Class: Google::Cloud::Spanner::Admin::Database::V1::DatabaseAdminClient

Inherits:
Object
  • Object
show all
Defined in:
lib/google/cloud/spanner/admin/database/v1/database_admin_client.rb

Overview

Cloud Spanner Database Admin API

The Cloud Spanner Database Admin API can be used to create, drop, and list databases. It also enables updating the schema of pre-existing databases.

Constant Summary collapse

SERVICE_ADDRESS =

The default address of the service.

"spanner.googleapis.com".freeze
DEFAULT_SERVICE_PORT =

The default port of the service.

443
GRPC_INTERCEPTORS =

The default set of gRPC interceptors.

[]
DEFAULT_TIMEOUT = 
30
ALL_SCOPES =

The scopes needed to make gRPC calls to all of the methods defined in this service.

[
  "https://www.googleapis.com/auth/cloud-platform",
  "https://www.googleapis.com/auth/spanner.admin"
].freeze

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(credentials: nil, scopes: ALL_SCOPES, client_config: {}, timeout: DEFAULT_TIMEOUT, metadata: nil, service_address: nil, service_port: nil, exception_transformer: nil, lib_name: nil, lib_version: "") ⇒ DatabaseAdminClient

Returns a new instance of DatabaseAdminClient.

Parameters:

  • credentials (Google::Auth::Credentials, String, Hash, GRPC::Core::Channel, GRPC::Core::ChannelCredentials, Proc) (defaults to: nil) —

    Provides the means for authenticating requests made by the client. This parameter can be many types. A Google::Auth::Credentials uses a the properties of its represented keyfile for authenticating requests made by this client. A String will be treated as the path to the keyfile to be used for the construction of credentials for this client. A Hash will be treated as the contents of a keyfile to be used for the construction of credentials for this client. A GRPC::Core::Channel will be used to make calls through. A GRPC::Core::ChannelCredentials for the setting up the RPC client. The channel credentials should already be composed with a GRPC::Core::CallCredentials object. A Proc will be used as an updater_proc for the Grpc channel. The proc transforms the metadata for requests, generally, to give OAuth credentials.

  • scopes (Array<String>) (defaults to: ALL_SCOPES) —

    The OAuth scopes for this service. This parameter is ignored if an updater_proc is supplied.

  • client_config (Hash) (defaults to: {}) —

    A Hash for call options for each method. See Google::Gax#construct_settings for the structure of this data. Falls back to the default config if not specified or the specified config is missing data points.

  • timeout (Numeric) (defaults to: DEFAULT_TIMEOUT) —

    The default timeout, in seconds, for calls made through this client.

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

    Default metadata to be sent with each request. This can be overridden on a per call basis.

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

    Override for the service hostname, or nil to leave as the default.

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

    Override for the service port, or nil to leave as the default.

  • exception_transformer (Proc) (defaults to: nil) —

    An optional proc that intercepts any exceptions raised during an API call to inject custom error handling.



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# File 'lib/google/cloud/spanner/admin/database/v1/database_admin_client.rb', line 154

def initialize \
    credentials: nil,
    scopes: ALL_SCOPES,
    client_config: {},
    timeout: DEFAULT_TIMEOUT,
    metadata: nil,
    service_address: nil,
    service_port: nil,
    exception_transformer: nil,
    lib_name: nil,
    lib_version: ""
  # These require statements are intentionally placed here to initialize
  # the gRPC module only when it's required.
  # See https://github.com/googleapis/toolkit/issues/446
  require "google/gax/grpc"
  require "google/spanner/admin/database/v1/spanner_database_admin_services_pb"

  credentials ||= Google::Cloud::Spanner::Admin::Database::V1::Credentials.default

  @operations_client = OperationsClient.new(
    credentials: credentials,
    scopes: scopes,
    client_config: client_config,
    timeout: timeout,
    lib_name: lib_name,
    lib_version: lib_version,
    metadata: metadata,
  )

