Module: Enscalator::Core::CfResources

Included in:
RichTemplateDSL
Defined in:
lib/enscalator/core/cf_resources.rb

Overview

Resources for cloudformation template dsl

Instance Method Summary collapse

Instance Method Details

#iam_instance_profile_with_full_access(role_name, *services) ⇒ String

IAM instance profile with full access policies to passed services

Parameters:

  • role_name (String) —

    iam role name

  • services (Array<String>) —

    a list of aws service name

Returns:

  • (String) —

    iam instance profile name



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# File 'lib/enscalator/core/cf_resources.rb', line 130

def iam_instance_profile_with_full_access(role_name, *services)
  resource "#{role_name}Role",
           Type: 'AWS::IAM::Role',
           Properties: {
             AssumeRolePolicyDocument: {
               Statement: [
                 {
                   Effect: 'Allow',
                   Principal: {
                     Service: ['ec2.amazonaws.com']
                   },
                   Action: ['sts:AssumeRole']
                 }
               ]
             },
             Path: '/',
             Policies: [
               {
                 PolicyName: "#{role_name}Policy",
                 PolicyDocument: {
                   Statement: services.map do |s|
                     {
                       Effect: 'Allow',
                       Action: "#{s}:*",
                       Resource: '*'
                     }
                   end
                 }
               }
             ]
           }

  resource "#{role_name}InstanceProfile",
           Type: 'AWS::IAM::InstanceProfile',
           Properties: {
             Path: '/',
             Roles: [ref("#{role_name}Role")]
           }

  ref("#{role_name}InstanceProfile")
end

#instance_vpc(name, image_id, subnet, security_groups, depends_on: [], properties: {}) ⇒ Object

Create ec2 instance in given vpc

Parameters:

  • name (String) —

    instance name

  • image_id (String) —

    instance ami_id

  • subnet (String) —

    instance subnet id

  • security_groups (String) —

    instance security_groups (string of Security Groups IDs)

  • depends_on (Array) (defaults to: []) —

    resources necessary to be create prior to this instance

  • properties (Hash) (defaults to: {}) —

    other properties



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# File 'lib/enscalator/core/cf_resources.rb', line 180

def instance_vpc(name, image_id, subnet, security_groups, depends_on: [], properties: {})
  fail "VPC instance #{name} can not contain non VPC SecurityGroups" if properties.include?(:SecurityGroups)
  if properties.include?(:NetworkInterfaces)
    fail "VPC instance #{name} can not contain NetworkInterfaces and subnet or security_groups"
  end
  properties[:ImageId] = image_id
  properties[:SubnetId] = subnet
  properties[:SecurityGroupIds] = security_groups
  if properties[:Tags] && !properties[:Tags].any? { |x| x[:Key] == 'Name' }
    properties[:Tags] << { Key: 'Name', Value: join('-', aws_stack_name, name) }
  end
  options = {
    Type: 'AWS::EC2::Instance',
    Properties: properties
  }

  options[:DependsOn] = depends_on unless depends_on.empty?
  resource name, options
  name
end

#instance_with_network(name, image_id, network_interfaces, properties: {}) ⇒ Object

Create ec2 instance with attached to it network interface

Parameters:

  • name (String) —

    instance name

  • image_id (String) —

    instance ami_id

  • network_interfaces (String) —

    network interfaces

  • properties (Hash) (defaults to: {}) —

    other properties



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# File 'lib/enscalator/core/cf_resources.rb', line 207

def instance_with_network(name, image_id, network_interfaces, properties: {})
  if ([:SubnetId, :SecurityGroups, :SecurityGroupIds] & properties).any?
    fail "Instance with NetworkInterfaces #{name} can not contain instance subnet or security_groups"
  end
  properties[:ImageId] = image_id
  properties[:NetworkInterfaces] = network_interfaces
  if properties[:Tags] && !properties[:Tags].any? { |x| x[:Key] == 'Name' }
    properties[:Tags] << { Key: 'Name', Value: join('-', aws_stack_name, name) }
  end
  options = {
    Type: 'AWS::EC2::Instance',
    Properties: properties
  }
  resource name, options
  name
end

#security_group(name, description, security_group_egress: [], security_group_ingress: [], depends_on: [], tags: {}) ⇒ Object

Security group

Parameters:

