Class: Terrafying::Components::DynamicSet
- Inherits:
-
Terrafying::Context
- Object
- Terrafying::Context
- Terrafying::Components::DynamicSet
- Includes:
- Usable
- Defined in:
- lib/terrafying/components/dynamicset.rb
Instance Attribute Summary collapse
-
#asg ⇒ Object
readonly
Returns the value of attribute asg.
-
#name ⇒ Object
readonly
Returns the value of attribute name.
-
#stack ⇒ Object
readonly
Returns the value of attribute stack.
Class Method Summary collapse
Instance Method Summary collapse
- #attach_load_balancer(load_balancer) ⇒ Object
- #autoscale_on_load_balancer(load_balancer, target_value:, disable_scale_in:) ⇒ Object
- #create_in(vpc, name, options = {}) ⇒ Object
- #default_egress_rule(ident, security_group) ⇒ Object
- #find_in(vpc, name) ⇒ Object
- #generate_template(health_check, instances, launch_config, subnets, tags, rolling_update) ⇒ Object
-
#initialize ⇒ DynamicSet
constructor
A new instance of DynamicSet.
- #instances_by_tags(tags = {}) ⇒ Object
- #profile_from(profile) ⇒ Object
- #resource_name_from(profile) ⇒ Object
- #vpc_endpoint_egress_rules(ident, security_group, vpc, vpc_endpoints) ⇒ Object
Methods included from Usable
#egress_security_group, #ingress_security_group, #path_mtu_setup!, #pingable_by, #pingable_by_cidr, #security_group, #used_by, #used_by_cidr
Constructor Details
#initialize ⇒ DynamicSet
Returns a new instance of DynamicSet.
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# File 'lib/terrafying/components/dynamicset.rb', line 22 def initialize super end |
Instance Attribute Details
#asg ⇒ Object (readonly)
Returns the value of attribute asg.
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# File 'lib/terrafying/components/dynamicset.rb', line 10 def asg @asg end |
#name ⇒ Object (readonly)
Returns the value of attribute name.
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# File 'lib/terrafying/components/dynamicset.rb', line 10 def name @name end |
#stack ⇒ Object (readonly)
Returns the value of attribute stack.
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# File 'lib/terrafying/components/dynamicset.rb', line 10 def stack @stack end |
Class Method Details
.create_in(vpc, name, options = {}) ⇒ Object
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# File 'lib/terrafying/components/dynamicset.rb', line 14 def self.create_in(vpc, name, = {}) DynamicSet.new.create_in vpc, name, end |
.find_in(vpc, name) ⇒ Object
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# File 'lib/terrafying/components/dynamicset.rb', line 18 def self.find_in(vpc, name) DynamicSet.new.find_in vpc, name end |
Instance Method Details
#attach_load_balancer(load_balancer) ⇒ Object
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# File 'lib/terrafying/components/dynamicset.rb', line 164 def attach_load_balancer(load_balancer) load_balancer.targets.each.with_index do |target, i| resource :aws_autoscaling_attachment, "#{load_balancer.name}-#{@name}-#{i}".gsub(%r{^(\d)}, '_\1'), autoscaling_group_name: @asg, alb_target_group_arn: target.target_group end used_by(load_balancer) if load_balancer.application? end |
#autoscale_on_load_balancer(load_balancer, target_value:, disable_scale_in:) ⇒ Object
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# File 'lib/terrafying/components/dynamicset.rb', line 174 def autoscale_on_load_balancer(load_balancer, target_value:, disable_scale_in:) load_balancer.targets.each.with_index do |target, i| policy_ident = "#{load_balancer.name}-#{@name}-#{i}".gsub(%r{^(\d)}, '_\1') policy_name = "#{load_balancer.name}-#{@name}-#{i}" lb_arn = load_balancer.id.to_s.gsub(/id/, 'arn_suffix') tg_arn = target.target_group.to_s.gsub(/id/, 'arn_suffix') listener = "aws_lb_listener.#{target.listener.to_s.split('.')[1]}" = "aws_autoscaling_attachment.#{policy_ident}" resource :aws_autoscaling_policy, policy_ident, name: policy_name, autoscaling_group_name: @asg, policy_type: 'TargetTrackingScaling', target_tracking_configuration: { predefined_metric_specification: { predefined_metric_type: 'ALBRequestCountPerTarget', resource_label: "#{lb_arn}/#{tg_arn}" }, target_value: target_value, disable_scale_in: disable_scale_in }, depends_on: [listener, ] end end |
#create_in(vpc, name, options = {}) ⇒ Object
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# File 'lib/terrafying/components/dynamicset.rb', line 32 def create_in(vpc, name, = {}) = { public: false, eip: false, ami: aws.ami('base-image-fc-79994d1f', owners = ['477284023816']), instance_type: 't3a.micro', instances: { min: 1, max: 1, desired: 1, tags: {} }, ports: [], instance_profile: nil, security_groups: [], tags: {}, ssh_group: vpc.ssh_group, subnets: vpc.subnets.fetch(:private, []), depends_on: [], rolling_update: :simple, metadata_options: nil, vpc_endpoints_egress: [] }.merge() = [:metadata_options] ident = "#{tf_safe(vpc.name)}-#{name}" @name = ident @ports = enrich_ports([:ports]) @security_group = resource :aws_security_group, ident, name: "dynamicset-#{ident}", description: "Describe the ingress and egress of the service #{ident}", tags: [:tags], vpc_id: vpc.id vpc_endpoints_egress = [:vpc_endpoints_egress] if vpc_endpoints_egress.empty? default_egress_rule(ident, @security_group) else vpc_endpoint_egress_rules(ident, @security_group, vpc, vpc_endpoints_egress) end path_mtu_setup! launch_config = resource :aws_launch_configuration, ident, name_prefix: "#{ident}-", image_id: [:ami], instance_type: [:instance_type], user_data: [:user_data], iam_instance_profile: profile_from([:instance_profile]), associate_public_ip_address: [:public], root_block_device: { volume_type: 'gp2', volume_size: 32 }, security_groups: [ vpc.internal_ssh_security_group, @security_group ].push(*[:security_groups]), lifecycle: { create_before_destroy: true }, metadata_options: [:metadata_options], depends_on: resource_name_from([:instance_profile]) if [:instances][:track] instances = (Name: ident) if instances [:instances] = [:instances].merge(instances) end end if .key?