Class StorageClient (2.10.0)

Service Description: ## API Overview and Naming Syntax

The Cloud Storage gRPC API allows applications to read and write data through the abstractions of buckets and objects. For a description of these abstractions please see https://cloud.google.com/storage/docs.

Resources are named as follows: - Projects are referred to as they are defined by the Resource Manager API, using strings like projects/123456 or projects/my-string-id. - Buckets are named using string names of the form: projects/{project}/buckets/{bucket} For globally unique buckets, _ may be substituted for the project. - Objects are uniquely identified by their name along with the name of the bucket they belong to, as separate strings in this API. For example:

ReadObjectRequest { bucket: 'projects/_/buckets/my-bucket' object: 'my-object' } Note that object names can contain / characters, which are treated as any other character (no special directory semantics).

This class provides the ability to make remote calls to the backing service through method calls that map to API methods. Sample code to get started:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   BucketName name = BucketName.of("[PROJECT]", "[BUCKET]");
   storageClient.deleteBucket(name);
 }
 

Note: close() needs to be called on the StorageClient object to clean up resources such as threads. In the example above, try-with-resources is used, which automatically calls close().

The surface of this class includes several types of Java methods for each of the API's methods:

1. A "flattened" method. With this type of method, the fields of the request type have been converted into function parameters. It may be the case that not all fields are available as parameters, and not every API method will have a flattened method entry point.
2. A "request object" method. This type of method only takes one parameter, a request object, which must be constructed before the call. Not every API method will have a request object method.
3. A "callable" method. This type of method takes no parameters and returns an immutable API callable object, which can be used to initiate calls to the service.

See the individual methods for example code.

Many parameters require resource names to be formatted in a particular way. To assist with these names, this class includes a format method for each type of name, and additionally a parse method to extract the individual identifiers contained within names that are returned.

This class can be customized by passing in a custom instance of StorageSettings to create(). For example:

To customize credentials:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 StorageSettings storageSettings =
     StorageSettings.newBuilder()
         .setCredentialsProvider(FixedCredentialsProvider.create(myCredentials))
         .build();
 StorageClient storageClient = StorageClient.create(storageSettings);
 

To customize the endpoint:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 StorageSettings storageSettings = StorageSettings.newBuilder().setEndpoint(myEndpoint).build();
 StorageClient storageClient = StorageClient.create(storageSettings);
 

To use REST (HTTP1.1/JSON) transport (instead of gRPC) for sending and receiving requests over the wire:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 StorageSettings storageSettings =
     StorageSettings.newBuilder()
         .setTransportChannelProvider(
             StorageSettings.defaultHttpJsonTransportProviderBuilder().build())
         .build();
 StorageClient storageClient = StorageClient.create(storageSettings);
 

Please refer to the GitHub repository's samples for more quickstart code snippets.

Constructs an instance of StorageClient with default settings.

Constructs an instance of StorageClient, using the given settings. The channels are created based on the settings passed in, or defaults for any settings that are not set.

Constructs an instance of StorageClient, using the given stub for making calls. This is for advanced usage - prefer using create(StorageSettings).

Constructs an instance of StorageClient, using the given settings. This is protected so that it is easy to make a subclass, but otherwise, the static factory methods should be preferred.

Concatenates a list of existing objects into a new object in the same bucket.

Sample code:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   ComposeObjectRequest request =
       ComposeObjectRequest.newBuilder()
           .setDestination(Object.newBuilder().build())
           .addAllSourceObjects(new ArrayList<ComposeObjectRequest.SourceObject>())
           .setDestinationPredefinedAcl("destinationPredefinedAcl1111125814")
           .setIfGenerationMatch(-1086241088)
           .setIfMetagenerationMatch(1043427781)
           .setKmsKey(
               CryptoKeyName.of("[PROJECT]", "[LOCATION]", "[KEY_RING]", "[CRYPTO_KEY]")
                   .toString())
           .setCommonObjectRequestParams(CommonObjectRequestParams.newBuilder().build())
           .build();
   Object response = storageClient.composeObject(request);
 }
 

Concatenates a list of existing objects into a new object in the same bucket.

Sample code:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   ComposeObjectRequest request =
       ComposeObjectRequest.newBuilder()
           .setDestination(Object.newBuilder().build())
           .addAllSourceObjects(new ArrayList<ComposeObjectRequest.SourceObject>())
           .setDestinationPredefinedAcl("destinationPredefinedAcl1111125814")
           .setIfGenerationMatch(-1086241088)
           .setIfMetagenerationMatch(1043427781)
           .setKmsKey(
               CryptoKeyName.of("[PROJECT]", "[LOCATION]", "[KEY_RING]", "[CRYPTO_KEY]")
                   .toString())
           .setCommonObjectRequestParams(CommonObjectRequestParams.newBuilder().build())
           .build();
   ApiFuture<Object> future = storageClient.composeObjectCallable().futureCall(request);
   // Do something.
   Object response = future.get();
 }
 

Creates a new bucket.

Sample code:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   CreateBucketRequest request =
       CreateBucketRequest.newBuilder()
           .setParent(ProjectName.of("[PROJECT]").toString())
           .setBucket(Bucket.newBuilder().build())
           .setBucketId("bucketId-1603305307")
           .setPredefinedAcl("predefinedAcl1207041188")
           .setPredefinedDefaultObjectAcl("predefinedDefaultObjectAcl2109168048")
           .build();
   Bucket response = storageClient.createBucket(request);
 }
 

Creates a new bucket.

Sample code:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   ProjectName parent = ProjectName.of("[PROJECT]");
   Bucket bucket = Bucket.newBuilder().build();
   String bucketId = "bucketId-1603305307";
   Bucket response = storageClient.createBucket(parent, bucket, bucketId);
 }
 

Creates a new bucket.

Sample code:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   String parent = ProjectName.of("[PROJECT]").toString();
   Bucket bucket = Bucket.newBuilder().build();
   String bucketId = "bucketId-1603305307";
   Bucket response = storageClient.createBucket(parent, bucket, bucketId);
 }
 

Creates a new bucket.

Sample code:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   CreateBucketRequest request =
       CreateBucketRequest.newBuilder()
           .setParent(ProjectName.of("[PROJECT]").toString())
           .setBucket(Bucket.newBuilder().build())
           .setBucketId("bucketId-1603305307")
           .setPredefinedAcl("predefinedAcl1207041188")
           .setPredefinedDefaultObjectAcl("predefinedDefaultObjectAcl2109168048")
           .build();
   ApiFuture<Bucket> future = storageClient.createBucketCallable().futureCall(request);
   // Do something.
   Bucket response = future.get();
 }
 

Creates a new HMAC key for the given service account.

Sample code:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   CreateHmacKeyRequest request =
       CreateHmacKeyRequest.newBuilder()
           .setProject(ProjectName.of("[PROJECT]").toString())
           .setServiceAccountEmail("serviceAccountEmail1825953988")
           .build();
   CreateHmacKeyResponse response = storageClient.createHmacKey(request);
 }
 

Creates a new HMAC key for the given service account.

