Class: Chef::Resource::Notification

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

Instance Attribute Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#actionObject

Returns the value of attribute action

Returns:

  • (Object)

    the current value of action



34
35
36
# File 'lib/chef/resource.rb', line 34

def action
  @action
end

#notifying_resourceObject

Returns the value of attribute notifying_resource

Returns:

  • (Object)

    the current value of notifying_resource



34
35
36
# File 'lib/chef/resource.rb', line 34

def notifying_resource
  @notifying_resource
end

#resourceObject

Returns the value of attribute resource

Returns:

  • (Object)

    the current value of resource



34
35
36
# File 'lib/chef/resource.rb', line 34

def resource
  @resource
end

Instance Method Details

#duplicates?(other_notification) ⇒ Boolean

Returns:

  • (Boolean)


36
37
38
39
40
41
42
43
# File 'lib/chef/resource.rb', line 36

def duplicates?(other_notification)
  unless other_notification.respond_to?(:resource) && other_notification.respond_to?(:action)
    msg = "only duck-types of Chef::Resource::Notification can be checked for duplication "\
          "you gave #{other_notification.inspect}"
    raise ArgumentError, msg
  end
  other_notification.resource == resource && other_notification.action == action
end

#fix_notifier_reference(resource_collection) ⇒ Object

This will look up the notifying_resource if it is not a Resource Object. It will complain if it finds multiple resources, can’t find a resource, or gets invalid syntax.



90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
# File 'lib/chef/resource.rb', line 90

def fix_notifier_reference(resource_collection)
  matching_notifier = resource_collection.find(notifying_resource)
  if Array(matching_notifier).size > 1
    msg = "Notification #{self} from #{notifying_resource} was created with a reference to multiple notifying "\
    "resources, but can only originate from one resource.  Destination resource was defined "\
    "on #{resource.source_line}"
    raise Chef::Exceptions::InvalidResourceReference, msg
  end
  self.notifying_resource = matching_notifier

rescue Chef::Exceptions::ResourceNotFound => e
  err = Chef::Exceptions::ResourceNotFound.new(<<-FAIL)
Resource #{resource} is configured to receive notifications from #{notifying_resource} with action #{action}, \
but #{notifying_resource} cannot be found in the resource collection. #{resource} is defined in \
#{resource.source_line}
FAIL
  err.set_backtrace(e.backtrace)
  raise err
rescue Chef::Exceptions::InvalidResourceSpecification => e
    err = Chef::Exceptions::InvalidResourceSpecification.new(<<-F)
Resource #{resource} is configured to receive notifications from  #{notifying_resource} with action #{action}, \
but #{notifying_resource.inspect} is not valid syntax to look up a resource in the resource collection. Notification \
is defined near #{resource.source_line}
F
    err.set_backtrace(e.backtrace)
  raise err
end

#fix_resource_reference(resource_collection) ⇒ Object

This will look up the resource if it is not a Resource Object. It will complain if it finds multiple resources, can’t find a resource, or gets invalid syntax.



61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
# File 'lib/chef/resource.rb', line 61

def fix_resource_reference(resource_collection)
  matching_resource = resource_collection.find(resource)
  if Array(matching_resource).size > 1
    msg = "Notification #{self} from #{notifying_resource} was created with a reference to multiple resources, "\
    "but can only notify one resource. Notifying resource was defined on #{notifying_resource.source_line}"
    raise Chef::Exceptions::InvalidResourceReference, msg
  end
  self.resource = matching_resource

rescue Chef::Exceptions::ResourceNotFound => e
  err = Chef::Exceptions::ResourceNotFound.new(<<-FAIL)
resource #{notifying_resource} is configured to notify resource #{resource} with action #{action}, \
but #{resource} cannot be found in the resource collection. #{notifying_resource} is defined in \
#{notifying_resource.source_line}
FAIL
  err.set_backtrace(e.backtrace)
  raise err
rescue Chef::Exceptions::InvalidResourceSpecification => e
    err = Chef::Exceptions::InvalidResourceSpecification.new(<<-F)
Resource #{notifying_resource} is configured to notify resource #{resource} with action #{action}, \
but #{resource.inspect} is not valid syntax to look up a resource in the resource collection. Notification \
is defined near #{notifying_resource.source_line}
F
    err.set_backtrace(e.backtrace)
  raise err
end

#resolve_resource_reference(resource_collection) ⇒ Object

If resource and/or notifying_resource is not a resource object, this will look them up in the resource collection and fix the references from strings to actual Resource objects.



47
48
49
50
51
52
53
54
55
56
57
# File 'lib/chef/resource.rb', line 47

def resolve_resource_reference(resource_collection)
  return resource if resource.kind_of?(Chef::Resource) && notifying_resource.kind_of?(Chef::Resource)

  if not(resource.kind_of?(Chef::Resource))
    fix_resource_reference(resource_collection)
  end

  if not(notifying_resource.kind_of?(Chef::Resource))
    fix_notifier_reference(resource_collection)
  end
end