Class: ActiveRecordSpannerAdapter::Connection
- Inherits:
-
Object
- Object
- ActiveRecordSpannerAdapter::Connection
- Defined in:
- lib/activerecord_spanner_adapter/connection.rb
Instance Attribute Summary collapse
-
#current_transaction ⇒ Object
Returns the value of attribute current_transaction.
-
#database_id ⇒ Object
readonly
Returns the value of attribute database_id.
-
#instance_id ⇒ Object
readonly
Returns the value of attribute instance_id.
-
#spanner ⇒ Object
readonly
Returns the value of attribute spanner.
Class Method Summary collapse
Instance Method Summary collapse
-
#abort_batch ⇒ Object
Aborts the current batch on this connection.
- #active? ⇒ Boolean
-
#begin_transaction(isolation = nil) ⇒ Object
Transactions.
- #commit_transaction ⇒ Object
-
#create_database ⇒ Object
Database Operations.
-
#create_transaction_after_failed_first_statement(original_error) ⇒ Object
Creates a transaction using a BeginTransaction RPC.
- #database ⇒ Object
-
#ddl_batch ⇒ Object
Executes a set of DDL statements as one batch.
-
#ddl_batch? ⇒ Boolean
Returns true if this connection is currently executing a DDL batch, and otherwise false.
- #disconnect! ⇒ Object
- #execute_ddl(statements, operation_id: nil, wait_until_done: true) ⇒ Object
-
#execute_query(sql, params: nil, types: nil, single_use_selector: nil) ⇒ Object
DQL, DML Statements.
- #execute_sql_request(sql, converted_params, types, selector) ⇒ Object
-
#initialize(config) ⇒ Connection
constructor
A new instance of Connection.
- #raise_aborted_err ⇒ Object
- #reset! ⇒ Object
- #rollback_transaction ⇒ Object
-
#run_batch ⇒ Object
Runs the current batch on this connection.
- #session ⇒ Object (also: #connect!)
- #session_not_found?(err) ⇒ Boolean
-
#start_batch_ddl ⇒ Object
Starts a manual DDL batch.
- #transaction_not_found?(err) ⇒ Boolean
- #transaction_selector ⇒ Object
- #truncate(table_name) ⇒ Object
Constructor Details
#initialize(config) ⇒ Connection
Returns a new instance of Connection.
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# File 'lib/activerecord_spanner_adapter/connection.rb', line 16 def initialize config @instance_id = config[:instance] @database_id = config[:database] @spanner = self.class.spanners config end |
Instance Attribute Details
#current_transaction ⇒ Object
Returns the value of attribute current_transaction.
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# File 'lib/activerecord_spanner_adapter/connection.rb', line 14 def current_transaction @current_transaction end |
#database_id ⇒ Object (readonly)
Returns the value of attribute database_id.
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# File 'lib/activerecord_spanner_adapter/connection.rb', line 13 def database_id @database_id end |
#instance_id ⇒ Object (readonly)
Returns the value of attribute instance_id.
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# File 'lib/activerecord_spanner_adapter/connection.rb', line 13 def instance_id @instance_id end |
#spanner ⇒ Object (readonly)
Returns the value of attribute spanner.
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# File 'lib/activerecord_spanner_adapter/connection.rb', line 13 def spanner @spanner end |
Class Method Details
.database_path(config) ⇒ Object
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# File 'lib/activerecord_spanner_adapter/connection.rb', line 287 def self.database_path config "#{config[:emulator_host]}/#{config[:project]}/#{config[:instance]}/#{config[:database]}" end |
.information_schema(config) ⇒ Object
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# File 'lib/activerecord_spanner_adapter/connection.rb', line 39 def self.information_schema config @information_schemas ||= {} @information_schemas[database_path(config)] ||= \ ActiveRecordSpannerAdapter::InformationSchema.new new(config) end |
.spanners(config) ⇒ Object
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# File 'lib/activerecord_spanner_adapter/connection.rb', line 22 def self.spanners config config = config.symbolize_keys @spanners ||= {} @mutex ||= Mutex.new @mutex.synchronize do @spanners[database_path(config)] ||= Google::Cloud::Spanner.new( project_id: config[:project], credentials: config[:credentials], emulator_host: config[:emulator_host], scope: config[:scope], timeout: config[:timeout], lib_name: "spanner-activerecord-adapter", lib_version: ActiveRecordSpannerAdapter::VERSION ) end end |
Instance Method Details
#abort_batch ⇒ Object
Aborts the current batch on this connection. This is a no-op if there is no batch on this connection.