  if credentials.is_a?(String) || credentials.is_a?(Hash)
    updater_proc = Google::Cloud::Spanner::Admin::Database::V1::Credentials.new(credentials).updater_proc
  end
  if credentials.is_a?(GRPC::Core::Channel)
    channel = credentials
  end
  if credentials.is_a?(GRPC::Core::ChannelCredentials)
    chan_creds = credentials
  end
  if credentials.is_a?(Proc)
    updater_proc = credentials
  end
  if credentials.is_a?(Google::Auth::Credentials)
    updater_proc = credentials.updater_proc
  end

  package_version = Google::Cloud::Spanner::VERSION

  google_api_client = "gl-ruby/#{RUBY_VERSION}"
  google_api_client << " #{lib_name}/#{lib_version}" if lib_name
  google_api_client << " gapic/#{package_version} gax/#{Google::Gax::VERSION}"
  google_api_client << " grpc/#{GRPC::VERSION}"
  google_api_client.freeze

  headers = { :"x-goog-api-client" => google_api_client }
  headers.merge!(metadata) unless metadata.nil?
  client_config_file = Pathname.new(__dir__).join(
    "database_admin_client_config.json"
  )
  defaults = client_config_file.open do |f|
    Google::Gax.construct_settings(
      "google.spanner.admin.database.v1.DatabaseAdmin",
      JSON.parse(f.read),
      client_config,
      Google::Gax::Grpc::STATUS_CODE_NAMES,
      timeout,
      page_descriptors: PAGE_DESCRIPTORS,
      errors: Google::Gax::Grpc::API_ERRORS,
      metadata: headers
    )
  end

  # Allow overriding the service path/port in subclasses.
  service_path = service_address || self.class::SERVICE_ADDRESS
  port = service_port || self.class::DEFAULT_SERVICE_PORT
  interceptors = self.class::GRPC_INTERCEPTORS
  @database_admin_stub = Google::Gax::Grpc.create_stub(
    service_path,
    port,
    chan_creds: chan_creds,
    channel: channel,
    updater_proc: updater_proc,
    scopes: scopes,
    interceptors: interceptors,
    &Google::Spanner::Admin::Database::V1::DatabaseAdmin::Stub.method(:new)
  )

  @list_databases = Google::Gax.create_api_call(
    @database_admin_stub.method(:list_databases),
    defaults["list_databases"],
    exception_transformer: exception_transformer,
    params_extractor: proc do |request|
      {'parent' => request.parent}
    end
  )
  @create_database = Google::Gax.create_api_call(
    @database_admin_stub.method(:create_database),
    defaults["create_database"],
    exception_transformer: exception_transformer,
    params_extractor: proc do |request|
      {'parent' => request.parent}
    end
  )
  @get_database = Google::Gax.create_api_call(
    @database_admin_stub.method(:get_database),
    defaults["get_database"],
    exception_transformer: exception_transformer,
    params_extractor: proc do |request|
      {'name' => request.name}
    end
  )
  @update_database_ddl = Google::Gax.create_api_call(
    @database_admin_stub.method(:update_database_ddl),
    defaults["update_database_ddl"],
    exception_transformer: exception_transformer,
    params_extractor: proc do |request|
      {'database' => request.database}
    end
  )
  @drop_database = Google::Gax.create_api_call(
    @database_admin_stub.method(:drop_database),
    defaults["drop_database"],
    exception_transformer: exception_transformer,
    params_extractor: proc do |request|
      {'database' => request.database}
    end
  )
  @get_database_ddl = Google::Gax.create_api_call(
    @database_admin_stub.method(:get_database_ddl),
    defaults["get_database_ddl"],
    exception_transformer: exception_transformer,
    params_extractor: proc do |request|
      {'database' => request.database}
    end
  )
  @set_iam_policy = Google::Gax.create_api_call(
    @database_admin_stub.method(:set_iam_policy),
    defaults["set_iam_policy"],
    exception_transformer: exception_transformer,
    params_extractor: proc do |request|
      {'resource' => request.resource}
    end
  )
  @get_iam_policy = Google::Gax.create_api_call(
    @database_admin_stub.method(:get_iam_policy),
    defaults["get_iam_policy"],
    exception_transformer: exception_transformer,
    params_extractor: proc do |request|
      {'resource' => request.resource}
    end
  )
  @test_iam_permissions = Google::Gax.create_api_call(
    @database_admin_stub.method(:test_iam_permissions),
    defaults["test_iam_permissions"],
    exception_transformer: exception_transformer,
    params_extractor: proc do |request|
      {'resource' => request.resource}
    end
  )
end

