Class: Google::Cloud::Storage::Bucket

Inherits:
Object
  • Object
show all
Defined in:
lib/google/cloud/storage/bucket.rb,
lib/google/cloud/storage/bucket/acl.rb,
lib/google/cloud/storage/bucket/cors.rb,
lib/google/cloud/storage/bucket/list.rb,
lib/google/cloud/storage/bucket/lifecycle.rb

Overview

Bucket

Represents a Storage bucket. Belongs to a Project and has many Files.

Examples:

require "google/cloud/storage"

storage = Google::Cloud::Storage.new

bucket = storage.bucket "my-bucket"
file = bucket.file "path/to/my-file.ext"

Direct Known Subclasses

Updater

Defined Under Namespace

Classes: Acl, Cors, DefaultAcl, Lifecycle, List, Updater

Instance Attribute Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#user_project ⇒ Object

A boolean value or a project ID string to indicate the project to be billed for operations on the bucket and its files. If this attribute is set to true, transit costs for operations on the bucket will be billed to the current project for this client. (See Project#project for the ID of the current project.) If this attribute is set to a project ID, and that project is authorized for the currently authenticated service account, transit costs will be billed to that project. This attribute is required with requester pays-enabled buckets. The default is nil.

In general, this attribute should be set when first retrieving the bucket by providing the user_project option to Project#bucket.

See also #requester_pays= and #requester_pays.

Examples:

Setting a non-default project:

require "google/cloud/storage"

storage = Google::Cloud::Storage.new

bucket = storage.bucket "other-project-bucket", user_project: true
files = bucket.files # Billed to current project
bucket.user_project = "my-other-project"
files = bucket.files # Billed to "my-other-project"


83
84
85
 
# File 'lib/google/cloud/storage/bucket.rb', line 83

def user_project
  @user_project
end

Instance Method Details

#acl ⇒ Bucket::Acl

The Acl instance used to control access to the bucket.

A bucket has owners, writers, and readers. Permissions can be granted to an individual user's email address, a group's email address, as well as many predefined lists.

Examples:

Grant access to a user by prepending "user-" to an email:

require "google/cloud/storage"

storage = Google::Cloud::Storage.new

bucket = storage.bucket "my-todo-app"

email = "[email protected]"
bucket.acl.add_reader "user-#{email}"

Grant access to a group by prepending "group-" to an email:

require "google/cloud/storage"

storage = Google::Cloud::Storage.new

bucket = storage.bucket "my-todo-app"

email = "[email protected]"
bucket.acl.add_reader "group-#{email}"

Or, grant access via a predefined permissions list:

require "google/cloud/storage"

storage = Google::Cloud::Storage.new

bucket = storage.bucket "my-todo-app"

bucket.acl.public!

Returns:

See Also:



2350
2351
2352
 
# File 'lib/google/cloud/storage/bucket.rb', line 2350

def acl
  @acl ||= Bucket::Acl.new self
end

#api_url ⇒ String

A URL that can be used to access the bucket using the REST API.

Returns:

  • (String) 


126
127
128
 
# File 'lib/google/cloud/storage/bucket.rb', line 126

def api_url
  @gapi.self_link
end

#compose(sources, destination, acl: nil, encryption_key: nil, if_source_generation_match: nil, if_generation_match: nil, if_metageneration_match: nil) {|file| ... } ⇒ Google::Cloud::Storage::File Also known as: compose_file, combine

Concatenates a list of existing files in the bucket into a new file in the bucket. There is a limit (currently 32) to the number of files that can be composed in a single operation.

To compose files encrypted with a customer-supplied encryption key, use the encryption_key option. All source files must have been encrypted with the same key, and the resulting destination file will also be encrypted with the same key.

Examples:

require "google/cloud/storage"

storage = Google::Cloud::Storage.new

bucket = storage.bucket "my-bucket"

sources = ["path/to/my-file-1.ext", "path/to/my-file-2.ext"]

new_file = bucket.compose sources, "path/to/new-file.ext"

Set the properties of the new file in a block:

require "google/cloud/storage"

storage = Google::Cloud::Storage.new

bucket = storage.bucket "my-bucket"

sources = ["path/to/my-file-1.ext", "path/to/my-file-2.ext"]

new_file = bucket.compose sources, "path/to/new-file.ext" do |f|
  f.cache_control = "private, max-age=0, no-cache"
  f.content_disposition = "inline; filename=filename.ext"
  f.content_encoding = "deflate"
  f.content_language = "de"
  f.content_type = "application/json"
end

Specify the generation of source files (but skip retrieval):

require "google/cloud/storage"

storage = Google::Cloud::Storage.new

bucket = storage.bucket "my-bucket"

file_1 = bucket.file "path/to/my-file-1.ext",
                     generation: 1490390259479000, skip_lookup: true
file_2 = bucket.file "path/to/my-file-2.ext",
                     generation: 1490310974144000, skip_lookup: true

new_file = bucket.compose [file_1, file_2], "path/to/new-file.ext"

Parameters:

  • sources (Array<String, Google::Cloud::Storage::File>) —

    The list of source file names or objects that will be concatenated into a single file.

  • destination (String) —

    The name of the new file.

  • acl (String) (defaults to: nil) —

    A predefined set of access controls to apply to this file.

    Acceptable values are:

    • auth, auth_read, authenticated, authenticated_read, authenticatedRead - File owner gets OWNER access, and allAuthenticatedUsers get READER access.
    • owner_full, bucketOwnerFullControl - File owner gets OWNER access, and project team owners get OWNER access.
    • owner_read, bucketOwnerRead - File owner gets OWNER access, and project team owners get READER access.
    • private - File owner gets OWNER access.
    • project_private, projectPrivate - File owner gets OWNER access, and project team members get access according to their roles.
    • public, public_read, publicRead - File owner gets OWNER access, and allUsers get READER access.
  • encryption_key (String, nil) (defaults to: nil) —

    Optional. The customer-supplied, AES-256 encryption key used to encrypt the source files, if one was used. All source files must have been encrypted with the same key, and the resulting destination file will also be encrypted with the key.

  • if_source_generation_match (Array<Integer>) (defaults to: nil) —

    Makes the operation conditional on whether the source files' current generations match the given values. The list must match sources item-to-item.

  • if_generation_match (Integer) (defaults to: nil) —

    Makes the operation conditional on whether the destination file's current generation matches the given value. Setting to 0 makes the operation succeed only if there are no live versions of the file.

  • if_metageneration_match (Integer) (defaults to: nil) —

    Makes the operation conditional on whether the destination file's current metageneration matches the given value.

Yields:

  • (file) —

    A block yielding a delegate file object for setting the properties of the destination file.

Returns:



1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
 
# File 'lib/google/cloud/storage/bucket.rb', line 1697

def compose sources,
            destination,
            acl: nil,
            encryption_key: nil,
            if_source_generation_match: nil,
            if_generation_match: nil,
            if_metageneration_match: nil
  ensure_service!
  sources = Array sources
  if sources.size < 2
    raise ArgumentError, "must provide at least two source files"
  end

  destination_gapi = nil
  if block_given?
    destination_gapi = API::Object.new
    updater = File::Updater.new destination_gapi
    yield updater
    updater.check_for_changed_metadata!
  end

  acl_rule = File::Acl.predefined_rule_for acl
  gapi = service.compose_file name,
                              sources,
                              destination,
                              destination_gapi,
                              acl: acl_rule,
                              key: encryption_key,
                              if_source_generation_match: if_source_generation_match,
                              if_generation_match: if_generation_match,
                              if_metageneration_match: if_metageneration_match,
                              user_project: user_project
  File.from_gapi gapi, service, user_project: user_project
end

#cors {|cors| ... } ⇒ Bucket::Cors

Returns the current CORS configuration for a static website served from the bucket.

The return value is a frozen (unmodifiable) array of hashes containing the attributes specified for the Bucket resource field cors.

This method also accepts a block for updating the bucket's CORS rules. See Cors for details.

Examples:

Retrieving the bucket's CORS rules.

require "google/cloud/storage"

storage = Google::Cloud::Storage.new

bucket = storage.bucket "my-todo-app"
bucket.cors.size #=> 2
rule = bucket.cors.first
rule.origin #=> ["http://example.org"]
rule.methods #=> ["GET","POST","DELETE"]
rule.headers #=> ["X-My-Custom-Header"]
rule.max_age #=> 3600

Updating the bucket's CORS rules inside a block.

require "google/cloud/storage"

storage = Google::Cloud::Storage.new
bucket = storage.bucket "my-todo-app"

bucket.update do |b|
  b.cors do |c|
    c.add_rule ["http://example.org", "https://example.org"],
               "*",
               headers: ["X-My-Custom-Header"],
               max_age: 3600
  end
end

Yields:

  • (cors) —

    a block for setting CORS rules

Yield Parameters:

Returns:

See Also:



195
196
197
198
199
200
201
202
203
204
205
 
# File 'lib/google/cloud/storage/bucket.rb', line 195

def cors
  cors_builder = Bucket::Cors.from_gapi @gapi.cors_configurations
  if block_given?
    yield cors_builder
    if cors_builder.changed?
      @gapi.cors_configurations = cors_builder.to_gapi
      patch_gapi! :cors_configurations
    end
  end
  cors_builder.freeze # always return frozen objects
end

#create_file(file, path = nil, acl: nil, cache_control: nil, content_disposition: nil, content_encoding: nil, content_language: nil, content_type: nil, custom_time: nil, checksum: nil, crc32c: nil, md5: nil, metadata: nil, storage_class: nil, encryption_key: nil, kms_key: nil, temporary_hold: nil, event_based_hold: nil, if_generation_match: nil, if_generation_not_match: nil, if_metageneration_match: nil, if_metageneration_not_match: nil) ⇒ Google::Cloud::Storage::File Also known as: upload_file, new_file

Creates a new File object by providing a path to a local file (or any File-like object such as StringIO) to upload, along with the path at which to store it in the bucket.

Customer-supplied encryption keys

By default, Google Cloud Storage manages server-side encryption keys on your behalf. However, a customer-supplied encryption key can be provided with the encryption_key option. If given, the same key must be provided to subsequently download or copy the file. If you use customer-supplied encryption keys, you must securely manage your keys and ensure that they are not lost. Also, please note that file metadata is not encrypted, with the exception of the CRC32C checksum and MD5 hash. The names of files and buckets are also not encrypted, and you can read or update the metadata of an encrypted file without providing the encryption key.

Examples:

require "google/cloud/storage"

storage = Google::Cloud::Storage.new

bucket = storage.bucket "my-bucket"

bucket.create_file "path/to/local.file.ext"

Specifying a destination path:

require "google/cloud/storage"

storage = Google::Cloud::Storage.new

bucket = storage.bucket "my-bucket"

bucket.create_file "path/to/local.file.ext",
                   "destination/path/file.ext"

Providing a customer-supplied encryption key:

require "google/cloud/storage"

storage = Google::Cloud::Storage.new
bucket = storage.bucket "my-bucket"

# Key generation shown for example purposes only. Write your own.
cipher = OpenSSL::Cipher.new "aes-256-cfb"
cipher.encrypt
key = cipher.random_key

bucket.create_file "path/to/local.file.ext",
                   "destination/path/file.ext",
                   encryption_key: key

# Store your key and hash securely for later use.
file = bucket.file "destination/path/file.ext",
                   encryption_key: key

Providing a customer-managed Cloud KMS encryption key:

require "google/cloud/storage"

storage = Google::Cloud::Storage.new
bucket = storage.bucket "my-bucket"

# KMS key ring must use the same location as the bucket.
kms_key_name = "projects/a/locations/b/keyRings/c/cryptoKeys/d"

bucket.create_file "path/to/local.file.ext",
                   "destination/path/file.ext",
                   kms_key: kms_key_name

file = bucket.file "destination/path/file.ext"
file.kms_key #=> kms_key_name

Create a file with gzip-encoded data.

require "zlib"
require "google/cloud/storage"

storage = Google::Cloud::Storage.new

gz = StringIO.new ""
z = Zlib::GzipWriter.new gz
z.write "Hello world!"
z.close
data = StringIO.new gz.string

bucket = storage.bucket "my-bucket"

bucket.create_file data, "path/to/gzipped.txt",
                   content_encoding: "gzip"

file = bucket.file "path/to/gzipped.txt"

# The downloaded data is decompressed by default.
file.download "path/to/downloaded/hello.txt"

# The downloaded data remains compressed with skip_decompress.
file.download "path/to/downloaded/gzipped.txt",
              skip_decompress: true

Parameters:

  • file (String, ::File) —

    Path of the file on the filesystem to upload. Can be an File object, or File-like object such as StringIO. (If the object does not have path, a path argument must be also be provided.)