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# File 'lib/activerecord_spanner_adapter/connection.rb', line 174 def abort_batch @ddl_batch = nil end |
#active? ⇒ Boolean
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# File 'lib/activerecord_spanner_adapter/connection.rb', line 51 def active? # This method should not initialize a session. unless @session return false end # Assume that it is still active if it has been used in the past 50 minutes. if ((Time.current - @last_used) / 60).round < 50 return true end session.execute_query "SELECT 1" true rescue StandardError false end |
#begin_transaction(isolation = nil) ⇒ Object
Transactions
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# File 'lib/activerecord_spanner_adapter/connection.rb', line 262 def begin_transaction isolation = nil raise "Nested transactions are not allowed" if current_transaction&.active? self.current_transaction = Transaction.new self, isolation current_transaction.begin current_transaction end |
#commit_transaction ⇒ Object
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# File 'lib/activerecord_spanner_adapter/connection.rb', line 269 def commit_transaction raise "This connection does not have a transaction" unless current_transaction current_transaction.commit end |
#create_database ⇒ Object
Database Operations
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# File 'lib/activerecord_spanner_adapter/connection.rb', line 81 def create_database job = spanner.create_database instance_id, database_id job.wait_until_done! raise Google::Cloud::Error.from_error job.error if job.error? job.database end |
#create_transaction_after_failed_first_statement(original_error) ⇒ Object
Creates a transaction using a BeginTransaction RPC. This is used if the first statement of a transaction fails, as that also means that no transaction id was returned.
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# File 'lib/activerecord_spanner_adapter/connection.rb', line 252 def create_transaction_after_failed_first_statement original_error transaction = current_transaction.force_begin_read_write Google::Cloud::Spanner::V1::TransactionSelector.new id: transaction.transaction_id rescue Google::Cloud::Error # Raise the original error if the BeginTransaction RPC also fails. raise original_error end |
#database ⇒ Object
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# File 'lib/activerecord_spanner_adapter/connection.rb', line 88 def database @database ||= begin database = spanner.database instance_id, database_id unless database raise ActiveRecord::NoDatabaseError( "#{spanner.project}/#{instance_id}/#{database_id}" ) end database end end |
#ddl_batch ⇒ Object
Executes a set of DDL statements as one batch. This method raises an error if no block is given.
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# File 'lib/activerecord_spanner_adapter/connection.rb', line 129 def ddl_batch raise Google::Cloud::FailedPreconditionError, "No block given for the DDL batch" unless block_given? begin start_batch_ddl yield run_batch rescue StandardError abort_batch raise ensure @ddl_batch = nil end end |
#ddl_batch? ⇒ Boolean
Returns true if this connection is currently executing a DDL batch, and otherwise false.
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# File 'lib/activerecord_spanner_adapter/connection.rb', line 145 def ddl_batch? return true if @ddl_batch false end |
#disconnect! ⇒ Object
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# File 'lib/activerecord_spanner_adapter/connection.rb', line 66 def disconnect! session.release! true ensure @session = nil end |
#execute_ddl(statements, operation_id: nil, wait_until_done: true) ⇒ Object
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# File 'lib/activerecord_spanner_adapter/connection.rb', line 103 def execute_ddl statements, operation_id: nil, wait_until_done: true raise "DDL cannot be executed during a transaction" if current_transaction&.active? self.current_transaction = nil statements = Array statements return unless statements.any? # If a DDL batch is active we only buffer the statements on the connection until the batch is run. if @ddl_batch @ddl_batch.push(*statements) return true end execute_ddl_statements statements, operation_id, wait_until_done end |
#execute_query(sql, params: nil, types: nil, single_use_selector: nil) ⇒ Object
DQL, DML Statements
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# File 'lib/activerecord_spanner_adapter/connection.rb', line 198 def execute_query sql, params: nil, types: nil, single_use_selector: nil if params converted_params, types = \ Google::Cloud::Spanner::Convert.to_input_params_and_types( params, types ) end # Clear the transaction from the previous statement. unless current_transaction&.active? self.current_transaction = nil end selector = transaction_selector || single_use_selector execute_sql_request sql, converted_params, types, selector end |
#execute_sql_request(sql, converted_params, types, selector) ⇒ Object
