Class: Commands::EipCommand

Inherits:
Command show all
Defined in:
lib/commands.rb

Constant Summary collapse

CLOSED_DOWN_STATES = 
Set.new(%w(TERMINATED SHUTTING_DOWN COMPLETED FAILED))
WAITING_OR_RUNNING_STATES = 
Set.new(%w(WAITING RUNNING))

Instance Attribute Summary collapse

Attributes inherited from Command

#arg, #commands, #description, #logger, #name

Instance Method Summary collapse

Methods inherited from Command

#get_field, #has_value, #have, #option, #require, #require_single_jobflow, #resolve, #validate

Constructor Details

#initialize(*args) ⇒ EipCommand

Returns a new instance of EipCommand.


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# File 'lib/commands.rb', line 1292

def initialize(*args)
  super(*args)
end

Instance Attribute Details

#instance_id ⇒ Object

Returns the value of attribute instance_id.


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# File 'lib/commands.rb', line 1287

def instance_id
  @instance_id
end

#jobflow_detail ⇒ Object

Returns the value of attribute jobflow_detail.


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# File 'lib/commands.rb', line 1287

def jobflow_detail
  @jobflow_detail
end

#jobflow_id ⇒ Object

Returns the value of attribute jobflow_id.


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# File 'lib/commands.rb', line 1287

def jobflow_id
  @jobflow_id
end

#key_pair_file ⇒ Object

Returns the value of attribute key_pair_file.


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# File 'lib/commands.rb', line 1287

def key_pair_file
  @key_pair_file
end

#no_wait ⇒ Object

Returns the value of attribute no_wait.


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# File 'lib/commands.rb', line 1287

def no_wait
  @no_wait
end

Instance Method Details

#enact(client) ⇒ Object 


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# File 'lib/commands.rb', line 1315

def enact(client)
  self.jobflow_id = require_single_jobflow
  self.jobflow_detail = client.describe_jobflow_with_id(self.jobflow_id)
  if ! get_field(:no_wait) then
    wait_for_jobflow(client)
  end
  self.instance_id = self.jobflow_detail['Instances']['MasterInstanceId']
  if ! self.instance_id then
    logger.error("The master instance is not available yet for jobflow #{self.jobflow_id}. It might still be starting.")
    exit(-1)
  end

  ec2_endpoint = "https://ec2.amazonaws.com"
  az = self.jobflow_detail['Instances']['Placement']['AvailabilityZone']
  reg_length = "us-east-1".length
  if az[0, reg_length] == "us-east-1" then
    ec2_endpoint = "https://ec2.us-east-1.amazonaws.com"
  elsif az[0, reg_length] == "us-west-1" then
    ec2_endpoint = "https://ec2.us-west-1.amazonaws.com"
  elsif az[0, reg_length] == "eu-west-1" then
    ec2_endpoint = "https://ec2.eu-west-1.amazonaws.com"
  elsif az[0, reg_length] == "ap-southeast-1" then
    ec2_endpoint = "https://ec2.ap-southeast-1.amazonaws.com"
  elsif az[0, reg_length] == "ap-northeast-1" then
    ec2_endpoint = "https://ec2.ap-northeast-1.amazonaws.com"
  end
  commands.global_options[:ec2_endpoint] = ec2_endpoint
  
  self.key_pair_file = require(:key_pair_file, "Missing required option --key-pair-file for #{name}")
  eip = get_field(:arg)

  ec2_client = Ec2ClientWrapper.new(commands, logger)

  if ! eip then
    begin
      response = ec2_client.allocate_address()
    rescue Exception => e
      logger.error("Error during AllocateAddres: " + e.message)
      if get_field(:trace) then
        logger.puts(e.backtrace.join("\n"))
      end
      exit(-1)
    end

    eip = response['publicIp']
    logger.info("Allocated Public IP: #{eip}...")
  end

  begin
    response = ec2_client.associate_address(self.instance_id, eip)
    logger.info("Public IP: #{eip} was assigned to jobflow #{self.jobflow_id}")
  rescue Exception => e
    logger.error("Error during AssociateAddres: " + e.to_s)
    if get_field(:trace) then
      logger.puts(e.backtrace.join("\n"))
    end
    exit(-1)
  end

end

#exec(cmd) ⇒ Object 


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# File 'lib/commands.rb', line 1296

def exec(cmd)
  commands.exec(cmd)
end

#wait_for_jobflow(client) ⇒ Object 


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# File 'lib/commands.rb', line 1300

def wait_for_jobflow(client)
  while true do
    state = resolve(self.jobflow_detail, "ExecutionStatusDetail", "State")
    if WAITING_OR_RUNNING_STATES.include?(state) then
      break
    elsif CLOSED_DOWN_STATES.include?(state) then
      raise RuntimeError, "Jobflow entered #{state} while waiting to assign Elastic IP"
    else
      logger.info("Jobflow is in state #{state}, waiting....")
      sleep(30)
      self.jobflow_detail = client.describe_jobflow_with_id(jobflow_id)
    end
  end
end