Class: Jets::Cfn::Builders::ApiGatewayBuilder

Inherits:
Object
  • Object
show all
Extended by:
Memoist
Includes:
AwsServices, Interface
Defined in:
lib/jets/cfn/builders/api_gateway_builder.rb

Constant Summary collapse

PAGE_LIMIT =

Adds route related Resources and Outputs Delegates to ApiResourcesBuilder

Integer(ENV['JETS_AWS_OUTPUTS_LIMIT'] || 200)

Instance Method Summary collapse

Methods included from AwsServices

#apigateway, #aws_lambda, #cfn, #dynamodb, #logs, #s3, #s3_resource, #sns, #sqs, #sts

Methods included from AwsServices::StackStatus

#lookup, #stack_exists?, #stack_in_progress?

Methods included from AwsServices::GlobalMemoist

included

Methods included from Interface

#add_description, #add_output, #add_outputs, #add_parameter, #add_parameters, #add_resource, #add_resources, #add_template_resource, #build, #post_process_template, #template, #text

Constructor Details

#initialize(options = {}) ⇒ ApiGatewayBuilder 



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# File 'lib/jets/cfn/builders/api_gateway_builder.rb', line 7

def initialize(options={})
  @options = options
  @template = ActiveSupport::HashWithIndifferentAccess.new(Resources: {})
end

Instance Method Details

#add_custom_domain ⇒ Object 



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# File 'lib/jets/cfn/builders/api_gateway_builder.rb', line 40

def add_custom_domain
  return unless Jets.custom_domain?
  add_domain_name
  add_route53_dns if Jets.config.domain.route53
end

#add_domain_name ⇒ Object 



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# File 'lib/jets/cfn/builders/api_gateway_builder.rb', line 46

def add_domain_name
  add_outputs(create_domain_name)
end

#add_gateway_rest_api ⇒ Object

If the are routes in config/routes.rb add Gateway API in parent stack



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# File 'lib/jets/cfn/builders/api_gateway_builder.rb', line 30

def add_gateway_rest_api
  rest_api = Jets::Resource::ApiGateway::RestApi.new
  add_resource(rest_api)
  add_outputs(rest_api.outputs)

  deployment = Jets::Resource::ApiGateway::Deployment.new
  outputs = deployment.outputs(true)
  add_output("RestApiUrl", Value: outputs["RestApiUrl"])
end

#add_gateway_routes ⇒ Object 



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# File 'lib/jets/cfn/builders/api_gateway_builder.rb', line 114

def add_gateway_routes
  # Reject homepage. Otherwise we have 200 - 1 resources on the first page.
  # There's a next call in ApiResources.add_gateway_resources to skip the homepage.
  all_paths = Jets::Router.all_paths.reject { |p| p == '' }
  all_paths.each_slice(PAGE_LIMIT).each_with_index do |paths, i|
    ApiResourcesBuilder.new(@options, paths, i+1).build
  end
end

#add_route53_dns ⇒ Object 



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# File 'lib/jets/cfn/builders/api_gateway_builder.rb', line 50

def add_route53_dns
  dns = Jets::Resource::Route53::RecordSet.new
  if !existing_domain_name?(dns.domain_name) or existing_dns_record_on_stack? 
    add_resource(dns)
    add_outputs(dns.outputs)
  end
end

#api_gateway_physical_resource_id ⇒ Object 



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# File 'lib/jets/cfn/builders/api_gateway_builder.rb', line 99

def api_gateway_physical_resource_id
  cfn.describe_stack_resource({
    stack_name: Jets::Naming.parent_stack_name,
    logical_resource_id: "ApiGateway"
  })
  .stack_resource_detail
  .physical_resource_id
rescue
  return nil
end

#compose ⇒ Object

compose is an interface method



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# File 'lib/jets/cfn/builders/api_gateway_builder.rb', line 13

def compose
  add_gateway_routes # "child template": build before add_gateway_rest_api. RestApi logical id and change detection is dependent on it.
  add_gateway_rest_api # changes parent template
  add_custom_domain    # changes parent template
end

#create_domain_name ⇒ Object 



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# File 'lib/jets/cfn/builders/api_gateway_builder.rb', line 58

def create_domain_name()
  resource = Jets::Resource::ApiGateway::DomainName.new
  
  return {
    "DomainName" => resource.domain_name
  } if (existing_domain_name?(resource) and !existing_domain_name_on_stack?)
  
  add_resource(resource)
  return resource.outputs
end

#existing_dns_record_on_stack? ⇒ Boolean 



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# File 'lib/jets/cfn/builders/api_gateway_builder.rb', line 89

def existing_dns_record_on_stack?
  cfn.describe_stack_resource({
    stack_name: api_gateway_physical_resource_id,
    logical_resource_id: "DnsRecord"
  })
  return true
rescue
  return false
end

#existing_domain_name?(resource) ⇒ Boolean 



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# File 'lib/jets/cfn/builders/api_gateway_builder.rb', line 69

def existing_domain_name?(resource)
  apigateway.get_domain_name({
    domain_name: resource.domain_name
  })
  return true
rescue
  return false
end

#existing_domain_name_on_stack? ⇒ Boolean 



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# File 'lib/jets/cfn/builders/api_gateway_builder.rb', line 79

def existing_domain_name_on_stack?
  cfn.describe_stack_resource({
    stack_name: api_gateway_physical_resource_id,
    logical_resource_id: "DomainName"
  })
  return true
rescue
  return false
end

#template_path ⇒ Object

template_path is an interface method



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# File 'lib/jets/cfn/builders/api_gateway_builder.rb', line 20

def template_path
  Jets::Naming.api_gateway_template_path
end

#write ⇒ Object

do not bother writing a template if routes are empty



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# File 'lib/jets/cfn/builders/api_gateway_builder.rb', line 25

def write
  super unless Jets::Router.routes.empty?
end