Sample code:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   ProjectName project = ProjectName.of("[PROJECT]");
   String serviceAccountEmail = "serviceAccountEmail1825953988";
   CreateHmacKeyResponse response = storageClient.createHmacKey(project, serviceAccountEmail);
 }
 

Creates a new HMAC key for the given service account.

Sample code:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   String project = ProjectName.of("[PROJECT]").toString();
   String serviceAccountEmail = "serviceAccountEmail1825953988";
   CreateHmacKeyResponse response = storageClient.createHmacKey(project, serviceAccountEmail);
 }
 

Creates a new HMAC key for the given service account.

Sample code:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   CreateHmacKeyRequest request =
       CreateHmacKeyRequest.newBuilder()
           .setProject(ProjectName.of("[PROJECT]").toString())
           .setServiceAccountEmail("serviceAccountEmail1825953988")
           .build();
   ApiFuture<CreateHmacKeyResponse> future =
       storageClient.createHmacKeyCallable().futureCall(request);
   // Do something.
   CreateHmacKeyResponse response = future.get();
 }
 

Creates a notification subscription for a given bucket. These notifications, when triggered, publish messages to the specified Pub/Sub topics. See https://cloud.google.com/storage/docs/pubsub-notifications.

Sample code:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   CreateNotificationRequest request =
       CreateNotificationRequest.newBuilder()
           .setParent(ProjectName.of("[PROJECT]").toString())
           .setNotification(Notification.newBuilder().build())
           .build();
   Notification response = storageClient.createNotification(request);
 }
 

Creates a notification subscription for a given bucket. These notifications, when triggered, publish messages to the specified Pub/Sub topics. See https://cloud.google.com/storage/docs/pubsub-notifications.

Sample code:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   ProjectName parent = ProjectName.of("[PROJECT]");
   Notification notification = Notification.newBuilder().build();
   Notification response = storageClient.createNotification(parent, notification);
 }
 

Creates a notification subscription for a given bucket. These notifications, when triggered, publish messages to the specified Pub/Sub topics. See https://cloud.google.com/storage/docs/pubsub-notifications.

Sample code:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   String parent = ProjectName.of("[PROJECT]").toString();
   Notification notification = Notification.newBuilder().build();
   Notification response = storageClient.createNotification(parent, notification);
 }
 

Creates a notification subscription for a given bucket. These notifications, when triggered, publish messages to the specified Pub/Sub topics. See https://cloud.google.com/storage/docs/pubsub-notifications.

Sample code:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   CreateNotificationRequest request =
       CreateNotificationRequest.newBuilder()
           .setParent(ProjectName.of("[PROJECT]").toString())
           .setNotification(Notification.newBuilder().build())
           .build();
   ApiFuture<Notification> future =
       storageClient.createNotificationCallable().futureCall(request);
   // Do something.
   Notification response = future.get();
 }
 

Permanently deletes an empty bucket.

Sample code:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   BucketName name = BucketName.of("[PROJECT]", "[BUCKET]");
   storageClient.deleteBucket(name);
 }
 

Permanently deletes an empty bucket.

Sample code:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   DeleteBucketRequest request =
       DeleteBucketRequest.newBuilder()
           .setName(BucketName.of("[PROJECT]", "[BUCKET]").toString())
           .setIfMetagenerationMatch(1043427781)
           .setIfMetagenerationNotMatch(1025430873)
           .build();
   storageClient.deleteBucket(request);
 }
 

Permanently deletes an empty bucket.

Sample code:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   String name = BucketName.of("[PROJECT]", "[BUCKET]").toString();
   storageClient.deleteBucket(name);
 }
 

Permanently deletes an empty bucket.

Sample code:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   DeleteBucketRequest request =
       DeleteBucketRequest.newBuilder()
           .setName(BucketName.of("[PROJECT]", "[BUCKET]").toString())
           .setIfMetagenerationMatch(1043427781)
           .setIfMetagenerationNotMatch(1025430873)
           .build();
   ApiFuture<Empty> future = storageClient.deleteBucketCallable().futureCall(request);
   // Do something.
   future.get();
 }
 

Deletes a given HMAC key. Key must be in an INACTIVE state.

Sample code:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   DeleteHmacKeyRequest request =
       DeleteHmacKeyRequest.newBuilder()
           .setAccessId("accessId-2146437729")
           .setProject(ProjectName.of("[PROJECT]").toString())
           .build();
   storageClient.deleteHmacKey(request);
 }
 

Deletes a given HMAC key. Key must be in an INACTIVE state.

Sample code:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   String accessId = "accessId-2146437729";
   ProjectName project = ProjectName.of("[PROJECT]");
   storageClient.deleteHmacKey(accessId, project);
 }
 

Deletes a given HMAC key. Key must be in an INACTIVE state.

Sample code:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   String accessId = "accessId-2146437729";
   String project = ProjectName.of("[PROJECT]").toString();
   storageClient.deleteHmacKey(accessId, project);
 }
 

Deletes a given HMAC key. Key must be in an INACTIVE state.

Sample code:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   DeleteHmacKeyRequest request =
       DeleteHmacKeyRequest.newBuilder()
           .setAccessId("accessId-2146437729")
           .setProject(ProjectName.of("[PROJECT]").toString())
           .build();
   ApiFuture<Empty> future = storageClient.deleteHmacKeyCallable().futureCall(request);
   // Do something.
   future.get();
 }
 

Permanently deletes a notification subscription.

Sample code:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   DeleteNotificationRequest request =
       DeleteNotificationRequest.newBuilder()
           .setName(NotificationName.of("[PROJECT]", "[BUCKET]", "[NOTIFICATION]").toString())
           .build();
   storageClient.deleteNotification(request);
 }
 

Permanently deletes a notification subscription.

Sample code:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   NotificationName name = NotificationName.of("[PROJECT]", "[BUCKET]", "[NOTIFICATION]");
   storageClient.deleteNotification(name);
 }
 

Permanently deletes a notification subscription.

Sample code:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   String name = NotificationName.of("[PROJECT]", "[BUCKET]", "[NOTIFICATION]").toString();
   storageClient.deleteNotification(name);
 }
 

Permanently deletes a notification subscription.

Sample code:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   DeleteNotificationRequest request =
       DeleteNotificationRequest.newBuilder()
           .setName(NotificationName.of("[PROJECT]", "[BUCKET]", "[NOTIFICATION]").toString())
           .build();
   ApiFuture<Empty> future = storageClient.deleteNotificationCallable().futureCall(request);
   // Do something.
   future.get();
 }
 

Deletes an object and its metadata. Deletions are permanent if versioning is not enabled for the bucket, or if the generation parameter is used.

