Class: CapEC2::EC2Handler

Inherits:
Object
  • Object
show all
Includes:
Utils
Defined in:
lib/cap-ec2/ec2-handler.rb

Instance Method Summary collapse

Methods included from Utils

contact_point, contact_point_mapping, #get_regions, #load_config, #project_tag, #roles_tag, #stages_tag, #tag_delimiter, #tag_value

Constructor Details

#initialize ⇒ EC2Handler

Returns a new instance of EC2Handler.



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# File 'lib/cap-ec2/ec2-handler.rb', line 7

def initialize
  load_config
  configured_regions = get_regions(fetch(:ec2_region))
  @ec2 = {}
  configured_regions.each do |region|
    @ec2[region] = ec2_connect(region)
  end
end

Instance Method Details

#application ⇒ Object 



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# File 'lib/cap-ec2/ec2-handler.rb', line 54

def application
  Capistrano::Configuration.env.fetch(:application).to_s
end

#defined_roles ⇒ Object 



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# File 'lib/cap-ec2/ec2-handler.rb', line 46

def defined_roles
  roles(:all).flat_map(&:roles_array).uniq.sort
end

#ec2_connect(region = nil) ⇒ Object 



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# File 'lib/cap-ec2/ec2-handler.rb', line 16

def ec2_connect(region=nil)
  Aws::EC2::Client.new(
    access_key_id: fetch(:ec2_access_key_id),
    secret_access_key: fetch(:ec2_secret_access_key),
    region: region
  )
end

#get_server(instance_id) ⇒ Object 



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# File 'lib/cap-ec2/ec2-handler.rb', line 84

def get_server(instance_id)
  @ec2.reduce([]) do |acc, (_, ec2)|
    acc << ec2.instances[instance_id]
  end.flatten.first
end

#get_servers_for_role(role) ⇒ Object 



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# File 'lib/cap-ec2/ec2-handler.rb', line 62

def get_servers_for_role(role)
  filters = [
    {name: 'tag-key', values: [stages_tag, project_tag]},
    {name: tag(project_tag), values: ["*#{application}*"]},
    {name: 'instance-state-name', values: %w(running)}
  ]

  servers = []
  @ec2.each do |_, ec2|
    ec2.describe_instances(filters: filters).reservations.each do |r|
      servers += r.instances.select do |i|
          instance_has_tag?(i, roles_tag, role) &&
            instance_has_tag?(i, stages_tag, stage) &&
            instance_has_tag?(i, project_tag, application) &&
            (fetch(:ec2_filter_by_status_ok?) ? instance_status_ok?(i) : true)
      end
    end
  end

  servers.sort_by { |s| tag_value(s, 'Name') || '' }
end

#instance_ids ⇒ Object 



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# File 'lib/cap-ec2/ec2-handler.rb', line 38

def instance_ids
  puts defined_roles.map {|r| get_servers_for_role(r)}
               .flatten
               .uniq {|i| i.instance_id}
               .map {|i| i.instance_id}
               .join("\n")
end

#server_names ⇒ Object 



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# File 'lib/cap-ec2/ec2-handler.rb', line 30

def server_names
  puts defined_roles.map {|r| get_servers_for_role(r)}
               .flatten
               .uniq {|i| i.instance_id}
               .map {|i| tag_value(i, 'Name')}
               .join("\n")
end

#stage ⇒ Object 



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# File 'lib/cap-ec2/ec2-handler.rb', line 50

def stage
  Capistrano::Configuration.env.fetch(:stage).to_s
end

#status_table ⇒ Object 



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# File 'lib/cap-ec2/ec2-handler.rb', line 24

def status_table
  CapEC2::StatusTable.new(
    defined_roles.map {|r| get_servers_for_role(r)}.flatten.uniq {|i| i.instance_id}
  )
end

#tag(tag_name) ⇒ Object 



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# File 'lib/cap-ec2/ec2-handler.rb', line 58

def tag(tag_name)
  "tag:#{tag_name}"
end