Class Method Details

.database_path(project, instance, database) ⇒ String

Returns a fully-qualified database resource name string.

Parameters:

  • project (String)
  • instance (String)
  • database (String)

Returns:

  • (String) 


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# File 'lib/google/cloud/spanner/admin/database/v1/database_admin_client.rb', line 102

def self.database_path project, instance, database
  DATABASE_PATH_TEMPLATE.render(
    :"project" => project,
    :"instance" => instance,
    :"database" => database
  )
end

.instance_path(project, instance) ⇒ String

Returns a fully-qualified instance resource name string.

Parameters:

  • project (String)
  • instance (String)

Returns:

  • (String) 


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# File 'lib/google/cloud/spanner/admin/database/v1/database_admin_client.rb', line 114

def self.instance_path project, instance
  INSTANCE_PATH_TEMPLATE.render(
    :"project" => project,
    :"instance" => instance
  )
end

Instance Method Details

#create_database(parent, create_statement, extra_statements: nil, options: nil) ⇒ Google::Gax::Operation

Creates a new Cloud Spanner database and starts to prepare it for serving. The returned long-running operation will have a name of the format <database_name>/operations/<operation_id> and can be used to track preparation of the database. The metadata field type is CreateDatabaseMetadata. The response field type is Database, if successful.

Examples:

require "google/cloud/spanner/admin/database"

database_admin_client = Google::Cloud::Spanner::Admin::Database.new(version: :v1)
formatted_parent = Google::Cloud::Spanner::Admin::Database::V1::DatabaseAdminClient.instance_path("[PROJECT]", "[INSTANCE]")

# TODO: Initialize `create_statement`:
create_statement = ''

# Register a callback during the method call.
operation = database_admin_client.create_database(formatted_parent, create_statement) do |op|
  raise op.results.message if op.error?
  op_results = op.results
  # Process the results.

  metadata = op.metadata
  # Process the metadata.
end

# Or use the return value to register a callback.
operation.on_done do |op|
  raise op.results.message if op.error?
  op_results = op.results
  # Process the results.

  metadata = op.metadata
  # Process the metadata.
end

# Manually reload the operation.
operation.reload!

# Or block until the operation completes, triggering callbacks on
# completion.
operation.wait_until_done!

Parameters:

  • parent (String) —

    Required. The name of the instance that will serve the new database. Values are of the form projects/<project>/instances/<instance>.

  • create_statement (String) —

    Required. A CREATE DATABASE statement, which specifies the ID of the new database. The database ID must conform to the regular expression [a-z][a-z0-9_\-]*[a-z0-9] and be between 2 and 30 characters in length. If the database ID is a reserved word or if it contains a hyphen, the database ID must be enclosed in backticks (`).

  • extra_statements (Array<String>) (defaults to: nil) —

    An optional list of DDL statements to run inside the newly created database. Statements can create tables, indexes, etc. These statements execute atomically with the creation of the database: if there is an error in any statement, the database is not created.

  • options (Google::Gax::CallOptions) (defaults to: nil) —

    Overrides the default settings for this call, e.g, timeout, retries, etc.

Returns:

  • (Google::Gax::Operation)

Raises:

  • (Google::Gax::GaxError) —

    if the RPC is aborted.



