Class: AmazonInstance

Inherits:
Instance show all
Defined in:
lib/cluster/infrastructures/amazon_instance.rb

Instance Attribute Summary collapse

Attributes inherited from Instance

#address, #disabled_services, #friendly_name, #label, #services, #size, #start_time, #state

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from Instance

create, #disable, #enable, #initialize, #to_s

Constructor Details

This class inherits a constructor from Instance

Instance Attribute Details

#aws_availability_zone ⇒ Object

Returns the value of attribute aws_availability_zone.



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# File 'lib/cluster/infrastructures/amazon_instance.rb', line 2

def aws_availability_zone
  @aws_availability_zone
end

#aws_groups ⇒ Object Also known as: groups

Returns the value of attribute aws_groups.



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# File 'lib/cluster/infrastructures/amazon_instance.rb', line 2

def aws_groups
  @aws_groups
end

#aws_id ⇒ Object

Returns the value of attribute aws_id.



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# File 'lib/cluster/infrastructures/amazon_instance.rb', line 2

def aws_id
  @aws_id
end

#aws_image_id ⇒ Object

Returns the value of attribute aws_image_id.



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# File 'lib/cluster/infrastructures/amazon_instance.rb', line 2

def aws_image_id
  @aws_image_id
end

#aws_instance_id ⇒ Object

Returns the value of attribute aws_instance_id.



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# File 'lib/cluster/infrastructures/amazon_instance.rb', line 2

def aws_instance_id
  @aws_instance_id
end

#aws_instance_type ⇒ Object

Returns the value of attribute aws_instance_type.



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# File 'lib/cluster/infrastructures/amazon_instance.rb', line 2

def aws_instance_type
  @aws_instance_type
end

#aws_launch_time ⇒ Object

Returns the value of attribute aws_launch_time.



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# File 'lib/cluster/infrastructures/amazon_instance.rb', line 2

def aws_launch_time
  @aws_launch_time
end

#aws_state ⇒ Object

Returns the value of attribute aws_state.



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# File 'lib/cluster/infrastructures/amazon_instance.rb', line 2

def aws_state
  @aws_state
end

#dns_name ⇒ Object

Returns the value of attribute dns_name.



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# File 'lib/cluster/infrastructures/amazon_instance.rb', line 2

def dns_name
  @dns_name
end

#private_dns_name ⇒ Object

Returns the value of attribute private_dns_name.



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# File 'lib/cluster/infrastructures/amazon_instance.rb', line 2

def private_dns_name
  @private_dns_name
end

#spot_price ⇒ Object

Returns the value of attribute spot_price.



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# File 'lib/cluster/infrastructures/amazon_instance.rb', line 2

def spot_price
  @spot_price
end

#ssh_key_name ⇒ Object

Returns the value of attribute ssh_key_name.



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# File 'lib/cluster/infrastructures/amazon_instance.rb', line 2

def ssh_key_name
  @ssh_key_name
end

#start_time_sorted ⇒ Object

Returns the value of attribute start_time_sorted.



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# File 'lib/cluster/infrastructures/amazon_instance.rb', line 2

def start_time_sorted
  @start_time_sorted
end

Class Method Details

.size_to_type(size) ⇒ Object 



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# File 'lib/cluster/infrastructures/amazon_instance.rb', line 239

def size_to_type(size)
  case size
  when 'minimum', 'basic'
    'm1.small'
  when 'average'
    'm1.large'
  when 'power'
    'c1.medium'
  when 'super'
    'c1.xlarge'
  when /^\w+\.\w+$/
    size
  end
end

Instance Method Details

#amazon ⇒ Object 



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# File 'lib/cluster/infrastructures/amazon_instance.rb', line 223

def amazon
  Infrastructure.current
end

#attributes ⇒ Object 



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# File 'lib/cluster/infrastructures/amazon_instance.rb', line 85

def attributes
  args = fields.inject({'entry' => 'machine'}) {|m, attr|
    m.merge attr => self.send(attr)
  }
  Amazon.to_sdb_attributes(args)
end

#dns ⇒ Object 



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# File 'lib/cluster/infrastructures/amazon_instance.rb', line 28

def dns
  if Infrastructure.in_cluster?
    private_dns_name
  else
    dns_name
  end
end

#ec2_id=(id) ⇒ Object 



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# File 'lib/cluster/infrastructures/amazon_instance.rb', line 69

def ec2_id=(id)
  aws_instance_id = id
end

#fields ⇒ Object 



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# File 'lib/cluster/infrastructures/amazon_instance.rb', line 81

def fields
  %w(aws_id label start_time_sorted spot_price services disabled_services friendly_name ec2_id state)
end

#id ⇒ Object Also known as: ec2_id 



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# File 'lib/cluster/infrastructures/amazon_instance.rb', line 40

def id
  @aws_instance_id
end

#identified_by?(arg) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/cluster/infrastructures/amazon_instance.rb', line 17

def identified_by?(arg)
  arg = arg.downcase
  super(arg) or @private_dns_name == arg or @dns_name == arg
end

