#!/usr/bin/env ruby

# ---------------------------------------------------------------------------- #
# Copyright 2002-2018, OpenNebula Project, OpenNebula Systems                  #
#                                                                              #
# 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 !defined?(ONE_LOCATION)

if !ONE_LOCATION
    RUBY_LIB_LOCATION="/usr/lib/one/ruby" if !defined?(RUBY_LIB_LOCATION)
else
    RUBY_LIB_LOCATION=ONE_LOCATION+"/lib/ruby" if !defined?(RUBY_LIB_LOCATION)
end

$: << RUBY_LIB_LOCATION
$: << File.dirname(__FILE__)

require 'vcenter_driver'

def is_deploy_id_valid?(deploy_id)
    return deploy_id && !deploy_id.empty?
end

dfile        = ARGV[0]
cluster_name = ARGV[1]
vm_id        = ARGV[2]

drv_action = OpenNebula::XMLElement.new
drv_action.initialize_xml(Base64.decode64(STDIN.read), 'VM')

deploy_id    = drv_action["DEPLOY_ID"]
host_id      = drv_action["HISTORY_RECORDS/HISTORY/HID"]

begin

    vi_client = VCenterDriver::VIClient.new_from_host(host_id)
    one_vm = VCenterDriver::VIHelper.one_item(OpenNebula::VirtualMachine, vm_id)

    if is_deploy_id_valid?(deploy_id)
        # VM is not new, we just need to reconfigure it and to power it on
        vm = VCenterDriver::VirtualMachine.new_one(vi_client, deploy_id, one_vm)
    else
        vc_template_ref = drv_action['USER_TEMPLATE/VCENTER_TEMPLATE_REF']
        # VM is new
        # Clone the VM from template and provide XML info
        vm = VCenterDriver::VirtualMachine.new_from_clone(vi_client, drv_action, vm_id)
        # Set reference to template disks and nics in VM template for detach ops
        vm.reference_unmanaged_devices(vc_template_ref)
    end

    # Resize unmanaged disks
    vm.resize_unmanaged_disks

    vm.reconfigure
    vm.poweron
    vm.set_running(true)

    vm.one_item.update("VCENTER_ESX_HOST = #{vm["runtime.host.name"]}", true)

    puts vm['_ref']

rescue Exception => e
    message   =  "Deploy of VM #{vm_id} on vCenter cluster #{cluster_name} " +
                 "with #{dfile} failed due to \"#{e.message}\"\n#{e.backtrace}"
    OpenNebula.log_error(message)
    exit -1
ensure
    vi_client.close_connection if vi_client
end