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# File 'lib/google/cloud/spanner/admin/database/v1/database_admin_client.rb', line 435

def create_database \
    parent,
    create_statement,
    extra_statements: nil,
    options: nil
  req = {
    parent: parent,
    create_statement: create_statement,
    extra_statements: extra_statements
  }.delete_if { |_, v| v.nil? }
  req = Google::Gax::to_proto(req, Google::Spanner::Admin::Database::V1::CreateDatabaseRequest)
  operation = Google::Gax::Operation.new(
    @create_database.call(req, options),
    @operations_client,
    Google::Spanner::Admin::Database::V1::Database,
    Google::Spanner::Admin::Database::V1::CreateDatabaseMetadata,
    call_options: options
  )
  operation.on_done { |operation| yield(operation) } if block_given?
  operation
end

#drop_database(database, options: nil) {|result, operation| ... } ⇒ Object

Drops (aka deletes) a Cloud Spanner database.

Examples:

require "google/cloud/spanner/admin/database"

database_admin_client = Google::Cloud::Spanner::Admin::Database.new(version: :v1)
formatted_database = Google::Cloud::Spanner::Admin::Database::V1::DatabaseAdminClient.database_path("[PROJECT]", "[INSTANCE]", "[DATABASE]")
database_admin_client.drop_database(formatted_database)

Parameters:

  • database (String) —

    Required. The database to be dropped.

  • options (Google::Gax::CallOptions) (defaults to: nil) —

    Overrides the default settings for this call, e.g, timeout, retries, etc.

Yields:

  • (result, operation) —

    Access the result along with the RPC operation

Yield Parameters:

  • result —

    []

  • operation (GRPC::ActiveCall::Operation)

Raises:

  • (Google::Gax::GaxError) —

    if the RPC is aborted.



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# File 'lib/google/cloud/spanner/admin/database/v1/database_admin_client.rb', line 604

def drop_database \
    database,
    options: nil,
    &block
  req = {
    database: database
  }.delete_if { |_, v| v.nil? }
  req = Google::Gax::to_proto(req, Google::Spanner::Admin::Database::V1::DropDatabaseRequest)
  @drop_database.call(req, options, &block)
  nil
end

#get_database(name, options: nil) {|result, operation| ... } ⇒ Google::Spanner::Admin::Database::V1::Database

Gets the state of a Cloud Spanner database.

Examples:

require "google/cloud/spanner/admin/database"

database_admin_client = Google::Cloud::Spanner::Admin::Database.new(version: :v1)
formatted_name = Google::Cloud::Spanner::Admin::Database::V1::DatabaseAdminClient.database_path("[PROJECT]", "[INSTANCE]", "[DATABASE]")
response = database_admin_client.get_database(formatted_name)

Parameters:

  • name (String) —

    Required. The name of the requested database. Values are of the form projects/<project>/instances/<instance>/databases/<database>.

  • options (Google::Gax::CallOptions) (defaults to: nil) —

    Overrides the default settings for this call, e.g, timeout, retries, etc.

Yields:

  • (result, operation) —

    Access the result along with the RPC operation

Yield Parameters:

Returns:

Raises:

  • (Google::Gax::GaxError) —

    if the RPC is aborted.



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# File 'lib/google/cloud/spanner/admin/database/v1/database_admin_client.rb', line 477

def get_database \
    name,
    options: nil,
    &block
  req = {
    name: name
  }.delete_if { |_, v| v.nil? }
  req = Google::Gax::to_proto(req, Google::Spanner::Admin::Database::V1::GetDatabaseRequest)
  @get_database.call(req, options, &block)
end

#get_database_ddl(database, options: nil) {|result, operation| ... } ⇒ Google::Spanner::Admin::Database::V1::GetDatabaseDdlResponse

Returns the schema of a Cloud Spanner database as a list of formatted DDL statements. This method does not show pending schema updates, those may be queried using the Operations API.

Examples:

require "google/cloud/spanner/admin/database"

database_admin_client = Google::Cloud::Spanner::Admin::Database.new(version: :v1)
formatted_database = Google::Cloud::Spanner::Admin::Database::V1::DatabaseAdminClient.database_path("[PROJECT]", "[INSTANCE]", "[DATABASE]")
response = database_admin_client.get_database_ddl(formatted_database)

Parameters:

  • database (String) —

    Required. The database whose schema we wish to get.

