Class: BrohamNode

Inherits:
RightAws::ActiveSdb::Base
  • Object
show all
Defined in:
lib/broham/cluster.rb

Overview

This actually reaches into the settings hash and supplies

(it’s written like this so that chef

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(settings) ⇒ BrohamNode

Settings hash must contain

  • ‘aws’

    a hash with keys ‘access_key’ and ‘secret_access_key’ holding your AWS credentsials

  • ‘cluster_name’

    name of the cluster

  • ‘cluster_role’

    role within that cluster

Method will set values for

  • ‘cluster_role_index’

  • ‘node_name’



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# File 'lib/broham/cluster.rb', line 26

def initialize settings
  self.settings = settings
end

Instance Attribute Details

#settings ⇒ Object

Returns the value of attribute settings.



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# File 'lib/broham/cluster.rb', line 8

def settings
  @settings
end

Class Method Details

.set_cluster_info!(settings) ⇒ Object 



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# File 'lib/broham/cluster.rb', line 10

def self.set_cluster_info! settings
  node = new(settings)
  node.set_cluster_info!
  node.settings
end

Instance Method Details

#broham_attr(attr) ⇒ Object

retrieve a simple scalar value from the broham info



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# File 'lib/broham/cluster.rb', line 35

def broham_attr attr
  [ broham_info[attr] ].flatten.first
end

#broham_info ⇒ Object

Return cached copy of the broham registration, if any



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# File 'lib/broham/cluster.rb', line 41

def broham_info
  return @broham_info if @broham_info
  establish_connection
  @broham_info ||= Broham.register_as_next("#{settings["cluster_name"]}-#{settings["cluster_role"]}")
end

#establish_connection ⇒ Object 



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# File 'lib/broham/cluster.rb', line 47

def establish_connection
  raise "Need to supply an AWS credentials hash with keys 'access_key' and 'secret_access_key'" if settings["aws"].blank?
  Broham.establish_connection(:access_key => settings["aws"]["access_key"], :secret_access_key => settings["aws"]["secret_access_key"])
end

#set_cluster_info! ⇒ Object 



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# File 'lib/broham/cluster.rb', line 30

def set_cluster_info!
  settings['cluster_role_index'] ||= broham_attr('idx')
end