storage

package
v1.50.0 Latest Latest
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 Go to latest Published: Jan 9, 2025 License: Apache-2.0 Imports: 22 Imported by: 0

Documentation

Overview

Package storage is an auto-generated package for the Cloud Storage API.

This folder contains protocol buffer definitions for an API only accessible to select customers. Customers not participating should not depend on this file. Please contact Google Cloud sales if you are interested. Unless told otherwise by a Google Cloud representative, do not use or otherwise rely on any of the contents of this folder. If you would like to use Cloud Storage, please consult our official documentation (at https://cloud.google.com/storage/docs/apis) for details on our XML and JSON APIs, or else consider one of our client libraries (at https://cloud.google.com/storage/docs/reference/libraries).

General documentation

For information that is relevant for all client libraries please reference https://pkg.go.dev/cloud.google.com/go#pkg-overview. Some information on this page includes:

Example usage

To get started with this package, create a client. 

// go get cloud.google.com/go/storage/internal/apiv2@latest
ctx := context.Background()
// This snippet has been automatically generated and should be regarded as a code template only.
// It will require modifications to work:
// - It may require correct/in-range values for request initialization.
// - It may require specifying regional endpoints when creating the service client as shown in:
//   https://pkg.go.dev/cloud.google.com/go#hdr-Client_Options
c, err := storage.NewClient(ctx)
if err != nil {
	// TODO: Handle error.
}
defer c.Close()

The client will use your default application credentials. Clients should be reused instead of created as needed. The methods of Client are safe for concurrent use by multiple goroutines. The returned client must be Closed when it is done being used.

Using the Client

The following is an example of making an API call with the newly created client, mentioned above. 

stream, err := c.BidiReadObject(ctx)
if err != nil {
	// TODO: Handle error.
}
go func() {
	reqs := []*storagepb.BidiReadObjectRequest{
		// TODO: Create requests.
	}
	for _, req := range reqs {
		if err := stream.Send(req); err != nil {
			// TODO: Handle error.
		}
	}
	stream.CloseSend()
}()
for {
	resp, err := stream.Recv()
	if err == io.EOF {
		break
	}
	if err != nil {
		// TODO: handle error.
	}
	// TODO: Use resp.
	_ = resp
}

Use of Context

The ctx passed to NewClient is used for authentication requests and for creating the underlying connection, but is not used for subsequent calls. Individual methods on the client use the ctx given to them.

To close the open connection, use the Close() method.

Index

Examples

Constants

This section is empty.

Variables

This section is empty.

Functions

func DefaultAuthScopes 

func DefaultAuthScopes() []string

DefaultAuthScopes reports the default set of authentication scopes to use with this package.

Types

type BucketIterator added in v1.19.0 

type BucketIterator struct {

	// Response is the raw response for the current page.
	// It must be cast to the RPC response type.
	// Calling Next() or InternalFetch() updates this value.
	Response interface{}

	// InternalFetch is for use by the Google Cloud Libraries only.
	// It is not part of the stable interface of this package.
	//
	// InternalFetch returns results from a single call to the underlying RPC.
	// The number of results is no greater than pageSize.
	// If there are no more results, nextPageToken is empty and err is nil.
	InternalFetch func(pageSize int, pageToken string) (results []*storagepb.Bucket, nextPageToken string, err error)
	// contains filtered or unexported fields
}

BucketIterator manages a stream of *storagepb.Bucket.

func (*BucketIterator) All added in v1.44.0 

func (it *BucketIterator) All() iter.Seq2[*storagepb.Bucket, error]

All returns an iterator. If an error is returned by the iterator, the iterator will stop after that iteration.

func (*BucketIterator) Next added in v1.19.0 

func (it *BucketIterator) Next() (*storagepb.Bucket, error)

Next returns the next result. Its second return value is iterator.Done if there are no more results. Once Next returns Done, all subsequent calls will return Done.

func (*BucketIterator) PageInfo added in v1.19.0 

func (it *BucketIterator) PageInfo() *iterator.PageInfo

PageInfo supports pagination. See the google.golang.org/api/iterator package for details.

type CallOptions 

type CallOptions struct {
	DeleteBucket              []gax.CallOption
	GetBucket                 []gax.CallOption
	CreateBucket              []gax.CallOption
	ListBuckets               []gax.CallOption
	LockBucketRetentionPolicy []gax.CallOption
	GetIamPolicy              []gax.CallOption
	SetIamPolicy              []gax.CallOption
	TestIamPermissions        []gax.CallOption
	UpdateBucket              []gax.CallOption
	ComposeObject             []gax.CallOption
	DeleteObject              []gax.CallOption
	RestoreObject             []gax.CallOption
	CancelResumableWrite      []gax.CallOption
	GetObject                 []gax.CallOption
	ReadObject                []gax.CallOption
	BidiReadObject            []gax.CallOption
	UpdateObject              []gax.CallOption
	WriteObject               []gax.CallOption
	BidiWriteObject           []gax.CallOption
	ListObjects               []gax.CallOption
	RewriteObject             []gax.CallOption
	StartResumableWrite       []gax.CallOption
	QueryWriteStatus          []gax.CallOption
	MoveObject                []gax.CallOption
}

CallOptions contains the retry settings for each method of Client.

type Client 

type Client struct {

	// The call options for this service.
	CallOptions *CallOptions
	// contains filtered or unexported fields
}

Client is a client for interacting with Cloud Storage API. Methods, except Close, may be called concurrently. However, fields must not be modified concurrently with method calls.

API Overview and Naming SyntaxThe 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 (at 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).

func NewClient 

func NewClient(ctx context.Context, opts ...option.ClientOption) (*Client, error)

NewClient creates a new storage client based on gRPC. The returned client must be Closed when it is done being used to clean up its underlying connections.