Sample code:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   DeleteObjectRequest request =
       DeleteObjectRequest.newBuilder()
           .setBucket("bucket-1378203158")
           .setObject("object-1023368385")
           .setUploadId("uploadId1563990780")
           .setGeneration(305703192)
           .setIfGenerationMatch(-1086241088)
           .setIfGenerationNotMatch(1475720404)
           .setIfMetagenerationMatch(1043427781)
           .setIfMetagenerationNotMatch(1025430873)
           .setCommonObjectRequestParams(CommonObjectRequestParams.newBuilder().build())
           .build();
   storageClient.deleteObject(request);
 }
 

Deletes an object and its metadata. Deletions are permanent if versioning is not enabled for the bucket, or if the generation parameter is used.

Sample code:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   String bucket = "bucket-1378203158";
   String object = "object-1023368385";
   storageClient.deleteObject(bucket, object);
 }
 

Deletes an object and its metadata. Deletions are permanent if versioning is not enabled for the bucket, or if the generation parameter is used.

Sample code:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   String bucket = "bucket-1378203158";
   String object = "object-1023368385";
   long generation = 305703192;
   storageClient.deleteObject(bucket, object, generation);
 }
 

Deletes an object and its metadata. Deletions are permanent if versioning is not enabled for the bucket, or if the generation parameter is used.

Sample code:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   DeleteObjectRequest request =
       DeleteObjectRequest.newBuilder()
           .setBucket("bucket-1378203158")
           .setObject("object-1023368385")
           .setUploadId("uploadId1563990780")
           .setGeneration(305703192)
           .setIfGenerationMatch(-1086241088)
           .setIfGenerationNotMatch(1475720404)
           .setIfMetagenerationMatch(1043427781)
           .setIfMetagenerationNotMatch(1025430873)
           .setCommonObjectRequestParams(CommonObjectRequestParams.newBuilder().build())
           .build();
   ApiFuture<Empty> future = storageClient.deleteObjectCallable().futureCall(request);
   // Do something.
   future.get();
 }
 

Returns metadata for the specified bucket.

Sample code:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   BucketName name = BucketName.of("[PROJECT]", "[BUCKET]");
   Bucket response = storageClient.getBucket(name);
 }
 

Returns metadata for the specified bucket.

Sample code:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   GetBucketRequest request =
       GetBucketRequest.newBuilder()
           .setName(BucketName.of("[PROJECT]", "[BUCKET]").toString())
           .setIfMetagenerationMatch(1043427781)
           .setIfMetagenerationNotMatch(1025430873)
           .setReadMask(FieldMask.newBuilder().build())
           .build();
   Bucket response = storageClient.getBucket(request);
 }
 

Returns metadata for the specified bucket.

Sample code:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   String name = BucketName.of("[PROJECT]", "[BUCKET]").toString();
   Bucket response = storageClient.getBucket(name);
 }
 

Returns metadata for the specified bucket.

Sample code:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   GetBucketRequest request =
       GetBucketRequest.newBuilder()
           .setName(BucketName.of("[PROJECT]", "[BUCKET]").toString())
           .setIfMetagenerationMatch(1043427781)
           .setIfMetagenerationNotMatch(1025430873)
           .setReadMask(FieldMask.newBuilder().build())
           .build();
   ApiFuture<Bucket> future = storageClient.getBucketCallable().futureCall(request);
   // Do something.
   Bucket response = future.get();
 }
 

Gets an existing HMAC key metadata for the given id.

Sample code:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   GetHmacKeyRequest request =
       GetHmacKeyRequest.newBuilder()
           .setAccessId("accessId-2146437729")
           .setProject(ProjectName.of("[PROJECT]").toString())
           .build();
   HmacKeyMetadata response = storageClient.getHmacKey(request);
 }
 

Gets an existing HMAC key metadata for the given id.

Sample code:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   String accessId = "accessId-2146437729";
   ProjectName project = ProjectName.of("[PROJECT]");
   HmacKeyMetadata response = storageClient.getHmacKey(accessId, project);
 }
 

Gets an existing HMAC key metadata for the given id.

Sample code:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   String accessId = "accessId-2146437729";
   String project = ProjectName.of("[PROJECT]").toString();
   HmacKeyMetadata response = storageClient.getHmacKey(accessId, project);
 }
 

Gets an existing HMAC key metadata for the given id.

Sample code:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   GetHmacKeyRequest request =
       GetHmacKeyRequest.newBuilder()
           .setAccessId("accessId-2146437729")
           .setProject(ProjectName.of("[PROJECT]").toString())
           .build();
   ApiFuture<HmacKeyMetadata> future = storageClient.getHmacKeyCallable().futureCall(request);
   // Do something.
   HmacKeyMetadata response = future.get();
 }
 

Gets the IAM policy for a specified bucket.

Sample code:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   ResourceName resource =
       CryptoKeyName.of("[PROJECT]", "[LOCATION]", "[KEY_RING]", "[CRYPTO_KEY]");
   Policy response = storageClient.getIamPolicy(resource);
 }
 

Gets the IAM policy for a specified bucket.

Sample code:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   GetIamPolicyRequest request =
       GetIamPolicyRequest.newBuilder()
           .setResource(
               CryptoKeyName.of("[PROJECT]", "[LOCATION]", "[KEY_RING]", "[CRYPTO_KEY]")
                   .toString())
           .setOptions(GetPolicyOptions.newBuilder().build())
           .build();
   Policy response = storageClient.getIamPolicy(request);
 }
 

Gets the IAM policy for a specified bucket.

Sample code:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   String resource =
       CryptoKeyName.of("[PROJECT]", "[LOCATION]", "[KEY_RING]", "[CRYPTO_KEY]").toString();
   Policy response = storageClient.getIamPolicy(resource);
 }
 

Gets the IAM policy for a specified bucket.

Sample code:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   GetIamPolicyRequest request =
       GetIamPolicyRequest.newBuilder()
           .setResource(
               CryptoKeyName.of("[PROJECT]", "[LOCATION]", "[KEY_RING]", "[CRYPTO_KEY]")
                   .toString())
           .setOptions(GetPolicyOptions.newBuilder().build())
           .build();
   ApiFuture<Policy> future = storageClient.getIamPolicyCallable().futureCall(request);
   // Do something.
   Policy response = future.get();
 }
 

View a notification config.

Sample code:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   BucketName name = BucketName.of("[PROJECT]", "[BUCKET]");
   Notification response = storageClient.getNotification(name);
 }
 

View a notification config.

Sample code:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   GetNotificationRequest request =
       GetNotificationRequest.newBuilder()
           .setName(BucketName.of("[PROJECT]", "[BUCKET]").toString())
           .build();
   Notification response = storageClient.getNotification(request);
 }
 

View a notification config.

Sample code:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   String name = BucketName.of("[PROJECT]", "[BUCKET]").toString();
   Notification response = storageClient.getNotification(name);
 }
 

View a notification config.