  • path (String) (defaults to: nil) —

    Path to store the file in Google Cloud Storage.

  • acl (String) (defaults to: nil) —

    A predefined set of access controls to apply to this file.

    Acceptable values are:

    • auth, auth_read, authenticated, authenticated_read, authenticatedRead - File owner gets OWNER access, and allAuthenticatedUsers get READER access.
    • owner_full, bucketOwnerFullControl - File owner gets OWNER access, and project team owners get OWNER access.
    • owner_read, bucketOwnerRead - File owner gets OWNER access, and project team owners get READER access.
    • private - File owner gets OWNER access.
    • project_private, projectPrivate - File owner gets OWNER access, and project team members get access according to their roles.
    • public, public_read, publicRead - File owner gets OWNER access, and allUsers get READER access.
  • cache_control (String) (defaults to: nil) —

    The Cache-Control response header to be returned when the file is downloaded.

  • content_disposition (String) (defaults to: nil) —

    The Content-Disposition response header to be returned when the file is downloaded.

  • content_encoding (String) (defaults to: nil) —

    The Content-Encoding response header to be returned when the file is downloaded. For example, content_encoding: "gzip" can indicate to clients that the uploaded data is gzip-compressed. However, there is no check to guarantee the specified Content-Encoding has actually been applied to the file data, and incorrectly specifying the file's encoding could lead to unintended behavior on subsequent download requests.

  • content_language (String) (defaults to: nil) —

    The Content-Language response header to be returned when the file is downloaded.

  • content_type (String) (defaults to: nil) —

    The Content-Type response header to be returned when the file is downloaded.

  • custom_time (DateTime) (defaults to: nil) —

    A custom time specified by the user for the file. Once set, custom_time can't be unset, and it can only be changed to a time in the future. If custom_time must be unset, you must either perform a rewrite operation, or upload the data again and create a new file.

  • checksum (Symbol, nil) (defaults to: nil) —

    The type of checksum for the client to automatically calculate and send with the create request to verify the integrity of the object. If provided, Cloud Storage will only create the file if the value calculated by the client matches the value calculated by the service.

    Acceptable values are:

    • md5 - Calculate and provide a checksum using the MD5 hash.
    • crc32c - Calculate and provide a checksum using the CRC32c hash.
    • all - Calculate and provide checksums for all available verifications.

    Optional. The default is nil. Do not provide if also providing a corresponding crc32c or md5 argument. See Validation for more information.

  • crc32c (String) (defaults to: nil) —

    The CRC32c checksum of the file data, as described in RFC 4960, Appendix B. If provided, Cloud Storage will only create the file if the value matches the value calculated by the service. Do not provide if also providing a checksum: :crc32c or checksum: :all argument. See Validation for more information.

  • md5 (String) (defaults to: nil) —

    The MD5 hash of the file data. If provided, Cloud Storage will only create the file if the value matches the value calculated by the service. Do not provide if also providing a checksum: :md5 or checksum: :all argument. See Validation for more information.

  • metadata (Hash) (defaults to: nil) —

    A hash of custom, user-provided web-safe keys and arbitrary string values that will returned with requests for the file as "x-goog-meta-" response headers.

  • storage_class (Symbol, String) (defaults to: nil) —

    Storage class of the file. Determines how the file is stored and determines the SLA and the cost of storage. Accepted values include :standard, :nearline, :coldline, and :archive, as well as the equivalent strings returned by #storage_class. :multi_regional, :regional, and durable_reduced_availability are accepted legacy storage classes. For more information, see Storage Classes and Per-Object Storage Class. The default value is the default storage class for the bucket.

  • encryption_key (String) (defaults to: nil) —

    Optional. A customer-supplied, AES-256 encryption key that will be used to encrypt the file. Do not provide if kms_key is used.

  • kms_key (String) (defaults to: nil) —

    Optional. Resource name of the Cloud KMS key, of the form projects/my-prj/locations/kr-loc/keyRings/my-kr/cryptoKeys/my-key, that will be used to encrypt the file. The KMS key ring must use the same location as the bucket.The Service Account associated with your project requires access to this encryption key. Do not provide if encryption_key is used.

  • if_generation_match (Integer) (defaults to: nil) —

    Makes the operation conditional on whether the file's current generation matches the given value. Setting to 0 makes the operation succeed only if there are no live versions of the file.

  • if_generation_not_match (Integer) (defaults to: nil) —

    Makes the operation conditional on whether the file's current generation does not match the given value. If no live file exists, the precondition fails. Setting to 0 makes the operation succeed only if there is a live version of the file.

  • if_metageneration_match (Integer) (defaults to: nil) —

    Makes the operation conditional on whether the file's current metageneration matches the given value.

  • if_metageneration_not_match (Integer) (defaults to: nil) —

    Makes the operation conditional on whether the file's current metageneration does not match the given value.

Returns:

Raises:

  • (ArgumentError) 


1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
 
# File 'lib/google/cloud/storage/bucket.rb', line 1543

def create_file file,
                path = nil,
                acl: nil,
                cache_control: nil,
                content_disposition: nil,
                content_encoding: nil,
                content_language: nil,
                content_type: nil,
                custom_time: nil,
                checksum: nil,
                crc32c: nil,
                md5: nil,
                metadata: nil,
                storage_class: nil,
                encryption_key: nil,
                kms_key: nil,
                temporary_hold: nil,
                event_based_hold: nil,
                if_generation_match: nil,
                if_generation_not_match: nil,
                if_metageneration_match: nil,
                if_metageneration_not_match: nil
  ensure_service!
  ensure_io_or_file_exists! file
  path ||= file.path if file.respond_to? :path
  path ||= file if file.is_a? String
  raise ArgumentError, "must provide path" if path.nil?
  crc32c = crc32c_for file, checksum, crc32c
  md5 = md5_for file, checksum, md5

  gapi = service.insert_file name,
                             file,
                             path,
                             acl: File::Acl.predefined_rule_for(acl),
                             md5: md5,
                             cache_control: cache_control,
                             content_type: content_type,
                             custom_time: custom_time,
                             content_disposition: content_disposition,
                             crc32c: crc32c,
                             content_encoding: content_encoding,
                             metadata: metadata,
                             content_language: content_language,
                             key: encryption_key,
                             kms_key: kms_key,
                             storage_class: storage_class_for(storage_class),
                             temporary_hold: temporary_hold,
                             event_based_hold: event_based_hold,
                             if_generation_match: if_generation_match,
                             if_generation_not_match: if_generation_not_match,
                             if_metageneration_match: if_metageneration_match,
                             if_metageneration_not_match: if_metageneration_not_match,
                             user_project: user_project
  File.from_gapi gapi, service, user_project: user_project
end

#create_notification(topic, custom_attrs: nil, event_types: nil, prefix: nil, payload: nil) ⇒ Google::Cloud::Storage::Notification Also known as: new_notification

Creates a new Pub/Sub notification subscription for the bucket.

Examples:

require "google/cloud/pubsub"
require "google/cloud/storage"

pubsub = Google::Cloud::Pubsub.new
storage = Google::Cloud::Storage.new

topic = pubsub.create_topic "my-topic"
topic.policy do |p|
  p.add "roles/pubsub.publisher",
        "serviceAccount:#{storage.}"
end

bucket = storage.bucket "my-bucket"

notification = bucket.create_notification topic.name

Parameters:

  • topic (String) —

    The name of the Cloud PubSub topic to which the notification subscription will publish.

  • custom_attrs (Hash(String => String)) (defaults to: nil) —

    The custom attributes for the notification. An optional list of additional attributes to attach to each Cloud Pub/Sub message published for the notification subscription.

  • event_types (Symbol, String, Array<Symbol, String>) (defaults to: nil) —

    The event types for the notification subscription. If provided, messages will only be sent for the listed event types. If empty, messages will be sent for all event types.

    Acceptable values are:

    • :finalize - Sent when a new object (or a new generation of an existing object) is successfully created in the bucket. This includes copying or rewriting an existing object. A failed upload does not trigger this event.
    • :update - Sent when the metadata of an existing object changes.
    • :delete - Sent when an object has been permanently deleted. This includes objects that are overwritten or are deleted as part of the bucket's lifecycle configuration. For buckets with object versioning enabled, this is not sent when an object is archived (see OBJECT_ARCHIVE), even if archival occurs via the File#delete method.
    • :archive - Only sent when the bucket has enabled object versioning. This event indicates that the live version of an object has become an archived version, either because it was archived or because it was overwritten by the upload of an object of the same name.
  • prefix (String) (defaults to: nil) —

    The file name prefix for the notification subscription. If provided, the notification will only be applied to file names that begin with this prefix.

  • payload (Symbol, String, Boolean) (defaults to: nil) —

    The desired content of the Pub/Sub message payload. Acceptable values are:

    • :json or true - The Pub/Sub message payload will be a UTF-8 string containing the resource representation of the file's metadata.
    • :none or false - No payload is included with the notification.

    The default value is :json.

Returns:

See Also:



2787
2788
2789
2790
2791
2792
2793
2794
2795
2796
2797
 
# File 'lib/google/cloud/storage/bucket.rb', line 2787

def create_notification topic, custom_attrs: nil, event_types: nil,
                        prefix: nil, payload: nil
  ensure_service!

  gapi = service.insert_notification name, topic, custom_attrs: custom_attrs,
                                                  event_types: event_types,
                                                  prefix: prefix,
                                                  payload: payload,
                                                  user_project: user_project
  Notification.from_gapi name, gapi, service, user_project: user_project
end

#created_at ⇒ DateTime

Creation time of the bucket.

Returns:

  • (DateTime) 


135
136
137
 
# File 'lib/google/cloud/storage/bucket.rb', line 135

def created_at
  @gapi.time_created
end

#default_acl ⇒ Bucket::DefaultAcl

The DefaultAcl instance used to control access to the bucket's files.

A bucket's files have owners, writers, and readers. Permissions can be granted to an individual user's email address, a group's email address, as well as many predefined lists.

Examples:

Grant access to a user by prepending "user-" to an email:

require "google/cloud/storage"

storage = Google::Cloud::Storage.new

bucket = storage.bucket "my-todo-app"

email = "[email protected]"
bucket.default_acl.add_reader "user-#{email}"

Grant access to a group by prepending "group-" to an email

require "google/cloud/storage"

storage = Google::Cloud::Storage.new

bucket = storage.bucket "my-todo-app"

email = "[email protected]"
bucket.default_acl.add_reader "group-#{email}"

Or, grant access via a predefined permissions list:

require "google/cloud/storage"

storage = Google::Cloud::Storage.new

bucket = storage.bucket "my-todo-app"

bucket.default_acl.public!

Returns:

See Also:



2396
2397
2398
 
# File 'lib/google/cloud/storage/bucket.rb', line 2396

def default_acl
  @default_acl ||= Bucket::DefaultAcl.new self
end

#default_event_based_hold=(new_default_event_based_hold) ⇒ Object

Updates the default event-based hold field for the bucket. This field controls the initial state of the event_based_hold field for newly-created files in the bucket.

See File#event_based_hold? and File#set_event_based_hold!.

