/
ConfigureRetries.java
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/
ConfigureRetries.java
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/*
* Copyright 2021 Google LLC
*
* 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.
*/
package com.example.storage;
// [START storage_configure_retries]
import com.google.api.gax.retrying.RetrySettings;
import com.google.cloud.storage.BlobId;
import com.google.cloud.storage.Storage;
import com.google.cloud.storage.StorageOptions;
import com.google.cloud.storage.StorageRetryStrategy;
import org.threeten.bp.Duration;
public final class ConfigureRetries {
public static void main(String[] args) {
String bucketName = "my-bucket";
String blobName = "blob/to/delete";
deleteBlob(bucketName, blobName);
}
static void deleteBlob(String bucketName, String blobName) {
// Customize retry behavior
RetrySettings retrySettings =
StorageOptions.getDefaultRetrySettings()
.toBuilder()
// Set the max number of attempts to 10 (initial attempt plus 9 retries)
.setMaxAttempts(10)
// Set the backoff multiplier to 3.0
.setRetryDelayMultiplier(3.0)
// Set the max duration of all attempts to 5 minutes
.setTotalTimeout(Duration.ofMinutes(5))
.build();
StorageOptions alwaysRetryStorageOptions =
StorageOptions.newBuilder()
// Customize retry so all requests are retried even if they are non-idempotent.
.setStorageRetryStrategy(StorageRetryStrategy.getUniformStorageRetryStrategy())
// provide the previously configured retrySettings
.setRetrySettings(retrySettings)
.build();
// Instantiate a client
Storage storage = alwaysRetryStorageOptions.getService();
// Delete the blob
BlobId blobId = BlobId.of(bucketName, blobName);
boolean success = storage.delete(blobId);
System.out.printf(
"Deletion of Blob %s completed %s.%n", blobId, success ? "successfully" : "unsuccessfully");
}
}
// [END storage_configure_retries]