API Overview and Naming SyntaxThe 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 (at 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).
Example 
package main

import (
	"context"

	storage "cloud.google.com/go/storage/internal/apiv2"
)

func main() {
	ctx := context.Background()
	// This snippet has been automatically generated and should be regarded as a code template only.
	// It will require modifications to work:
	// - It may require correct/in-range values for request initialization.
	// - It may require specifying regional endpoints when creating the service client as shown in:
	//   https://pkg.go.dev/cloud.google.com/go#hdr-Client_Options
	c, err := storage.NewClient(ctx)
	if err != nil {
		// TODO: Handle error.
	}
	defer c.Close()

	// TODO: Use client.
	_ = c
}

Output:

func (*Client) BidiReadObject added in v1.50.0 

func (c *Client) BidiReadObject(ctx context.Context, opts ...gax.CallOption) (storagepb.Storage_BidiReadObjectClient, error)

BidiReadObject reads an object’s data.

This is a bi-directional API with the added support for reading multiple ranges within one stream both within and across multiple messages. If the server encountered an error for any of the inputs, the stream will be closed with the relevant error code. Because the API allows for multiple outstanding requests, when the stream is closed the error response will contain a BidiReadObjectRangesError proto in the error extension describing the error for each outstanding read_id.

IAM Permissions:

Requires storage.objects.get

IAM permission (at https://cloud.google.com/iam/docs/overview#permissions) on the bucket.

This API is currently in preview and is not yet available for general use.

Example 
package main

import (
	"context"
	"io"

	storage "cloud.google.com/go/storage/internal/apiv2"

	storagepb "cloud.google.com/go/storage/internal/apiv2/storagepb"
)

func main() {
	ctx := context.Background()
	// This snippet has been automatically generated and should be regarded as a code template only.
	// It will require modifications to work:
	// - It may require correct/in-range values for request initialization.
	// - It may require specifying regional endpoints when creating the service client as shown in:
	//   https://pkg.go.dev/cloud.google.com/go#hdr-Client_Options
	c, err := storage.NewClient(ctx)
	if err != nil {
		// TODO: Handle error.
	}
	defer c.Close()
	stream, err := c.BidiReadObject(ctx)
	if err != nil {
		// TODO: Handle error.
	}
	go func() {
		reqs := []*storagepb.BidiReadObjectRequest{
			// TODO: Create requests.
		}
		for _, req := range reqs {
			if err := stream.Send(req); err != nil {
				// TODO: Handle error.
			}
		}
		stream.CloseSend()
	}()
	for {
		resp, err := stream.Recv()
		if err == io.EOF {
			break
		}
		if err != nil {
			// TODO: handle error.
		}
		// TODO: Use resp.
		_ = resp
	}
}

Output:

func (*Client) BidiWriteObject added in v1.34.0 

func (c *Client) BidiWriteObject(ctx context.Context, opts ...gax.CallOption) (storagepb.Storage_BidiWriteObjectClient, error)

BidiWriteObject stores a new object and metadata.

This is similar to the WriteObject call with the added support for manual flushing of persisted state, and the ability to determine current persisted size without closing the stream.

The client may specify one or both of the state_lookup and flush fields in each BidiWriteObjectRequest. If flush is specified, the data written so far will be persisted to storage. If state_lookup is specified, the service will respond with a BidiWriteObjectResponse that contains the persisted size. If both flush and state_lookup are specified, the flush will always occur before a state_lookup, so that both may be set in the same request and the returned state will be the state of the object post-flush. When the stream is closed, a BidiWriteObjectResponse will always be sent to the client, regardless of the value of state_lookup.

Example 
package main

import (
	"context"
	"io"

	storage "cloud.google.com/go/storage/internal/apiv2"

	storagepb "cloud.google.com/go/storage/internal/apiv2/storagepb"
)

func main() {
	ctx := context.Background()
	// This snippet has been automatically generated and should be regarded as a code template only.
	// It will require modifications to work:
	// - It may require correct/in-range values for request initialization.
	// - It may require specifying regional endpoints when creating the service client as shown in:
	//   https://pkg.go.dev/cloud.google.com/go#hdr-Client_Options
	c, err := storage.NewClient(ctx)
	if err != nil {
		// TODO: Handle error.
	}
	defer c.Close()
	stream, err := c.BidiWriteObject(ctx)
	if err != nil {
		// TODO: Handle error.
	}
	go func() {
		reqs := []*storagepb.BidiWriteObjectRequest{
			// TODO: Create requests.
		}
		for _, req := range reqs {
			if err := stream.Send(req); err != nil {
				// TODO: Handle error.
			}
		}
		stream.CloseSend()
	}()
	for {
		resp, err := stream.Recv()
		if err == io.EOF {
			break
		}
		if err != nil {
			// TODO: handle error.
		}
		// TODO: Use resp.
		_ = resp
	}
}

Output:

func (*Client) CancelResumableWrite added in v1.25.0 

func (c *Client) CancelResumableWrite(ctx context.Context, req *storagepb.CancelResumableWriteRequest, opts ...gax.CallOption) (*storagepb.CancelResumableWriteResponse, error)

CancelResumableWrite cancels an in-progress resumable upload.

Any attempts to write to the resumable upload after cancelling the upload will fail.

The behavior for currently in progress write operations is not guaranteed - they could either complete before the cancellation or fail if the cancellation completes first.

