Class: Elb::Deploy

Inherits:
Object
  • Object
show all
Includes:
Helper
Defined in:
lib/elb/deploy.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from Helper

#as, #cfn, #ec2, #r53, #rds, #setup_aws

Constructor Details

#initialize(options = {}) ⇒ Deploy

Returns a new instance of Deploy.



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# File 'lib/elb/deploy.rb', line 6

def initialize(options={})
  @options = options
  @instance_id = options[:instance_id] || %x[curl -s http://instance-data.ec2.internal/latest/meta-data/instance-id].strip
  setup_aws
end

Instance Attribute Details

#instance_id ⇒ Object (readonly)

Returns the value of attribute instance_id.



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# File 'lib/elb/deploy.rb', line 5

def instance_id
  @instance_id
end

Instance Method Details

#add_inbound ⇒ Object 



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# File 'lib/elb/deploy.rb', line 48

def add_inbound
  %x{sudo /sbin/iptables -D INPUT -j DROP -p tcp --destination-port 80 -i eth0}
end

#asg ⇒ Object 



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# File 'lib/elb/deploy.rb', line 23

def asg
  return @asg if @asg
  name = ec2.instances[instance_id].tags["aws:autoscaling:groupName"]
  @asg = as.groups[name]
end

#deregister ⇒ Object 



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# File 'lib/elb/deploy.rb', line 34

def deregister
  UI.say("Deregistering server from ELB")
  return true if @options[:noop]
  elb.client.deregister_instances_from_load_balancer(
    :load_balancer_name => elb.name,
    :instances => [{:instance_id => @instance_id}]
  )
  wait(@options[:wait]) # takes a while for the elb to deregister
end

#drop_inbound ⇒ Object 



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# File 'lib/elb/deploy.rb', line 44

def drop_inbound
  %x{sudo /sbin/iptables -A INPUT -j DROP -p tcp --destination-port 80 -i eth0}
end

#elb ⇒ Object 



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# File 'lib/elb/deploy.rb', line 29

def elb
  return @elb if @elb
  @elb = asg.load_balancers.first
end

#register ⇒ Object 



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# File 'lib/elb/deploy.rb', line 63

def register
  UI.say("Registering server with ELB")
  return true if @options[:noop]
  elb.client.register_instances_with_load_balancer(
    :load_balancer_name => elb.name,
    :instances => [{:instance_id => @instance_id}]
  )
end

#restart ⇒ Object 



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# File 'lib/elb/deploy.rb', line 53

def restart
  UI.say("Restarting server")
  system(@options[:restart_command])
end

#run ⇒ Object 



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# File 'lib/elb/deploy.rb', line 12

def run
  UI.say("Restarting server started")
  deregister
  drop_inbound
  restart
  warm
  add_inbound
  register
  UI.say("Restarting server completed")
end

#wait(n) ⇒ Object 



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# File 'lib/elb/deploy.rb', line 72

def wait(n)
  sleep n
end

#warm ⇒ Object 



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# File 'lib/elb/deploy.rb', line 58

def warm
  UI.say("Warming up server")
  system(@options[:warm_command])
end