Class: AwsUtils::Ec2Info

Inherits:
Object
  • Object
show all
Defined in:
lib/awsutils/ec2info.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Ec2Info

Returns a new instance of Ec2Info.



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# File 'lib/awsutils/ec2info.rb', line 352

def initialize
  if (ARGV[0] == '') || !ARGV[0]
    puts 'Please specify a search term (Host Name or Instance ID)'
    exit 1
  end

  args = ARGV

  if args.include?('-s') || args.include?('--short')
    args.delete '-s'
    args.delete '--short'

    @search_terms = args

    describe_instance_short
  else
    @search_terms = args
    describe_instance
  end
end

Instance Attribute Details

#search_terms ⇒ Object (readonly)

Returns the value of attribute search_terms.



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# File 'lib/awsutils/ec2info.rb', line 45

def search_terms
  @search_terms
end

Instance Method Details

#describe_instance ⇒ Object 



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# File 'lib/awsutils/ec2info.rb', line 173

def describe_instance
  col_green = "\033[32;1m" # Style: Bold; Color: Green
  col_red = "\033[31;1m" # Style: Bold; Color: Red
  # col_blinking_red = "\033[31;5m"

  key_color = "\033[30;1m" # Style: Bold; Color: Default
  reset_color = "\033[0m"

  instances.each do |instance|
    puts "#{key_color}NAME:#{reset_color} #{instance.tags['Name']}"
    puts

    instance.attributes.each do |instance_attribute, _value|
      puts "Instance attribute: #{instance_attribute}" if $DEBUG

      case instance_attribute
      when :block_device_mapping
        puts "#{key_color}Block Devices:#{reset_color} "

        instance.block_device_mapping.each do |vol|
          vol_obj = ec2.volumes.get(vol['volumeId'])

          puts "\t#{key_color}Size:#{reset_color} #{vol_obj.size} GB"
          puts "\t#{key_color}Volume ID:#{reset_color} #{vol_obj.id}"
          puts "\t#{key_color}Device Name:#{reset_color} #{vol_obj.device}"

          if vol_obj.delete_on_termination
            puts "\t#{key_color}Delete on Termination:#{reset_color} " \
              "#{col_red}YES#{reset_color}"
          else
            puts "\t#{key_color}Delete on Termination:#{reset_color} " \
              "#{col_green}NO#{reset_color}"
          end

          puts "\t#{key_color}Attach Time:#{reset_color} #{vol_obj.attached_at}"
          puts "\t#{key_color}Creation Time:#{reset_color} #{vol_obj.created_at}"

          if vol_obj.snapshot_id
            snap_obj = ec2.snapshots.get(vol_obj.snapshot_id)

            print "\t#{key_color}Snapshot ID:#{reset_color} #{vol_obj.snapshot_id}"

            puts " (Created: #{snap_obj.created_at})" if defined?(snap_obj.created_at)

            if defined?(snap_obj.tags) && snap_obj.tags != {}
              puts "\t\t#{key_color}Tags:#{reset_color}"

              snap_obj.tags.each do |snap_tag, snap_tag_value|
                puts "\t\t\t#{key_color}#{snap_tag}:#{reset_color} #{snap_tag_value}"
              end
            end
          end

          puts "\t#{key_color}State:#{reset_color} #{vol_obj.state}" if vol_obj.state != 'in-use'

          status_color =
            if vol['status'] == 'attached'
              col_green
            else
              col_red
            end

          puts "\t#{key_color}Status:#{reset_color} #{status_color}#{vol['status']}#{reset_color}"

          if vol_obj.tags != {}
            puts "\t#{key_color}Tags:#{reset_color}"

            vol_obj.tags.each do |vol_tag, vol_tag_value|
              puts "\t\t#{key_color}#{vol_tag}:#{reset_color} #{vol_tag_value}"
            end

          end

          puts "\t---------------------------------------" if vol != instance.block_device_mapping.last
        end