Sample code:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   GetNotificationRequest request =
       GetNotificationRequest.newBuilder()
           .setName(BucketName.of("[PROJECT]", "[BUCKET]").toString())
           .build();
   ApiFuture<Notification> future = storageClient.getNotificationCallable().futureCall(request);
   // Do something.
   Notification response = future.get();
 }
 

Retrieves an object's metadata.

Sample code:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   GetObjectRequest request =
       GetObjectRequest.newBuilder()
           .setBucket("bucket-1378203158")
           .setObject("object-1023368385")
           .setGeneration(305703192)
           .setIfGenerationMatch(-1086241088)
           .setIfGenerationNotMatch(1475720404)
           .setIfMetagenerationMatch(1043427781)
           .setIfMetagenerationNotMatch(1025430873)
           .setCommonObjectRequestParams(CommonObjectRequestParams.newBuilder().build())
           .setReadMask(FieldMask.newBuilder().build())
           .build();
   Object response = storageClient.getObject(request);
 }
 

Retrieves an object's metadata.

Sample code:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   String bucket = "bucket-1378203158";
   String object = "object-1023368385";
   Object response = storageClient.getObject(bucket, object);
 }
 

Retrieves an object's metadata.

Sample code:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   String bucket = "bucket-1378203158";
   String object = "object-1023368385";
   long generation = 305703192;
   Object response = storageClient.getObject(bucket, object, generation);
 }
 

Retrieves an object's metadata.

Sample code:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   GetObjectRequest request =
       GetObjectRequest.newBuilder()
           .setBucket("bucket-1378203158")
           .setObject("object-1023368385")
           .setGeneration(305703192)
           .setIfGenerationMatch(-1086241088)
           .setIfGenerationNotMatch(1475720404)
           .setIfMetagenerationMatch(1043427781)
           .setIfMetagenerationNotMatch(1025430873)
           .setCommonObjectRequestParams(CommonObjectRequestParams.newBuilder().build())
           .setReadMask(FieldMask.newBuilder().build())
           .build();
   ApiFuture<Object> future = storageClient.getObjectCallable().futureCall(request);
   // Do something.
   Object response = future.get();
 }
 

Retrieves the name of a project's Google Cloud Storage service account.

Sample code:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   GetServiceAccountRequest request =
       GetServiceAccountRequest.newBuilder()
           .setProject(ProjectName.of("[PROJECT]").toString())
           .build();
   ServiceAccount response = storageClient.getServiceAccount(request);
 }
 

Retrieves the name of a project's Google Cloud Storage service account.

Sample code:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   ProjectName project = ProjectName.of("[PROJECT]");
   ServiceAccount response = storageClient.getServiceAccount(project);
 }
 

Retrieves the name of a project's Google Cloud Storage service account.

Sample code:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   String project = ProjectName.of("[PROJECT]").toString();
   ServiceAccount response = storageClient.getServiceAccount(project);
 }
 

Retrieves the name of a project's Google Cloud Storage service account.

Sample code:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   GetServiceAccountRequest request =
       GetServiceAccountRequest.newBuilder()
           .setProject(ProjectName.of("[PROJECT]").toString())
           .build();
   ApiFuture<ServiceAccount> future =
       storageClient.getServiceAccountCallable().futureCall(request);
   // Do something.
   ServiceAccount response = future.get();
 }
 

Retrieves a list of buckets for a given project.

Sample code:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   ListBucketsRequest request =
       ListBucketsRequest.newBuilder()
           .setParent(ProjectName.of("[PROJECT]").toString())
           .setPageSize(883849137)
           .setPageToken("pageToken873572522")
           .setPrefix("prefix-980110702")
           .setReadMask(FieldMask.newBuilder().build())
           .build();
   for (Bucket element : storageClient.listBuckets(request).iterateAll()) {
     // doThingsWith(element);
   }
 }
 

Retrieves a list of buckets for a given project.

Sample code:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   ProjectName parent = ProjectName.of("[PROJECT]");
   for (Bucket element : storageClient.listBuckets(parent).iterateAll()) {
     // doThingsWith(element);
   }
 }
 

Retrieves a list of buckets for a given project.

Sample code:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   String parent = ProjectName.of("[PROJECT]").toString();
   for (Bucket element : storageClient.listBuckets(parent).iterateAll()) {
     // doThingsWith(element);
   }
 }
 

Retrieves a list of buckets for a given project.

Sample code:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   ListBucketsRequest request =
       ListBucketsRequest.newBuilder()
           .setParent(ProjectName.of("[PROJECT]").toString())
           .setPageSize(883849137)
           .setPageToken("pageToken873572522")
           .setPrefix("prefix-980110702")
           .setReadMask(FieldMask.newBuilder().build())
           .build();
   while (true) {
     ListBucketsResponse response = storageClient.listBucketsCallable().call(request);
     for (Bucket element : response.getBucketsList()) {
       // doThingsWith(element);
     }
     String nextPageToken = response.getNextPageToken();
     if (!Strings.isNullOrEmpty(nextPageToken)) {
       request = request.toBuilder().setPageToken(nextPageToken).build();
     } else {
       break;
     }
   }
 }
 

Retrieves a list of buckets for a given project.

Sample code:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   ListBucketsRequest request =
       ListBucketsRequest.newBuilder()
           .setParent(ProjectName.of("[PROJECT]").toString())
           .setPageSize(883849137)
           .setPageToken("pageToken873572522")
           .setPrefix("prefix-980110702")
           .setReadMask(FieldMask.newBuilder().build())
           .build();
   ApiFuture<Bucket> future = storageClient.listBucketsPagedCallable().futureCall(request);
   // Do something.
   for (Bucket element : future.get().iterateAll()) {
     // doThingsWith(element);
   }
 }
 

Lists HMAC keys under a given project with the additional filters provided.

Sample code:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   ListHmacKeysRequest request =
       ListHmacKeysRequest.newBuilder()
           .setProject(ProjectName.of("[PROJECT]").toString())
           .setPageSize(883849137)
           .setPageToken("pageToken873572522")
           .setServiceAccountEmail("serviceAccountEmail1825953988")
           .setShowDeletedKeys(true)
           .build();
   for (HmacKeyMetadata element : storageClient.listHmacKeys(request).iterateAll()) {
     // doThingsWith(element);
   }
 }
 

Lists HMAC keys under a given project with the additional filters provided.

Sample code:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   ProjectName project = ProjectName.of("[PROJECT]");
   for (HmacKeyMetadata element : storageClient.listHmacKeys(project).iterateAll()) {
     // doThingsWith(element);
   }
 }
 

Lists HMAC keys under a given project with the additional filters provided.

Sample code:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   String project = ProjectName.of("[PROJECT]").toString();
   for (HmacKeyMetadata element : storageClient.listHmacKeys(project).iterateAll()) {
     // doThingsWith(element);
   }
 }
 

Lists HMAC keys under a given project with the additional filters provided.