Example 
package main

import (
	"context"

	storage "cloud.google.com/go/storage/internal/apiv2"

	storagepb "cloud.google.com/go/storage/internal/apiv2/storagepb"
)

func main() {
	ctx := context.Background()
	// This snippet has been automatically generated and should be regarded as a code template only.
	// It will require modifications to work:
	// - It may require correct/in-range values for request initialization.
	// - It may require specifying regional endpoints when creating the service client as shown in:
	//   https://pkg.go.dev/cloud.google.com/go#hdr-Client_Options
	c, err := storage.NewClient(ctx)
	if err != nil {
		// TODO: Handle error.
	}
	defer c.Close()

	req := &storagepb.CancelResumableWriteRequest{
		// TODO: Fill request struct fields.
		// See https://pkg.go.dev/cloud.google.com/go/storage/internal/apiv2/storagepb#CancelResumableWriteRequest.
	}
	resp, err := c.CancelResumableWrite(ctx, req)
	if err != nil {
		// TODO: Handle error.
	}
	// TODO: Use resp.
	_ = resp
}

Output:

func (*Client) Close 

func (c *Client) Close() error

Close closes the connection to the API service. The user should invoke this when the client is no longer required.

func (*Client) ComposeObject added in v1.19.0 

func (c *Client) ComposeObject(ctx context.Context, req *storagepb.ComposeObjectRequest, opts ...gax.CallOption) (*storagepb.Object, error)

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

Example 
package main

import (
	"context"

	storage "cloud.google.com/go/storage/internal/apiv2"

	storagepb "cloud.google.com/go/storage/internal/apiv2/storagepb"
)

func main() {
	ctx := context.Background()
	// This snippet has been automatically generated and should be regarded as a code template only.
	// It will require modifications to work:
	// - It may require correct/in-range values for request initialization.
	// - It may require specifying regional endpoints when creating the service client as shown in:
	//   https://pkg.go.dev/cloud.google.com/go#hdr-Client_Options
	c, err := storage.NewClient(ctx)
	if err != nil {
		// TODO: Handle error.
	}
	defer c.Close()

	req := &storagepb.ComposeObjectRequest{
		// TODO: Fill request struct fields.
		// See https://pkg.go.dev/cloud.google.com/go/storage/internal/apiv2/storagepb#ComposeObjectRequest.
	}
	resp, err := c.ComposeObject(ctx, req)
	if err != nil {
		// TODO: Handle error.
	}
	// TODO: Use resp.
	_ = resp
}

Output:

func (*Client) Connection deprecated 

func (c *Client) Connection() *grpc.ClientConn

Connection returns a connection to the API service.

Deprecated: Connections are now pooled so this method does not always return the same resource.

func (*Client) CreateBucket added in v1.19.0 

func (c *Client) CreateBucket(ctx context.Context, req *storagepb.CreateBucketRequest, opts ...gax.CallOption) (*storagepb.Bucket, error)

CreateBucket creates a new bucket.

Example 
package main

import (
	"context"

	storage "cloud.google.com/go/storage/internal/apiv2"

	storagepb "cloud.google.com/go/storage/internal/apiv2/storagepb"
)

func main() {
	ctx := context.Background()
	// This snippet has been automatically generated and should be regarded as a code template only.
	// It will require modifications to work:
	// - It may require correct/in-range values for request initialization.
	// - It may require specifying regional endpoints when creating the service client as shown in:
	//   https://pkg.go.dev/cloud.google.com/go#hdr-Client_Options
	c, err := storage.NewClient(ctx)
	if err != nil {
		// TODO: Handle error.
	}
	defer c.Close()

	req := &storagepb.CreateBucketRequest{
		// TODO: Fill request struct fields.
		// See https://pkg.go.dev/cloud.google.com/go/storage/internal/apiv2/storagepb#CreateBucketRequest.
	}
	resp, err := c.CreateBucket(ctx, req)
	if err != nil {
		// TODO: Handle error.
	}
	// TODO: Use resp.
	_ = resp
}

Output:

func (*Client) DeleteBucket added in v1.19.0 

func (c *Client) DeleteBucket(ctx context.Context, req *storagepb.DeleteBucketRequest, opts ...gax.CallOption) error

DeleteBucket permanently deletes an empty bucket.

Example 
package main

import (
	"context"

	storage "cloud.google.com/go/storage/internal/apiv2"

	storagepb "cloud.google.com/go/storage/internal/apiv2/storagepb"
)

func main() {
	ctx := context.Background()
	// This snippet has been automatically generated and should be regarded as a code template only.
	// It will require modifications to work:
	// - It may require correct/in-range values for request initialization.
	// - It may require specifying regional endpoints when creating the service client as shown in:
	//   https://pkg.go.dev/cloud.google.com/go#hdr-Client_Options
	c, err := storage.NewClient(ctx)
	if err != nil {
		// TODO: Handle error.
	}
	defer c.Close()

	req := &storagepb.DeleteBucketRequest{
		// TODO: Fill request struct fields.
		// See https://pkg.go.dev/cloud.google.com/go/storage/internal/apiv2/storagepb#DeleteBucketRequest.
	}
	err = c.DeleteBucket(ctx, req)
	if err != nil {
		// TODO: Handle error.
	}
}

Output:

func (*Client) DeleteObject added in v1.19.0 

func (c *Client) DeleteObject(ctx context.Context, req *storagepb.DeleteObjectRequest, opts ...gax.CallOption) error

DeleteObject deletes an object and its metadata. Deletions are permanent if versioning is not enabled for the bucket, or if the generation parameter is used, or if soft delete (at https://cloud.google.com/storage/docs/soft-delete) is not enabled for the bucket. When this API is used to delete an object from a bucket that has soft delete policy enabled, the object becomes soft deleted, and the softDeleteTime and hardDeleteTime properties are set on the object. This API cannot be used to permanently delete soft-deleted objects. Soft-deleted objects are permanently deleted according to their hardDeleteTime.

You can use the [RestoreObject][google.storage.v2.Storage.RestoreObject] API to restore soft-deleted objects until the soft delete retention period has passed.