  • name (String) —

    of the security group

  • description (String) —

    of security group

  • security_group_egress (Array) (defaults to: []) —

    list of outbound rules

  • security_group_ingress (Array) (defaults to: []) —

    list of inbound rules

  • depends_on (Array) (defaults to: []) —

    list of resources this vpc needs

  • tags (Hash) (defaults to: {}) —

    tags



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# File 'lib/enscalator/core/cf_resources.rb', line 67

def security_group(name,
                   description,
                   security_group_egress: [],
                   security_group_ingress: [],
                   depends_on: [],
                   tags: {})
  properties = {
    GroupDescription: description
  }
  properties[:SecurityGroupEgress] = security_group_egress unless security_group_egress.empty?
  properties[:SecurityGroupIngress] = security_group_ingress unless security_group_ingress.empty?
  unless tags.include?('Name')
    tags['Name'] = join('-', aws_stack_name, name)
  end
  properties[:Tags] = tags_to_properties(tags)
  options = {
    Type: 'AWS::EC2::SecurityGroup',
    Properties: properties
  }
  options[:DependsOn] = depends_on unless depends_on.empty?
  resource name, options
  name
end

#security_group_vpc(name, description, vpc, security_group_egress: [], security_group_ingress: [], depends_on: [], tags: {}) ⇒ Object

VPC Security group

Parameters:

  • name (String) —

    of the security group

  • description (String) —

    of security group

  • security_group_egress (Array) (defaults to: []) —

    list of outbound rules

  • security_group_ingress (Array) (defaults to: []) —

    list of inbound rules

  • depends_on (Array) (defaults to: []) —

    list of resources this vpc needs

  • tags (Hash) (defaults to: {}) —

    tags



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# File 'lib/enscalator/core/cf_resources.rb', line 99

def security_group_vpc(name,
                       description,
                       vpc,
                       security_group_egress: [],
                       security_group_ingress: [],
                       depends_on: [],
                       tags: {})
  properties = {
    VpcId: vpc,
    GroupDescription: description
  }
  properties[:SecurityGroupEgress] = security_group_egress unless security_group_egress.empty?
  properties[:SecurityGroupIngress] = security_group_ingress unless security_group_ingress.empty?
  unless tags.include?('Name')
    tags['Name'] = join('-', aws_stack_name, name)
  end
  properties[:Tags] = tags_to_properties(tags)
  options = {
    Type: 'AWS::EC2::SecurityGroup',
    Properties: properties
  }
  options[:DependsOn] = depends_on unless depends_on.empty?
  resource name, options
  name
end

#subnet(name, vpc, cidr, availability_zone: '', depends_on: [], tags: {}) ⇒ Object

Subnet resource

Parameters:

  • name (String) —

    of the vpc name

  • cidr (String) —

    ip address block in CIDR notation (Classless Inter-Domain Routing)

  • availability_zone (String) (defaults to: '') —

    where subnet gets created

  • depends_on (Array) (defaults to: []) —

    list of resources this vpc needs

  • tags (Hash) (defaults to: {}) —

    tags



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# File 'lib/enscalator/core/cf_resources.rb', line 39

def subnet(name, vpc, cidr, availability_zone: '', depends_on: [], tags: {})
  properties = {
    VpcId: vpc,
    CidrBlock: cidr
  }
  properties[:AvailabilityZone] = availability_zone unless availability_zone.empty?
  unless tags.include?('Name')
    tags['Name'] = join('-', aws_stack_name, name)
  end
  properties[:Tags] = tags_to_properties(tags)

  options = {
    Type: 'AWS::EC2::Subnet',
    Properties: properties
  }
  options[:DependsOn] = depends_on unless depends_on.empty?
  resource name, options
  name
end

#vpc(name, cidr, enable_dns_support: nil, enable_dns_hostnames: nil, depends_on: [], tags: {}) ⇒ Object

VPC resource

Parameters:

  • name (String) —

    of the vpc name

  • cidr (String) —

    ip address block in CIDR notation (Classless Inter-Domain Routing)

  • enable_dns_support (String) (defaults to: nil) —

    enable dns support

  • enable_dns_hostnames (String) (defaults to: nil) —

    enable dns hostname

  • depends_on (Array) (defaults to: []) —

    list of resources this vpc needs

  • tags (Hash) (defaults to: {}) —

    tags



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# File 'lib/enscalator/core/cf_resources.rb', line 13

def vpc(name, cidr, enable_dns_support: nil, enable_dns_hostnames: nil, depends_on: [], tags: {})
  properties = {
    CidrBlock: cidr
  }
  properties[:EnableDnsSupport] = enable_dns_support unless enable_dns_support.nil?
  properties[:EnableDnsHostnames] = enable_dns_hostnames unless enable_dns_hostnames.nil?
  unless tags.include?('Name')
    tags['Name'] = join('-', aws_stack_name, name)
  end
  properties[:Tags] = tags_to_properties(tags)
  options = {
    Type: 'AWS::EC2::VPC',
    Properties: properties
  }
  options[:DependsOn] = depends_on unless depends_on.empty?
  resource name, options
  name
end