Sample code:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   ListHmacKeysRequest request =
       ListHmacKeysRequest.newBuilder()
           .setProject(ProjectName.of("[PROJECT]").toString())
           .setPageSize(883849137)
           .setPageToken("pageToken873572522")
           .setServiceAccountEmail("serviceAccountEmail1825953988")
           .setShowDeletedKeys(true)
           .build();
   while (true) {
     ListHmacKeysResponse response = storageClient.listHmacKeysCallable().call(request);
     for (HmacKeyMetadata element : response.getHmacKeysList()) {
       // doThingsWith(element);
     }
     String nextPageToken = response.getNextPageToken();
     if (!Strings.isNullOrEmpty(nextPageToken)) {
       request = request.toBuilder().setPageToken(nextPageToken).build();
     } else {
       break;
     }
   }
 }
 

Lists HMAC keys under a given project with the additional filters provided.

Sample code:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   ListHmacKeysRequest request =
       ListHmacKeysRequest.newBuilder()
           .setProject(ProjectName.of("[PROJECT]").toString())
           .setPageSize(883849137)
           .setPageToken("pageToken873572522")
           .setServiceAccountEmail("serviceAccountEmail1825953988")
           .setShowDeletedKeys(true)
           .build();
   ApiFuture<HmacKeyMetadata> future =
       storageClient.listHmacKeysPagedCallable().futureCall(request);
   // Do something.
   for (HmacKeyMetadata element : future.get().iterateAll()) {
     // doThingsWith(element);
   }
 }
 

Retrieves a list of notification subscriptions for a given bucket.

Sample code:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   ListNotificationsRequest request =
       ListNotificationsRequest.newBuilder()
           .setParent(ProjectName.of("[PROJECT]").toString())
           .setPageSize(883849137)
           .setPageToken("pageToken873572522")
           .build();
   for (Notification element : storageClient.listNotifications(request).iterateAll()) {
     // doThingsWith(element);
   }
 }
 

Retrieves a list of notification subscriptions for a given bucket.

Sample code:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   ProjectName parent = ProjectName.of("[PROJECT]");
   for (Notification element : storageClient.listNotifications(parent).iterateAll()) {
     // doThingsWith(element);
   }
 }
 

Retrieves a list of notification subscriptions for a given bucket.

Sample code:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   String parent = ProjectName.of("[PROJECT]").toString();
   for (Notification element : storageClient.listNotifications(parent).iterateAll()) {
     // doThingsWith(element);
   }
 }
 

Retrieves a list of notification subscriptions for a given bucket.

Sample code:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   ListNotificationsRequest request =
       ListNotificationsRequest.newBuilder()
           .setParent(ProjectName.of("[PROJECT]").toString())
           .setPageSize(883849137)
           .setPageToken("pageToken873572522")
           .build();
   while (true) {
     ListNotificationsResponse response =
         storageClient.listNotificationsCallable().call(request);
     for (Notification element : response.getNotificationsList()) {
       // doThingsWith(element);
     }
     String nextPageToken = response.getNextPageToken();
     if (!Strings.isNullOrEmpty(nextPageToken)) {
       request = request.toBuilder().setPageToken(nextPageToken).build();
     } else {
       break;
     }
   }
 }
 

Retrieves a list of notification subscriptions for a given bucket.

Sample code:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   ListNotificationsRequest request =
       ListNotificationsRequest.newBuilder()
           .setParent(ProjectName.of("[PROJECT]").toString())
           .setPageSize(883849137)
           .setPageToken("pageToken873572522")
           .build();
   ApiFuture<Notification> future =
       storageClient.listNotificationsPagedCallable().futureCall(request);
   // Do something.
   for (Notification element : future.get().iterateAll()) {
     // doThingsWith(element);
   }
 }
 

Retrieves a list of objects matching the criteria.

Sample code:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   ListObjectsRequest request =
       ListObjectsRequest.newBuilder()
           .setParent(ProjectName.of("[PROJECT]").toString())
           .setPageSize(883849137)
           .setPageToken("pageToken873572522")
           .setDelimiter("delimiter-250518009")
           .setIncludeTrailingDelimiter(true)
           .setPrefix("prefix-980110702")
           .setVersions(true)
           .setReadMask(FieldMask.newBuilder().build())
           .setLexicographicStart("lexicographicStart-2093413008")
           .setLexicographicEnd("lexicographicEnd1646968169")
           .build();
   for (Object element : storageClient.listObjects(request).iterateAll()) {
     // doThingsWith(element);
   }
 }
 

Retrieves a list of objects matching the criteria.

Sample code:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   ProjectName parent = ProjectName.of("[PROJECT]");
   for (Object element : storageClient.listObjects(parent).iterateAll()) {
     // doThingsWith(element);
   }
 }
 

Retrieves a list of objects matching the criteria.

Sample code:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   String parent = ProjectName.of("[PROJECT]").toString();
   for (Object element : storageClient.listObjects(parent).iterateAll()) {
     // doThingsWith(element);
   }
 }
 

Retrieves a list of objects matching the criteria.

Sample code:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   ListObjectsRequest request =
       ListObjectsRequest.newBuilder()
           .setParent(ProjectName.of("[PROJECT]").toString())
           .setPageSize(883849137)
           .setPageToken("pageToken873572522")
           .setDelimiter("delimiter-250518009")
           .setIncludeTrailingDelimiter(true)
           .setPrefix("prefix-980110702")
           .setVersions(true)
           .setReadMask(FieldMask.newBuilder().build())
           .setLexicographicStart("lexicographicStart-2093413008")
           .setLexicographicEnd("lexicographicEnd1646968169")
           .build();
   while (true) {
     ListObjectsResponse response = storageClient.listObjectsCallable().call(request);
     for (Object element : response.getObjectsList()) {
       // doThingsWith(element);
     }
     String nextPageToken = response.getNextPageToken();
     if (!Strings.isNullOrEmpty(nextPageToken)) {
       request = request.toBuilder().setPageToken(nextPageToken).build();
     } else {
       break;
     }
   }
 }
 

Retrieves a list of objects matching the criteria.

Sample code:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   ListObjectsRequest request =
       ListObjectsRequest.newBuilder()
           .setParent(ProjectName.of("[PROJECT]").toString())
           .setPageSize(883849137)
           .setPageToken("pageToken873572522")
           .setDelimiter("delimiter-250518009")
           .setIncludeTrailingDelimiter(true)
           .setPrefix("prefix-980110702")
           .setVersions(true)
           .setReadMask(FieldMask.newBuilder().build())
           .setLexicographicStart("lexicographicStart-2093413008")
           .setLexicographicEnd("lexicographicEnd1646968169")
           .build();
   ApiFuture<Object> future = storageClient.listObjectsPagedCallable().futureCall(request);
   // Do something.
   for (Object element : future.get().iterateAll()) {
     // doThingsWith(element);
   }
 }
 

Locks retention policy on a bucket.

Sample code:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   BucketName bucket = BucketName.of("[PROJECT]", "[BUCKET]");
   Bucket response = storageClient.lockBucketRetentionPolicy(bucket);
 }
 

Locks retention policy on a bucket.

