Class: Chef::ProviderResolver

Inherits:
Object
  • Object
show all
Defined in:
lib/chef/provider_resolver.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(node, resource, action) ⇒ ProviderResolver

Returns a new instance of ProviderResolver.



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# File 'lib/chef/provider_resolver.rb', line 29

def initialize(node, resource, action)
  @node = node
  @resource = resource
  @action = action
end

Instance Attribute Details

#action ⇒ Object (readonly)

Returns the value of attribute action.



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# File 'lib/chef/provider_resolver.rb', line 27

def action
  @action
end

#node ⇒ Object (readonly)

Returns the value of attribute node.



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# File 'lib/chef/provider_resolver.rb', line 25

def node
  @node
end

#resource ⇒ Object (readonly)

Returns the value of attribute resource.



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# File 'lib/chef/provider_resolver.rb', line 26

def resource
  @resource
end

Instance Method Details

#enabled_handlers ⇒ Object

this cut looks at if the provider can handle the resource type on the node



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# File 'lib/chef/provider_resolver.rb', line 47

def enabled_handlers
  @enabled_handlers ||=
    providers.select do |klass|
      klass.provides?(node, resource)
    end.sort {|a,b| a.to_s <=> b.to_s }
end

#providers ⇒ Object

return a deterministically sorted list of Chef::Provider subclasses



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# File 'lib/chef/provider_resolver.rb', line 36

def providers
  @providers ||= Chef::Provider.descendants
end

#resolve ⇒ Object 



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# File 'lib/chef/provider_resolver.rb', line 40

def resolve
  maybe_explicit_provider(resource) ||
    maybe_dynamic_provider_resolution(resource, action) ||
    maybe_chef_platform_lookup(resource)
end

#supported_handlers ⇒ Object

this cut looks at if the provider can handle the specific resource and action



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# File 'lib/chef/provider_resolver.rb', line 55

def supported_handlers
  @supported_handlers ||=
    enabled_handlers.select do |klass|
      klass.supports?(resource, action)
    end
end