Module: Google::Cloud::Spanner

Defined in:

lib/google/cloud/spanner.rb,
lib/google/cloud/spanner/data.rb,
lib/google/cloud/spanner/pool.rb,
lib/google/cloud/spanner/range.rb,
lib/google/cloud/spanner/client.rb,
lib/google/cloud/spanner/commit.rb,
lib/google/cloud/spanner/errors.rb,
lib/google/cloud/spanner/fields.rb,
lib/google/cloud/spanner/policy.rb,
lib/google/cloud/spanner/status.rb,
lib/google/cloud/spanner/convert.rb,
lib/google/cloud/spanner/project.rb,
lib/google/cloud/spanner/results.rb,
lib/google/cloud/spanner/service.rb,
lib/google/cloud/spanner/session.rb,
lib/google/cloud/spanner/version.rb,
lib/google/cloud/spanner/database.rb,
lib/google/cloud/spanner/instance.rb,
lib/google/cloud/spanner/snapshot.rb,
lib/google/cloud/spanner/partition.rb,
lib/google/cloud/spanner/credentials.rb,
lib/google/cloud/spanner/transaction.rb,
lib/google/cloud/spanner/batch_client.rb,
lib/google/cloud/spanner/database/job.rb,
lib/google/cloud/spanner/instance/job.rb,
lib/google/cloud/spanner/database/list.rb,
lib/google/cloud/spanner/instance/list.rb,
lib/google/cloud/spanner/admin/database.rb,
lib/google/cloud/spanner/admin/instance.rb,
lib/google/cloud/spanner/batch_snapshot.rb,
lib/google/cloud/spanner/instance/config.rb,
lib/google/cloud/spanner/v1/doc/overview.rb,
lib/google/cloud/spanner/v1/spanner_client.rb,
lib/google/cloud/spanner/instance/config/list.rb,
lib/google/cloud/spanner/admin/database/credentials.rb,
lib/google/cloud/spanner/admin/instance/credentials.rb,
lib/google/cloud/spanner/admin/database/v1/doc/overview.rb,
lib/google/cloud/spanner/admin/instance/v1/doc/overview.rb,
lib/google/cloud/spanner/admin/database/v1/database_admin_client.rb,
lib/google/cloud/spanner/admin/instance/v1/instance_admin_client.rb

Overview

Ruby Client for Cloud Spanner API (Alpha)

Cloud Spanner API: Cloud Spanner is a managed, mission-critical, globally consistent and scalable relational database service.

• Product Documentation

Quick Start

In order to use this library, you first need to go through the following steps:

1. Select or create a Cloud Platform project.
2. Enable billing for your project.
3. Enable the Cloud Spanner API.
4. Setup Authentication.

Installation

$ gem install google-cloud-spanner

Next Steps

• Read the Cloud Spanner API Product documentation to learn more about the product and see How-to Guides.
• View this repository's main README to see the full list of Cloud APIs that we cover.

Defined Under Namespace

Modules: Admin, V1 Classes: BatchClient, BatchSnapshot, Client, ClientClosedError, Commit, Credentials, Data, Database, DuplicateNameError, Fields, Instance, Partition, Policy, Project, Range, Results, Rollback, SessionLimitError, Snapshot, Status, Transaction

Constant Summary

VERSION =

"1.3.1".freeze

Class Method Summary

• .configure {|Google::Cloud.configure.spanner| ... } ⇒ Google::Cloud::Config

  Configure the Google Cloud Spanner library.

• .new(project_id: nil, credentials: nil, scope: nil, timeout: nil, client_config: nil, project: nil, keyfile: nil) ⇒ Google::Cloud::Spanner::Project

  Creates a new object for connecting to the Spanner service.

Class Method Details

.configure {|Google::Cloud.configure.spanner| ... } ⇒ Google::Cloud::Config

Configure the Google Cloud Spanner library.

The following Spanner configuration parameters are supported:

• project_id - (String) Identifier for a Spanner project. (The parameter project is considered deprecated, but may also be used.)
• credentials - (String, Hash, Google::Auth::Credentials) The path to the keyfile as a String, the contents of the keyfile as a Hash, or a Google::Auth::Credentials object. (See Credentials) (The parameter keyfile is considered deprecated, but may also be used.)
• scope - (String, Array) The OAuth 2.0 scopes controlling the set of resources and operations that the connection can access.
• timeout - (Integer) Default timeout to use in requests.
• client_config - (Hash) A hash of values to override the default behavior of the API client.

Yields:

• (Google::Cloud.configure.spanner)

Returns:

• (Google::Cloud::Config) —

  The configuration object the Google::Cloud::Spanner library uses.

# File 'lib/google/cloud/spanner.rb', line 426

def self.configure
  yield Google::Cloud.configure.spanner if block_given?

  Google::Cloud.configure.spanner
end

.new(project_id: nil, credentials: nil, scope: nil, timeout: nil, client_config: nil, project: nil, keyfile: nil) ⇒ Google::Cloud::Spanner::Project

Creates a new object for connecting to the Spanner service. Each call creates a new connection.

For more information on connecting to Google Cloud see the Authentication Guide.

Examples:

require "google/cloud/spanner"

spanner = Google::Cloud::Spanner.new

Parameters:

• project_id (String) —

  Project identifier for the Spanner service you are connecting to. If not present, the default project for the credentials is used.

• credentials (String, Hash, Google::Auth::Credentials) —

  The path to the keyfile as a String, the contents of the keyfile as a Hash, or a Google::Auth::Credentials object. (See Credentials)

• scope (String, Array<String>) —

  The OAuth 2.0 scopes controlling the set of resources and operations that the connection can access. See Using OAuth 2.0 to Access Google APIs.

  The default scopes are:

  • https://www.googleapis.com/auth/spanner
  • https://www.googleapis.com/auth/spanner.data
• timeout (Integer) —

  Default timeout to use in requests. Optional.

• client_config (Hash) —

  A hash of values to override the default behavior of the API client. Optional.

• project (String) —

  Alias for the project_id argument. Deprecated.

• keyfile (String) —

  Alias for the credentials argument. Deprecated.

Returns:

• (Google::Cloud::Spanner::Project)

Raises:

• (ArgumentError)

# File 'lib/google/cloud/spanner.rb', line 384

def self.new project_id: nil, credentials: nil, scope: nil, timeout: nil,
             client_config: nil, project: nil, keyfile: nil
  project_id ||= (project || default_project_id)
  project_id = project_id.to_s # Always cast to a string
  raise ArgumentError, "project_id is missing" if project_id.empty?

  scope ||= configure.scope
  timeout ||= configure.timeout
  client_config ||= configure.client_config
  credentials ||= (keyfile || default_credentials(scope: scope))
  unless credentials.is_a? Google::Auth::Credentials
    credentials = Spanner::Credentials.new credentials, scope: scope
  end

  Spanner::Project.new(
    Spanner::Service.new(
      project_id, credentials, timeout: timeout,
                               client_config: client_config
    )
  )
end