To pass metageneration preconditions, call this method within a block passed to #update.

Examples:

require "google/cloud/storage"

storage = Google::Cloud::Storage.new

bucket = storage.bucket "my-bucket"

bucket.update do |b|
  b.retention_period = 2592000 # 30 days in seconds
  b.default_event_based_hold = true
end

file = bucket.create_file "path/to/local.file.ext"
file.event_based_hold? # true
file.delete # raises Google::Cloud::PermissionDeniedError
file.release_event_based_hold!

# The end of the retention period is calculated from the time that
# the event-based hold was released.
file.retention_expires_at

Parameters:

  • new_default_event_based_hold (Boolean) —

    The default event-based hold field for the bucket.



775
776
777
778
 
# File 'lib/google/cloud/storage/bucket.rb', line 775

def default_event_based_hold= new_default_event_based_hold
  @gapi.default_event_based_hold = new_default_event_based_hold
  patch_gapi! :default_event_based_hold
end

#default_event_based_hold? ⇒ Boolean

Whether the event_based_hold field for newly-created files in the bucket will be initially set to true. See #default_event_based_hold=, File#event_based_hold? and File#set_event_based_hold!.

Returns:

  • (Boolean) —

    Returns true if the event_based_hold field for newly-created files in the bucket will be initially set to true, otherwise false.



737
738
739
 
# File 'lib/google/cloud/storage/bucket.rb', line 737

def default_event_based_hold?
  !@gapi.default_event_based_hold.nil? && @gapi.default_event_based_hold
end

#default_kms_key ⇒ String?

The Cloud KMS encryption key that will be used to protect files. For example: projects/a/locations/b/keyRings/c/cryptoKeys/d

Examples:

require "google/cloud/storage"

storage = Google::Cloud::Storage.new

bucket = storage.bucket "my-bucket"

# KMS key ring must use the same location as the bucket.
kms_key_name = "projects/a/locations/b/keyRings/c/cryptoKeys/d"
bucket.default_kms_key = kms_key_name

bucket.default_kms_key #=> kms_key_name

Returns:

  • (String, nil) —

    A Cloud KMS encryption key, or nil if none has been configured.



576
577
578
 
# File 'lib/google/cloud/storage/bucket.rb', line 576

def default_kms_key
  @gapi.encryption&.default_kms_key_name
end

#default_kms_key=(new_default_kms_key) ⇒ Object

Set the Cloud KMS encryption key that will be used to protect files. For example: projects/a/locations/b/keyRings/c/cryptoKeys/d

To pass metageneration preconditions, call this method within a block passed to #update.

Examples:

require "google/cloud/storage"

storage = Google::Cloud::Storage.new

bucket = storage.bucket "my-bucket"

# KMS key ring must use the same location as the bucket.
kms_key_name = "projects/a/locations/b/keyRings/c/cryptoKeys/d"

bucket.default_kms_key = kms_key_name

Delete the default Cloud KMS encryption key:

require "google/cloud/storage"

storage = Google::Cloud::Storage.new

bucket = storage.bucket "my-bucket"

bucket.default_kms_key = nil

Parameters:

  • new_default_kms_key (String, nil) —

    New Cloud KMS key name, or nil to delete the Cloud KMS encryption key.



611
612
613
614
615
 
# File 'lib/google/cloud/storage/bucket.rb', line 611

def default_kms_key= new_default_kms_key
  @gapi.encryption = API::Bucket::Encryption.new \
    default_kms_key_name: new_default_kms_key
  patch_gapi! :encryption
end

#delete(if_metageneration_match: nil, if_metageneration_not_match: nil) ⇒ Boolean

Permanently deletes the bucket. The bucket must be empty before it can be deleted.

The API call to delete the bucket may be retried under certain conditions. See Google::Cloud#storage to control this behavior.

Examples:

require "google/cloud/storage"

storage = Google::Cloud::Storage.new

bucket = storage.bucket "my-bucket"
bucket.delete

Parameters:

  • if_metageneration_match (Integer) (defaults to: nil) —

    Makes the operation conditional on whether the bucket's current metageneration matches the given value.

  • if_metageneration_not_match (Integer) (defaults to: nil) —

    Makes the operation conditional on whether the bucket's current metageneration does not match the given value.

Returns:

  • (Boolean) —

    Returns true if the bucket was deleted.



1187
1188
1189
1190
1191
1192
1193
 
# File 'lib/google/cloud/storage/bucket.rb', line 1187

def delete if_metageneration_match: nil, if_metageneration_not_match: nil
  ensure_service!
  service.delete_bucket name,
                        if_metageneration_match: if_metageneration_match,
                        if_metageneration_not_match: if_metageneration_not_match,
                        user_project: user_project
end

#exists? ⇒ Boolean

Determines whether the bucket exists in the Storage service.

Returns:

  • (Boolean) —

    true if the bucket exists in the Storage service.



2817
2818
2819
2820
2821
2822
2823
2824
2825
2826
 
# File 'lib/google/cloud/storage/bucket.rb', line 2817

def exists?
  # Always true if we have a grpc object
  return true unless lazy?
  # If we have a value, return it
  return @exists unless @exists.nil?
  ensure_gapi!
  @exists = true
rescue Google::Cloud::NotFoundError
  @exists = false
end

#file(path, generation: nil, if_generation_match: nil, if_generation_not_match: nil, if_metageneration_match: nil, if_metageneration_not_match: nil, skip_lookup: nil, encryption_key: nil) ⇒ Google::Cloud::Storage::File? Also known as: find_file

Retrieves a file matching the path.

If a customer-supplied encryption key was used with #create_file, the encryption_key option must be provided or else the file's CRC32C checksum and MD5 hash will not be returned.

Examples:

require "google/cloud/storage"

storage = Google::Cloud::Storage.new

bucket = storage.bucket "my-bucket"

file = bucket.file "path/to/my-file.ext"
puts file.name

Parameters:

  • path (String) —

    Name (path) of the file.

  • generation (Integer) (defaults to: nil) —

    When present, selects a specific revision of this object. Default is the latest version.

  • if_generation_match (Integer) (defaults to: nil) —

    Makes the operation conditional on whether the file's current generation matches the given value. Setting to 0 makes the operation succeed only if there are no live versions of the file.

  • if_generation_not_match (Integer) (defaults to: nil) —

    Makes the operation conditional on whether the file's current generation does not match the given value. If no live file exists, the precondition fails. Setting to 0 makes the operation succeed only if there is a live version of the file.

  • if_metageneration_match (Integer) (defaults to: nil) —

    Makes the operation conditional on whether the file's current metageneration matches the given value.

  • if_metageneration_not_match (Integer) (defaults to: nil) —

    Makes the operation conditional on whether the file's current metageneration does not match the given value.

  • skip_lookup (Boolean) (defaults to: nil) —

    Optionally create a Bucket object without verifying the bucket resource exists on the Storage service. Calls made on this object will raise errors if the bucket resource does not exist. Default is false.

  • encryption_key (String) (defaults to: nil) —

    Optional. The customer-supplied, AES-256 encryption key used to encrypt the file, if one was provided to #create_file. (Not used if skip_lookup is also set.)

Returns:



1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
 
# File 'lib/google/cloud/storage/bucket.rb', line 1300

def file path,
         generation: nil,
         if_generation_match: nil,
         if_generation_not_match: nil,
         if_metageneration_match: nil,
         if_metageneration_not_match: nil,
         skip_lookup: nil,
         encryption_key: nil
  ensure_service!
  if skip_lookup
    return File.new_lazy name, path, service,
                         generation: generation,
                         user_project: user_project
  end
  gapi = service.get_file name, path, generation: generation,
                                      if_generation_match: if_generation_match,
                                      if_generation_not_match: if_generation_not_match,
                                      if_metageneration_match: if_metageneration_match,
                                      if_metageneration_not_match: if_metageneration_not_match,
                                      key: encryption_key,
                                      user_project: user_project
  File.from_gapi gapi, service, user_project: user_project
rescue Google::Cloud::NotFoundError
  nil
end

#files(prefix: nil, delimiter: nil, token: nil, max: nil, versions: nil) ⇒ Array<Google::Cloud::Storage::File> Also known as: find_files

Retrieves a list of files matching the criteria.

Examples:

require "google/cloud/storage"

storage = Google::Cloud::Storage.new

bucket = storage.bucket "my-bucket"
files = bucket.files
files.each do |file|
  puts file.name
end

Retrieve all files: (See File::List#all)

require "google/cloud/storage"

storage = Google::Cloud::Storage.new

bucket = storage.bucket "my-bucket"
files = bucket.files
files.all do |file|
  puts file.name
end

Parameters:

  • prefix (String) (defaults to: nil) —

    Filter results to files whose names begin with this prefix.

  • delimiter (String) (defaults to: nil) —

    Returns results in a directory-like mode. items will contain only objects whose names, aside from the prefix, do not contain delimiter. Objects whose names, aside from the prefix, contain delimiter will have their name, truncated after the delimiter, returned in prefixes. Duplicate prefixes are omitted.

  • token (String) (defaults to: nil) —

    A previously-returned page token representing part of the larger set of results to view.

  • max (Integer) (defaults to: nil) —

    Maximum number of items plus prefixes to return. As duplicate prefixes are omitted, fewer total results may be returned than requested. The default value of this parameter is 1,000 items.

  • versions (Boolean) (defaults to: nil) —

    If true, lists all versions of an object as distinct results. The default is false. For more information, see Object Versioning .

Returns:



1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
 
# File 'lib/google/cloud/storage/bucket.rb', line 1242

def files prefix: nil, delimiter: nil, token: nil, max: nil,
          versions: nil
  ensure_service!
  gapi = service.list_files name, prefix: prefix, delimiter: delimiter,
                                  token: token, max: max,
                                  versions: versions,
                                  user_project: user_project
  File::List.from_gapi gapi, service, name, prefix, delimiter, max,
                       versions, user_project: user_project
end

#generate_signed_post_policy_v4(path, issuer: nil, client_email: nil, signing_key: nil, private_key: nil, signer: nil, expires: nil, fields: nil, conditions: nil, scheme: "https", virtual_hosted_style: nil, bucket_bound_hostname: nil) ⇒ PostObject

Generate a PostObject that includes the fields and URL to upload objects via HTML forms. The resulting PostObject is based on a policy document created from the method arguments. This policy provides authorization to ensure that the HTML form can upload files into the bucket. See Signatures - Policy document.

Generating a PostObject requires service account credentials, either by connecting with a service account when calling Google::Cloud.storage, or by passing in the service account issuer and signing_key values. Although the private key can be passed as a string for convenience, creating and storing an instance of OpenSSL::PKey::RSA is more efficient when making multiple calls to generate_signed_post_policy_v4.

A SignedUrlUnavailable is raised if the service account credentials are missing. Service account credentials are acquired by following the steps in Service Account Authentication.

