Module: Lono::Configure::Helpers

Extended by:
Memoist
Included in:
Base
Defined in:
lib/lono/configure/helpers.rb

Instance Method Summary collapse

Instance Method Details

#aws_account ⇒ Object 



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# File 'lib/lono/configure/helpers.rb', line 79

def 
  sts.get_caller_identity.
end

#default_key_name ⇒ Object 



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# File 'lib/lono/configure/helpers.rb', line 43

def default_key_name
  key_name
end

#default_subnet ⇒ Object 



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# File 'lib/lono/configure/helpers.rb', line 34

def default_subnet
  subnet_ids.first
end

#default_vpc_id ⇒ Object 



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# File 'lib/lono/configure/helpers.rb', line 38

def default_vpc_id
  vpc = find_vpc
  vpc.vpc_id if vpc # default vpc might have been deleted
end

#find_vpc(vpc_id = nil) ⇒ Object

If not vpc_id is provided, it tries to find the default vpc. If the default vpc doesnt exist, nilt is returned.



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# File 'lib/lono/configure/helpers.rb', line 114

def find_vpc(vpc_id=nil)
  if vpc_id
    resp = ec2.describe_vpcs(vpc_ids: [vpc_id])
  else
    resp = ec2.describe_vpcs(filters: [{name: "isDefault", values: ["true"]}])
  end

  vpcs = resp.vpcs
  vpcs.first
rescue Aws::EC2::Errors::InvalidVpcIDNotFound
  nil
end

#from_seed(key) ⇒ Object 



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# File 'lib/lono/configure/helpers.rb', line 47

def from_seed(key)
  seed[key.to_s]
end

#get_input(key, default: '') ⇒ Object 



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# File 'lib/lono/configure/helpers.rb', line 5

def get_input(key, default:'')
  value = get_seed(key, default: default, load_default: @options[:defaults])
  return value if value

  default_text = default.blank? ? '' : "(default: #{default})"
  print "Please provide value for #{key}#{default_text}: "
  value = $stdin.gets.strip
  value.blank? ? load_default(default) : value
end

#get_seed(key, default:, load_default: true) ⇒ Object

Defaults to loading the default



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# File 'lib/lono/configure/helpers.rb', line 16

def get_seed(key, default:, load_default: true)
  seed_value = from_seed(key)
  if seed_value
    puts "For #{key}, using seed value #{seed_value}"
    return seed_value
  end

  return load_default(default) if load_default
end

#key_name ⇒ Object 



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# File 'lib/lono/configure/helpers.rb', line 68

def key_name
  resp = ec2.describe_key_pairs
  key = resp.key_pairs.first

  if key
    key.key_name
  else
    "Please create a keypair and configure it here"
  end
end

#load_default(default) ⇒ Object 



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# File 'lib/lono/configure/helpers.rb', line 26

def load_default(default)
  if default.is_a?(Symbol)
    send(default) # IE: default_subnet
  else
    default # return the default as is
  end
end

#seed ⇒ Object 



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# File 'lib/lono/configure/helpers.rb', line 51

def seed
  if @options[:seed] == :convention
    convention_path = "seeds/#{@blueprint}/#{Lono.env}.yml"
    seed_file = convention_path
  else
    seed_file = @options[:seed]
  end

  unless File.exist?(seed_file)
    puts "WARN: unable to find seed file #{seed_file}".color(:yellow) if @options[:seed] != :convention
    return {}
  end
  puts "Using seed file: #{seed_file}"
  YAML.load_file(seed_file)
end

#select_subnets(subnets, regexp = nil) ⇒ Object 



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# File 'lib/lono/configure/helpers.rb', line 102

def select_subnets(subnets, regexp=nil)
  return subnets unless regexp

  subnets.select do |subnet|
    tags = subnet.tags
    name_tag = tags.find { |t| t.key == "Name" }
    name_tag && name_tag.value =~ regexp
  end
end

#subnet_ids(vpc_id: nil, regexp: nil) ⇒ Object 



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# File 'lib/lono/configure/helpers.rb', line 83

def subnet_ids(vpc_id: nil, regexp: nil)
  vpc = find_vpc(vpc_id)
  unless vpc
    # sometimes even default VPC has been deleted
    abort "ERROR: Cannot find subnets because cannot find vpc #{@vpc_id} Please double check that is the right vpc".color(:red)
  end

  resp = ec2.describe_subnets(filters: [{name: 'vpc-id', values: [vpc.vpc_id]}])
  subnets = resp.subnets # first subnet

  # Assume that the subnets have a Name tag with PrivateSubnet1, PrivateSubnet2, etc
  # This is part of the BoltOps blueprint stack.
  selected_subnets = select_subnets(subnets, regexp)

  # if cannot find selected subnets, then keep all the subnets
  subnets = selected_subnets unless selected_subnets.empty?
  subnets.map(&:subnet_id)
end