class Shamu::Events::ActiveRecord::Migration
Prepare the database for storing event messages.
Public Instance Methods
down()
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# File lib/shamu/events/active_record/migration.rb, line 38 def down drop_table Message.table_name if data_source_exists? Message.table_name drop_table Channel.table_name if data_source_exists? Channel.table_name drop_table Runner.table_name if data_source_exists? Runner.table_name end
up()
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# File lib/shamu/events/active_record/migration.rb, line 10 def up return if data_source_exists? Message.table_name # TODO: Need to provide a means for using 64-bit primary keys in # databases that support it. Otherwise limited to 4B events. create_table Message.table_name do |t| t.integer :channel_id, null: false t.string :message, null: false t.index :id t.index :channel_id end create_table Channel.table_name do |t| t.string :name, null: false, unique: true t.index :name end create_table Runner.table_name, id: false do |t| t.timestamp :last_processed_at t.integer :last_processed_id t.string :id, null: false t.index :id, unique: true end end