Examples:

require "google/cloud/storage"

storage = Google::Cloud::Storage.new

bucket = storage.bucket "my-todo-app"

conditions = [["starts-with", "$acl","public"]]
post = bucket.generate_signed_post_policy_v4 "avatars/heidi/400x400.png",
                                             expires:    10,
                                             conditions: conditions

post.url #=> "https://storage.googleapis.com/my-todo-app/"
post.fields["key"] #=> "my-todo-app/avatars/heidi/400x400.png"
post.fields["policy"] #=> "ABC...XYZ"
post.fields["x-goog-algorithm"] #=> "GOOG4-RSA-SHA256"
post.fields["x-goog-credential"] #=> "[email protected]/20200123/auto/storage/goog4_request"
post.fields["x-goog-date"] #=> "20200128T000000Z"
post.fields["x-goog-signature"] #=> "4893a0e...cd82"

Using Cloud IAMCredentials signBlob to create the signature:

require "google/cloud/storage"
require "google/apis/iamcredentials_v1"
require "googleauth"

# Issuer is the service account email that the Signed URL will be signed with
# and any permission granted in the Signed URL must be granted to the
# Google Service Account.
issuer = "[email protected]"

# Create a lambda that accepts the string_to_sign
signer = lambda do |string_to_sign|
  IAMCredentials = Google::Apis::IamcredentialsV1
  iam_client = IAMCredentials::IAMCredentialsService.new

  # Get the environment configured authorization
  scopes = ["https://www.googleapis.com/auth/iam"]
  iam_client.authorization = Google::Auth.get_application_default scopes

  request = Google::Apis::IamcredentialsV1::SignBlobRequest.new(
    payload: string_to_sign
  )
  resource = "projects/-/serviceAccounts/#{issuer}"
  response = iam_client. resource, request
  response.signed_blob
end

storage = Google::Cloud::Storage.new

bucket = storage.bucket "my-todo-app"
conditions = [["starts-with", "$acl","public"]]
post = bucket.generate_signed_post_policy_v4 "avatars/heidi/400x400.png",
                                             expires:    10,
                                             conditions: conditions,
                                             issuer:     issuer,
                                             signer:     signer

post.url #=> "https://storage.googleapis.com/my-todo-app/"
post.fields["key"] #=> "my-todo-app/avatars/heidi/400x400.png"
post.fields["policy"] #=> "ABC...XYZ"
post.fields["x-goog-algorithm"] #=> "GOOG4-RSA-SHA256"
post.fields["x-goog-credential"] #=> "[email protected]/20200123/auto/storage/goog4_request"
post.fields["x-goog-date"] #=> "20200128T000000Z"
post.fields["x-goog-signature"] #=> "4893a0e...cd82"

Parameters:

  • path (String) —

    Path to the file in Google Cloud Storage.

  • issuer (String) (defaults to: nil) —

    Service Account's Client Email.

  • client_email (String) (defaults to: nil) —

    Service Account's Client Email.

  • signing_key (OpenSSL::PKey::RSA, String, Proc) (defaults to: nil) —

    Service Account's Private Key or a Proc that accepts a single String parameter and returns a RSA SHA256 signature using a valid Google Service Account Private Key.

  • private_key (OpenSSL::PKey::RSA, String, Proc) (defaults to: nil) —

    Service Account's Private Key or a Proc that accepts a single String parameter and returns a RSA SHA256 signature using a valid Google Service Account Private Key.

  • signer (OpenSSL::PKey::RSA, String, Proc) (defaults to: nil) —

    Service Account's Private Key or a Proc that accepts a single String parameter and returns a RSA SHA256 signature using a valid Google Service Account Private Key.

    When using this method in environments such as GAE Flexible Environment, GKE, or Cloud Functions where the private key is unavailable, it may be necessary to provide a Proc (or lambda) via the signer parameter. This Proc should return a signature created using a RPC call to the Service Account Credentials signBlob method as shown in the example below.

  • expires (Integer) (defaults to: nil) —

    The number of seconds until the URL expires. The default is 604800 (7 days).

  • fields (Hash{String => String}) (defaults to: nil) —

    User-supplied form fields such as acl, cache-control, success_action_status, and success_action_redirect. Optional. See Upload an object with HTML forms - Form fields.

  • conditions (Array<Hash{String => String}|Array<String>>) (defaults to: nil) —

    An array of policy conditions that every upload must satisfy. For example: [["eq", "$Content-Type", "image/jpeg"]]. Optional. See Signatures - Policy document.

  • scheme (String) (defaults to: "https") —

    The URL scheme. The default value is HTTPS.

  • virtual_hosted_style (Boolean) (defaults to: nil) —

    Whether to use a virtual hosted-style hostname, which adds the bucket into the host portion of the URI rather than the path, e.g. https://mybucket.storage.googleapis.com/.... The default value of false uses the form of https://storage.googleapis.com/mybucket.

  • bucket_bound_hostname (String) (defaults to: nil) —

    Use a bucket-bound hostname, which replaces the storage.googleapis.com host with the name of a CNAME bucket, e.g. a bucket named gcs-subdomain.my.domain.tld, or a Google Cloud Load Balancer which routes to a bucket you own, e.g. my-load-balancer-domain.tld.

Returns:

  • (PostObject) —

    An object containing the URL, fields, and values needed to upload files via HTML forms.

Raises:

See Also:



2282
2283
2284
2285
2286
2287
2288
2289
2290
2291
2292
2293
2294
2295
2296
2297
2298
2299
2300
2301
2302
2303
2304
2305
2306
2307
 
# File 'lib/google/cloud/storage/bucket.rb', line 2282

def generate_signed_post_policy_v4 path,
                                   issuer: nil,
                                   client_email: nil,
                                   signing_key: nil,
                                   private_key: nil,
                                   signer: nil,
                                   expires: nil,
                                   fields: nil,
                                   conditions: nil,
                                   scheme: "https",
                                   virtual_hosted_style: nil,
                                   bucket_bound_hostname: nil
  ensure_service!
  sign = File::SignerV4.from_bucket self, path
  sign.post_object issuer: issuer,
                   client_email: client_email,
                   signing_key: signing_key,
                   private_key: private_key,
                   signer: signer,
                   expires: expires,
                   fields: fields,
                   conditions: conditions,
                   scheme: scheme,
                   virtual_hosted_style: virtual_hosted_style,
                   bucket_bound_hostname: bucket_bound_hostname
end

#id ⇒ String

The ID of the bucket.

Returns:

  • (String) 


108
109
110
 
# File 'lib/google/cloud/storage/bucket.rb', line 108

def id
  @gapi.id
end

#kind ⇒ String

The kind of item this is. For buckets, this is always storage#bucket.

Returns:

  • (String) 


99
100
101
 
# File 'lib/google/cloud/storage/bucket.rb', line 99

def kind
  @gapi.kind
end

#labels ⇒ Hash(String => String)

A hash of user-provided labels. The hash is frozen and changes are not allowed.

Returns:

  • (Hash(String => String)) 


476
477
478
479
480
 
# File 'lib/google/cloud/storage/bucket.rb', line 476

def labels
  m = @gapi.labels
  m = m.to_h if m.respond_to? :to_h
  m.dup.freeze
end

#labels=(labels) ⇒ Object

Updates the hash of user-provided labels.

To pass metageneration preconditions, call this method within a block passed to #update.

Parameters:

  • labels (Hash(String => String)) —

    The user-provided labels.



490
491
492
493
 
# File 'lib/google/cloud/storage/bucket.rb', line 490

def labels= labels
  @gapi.labels = labels
  patch_gapi! :labels
end

#lifecycle {|lifecycle| ... } ⇒ Bucket::Lifecycle

Returns the current Object Lifecycle Management rules configuration for the bucket.

This method also accepts a block for updating the bucket's Object Lifecycle Management rules. See Lifecycle for details.

Examples:

Retrieving a bucket's lifecycle management rules.

require "google/cloud/storage"

storage = Google::Cloud::Storage.new
bucket = storage.bucket "my-bucket"

bucket.lifecycle.size #=> 2
rule = bucket.lifecycle.first
rule.action #=> "SetStorageClass"
rule.storage_class #=> "COLDLINE"
rule.age #=> 10
rule.matches_storage_class #=> ["STANDARD", "NEARLINE"]

Updating the bucket's lifecycle management rules in a block.

require "google/cloud/storage"

storage = Google::Cloud::Storage.new
bucket = storage.bucket "my-bucket"

bucket.update do |b|
  b.lifecycle do |l|
    # Remove the last rule from the array
    l.pop
    # Remove rules with the given condition
    l.delete_if do |r|
      r.matches_storage_class.include? "NEARLINE"
    end
    # Update rules
    l.each do |r|
      r.age = 90 if r.action == "Delete"
    end
    # Add a rule
    l.add_set_storage_class_rule "COLDLINE", age: 10
  end
end

Yields:

  • (lifecycle) —

    a block for setting Object Lifecycle Management rules

Yield Parameters:

  • lifecycle (Bucket::Lifecycle) —

    the object accepting Object Lifecycle Management rules

Returns:

See Also:



262
263
264
265
266
267
268
269
270
271
272
 
# File 'lib/google/cloud/storage/bucket.rb', line 262

def lifecycle
  lifecycle_builder = Bucket::Lifecycle.from_gapi @gapi.lifecycle
  if block_given?
    yield lifecycle_builder
    if lifecycle_builder.changed?
      @gapi.lifecycle = lifecycle_builder.to_gapi
      patch_gapi! :lifecycle
    end
  end
  lifecycle_builder.freeze # always return frozen objects
end

#location ⇒ String

The location of the bucket. Object data for objects in the bucket resides in physical storage within this region. Defaults to US. See the developer's guide for the authoritative list.

Returns:

  • (String)

See Also:



284
285
286
 
# File 'lib/google/cloud/storage/bucket.rb', line 284

def location
  @gapi.location
end

#location_type ⇒ String

The bucket's location type. Location type defines the geographic placement of the bucket's data and affects cost, performance, and availability. There are three possible values:

  • region - Lowest latency within a single region
  • multi-region - Highest availability across largest area
  • dual-region - High availability and low latency across 2 regions

Returns:

  • (String) —

    The location type code: "region", "multi-region", or "dual-region"



300
301
302
 
# File 'lib/google/cloud/storage/bucket.rb', line 300

def location_type
  @gapi.location_type
end

#lock_retention_policy! ⇒ Boolean

PERMANENTLY locks the retention policy (see #retention_period=) on the bucket if one exists. The policy is transitioned to a locked state in which its duration cannot be reduced.

Locked policies can be extended in duration by setting #retention_period= to a higher value. Such an extension is permanent, and it cannot later be reduced. The extended duration will apply retroactively to all files currently in the bucket.

This method also creates a lien on the resourcemanager.projects.delete permission for the project containing the bucket.

The bucket's metageneration value is required for the lock policy API call. Attempting to call this method on a bucket that was loaded with the skip_lookup: true option will result in an error.

Examples:

require "google/cloud/storage"

storage = Google::Cloud::Storage.new

bucket = storage.bucket "my-bucket"

bucket.retention_period = 2592000 # 30 days in seconds
bucket.lock_retention_policy!
bucket.retention_policy_locked? # true

file = bucket.create_file "path/to/local.file.ext"
file.delete # raises Google::Cloud::PermissionDeniedError

# Locked policies can be extended in duration
bucket.retention_period = 7776000 # 90 days in seconds

Returns:

  • (Boolean) —

    Returns true if the lock operation is successful.



818
819
820
821
822
823
 
# File 'lib/google/cloud/storage/bucket.rb', line 818

def lock_retention_policy!
  ensure_service!
  @gapi = service.lock_bucket_retention_policy \
    name, metageneration, user_project: user_project
  true
end

#logging_bucket ⇒ String

The destination bucket name for the bucket's logs.

Returns:

  • (String)

See Also:



311
312
313
 
# File 'lib/google/cloud/storage/bucket.rb', line 311

def logging_bucket
  @gapi.logging&.log_bucket
end

#logging_bucket=(logging_bucket) ⇒ Object

Updates the destination bucket for the bucket's logs.

To pass metageneration preconditions, call this method within a block passed to #update.

Parameters:

  • logging_bucket (String) —

    The bucket to hold the logging output

See Also:



325
326
327
328
329
 
# File 'lib/google/cloud/storage/bucket.rb', line 325

def logging_bucket= logging_bucket
  @gapi.logging ||= API::Bucket::Logging.new
  @gapi.logging.log_bucket = logging_bucket
  patch_gapi! :logging
end

#logging_prefix ⇒ String

The logging object prefix for the bucket's logs. For more information,

Returns:

  • (String)

See Also:



338
339
340
 
# File 'lib/google/cloud/storage/bucket.rb', line 338

def logging_prefix
  @gapi.logging&.log_object_prefix
end

#logging_prefix=(logging_prefix) ⇒ Object

Updates the logging object prefix. This prefix will be used to create log object names for the bucket. It can be at most 900 characters and must be a valid object name. By default, the object prefix is the name of the bucket for which the logs are enabled.