IAM Permissions:

Requires storage.objects.delete IAM permission (at https://cloud.google.com/iam/docs/overview#permissions) on the bucket.

Example 
package main

import (
	"context"

	storage "cloud.google.com/go/storage/internal/apiv2"

	storagepb "cloud.google.com/go/storage/internal/apiv2/storagepb"
)

func main() {
	ctx := context.Background()
	// This snippet has been automatically generated and should be regarded as a code template only.
	// It will require modifications to work:
	// - It may require correct/in-range values for request initialization.
	// - It may require specifying regional endpoints when creating the service client as shown in:
	//   https://pkg.go.dev/cloud.google.com/go#hdr-Client_Options
	c, err := storage.NewClient(ctx)
	if err != nil {
		// TODO: Handle error.
	}
	defer c.Close()

	req := &storagepb.DeleteObjectRequest{
		// TODO: Fill request struct fields.
		// See https://pkg.go.dev/cloud.google.com/go/storage/internal/apiv2/storagepb#DeleteObjectRequest.
	}
	err = c.DeleteObject(ctx, req)
	if err != nil {
		// TODO: Handle error.
	}
}

Output:

func (*Client) GetBucket added in v1.19.0 

func (c *Client) GetBucket(ctx context.Context, req *storagepb.GetBucketRequest, opts ...gax.CallOption) (*storagepb.Bucket, error)

GetBucket returns metadata for the specified bucket.

Example 
package main

import (
	"context"

	storage "cloud.google.com/go/storage/internal/apiv2"

	storagepb "cloud.google.com/go/storage/internal/apiv2/storagepb"
)

func main() {
	ctx := context.Background()
	// This snippet has been automatically generated and should be regarded as a code template only.
	// It will require modifications to work:
	// - It may require correct/in-range values for request initialization.
	// - It may require specifying regional endpoints when creating the service client as shown in:
	//   https://pkg.go.dev/cloud.google.com/go#hdr-Client_Options
	c, err := storage.NewClient(ctx)
	if err != nil {
		// TODO: Handle error.
	}
	defer c.Close()

	req := &storagepb.GetBucketRequest{
		// TODO: Fill request struct fields.
		// See https://pkg.go.dev/cloud.google.com/go/storage/internal/apiv2/storagepb#GetBucketRequest.
	}
	resp, err := c.GetBucket(ctx, req)
	if err != nil {
		// TODO: Handle error.
	}
	// TODO: Use resp.
	_ = resp
}

Output:

func (*Client) GetIamPolicy added in v1.19.0 

func (c *Client) GetIamPolicy(ctx context.Context, req *iampb.GetIamPolicyRequest, opts ...gax.CallOption) (*iampb.Policy, error)

GetIamPolicy gets the IAM policy for a specified bucket. The resource field in the request should be projects/_/buckets/{bucket}.

Example 
package main

import (
	"context"

	iampb "cloud.google.com/go/iam/apiv1/iampb"
	storage "cloud.google.com/go/storage/internal/apiv2"
)

func main() {
	ctx := context.Background()
	// This snippet has been automatically generated and should be regarded as a code template only.
	// It will require modifications to work:
	// - It may require correct/in-range values for request initialization.
	// - It may require specifying regional endpoints when creating the service client as shown in:
	//   https://pkg.go.dev/cloud.google.com/go#hdr-Client_Options
	c, err := storage.NewClient(ctx)
	if err != nil {
		// TODO: Handle error.
	}
	defer c.Close()

	req := &iampb.GetIamPolicyRequest{
		// TODO: Fill request struct fields.
		// See https://pkg.go.dev/cloud.google.com/go/iam/apiv1/iampb#GetIamPolicyRequest.
	}
	resp, err := c.GetIamPolicy(ctx, req)
	if err != nil {
		// TODO: Handle error.
	}
	// TODO: Use resp.
	_ = resp
}

Output:

func (*Client) GetObject added in v1.19.0 

func (c *Client) GetObject(ctx context.Context, req *storagepb.GetObjectRequest, opts ...gax.CallOption) (*storagepb.Object, error)

GetObject retrieves object metadata.

IAM Permissions:

Requires storage.objects.get IAM permission (at https://cloud.google.com/iam/docs/overview#permissions) on the bucket. To return object ACLs, the authenticated user must also have the storage.objects.getIamPolicy permission.

Example 
package main

import (
	"context"

	storage "cloud.google.com/go/storage/internal/apiv2"

	storagepb "cloud.google.com/go/storage/internal/apiv2/storagepb"
)

func main() {
	ctx := context.Background()
	// This snippet has been automatically generated and should be regarded as a code template only.
	// It will require modifications to work:
	// - It may require correct/in-range values for request initialization.
	// - It may require specifying regional endpoints when creating the service client as shown in:
	//   https://pkg.go.dev/cloud.google.com/go#hdr-Client_Options
	c, err := storage.NewClient(ctx)
	if err != nil {
		// TODO: Handle error.
	}
	defer c.Close()

	req := &storagepb.GetObjectRequest{
		// TODO: Fill request struct fields.
		// See https://pkg.go.dev/cloud.google.com/go/storage/internal/apiv2/storagepb#GetObjectRequest.
	}
	resp, err := c.GetObject(ctx, req)
	if err != nil {
		// TODO: Handle error.
	}
	// TODO: Use resp.
	_ = resp
}

Output:

func (*Client) ListBuckets added in v1.19.0 

func (c *Client) ListBuckets(ctx context.Context, req *storagepb.ListBucketsRequest, opts ...gax.CallOption) *BucketIterator

ListBuckets retrieves a list of buckets for a given project.

