Class: Wackamole::Control

Inherits:
Object
  • Object
show all
Defined in:
lib/wackamole/models/control.rb

Class Method Summary collapse

Class Method Details

.collection(cltn_name, db_name = nil, opts = {:strict => true}) ⇒ Object

Fetch a collection on a given database by name



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# File 'lib/wackamole/models/control.rb', line 29

def self.collection( cltn_name, db_name=nil, opts={:strict => true} )
  # reset_db!( db_name ) if db_name
  db( db_name, opts ).collection( cltn_name )
end

.extract_app_info(db_name) ⇒ Object

extract app_name + env from db_name



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# File 'lib/wackamole/models/control.rb', line 36

def self.extract_app_info( db_name )
  raise "Invalid mole db specification #{db_name}" unless db_name =~ molex
  db_name.match( molex ).captures
end

.init_config(config_file, env) ⇒ Object

Initialize app by reading off mongo configuration parameters if necessary



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# File 'lib/wackamole/models/control.rb', line 9

def self.init_config( config_file, env )
  begin
    config  = YAML.load_file( config_file )
    @config = config[env]
    raise "Invalid environment `#{env}" unless @config
    raise "Unable to find host in - #{@config.inspect}" unless @config.has_key?('host')
    raise "Unable to find port in - #{@config.inspect}" unless @config.has_key?('port')            
  rescue => boom
    @config = nil          
    raise "Hoy! An error occur loading the config file `#{config_file} -- #{boom}"
  end
  @config
end

.mole_databases ⇒ Object

Inspect current connection databases and weed out mole_xxx databases



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# File 'lib/wackamole/models/control.rb', line 56

def self.mole_databases
  connection.database_names.select do |db_name|
    db_name if mole_db?( db_name )
  end
end

.molex ⇒ Object

Defines mole db identity



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# File 'lib/wackamole/models/control.rb', line 25

def self.molex() @molex || /mole_(.*)?_(.*)?_mdb/; end

.switch_mole_db!(app_name, env) ⇒ Object

Switch db instance given db_name NOTE : This assumes mole db naming convention ie mole_in lower case_env_mdb



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# File 'lib/wackamole/models/control.rb', line 45

def self.switch_mole_db!( app_name, env )
  raise "You must specify an app name and environment" unless app_name and env      
  app = app_name.gsub( /\s/, '_' ).downcase
  db_name = to_mole_db( app_name, env )
  raise "Invalid mole database #{db_name}" unless mole_db?( db_name )      
  reset_db!( db_name )
  @db
end