To pass metageneration preconditions, call this method within a block passed to #update.

Parameters:

  • logging_prefix (String) —

    The logging object prefix.

See Also:



357
358
359
360
361
 
# File 'lib/google/cloud/storage/bucket.rb', line 357

def logging_prefix= logging_prefix
  @gapi.logging ||= API::Bucket::Logging.new
  @gapi.logging.log_object_prefix = logging_prefix
  patch_gapi! :logging
end

#metageneration ⇒ Integer

The metadata generation of the bucket.

Returns:

  • (Integer) —

    The metageneration.



144
145
146
 
# File 'lib/google/cloud/storage/bucket.rb', line 144

def metageneration
  @gapi.metageneration
end

#name ⇒ String

The name of the bucket.

Returns:

  • (String) 


117
118
119
 
# File 'lib/google/cloud/storage/bucket.rb', line 117

def name
  @gapi.name
end

#notification(id) ⇒ Google::Cloud::Storage::Notification? Also known as: find_notification

Retrieves a Pub/Sub notification subscription for the bucket.

Examples:

require "google/cloud/storage"

storage = Google::Cloud::Storage.new

bucket = storage.bucket "my-bucket"

notification = bucket.notification "1"
puts notification.id

Parameters:

  • id (String) —

    The Notification ID.

Returns:

See Also:



2709
2710
2711
2712
2713
2714
2715
 
# File 'lib/google/cloud/storage/bucket.rb', line 2709

def notification id
  ensure_service!
  gapi = service.get_notification name, id, user_project: user_project
  Notification.from_gapi name, gapi, service, user_project: user_project
rescue Google::Cloud::NotFoundError
  nil
end

#notifications ⇒ Array<Google::Cloud::Storage::Notification> Also known as: find_notifications

Retrieves the entire list of Pub/Sub notification subscriptions for the bucket.

Examples:

require "google/cloud/storage"

storage = Google::Cloud::Storage.new

bucket = storage.bucket "my-bucket"
notifications = bucket.notifications
notifications.each do |notification|
  puts notification.id
end

Returns:

See Also:



2678
2679
2680
2681
2682
2683
2684
2685
 
# File 'lib/google/cloud/storage/bucket.rb', line 2678

def notifications
  ensure_service!
  gapi = service.list_notifications name, user_project: user_project
  Array(gapi.items).map do |gapi_object|
    Notification.from_gapi name, gapi_object, service,
                           user_project: user_project
  end
end

#policy(force: nil, requested_policy_version: nil) {|policy| ... } ⇒ Policy

Gets and updates the Cloud IAM access control policy for this bucket.

Examples:

Retrieving a Policy that is implicitly version 1:

require "google/cloud/storage"

storage = Google::Cloud::Storage.new
bucket = storage.bucket "my-bucket"

policy = bucket.policy
policy.version # 1
puts policy.roles["roles/storage.objectViewer"]

Retrieving a version 3 Policy using requested_policy_version:

require "google/cloud/storage"

storage = Google::Cloud::Storage.new
bucket = storage.bucket "my-bucket"

policy = bucket.policy requested_policy_version: 3
policy.version # 3
puts policy.bindings.find do |b|
  b[:role] == "roles/storage.objectViewer"
end

Updating a Policy that is implicitly version 1:

require "google/cloud/storage"

storage = Google::Cloud::Storage.new
bucket = storage.bucket "my-bucket"

bucket.policy do |p|
  p.version # the value is 1
  p.remove "roles/storage.admin", "user:[email protected]"
  p.add "roles/storage.admin", "user:[email protected]"
  p.roles["roles/storage.objectViewer"] = ["allUsers"]
end

Updating a Policy from version 1 to version 3 by adding a condition:

require "google/cloud/storage"

storage = Google::Cloud::Storage.new
bucket = storage.bucket "my-bucket"

bucket.uniform_bucket_level_access = true

bucket.policy requested_policy_version: 3 do |p|
  p.version # the value is 1
  p.version = 3 # Must be explicitly set to opt-in to support for conditions.

  expr = "resource.name.startsWith(\"projects/_/buckets/bucket-name/objects/prefix-a-\")"
  p.bindings.insert({
                      role: "roles/storage.admin",
                      members: ["user:[email protected]"],
                      condition: {
                        title: "my-condition",
                        description: "description of condition",
                        expression: expr
                      }
                    })
end

Updating a version 3 Policy:

require "google/cloud/storage"

storage = Google::Cloud::Storage.new
bucket = storage.bucket "my-bucket"

bucket.uniform_bucket_level_access? # true

bucket.policy requested_policy_version: 3 do |p|
  p.version = 3 # Must be explicitly set to opt-in to support for conditions.

  expr = "resource.name.startsWith(\"projects/_/buckets/bucket-name/objects/prefix-a-\")"
  p.bindings.insert({
                      role: "roles/storage.admin",
                      members: ["user:[email protected]"],
                      condition: {
                        title: "my-condition",
                        description: "description of condition",
                        expression: expr
                      }
                    })
end

Parameters:

  • force (Boolean) (defaults to: nil) —

    [Deprecated] Force the latest policy to be retrieved from the Storage service when true. Deprecated because the latest policy is now always retrieved. The default is nil.

  • requested_policy_version (Integer) (defaults to: nil) —

    The requested syntax schema version of the policy. Optional. If 1, nil, or not provided, a PolicyV1 object is returned, which provides PolicyV1#roles and related helpers but does not provide a bindings method. If 3 is provided, a PolicyV3 object is returned, which provides PolicyV3#bindings but does not provide a roles method or related helpers. A higher version indicates that the policy contains role bindings with the newer syntax schema that is unsupported by earlier versions.

    The following requested policy versions are valid:

    • 1 - The first version of Cloud IAM policy schema. Supports binding one role to one or more members. Does not support conditional bindings.
    • 3 - Introduces the condition field in the role binding, which further constrains the role binding via context-based and attribute-based rules. See Understanding policies and Overview of Cloud IAM Conditions for more information.

Yields:

  • (policy) —

    A block for updating the policy. The latest policy will be read from the service and passed to the block. After the block completes, the modified policy will be written to the service.

Yield Parameters:

  • policy (Policy) —

    the current Cloud IAM Policy for this bucket

Returns:

  • (Policy) —

    the current Cloud IAM Policy for this bucket

See Also:



2523
2524
2525
2526
2527
2528
2529
2530
2531
2532
2533
2534
2535
2536
 
# File 'lib/google/cloud/storage/bucket.rb', line 2523

def policy force: nil, requested_policy_version: nil
  warn "DEPRECATED: 'force' in Bucket#policy" unless force.nil?
  ensure_service!
  gapi = service.get_bucket_policy name, requested_policy_version: requested_policy_version,
                                         user_project: user_project
  policy = if requested_policy_version.nil? || requested_policy_version == 1
             PolicyV1.from_gapi gapi
           else
             PolicyV3.from_gapi gapi
           end
  return policy unless block_given?
  yield policy
  update_policy policy
end

#policy_only=(new_policy_only) ⇒ Object

Deprecated.

Use #uniform_bucket_level_access= instead.



923
924
925
 
# File 'lib/google/cloud/storage/bucket.rb', line 923

def policy_only= new_policy_only
  self.uniform_bucket_level_access = new_policy_only
end

#policy_only? ⇒ Boolean

Deprecated.

Use #uniform_bucket_level_access? instead.

Returns:

  • (Boolean) 


916
917
918
 
# File 'lib/google/cloud/storage/bucket.rb', line 916

def policy_only?
  uniform_bucket_level_access?
end

#policy_only_locked_at ⇒ Object

Deprecated.

Use #uniform_bucket_level_access_locked_at instead.



930
931
932
 
# File 'lib/google/cloud/storage/bucket.rb', line 930

def policy_only_locked_at
  uniform_bucket_level_access_locked_at
end

#post_object(path, policy: nil, issuer: nil, client_email: nil, signing_key: nil, private_key: nil, signer: nil) ⇒ PostObject

Generate a PostObject that includes the fields and URL to upload objects via HTML forms.

Generating a PostObject requires service account credentials, either by connecting with a service account when calling Google::Cloud.storage, or by passing in the service account issuer and signing_key values. Although the private key can be passed as a string for convenience, creating and storing an instance of # OpenSSL::PKey::RSA is more efficient when making multiple calls to post_object.

A SignedUrlUnavailable is raised if the service account credentials are missing. Service account credentials are acquired by following the steps in Service Account Authentication.

Examples:

require "google/cloud/storage"

storage = Google::Cloud::Storage.new

bucket = storage.bucket "my-todo-app"
post = bucket.post_object "avatars/heidi/400x400.png"

post.url #=> "https://storage.googleapis.com"
post.fields[:key] #=> "my-todo-app/avatars/heidi/400x400.png"
post.fields[:GoogleAccessId] #=> "[email protected]"
post.fields[:signature] #=> "ABC...XYZ="
post.fields[:policy] #=> "ABC...XYZ="

Using a policy to define the upload authorization:

require "google/cloud/storage"

storage = Google::Cloud::Storage.new

policy = {
  expiration: (Time.now + 3600).iso8601,
  conditions: [
    ["starts-with", "$key", ""],
    {acl: "bucket-owner-read"},
    {bucket: "travel-maps"},
    {success_action_redirect: "http://example.com/success.html"},
    ["eq", "$Content-Type", "image/jpeg"],
    ["content-length-range", 0, 1000000]
  ]
}

bucket = storage.bucket "my-todo-app"
post = bucket.post_object "avatars/heidi/400x400.png",
                           policy: policy

post.url #=> "https://storage.googleapis.com"
post.fields[:key] #=> "my-todo-app/avatars/heidi/400x400.png"
post.fields[:GoogleAccessId] #=> "[email protected]"
post.fields[:signature] #=> "ABC...XYZ="
post.fields[:policy] #=> "ABC...XYZ="

Using the issuer and signing_key options:

require "google/cloud/storage"

storage = Google::Cloud::Storage.new

bucket = storage.bucket "my-todo-app"
key = OpenSSL::PKey::RSA.new
post = bucket.post_object "avatars/heidi/400x400.png",
                          issuer: "[email protected]",
                          signing_key: key

post.url #=> "https://storage.googleapis.com"
post.fields[:key] #=> "my-todo-app/avatars/heidi/400x400.png"
post.fields[:GoogleAccessId] #=> "[email protected]"
post.fields[:signature] #=> "ABC...XYZ="
post.fields[:policy] #=> "ABC...XYZ="

Using Cloud IAMCredentials signBlob to create the signature:

require "google/cloud/storage"
require "google/apis/iamcredentials_v1"
require "googleauth"

# Issuer is the service account email that the Signed URL will be signed with
# and any permission granted in the Signed URL must be granted to the
# Google Service Account.
issuer = "[email protected]"

# Create a lambda that accepts the string_to_sign
signer = lambda do |string_to_sign|
  IAMCredentials = Google::Apis::IamcredentialsV1
  iam_client = IAMCredentials::IAMCredentialsService.new

  # Get the environment configured authorization
  scopes = ["https://www.googleapis.com/auth/iam"]
  iam_client.authorization = Google::Auth.get_application_default scopes

  request = Google::Apis::IamcredentialsV1::SignBlobRequest.new(
    payload: string_to_sign
  )
  resource = "projects/-/serviceAccounts/#{issuer}"
  response = iam_client. resource, request
  response.signed_blob
end

storage = Google::Cloud::Storage.new

bucket = storage.bucket "my-todo-app"
post = bucket.post_object "avatars/heidi/400x400.png",
                          issuer: issuer,
                          signer: signer

post.url #=> "https://storage.googleapis.com"
post.fields[:key] #=> "my-todo-app/avatars/heidi/400x400.png"
post.fields[:GoogleAccessId] #=> "[email protected]"
post.fields[:signature] #=> "ABC...XYZ="
post.fields[:policy] #=> "ABC...XYZ="

Parameters:

  • path (String) —

    Path to the file in Google Cloud Storage.

