Class: Jets::Cfn::Resource::Lambda::Permission

Inherits:
Base
  • Object
show all
Defined in:
lib/jets/cfn/resource/lambda/permission.rb

Instance Method Summary collapse

Methods inherited from Base

#attributes, #logical_id, #outputs, #parameters, #permission, #properties, #replacements, #replacer, #standarize, #template, truncate_id, #type

Methods included from Util::Camelize

#camelize

Constructor Details

#initialize(replacements, associated_resource, options = {}) ⇒ Permission

Returns a new instance of Permission.



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# File 'lib/jets/cfn/resource/lambda/permission.rb', line 6

def initialize(replacements, associated_resource, options={})
  @replacements = replacements
  @associated_resource = associated_resource
  # allow override for Jets::Cfn::Resource::Lambda::Function::Controller permission
  @principal = options[:Principal]
  @source_arn = options[:SourceArn]
end

Instance Method Details

#definition ⇒ Object 



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# File 'lib/jets/cfn/resource/lambda/permission.rb', line 14

def definition
  logical_id = permission_logical_id

  definition = {
    logical_id => {
      Type: "AWS::Lambda::Permission",
      Properties: {
        FunctionName: "!Ref {namespace}LambdaFunction",
        Action: "lambda:InvokeFunction",
        Principal: principal
      }
    }
  }

  # From AWS docs: https://amzn.to/2N0QXQL
  # source_arn is "not supported by all event sources"
  definition[logical_id][:Properties][:SourceArn] = source_arn if source_arn

  definition
end

#permission_logical_id ⇒ Object 



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# File 'lib/jets/cfn/resource/lambda/permission.rb', line 35

def permission_logical_id
  logical_id = "{namespace}Permission"
  md = @associated_resource.logical_id.match(/(\d+)$/)
  counter = md[1] if md
  [logical_id, counter].compact.join('')
end

#principal ⇒ Object

Auto-detect principal from the associated resources.



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# File 'lib/jets/cfn/resource/lambda/permission.rb', line 43

def principal
  @principal || replacer.principal_map(@associated_resource.type)
end

#source_arn ⇒ Object 



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# File 'lib/jets/cfn/resource/lambda/permission.rb', line 47

def source_arn
  @source_arn || replacer.source_arn_map(@associated_resource.type)
end