Class: MonarchMigrate::Migration

Inherits:
Object
  • Object
show all
Defined in:
lib/monarch_migrate/migration.rb

Defined Under Namespace

Modules: Lookup

Instance Method Summary collapse

Constructor Details

#initialize(path) ⇒ Migration

Returns a new instance of Migration.



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# File 'lib/monarch_migrate/migration.rb', line 15

def initialize(path)
  @path = path.to_s
  @after_commit_callback = nil
end

Instance Method Details

#after_commit(&block) ⇒ Object 



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# File 'lib/monarch_migrate/migration.rb', line 36

def after_commit(&block)
  @after_commit_callback = block
end

#filename ⇒ Object 



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# File 'lib/monarch_migrate/migration.rb', line 20

def filename
  File.basename(path)
end

#name ⇒ Object 



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# File 'lib/monarch_migrate/migration.rb', line 24

def name
  File.basename(path, ".rb").delete_prefix("#{version}_").humanize
end

#pending? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/monarch_migrate/migration.rb', line 32

def pending?
  !MigrationRecord.exists?(version: version)
end

#run ⇒ Object 



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# File 'lib/monarch_migrate/migration.rb', line 40

def run
  ActiveRecord::Base.connection.transaction do
    puts "Running data migration #{version}: #{name}"

    begin
      instance_eval File.read(path), path
      MigrationRecord.create!(version: version)
      puts "Migration complete"
    rescue => e
      puts "Migration failed due to #{e}"
      # Deliberately raising ActiveRecord::Rollback does not
      # pass on the exception and the callback will be triggered
      raise
    end

    puts
  end

  after_commit_callback&.call
end

#version ⇒ Object 



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# File 'lib/monarch_migrate/migration.rb', line 28

def version
  filename.match(/^([0-9]+)_/)[1]
end