Example 
package main

import (
	"context"

	storage "cloud.google.com/go/storage/internal/apiv2"

	storagepb "cloud.google.com/go/storage/internal/apiv2/storagepb"
	"google.golang.org/api/iterator"
)

func main() {
	ctx := context.Background()
	// This snippet has been automatically generated and should be regarded as a code template only.
	// It will require modifications to work:
	// - It may require correct/in-range values for request initialization.
	// - It may require specifying regional endpoints when creating the service client as shown in:
	//   https://pkg.go.dev/cloud.google.com/go#hdr-Client_Options
	c, err := storage.NewClient(ctx)
	if err != nil {
		// TODO: Handle error.
	}
	defer c.Close()

	req := &storagepb.ListBucketsRequest{
		// TODO: Fill request struct fields.
		// See https://pkg.go.dev/cloud.google.com/go/storage/internal/apiv2/storagepb#ListBucketsRequest.
	}
	it := c.ListBuckets(ctx, req)
	for {
		resp, err := it.Next()
		if err == iterator.Done {
			break
		}
		if err != nil {
			// TODO: Handle error.
		}
		// TODO: Use resp.
		_ = resp

		// If you need to access the underlying RPC response,
		// you can do so by casting the `Response` as below.
		// Otherwise, remove this line. Only populated after
		// first call to Next(). Not safe for concurrent access.
		_ = it.Response.(*storagepb.ListBucketsResponse)
	}
}

Output:
Example (All) 
package main

import (
	"context"

	storage "cloud.google.com/go/storage/internal/apiv2"
	storagepb "cloud.google.com/go/storage/internal/apiv2/storagepb"
)

func main() {
	ctx := context.Background()
	// This snippet has been automatically generated and should be regarded as a code template only.
	// It will require modifications to work:
	// - It may require correct/in-range values for request initialization.
	// - It may require specifying regional endpoints when creating the service client as shown in:
	//   https://pkg.go.dev/cloud.google.com/go#hdr-Client_Options
	c, err := storage.NewClient(ctx)
	if err != nil {
		// TODO: Handle error.
	}
	defer c.Close()

	req := &storagepb.ListBucketsRequest{
		// TODO: Fill request struct fields.
		// See https://pkg.go.dev/cloud.google.com/go/storage/internal/apiv2/storagepb#ListBucketsRequest.
	}
	for resp, err := range c.ListBuckets(ctx, req).All() {
		if err != nil {
			// TODO: Handle error and break/return/continue. Iteration will stop after any error.
		}
		// TODO: Use resp.
		_ = resp
	}
}

Output:

func (*Client) ListObjects added in v1.19.0 

func (c *Client) ListObjects(ctx context.Context, req *storagepb.ListObjectsRequest, opts ...gax.CallOption) *ObjectIterator

ListObjects retrieves a list of objects matching the criteria.

IAM Permissions:

The authenticated user requires storage.objects.list IAM permission (at https://cloud.google.com/iam/docs/overview#permissions) to use this method. To return object ACLs, the authenticated user must also have the storage.objects.getIamPolicy permission.

Example 
package main

import (
	"context"

	storage "cloud.google.com/go/storage/internal/apiv2"

	storagepb "cloud.google.com/go/storage/internal/apiv2/storagepb"
	"google.golang.org/api/iterator"
)

func main() {
	ctx := context.Background()
	// This snippet has been automatically generated and should be regarded as a code template only.
	// It will require modifications to work:
	// - It may require correct/in-range values for request initialization.
	// - It may require specifying regional endpoints when creating the service client as shown in:
	//   https://pkg.go.dev/cloud.google.com/go#hdr-Client_Options
	c, err := storage.NewClient(ctx)
	if err != nil {
		// TODO: Handle error.
	}
	defer c.Close()

	req := &storagepb.ListObjectsRequest{
		// TODO: Fill request struct fields.
		// See https://pkg.go.dev/cloud.google.com/go/storage/internal/apiv2/storagepb#ListObjectsRequest.
	}
	it := c.ListObjects(ctx, req)
	for {
		resp, err := it.Next()
		if err == iterator.Done {
			break
		}
		if err != nil {
			// TODO: Handle error.
		}
		// TODO: Use resp.
		_ = resp

		// If you need to access the underlying RPC response,
		// you can do so by casting the `Response` as below.
		// Otherwise, remove this line. Only populated after
		// first call to Next(). Not safe for concurrent access.
		_ = it.Response.(*storagepb.ListObjectsResponse)
	}
}

Output:
Example (All) 
package main

import (
	"context"

	storage "cloud.google.com/go/storage/internal/apiv2"
	storagepb "cloud.google.com/go/storage/internal/apiv2/storagepb"
)

func main() {
	ctx := context.Background()
	// This snippet has been automatically generated and should be regarded as a code template only.
	// It will require modifications to work:
	// - It may require correct/in-range values for request initialization.
	// - It may require specifying regional endpoints when creating the service client as shown in:
	//   https://pkg.go.dev/cloud.google.com/go#hdr-Client_Options
	c, err := storage.NewClient(ctx)
	if err != nil {
		// TODO: Handle error.
	}
	defer c.Close()

	req := &storagepb.ListObjectsRequest{
		// TODO: Fill request struct fields.
		// See https://pkg.go.dev/cloud.google.com/go/storage/internal/apiv2/storagepb#ListObjectsRequest.
	}
	for resp, err := range c.ListObjects(ctx, req).All() {
		if err != nil {
			// TODO: Handle error and break/return/continue. Iteration will stop after any error.
		}
		// TODO: Use resp.
		_ = resp
	}
}

Output:

func (*Client) LockBucketRetentionPolicy added in v1.19.0 

func (c *Client) LockBucketRetentionPolicy(ctx context.Context, req *storagepb.LockBucketRetentionPolicyRequest, opts ...gax.CallOption) (*storagepb.Bucket, error)

LockBucketRetentionPolicy locks retention policy on a bucket.