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# File 'lib/activerecord_spanner_adapter/connection.rb', line 215 def execute_sql_request sql, converted_params, types, selector res = session.execute_query \ sql, params: converted_params, types: types, transaction: selector, seqno: (current_transaction&.next_sequence_number) current_transaction.grpc_transaction = res..transaction \ if current_transaction && res&.&.transaction res rescue Google::Cloud::AbortedError # Mark the current transaction as aborted to prevent any unnecessary further requests on the transaction. current_transaction&.mark_aborted raise rescue Google::Cloud::NotFoundError => e if session_not_found?(e) || transaction_not_found?(e) reset! # Force a retry of the entire transaction if this statement was executed as part of a transaction. # Otherwise, just retry the statement itself. raise_aborted_err if current_transaction&.active? retry end raise rescue Google::Cloud::Error => e # Check if it was the first statement in a transaction that included a BeginTransaction # option in the request. If so, execute an explicit BeginTransaction and then retry the # request without the BeginTransaction option. if current_transaction && selector&.begin&.read_write selector = create_transaction_after_failed_first_statement e retry end # It was not the first statement, so propagate the error. raise end |
#raise_aborted_err ⇒ Object
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# File 'lib/activerecord_spanner_adapter/connection.rb', line 309 def raise_aborted_err retry_info = Google::Rpc::RetryInfo.new retry_delay: Google::Protobuf::Duration.new(seconds: 0, nanos: 1) begin raise GRPC::BadStatus.new( GRPC::Core::StatusCodes::ABORTED, "Transaction aborted", "google.rpc.retryinfo-bin": Google::Rpc::RetryInfo.encode(retry_info) ) rescue GRPC::BadStatus raise Google::Cloud::AbortedError end end |
#reset! ⇒ Object
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# File 'lib/activerecord_spanner_adapter/connection.rb', line 73 def reset! disconnect! session true end |
#rollback_transaction ⇒ Object
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# File 'lib/activerecord_spanner_adapter/connection.rb', line 274 def rollback_transaction raise "This connection does not have a transaction" unless current_transaction current_transaction.rollback end |
#run_batch ⇒ Object
Runs the current batch on this connection. This will raise a FailedPreconditionError if there is no active batch on this connection.
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# File 'lib/activerecord_spanner_adapter/connection.rb', line 183 def run_batch unless @ddl_batch raise Google::Cloud::FailedPreconditionError, "There is no batch active on this connection" end # Just return if the batch is empty. return true if @ddl_batch.empty? begin execute_ddl_statements @ddl_batch, nil, true ensure @ddl_batch = nil end end |
#session ⇒ Object Also known as: connect!
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# File 'lib/activerecord_spanner_adapter/connection.rb', line 45 def session @last_used = Time.current @session ||= spanner.create_session instance_id, database_id end |
#session_not_found?(err) ⇒ Boolean
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# File 'lib/activerecord_spanner_adapter/connection.rb', line 291 def session_not_found? err if err.respond_to?(:metadata) && err.["google.rpc.resourceinfo-bin"] resource_info = Google::Rpc::ResourceInfo.decode err.["google.rpc.resourceinfo-bin"] type = resource_info["resource_type"] return "type.googleapis.com/google.spanner.v1.Session".eql? type end false end |
#start_batch_ddl ⇒ Object
Starts a manual DDL batch. The batch must be ended by calling either run_batch or abort_batch.
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# File 'lib/activerecord_spanner_adapter/connection.rb', line 163 def start_batch_ddl if @ddl_batch raise Google::Cloud::FailedPreconditionError, "A DDL batch is already active on this connection" end @ddl_batch = [] end |
#transaction_not_found?(err) ⇒ Boolean
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# File 'lib/activerecord_spanner_adapter/connection.rb', line 300 def transaction_not_found? err if err.respond_to?(:metadata) && err.["google.rpc.resourceinfo-bin"] resource_info = Google::Rpc::ResourceInfo.decode err.["google.rpc.resourceinfo-bin"] type = resource_info["resource_type"] return "type.googleapis.com/google.spanner.v1.Transaction".eql? type end false end |
#transaction_selector ⇒ Object
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# File 'lib/activerecord_spanner_adapter/connection.rb', line 279 def transaction_selector return current_transaction&.transaction_selector if current_transaction&.active? end |
#truncate(table_name) ⇒ Object
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# File 'lib/activerecord_spanner_adapter/connection.rb', line 283 def truncate table_name session.delete table_name end |