module PgHaMigrations

Constants

Config
InvalidMigrationError

Invalid migrations are operations which we expect to not function as expected or get the schema into an inconsistent state

LOCK_FAILURE_RETRY_DELAY_MULTLIPLIER
LOCK_TIMEOUT_SECONDS
UnsafeMigrationError

Safe versus unsafe in this context specifically means the following:

  • Safe operations will not block for long periods of time.

  • Unsafe operations may block for long periods of time.

UnsupportedAdapter

This gem only supports the PostgreSQL adapter at this time.

UnsupportedMigrationError

Unsupported migrations use ActiveRecord::Migration features that we don't support, and therefore will likely have unexpected behavior.

VERSION

Public Class Methods

config() click to toggle source 
# File lib/pg_ha_migrations.rb, line 14
def self.config
  @config ||= Config.new(
    true,
    false,
    true
  )
end
configure() { |config| ... } click to toggle source 
# File lib/pg_ha_migrations.rb, line 22
def self.configure
  yield config
end