Sample code:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   LockBucketRetentionPolicyRequest request =
       LockBucketRetentionPolicyRequest.newBuilder()
           .setBucket(BucketName.of("[PROJECT]", "[BUCKET]").toString())
           .setIfMetagenerationMatch(1043427781)
           .build();
   Bucket response = storageClient.lockBucketRetentionPolicy(request);
 }
 

Locks retention policy on a bucket.

Sample code:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   String bucket = BucketName.of("[PROJECT]", "[BUCKET]").toString();
   Bucket response = storageClient.lockBucketRetentionPolicy(bucket);
 }
 

Locks retention policy on a bucket.

Sample code:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   LockBucketRetentionPolicyRequest request =
       LockBucketRetentionPolicyRequest.newBuilder()
           .setBucket(BucketName.of("[PROJECT]", "[BUCKET]").toString())
           .setIfMetagenerationMatch(1043427781)
           .build();
   ApiFuture<Bucket> future =
       storageClient.lockBucketRetentionPolicyCallable().futureCall(request);
   // Do something.
   Bucket response = future.get();
 }
 

Determines the persisted_size for an object that is being written, which can then be used as the write_offset for the next Write() call.

If the object does not exist (i.e., the object has been deleted, or the first Write() has not yet reached the service), this method returns the error NOT_FOUND.

The client **may** call QueryWriteStatus() at any time to determine how much data has been processed for this object. This is useful if the client is buffering data and needs to know which data can be safely evicted. For any sequence of QueryWriteStatus() calls for a given object name, the sequence of returned persisted_size values will be non-decreasing.

Sample code:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   QueryWriteStatusRequest request =
       QueryWriteStatusRequest.newBuilder()
           .setUploadId("uploadId1563990780")
           .setCommonObjectRequestParams(CommonObjectRequestParams.newBuilder().build())
           .build();
   QueryWriteStatusResponse response = storageClient.queryWriteStatus(request);
 }
 

Determines the persisted_size for an object that is being written, which can then be used as the write_offset for the next Write() call.

If the object does not exist (i.e., the object has been deleted, or the first Write() has not yet reached the service), this method returns the error NOT_FOUND.

The client **may** call QueryWriteStatus() at any time to determine how much data has been processed for this object. This is useful if the client is buffering data and needs to know which data can be safely evicted. For any sequence of QueryWriteStatus() calls for a given object name, the sequence of returned persisted_size values will be non-decreasing.

Sample code:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   String uploadId = "uploadId1563990780";
   QueryWriteStatusResponse response = storageClient.queryWriteStatus(uploadId);
 }
 

Determines the persisted_size for an object that is being written, which can then be used as the write_offset for the next Write() call.

If the object does not exist (i.e., the object has been deleted, or the first Write() has not yet reached the service), this method returns the error NOT_FOUND.

The client **may** call QueryWriteStatus() at any time to determine how much data has been processed for this object. This is useful if the client is buffering data and needs to know which data can be safely evicted. For any sequence of QueryWriteStatus() calls for a given object name, the sequence of returned persisted_size values will be non-decreasing.

Sample code:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   QueryWriteStatusRequest request =
       QueryWriteStatusRequest.newBuilder()
           .setUploadId("uploadId1563990780")
           .setCommonObjectRequestParams(CommonObjectRequestParams.newBuilder().build())
           .build();
   ApiFuture<QueryWriteStatusResponse> future =
       storageClient.queryWriteStatusCallable().futureCall(request);
   // Do something.
   QueryWriteStatusResponse response = future.get();
 }
 

Reads an object's data.

Sample code:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   ReadObjectRequest request =
       ReadObjectRequest.newBuilder()
           .setBucket("bucket-1378203158")
           .setObject("object-1023368385")
           .setGeneration(305703192)
           .setReadOffset(-715377828)
           .setReadLimit(-164298798)
           .setIfGenerationMatch(-1086241088)
           .setIfGenerationNotMatch(1475720404)
           .setIfMetagenerationMatch(1043427781)
           .setIfMetagenerationNotMatch(1025430873)
           .setCommonObjectRequestParams(CommonObjectRequestParams.newBuilder().build())
           .setReadMask(FieldMask.newBuilder().build())
           .build();
   ServerStream<ReadObjectResponse> stream = storageClient.readObjectCallable().call(request);
   for (ReadObjectResponse response : stream) {
     // Do something when a response is received.
   }
 }
 

Rewrites a source object to a destination object. Optionally overrides metadata.

Sample code:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   RewriteObjectRequest request =
       RewriteObjectRequest.newBuilder()
           .setDestinationName("destinationName-1762755655")
           .setDestinationBucket(BucketName.of("[PROJECT]", "[BUCKET]").toString())
           .setDestinationKmsKey(
               CryptoKeyName.of("[PROJECT]", "[LOCATION]", "[KEY_RING]", "[CRYPTO_KEY]")
                   .toString())
           .setDestination(Object.newBuilder().build())
           .setSourceBucket("sourceBucket841604581")
           .setSourceObject("sourceObject1196439354")
           .setSourceGeneration(1232209852)
           .setRewriteToken("rewriteToken80654285")
           .setDestinationPredefinedAcl("destinationPredefinedAcl1111125814")
           .setIfGenerationMatch(-1086241088)
           .setIfGenerationNotMatch(1475720404)
           .setIfMetagenerationMatch(1043427781)
           .setIfMetagenerationNotMatch(1025430873)
           .setIfSourceGenerationMatch(-1427877280)
           .setIfSourceGenerationNotMatch(1575612532)
           .setIfSourceMetagenerationMatch(1143319909)
           .setIfSourceMetagenerationNotMatch(1900822777)
           .setMaxBytesRewrittenPerCall(1178170730)
           .setCopySourceEncryptionAlgorithm("copySourceEncryptionAlgorithm-1524952548")
           .setCopySourceEncryptionKeyBytes(ByteString.EMPTY)
           .setCopySourceEncryptionKeySha256Bytes(ByteString.EMPTY)
           .setCommonObjectRequestParams(CommonObjectRequestParams.newBuilder().build())
           .build();
   RewriteResponse response = storageClient.rewriteObject(request);
 }
 

Rewrites a source object to a destination object. Optionally overrides metadata.