  • options (Google::Gax::CallOptions) (defaults to: nil) —

    Overrides the default settings for this call, e.g, timeout, retries, etc.

Yields:

  • (result, operation) —

    Access the result along with the RPC operation

Yield Parameters:

Returns:

Raises:

  • (Google::Gax::GaxError) —

    if the RPC is aborted.



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# File 'lib/google/cloud/spanner/admin/database/v1/database_admin_client.rb', line 637

def get_database_ddl \
    database,
    options: nil,
    &block
  req = {
    database: database
  }.delete_if { |_, v| v.nil? }
  req = Google::Gax::to_proto(req, Google::Spanner::Admin::Database::V1::GetDatabaseDdlRequest)
  @get_database_ddl.call(req, options, &block)
end

#get_iam_policy(resource, options_: nil, options: nil) {|result, operation| ... } ⇒ Google::Iam::V1::Policy

Gets the access control policy for a database resource. Returns an empty policy if a database exists but does not have a policy set.

Authorization requires spanner.databases.getIamPolicy permission on resource.

Examples:

require "google/cloud/spanner/admin/database"

database_admin_client = Google::Cloud::Spanner::Admin::Database.new(version: :v1)
formatted_resource = Google::Cloud::Spanner::Admin::Database::V1::DatabaseAdminClient.database_path("[PROJECT]", "[INSTANCE]", "[DATABASE]")
response = database_admin_client.get_iam_policy(formatted_resource)

Parameters:

  • resource (String) —

    See the operation documentation for the appropriate value for this field.

  • options_ (Google::Iam::V1::GetPolicyOptions | Hash) (defaults to: nil) —

    GetIamPolicy. This field is only used by Cloud IAM. A hash of the same form as Google::Iam::V1::GetPolicyOptions can also be provided.

  • options (Google::Gax::CallOptions) (defaults to: nil) —

    Overrides the default settings for this call, e.g, timeout, retries, etc.

Yields:

  • (result, operation) —

    Access the result along with the RPC operation

Yield Parameters:

Returns:

Raises:

  • (Google::Gax::GaxError) —

    if the RPC is aborted.



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# File 'lib/google/cloud/spanner/admin/database/v1/database_admin_client.rb', line 724

def get_iam_policy \
    resource,
    options_: nil,
    options: nil,
    &block
  req = {
    resource: resource,
    options: options_
  }.delete_if { |_, v| v.nil? }
  req = Google::Gax::to_proto(req, Google::Iam::V1::GetIamPolicyRequest)
  @get_iam_policy.call(req, options, &block)
end

#list_databases(parent, page_size: nil, options: nil) {|result, operation| ... } ⇒ Google::Gax::PagedEnumerable<Google::Spanner::Admin::Database::V1::Database>

Lists Cloud Spanner databases.

Examples:

require "google/cloud/spanner/admin/database"

database_admin_client = Google::Cloud::Spanner::Admin::Database.new(version: :v1)
formatted_parent = Google::Cloud::Spanner::Admin::Database::V1::DatabaseAdminClient.instance_path("[PROJECT]", "[INSTANCE]")

# Iterate over all results.
database_admin_client.list_databases(formatted_parent).each do |element|
  # Process element.
end

# Or iterate over results one page at a time.
database_admin_client.list_databases(formatted_parent).each_page do |page|
  # Process each page at a time.
  page.each do |element|
    # Process element.
  end
end

Parameters:

  • parent (String) —

    Required. The instance whose databases should be listed. Values are of the form projects/<project>/instances/<instance>.

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

    The maximum number of resources contained in the underlying API response. If page streaming is performed per-resource, this parameter does not affect the return value. If page streaming is performed per-page, this determines the maximum number of resources in a page.

  • options (Google::Gax::CallOptions) (defaults to: nil) —

    Overrides the default settings for this call, e.g, timeout, retries, etc.

