eprothro/cassie

module Cassie
  # Contains interface and components for managing
  # Cassandra schema using semantically versioned,
  # incremental migration files.
  #
  # * Versioned migration files are stored in-repo in ruby files defining +up+ and +down+ mutation methods.
  # * Data about what migrations have been applied is stored in Cassandra persistence.
  # * The schema state is stored in an in-repo schema file that contains the CQL required to recreate the current schema state/version from scratch.
  # * Various +cassie+ executable commands provide an interface to manage migrations and versioning.
  #
  # Run +cassie --help+ to see a list of commands and their descriptions for managing the schema through versioned migrations.
  #
  # @see file:lib/cassie/schema/README.md Schema README for information on task usage and the migration DSL.
  module Schema
    require_relative 'schema/configuration'
    require_relative 'schema/versioning'
    require_relative 'schema/definition'

    extend Configuration
    extend Versioning
    extend Definition

    # The application namespace. Only applicaple
    # When cassie manages multiple application
    # schemas within the same cluster.
    # @return [String] the application namespace
    def self.application
      return @application if defined?(@application)
      "global"
    end

    def self.application=(app_name)
      @application = app_name
    end
  end

  require_relative 'schema/structure_dumper'
  require_relative 'schema/structure_loader'
  require_relative 'schema/schema_loader'
  require_relative 'schema/schema_dumper'
end