Sample code:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   RewriteObjectRequest request =
       RewriteObjectRequest.newBuilder()
           .setDestinationName("destinationName-1762755655")
           .setDestinationBucket(BucketName.of("[PROJECT]", "[BUCKET]").toString())
           .setDestinationKmsKey(
               CryptoKeyName.of("[PROJECT]", "[LOCATION]", "[KEY_RING]", "[CRYPTO_KEY]")
                   .toString())
           .setDestination(Object.newBuilder().build())
           .setSourceBucket("sourceBucket841604581")
           .setSourceObject("sourceObject1196439354")
           .setSourceGeneration(1232209852)
           .setRewriteToken("rewriteToken80654285")
           .setDestinationPredefinedAcl("destinationPredefinedAcl1111125814")
           .setIfGenerationMatch(-1086241088)
           .setIfGenerationNotMatch(1475720404)
           .setIfMetagenerationMatch(1043427781)
           .setIfMetagenerationNotMatch(1025430873)
           .setIfSourceGenerationMatch(-1427877280)
           .setIfSourceGenerationNotMatch(1575612532)
           .setIfSourceMetagenerationMatch(1143319909)
           .setIfSourceMetagenerationNotMatch(1900822777)
           .setMaxBytesRewrittenPerCall(1178170730)
           .setCopySourceEncryptionAlgorithm("copySourceEncryptionAlgorithm-1524952548")
           .setCopySourceEncryptionKeyBytes(ByteString.EMPTY)
           .setCopySourceEncryptionKeySha256Bytes(ByteString.EMPTY)
           .setCommonObjectRequestParams(CommonObjectRequestParams.newBuilder().build())
           .build();
   ApiFuture<RewriteResponse> future = storageClient.rewriteObjectCallable().futureCall(request);
   // Do something.
   RewriteResponse response = future.get();
 }
 

Updates an IAM policy for the specified bucket.

Sample code:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   ResourceName resource =
       CryptoKeyName.of("[PROJECT]", "[LOCATION]", "[KEY_RING]", "[CRYPTO_KEY]");
   Policy policy = Policy.newBuilder().build();
   Policy response = storageClient.setIamPolicy(resource, policy);
 }
 

Updates an IAM policy for the specified bucket.

Sample code:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   SetIamPolicyRequest request =
       SetIamPolicyRequest.newBuilder()
           .setResource(
               CryptoKeyName.of("[PROJECT]", "[LOCATION]", "[KEY_RING]", "[CRYPTO_KEY]")
                   .toString())
           .setPolicy(Policy.newBuilder().build())
           .setUpdateMask(FieldMask.newBuilder().build())
           .build();
   Policy response = storageClient.setIamPolicy(request);
 }
 

Updates an IAM policy for the specified bucket.

Sample code:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   String resource =
       CryptoKeyName.of("[PROJECT]", "[LOCATION]", "[KEY_RING]", "[CRYPTO_KEY]").toString();
   Policy policy = Policy.newBuilder().build();
   Policy response = storageClient.setIamPolicy(resource, policy);
 }
 

Updates an IAM policy for the specified bucket.

Sample code:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   SetIamPolicyRequest request =
       SetIamPolicyRequest.newBuilder()
           .setResource(
               CryptoKeyName.of("[PROJECT]", "[LOCATION]", "[KEY_RING]", "[CRYPTO_KEY]")
                   .toString())
           .setPolicy(Policy.newBuilder().build())
           .setUpdateMask(FieldMask.newBuilder().build())
           .build();
   ApiFuture<Policy> future = storageClient.setIamPolicyCallable().futureCall(request);
   // Do something.
   Policy response = future.get();
 }
 

Starts a resumable write. How long the write operation remains valid, and what happens when the write operation becomes invalid, are service-dependent.

Sample code:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   StartResumableWriteRequest request =
       StartResumableWriteRequest.newBuilder()
           .setWriteObjectSpec(WriteObjectSpec.newBuilder().build())
           .setCommonObjectRequestParams(CommonObjectRequestParams.newBuilder().build())
           .build();
   StartResumableWriteResponse response = storageClient.startResumableWrite(request);
 }
 

Starts a resumable write. How long the write operation remains valid, and what happens when the write operation becomes invalid, are service-dependent.

Sample code:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   StartResumableWriteRequest request =
       StartResumableWriteRequest.newBuilder()
           .setWriteObjectSpec(WriteObjectSpec.newBuilder().build())
           .setCommonObjectRequestParams(CommonObjectRequestParams.newBuilder().build())
           .build();
   ApiFuture<StartResumableWriteResponse> future =
       storageClient.startResumableWriteCallable().futureCall(request);
   // Do something.
   StartResumableWriteResponse response = future.get();
 }
 

Tests a set of permissions on the given bucket to see which, if any, are held by the caller.

Sample code:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   ResourceName resource =
       CryptoKeyName.of("[PROJECT]", "[LOCATION]", "[KEY_RING]", "[CRYPTO_KEY]");
   List<String> permissions = new ArrayList<>();
   TestIamPermissionsResponse response = storageClient.testIamPermissions(resource, permissions);
 }
 

Tests a set of permissions on the given bucket to see which, if any, are held by the caller.

Sample code:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   TestIamPermissionsRequest request =
       TestIamPermissionsRequest.newBuilder()
           .setResource(
               CryptoKeyName.of("[PROJECT]", "[LOCATION]", "[KEY_RING]", "[CRYPTO_KEY]")
                   .toString())
           .addAllPermissions(new ArrayList<String>())
           .build();
   TestIamPermissionsResponse response = storageClient.testIamPermissions(request);
 }
 

Tests a set of permissions on the given bucket to see which, if any, are held by the caller.

Sample code:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   String resource =
       CryptoKeyName.of("[PROJECT]", "[LOCATION]", "[KEY_RING]", "[CRYPTO_KEY]").toString();
   List<String> permissions = new ArrayList<>();
   TestIamPermissionsResponse response = storageClient.testIamPermissions(resource, permissions);
 }
 

Tests a set of permissions on the given bucket to see which, if any, are held by the caller.

Sample code:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   TestIamPermissionsRequest request =
       TestIamPermissionsRequest.newBuilder()
           .setResource(
               CryptoKeyName.of("[PROJECT]", "[LOCATION]", "[KEY_RING]", "[CRYPTO_KEY]")
                   .toString())
           .addAllPermissions(new ArrayList<String>())
           .build();
   ApiFuture<TestIamPermissionsResponse> future =
       storageClient.testIamPermissionsCallable().futureCall(request);
   // Do something.
   TestIamPermissionsResponse response = future.get();
 }
 

Updates a bucket. Equivalent to JSON API's storage.buckets.patch method.

Sample code:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   Bucket bucket = Bucket.newBuilder().build();
   FieldMask updateMask = FieldMask.newBuilder().build();
   Bucket response = storageClient.updateBucket(bucket, updateMask);
 }
 

Updates a bucket. Equivalent to JSON API's storage.buckets.patch method.

Sample code:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   UpdateBucketRequest request =
       UpdateBucketRequest.newBuilder()
           .setBucket(Bucket.newBuilder().build())
           .setIfMetagenerationMatch(1043427781)
           .setIfMetagenerationNotMatch(1025430873)
           .setPredefinedAcl("predefinedAcl1207041188")
           .setPredefinedDefaultObjectAcl("predefinedDefaultObjectAcl2109168048")
           .setUpdateMask(FieldMask.newBuilder().build())
           .build();
   Bucket response = storageClient.updateBucket(request);
 }
 

Updates a bucket. Equivalent to JSON API's storage.buckets.patch method.

