Class: Formatron::AWS

Inherits:
Object
  • Object
show all
Defined in:
lib/formatron/aws.rb

Overview

shared AWS clients rubocop:disable Metrics/ClassLength

Constant Summary collapse

REGIONS = 
{
  'us-east-1' => {
    ami: 'ami-ff02509a'
  },
  'us-west-2' => {
    ami: 'ami-8ee605bd'
  },
  'us-west-1' => {
    ami: 'ami-198a495d'
  },
  'eu-west-1' => {
    ami: 'ami-37360a40'
  },
  'eu-central-1' => {
    ami: 'ami-46272b5b'
  },
  'ap-southeast-1' => {
    ami: 'ami-42170410'
  },
  'ap-southeast-2' => {
    ami: 'ami-6d6c2657'
  },
  'ap-northeast-1' => {
    ami: 'ami-402e4c40'
  },
  'sa-east-1' => {
    ami: 'ami-1f4bda02'
  }
}
CAPABILITIES = 
%w(CAPABILITY_IAM)
STACK_READY_STATES = 
%w(
  CREATE_COMPLETE
  UPDATE_COMPLETE
  UPDATE_ROLLBACK_COMPLETE
  ROLLBACK_COMPLETE
)

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(credentials:) ⇒ AWS

Returns a new instance of AWS.



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# File 'lib/formatron/aws.rb', line 48

def initialize(credentials:)
  @credentials = JSON.parse(File.read(credentials))
  @region = @credentials['region']
  _create_aws_credentials
  _create_s3_client
  _create_cloudformation_client
  _create_route53_client
end

Instance Attribute Details

#region ⇒ Object (readonly)

Returns the value of attribute region.



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# File 'lib/formatron/aws.rb', line 7

def region
  @region
end

Instance Method Details

#delete_file(bucket:, key:) ⇒ Object 



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# File 'lib/formatron/aws.rb', line 74

def delete_file(bucket:, key:)
  @s3_client.delete_object(
    bucket: bucket,
    key: key
  )
end

#delete_stack(stack_name:) ⇒ Object 



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# File 'lib/formatron/aws.rb', line 140

def delete_stack(stack_name:)
  @cloudformation_client.delete_stack(
    stack_name: stack_name
  )
end

#deploy_stack(stack_name:, template_url:, parameters:) ⇒ Object

rubocop:disable Metrics/MethodLength



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# File 'lib/formatron/aws.rb', line 97

def deploy_stack(stack_name:, template_url:, parameters:)
  aws_parameters = parameters.map do |key, value|
    {
      parameter_key: key,
      parameter_value: value,
      use_previous_value: false
    }
  end
  @cloudformation_client.create_stack(
    stack_name: stack_name,
    template_url: template_url,
    capabilities: CAPABILITIES,
    on_failure: 'DO_NOTHING',
    parameters: aws_parameters
  )
rescue Aws::CloudFormation::Errors::AlreadyExistsException
  _update_stack(
    stack_name: stack_name,
    template_url: template_url,
    parameters: aws_parameters
  )
end

#download_file(bucket:, key:, path:) ⇒ Object 



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# File 'lib/formatron/aws.rb', line 81

def download_file(bucket:, key:, path:)
  @s3_client.get_object(
    bucket: bucket,
    key: key,
    response_target: path
  )
end

#file_exists?(bucket:, key:) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/formatron/aws.rb', line 67

def file_exists?(bucket:, key:)
  @s3_client.list_objects(
    bucket: bucket,
    prefix: key
  ).contents.length > 0
end

#get_file(bucket:, key:) ⇒ Object 



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# File 'lib/formatron/aws.rb', line 89

def get_file(bucket:, key:)
  @s3_client.get_object(
    bucket: bucket,
    key: key
  ).body.read
end

#hosted_zone_name(hosted_zone_id) ⇒ Object

rubocop:enable Metrics/MethodLength



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# File 'lib/formatron/aws.rb', line 121

def hosted_zone_name(hosted_zone_id)
  @route53_client.get_hosted_zone(
    id: hosted_zone_id
  ).hosted_zone.name.chomp '.'
end

#stack_outputs(stack_name:) ⇒ Object 



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# File 'lib/formatron/aws.rb', line 146

def stack_outputs(stack_name:)
  description = @cloudformation_client.describe_stacks(
    stack_name: stack_name
  ).stacks[0]
  status = description.stack_status
  fail "CloudFormation stack, #{stack_name}, " \
       "is not ready: #{status}" unless STACK_READY_STATES.include? status
  description.outputs.each_with_object({}) do |output, outputs|
    outputs[output.output_key] = output.output_value
  end
end

#stack_ready!(stack_name:) ⇒ Object 



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# File 'lib/formatron/aws.rb', line 158

def stack_ready!(stack_name:)
  status = @cloudformation_client.describe_stacks(
    stack_name: stack_name
  ).stacks[0].stack_status
  fail "CloudFormation stack, #{stack_name}, " \
       "is not ready: #{status}" unless STACK_READY_STATES.include? status
end

#upload_file(kms_key:, bucket:, key:, content:) ⇒ Object 



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# File 'lib/formatron/aws.rb', line 57

def upload_file(kms_key:, bucket:, key:, content:)
  @s3_client.put_object(
    bucket: bucket,
    key: key,
    body: content,
    server_side_encryption: 'aws:kms',
    ssekms_key_id: kms_key
  )
end