Example 
package main

import (
	"context"

	storage "cloud.google.com/go/storage/internal/apiv2"

	storagepb "cloud.google.com/go/storage/internal/apiv2/storagepb"
)

func main() {
	ctx := context.Background()
	// This snippet has been automatically generated and should be regarded as a code template only.
	// It will require modifications to work:
	// - It may require correct/in-range values for request initialization.
	// - It may require specifying regional endpoints when creating the service client as shown in:
	//   https://pkg.go.dev/cloud.google.com/go#hdr-Client_Options
	c, err := storage.NewClient(ctx)
	if err != nil {
		// TODO: Handle error.
	}
	defer c.Close()

	req := &storagepb.LockBucketRetentionPolicyRequest{
		// TODO: Fill request struct fields.
		// See https://pkg.go.dev/cloud.google.com/go/storage/internal/apiv2/storagepb#LockBucketRetentionPolicyRequest.
	}
	resp, err := c.LockBucketRetentionPolicy(ctx, req)
	if err != nil {
		// TODO: Handle error.
	}
	// TODO: Use resp.
	_ = resp
}

Output:

func (*Client) MoveObject added in v1.49.0 

func (c *Client) MoveObject(ctx context.Context, req *storagepb.MoveObjectRequest, opts ...gax.CallOption) (*storagepb.Object, error)

MoveObject moves the source object to the destination object in the same bucket.

Example 
package main

import (
	"context"

	storage "cloud.google.com/go/storage/internal/apiv2"

	storagepb "cloud.google.com/go/storage/internal/apiv2/storagepb"
)

func main() {
	ctx := context.Background()
	// This snippet has been automatically generated and should be regarded as a code template only.
	// It will require modifications to work:
	// - It may require correct/in-range values for request initialization.
	// - It may require specifying regional endpoints when creating the service client as shown in:
	//   https://pkg.go.dev/cloud.google.com/go#hdr-Client_Options
	c, err := storage.NewClient(ctx)
	if err != nil {
		// TODO: Handle error.
	}
	defer c.Close()

	req := &storagepb.MoveObjectRequest{
		// TODO: Fill request struct fields.
		// See https://pkg.go.dev/cloud.google.com/go/storage/internal/apiv2/storagepb#MoveObjectRequest.
	}
	resp, err := c.MoveObject(ctx, req)
	if err != nil {
		// TODO: Handle error.
	}
	// TODO: Use resp.
	_ = resp
}

Output:

func (*Client) QueryWriteStatus 

func (c *Client) QueryWriteStatus(ctx context.Context, req *storagepb.QueryWriteStatusRequest, opts ...gax.CallOption) (*storagepb.QueryWriteStatusResponse, error)

QueryWriteStatus determines the persisted_size of an object that is being written. This method is part of the resumable upload (at https://cloud.google.com/storage/docs/resumable-uploads) feature. The returned value is the size of the object that has been persisted so far. The value can be used as the write_offset for the next Write() call.

If the object does not exist, meaning if it was deleted, or the first Write() has not yet reached the service, this method returns the error NOT_FOUND.

This method is useful for clients that buffer data and need to know which data can be safely evicted. The client can call QueryWriteStatus() at any time to determine how much data has been logged for this object. For any sequence of QueryWriteStatus() calls for a given object name, the sequence of returned persisted_size values are non-decreasing.

Example 
package main

import (
	"context"

	storage "cloud.google.com/go/storage/internal/apiv2"

	storagepb "cloud.google.com/go/storage/internal/apiv2/storagepb"
)

func main() {
	ctx := context.Background()
	// This snippet has been automatically generated and should be regarded as a code template only.
	// It will require modifications to work:
	// - It may require correct/in-range values for request initialization.
	// - It may require specifying regional endpoints when creating the service client as shown in:
	//   https://pkg.go.dev/cloud.google.com/go#hdr-Client_Options
	c, err := storage.NewClient(ctx)
	if err != nil {
		// TODO: Handle error.
	}
	defer c.Close()

	req := &storagepb.QueryWriteStatusRequest{
		// TODO: Fill request struct fields.
		// See https://pkg.go.dev/cloud.google.com/go/storage/internal/apiv2/storagepb#QueryWriteStatusRequest.
	}
	resp, err := c.QueryWriteStatus(ctx, req)
	if err != nil {
		// TODO: Handle error.
	}
	// TODO: Use resp.
	_ = resp
}

Output:

func (*Client) ReadObject 

func (c *Client) ReadObject(ctx context.Context, req *storagepb.ReadObjectRequest, opts ...gax.CallOption) (storagepb.Storage_ReadObjectClient, error)

ReadObject retrieves object data.

IAM Permissions:

Requires storage.objects.get IAM permission (at https://cloud.google.com/iam/docs/overview#permissions) on the bucket.

func (*Client) RestoreObject added in v1.34.0 

func (c *Client) RestoreObject(ctx context.Context, req *storagepb.RestoreObjectRequest, opts ...gax.CallOption) (*storagepb.Object, error)

RestoreObject restores a soft-deleted object.

