Class: ActiveRecord::Tasks::PostgreSQLDatabaseTasks

Inherits:
Object
  • Object
show all
Defined in:
lib/active_record/tasks/postgresql_database_tasks.rb

Overview

:nodoc:

Constant Summary collapse

DEFAULT_ENCODING = 
ENV['CHARSET'] || 'utf8'

Instance Method Summary collapse

Constructor Details

#initialize(configuration) ⇒ PostgreSQLDatabaseTasks

Returns a new instance of PostgreSQLDatabaseTasks.



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# File 'lib/active_record/tasks/postgresql_database_tasks.rb', line 9

def initialize(configuration)
  @configuration = configuration
end

Instance Method Details

#charset ⇒ Object 



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# File 'lib/active_record/tasks/postgresql_database_tasks.rb', line 31

def charset
  connection.encoding
end

#collation ⇒ Object 



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# File 'lib/active_record/tasks/postgresql_database_tasks.rb', line 35

def collation
  connection.collation
end

#create(master_established = false) ⇒ Object 



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# File 'lib/active_record/tasks/postgresql_database_tasks.rb', line 13

def create(master_established = false)
  establish_master_connection unless master_established
  connection.create_database configuration['database'],
    configuration.merge('encoding' => encoding)
  establish_connection configuration
rescue ActiveRecord::StatementInvalid => error
  if error.cause.is_a?(PG::DuplicateDatabase)
    raise DatabaseAlreadyExists
  else
    raise
  end
end

#drop ⇒ Object 



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# File 'lib/active_record/tasks/postgresql_database_tasks.rb', line 26

def drop
  establish_master_connection
  connection.drop_database configuration['database']
end

#purge ⇒ Object 



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# File 'lib/active_record/tasks/postgresql_database_tasks.rb', line 39

def purge
  clear_active_connections!
  drop
  create true
end

#structure_dump(filename) ⇒ Object 



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# File 'lib/active_record/tasks/postgresql_database_tasks.rb', line 45

def structure_dump(filename)
  set_psql_env

  search_path = case ActiveRecord::Base.dump_schemas
  when :schema_search_path
    configuration['schema_search_path']
  when :all
    nil
  when String
    ActiveRecord::Base.dump_schemas
  end

  args = ['-s', '-x', '-O', '-f', filename]
  unless search_path.blank?
    args += search_path.split(',').map do |part|
      "--schema=#{part.strip}"
    end
  end
  args << configuration['database']
  run_cmd('pg_dump', args, 'dumping')
  File.open(filename, "a") { |f| f << "SET search_path TO #{connection.schema_search_path};\n\n" }
end

#structure_load(filename) ⇒ Object 



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# File 'lib/active_record/tasks/postgresql_database_tasks.rb', line 68

def structure_load(filename)
  set_psql_env
  args = [ '-q', '-f', filename, configuration['database'] ]
  run_cmd('psql', args, 'loading' )
end