Class: Bosh::Cpi::Cli

Inherits:
Object
  • Object
show all
Defined in:
lib/bosh/cpi/cli.rb

Constant Summary collapse

KNOWN_RPC_METHODS = 
%w(
  current_vm_id
  create_stemcell
  delete_stemcell
  create_vm
  delete_vm
  has_vm
  reboot_vm
  set_vm_metadata
  configure_networks
  create_disk
  has_disk
  delete_disk
  attach_disk
  detach_disk
  snapshot_disk
  delete_snapshot
  get_disks
  ping
).freeze
RPC_METHOD_TO_RUBY_METHOD = 
{
  'has_vm' => 'has_vm?',
  'has_disk' => 'has_disk?',
}.freeze
INVALID_CALL_ERROR_TYPE = 
'InvalidCall'.freeze
UNKNOWN_ERROR_TYPE = 
'Unknown'.freeze

Instance Method Summary collapse

Constructor Details

#initialize(cpi, logs_string_io, result_io) ⇒ Cli

Returns a new instance of Cli.



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# File 'lib/bosh/cpi/cli.rb', line 33

def initialize(cpi, logs_string_io, result_io)
  @cpi = cpi
  @logs_string_io = logs_string_io
  @result_io = result_io
end

Instance Method Details

#run(json) ⇒ Object 



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# File 'lib/bosh/cpi/cli.rb', line 39

def run(json)
  begin
    request = JSON.load(json)
  rescue JSON::ParserError
    return error_response(INVALID_CALL_ERROR_TYPE, 'Request cannot be deserialized', false)
  end

  method = request['method']
  unless method.is_a?(String)
    return error_response(INVALID_CALL_ERROR_TYPE, 'Method must be a String', false)
  end

  unless KNOWN_RPC_METHODS.include?(method)
    return error_response(INVALID_CALL_ERROR_TYPE, 'Method is not known', false)
  end

  arguments = request['arguments']
  unless arguments.is_a?(Array)
    return error_response(INVALID_CALL_ERROR_TYPE, 'Arguments must be an Array', false)
  end

  context = request['context']
  unless context.is_a?(Hash) && context['director_uuid'].is_a?(String)
    return error_response(INVALID_CALL_ERROR_TYPE, 'Request should include context with director uuid', false)
  end

  configure_director(context['director_uuid'])

  ruby_method = RPC_METHOD_TO_RUBY_METHOD[method] || method

  begin
    result = @cpi.public_send(ruby_method, *arguments)
  rescue Bosh::Clouds::RetriableCloudError => e
    return error_response(error_name(e), e.message, e.ok_to_retry)
  rescue Bosh::Clouds::CloudError, Bosh::Clouds::CpiError => e
    return error_response(error_name(e), e.message, false)
  rescue ArgumentError
    return error_response(INVALID_CALL_ERROR_TYPE, 'Arguments are not correct', false)
  rescue Exception => e
    return error_response(UNKNOWN_ERROR_TYPE, e.message, false)
  end

  result_response(result)
end