Example 
package main

import (
	"context"

	storage "cloud.google.com/go/storage/internal/apiv2"

	storagepb "cloud.google.com/go/storage/internal/apiv2/storagepb"
)

func main() {
	ctx := context.Background()
	// This snippet has been automatically generated and should be regarded as a code template only.
	// It will require modifications to work:
	// - It may require correct/in-range values for request initialization.
	// - It may require specifying regional endpoints when creating the service client as shown in:
	//   https://pkg.go.dev/cloud.google.com/go#hdr-Client_Options
	c, err := storage.NewClient(ctx)
	if err != nil {
		// TODO: Handle error.
	}
	defer c.Close()

	req := &storagepb.RestoreObjectRequest{
		// TODO: Fill request struct fields.
		// See https://pkg.go.dev/cloud.google.com/go/storage/internal/apiv2/storagepb#RestoreObjectRequest.
	}
	resp, err := c.RestoreObject(ctx, req)
	if err != nil {
		// TODO: Handle error.
	}
	// TODO: Use resp.
	_ = resp
}

Output:

func (*Client) RewriteObject added in v1.19.0 

func (c *Client) RewriteObject(ctx context.Context, req *storagepb.RewriteObjectRequest, opts ...gax.CallOption) (*storagepb.RewriteResponse, error)

RewriteObject rewrites a source object to a destination object. Optionally overrides metadata.

Example 
package main

import (
	"context"

	storage "cloud.google.com/go/storage/internal/apiv2"

	storagepb "cloud.google.com/go/storage/internal/apiv2/storagepb"
)

func main() {
	ctx := context.Background()
	// This snippet has been automatically generated and should be regarded as a code template only.
	// It will require modifications to work:
	// - It may require correct/in-range values for request initialization.
	// - It may require specifying regional endpoints when creating the service client as shown in:
	//   https://pkg.go.dev/cloud.google.com/go#hdr-Client_Options
	c, err := storage.NewClient(ctx)
	if err != nil {
		// TODO: Handle error.
	}
	defer c.Close()

	req := &storagepb.RewriteObjectRequest{
		// TODO: Fill request struct fields.
		// See https://pkg.go.dev/cloud.google.com/go/storage/internal/apiv2/storagepb#RewriteObjectRequest.
	}
	resp, err := c.RewriteObject(ctx, req)
	if err != nil {
		// TODO: Handle error.
	}
	// TODO: Use resp.
	_ = resp
}

Output:

func (*Client) SetIamPolicy added in v1.19.0 

func (c *Client) SetIamPolicy(ctx context.Context, req *iampb.SetIamPolicyRequest, opts ...gax.CallOption) (*iampb.Policy, error)

SetIamPolicy updates an IAM policy for the specified bucket. The resource field in the request should be projects/_/buckets/{bucket}.

Example 
package main

import (
	"context"

	iampb "cloud.google.com/go/iam/apiv1/iampb"
	storage "cloud.google.com/go/storage/internal/apiv2"
)

func main() {
	ctx := context.Background()
	// This snippet has been automatically generated and should be regarded as a code template only.
	// It will require modifications to work:
	// - It may require correct/in-range values for request initialization.
	// - It may require specifying regional endpoints when creating the service client as shown in:
	//   https://pkg.go.dev/cloud.google.com/go#hdr-Client_Options
	c, err := storage.NewClient(ctx)
	if err != nil {
		// TODO: Handle error.
	}
	defer c.Close()

	req := &iampb.SetIamPolicyRequest{
		// TODO: Fill request struct fields.
		// See https://pkg.go.dev/cloud.google.com/go/iam/apiv1/iampb#SetIamPolicyRequest.
	}
	resp, err := c.SetIamPolicy(ctx, req)
	if err != nil {
		// TODO: Handle error.
	}
	// TODO: Use resp.
	_ = resp
}

Output:

func (*Client) StartResumableWrite 

func (c *Client) StartResumableWrite(ctx context.Context, req *storagepb.StartResumableWriteRequest, opts ...gax.CallOption) (*storagepb.StartResumableWriteResponse, error)

StartResumableWrite starts a resumable write operation. This method is part of the Resumable upload (at https://cloud.google.com/storage/docs/resumable-uploads) feature. This allows you to upload large objects in multiple chunks, which is more resilient to network interruptions than a single upload. The validity duration of the write operation, and the consequences of it becoming invalid, are service-dependent.

IAM Permissions:

Requires storage.objects.create IAM permission (at https://cloud.google.com/iam/docs/overview#permissions) on the bucket.

Example 
package main

import (
	"context"

	storage "cloud.google.com/go/storage/internal/apiv2"

	storagepb "cloud.google.com/go/storage/internal/apiv2/storagepb"
)

func main() {
	ctx := context.Background()
	// This snippet has been automatically generated and should be regarded as a code template only.
	// It will require modifications to work:
	// - It may require correct/in-range values for request initialization.
	// - It may require specifying regional endpoints when creating the service client as shown in:
	//   https://pkg.go.dev/cloud.google.com/go#hdr-Client_Options
	c, err := storage.NewClient(ctx)
	if err != nil {
		// TODO: Handle error.
	}
	defer c.Close()

	req := &storagepb.StartResumableWriteRequest{
		// TODO: Fill request struct fields.
		// See https://pkg.go.dev/cloud.google.com/go/storage/internal/apiv2/storagepb#StartResumableWriteRequest.
	}
	resp, err := c.StartResumableWrite(ctx, req)
	if err != nil {
		// TODO: Handle error.
	}
	// TODO: Use resp.
	_ = resp
}

Output:

func (*Client) TestIamPermissions added in v1.19.0 

func (c *Client) TestIamPermissions(ctx context.Context, req *iampb.TestIamPermissionsRequest, opts ...gax.CallOption) (*iampb.TestIamPermissionsResponse, error)

TestIamPermissions tests a set of permissions on the given bucket, object, or managed folder to see which, if any, are held by the caller. The resource field in the request should be projects/_/buckets/{bucket} for a bucket, projects/_/buckets/{bucket}/objects/{object} for an object, or projects/_/buckets/{bucket}/managedFolders/{managedFolder} for a managed folder.