  • policy (Hash) (defaults to: nil) —

    The security policy that describes what can and cannot be uploaded in the form. When provided, the PostObject fields will include a signature based on the JSON representation of this hash and the same policy in Base64 format.

    If you do not provide a security policy, requests are considered to be anonymous and will only work with buckets that have granted WRITE or FULL_CONTROL permission to anonymous users. See Policy Document for more information.

  • issuer (String) (defaults to: nil) —

    Service Account's Client Email.

  • client_email (String) (defaults to: nil) —

    Service Account's Client Email.

  • signing_key (OpenSSL::PKey::RSA, String, Proc) (defaults to: nil) —

    Service Account's Private Key or a Proc that accepts a single String parameter and returns a RSA SHA256 signature using a valid Google Service Account Private Key.

  • private_key (OpenSSL::PKey::RSA, String, Proc) (defaults to: nil) —

    Service Account's Private Key or a Proc that accepts a single String parameter and returns a RSA SHA256 signature using a valid Google Service Account Private Key.

  • signer (OpenSSL::PKey::RSA, String, Proc) (defaults to: nil) —

    Service Account's Private Key or a Proc that accepts a single String parameter and returns a RSA SHA256 signature using a valid Google Service Account Private Key.

    When using this method in environments such as GAE Flexible Environment, GKE, or Cloud Functions where the private key is unavailable, it may be necessary to provide a Proc (or lambda) via the signer parameter. This Proc should return a signature created using a RPC call to the Service Account Credentials signBlob method as shown in the example below.

Returns:

  • (PostObject) —

    An object containing the URL, fields, and values needed to upload files via HTML forms.

Raises:

See Also:



2127
2128
2129
2130
2131
2132
2133
2134
2135
2136
2137
2138
2139
2140
2141
2142
 
# File 'lib/google/cloud/storage/bucket.rb', line 2127

def post_object path,
                policy: nil,
                issuer: nil,
                client_email: nil,
                signing_key: nil,
                private_key: nil,
                signer: nil
  ensure_service!
  sign = File::SignerV2.from_bucket self, path
  sign.post_object issuer: issuer,
                   client_email: client_email,
                   signing_key: signing_key,
                   private_key: private_key,
                   signer: signer,
                   policy: policy
end

#public_access_prevention ⇒ String?

The value for Public Access Prevention in the bucket's IAM configuration. Currently, inherited and enforced are supported. When set to enforced, Public Access Prevention is enforced in the bucket's IAM configuration. This value can be modified by calling #public_access_prevention=.

Examples:

require "google/cloud/storage"

storage = Google::Cloud::Storage.new

bucket = storage.bucket "my-bucket"

bucket.public_access_prevention = :enforced
bucket.public_access_prevention #=> "enforced"

Returns:

  • (String, nil) —

    Currently, inherited and enforced are supported. Returns nil if the bucket has no IAM configuration.



952
953
954
 
# File 'lib/google/cloud/storage/bucket.rb', line 952

def public_access_prevention
  @gapi.iam_configuration&.public_access_prevention
end

#public_access_prevention=(new_public_access_prevention) ⇒ Object

Sets the value for Public Access Prevention in the bucket's IAM configuration. This value can be queried by calling #public_access_prevention.

Examples:

Set Public Access Prevention to enforced:

require "google/cloud/storage"

storage = Google::Cloud::Storage.new

bucket = storage.bucket "my-bucket"

bucket.public_access_prevention = :enforced
bucket.public_access_prevention #=> "enforced"

Set Public Access Prevention to inherited:

require "google/cloud/storage"

storage = Google::Cloud::Storage.new

bucket = storage.bucket "my-bucket"

bucket.public_access_prevention = :inherited
bucket.public_access_prevention #=> "inherited"

Parameters:

  • new_public_access_prevention (Symbol, String) —

    The bucket's new Public Access Prevention configuration. Currently, inherited and enforced are supported. When set to enforced, Public Access Prevention is enforced in the bucket's IAM configuration.



984
985
986
987
988
 
# File 'lib/google/cloud/storage/bucket.rb', line 984

def public_access_prevention= new_public_access_prevention
  @gapi.iam_configuration ||= API::Bucket::IamConfiguration.new
  @gapi.iam_configuration.public_access_prevention = new_public_access_prevention.to_s
  patch_gapi! :iam_configuration
end

#public_access_prevention_enforced? ⇒ Boolean

Whether the bucket's file IAM configuration enforces Public Access Prevention. The default is false. This value can be modified by calling #public_access_prevention=.

Examples:

require "google/cloud/storage"

storage = Google::Cloud::Storage.new

bucket = storage.bucket "my-bucket"

bucket.public_access_prevention = :enforced
bucket.public_access_prevention_enforced? # true

Returns:

  • (Boolean) —

    Returns false if the bucket has no IAM configuration or if Public Access Prevention is not enforced in the IAM configuration. Returns true if Public Access Prevention is enforced in the IAM configuration.



1008
1009
1010
1011
 
# File 'lib/google/cloud/storage/bucket.rb', line 1008

def public_access_prevention_enforced?
  return false unless @gapi.iam_configuration&.public_access_prevention
  @gapi.iam_configuration.public_access_prevention.to_s == "enforced"
end

#public_access_prevention_inherited? ⇒ Boolean Also known as: public_access_prevention_unspecified?

Whether the value for Public Access Prevention in the bucket's IAM configuration is inherited. The default is false. This value can be modified by calling #public_access_prevention=.

Examples:

require "google/cloud/storage"

storage = Google::Cloud::Storage.new

bucket = storage.bucket "my-bucket"

bucket.public_access_prevention = :inherited
bucket.public_access_prevention_inherited? # true

Returns:

  • (Boolean) —

    Returns false if the bucket has no IAM configuration or if Public Access Prevention is not inherited in the IAM configuration. Returns true if Public Access Prevention is inherited in the IAM configuration.



1031
1032
1033
1034
 
# File 'lib/google/cloud/storage/bucket.rb', line 1031

def public_access_prevention_inherited?
  return false unless @gapi.iam_configuration&.public_access_prevention
  ["inherited", "unspecified"].include? @gapi.iam_configuration.public_access_prevention.to_s
end

#reload! ⇒ Object Also known as: refresh!

Reloads the bucket with current data from the Storage service.



2803
2804
2805
2806
2807
2808
2809
 
# File 'lib/google/cloud/storage/bucket.rb', line 2803

def reload!
  ensure_service!
  @gapi = service.get_bucket name, user_project: user_project
  # If NotFound then lazy will never be unset
  @lazy = nil
  self
end

#requester_pays ⇒ Boolean? Also known as: requester_pays?

Indicates that a client accessing the bucket or a file it contains must assume the transit costs related to the access. The requester must pass the user_project option to Project#bucket and Project#buckets to indicate the project to which the access costs should be billed.

Returns:

  • (Boolean, nil) —

    Returns true if requester pays is enabled for the bucket.



521
522
523
 
# File 'lib/google/cloud/storage/bucket.rb', line 521

def requester_pays
  @gapi.billing&.requester_pays
end

#requester_pays=(new_requester_pays) ⇒ Object

Enables requester pays for the bucket. If enabled, a client accessing the bucket or a file it contains must assume the transit costs related to the access. The requester must pass the user_project option to Project#bucket and Project#buckets to indicate the project to which the access costs should be billed.

To pass metageneration preconditions, call this method within a block passed to #update.

Examples:

Enable requester pays for a bucket:

require "google/cloud/storage"

storage = Google::Cloud::Storage.new

bucket = storage.bucket "my-bucket"

bucket.requester_pays = true # API call
# Other projects must now provide `user_project` option when calling
# Project#bucket or Project#buckets to access this bucket.

Parameters:

  • new_requester_pays (Boolean) —

    When set to true, requester pays is enabled for the bucket.



550
551
552
553
554
 
# File 'lib/google/cloud/storage/bucket.rb', line 550

def requester_pays= new_requester_pays
  @gapi.billing ||= API::Bucket::Billing.new
  @gapi.billing.requester_pays = new_requester_pays
  patch_gapi! :billing
end

#retention_effective_at ⇒ DateTime?

The time from which the retention policy was effective. Whenever a retention policy is created or extended, GCS updates the effective date of the policy. The effective date signals the date starting from which objects were guaranteed to be retained for the full duration of the policy.

This field is updated when the retention policy is created or modified, including extension of a locked policy.

Returns:

  • (DateTime, nil) —

    The effective date of the bucket's retention policy, if a policy exists.



690
691
692
 
# File 'lib/google/cloud/storage/bucket.rb', line 690

def retention_effective_at
  @gapi.retention_policy&.effective_time
end

#retention_period ⇒ Integer?

The period of time (in seconds) that files in the bucket must be retained, and cannot be deleted, overwritten, or archived. The value must be between 0 and 100 years (in seconds.)

See also: #retention_period=, #retention_effective_at, and #retention_policy_locked?.

Returns:

  • (Integer, nil) —

    The retention period defined in seconds, if a retention policy exists for the bucket.



628
629
630
 
# File 'lib/google/cloud/storage/bucket.rb', line 628

def retention_period
  @gapi.retention_policy&.retention_period
end

#retention_period=(new_retention_period) ⇒ Object

The period of time (in seconds) that files in the bucket must be retained, and cannot be deleted, overwritten, or archived. Passing a valid Integer value will add a new retention policy to the bucket if none exists. Passing nil will remove the retention policy from the bucket if it exists, unless the policy is locked.

Locked policies can be extended in duration by using this method to set a higher value. Such an extension is permanent, and it cannot later be reduced. The extended duration will apply retroactively to all files currently in the bucket.

See also: #lock_retention_policy!, #retention_period, #retention_effective_at, and #retention_policy_locked?.

To pass metageneration preconditions, call this method within a block passed to #update.

Examples:

require "google/cloud/storage"

storage = Google::Cloud::Storage.new

bucket = storage.bucket "my-bucket"

bucket.retention_period = 2592000 # 30 days in seconds

file = bucket.create_file "path/to/local.file.ext"
file.delete # raises Google::Cloud::PermissionDeniedError

Parameters:

  • new_retention_period (Integer, nil) —

    The retention period defined in seconds. The value must be between 0 and 100 years (in seconds), or nil.



666
667
668
669
670
671
672
673
674
675
 
# File 'lib/google/cloud/storage/bucket.rb', line 666

def retention_period= new_retention_period
  if new_retention_period.nil?
    @gapi.retention_policy = nil
  else
    @gapi.retention_policy ||= API::Bucket::RetentionPolicy.new
    @gapi.retention_policy.retention_period = new_retention_period
  end

  patch_gapi! :retention_policy
end

#retention_policy_locked? ⇒ Boolean

Whether the bucket's file retention policy is locked and its retention period cannot be reduced. See #retention_period= and #lock_retention_policy!.

This value can only be set to true by calling #lock_retention_policy!.

Examples:

require "google/cloud/storage"

storage = Google::Cloud::Storage.new

bucket = storage.bucket "my-bucket"

bucket.retention_period = 2592000 # 30 days in seconds
bucket.lock_retention_policy!
bucket.retention_policy_locked? # true

file = bucket.create_file "path/to/local.file.ext"
file.delete # raises Google::Cloud::PermissionDeniedError

Returns:

  • (Boolean) —

    Returns false if there is no retention policy or if the retention policy is unlocked and the retention period can be reduced. Returns true if the retention policy is locked and the retention period cannot be reduced.



721
722
723
724
725
 
# File 'lib/google/cloud/storage/bucket.rb', line 721

def retention_policy_locked?
  return false unless @gapi.retention_policy
  !@gapi.retention_policy.is_locked.nil? &&
    @gapi.retention_policy.is_locked
end

#rpo ⇒ String?

