Module: Google::Cloud::Bigquery::Connection

Defined in:
lib/google/cloud/bigquery/connection.rb,
lib/google/cloud/bigquery/connection/version.rb

Constant Summary collapse

VERSION = 
"1.6.2"

Class Method Summary collapse

Class Method Details

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

Configure the google-cloud-bigquery-connection library.

The following configuration parameters are supported:

  • credentials (type: 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.
  • lib_name (type: String) - The library name as recorded in instrumentation and logging.
  • lib_version (type: String) - The library version as recorded in instrumentation and logging.
  • interceptors (type: Array<GRPC::ClientInterceptor>) - An array of interceptors that are run before calls are executed.
  • timeout (type: Numeric) - Default timeout in seconds.
  • metadata (type: Hash{Symbol=>String}) - Additional headers to be sent with the call.
  • retry_policy (type: Hash) - The retry policy. The value is a hash with the following keys:
    • :initial_delay (type: Numeric) - The initial delay in seconds.
    • :max_delay (type: Numeric) - The max delay in seconds.
    • :multiplier (type: Numeric) - The incremental backoff multiplier.
    • :retry_codes (type: Array<String>) - The error codes that should trigger a retry.

Yields:

Returns:

  • (::Google::Cloud::Config) —

    The default configuration used by this library



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# File 'lib/google/cloud/bigquery/connection.rb', line 147

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

  ::Google::Cloud.configure.bigquery_connection
end

.connection_service(version: :v1, transport: :grpc, &block) ⇒ ::Object

Create a new client object for ConnectionService.

By default, this returns an instance of Google::Cloud::Bigquery::Connection::V1::ConnectionService::Client for a gRPC client for version V1 of the API. However, you can specify a different API version by passing it in the version parameter. If the ConnectionService service is supported by that API version, and the corresponding gem is available, the appropriate versioned client will be returned. You can also specify a different transport by passing :rest or :grpc in the transport parameter.

Raises an exception if the currently installed versioned client gem for the given API version does not support the given transport of the ConnectionService service. You can determine whether the method will succeed by calling connection_service_available?.

About ConnectionService

Manages external data source connections and credentials.

Parameters:

  • version (::String, ::Symbol) (defaults to: :v1) —

    The API version to connect to. Optional. Defaults to :v1.

  • transport (:grpc, :rest) (defaults to: :grpc) —

    The transport to use. Defaults to :grpc.

Returns:

  • (::Object) —

    A client object for the specified version.



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# File 'lib/google/cloud/bigquery/connection.rb', line 76

def self.connection_service version: :v1, transport: :grpc, &block
  require "google/cloud/bigquery/connection/#{version.to_s.downcase}"

  package_name = Google::Cloud::Bigquery::Connection
                 .constants
                 .select { |sym| sym.to_s.downcase == version.to_s.downcase.tr("_", "") }
                 .first
  service_module = Google::Cloud::Bigquery::Connection.const_get(package_name).const_get(:ConnectionService)
  service_module = service_module.const_get(:Rest) if transport == :rest
  service_module.const_get(:Client).new(&block)
end

.connection_service_available?(version: :v1, transport: :grpc) ⇒ boolean

Determines whether the ConnectionService service is supported by the current client. If true, you can retrieve a client object by calling connection_service. If false, that method will raise an exception. This could happen if the given API version does not exist or does not support the ConnectionService service, or if the versioned client gem needs an update to support the ConnectionService service.

Parameters:

  • version (::String, ::Symbol) (defaults to: :v1) —

    The API version to connect to. Optional. Defaults to :v1.

  • transport (:grpc, :rest) (defaults to: :grpc) —

    The transport to use. Defaults to :grpc.

Returns:

  • (boolean) —

    Whether the service is available.



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# File 'lib/google/cloud/bigquery/connection.rb', line 100

def self.connection_service_available? version: :v1, transport: :grpc
  require "google/cloud/bigquery/connection/#{version.to_s.downcase}"
  package_name = Google::Cloud::Bigquery::Connection
                 .constants
                 .select { |sym| sym.to_s.downcase == version.to_s.downcase.tr("_", "") }
                 .first
  return false unless package_name
  service_module = Google::Cloud::Bigquery::Connection.const_get package_name
  return false unless service_module.const_defined? :ConnectionService
  service_module = service_module.const_get :ConnectionService
  if transport == :rest
    return false unless service_module.const_defined? :Rest
    service_module = service_module.const_get :Rest
  end
  service_module.const_defined? :Client
rescue ::LoadError
  false
end