Yields:

  • (result, operation) —

    Access the result along with the RPC operation

Yield Parameters:

Returns:

  • (Google::Gax::PagedEnumerable<Google::Spanner::Admin::Database::V1::Database>) —

    An enumerable of Google::Spanner::Admin::Database::V1::Database instances. See Google::Gax::PagedEnumerable documentation for other operations such as per-page iteration or access to the response object.

Raises:

  • (Google::Gax::GaxError) —

    if the RPC is aborted.



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# File 'lib/google/cloud/spanner/admin/database/v1/database_admin_client.rb', line 358

def list_databases \
    parent,
    page_size: nil,
    options: nil,
    &block
  req = {
    parent: parent,
    page_size: page_size
  }.delete_if { |_, v| v.nil? }
  req = Google::Gax::to_proto(req, Google::Spanner::Admin::Database::V1::ListDatabasesRequest)
  @list_databases.call(req, options, &block)
end

#set_iam_policy(resource, policy, options: nil) {|result, operation| ... } ⇒ Google::Iam::V1::Policy

Sets the access control policy on a database resource. Replaces any existing policy.

Authorization requires spanner.databases.setIamPolicy permission on resource.

Examples:

require "google/cloud/spanner/admin/database"

database_admin_client = Google::Cloud::Spanner::Admin::Database.new(version: :v1)
formatted_resource = Google::Cloud::Spanner::Admin::Database::V1::DatabaseAdminClient.database_path("[PROJECT]", "[INSTANCE]", "[DATABASE]")

# TODO: Initialize `policy`:
policy = {}
response = database_admin_client.set_iam_policy(formatted_resource, policy)

Parameters:

  • resource (String) —

    See the operation documentation for the appropriate value for this field.

  • policy (Google::Iam::V1::Policy | Hash) —

    the policy is limited to a few 10s of KB. An empty policy is a valid policy but certain Cloud Platform services (such as Projects) might reject them. A hash of the same form as Google::Iam::V1::Policy can also be provided.

  • options (Google::Gax::CallOptions) (defaults to: nil) —

    Overrides the default settings for this call, e.g, timeout, retries, etc.

Yields:

  • (result, operation) —

    Access the result along with the RPC operation

Yield Parameters:

Returns:

Raises:

  • (Google::Gax::GaxError) —

    if the RPC is aborted.



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# File 'lib/google/cloud/spanner/admin/database/v1/database_admin_client.rb', line 682

def set_iam_policy \
    resource,
    policy,
    options: nil,
    &block
  req = {
    resource: resource,
    policy: policy
  }.delete_if { |_, v| v.nil? }
  req = Google::Gax::to_proto(req, Google::Iam::V1::SetIamPolicyRequest)
  @set_iam_policy.call(req, options, &block)
end

#test_iam_permissions(resource, permissions, options: nil) {|result, operation| ... } ⇒ Google::Iam::V1::TestIamPermissionsResponse

Returns permissions that the caller has on the specified database resource.

Attempting this RPC on a non-existent Cloud Spanner database will result in a NOT_FOUND error if the user has spanner.databases.list permission on the containing Cloud Spanner instance. Otherwise returns an empty set of permissions.

Examples:

require "google/cloud/spanner/admin/database"

database_admin_client = Google::Cloud::Spanner::Admin::Database.new(version: :v1)
formatted_resource = Google::Cloud::Spanner::Admin::Database::V1::DatabaseAdminClient.database_path("[PROJECT]", "[INSTANCE]", "[DATABASE]")

# TODO: Initialize `permissions`:
permissions = []
response = database_admin_client.test_iam_permissions(formatted_resource, permissions)

Parameters:

  • resource (String) —

    See the operation documentation for the appropriate value for this field.

  • permissions (Array<String>) —

    The set of permissions to check for the resource. Permissions with wildcards (such as ‘‘ or ‘storage.’) are not allowed. For more information see IAM Overview.