      when :client_token
        if instance.client_token
          puts "#{key_color}Client Token:#{reset_color} #{instance.client_token}"
        elsif $DEBUG
          puts "#{key_color}Client Token:#{reset_color} N/A"
        end
      when :groups
        instance.groups.each do |group_id|
          group = ec2.security_groups.get(group_id)

          next unless group

          puts "#{key_color}Security Group:#{reset_color} #{group.name}"
          puts "\t#{key_color}Description:#{reset_color} #{group.description}"
          puts "\t#{key_color}ID:#{reset_color} #{group.group_id}"
          break
        end

      when :flavor_id
        instance_flavor = ec2.flavors.get(instance.flavor_id)

        puts "#{key_color}Flavor:#{reset_color} #{instance_flavor.id}"

        puts "\t#{key_color}Name:#{reset_color} #{instance_flavor.name}"
        puts "\t#{key_color}Architecture:#{reset_color} #{instance_flavor.bits} bit"
        puts "\t#{key_color}Cores:#{reset_color} #{instance_flavor.cores}"
        puts "\t#{key_color}Instance Storage (in /mnt):#{reset_color} #{instance_flavor.disk} GB"
        puts "\t#{key_color}RAM:#{reset_color} #{instance_flavor.ram} MB"
      when :image_id
        puts "#{key_color}Image ID:#{reset_color} #{instance.image_id}"

        image_obj = ec2.images.get(instance.image_id)

        puts "\t#{key_color}Name:#{reset_color} #{image_obj.name}" if defined?(image_obj.name)

        puts "\t#{key_color}Description:#{reset_color} #{image_obj.description}" if defined?(image_obj.description)

        puts "\t#{key_color}Location:#{reset_color} #{image_obj.location}" if defined?(image_obj.location)

        puts "\t#{key_color}Arch:#{reset_color} #{image_obj.architecture}" if defined?(image_obj.architecture)

        if defined?(image_obj.tags) && (image_obj.tags != {})
          puts "\t#{key_color}Tags:#{reset_color}"

          image_obj.tags.each do |image_tag, image_tag_value|
            puts "\t\t#{key_color}#{image_tag}: #{image_tag_value}"
          end
        end
      when :product_codes
        if instance.product_codes.any?
          puts "#{key_color}Product Codes:#{reset_color} #{instance.product_codes.join(',')}"
        elsif $DEBUG
          puts "#{key_color}Product Codes:#{reset_color} N/A"
        end
      when :public_ip_address
        if ec2.addresses.get(instance.public_ip_address)
          puts "#{key_color}Public IP Address:#{reset_color} " \
               "#{instance.public_ip_address} (#{col_green}STATIC#{reset_color})"
        else
          puts "#{key_color}Public IP Address:#{reset_color} " \
               "#{instance.public_ip_address} (#{col_red}DYNAMIC#{reset_color})"
        end
      when :state
        state_color = get_state_color(instance.state)
        puts "#{key_color}State:#{reset_color} #{state_color}#{instance.state}#{reset_color}"
      when :state_reason
        if instance.state_reason.any?
          puts "#{key_color}State Reason Code:#{reset_color} #{instance.state_reason['Code']}"
        elsif $DEBUG
          puts "#{key_color}State Reason Code:#{reset_color} N/A"
        end
      when :tags
        if instance.tags.any?
          puts "#{key_color}Tags:#{reset_color} "

          instance.tags.each do |tag, value|
            puts "\t#{key_color}#{tag}:#{reset_color} #{value}"
          end
        else
          puts "#{key_color}Tags:#{reset_color} None"
        end
      else
        if instance.respond_to?(instance_attribute) && !instance.send(instance_attribute).nil?
          printkv instance_attribute, instance.send(instance_attribute)
        else
          printkv instance_attribute, '<NULL>'
        end
      end
    end

    if instance.instance_initiated_shutdown_behavior
      puts "#{key_color}Shutdown Behavior:#{reset_color} " \
           "#{instance.instance_initiated_shutdown_behavior}"
    else
      puts "#{key_color}Shutdown Behavior:#{reset_color} Do nothing"
    end

    if instance.id != instances.last.id
      puts '------------------------------------------------------------------------------------'
    end
  end
end

