#!/usr/bin/env ruby
# -------------------------------------------------------------------------- #
# Copyright 2002-2015, OpenNebula Project (OpenNebula.org), C12G Labs        #
#                                                                            #
# Licensed under the Apache License, Version 2.0 (the "License"); you may    #
# not use this file except in compliance with the License. You may obtain    #
# a copy of the License at                                                   #
#                                                                            #
# http://www.apache.org/licenses/LICENSE-2.0                                 #
#                                                                            #
# Unless required by applicable law or agreed to in writing, software        #
# distributed under the License is distributed on an "AS IS" BASIS,          #
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.   #
# See the License for the specific language governing permissions and        #
# limitations under the License.                                             #
#--------------------------------------------------------------------------- #

ONE_LOCATION=ENV["ONE_LOCATION"]

if !ONE_LOCATION
    RUBY_LIB_LOCATION="/usr/lib/one/ruby"
else
    RUBY_LIB_LOCATION=ONE_LOCATION+"/lib/ruby"
end

$: << RUBY_LIB_LOCATION
$: << RUBY_LIB_LOCATION+"/cloud"


require 'cli/command_parser'
require 'cli/cli_helper'
require 'econe/EC2QueryClient'

include CloudCLI

INSTANCE = {
    :name => "instance_id",
    :short => "-i instance_id",
    :large => "--instance instance_id",
    :description => "The ID of the instance to attach the volume to",
    :format => String
}

DEVICE = {
    :name => "device",
    :short => "-d device",
    :large => "--device device",
    :description => "Specifies the device name to expose to the instance." <<
        " Example: -d /dev/sdf",
    :format => String
}

CommandParser::CmdParser.new(ARGV) do
    usage "econe-attach-volume [OPTIONS] VOLUME-ID"
    version CloudCLI.version_text
    description <<-EOT
Attaches a DATABLOCK to a running instance and exposes it as the specified device.
VOLUME-ID: The ID of the DATABLOCK
EOT

    option [
        CommandParser::VERBOSE,
        CommandParser::HELP,
        CommandParser::VERSION,
        EC2QueryClient::ACCESS_KEY,
        EC2QueryClient::SECRET_KEY,
        EC2QueryClient::URL,
        INSTANCE,
        DEVICE
    ]

    main :volume_id do
        begin
            ec2_client = EC2QueryClient::Client.new(
                options[:access_key],
                options[:secret_key],
                options[:url])
        rescue Exception => e
            exit_with_code -1, "#{cmd_name}: #{e.message}"
        end

        rc = ec2_client.attach_volume(args[0], options[:instance_id], options[:device])

        if CloudClient::is_error?(rc)
            exit_with_code -1, "#{cmd_name}: #{rc.message}"
        else
            puts "volumeId: #{rc['volumeId']}"
            puts "instanceId: #{rc['instanceId']}"
            puts "status: #{rc['status']}"
            puts "device: #{rc['device']}"
            exit_with_code 0
        end
    end
end