  • options (Google::Gax::CallOptions) (defaults to: nil) —

    Overrides the default settings for this call, e.g, timeout, retries, etc.

Yields:

  • (result, operation) —

    Access the result along with the RPC operation

Yield Parameters:

Returns:

Raises:

  • (Google::Gax::GaxError) —

    if the RPC is aborted.



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# File 'lib/google/cloud/spanner/admin/database/v1/database_admin_client.rb', line 770

def test_iam_permissions \
    resource,
    permissions,
    options: nil,
    &block
  req = {
    resource: resource,
    permissions: permissions
  }.delete_if { |_, v| v.nil? }
  req = Google::Gax::to_proto(req, Google::Iam::V1::TestIamPermissionsRequest)
  @test_iam_permissions.call(req, options, &block)
end

#update_database_ddl(database, statements, operation_id: nil, options: nil) ⇒ Google::Gax::Operation

Updates the schema of a Cloud Spanner database by creating/altering/dropping tables, columns, indexes, etc. The returned long-running operation will have a name of the format <database_name>/operations/<operation_id> and can be used to track execution of the schema change(s). The metadata field type is UpdateDatabaseDdlMetadata. The operation has no response.

Examples:

require "google/cloud/spanner/admin/database"

database_admin_client = Google::Cloud::Spanner::Admin::Database.new(version: :v1)
formatted_database = Google::Cloud::Spanner::Admin::Database::V1::DatabaseAdminClient.database_path("[PROJECT]", "[INSTANCE]", "[DATABASE]")

# TODO: Initialize `statements`:
statements = []

# Register a callback during the method call.
operation = database_admin_client.update_database_ddl(formatted_database, statements) do |op|
  raise op.results.message if op.error?
  op_results = op.results
  # Process the results.

  metadata = op.metadata
  # Process the metadata.
end

# Or use the return value to register a callback.
operation.on_done do |op|
  raise op.results.message if op.error?
  op_results = op.results
  # Process the results.

  metadata = op.metadata
  # Process the metadata.
end

# Manually reload the operation.
operation.reload!

# Or block until the operation completes, triggering callbacks on
# completion.
operation.wait_until_done!

Parameters:

  • database (String) —

    Required. The database to update.

  • statements (Array<String>) —

    DDL statements to be applied to the database.

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

    If empty, the new update request is assigned an automatically-generated operation ID. Otherwise, operation_id is used to construct the name of the resulting Operation.

    Specifying an explicit operation ID simplifies determining whether the statements were executed in the event that the UpdateDatabaseDdl call is replayed, or the return value is otherwise lost: the database and operation_id fields can be combined to form the name of the resulting longrunning::Operation: <database>/operations/<operation_id>.

    operation_id should be unique within the database, and must be a valid identifier: [a-z][a-z0-9_]*. Note that automatically-generated operation IDs always begin with an underscore. If the named operation already exists, UpdateDatabaseDdl returns ALREADY_EXISTS.

  • options (Google::Gax::CallOptions) (defaults to: nil) —

    Overrides the default settings for this call, e.g, timeout, retries, etc.

Returns:

  • (Google::Gax::Operation)

Raises:

  • (Google::Gax::GaxError) —

    if the RPC is aborted.



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# File 'lib/google/cloud/spanner/admin/database/v1/database_admin_client.rb', line 564

def update_database_ddl \
    database,
    statements,
    operation_id: nil,
    options: nil
  req = {
    database: database,
    statements: statements,
    operation_id: operation_id
  }.delete_if { |_, v| v.nil? }
  req = Google::Gax::to_proto(req, Google::Spanner::Admin::Database::V1::UpdateDatabaseDdlRequest)
  operation = Google::Gax::Operation.new(
    @update_database_ddl.call(req, options),
    @operations_client,
    Google::Protobuf::Empty,
    Google::Spanner::Admin::Database::V1::UpdateDatabaseDdlMetadata,
    call_options: options
  )
  operation.on_done { |operation| yield(operation) } if block_given?
  operation
end