Module: Aws::SessionStore::DynamoDB::Table

Defined in:

lib/aws/session_store/dynamo_db/table.rb

Overview

This class provides a way to create and delete a session table.

Class Method Summary

• .create_table(options = {}) ⇒ Object

  Creates a session table.

• .delete_table(options = {}) ⇒ Object

  Deletes a session table.

Class Method Details

.create_table(options = {}) ⇒ Object

Creates a session table.

Options Hash (options):

• :table_name (String) — default: "Sessions" —

  Name of the session table.

• :table_key (String) — default: "id" —

  The hash key of the sesison table.

• :consistent_read (Boolean) — default: true —

  If true, a strongly consistent read is used. If false, an eventually consistent read is used.

• :read_capacity (Integer) — default: 10 —

  The maximum number of strongly consistent reads consumed per second before DynamoDB raises a ThrottlingException. See AWS DynamoDB documentation for table read_capacity for more information on this setting.

• :write_capacity (Integer) — default: 5 —

  The maximum number of writes consumed per second before DynamoDB returns a ThrottlingException. See AWS DynamoDB documentation for table write_capacity for more information on this setting.

• :dynamo_db_client (DynamoDB Client) — default: Aws::DynamoDB::Client —

  DynamoDB client used to perform database operations inside of middleware application.

• :raise_errors (Boolean) — default: false —

  If true, all errors are raised up the stack when default ErrorHandler. If false, Only specified errors are raised up the stack when default ErrorHandler is used.

• :error_handler (Error Handler) — default: DefaultErrorHandler —

  An error handling object that handles all exceptions thrown during execution of the AWS DynamoDB Session Store Rack Middleware. For more information see the Handling Errors Section.

• :max_age (Integer) — default: nil —

  Maximum number of seconds earlier from the current time that a session was created.

• :max_stale (Integer) — default: nil —

  Maximum number of seconds before current time that session was last accessed.

• :secret_key (String) — default: nil —

  Secret key for HMAC encription.

• :enable_locking (Integer) — default: false —

  If true, a pessimistic locking strategy will be implemented for all session accesses. If false, no locking strategy will be implemented for all session accesses.

• :lock_expiry_time (Integer) — default: 500 —

  Time in milliseconds after which lock expires on session.

• :lock_retry_delay (Integer) — default: 500 —

  Time in milleseconds to wait before retrying to obtain lock once an attempt to obtain lock has been made and has failed.

• :lock_max_wait_time (Integer) — default: 500 —

  Maximum time in seconds to wait to acquire lock before giving up.

• :secret_key (String) — default: SecureRandom.hex(64) —

  Secret key for HMAC encription.

# File 'lib/aws/session_store/dynamo_db/table.rb', line 11

def create_table(options = {})
  config = load_config(options)
  ddb_options = properties(config.table_name, config.table_key).merge(
      throughput(config.read_capacity, config.write_capacity)
    )
  config.dynamo_db_client.create_table(ddb_options)
  logger << "Table #{config.table_name} created, waiting for activation...\n"
  block_until_created(config)
  logger << "Table #{config.table_name} is now ready to use.\n"
rescue Aws::DynamoDB::Errors::ResourceInUseException
  logger << "Table #{config.table_name} already exists, skipping creation.\n"
end

.delete_table(options = {}) ⇒ Object

Deletes a session table.

Options Hash (options):

• :table_name (String) — default: "Sessions" —

  Name of the session table.

• :table_key (String) — default: "id" —

  The hash key of the sesison table.

• :consistent_read (Boolean) — default: true —

  If true, a strongly consistent read is used. If false, an eventually consistent read is used.

• :read_capacity (Integer) — default: 10 —

  The maximum number of strongly consistent reads consumed per second before DynamoDB raises a ThrottlingException. See AWS DynamoDB documentation for table read_capacity for more information on this setting.

• :write_capacity (Integer) — default: 5 —

  The maximum number of writes consumed per second before DynamoDB returns a ThrottlingException. See AWS DynamoDB documentation for table write_capacity for more information on this setting.

• :dynamo_db_client (DynamoDB Client) — default: Aws::DynamoDB::Client —

  DynamoDB client used to perform database operations inside of middleware application.

• :raise_errors (Boolean) — default: false —

  If true, all errors are raised up the stack when default ErrorHandler. If false, Only specified errors are raised up the stack when default ErrorHandler is used.

• :error_handler (Error Handler) — default: DefaultErrorHandler —

  An error handling object that handles all exceptions thrown during execution of the AWS DynamoDB Session Store Rack Middleware. For more information see the Handling Errors Section.

• :max_age (Integer) — default: nil —

  Maximum number of seconds earlier from the current time that a session was created.

• :max_stale (Integer) — default: nil —

  Maximum number of seconds before current time that session was last accessed.

• :secret_key (String) — default: nil —

  Secret key for HMAC encription.

• :enable_locking (Integer) — default: false —

  If true, a pessimistic locking strategy will be implemented for all session accesses. If false, no locking strategy will be implemented for all session accesses.

• :lock_expiry_time (Integer) — default: 500 —

  Time in milliseconds after which lock expires on session.

• :lock_retry_delay (Integer) — default: 500 —

  Time in milleseconds to wait before retrying to obtain lock once an attempt to obtain lock has been made and has failed.

• :lock_max_wait_time (Integer) — default: 500 —

  Maximum time in seconds to wait to acquire lock before giving up.

• :secret_key (String) — default: SecureRandom.hex(64) —

  Secret key for HMAC encription.

# File 'lib/aws/session_store/dynamo_db/table.rb', line 26

def delete_table(options = {})
  config = load_config(options)
  config.dynamo_db_client.delete_table(:table_name => config.table_name)
end