Class: Mccloud::Provider::Core::Provider

Inherits:
Object
  • Object
show all
Defined in:
lib/mccloud/provider/core/provider.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(name, options, env) ⇒ Provider

Returns a new instance of Provider.



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# File 'lib/mccloud/provider/core/provider.rb', line 10

def initialize(name,options,env)
  @env=env
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(m, *args, &block) ⇒ Object 



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# File 'lib/mccloud/provider/core/provider.rb', line 101

def method_missing(m, *args, &block)
 env.logger.info "There's no method #{m} defined for provider #{@name}-- ignoring it"
end

Instance Attribute Details

#env ⇒ Object (readonly)

Returns the value of attribute env.



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# File 'lib/mccloud/provider/core/provider.rb', line 6

def env
  @env
end

#namespace ⇒ Object

Returns the value of attribute namespace.



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# File 'lib/mccloud/provider/core/provider.rb', line 8

def namespace
  @namespace
end

Instance Method Details

#check_gem_availability(gems) ⇒ Object

TODO this loading of gem , needs to be moved else where This provider should only check what it needs



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# File 'lib/mccloud/provider/core/provider.rb', line 83

def check_gem_availability(gems)

  gems.each do |gemname|
    availability_gem=false
    begin
      availability_gem=true unless Gem::Specification::find_by_name("#{gemname}").nil?
    rescue Gem::LoadError
      availability_gem=false
    rescue
      availability_gem=Gem.available?("#{gemname}")
    end
    unless availability_gem
      abort "The #{gemname} gem is not installed and is required by the #{@name.to_sym} provider"
      exit
    end
  end
end

#filter ⇒ Object 



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# File 'lib/mccloud/provider/core/provider.rb', line 62

def filter
  if @namespace.nil? || @namespace==""
    return ""
  else
    return "#{@namespace}-"
  end
end

#get_component(type, env) ⇒ Object 



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# File 'lib/mccloud/provider/core/provider.rb', line 14

def get_component(type,env)
  real_component=nil
  begin
    # Now that we know the actual provider, we can check if the provider has this type of component
    require_path='mccloud/provider/'+@flavor.to_s.downcase+"/"+type.to_s.downcase
    require require_path
    # Now we can create the real component

    env.logger.debug("provider #{@flavor} about to create component of type #{type}")

    real_component=Object.const_get("Mccloud").const_get("Provider").const_get(@flavor.to_s.capitalize).const_get(type.to_s.capitalize).new(env)

  rescue Error => e
    env.ui.error "Error getting component - #{e}"
  end
  return real_component
end

#hosts ⇒ Object 



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# File 'lib/mccloud/provider/core/provider.rb', line 70

def hosts
  hostentries = Hash.new
  self.vms.each do |name,vm|
   hostentries[name] = Hash.new
   hostentries[name]['public_ip_address'] = vm.public_ip_address
   hostentries[name]['private_ip_address'] = vm.private_ip_address
  end
  return hostentries
end

#on_selected_components(type, selection = nil) ⇒ Object 



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# File 'lib/mccloud/provider/core/provider.rb', line 32

def on_selected_components(type,selection=nil)
  unless self.instance_variables.collect{|v| v.to_s}.include?("@vms")
    env.ui.info "There are no #{type}s defined for provider #{@name}"
    # Nothing to do here
    return
  end

  components=self.instance_variable_get("@#{type}s")

  unless components.nil?

  if selection.nil? || selection == "all"
    components.each do |name,component|
      if component.auto_selected?
        yield name,component
      else
        env.ui.info "[#{name}] Skipping because it has autoselection off"
      end
    end
  else # a specific component
    if components.has_key?(selection)
      yield name,components[selection]
    end
  end

  else
        env.ui.info "[#{name}] Has no components of type #{type}"
  end
end