#image ⇒ Object 



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# File 'lib/cluster/infrastructures/amazon_instance.rb', line 227

def image
  return @aws_image_id if @aws_image_id
  amazon.get_image 64
end

#ip ⇒ Object 



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# File 'lib/cluster/infrastructures/amazon_instance.rb', line 36

def ip
  Infrastructure.dns.getaddress(dns).to_s
end

#key ⇒ Object 



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# File 'lib/cluster/infrastructures/amazon_instance.rb', line 142

def key
  groups.include?('access') ? 'access' : 'cloud'
end

#no_sdb? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/cluster/infrastructures/amazon_instance.rb', line 47

def no_sdb?
  !@set_sdb
end

#options ⇒ Object 



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# File 'lib/cluster/infrastructures/amazon_instance.rb', line 215

def options
  amazon.options
end

#set_sdb_attributes(args) ⇒ Object 



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# File 'lib/cluster/infrastructures/amazon_instance.rb', line 51

def set_sdb_attributes(args)
  args.each do |k, v|
    case k
    when 'start_time_sorted'
      self.start_time = Time.parse v
    when 'entry', 'ec2_id'
      # NOP
    when 'services'
      @services = v.is_a?(Array) ? v : Array(v)
    when 'disabled_services'
      @disabled_services = v.is_a?(Array) ? v : Array(v)
    else
      self.send("#{k}=", v)
    end
  end
  @set_sdb = true
end

#set_state(state) ⇒ Object 



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# File 'lib/cluster/infrastructures/amazon_instance.rb', line 210

def set_state(state)
  amazon.sdb.put_attributes amazon.domain, aws_id, Amazon.to_sdb_attributes(:state => state), :replace
  @state = state
end

#start!(price = nil) ⇒ Object 



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# File 'lib/cluster/infrastructures/amazon_instance.rb', line 92

def start!(price = nil)
  args = {
    :key_name => key,
    :user_data => user_data,
    :instance_type => type,
    :availability_zone => zone,
  }

  resp = if spot_price
           args.merge! :spot_price => spot_price,
             :instance_count => 1,
             :groups => groups,
             :image_id => image
           amazon.ecc.request_spot_instances args
         else
           args.merge! :group_ids => groups,
             :min_count => 1,
             :max_count => 1
           amazon.ecc.launch_instances image, args
         end

  if resp
    puts "INS RESP -> #{resp.inspect}"
    resp.first.keys.each do |k|
      func = "#{k.to_s}="
      send(func, resp.first[k]) if respond_to? func
    end

    res = amazon.sdb.put_attributes(amazon.domain, aws_id, attributes, :replace)
    puts "Res #{res.inspect}"
    self
  else
    nil
  end
end

#stop! ⇒ Object 



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# File 'lib/cluster/infrastructures/amazon_instance.rb', line 22

def stop!
  if amazon.ecc.terminate_instances(ec2_id)
    amazon.sdb.delete_attributes amazon.domain, aws_id
  end
end

#type ⇒ Object 



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# File 'lib/cluster/infrastructures/amazon_instance.rb', line 232

def type
  return @aws_instance_type if @aws_instance_type

  @aws_instance_type = self.class.size_to_type size
end

#user_data ⇒ Object 



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# File 'lib/cluster/infrastructures/amazon_instance.rb', line 146

def user_data
  %Q@#!/bin/bash

  CLUSTER_USER=ubuntu
  CLUSTER_DIR=/home/${CLUSTER_USER}/.cluster
  LOGGER=${CLUSTER_DIR}/cluster.log
  MONITOR=${CLUSTER_DIR}/monitor.god
  CREDENTIALS=${CLUSTER_DIR}/credentials.yml
  CLUSTER_EXECUTABLE=$(which cluster)
  GEM_PATH=$(gem env gempath)
  GEM_BIN_DIR=$(dirname ${CLUSTER_EXECUTABLE})
  GOD=$(type -p god)

  if [[ ! -e $CLUSTER_DIR ]]; then
    mkdir -m 700 $CLUSTER_DIR
  fi

  if [[ ! -e $CREDENTIALS ]]; then
    wget --no-check-certificate -O $CREDENTIALS '#{amazon.credentials_url}'
  fi

  if [[ ! -e $CREDENTIALS ]]; then
    echo "Cannot start without credentials! (perhaps a cluster save_credentials is in order)"
    exit 1
  fi

  chmod 600 $CREDENTIALS
  chown $CLUSTER_USER $CREDENTIALS
  cat >>$CREDENTIALS <<EOF
  cluster:
    id: #{aws_id}
    services: #{services.join(' ')}
  EOF

  CLUSTER='X'
  if type -P cluster >/dev/null; then
    CLUSTER=cluster
  elif [[ -x $GEM_BIN_DIR/cluster ]]; then
    CLUSTER="$GEM_BIN_DIR/cluster"
  fi

  if [[ ! $CLUSTER == 'X' ]]; then
    CLUSTER="$CLUSTER --credentials=${CREDENTIALS} --logger=${LOGGER}"
    $CLUSTER instance_state starting

    $CLUSTER fetch_monitor ${MONITOR}
    if [[ -e $MONITOR ]]; then
      chmod 600 $MONITOR
      chown $CLUSTER_USER $MONITOR
      mv $MONITOR /etc/god/init.d/cluster.god
      $GOD load /etc/god/init.d/010_cluster.god
    else
      echo "NO MONITOR FILE!"
      exit 1
    fi
  else
    echo "NO CLUSTER!"
    exit 1
  fi

  chown -R $CLUSTER_USER:$CLUSTER_USER $CLUSTER_DIR
  @.gsub(/^    /, '')
end

#zone ⇒ Object 



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# File 'lib/cluster/infrastructures/amazon_instance.rb', line 219

def zone
  amazon.options.zone
end