Module: Jetpants

Defined in:
lib/jetpants.rb,
lib/jetpants.rb,
lib/jetpants/db.rb,
lib/jetpants/host.rb,
lib/jetpants/pool.rb,
lib/jetpants/shard.rb,
lib/jetpants/table.rb,
lib/jetpants/callback.rb,
lib/jetpants/db/state.rb,
lib/jetpants/topology.rb,
lib/jetpants/db/client.rb,
lib/jetpants/db/server.rb,
lib/jetpants/db/privileges.rb,
lib/jetpants/db/replication.rb,
lib/jetpants/db/import_export.rb

Overview

Namespace for the Jetpants toolkit.

Defined Under Namespace

Modules: CallbackHandler Classes: Callback, CallbackAbortError, DB, Host, Pool, Shard, Table, Topology

Class Attribute Summary collapse

Class Method Summary collapse

Class Attribute Details

.topology ⇒ Object (readonly)

A singleton Jetpants::Topology object is accessible from the global Jetpants module namespace.



50
51
52
 
# File 'lib/jetpants.rb', line 50

def topology
  @topology
end

Class Method Details

.app_credentials ⇒ Object

Returns a hash containing :user => username string, :pass => password string for the MySQL application user, as found in Jetpants’ configuration. Plugins may freely override this if there’s a better way to obtain this password – for example, if you already distribute an application configuration or credentials file to all of your servers.



62
63
64
 
# File 'lib/jetpants.rb', line 62

def app_credentials
  {user: @config['mysql_app_user'], pass: @config['mysql_app_password']}
end

.method_missing(name, *args, &block) ⇒ Object

Proxy missing top-level Jetpants methods to the configuration hash, or failing that, to the Topology singleton.



78
79
80
81
82
83
84
85
86
87
88
89
 
# File 'lib/jetpants.rb', line 78

def method_missing(name, *args, &block)
  if @config.has_key? name.to_s
    @config[name.to_s]
  elsif name.to_s[-1] == '=' && @config.has_key?(name.to_s[0..-2])
    var = name.to_s[0..-2]
    @config[var] = args[0]
  elsif @topology.respond_to? name
    @topology.send name, *args, &block
  else
    super
  end
end

.plugin_enabled?(plugin_name) ⇒ Boolean

Returns true if the specified plugin is enabled, false otherwise.

Returns:

  • (Boolean) 


53
54
55
 
# File 'lib/jetpants.rb', line 53

def plugin_enabled?(plugin_name)
  !!@config['plugins'][plugin_name]
end

.replication_credentials ⇒ Object

Returns a hash containing :user => username string, :pass => password string for the MySQL replication user, as found in Jetpants’ configuration. Plugins may freely override this if there’s a better way to obtain this password – for example, by parsing master.info on a specific slave in your topology. SEE ALSO: DB#replication_credentials, which only falls back to the global version when needed.



72
73
74
 
# File 'lib/jetpants.rb', line 72

def replication_credentials
  {user: @config['mysql_repl_user'], pass: @config['mysql_repl_password']}
end

.respond_to?(name, include_private = false) ⇒ Boolean

Returns:

  • (Boolean) 


91
92
93
 
# File 'lib/jetpants.rb', line 91

def respond_to?(name, include_private=false)
  super || @config[name] || @topology.respond_to?(name)
end