Recovery Point Objective (RPO) is another attribute of a bucket, it measures how long it takes for a set of updates to be asynchronously copied to the other region. Currently, DEFAULT and ASYNC_TURBO are supported. When set to ASYNC_TURBO, Turbo Replication is enabled for a bucket. DEFAULT is used to reset rpo on an existing bucket with rpo set to ASYNC_TURBO. This value can be modified by calling #rpo=.

Examples:

require "google/cloud/storage"

storage = Google::Cloud::Storage.new

bucket = storage.bucket "my-bucket"

bucket.rpo = :DEFAULT
bucket.rpo #=> "DEFAULT"

Returns:

  • (String, nil) —

    Currently, DEFAULT and ASYNC_TURBO are supported. Returns nil if the bucket has no RPO.



1058
1059
1060
 
# File 'lib/google/cloud/storage/bucket.rb', line 1058

def rpo
  @gapi.rpo
end

#rpo=(new_rpo) ⇒ Object

Sets the value for Recovery Point Objective (RPO) in the bucket. This value can be queried by calling #rpo.

Examples:

Set RPO to DEFAULT:

require "google/cloud/storage"

storage = Google::Cloud::Storage.new

bucket = storage.bucket "my-bucket"

bucket.rpo = :DEFAULT
bucket.rpo #=> "DEFAULT"

Set RPO to ASYNC_TURBO:

require "google/cloud/storage"

storage = Google::Cloud::Storage.new

bucket = storage.bucket "my-bucket"

bucket.rpo = :ASYNC_TURBO
bucket.rpo #=> "ASYNC_TURBO"

Parameters:

  • new_rpo (Symbol, String) —

    The bucket's new Recovery Point Objective metadata. Currently, DEFAULT and ASYNC_TURBO are supported. When set to ASYNC_TURBO, Turbo Replication is enabled for a bucket.



1089
1090
1091
1092
 
# File 'lib/google/cloud/storage/bucket.rb', line 1089

def rpo= new_rpo
  @gapi.rpo = new_rpo&.to_s
  patch_gapi! :rpo
end

#signed_url(path = nil, method: "GET", expires: nil, content_type: nil, content_md5: nil, headers: nil, issuer: nil, client_email: nil, signing_key: nil, private_key: nil, signer: nil, query: nil, scheme: "HTTPS", virtual_hosted_style: nil, bucket_bound_hostname: nil, version: nil) ⇒ String

Generates a signed URL. See Signed URLs for more information.

Generating a signed URL requires service account credentials, either by connecting with a service account when calling Google::Cloud.storage, or by passing in the service account issuer and signing_key values. Although the private key can be passed as a string for convenience, creating and storing an instance of OpenSSL::PKey::RSA is more efficient when making multiple calls to signed_url.

A SignedUrlUnavailable is raised if the service account credentials are missing. Service account credentials are acquired by following the steps in Service Account Authentication.

Examples:

require "google/cloud/storage"

storage = Google::Cloud::Storage.new

bucket = storage.bucket "my-todo-app"
shared_url = bucket.signed_url "avatars/heidi/400x400.png"

Using the expires and version options:

require "google/cloud/storage"

storage = Google::Cloud::Storage.new

bucket = storage.bucket "my-todo-app"
shared_url = bucket.signed_url "avatars/heidi/400x400.png",
                               expires: 300, # 5 minutes from now
                               version: :v4

Using the issuer and signing_key options:

require "google/cloud/storage"

storage = Google::Cloud::Storage.new

bucket = storage.bucket "my-todo-app"
key = OpenSSL::PKey::RSA.new "-----BEGIN PRIVATE KEY-----\n..."
shared_url = bucket.signed_url "avatars/heidi/400x400.png",
                               issuer: "[email protected]",
                               signing_key: key

Using Cloud IAMCredentials signBlob to create the signature:

require "google/cloud/storage"
require "google/apis/iamcredentials_v1"
require "googleauth"

# Issuer is the service account email that the Signed URL will be signed with
# and any permission granted in the Signed URL must be granted to the
# Google Service Account.
issuer = "[email protected]"

# Create a lambda that accepts the string_to_sign
signer = lambda do |string_to_sign|
  IAMCredentials = Google::Apis::IamcredentialsV1
  iam_client = IAMCredentials::IAMCredentialsService.new

  # Get the environment configured authorization
  scopes = ["https://www.googleapis.com/auth/iam"]
  iam_client.authorization = Google::Auth.get_application_default scopes

  request = Google::Apis::IamcredentialsV1::SignBlobRequest.new(
    payload: string_to_sign
  )
  resource = "projects/-/serviceAccounts/#{issuer}"
  response = iam_client. resource, request
  response.signed_blob
end

storage = Google::Cloud::Storage.new

bucket_name = "my-todo-app"
file_path = "avatars/heidi/400x400.png"
url = storage.signed_url bucket_name, file_path,
                         method: "GET", issuer: issuer,
                         signer: signer

Using the headers option:

require "google/cloud/storage"

storage = Google::Cloud::Storage.new

bucket = storage.bucket "my-todo-app"
shared_url = bucket.signed_url "avatars/heidi/400x400.png",
                               headers: {
                                 "x-goog-acl" => "private",
                                 "x-goog-meta-foo" => "bar,baz"
                               }

Generating a signed URL for resumable upload:

require "google/cloud/storage"

storage = Google::Cloud::Storage.new

bucket = storage.bucket "my-todo-app"
url = bucket.signed_url "avatars/heidi/400x400.png",
                        method: "POST",
                        content_type: "image/png",
                        headers: {
                          "x-goog-resumable" => "start"
                        }
# Send the `x-goog-resumable:start` header and the content type
# with the resumable upload POST request.

Omitting path for a URL to list all files in the bucket.

require "google/cloud/storage"

storage = Google::Cloud::Storage.new

bucket = storage.bucket "my-todo-app"
list_files_url = bucket.signed_url version: :v4

Parameters:

  • path (String, nil) (defaults to: nil) —

    Path to the file in Google Cloud Storage, or nil to generate a URL for listing all files in the bucket.

  • method (String) (defaults to: "GET") —

    The HTTP verb to be used with the signed URL. Signed URLs can be used with GET, HEAD, PUT, and DELETE requests. Default is GET.

  • expires (Integer) (defaults to: nil) —

    The number of seconds until the URL expires. If the version is :v2, the default is 300 (5 minutes). If the version is :v4, the default is 604800 (7 days).

  • content_type (String) (defaults to: nil) —

    When provided, the client (browser) must send this value in the HTTP header. e.g. text/plain. This param is not used if the version is :v4.

  • content_md5 (String) (defaults to: nil) —

    The MD5 digest value in base64. If you provide this in the string, the client (usually a browser) must provide this HTTP header with this same value in its request. This param is not used if the version is :v4.

  • headers (Hash) (defaults to: nil) —

    Google extension headers (custom HTTP headers that begin with x-goog-) that must be included in requests that use the signed URL.

  • issuer (String) (defaults to: nil) —

    Service Account's Client Email.

  • client_email (String) (defaults to: nil) —

    Service Account's Client Email.

  • signing_key (OpenSSL::PKey::RSA, String, Proc) (defaults to: nil) —

    Service Account's Private Key or a Proc that accepts a single String parameter and returns a RSA SHA256 signature using a valid Google Service Account Private Key.

  • private_key (OpenSSL::PKey::RSA, String, Proc) (defaults to: nil) —

    Service Account's Private Key or a Proc that accepts a single String parameter and returns a RSA SHA256 signature using a valid Google Service Account Private Key.

  • signer (OpenSSL::PKey::RSA, String, Proc) (defaults to: nil) —

    Service Account's Private Key or a Proc that accepts a single String parameter and returns a RSA SHA256 signature using a valid Google Service Account Private Key.

    When using this method in environments such as GAE Flexible Environment, GKE, or Cloud Functions where the private key is unavailable, it may be necessary to provide a Proc (or lambda) via the signer parameter. This Proc should return a signature created using a RPC call to the Service Account Credentials signBlob method as shown in the example below.

  • query (Hash) (defaults to: nil) —

    Query string parameters to include in the signed URL. The given parameters are not verified by the signature.

    Parameters such as response-content-disposition and response-content-type can alter the behavior of the response when using the URL, but only when the file resource is missing the corresponding values. (These values can be permanently set using File#content_disposition= and File#content_type=.)

  • scheme (String) (defaults to: "HTTPS") —

    The URL scheme. The default value is HTTPS.

  • virtual_hosted_style (Boolean) (defaults to: nil) —

    Whether to use a virtual hosted-style hostname, which adds the bucket into the host portion of the URI rather than the path, e.g. https://mybucket.storage.googleapis.com/.... For V4 signing, this also sets the host header in the canonicalized extension headers to the virtual hosted-style host, unless that header is supplied via the headers param. The default value of false uses the form of https://storage.googleapis.com/mybucket.

  • bucket_bound_hostname (String) (defaults to: nil) —

    Use a bucket-bound hostname, which replaces the storage.googleapis.com host with the name of a CNAME bucket, e.g. a bucket named gcs-subdomain.my.domain.tld, or a Google Cloud Load Balancer which routes to a bucket you own, e.g. my-load-balancer-domain.tld.

  • version (Symbol, String) (defaults to: nil) —

    The version of the signed credential to create. Must be one of :v2 or :v4. The default value is :v2.

Returns:

  • (String) —

    The signed URL.

Raises:

See Also:



1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
 
# File 'lib/google/cloud/storage/bucket.rb', line 1923

def signed_url path = nil,
               method: "GET",
               expires: nil,
               content_type: nil,
               content_md5: nil,
               headers: nil,
               issuer: nil,
               client_email: nil,
               signing_key: nil,
               private_key: nil,
               signer: nil,
               query: nil,
               scheme: "HTTPS",
               virtual_hosted_style: nil,
               bucket_bound_hostname: nil,
               version: nil
  ensure_service!
  version ||= :v2
  case version.to_sym
  when :v2
    sign = File::SignerV2.from_bucket self, path
    sign.signed_url method: method,
                    expires: expires,
                    headers: headers,
                    content_type: content_type,
                    content_md5: content_md5,
                    issuer: issuer,
                    client_email: client_email,
                    signing_key: signing_key,
                    private_key: private_key,
                    signer: signer,
                    query: query
  when :v4
    sign = File::SignerV4.from_bucket self, path
    sign.signed_url method: method,
                    expires: expires,
                    headers: headers,
                    issuer: issuer,
                    client_email: client_email,
                    signing_key: signing_key,
                    private_key: private_key,
                    signer: signer,
                    query: query,
                    scheme: scheme,
                    virtual_hosted_style: virtual_hosted_style,
                    bucket_bound_hostname: bucket_bound_hostname
  else
    raise ArgumentError, "version '#{version}' not supported"
  end
end

#storage_class ⇒ String

The bucket's storage class. This defines how objects in the bucket are stored and determines the SLA and the cost of storage. Values include STANDARD, NEARLINE, COLDLINE, and ARCHIVE. REGIONAL,MULTI_REGIONAL, and DURABLE_REDUCED_AVAILABILITY are supported as legacy storage classes.

Returns:

  • (String) 


372
373
374
 
# File 'lib/google/cloud/storage/bucket.rb', line 372

def storage_class
  @gapi.storage_class
end

#storage_class=(new_storage_class) ⇒ Object

Updates the bucket's storage class. This defines how objects in the bucket are stored and determines the SLA and the cost of storage. Accepted values include :standard, :nearline, :coldline, and :archive, as well as the equivalent strings returned by #storage_class. :multi_regional, :regional, and durable_reduced_availability are accepted as legacy storage classes. For more information, see Storage Classes.

To pass metageneration preconditions, call this method within a block passed to #update.

Parameters:

  • new_storage_class (Symbol, String) —

    Storage class of the bucket.