Sample code:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   UpdateBucketRequest request =
       UpdateBucketRequest.newBuilder()
           .setBucket(Bucket.newBuilder().build())
           .setIfMetagenerationMatch(1043427781)
           .setIfMetagenerationNotMatch(1025430873)
           .setPredefinedAcl("predefinedAcl1207041188")
           .setPredefinedDefaultObjectAcl("predefinedDefaultObjectAcl2109168048")
           .setUpdateMask(FieldMask.newBuilder().build())
           .build();
   ApiFuture<Bucket> future = storageClient.updateBucketCallable().futureCall(request);
   // Do something.
   Bucket response = future.get();
 }
 

Updates a given HMAC key state between ACTIVE and INACTIVE.

Sample code:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   HmacKeyMetadata hmacKey = HmacKeyMetadata.newBuilder().build();
   FieldMask updateMask = FieldMask.newBuilder().build();
   HmacKeyMetadata response = storageClient.updateHmacKey(hmacKey, updateMask);
 }
 

Updates a given HMAC key state between ACTIVE and INACTIVE.

Sample code:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   UpdateHmacKeyRequest request =
       UpdateHmacKeyRequest.newBuilder()
           .setHmacKey(HmacKeyMetadata.newBuilder().build())
           .setUpdateMask(FieldMask.newBuilder().build())
           .build();
   HmacKeyMetadata response = storageClient.updateHmacKey(request);
 }
 

Updates a given HMAC key state between ACTIVE and INACTIVE.

Sample code:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   UpdateHmacKeyRequest request =
       UpdateHmacKeyRequest.newBuilder()
           .setHmacKey(HmacKeyMetadata.newBuilder().build())
           .setUpdateMask(FieldMask.newBuilder().build())
           .build();
   ApiFuture<HmacKeyMetadata> future = storageClient.updateHmacKeyCallable().futureCall(request);
   // Do something.
   HmacKeyMetadata response = future.get();
 }
 

Updates an object's metadata. Equivalent to JSON API's storage.objects.patch.

Sample code:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   Object object = Object.newBuilder().build();
   FieldMask updateMask = FieldMask.newBuilder().build();
   Object response = storageClient.updateObject(object, updateMask);
 }
 

Updates an object's metadata. Equivalent to JSON API's storage.objects.patch.

Sample code:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   UpdateObjectRequest request =
       UpdateObjectRequest.newBuilder()
           .setObject(Object.newBuilder().build())
           .setIfGenerationMatch(-1086241088)
           .setIfGenerationNotMatch(1475720404)
           .setIfMetagenerationMatch(1043427781)
           .setIfMetagenerationNotMatch(1025430873)
           .setPredefinedAcl("predefinedAcl1207041188")
           .setUpdateMask(FieldMask.newBuilder().build())
           .setCommonObjectRequestParams(CommonObjectRequestParams.newBuilder().build())
           .build();
   Object response = storageClient.updateObject(request);
 }
 

Updates an object's metadata. Equivalent to JSON API's storage.objects.patch.

Sample code:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   UpdateObjectRequest request =
       UpdateObjectRequest.newBuilder()
           .setObject(Object.newBuilder().build())
           .setIfGenerationMatch(-1086241088)
           .setIfGenerationNotMatch(1475720404)
           .setIfMetagenerationMatch(1043427781)
           .setIfMetagenerationNotMatch(1025430873)
           .setPredefinedAcl("predefinedAcl1207041188")
           .setUpdateMask(FieldMask.newBuilder().build())
           .setCommonObjectRequestParams(CommonObjectRequestParams.newBuilder().build())
           .build();
   ApiFuture<Object> future = storageClient.updateObjectCallable().futureCall(request);
   // Do something.
   Object response = future.get();
 }
 

Stores a new object and metadata.

An object can be written either in a single message stream or in a resumable sequence of message streams. To write using a single stream, the client should include in the first message of the stream an WriteObjectSpec describing the destination bucket, object, and any preconditions. Additionally, the final message must set 'finish_write' to true, or else it is an error.

For a resumable write, the client should instead call StartResumableWrite(), populating a WriteObjectSpec into that request. They should then attach the returned upload_id to the first message of each following call to WriteObject. If the stream is closed before finishing the upload (either explicitly by the client or due to a network error or an error response from the server), the client should do as follows: - Check the result Status of the stream, to determine if writing can be resumed on this stream or must be restarted from scratch (by calling StartResumableWrite()). The resumable errors are DEADLINE_EXCEEDED, INTERNAL, and UNAVAILABLE. For each case, the client should use binary exponential backoff before retrying. Additionally, writes can be resumed after RESOURCE_EXHAUSTED errors, but only after taking appropriate measures, which may include reducing aggregate send rate across clients and/or requesting a quota increase for your project. - If the call to WriteObject returns ABORTED, that indicates concurrent attempts to update the resumable write, caused either by multiple racing clients or by a single client where the previous request was timed out on the client side but nonetheless reached the server. In this case the client should take steps to prevent further concurrent writes (e.g., increase the timeouts, stop using more than one process to perform the upload, etc.), and then should follow the steps below for resuming the upload. - For resumable errors, the client should call QueryWriteStatus() and then continue writing from the returned persisted_size. This may be less than the amount of data the client previously sent. Note also that it is acceptable to send data starting at an offset earlier than the returned persisted_size; in this case, the service will skip data at offsets that were already persisted (without checking that it matches the previously written data), and write only the data starting from the persisted offset. This behavior can make client-side handling simpler in some cases.

The service will not view the object as complete until the client has sent a WriteObjectRequest with finish_write set to true. Sending any requests on a stream after sending a request with finish_write set to true will cause an error. The client **should** check the response it receives to determine how much data the service was able to commit and whether the service views the object as complete.

Attempting to resume an already finalized object will result in an OK status, with a WriteObjectResponse containing the finalized object's metadata.

Sample code:

 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (StorageClient storageClient = StorageClient.create()) {
   ApiStreamObserver<WriteObjectRequest> responseObserver =
       new ApiStreamObserver<WriteObjectRequest>() {
         {@literal @}Override
         public void onNext(WriteObjectResponse response) {
           // Do something when a response is received.
         }

         {@literal @}Override
         public void onError(Throwable t) {
           // Add error-handling
         }

         {@literal @}Override
         public void onCompleted() {
           // Do something when complete.
         }
       };
   ApiStreamObserver<WriteObjectRequest> requestObserver =
       storageClient.writeObject().clientStreamingCall(responseObserver);
   WriteObjectRequest request =
       WriteObjectRequest.newBuilder()
           .setWriteOffset(-1559543565)
           .setObjectChecksums(ObjectChecksums.newBuilder().build())
           .setFinishWrite(true)
           .setCommonObjectRequestParams(CommonObjectRequestParams.newBuilder().build())
           .build();
   requestObserver.onNext(request);
 }