Class: CouchMigrate::BaseMigrater

Inherits:
Object
  • Object
show all
Defined in:
lib/couch_migrate/base_migrater.rb

Direct Known Subclasses

CouchMigrater, FileMigrater

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(persisted_list = nil, executer = nil, migration_directory = "db/migrations") ⇒ BaseMigrater

Returns a new instance of BaseMigrater.



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# File 'lib/couch_migrate/base_migrater.rb', line 9

def initialize(persisted_list = nil, executer = nil, migration_directory = "db/migrations")
  @raw_migrations = []
  @completed_migrations = persisted_list || BasePersistedList.new
  @executer = executer || BaseExecuter
  directory(migration_directory)
  self
end

Instance Attribute Details

#failed_migration ⇒ Object (readonly)

Returns the value of attribute failed_migration.



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# File 'lib/couch_migrate/base_migrater.rb', line 7

def failed_migration
  @failed_migration
end

Instance Method Details

#completed_migrations(arr = nil) ⇒ Object 



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# File 'lib/couch_migrate/base_migrater.rb', line 77

def completed_migrations(arr=nil)
  return @completed_migrations.get if arr.nil?
  @completed_migrations.set(arr)
  self
end

#directory(path = nil) ⇒ Object 



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# File 'lib/couch_migrate/base_migrater.rb', line 47

def directory(path=nil)
  return @directory if path.nil?
  @directory = Pathname.new(path)
  refresh_raw_migrations
  self
end

#migrate(*args) ⇒ Object 



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# File 'lib/couch_migrate/base_migrater.rb', line 17

def migrate(*args)
  migration_reserved_args= [:quiet]
  executer_args = args - migration_reserved_args

  @failed_migration, completed = nil, []
  direction, action, migrations = if args.include?(:down)
    [:down, :remove, [completed_migrations.last]]
  else
    [:up, :add, pending_migrations]
  end

  migrations.compact.each do |migration|
    begin
      puts '-'*40, "Migration #{direction} (#{migration})" unless args.include?(:quiet)
      str = File.read(@directory + migration)
      @executer.new(executer_args, str, migration).go
      completed << migration
      puts '-'*40 unless args.include?(:quiet)
    rescue Exception => e
      @failed_migration = migration
      puts '-'*5,"FAILURE in migration #{direction} (#{migration}) with message:", e.message, '-'*5, e.backtrace[0...10], '-'*40 unless args.include?(:quiet)
      return {success: completed, failed: [@failed_migration]}
    end
  end

  return completed.empty? ? {} : {success: completed}
ensure
  @completed_migrations.send(action, completed)
end

#pending_migrations ⇒ Object 



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# File 'lib/couch_migrate/base_migrater.rb', line 83

def pending_migrations
  raw_migrations - completed_migrations
end

#raw_migrations(arr = nil) ⇒ Object 



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# File 'lib/couch_migrate/base_migrater.rb', line 71

def raw_migrations(arr=nil)
  return @raw_migrations if arr.nil?
  refresh_raw_migrations(arr)
  self
end

#refresh_raw_migrations(arr = nil) ⇒ Object 



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# File 'lib/couch_migrate/base_migrater.rb', line 64

def refresh_raw_migrations(arr=nil)
  raise "argument must be an array" unless arr.nil? || arr.is_a?(Array)
  arr ||= Pathname.new(@directory).children(with_directory = false) rescue []
  @raw_migrations = filter_and_sort(arr)
  self
end

#reload ⇒ Object 



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# File 'lib/couch_migrate/base_migrater.rb', line 59

def reload
  refresh_raw_migrations
  self
end

#reset ⇒ Object 



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# File 'lib/couch_migrate/base_migrater.rb', line 54

def reset
  @completed_migrations.reset
  self
end