Class: EC2::Host::EC2Client

Inherits:
Object
  • Object
show all
Defined in:
lib/ec2/host/ec2_client.rb

Instance Method Summary collapse

Instance Method Details

#instance_id ⇒ Object 



20
21
22
23
24
25
26
27
28
29
 
# File 'lib/ec2/host/ec2_client.rb', line 20

def instance_id
  return @instance_id if @instance_id
  begin
    http_conn = Net::HTTP.new('169.254.169.254')
    http_conn.open_timeout = 5
    @instance_id = http_conn.start {|http| http.get('/latest/meta-data/instance-id').body }
  rescue Net::OpenTimeout
    raise "HTTP connection to 169.254.169.254 is timeout. Probably, not an EC2 instance?"
  end
end

#instances(condition) ⇒ Object 



7
8
9
10
11
12
13
14
15
16
17
18
 
# File 'lib/ec2/host/ec2_client.rb', line 7

def instances(condition)
  filters = build_filters(condition)
  instances =
    if filters
      ec2.describe_instances(filters: filters)
    elsif instance_id = condition[:instance_id]
      ec2.describe_instances(instance_ids: Array(instance_id))
    else
      ec2.describe_instances
    end
  instances.reservations.map(&:instances).flatten
end