391
392
393
394
 
# File 'lib/google/cloud/storage/bucket.rb', line 391

def storage_class= new_storage_class
  @gapi.storage_class = storage_class_for new_storage_class
  patch_gapi! :storage_class
end

#test_permissions(*permissions) ⇒ Array<String>

Tests the specified permissions against the Cloud IAM access control policy.

Examples:

require "google/cloud/storage"

storage = Google::Cloud::Storage.new

bucket = storage.bucket "my-bucket"

permissions = bucket.test_permissions "storage.buckets.get",
                                      "storage.buckets.delete"
permissions.include? "storage.buckets.get"    #=> true
permissions.include? "storage.buckets.delete" #=> false

Parameters:

  • permissions (String, Array<String>) —

    The set of permissions against which to check access. Permissions must be of the format storage.resource.capability, where resource is one of buckets or objects.

Returns:

  • (Array<String>) —

    The permissions held by the caller.

See Also:



2650
2651
2652
2653
2654
2655
2656
 
# File 'lib/google/cloud/storage/bucket.rb', line 2650

def test_permissions *permissions
  permissions = Array(permissions).flatten
  ensure_service!
  gapi = service.test_bucket_permissions name, permissions,
                                         user_project: user_project
  gapi.permissions
end

#uniform_bucket_level_access=(new_uniform_bucket_level_access) ⇒ Object

Sets whether uniform bucket-level access is enabled for this bucket. When this is enabled, access to the bucket will be configured through IAM, and legacy ACL policies will not work. When it is first enabled, #uniform_bucket_level_access_locked_at will be set by the API automatically. The uniform bucket-level access can then be disabled until the time specified, after which it will become immutable and calls to change it will fail. If uniform bucket-level access is enabled, calls to access legacy ACL information will fail.

Before enabling uniform bucket-level access please review uniform bucket-level access.

To pass metageneration preconditions, call this method within a block passed to #update.

Examples:

require "google/cloud/storage"

storage = Google::Cloud::Storage.new

bucket = storage.bucket "my-bucket"

bucket.uniform_bucket_level_access = true
bucket.uniform_bucket_level_access? # true

bucket.default_acl.public! # Google::Cloud::InvalidArgumentError

# The deadline for disabling uniform bucket-level access.
puts bucket.uniform_bucket_level_access_locked_at

Parameters:

  • new_uniform_bucket_level_access (Boolean) —

    When set to true, uniform bucket-level access is enabled in the bucket's IAM configuration.



880
881
882
883
884
885
886
 
# File 'lib/google/cloud/storage/bucket.rb', line 880

def uniform_bucket_level_access= new_uniform_bucket_level_access
  @gapi.iam_configuration ||= API::Bucket::IamConfiguration.new
  @gapi.iam_configuration.uniform_bucket_level_access ||= \
    API::Bucket::IamConfiguration::UniformBucketLevelAccess.new
  @gapi.iam_configuration.uniform_bucket_level_access.enabled = new_uniform_bucket_level_access
  patch_gapi! :iam_configuration
end

#uniform_bucket_level_access? ⇒ Boolean

Whether the bucket's file IAM configuration enables uniform bucket-level access. The default is false. This value can be modified by calling #uniform_bucket_level_access=.

Examples:

require "google/cloud/storage"

storage = Google::Cloud::Storage.new

bucket = storage.bucket "my-bucket"

bucket.uniform_bucket_level_access = true
bucket.uniform_bucket_level_access? # true

Returns:

  • (Boolean) —

    Returns false if the bucket has no IAM configuration or if uniform bucket-level access is not enabled in the IAM configuration. Returns true if uniform bucket-level access is enabled in the IAM configuration.



843
844
845
846
847
 
# File 'lib/google/cloud/storage/bucket.rb', line 843

def uniform_bucket_level_access?
  return false unless @gapi.iam_configuration&.uniform_bucket_level_access
  !@gapi.iam_configuration.uniform_bucket_level_access.enabled.nil? &&
    @gapi.iam_configuration.uniform_bucket_level_access.enabled
end

#uniform_bucket_level_access_locked_at ⇒ DateTime?

The deadline time for disabling uniform bucket-level access by calling #uniform_bucket_level_access=. After the locked time the uniform bucket-level access setting cannot be changed from true to false. Corresponds to the property locked_time.

Examples:

require "google/cloud/storage"

storage = Google::Cloud::Storage.new

bucket = storage.bucket "my-bucket"

bucket.uniform_bucket_level_access = true

# The deadline for disabling uniform bucket-level access.
puts bucket.uniform_bucket_level_access_locked_at

Returns:



908
909
910
911
 
# File 'lib/google/cloud/storage/bucket.rb', line 908

def uniform_bucket_level_access_locked_at
  return nil unless @gapi.iam_configuration&.uniform_bucket_level_access
  @gapi.iam_configuration.uniform_bucket_level_access.locked_time
end

#update(if_metageneration_match: nil, if_metageneration_not_match: nil) {|bucket| ... } ⇒ Object

Updates the bucket with changes made in the given block in a single PATCH request. The following attributes may be set: #cors, #logging_bucket=, #logging_prefix=, #versioning=, #website_main=, #website_404=, and #requester_pays=.

In addition, the #cors configuration accessible in the block is completely mutable and will be included in the request. (See Cors)

Examples:

require "google/cloud/storage"

storage = Google::Cloud::Storage.new

bucket = storage.bucket "my-todo-app"
bucket.update do |b|
  b.website_main = "index.html"
  b.website_404 = "not_found.html"
  b.cors[0].methods = ["GET","POST","DELETE"]
  b.cors[1].headers << "X-Another-Custom-Header"
end

New CORS rules can also be added in a nested block:

require "google/cloud/storage"

storage = Google::Cloud::Storage.new
bucket = storage.bucket "my-todo-app"

bucket.update do |b|
  b.cors do |c|
    c.add_rule ["http://example.org", "https://example.org"],
               "*",
               headers: ["X-My-Custom-Header"],
               max_age: 300
  end
end

With a if_metageneration_match precondition:

require "google/cloud/storage"

storage = Google::Cloud::Storage.new

bucket = storage.bucket "my-todo-app"
bucket.update if_metageneration_match: 6 do |b|
  b.website_main = "index.html"
end

Parameters:

  • if_metageneration_match (Integer) (defaults to: nil) —

    Makes the operation conditional on whether the bucket's current metageneration matches the given value.

  • if_metageneration_not_match (Integer) (defaults to: nil) —

    Makes the operation conditional on whether the bucket's current metageneration does not match the given value.

Yields:

  • (bucket) —

    a block yielding a delegate object for updating the file



1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
 
# File 'lib/google/cloud/storage/bucket.rb', line 1151

def update if_metageneration_match: nil, if_metageneration_not_match: nil
  updater = Updater.new @gapi
  yield updater
  # Add check for mutable cors
  updater.check_for_changed_labels!
  updater.check_for_mutable_cors!
  updater.check_for_mutable_lifecycle!
  return if updater.updates.empty?
  patch_gapi! updater.updates,
              if_metageneration_match: if_metageneration_match,
              if_metageneration_not_match: if_metageneration_not_match
end

#update_policy(new_policy) ⇒ Policy Also known as: policy=

Updates the Cloud IAM access control policy for this bucket. The policy should be read from #policy. See Policy for an explanation of the policy etag property and how to modify policies.

You can also update the policy by passing a block to #policy, which will call this method internally after the block completes.

Examples:

Updating a Policy that is implicitly version 1:

require "google/cloud/storage"

storage = Google::Cloud::Storage.new
bucket = storage.bucket "my-bucket"

policy = bucket.policy
policy.version # 1
policy.remove "roles/storage.admin", "user:[email protected]"
policy.add "roles/storage.admin", "user:[email protected]"
policy.roles["roles/storage.objectViewer"] = ["allUsers"]

policy = bucket.update_policy policy

Updating a Policy from version 1 to version 3 by adding a condition:

require "google/cloud/storage"

storage = Google::Cloud::Storage.new
bucket = storage.bucket "my-bucket"

policy = bucket.policy requested_policy_version: 3
policy.version # 1
policy.version = 3

expr = "resource.name.startsWith(\"projects/_/buckets/bucket-name/objects/prefix-a-\")"
policy.bindings.insert({
                        role: "roles/storage.admin",
                        members: ["user:[email protected]"],
                        condition: {
                          title: "my-condition",
                          description: "description of condition",
                          expression: expr
                        }
                      })

policy = bucket.update_policy policy

Updating a version 3 Policy:

require "google/cloud/storage"

storage = Google::Cloud::Storage.new
bucket = storage.bucket "my-bucket"

policy = bucket.policy requested_policy_version: 3
policy.version # 3 indicates an existing binding with a condition.

expr = "resource.name.startsWith(\"projects/_/buckets/bucket-name/objects/prefix-a-\")"
policy.bindings.insert({
                        role: "roles/storage.admin",
                        members: ["user:[email protected]"],
                        condition: {
                          title: "my-condition",
                          description: "description of condition",
                          expression: expr
                        }
                      })

policy = bucket.update_policy policy

Parameters:

  • new_policy (Policy) —

    a new or modified Cloud IAM Policy for this bucket

Returns:

  • (Policy) —

    The policy returned by the API update operation.

See Also:



2616
2617
2618
2619
2620
2621
 
# File 'lib/google/cloud/storage/bucket.rb', line 2616

def update_policy new_policy
  ensure_service!
  gapi = service.set_bucket_policy name, new_policy.to_gapi,
                                   user_project: user_project
  new_policy.class.from_gapi gapi
end

#versioning=(new_versioning) ⇒ Object

Updates whether Object Versioning is enabled for the bucket.

To pass metageneration preconditions, call this method within a block passed to #update.

Parameters:

  • new_versioning (Boolean) —

    true if versioning is to be enabled for the bucket.



418
419
420
421
422
 
# File 'lib/google/cloud/storage/bucket.rb', line 418

def versioning= new_versioning
  @gapi.versioning ||= API::Bucket::Versioning.new
  @gapi.versioning.enabled = new_versioning
  patch_gapi! :versioning
end

#versioning? ⇒ Boolean

Whether Object Versioning is enabled for the bucket.

Returns:

  • (Boolean) 


403
404
405
 
# File 'lib/google/cloud/storage/bucket.rb', line 403

def versioning?
  @gapi.versioning&.enabled?
end

#website_404 ⇒ String

The page returned from a static website served from the bucket when a site visitor requests a resource that does not exist.

Returns:

  • (String)

See Also:



466
467
468
 
# File 'lib/google/cloud/storage/bucket.rb', line 466

def website_404
  @gapi.website&.not_found_page
end

#website_404=(website_404) ⇒ Object

Updates the page returned from a static website served from the bucket when a site visitor requests a resource that does not exist.

To pass metageneration preconditions, call this method within a block passed to #update.

See Also:



505
506
507
508
509
 
# File 'lib/google/cloud/storage/bucket.rb', line 505

def website_404= website_404
  @gapi.website ||= API::Bucket::Website.new
  @gapi.website.not_found_page = website_404
  patch_gapi! :website
end

#website_main ⇒ String

The main page suffix for a static website. If the requested object path is missing, the service will ensure the path has a trailing '/', append this suffix, and attempt to retrieve the resulting object. This allows the creation of index.html objects to represent directory pages.

Returns:

  • (String) —

    The main page suffix.

See Also:



436
437
438
 
# File 'lib/google/cloud/storage/bucket.rb', line 436

def website_main
  @gapi.website&.main_page_suffix
end

#website_main=(website_main) ⇒ Object

Updates the main page suffix for a static website.

To pass metageneration preconditions, call this method within a block passed to #update.

Parameters:

  • website_main (String) —

    The main page suffix.

See Also:



451
452
453
454
455
 
# File 'lib/google/cloud/storage/bucket.rb', line 451

def website_main= website_main
  @gapi.website ||= API::Bucket::Website.new
  @gapi.website.main_page_suffix = website_main
  patch_gapi! :website
end