Class: Capistrano::Autoscale::AWS::AutoscaleGroup

Inherits:
Base
  • Object
show all
Defined in:
lib/capistrano/autoscale/aws/autoscale_group.rb

Constant Summary collapse

SUSPEND_PROCESSES = 
%w[Launch Terminate].freeze
LIFECYCLE_STATE_IN_SERVICE = 
'InService'
LIFECYCLE_STATE_STANDBY = 
'Standby'
AMI_PREFIX_TAG = 
'Autoscale-Ami-Prefix'

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods inherited from Base

#autoscaling_client, #aws_access_key_id, #aws_autoscale_ami_tags, #aws_autoscale_snapshot_tags, #aws_credentials, #aws_options, #aws_region, #aws_secret_access_key, #ec2_client

Constructor Details

#initialize(name) ⇒ AutoscaleGroup

Returns a new instance of AutoscaleGroup.

Raises:



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# File 'lib/capistrano/autoscale/aws/autoscale_group.rb', line 16

def initialize(name)
  @name = name
  @aws_counterpart = Aws::AutoScaling::AutoScalingGroup.new name: name, client: autoscaling_client

  raise Capistrano::Autoscale::Errors::NoAutoScalingGroup, name unless @aws_counterpart.exists?
end

Instance Attribute Details

#aws_counterpart ⇒ Object (readonly)

Returns the value of attribute aws_counterpart.



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# File 'lib/capistrano/autoscale/aws/autoscale_group.rb', line 14

def aws_counterpart
  @aws_counterpart
end

#name ⇒ Object (readonly)

Returns the value of attribute name.



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# File 'lib/capistrano/autoscale/aws/autoscale_group.rb', line 14

def name
  @name
end

Instance Method Details

#ami_prefix ⇒ Object 



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# File 'lib/capistrano/autoscale/aws/autoscale_group.rb', line 62

def ami_prefix
  tags[AMI_PREFIX_TAG]
end

#enter_standby(instance) ⇒ Object 



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# File 'lib/capistrano/autoscale/aws/autoscale_group.rb', line 66

def enter_standby(instance)
  instance = aws_counterpart.instances.select { |i| i.id == instance.id }.first
  instance.enter_standby(should_decrement_desired_capacity: true)

  loop do
    break if instance.lifecycle_state == LIFECYCLE_STATE_STANDBY

    sleep 1
    instance.load
  end
end

#exit_standby(instance) ⇒ Object 



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# File 'lib/capistrano/autoscale/aws/autoscale_group.rb', line 78

def exit_standby(instance)
  instance = aws_counterpart.instances.select { |i| i.id == instance.id }.first
  instance.exit_standby
end

#instances ⇒ Object 



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# File 'lib/capistrano/autoscale/aws/autoscale_group.rb', line 23

def instances
  instance_ids = aws_counterpart.instances.map(&:instance_id)
  InstanceCollection.new(instance_ids)
end

#instances_in_service ⇒ Object 



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# File 'lib/capistrano/autoscale/aws/autoscale_group.rb', line 28

def instances_in_service
  instance_ids = aws_counterpart.instances.select { |i| i.lifecycle_state == LIFECYCLE_STATE_IN_SERVICE }.map(&:instance_id)
  InstanceCollection.new(instance_ids)
end

#launch_template ⇒ Object

Raises:



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# File 'lib/capistrano/autoscale/aws/autoscale_group.rb', line 33

def launch_template
  lts = aws_launch_template || aws_launch_template_specification
  raise Capistrano::Autoscale::Errors::NoLaunchTemplate unless lts

  LaunchTemplate.new(
    lts.launch_template_id,
    lts.launch_template_name,
    lts.version,
    false,
    nil
  )
end

#resume ⇒ Object 



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# File 'lib/capistrano/autoscale/aws/autoscale_group.rb', line 50

def resume
  aws_counterpart.resume_processes(scaling_processes: SUSPEND_PROCESSES)
end

#suspend ⇒ Object 



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# File 'lib/capistrano/autoscale/aws/autoscale_group.rb', line 46

def suspend
  aws_counterpart.suspend_processes(scaling_processes: SUSPEND_PROCESSES)
end

#suspended? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/capistrano/autoscale/aws/autoscale_group.rb', line 54

def suspended?
  aws_counterpart.suspended_processes.map(&:process_name).any? { |name| SUSPEND_PROCESSES.include?(name) }
end

#tags ⇒ Object 



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# File 'lib/capistrano/autoscale/aws/autoscale_group.rb', line 58

def tags
  aws_counterpart.tags.map { |tag| [tag.key, tag.value] }.to_h
end