Example 
package main

import (
	"context"

	iampb "cloud.google.com/go/iam/apiv1/iampb"
	storage "cloud.google.com/go/storage/internal/apiv2"
)

func main() {
	ctx := context.Background()
	// This snippet has been automatically generated and should be regarded as a code template only.
	// It will require modifications to work:
	// - It may require correct/in-range values for request initialization.
	// - It may require specifying regional endpoints when creating the service client as shown in:
	//   https://pkg.go.dev/cloud.google.com/go#hdr-Client_Options
	c, err := storage.NewClient(ctx)
	if err != nil {
		// TODO: Handle error.
	}
	defer c.Close()

	req := &iampb.TestIamPermissionsRequest{
		// TODO: Fill request struct fields.
		// See https://pkg.go.dev/cloud.google.com/go/iam/apiv1/iampb#TestIamPermissionsRequest.
	}
	resp, err := c.TestIamPermissions(ctx, req)
	if err != nil {
		// TODO: Handle error.
	}
	// TODO: Use resp.
	_ = resp
}

Output:

func (*Client) UpdateBucket added in v1.19.0 

func (c *Client) UpdateBucket(ctx context.Context, req *storagepb.UpdateBucketRequest, opts ...gax.CallOption) (*storagepb.Bucket, error)

UpdateBucket updates a bucket. Equivalent to JSON API’s storage.buckets.patch method.

Example 
package main

import (
	"context"

	storage "cloud.google.com/go/storage/internal/apiv2"

	storagepb "cloud.google.com/go/storage/internal/apiv2/storagepb"
)

func main() {
	ctx := context.Background()
	// This snippet has been automatically generated and should be regarded as a code template only.
	// It will require modifications to work:
	// - It may require correct/in-range values for request initialization.
	// - It may require specifying regional endpoints when creating the service client as shown in:
	//   https://pkg.go.dev/cloud.google.com/go#hdr-Client_Options
	c, err := storage.NewClient(ctx)
	if err != nil {
		// TODO: Handle error.
	}
	defer c.Close()

	req := &storagepb.UpdateBucketRequest{
		// TODO: Fill request struct fields.
		// See https://pkg.go.dev/cloud.google.com/go/storage/internal/apiv2/storagepb#UpdateBucketRequest.
	}
	resp, err := c.UpdateBucket(ctx, req)
	if err != nil {
		// TODO: Handle error.
	}
	// TODO: Use resp.
	_ = resp
}

Output:

func (*Client) UpdateObject added in v1.19.0 

func (c *Client) UpdateObject(ctx context.Context, req *storagepb.UpdateObjectRequest, opts ...gax.CallOption) (*storagepb.Object, error)

UpdateObject updates an object’s metadata. Equivalent to JSON API’s storage.objects.patch.

Example 
package main

import (
	"context"

	storage "cloud.google.com/go/storage/internal/apiv2"

	storagepb "cloud.google.com/go/storage/internal/apiv2/storagepb"
)

func main() {
	ctx := context.Background()
	// This snippet has been automatically generated and should be regarded as a code template only.
	// It will require modifications to work:
	// - It may require correct/in-range values for request initialization.
	// - It may require specifying regional endpoints when creating the service client as shown in:
	//   https://pkg.go.dev/cloud.google.com/go#hdr-Client_Options
	c, err := storage.NewClient(ctx)
	if err != nil {
		// TODO: Handle error.
	}
	defer c.Close()

	req := &storagepb.UpdateObjectRequest{
		// TODO: Fill request struct fields.
		// See https://pkg.go.dev/cloud.google.com/go/storage/internal/apiv2/storagepb#UpdateObjectRequest.
	}
	resp, err := c.UpdateObject(ctx, req)
	if err != nil {
		// TODO: Handle error.
	}
	// TODO: Use resp.
	_ = resp
}

Output:

func (*Client) WriteObject 

func (c *Client) WriteObject(ctx context.Context, opts ...gax.CallOption) (storagepb.Storage_WriteObjectClient, error)

WriteObject 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. Even though the data isn’t written, it may still
incur a performance cost over resuming at the correct write offset.
This behavior can make client-side handling simpler in some cases.

Clients must only send data that is a multiple of 256 KiB per message,
unless the object is being finished with finish_write set to true.

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.

Alternatively, the BidiWriteObject operation may be used to write an object with controls over flushing and the ability to fetch the ability to determine the current persisted size.

IAM Permissions:

Requires storage.objects.create IAM permission (at https://cloud.google.com/iam/docs/overview#permissions) on the bucket.

type ObjectIterator added in v1.19.0 

type ObjectIterator struct {

	// Response is the raw response for the current page.
	// It must be cast to the RPC response type.
	// Calling Next() or InternalFetch() updates this value.
	Response interface{}

	// InternalFetch is for use by the Google Cloud Libraries only.
	// It is not part of the stable interface of this package.
	//
	// InternalFetch returns results from a single call to the underlying RPC.
	// The number of results is no greater than pageSize.
	// If there are no more results, nextPageToken is empty and err is nil.
	InternalFetch func(pageSize int, pageToken string) (results []*storagepb.Object, nextPageToken string, err error)
	// contains filtered or unexported fields
}

ObjectIterator manages a stream of *storagepb.Object.

func (*ObjectIterator) All added in v1.44.0 

func (it *ObjectIterator) All() iter.Seq2[*storagepb.Object, error]

All returns an iterator. If an error is returned by the iterator, the iterator will stop after that iteration.

func (*ObjectIterator) Next added in v1.19.0 

func (it *ObjectIterator) Next() (*storagepb.Object, error)

Next returns the next result. Its second return value is iterator.Done if there are no more results. Once Next returns Done, all subsequent calls will return Done.

func (*ObjectIterator) PageInfo added in v1.19.0 

func (it *ObjectIterator) PageInfo() *iterator.PageInfo

PageInfo supports pagination. See the google.golang.org/api/iterator package for details.

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