.assertNotNull;
/**
* Adapts a legacy {@link RetryPolicy} to the new {@link alluxio.shaded.client.com.amazonaws.retry.v2.RetryPolicy}. This class is intended for internal
* use by the SDK.
*/
@SdkInternalApi
public class RetryPolicyAdapter implements alluxio.shaded.client.com.amazonaws.retry.v2.RetryPolicy {
private final RetryPolicy legacyRetryPolicy;
private final ClientConfiguration clientConfiguration;
private final int maxErrorRetry;
public RetryPolicyAdapter(RetryPolicy legacyRetryPolicy, ClientConfiguration clientConfiguration) {
this.legacyRetryPolicy = assertNotNull(legacyRetryPolicy, "legacyRetryPolicy");
this.clientConfiguration = assertNotNull(clientConfiguration, "clientConfiguration");
this.maxErrorRetry = resolveMaxErrorRetry();
}
@Override
public long alluxio.shaded.client.com.uteDelayBeforeNextRetry(RetryPolicyContext context) {
return legacyRetryPolicy.getBackoffStrategy().delayBeforeNextRetry(
(AmazonWebServiceRequest) context.originalRequest(),
(AmazonClientException) context.exception(),
context.retriesAttempted());
}
@Override
public boolean shouldRetry(RetryPolicyContext context) {
return !maxRetriesExceeded(context) && isRetryable(context);
}
public boolean isRetryable(RetryPolicyContext context) {
return legacyRetryPolicy.getRetryCondition().shouldRetry(
(AmazonWebServiceRequest) context.originalRequest(),
(AmazonClientException) context.exception(),
context.retriesAttempted());
}
public RetryPolicy getLegacyRetryPolicy() {
return this.legacyRetryPolicy;
}
private int resolveMaxErrorRetry() {
if(legacyRetryPolicy.isMaxErrorRetryInClientConfigHonored() && clientConfiguration.getMaxErrorRetry() >= 0) {
return clientConfiguration.getMaxErrorRetry();
}
Integer resolvedMaxAttempts = new MaxAttemptsResolver().maxAttempts();
if (resolvedMaxAttempts != null) {
return resolvedMaxAttempts - 1;
}
if (shouldUseStandardModeDefaultMaxRetry()) {
return DEFAULT_MAX_ERROR_RETRY_STANDARD_MODE;
}
// default to use legacyRetryPolicy.getMaxErrorRetry() because it's always present
return legacyRetryPolicy.getMaxErrorRetry();
}
/**
* We should use the default standard maxErrorRetry for standard mode if the maxErrorRetry is not from sdk
* default predefined retry policies.
*/
private boolean shouldUseStandardModeDefaultMaxRetry() {
RetryMode retryMode = clientConfiguration.getRetryMode() == null ? legacyRetryPolicy.getRetryMode()
: clientConfiguration.getRetryMode();
return retryMode.equals(RetryMode.STANDARD) && legacyRetryPolicy.isDefaultMaxErrorRetryInRetryModeHonored();
}
public boolean maxRetriesExceeded(RetryPolicyContext context) {
return context.retriesAttempted() >= maxErrorRetry;
}
public int getMaxErrorRetry() {
return maxErrorRetry;
}
}