(:health_check) raise 'Health check needs a type and grace_period' if ![:health_check].key?(:type) && ![:health_check].key?(:grace_period) else = { health_check: { type: 'EC2', grace_period: 0 } }.merge() end = { Name: ident, service_name: name }.merge([:tags]).merge([:instances].fetch(:tags, {})).map { |k, v| { Key: k, Value: v, PropagateAtLaunch: true } } resource :aws_cloudformation_stack, ident, name: ident, disable_rollback: true, template_body: generate_template( [:health_check], [:instances], launch_config, [:subnets].map(&:id), , [:rolling_update] ) @stack = "arn:aws:cloudformation:#{aws.region}:#{aws.account_id}:stack/#{ident}/*" @asg = output_of(:aws_cloudformation_stack, ident, 'outputs["AsgName"]') self end |
#default_egress_rule(ident, security_group) ⇒ Object
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# File 'lib/terrafying/components/dynamicset.rb', line 146 def default_egress_rule(ident, security_group) resource :aws_security_group_rule, "#{ident}-default-egress", security_group_id: security_group, type: 'egress', from_port: 0, to_port: 0, protocol: -1, cidr_blocks: ['0.0.0.0/0'] end |
#find_in(vpc, name) ⇒ Object
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# File 'lib/terrafying/components/dynamicset.rb', line 26 def find_in(vpc, name) @name = "#{vpc.name}-#{name}" self end |
#generate_template(health_check, instances, launch_config, subnets, tags, rolling_update) ⇒ Object
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# File 'lib/terrafying/components/dynamicset.rb', line 199 def generate_template(health_check, instances, launch_config, subnets, , rolling_update) template = { Resources: { AutoScalingGroup: { Type: 'AWS::AutoScaling::AutoScalingGroup', Properties: { Cooldown: '300', HealthCheckType: (health_check[:type]).to_s, HealthCheckGracePeriod: health_check[:grace_period], LaunchConfigurationName: launch_config.to_s, MetricsCollection: [ { Granularity: '1Minute', Metrics: %w[ GroupMinSize GroupMaxSize GroupDesiredCapacity GroupInServiceInstances GroupPendingInstances GroupStandbyInstances GroupTerminatingInstances GroupTotalInstances ] } ], MaxSize: instances[:max].to_s, MinSize: instances[:min].to_s, DesiredCapacity: instances[:desired] ? instances[:desired].to_s : nil, Tags: , TerminationPolicies: [ 'Default' ], VPCZoneIdentifier: subnets }.compact } }, Outputs: { AsgName: { Description: 'The name of the auto scaling group', Value: { Ref: 'AutoScalingGroup' } } } } if rolling_update == :signal template[:Resources][:AutoScalingGroup][:UpdatePolicy] = { AutoScalingRollingUpdate: { MinInstancesInService: (instances[:desired]).to_s, MaxBatchSize: (instances[:desired]).to_s, PauseTime: 'PT10M', WaitOnResourceSignals: true, SuspendProcesses: %w[HealthCheck ReplaceUnhealthy AZRebalance AlarmNotification ScheduledActions] } } elsif rolling_update template[:Resources][:AutoScalingGroup][:UpdatePolicy] = { AutoScalingRollingUpdate: { MinInstancesInService: (instances[:min]).to_s, MaxBatchSize: '1', PauseTime: 'PT0S', SuspendProcesses: %w[HealthCheck ReplaceUnhealthy AZRebalance AlarmNotification ScheduledActions] } } end JSON.pretty_generate(template) end |
#instances_by_tags(tags = {}) ⇒ Object
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# File 'lib/terrafying/components/dynamicset.rb', line 269 def ( = {}) begin asgs = aws.() raise "Didn't find only one ASG :(" if asgs.count != 1 instances = { min: asgs[0].min_size, max: asgs[0].max_size, desired: asgs[0].desired_capacity } rescue RuntimeError => e warn("instances_by_tags: #{e}") instances = nil end instances end |
#profile_from(profile) ⇒ Object
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# File 'lib/terrafying/components/dynamicset.rb', line 156 def profile_from(profile) profile.respond_to?(:id) ? profile.id : profile end |
#resource_name_from(profile) ⇒ Object
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# File 'lib/terrafying/components/dynamicset.rb', line 160 def resource_name_from(profile) profile.respond_to?(:resource_name) ? [profile.resource_name] : [] end |
#vpc_endpoint_egress_rules(ident, security_group, vpc, vpc_endpoints) ⇒ Object
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# File 'lib/terrafying/components/dynamicset.rb', line 128 def vpc_endpoint_egress_rules(ident, security_group, vpc, vpc_endpoints) prefix_ids = vpc_endpoints.map do | e | vpc_endpoint = data :aws_vpc_endpoint, "#{ident}-#{tf_safe(e)}", { vpc_id: vpc.id, service_name: e, } vpc_endpoint[:prefix_list_id] end resource :aws_security_group_rule, "#{ident}-vpc-endpoint-egress", security_group_id: security_group, type: 'egress', from_port: 0, to_port: 0, protocol: -1, prefix_list_ids: prefix_ids end |