#describe_instance_short ⇒ Object 



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# File 'lib/awsutils/ec2info.rb', line 125

def describe_instance_short
  key_color = "\033[30;1m" # Style: Bold; Color: Default
  reset_color = "\033[0m"

  printf("#{key_color}%-50s %-11s %-12s %-13s %-10s %s#{reset_color}\n",
         'Name',
         'Zone',
         'ID',
         'Group',
         'Flavor',
         'State')

  instances.each do |inst|
    s_color = get_state_color(inst.state)
    f_color = get_flavor_color(inst.flavor_id)

    printf(
      "%-50s %-11s %-12s %-13s #{f_color}%-10s#{reset_color} #{s_color}%s#{reset_color}\n",
      inst.tags['Name'],
      inst.availability_zone,
      inst.id,
      inst.groups.first,
      inst.flavor_id,
      inst.state
    )
  end
end

#ec2 ⇒ Object 



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# File 'lib/awsutils/ec2info.rb', line 47

def ec2
  @ec2 ||= Fog::Compute.new(provider: 'AWS')
end

#get_flavor_color(flavor) ⇒ Object 



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# File 'lib/awsutils/ec2info.rb', line 85

def get_flavor_color(flavor)
  fcolor =
    case flavor
    when 't1.micro'
      '1;33'
    when 'm1.large'
      '0;33'
    when 'm1.xlarge'
      '0;34'
    when 'm2.2xlarge'
      '0;35'
    when 'm2.4xlarge'
      '0;31'
    when 'm2.xlarge'
      '0;36'
    else
      '0'
    end

  "\033[#{fcolor}m"
end

#get_state_color(state) ⇒ Object 



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# File 'lib/awsutils/ec2info.rb', line 107

def get_state_color(state)
  scolor =
    case state
    when 'running'
      '1;32'
    when 'stopped'
      '1;31'
    when 'starting'
      '5;32'
    when 'stopping'
      '5;31'
    else
      '0'
    end

  "\033[#{scolor}m"
end

#instances ⇒ Object

TODO: Naming/MemoizedInstanceVariableName: Memoized variable @instance_ids does not match method name instances.



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# File 'lib/awsutils/ec2info.rb', line 53

def instances
  @instances ||= begin
    if $DEBUG
      puts 'Entering instance_ids'
      puts "Search Term: #{search_terms.inspect}"
    end

    instance_ids = search_terms.each_with_object([]) do |search_term, m|
      if (/^i-/ =~ search_term) && !(/\./ =~ search_term)
        m << search_term
      else
        ec2.servers.each do |server|
          next unless server.tags.key?('Name') \
            && (server.tags['Name'] != '') \
            && (/#{search_term}/i =~ server.tags['Name'])

          m << server.id
        end
      end
    end

    if instance_ids.empty?
      puts 'No instances by that Name/ID in this account'
      exit 1
    end

    puts "Found instances: #{instance_ids.inspect}" if $DEBUG

    ec2.servers.all 'instance-id' => instance_ids
  end
end

#printkv(key, value) ⇒ Object 



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# File 'lib/awsutils/ec2info.rb', line 153

def printkv(key, value)
  key_color = "\033[30;1m" # Style: Bold; Color: Default
  reset_color = "\033[0m"

  print "#{key_color}#{key.to_s.title_case}:#{reset_color} "
  if value.respond_to?(:to_sym)
    puts value
  elsif value.respond_to?(:key?)
    puts
    value.each { |k, v| printkv "  #{k}", v }
  # If value only contains strings, do this
  elsif value.respond_to?(:join) &&
        value.reject { |item| item.respond_to?(:to_sym) }.empty?

    value.join(', ')
  else
    puts value.inspect
  end
end