| /* |
| * Copyright 2011-2018 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. |
| * You may obtain a copy of the License at: |
| * |
| * http://aws.amazon.com/apache2.0 |
| * |
| * 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 com.amazonaws.auth; |
| |
| import java.io.IOException; |
| |
| import com.amazonaws.annotation.SdkInternalApi; |
| import com.amazonaws.retry.internal.CredentialsEndpointRetryParameters; |
| import com.amazonaws.retry.internal.CredentialsEndpointRetryPolicy; |
| |
| @SdkInternalApi |
| class ContainerCredentialsRetryPolicy implements CredentialsEndpointRetryPolicy { |
| |
| /** Max number of times a request is retried before failing. */ |
| private static final int MAX_RETRIES = 5; |
| |
| private static ContainerCredentialsRetryPolicy instance; |
| |
| private ContainerCredentialsRetryPolicy() { |
| |
| } |
| |
| public static ContainerCredentialsRetryPolicy getInstance() { |
| if (instance == null) { |
| instance = new ContainerCredentialsRetryPolicy(); |
| } |
| return instance; |
| } |
| |
| @Override |
| public boolean shouldRetry(int retriesAttempted, CredentialsEndpointRetryParameters retryParams) { |
| if (retriesAttempted >= MAX_RETRIES) { |
| return false; |
| } |
| |
| Integer statusCode = retryParams.getStatusCode(); |
| if (statusCode != null && statusCode >= 500 && statusCode < 600) { |
| return true; |
| } |
| |
| if (retryParams.getException() != null && retryParams.getException() instanceof IOException) { |
| return true; |
| } |
| |
| return false; |
| } |
| |
| } |