Module: Inf::AWS

Defined in:
lib/aws.rb

Class Method Summary collapse

Class Method Details

.bootstrap_script(app_name, state_bucket, fleet_name) ⇒ Object 



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# File 'lib/aws.rb', line 22

def self.bootstrap_script(app_name, state_bucket, fleet_name)
  <<BOOTSTRAP_SCRIPT
#!/bin/bash

cd /tmp

cat > bootstrap-env <<EOF
export APP_NAME=#{app_name}
export STATE_BUCKET=#{state_bucket}
export FLEET_NAME=#{fleet_name}
export AWS_REGION=#{ENV['AWS_REGION']}
export JENKINS_PUBLIC_KEY='#{ENV['JENKINS_PUBLIC_KEY']}'
EOF

. ./bootstrap-env

aws s3 cp s3://$STATE_BUCKET/apps/$APP_NAME/bootstrap-instance.sh ./bootstrap.sh
chmod +x bootstrap.sh

( setsid ./bootstrap.sh 2>&1 | setsid logger -t bootstrap ) & disown

BOOTSTRAP_SCRIPT
end

.ec2 ⇒ Object 



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# File 'lib/aws.rb', line 6

def self.ec2
  @ec2 ||= Aws::EC2::Client.new
end

.elb ⇒ Object 



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# File 'lib/aws.rb', line 10

def self.elb
  @elb ||= Aws::ElasticLoadBalancing::Client.new
end

.launch_load_balancer ⇒ Object 



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# File 'lib/aws.rb', line 46

def self.launch_load_balancer
  lb_name = "app-lb-#{app_name}"
  cert = ENV['CERT_ARN']

  listeners = [{
    instance_port: 5000,
    instance_protocol: 'HTTP',
    load_balancer_port: 80,
    protocol: 'HTTP'
  }]

  cert && listeners.push(
    instance_port: 5000,
    instance_protocol: 'HTTP',
    load_balancer_port: 443,
    protocol: 'HTTPS',
    ssl_certificate_id: cert
  )

  lb_dns = elb.create_load_balancer(
    load_balancer_name: lb_name,
    subnets: ENV['SUBNET_IDS'].split(','),
    security_groups: [ENV['ELB_SG']],
    scheme: 'internet-facing',
    listeners: listeners
  ).dns_name

  elb.configure_health_check(
    load_balancer_name: lb_name,
    health_check: {
      target: 'HTTP:5000/health_check',
      interval: 10, # seconds
      timeout: 5, # seconds to respond
      unhealthy_threshold: 2, # two consecutive failures
      healthy_threshold: 2
    }
  )

  put_state("apps/#{app_name}/lb-name", lb_name)
  put_state("apps/#{app_name}/lb-dns", lb_dns)

  puts 'Launched load balancer (or it was running)'.blue
end

.method_missing(m, *args, &block) ⇒ Object 



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# File 'lib/aws.rb', line 2

def self.method_missing(m, *args, &block)
  Inf.send(m, *args, &block)
end

.request_spot_fleet(fleet_name = 'default') ⇒ Object 



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# File 'lib/aws.rb', line 90

def self.request_spot_fleet(fleet_name='default')
  launch_specifications = ENV['SUBNET_IDS'].split(',').map do |subnet_id|
    ENV['INSTANCE_TYPES'].split(',').map do |type|
      {
        image_id: ENV['AMI'],
        key_name: ENV['KEY_NAME'],
        instance_type: type,
        monitoring: {
          enabled: false,
        },
        network_interfaces: [{
          associate_public_ip_address: true,
          device_index: 0,
          groups: [ENV['SG']],
          subnet_id: subnet_id
        }],
        iam_instance_profile: {
          name: ENV['INSTANCE_PROFILE_NAME'],
        },
        # ebs_optimized: type == 'm1.small' ? false : false,
        weighted_capacity: 1.0,
        user_data: Base64.strict_encode64(bootstrap_script(app_name, state_bucket, fleet_name))
      }
    end
  end.flatten

  tag_specifications = [{
    tags: [{
      key: 'app_name',
      value: app_name
    }, {
      key: 'fleet_name',
      value: fleet_name
    }]
  }]

  resp = ec2.request_spot_fleet(
    spot_fleet_request_config: {
      spot_price: ENV['SPOT_PRICE'],
      target_capacity: ENV['TARGET_CAPACITY'],
      valid_from: Time.now,
      valid_until: Time.parse('1/1/2050'),
      terminate_instances_with_expiration: ENV['TERMINATE_INSTANCES'],
      iam_fleet_role: ENV['FLEET_ROLE'],
      launch_specifications: launch_specifications,
      # tag_specifications: tag_specifications,
      excess_capacity_termination_policy: 'default', # accepts noTermination, default
      allocation_strategy: 'diversified', # accepts lowestPrice, diversified
      type: 'maintain', # accepts request, maintain
      replace_unhealthy_instances: true,
    },
  )

  resp.spot_fleet_request_id.tap do |sfr|
    puts "Launched spot fleet #{fleet_name} (#{sfr})".blue
    put_state("apps/#{app_name}/fleets/#{fleet_name}/sfr", sfr)
  end
end

.route53 ⇒ Object 



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# File 'lib/aws.rb', line 18

def self.route53
  @route53 ||= Aws::Route53::Client.new
end

.s3 ⇒ Object 



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# File 'lib/aws.rb', line 14

def self.s3
  @s3 ||= Aws::S3::Client.new
end